Mobile hard disk

Abstract

The utility model provides a mobile hard disk which comprises a communication protocol management unit, a first connector, a second connector and a storage unit. The communication protocol management unit comprises a communication protocol control unit and a switching circuit, the switching circuit is electrically connected with the communication protocol control unit, the storage unit, the first connector and the second connector, and the communication protocol control unit is further electrically connected with the first connector and the second connector. The first connector is further electrically connected with the storage unit and external host equipment, and the second connector is further electrically connected with external charging equipment. According to the utility model, the second connector charges the mobile hard disk and the host equipment, and the communication protocol management unit manages and controls the first connector and the second connector, so that the problem of limited charging of the host equipment can be effectively solved, and the actual demand of a user for photographing by using the host equipment is greatly met.

Description

Technical Field

[0001] The utility model relates to the technical field of storage, in particular to a mobile hard disk. Background Art

[0002] With the advancement of technology, the pixels and shooting clarity of some host devices such as mobile phones are gradually improving, making mobile phone photography more and more widely used. The higher the definition of the recorded video, the more memory space is required. In order to save memory, host devices such as mobile phones often restrict users from using certain extremely high-definition photography formats. If the mobile phone is connected to an external USB mobile hard drive, the mobile phone allows and opens all high-definition photography formats and writes the video content directly to the mobile hard drive. Therefore, the photography method of connecting the mobile phone to an external mobile hard drive can effectively solve the problem of limited storage space and high-definition photography formats, but this photography method also brings new problems, such as increased power consumption of the mobile phone and the inability to charge the mobile phone at the same time. Utility Model Content

[0003] The utility model provides a mobile hard disk, which can at least solve the problem that the mobile hard disk in the related art occupies the charging interface of the host device when in use, so that the host device cannot be charged.

[0004] In order to solve the above technical problems, the utility model provides a mobile hard disk, including: a communication protocol management unit, a first connector, a second connector and a storage unit; the communication protocol management unit includes a communication protocol control unit and a switch circuit, the switch circuit is electrically connected to the communication protocol control unit, the storage unit, the first connector and the first end of the second connector respectively, the second end, the third end and the fourth end of the communication protocol control unit are electrically connected to the second end of the first connector, the second end and the third end of the second connector respectively, the third end of the first connector is electrically connected to the second end of the storage unit, the fourth end of the first connector is used to be electrically connected to an external host device, and the fourth end of the second connector is used to be electrically connected to an external charging device.

[0005] Furthermore, the switching circuit includes a first switching device and a second switching device; the first end of the first switching device is electrically connected to the first connector, the first end of the second switching device is electrically connected to the second connector, the second end of the first switching device is electrically connected to the second end of the second switching device, the communication protocol control unit and the storage unit respectively, and the third ends of the first switching device and the second switching device are both used to be electrically connected to the storage unit.

[0006] Furthermore, it also includes a first capacitor and a first diode; one end of the first capacitor and the first diode are both electrically connected to the common connection end of the first connector and the first switching device, and the other end of the first capacitor and the first diode are both grounded.

[0007] Furthermore, it also includes a second capacitor and a second diode; one end of the second capacitor and the second diode are both electrically connected to the common connection end of the second connector and the second switch device, and the other end of the second capacitor and the second diode are both grounded.

[0008] Furthermore, a third capacitor is included, one end of the third capacitor is electrically connected to the common connection end of the storage unit and the switch circuit, and the other end of the third capacitor is grounded.

[0009] Furthermore, it also includes a first resistor and a fourth capacitor, the first resistor is electrically connected between the second end of the second connector and the communication protocol control unit, one end of the fourth capacitor is electrically connected to the second end of the second connector and the common connection end of the communication protocol control unit, and the other end of the fourth capacitor is grounded.

[0010] Furthermore, it also includes a first resistance unit and a second resistance unit, the third end of the communication protocol control unit includes a first sub-terminal, a second sub-terminal, a third sub-terminal and a fourth sub-terminal, the third end of the second connector includes a fifth sub-terminal and a sixth sub-terminal, the first sub-terminal and the second sub-terminal are both electrically connected to the fifth sub-terminal, the third sub-terminal and the fourth sub-terminal are both electrically connected to the sixth sub-terminal, the first resistance unit is respectively electrically connected to the first sub-terminal, the second sub-terminal and the fifth sub-terminal, and the second resistance unit is respectively electrically connected to the third sub-terminal, the fourth sub-terminal and the sixth sub-terminal.

[0011] Further, the first resistance unit includes a second resistor, a third resistor and a fourth resistor, one end of the second resistor is electrically connected to the first sub-end, the other end of the second resistor is electrically connected to the fifth sub-end, one end of the third resistor is electrically connected to the second sub-end, the other end of the third resistor is electrically connected to the other end of the second resistor, one end of the fourth resistor is electrically connected to the other end of the second resistor, and the other end of the fourth resistor is grounded.

[0012] Furthermore, the storage unit includes a memory controller, a memory array and a power conversion circuit; the memory controller is electrically connected to the first connector and the memory array respectively, and the power conversion circuit is electrically connected to the switch circuit respectively.

[0013] Furthermore, the mobile hard disk also includes a permanent magnet, which is used to magnetically connect with an external magnetic attraction sheet; or, the mobile hard disk also includes a clamping portion and a groove, the clamping portion is movably connected to the groove, and two clamping arms are relatively arranged on the side of the clamping portion away from the mobile hard disk, and the two clamping arms are used to clamp external devices.

[0014] From the above description, it can be seen that the mobile hard disk of the utility model is provided with a first connector and a second connector. The first connector is used to perform data transmission and storage functions like a traditional hard disk, and the second connector is used to charge the mobile hard disk and the host device. The communication protocol management unit manages and controls the first and second connectors, which can effectively solve the problem of limited charging of the host device and greatly meet the actual needs of users using the host device for photography. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a mobile hard disk in an embodiment of the utility model;

[0016] Figure 2 It is a circuit schematic diagram of a communication protocol management unit of an embodiment of the utility model;

[0017] Figure 3 It is a circuit schematic diagram of a first connector of an embodiment of the utility model;

[0018] Figure 4 This is a circuit schematic diagram of a second connector according to an embodiment of the utility model;

[0019] Figure 5 It is a structural schematic diagram of a storage unit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in the various embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] In the related art, there is a problem that when the mobile hard disk is in use, the charging interface of the host device is occupied, so that the host device cannot be charged. Therefore, an embodiment of the utility model provides a mobile hard disk.

[0022] like Figure 1The figure shows a schematic diagram of the structure of a mobile hard disk provided by an embodiment of the utility model, the mobile hard disk comprises: a communication protocol management unit 100, a first connector 200, a second connector 300 and a storage unit 400; the communication protocol management unit 100 comprises a communication protocol control unit 110 and a switch circuit 120, the switch circuit 120 is electrically connected to the first ends of the communication protocol control unit 110, the storage unit 400, the first connector 200 and the second connector 300 respectively, the second end, the third end and the fourth end of the communication protocol control unit 110 are electrically connected to the second end of the first connector 200, the second end and the third end of the second connector 300 respectively, the third end of the first connector 200 is electrically connected to the second end of the storage unit 400, the fourth end of the first connector 200 is used to be electrically connected to an external host device 500, and the fourth end of the second connector 300 is used to be electrically connected to an external charging device 600.

[0023] In addition, the mobile hard disk also includes a permanent magnet, which is used to magnetically connect with an external magnetic attraction sheet; or, the mobile hard disk also includes a clamping portion and a groove, the clamping portion is movably connected to the groove, and two clamping arms are relatively arranged on the side of the clamping portion away from the mobile hard disk, and the two clamping arms are used to clamp the external device.

[0024] Specifically, the mobile hard disk in this embodiment adds a second connector 300 and a communication protocol management unit 100 on the basis of the traditional first connector 200; wherein, the first connector 200 and the second connector 30 can be USB TYPE_C, and the communication protocol management unit 100 can be a communication protocol management unit of the fast charging protocol (USB-Power Delivery, USB PD). The first connector 200 is used to connect to an external host device 500, and the host device 500 has a USB interface, such as a mobile phone, a computer, etc., which can realize high-number data reading and writing communication and charging and discharging. The second connector 300 is used to connect to an external charging device 600, such as a power bank, a wall charger, etc. The USB PD communication protocol management unit 100 automatically detects and manages the status of the devices connected to the first connector 200 and the second connector 300, and realizes power role switching and charging and discharging protocol matching. The communication protocol control unit 110 in the USB PD communication protocol management unit 100 may also be a USB PD protocol control unit, and the switch circuit 120 may be a MOS switch circuit; the communication protocol control unit 110 has at least two groups of CC channels, namely CC1 and CC2, which can be used to configure power supply and role switching for two connected devices. The two groups of CC channels are respectively connected to the first connector 200 and the second connector 300, and the switch circuit 120 is respectively connected to the VBUS power supply terminals of the two connectors and provides power output for the internal circuit.

[0025] When the USB PD communication protocol management unit 100 in this embodiment is connected to a host device 500 such as a mobile phone at the first connector 200, the communication protocol control unit 110 determines the roles of the mobile phone and the mobile hard disk by means of a pull-down resistor on the CC pin. For example, when the mobile phone is a power supply master device and the mobile hard disk is a power absorption slave device, the mobile phone can discharge through the VBUS1 end of the first connector 200. For example, when the second connector 300 is not connected to an external charging device 600, the communication protocol control unit 110 connects the VBUS1 end and the VBUS_SYS end by controlling the switch circuit 120, so that the mobile phone supplies power to the internal circuits such as the storage unit 400 through the VBUS1 end of the first connector 200 and the VBUS_SYS end of the switch circuit; when the second connector 300 is connected to an external charging device 600, the communication protocol control unit 110 immediately connects the VBUS1 end and the VBUS_SYS end of the first connector 200 through the CC pin of the first connector 200 and presses the PD The SWAP protocol changes the role of the mobile phone's power supply master device into a power-absorbing slave device, and obtains the charging protocol supported by the mobile phone, so that the mobile phone stops supplying power through the VBUS1 end and switches to charging from the VBUS1 end; then the communication protocol control unit 110 controls the switch circuit 120, connects the VBUS1 end, the VBUS2 end and the VBUS_SYS end, so that the external charging device 600 is powered through the VBUS2 end of the second connector 300, powers the internal mobile hard disk through the VBUS_SYS end, and charges the mobile phone through the VBUS1 end. In addition, it should be noted that the communication protocol control unit 110 has two independent CC channels, which can communicate and match the charging and discharging protocols with the host device 500 and the charging device 600 respectively. If the fast charging protocols of the host device 500 and the charging device 600 are inconsistent and incompatible, the communication protocol control unit 110 can coordinate and match according to the charging and discharging capabilities actually supported by both parties, so that high-voltage and high-current fast charging of the host device can still be achieved. Therefore, the mobile hard disk in this embodiment adds a separate second connector (only for power supply) on the basis of the traditional first connector (which can be used for data transmission and power supply); at the same time, a USB PD communication protocol management unit is added internally, so that when the user connects to an external charging device through the second connector, the host device can be turned into a power-absorbing slave device, thereby realizing the operation of charging the host device while absorbing power from the hard disk; and by building a permanent magnet into the mobile hard disk and combining it with an external magnetic sheet to adsorb it on the host device (for example, on the back shell of a mobile phone) or clip it on the back shell of a mobile phone through a clamping part, the problems of charging the host device and the inconvenience of carrying the mobile hard disk can be effectively solved, which greatly meets the actual needs of users using the host device for photography.

[0026] like Figure 2 FIG. 1 is a circuit diagram of a communication protocol management unit provided in this embodiment. Figure 3 FIG. 1 is a circuit diagram of a first connector provided in this embodiment. Figure 4The circuit diagram of a second connector provided in this embodiment is shown in FIG. Figures 1 to 4 The switch circuit 120 includes a first switch device Q1 and a second switch device Q2; a first end of the first switch device Q1 is electrically connected to the first connector J1, a first end of the second switch device Q2 is electrically connected to the second connector J2, a second end of the first switch device Q1 is electrically connected to the second end of the second switch device Q2, the communication protocol control unit 110 and the storage unit 400, and third ends of the first switch device Q1 and the second switch device Q2 are both used to be electrically connected to the storage unit 400.

[0027] Furthermore, the mobile hard disk also includes a first capacitor C2 and a first diode D1; one end of the first capacitor C2 and the first diode D1 are electrically connected to the common connection end of the first connector J1 and the first switch device Q1, and the other end of the first capacitor C2 and the first diode S1 are grounded.

[0028] Furthermore, the mobile hard disk also includes a second capacitor C3 and a second diode D2; one end of the second capacitor C3 and the second diode D2 are electrically connected to the common connection end of the second connector J2 and the second switch device Q2, and the other end of the second capacitor C3 and the second diode D2 are grounded.

[0029] Furthermore, the mobile hard disk further includes a third capacitor C1 , one end of the third capacitor C1 is electrically connected to a common connection end of the storage unit 400 and the switch circuit 120 , and the other end of the third capacitor C1 is grounded.

[0030] Furthermore, the mobile hard disk also includes a first resistor R7 / R10 and a fourth capacitor C12 / C13, the first resistor R7 / R10 is electrically connected between the second end of the second connector J2 and the communication protocol control unit 110, one end of the fourth capacitor C12 / C13 is electrically connected to the second end of the second connector J2 and the common connection end of the communication protocol control unit 110, and the other end of the fourth capacitor C12 / C13 is grounded. It should be noted that the second end of the second connector J2 includes two sub-ends, which are correspondingly connected to the CC pins (PT5.7 / CC_E, PT5.6 / CC_F) of the communication protocol control unit 110, and each sub-end is connected to a resistor R7 / R10 and a capacitor C13 / C12.

[0031] Further, the mobile hard disk also includes a first resistor unit and a second resistor unit. The third end of the communication protocol control unit includes a first sub-terminal PT3.4 / D-_VDD, a second sub-terminal PT2.1 / ADC_D-, a third sub-terminal PT2.0 / D+_VDD1 and a fourth sub-terminal PT2.0 / D+_VDD2. The third end of the second connector J2 includes a fifth sub-terminal CONN-A D0 N and a sixth sub-terminal CONN-AD0 P. The first sub-terminal PT3.4 / D-_VDD and the second sub-terminal PT2.1 / ADC_D- are both electrically connected to the fifth sub-terminal CONN-A D0 N, the third sub-terminal PT2.0 / D+_VDD1 and the fourth sub-terminal PT2.0 / D+_VDD2 are both electrically connected to the sixth sub-terminal CONN-A D0 P. The first resistor unit is respectively connected to the first sub-terminal PT3.4 / D-_VDD, the second sub-terminal PT2.1 / ADC_D- and the fifth sub-terminal CONN-A D0 N is electrically connected, and the second resistance unit is electrically connected to the third sub-terminal PT2.0 / D+_VDD1, the fourth sub-terminal PT2.0 / D+_VDD2 and the sixth sub-terminal CONN-A D0 P respectively.

[0032] Further, the first resistor unit includes a second resistor R11, a third resistor R12 and a fourth resistor R14, one end of the second resistor R11 is electrically connected to the first sub-terminal PT3.4 / D-_VDD, the other end of the second resistor R11 is electrically connected to the fifth sub-terminal CONN-A D0 N, one end of the third resistor R12 is electrically connected to the second sub-terminal PT2.1 / ADC_D-, the other end of the third resistor R12 is electrically connected to the other end of the second resistor R11, one end of the fourth resistor R14 is electrically connected to the other end of the second resistor R11, and the other end of the fourth resistor R14 is grounded.

[0033] In this embodiment, the capacitor connected to the first connector 200, the second connector 300 and the communication protocol management unit 100 can stabilize the current and voltage, filter noise and electromagnetic interference, so as to ensure the normal operation and data transmission of the mobile hard disk; the diode can play the role of electrostatic protection, and each resistor can play the role of current limiting. In addition, it should be noted that the structure of the second resistor unit is similar to that of the first resistor unit, which will not be repeated here.

[0034] like Figure 5 FIG. 1 is a schematic diagram of a storage unit provided in this embodiment. Figure 5 The storage unit 400 includes a memory controller 410, a memory array 420 and a power conversion circuit 430; the memory controller 410 is electrically connected to the first connector 400 and the memory array 420 respectively, and the power conversion circuit 430 is electrically connected to the switch circuit 120 respectively.

[0035] Specifically, in this embodiment, the memory controller in the storage unit 400 may be a USB flash memory controller, and the memory array may be a flash memory array (NAND FLASH). The USB flash memory controller is connected to the first connector 200 via the data transmission terminals DP / DM and SSTx / Rx, and can read, write and manage the flash memory array at the same time; the power conversion circuit 430 is powered by the VBUS_SYS terminal of the switch circuit 120 and converted into internal power supply voltages of each group.

[0036] The mobile hard disk provided by the embodiment of the utility model adds a separate second connector on the basis of the traditional first connector, and at the same time adds a USB PD communication protocol management unit inside, so that when the user connects to an external charging device through the second connector, the host device can be turned into a power-absorbing slave device, thereby realizing the operation of charging the host device while absorbing power from the hard disk; and by building a permanent magnet into the mobile hard disk and combining it with an external magnetic attraction sheet to adsorb it on the host device, the problems of charging the host device and the inconvenience of carrying the mobile hard disk can be effectively solved, which greatly meets the actual needs of users using the host device for photography.

[0037] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0038] It should also be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined in the present invention may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in the present invention, but will conform to the widest range consistent with the principles and novel features disclosed in the present invention.

Claims

1. A mobile hard disk, characterized in that: include: A communication protocol management unit, a first connector, a second connector and a storage unit; The communication protocol management unit includes a communication protocol control unit and a switching circuit, wherein the switching circuit is electrically connected to the communication protocol control unit, the storage unit, the first connector and the first end of the second connector respectively, the second end, the third end and the fourth end of the communication protocol control unit are electrically connected to the second end of the first connector, the second end and the third end of the second connector respectively, the third end of the first connector is electrically connected to the second end of the storage unit, the fourth end of the first connector is used to be electrically connected to an external host device, and the fourth end of the second connector is used to be electrically connected to an external charging device.

2. The mobile hard disk according to claim 1, characterized in that: The switching circuit includes a first switching device and a second switching device; the first end of the first switching device is electrically connected to the first connector, the first end of the second switching device is electrically connected to the second connector, the second end of the first switching device is electrically connected to the second end of the second switching device, the communication protocol control unit and the storage unit respectively, and the third ends of the first switching device and the second switching device are both used to be electrically connected to the storage unit.

3. The mobile hard disk according to claim 2, characterized in that: It also includes a first capacitor and a first diode; one end of the first capacitor and the first diode are both electrically connected to the common connection end of the first connector and the first switch device, and the other ends of the first capacitor and the first diode are both grounded.

4. The mobile hard disk according to claim 2, characterized in that: It also includes a second capacitor and a second diode; one end of the second capacitor and the second diode are both electrically connected to the common connection end of the second connector and the second switch device, and the other ends of the second capacitor and the second diode are both grounded.

5. The mobile hard disk according to claim 1, characterized in that: It also includes a third capacitor, one end of which is electrically connected to a common connection end of the storage unit and the switch circuit, and the other end of the third capacitor is grounded.

6. The mobile hard disk according to claim 1, characterized in that: It also includes a first resistor and a fourth capacitor, wherein the first resistor is electrically connected between the second end of the second connector and the communication protocol control unit, one end of the fourth capacitor is electrically connected to the second end of the second connector and the common connection end of the communication protocol control unit, and the other end of the fourth capacitor is grounded.

7. The mobile hard disk according to claim 1, characterized in that: It also includes a first resistance unit and a second resistance unit. The third end of the communication protocol control unit includes a first sub-end, a second sub-end, a third sub-end and a fourth sub-end. The third end of the second connector includes a fifth sub-end and a sixth sub-end. The first sub-end and the second sub-end are both electrically connected to the fifth sub-end, and the third sub-end and the fourth sub-end are both electrically connected to the sixth sub-end. The first resistance unit is respectively electrically connected to the first sub-end, the second sub-end and the fifth sub-end, and the second resistance unit is respectively electrically connected to the third sub-end, the fourth sub-end and the sixth sub-end.

8. The mobile hard disk according to claim 7, characterized in that: The first resistor unit includes a second resistor, a third resistor and a fourth resistor, one end of the second resistor is electrically connected to the first sub-end, the other end of the second resistor is electrically connected to the fifth sub-end, one end of the third resistor is electrically connected to the second sub-end, the other end of the third resistor is electrically connected to the other end of the second resistor, one end of the fourth resistor is electrically connected to the other end of the second resistor, and the other end of the fourth resistor is grounded.

9. The mobile hard disk according to claim 1, characterized in that: The storage unit includes a memory controller, a memory array and a power conversion circuit; the memory controller is electrically connected to the first connector and the memory array respectively, and the power conversion circuit is electrically connected to the switch circuit respectively.

10. The mobile hard disk according to claim 1, characterized in that: The mobile hard disk also includes a permanent magnet, which is used to magnetically connect with an external magnetic attraction sheet; Alternatively, the mobile hard disk further includes a clamping portion and a groove, the clamping portion is movably connected to the groove, and two clamping arms are relatively arranged on a side of the clamping portion away from the mobile hard disk, and the two clamping arms are used to clamp an external device.

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