Portable hard disk cartridge

Abstract

The utility model relates to a portable hard disk box which comprises a first TYPE C interface, a second TYPE C interface, a battery interface, a PD chip, a microprocessor, a battery management chip, a power tube switching circuit, a voltage reduction chip and a battery connected to the battery interface. The power switch circuit comprises a first power switch tube, a second power switch tube, a third power switch tube, a fourth power switch tube and a fifth power switch tube, the first TYPE C interface is connected with the PD chip and the first power switch tube, the second TYPE C interface is connected with the PD chip and the second power switch tube, the microprocessor is connected with the PD chip and the battery management chip, and the battery management chip is connected with the battery management chip. The voltage reduction chip is connected with a third power switch tube and a fifth power switch tube, the battery management chip is further connected with a battery interface, a fourth power switch tube and the fifth power switch tube, the PD chip is further connected with a first power switch tube and a second power switch tube, and the microprocessor is further connected with the third power switch tube, the fourth power switch tube and the fifth power switch tube.

Description

Technical Field

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

[0002] With the rapid development of the Internet and multimedia, people are increasingly encountering scenarios where large-capacity data exchange is required, so portable hard disks have emerged. A portable hard disk is a storage product that uses a hard disk as a storage medium, is used to exchange large-capacity data, and emphasizes portability. At present, the function of an ordinary portable hard disk box is to physically protect a hard disk, and it also has a data and power conversion interface to facilitate the connection of the hard disk with mobile devices such as mobile phones and tablets for data exchange. However, this type of common portable hard disk box has limitations in use. An external power supply is required to use a large-capacity hard disk. After unplugging the charger, the built-in hard disk of the portable hard disk box will be illegally powered off, and there is a risk of data loss. In addition, when the mobile phone enters standby mode, the hard disk box will continue to send data to the mobile phone, causing the mobile phone CPU to be unable to enter low power consumption, resulting in problems such as excessive power consumption of the mobile phone. Utility Model Content

[0003] In view of this, it is necessary to provide a portable hard disk box that is suitable for large-capacity hard disks, has low power consumption, long battery life, and is safe and reliable.

[0004] A portable hard disk box comprises a box body and a circuit module arranged in the box body, wherein the circuit module comprises a first TYPE C interface, a second TYPE C interface, a battery interface, a PD chip, a microprocessor, a battery management chip, a power tube switch circuit, a buck chip and a battery connected to the battery interface, the power switch circuit comprises a first power switch tube, a second power switch tube, a third power switch tube, a fourth power switch tube and a fifth power switch tube, the first TYPE C interface connects the PD chip and the first power switch tube, the second TYPE C interface connects the PD chip and the second power switch tube, the microprocessor connects the PD chip and the battery management chip, the buck chip connects the third power switch tube and the fifth power switch tube, the battery management chip is also connected to the battery interface, the fourth power switch tube and the fifth power switch tube, the PD chip is also connected to the first power switch tube and the second power switch tube, and the microprocessor is also connected to the third power switch tube, the fourth power switch tube and the fifth power switch tube.

[0005] Furthermore, the source of the first power switch tube is connected to the source of the second power switch tube, the drain of the first power switch tube is connected to the first TYPE C interface, and the gate of the first power switch tube is connected to the PD chip.

[0006] Furthermore, the drain of the second power switch tube is connected to the second TYPE C interface, and the gate of the second power switch tube is connected to the PD chip.

[0007] Further, the source of the third power switch tube is connected to the source of the fourth power switch tube, the drain of the third power switch tube is connected to the source of the fifth power switch tube, and the gate of the third power tube is connected to the microprocessor.

[0008] Furthermore, the drain of the fourth power switch tube is connected to the battery management chip, and the gate of the fourth power switch tube is connected to the microprocessor.

[0009] Furthermore, the drain of the fifth power switch tube is connected to the battery management chip, and the gate of the fifth power switch tube is connected to the microprocessor.

[0010] Furthermore, the source of the first power switch tube, the source of the second power switch tube and the buck chip are powered by the bus voltage.

[0011] Furthermore, the source of the third power switch tube and the source of the fourth switch tube are powered by a system voltage.

[0012] Furthermore, the circuit module also includes a USB hub for connecting the hard disk, a hard disk bridge chip and a detachable hard disk, and the microprocessor is connected to the USB hub and the hard disk bridge chip.

[0013] Furthermore, the circuit module further includes a USB2.0 switch and a USB3.0 switch, the USB hub is connected to the USB2.0 switch and the USB3.0 switch respectively, the microprocessor is connected to the USB2.0 switch and the USB3.0 switch respectively, and the USB2.0 switch and the USB3.0 switch are connected to the first TYPE C interface respectively.

[0014] The built-in battery of the portable hard disk case of the utility model can be operated with the built-in battery of mobile devices such as mobile phones under the configuration of the circuit module, especially under the control of the power switch circuit, without carrying an external charger or other adapters, effectively ensuring the battery life requirements of the mobile phone when operating for a long time such as shooting videos, and providing storage capabilities for large-capacity video data. Moreover, in scenarios such as when the mobile phone screen is turned off, the portable hard disk case will not always send data to mobile devices such as mobile phones, saving power of the built-in battery of mobile devices such as mobile phones. In addition, when plugging and unplugging the external charger connected to the portable hard disk case, the circuit module can also realize seamless switching of power supply, and the hard disk built in the portable hard disk case will not be illegally powered off, thereby ensuring the safety of the hard disk and data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a circuit module structure of a portable hard disk box according to an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 A schematic diagram of a power tube switch circuit of a portable hard disk box.

[0017] Figure 3 yes Figure 1 A schematic diagram of a first TYPEC interface circuit of a portable hard disk box.

[0018] Figure 4 yes Figure 1 A schematic diagram of a second TYPEC interface circuit of a portable hard disk box.

[0019] Figure 5 yes Figure 1 A schematic diagram of the PD chip circuit of a portable hard disk box.

[0020] Figure 6 yes Figure 1 A schematic diagram of a microprocessor circuit of a portable hard disk box.

[0021] Figure 7 yes Figure 1 A schematic diagram of a battery management chip circuit for a portable hard disk box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , which is a portable hard disk box 10 of an embodiment of the utility model, includes a box body (not shown) and a circuit module 20 disposed in the box body. The circuit module 20 includes a first TYPE C interface 21, a second TYPE C interface 22, a battery interface 23, a PD (Power Delivery) chip 24, a microprocessor 25, a battery management chip 26, a power tube switch circuit 27, a buck chip 28 and a battery connected to the battery interface 23 (not shown).

[0024] In this embodiment, the circuit module 20 in the portable hard disk box 10 also includes a USB hub 29, a hard disk box bridge chip 30, a USB2.0 switch 31, a USB3.0 switch 32 and a removable hard disk (not shown). The microprocessor 25 is connected to the USB hub 29, the USB2.0 switch 31 and the USB3.0 switch 32 one by one, the USB hub 29 is also connected to the hard disk box bridge chip 30, the USB2.0 switch 31 and the USB3.0 switch 32 respectively, the USB2.0 switch 31 and the USB3.0 switch 32 are also connected to the TYPE C interface 21 respectively, and the hard disk is connected to the USB hub 29.

[0025] Please also read Figure 2 The power switch circuit 27 includes a first power switch tube 271 , a second power switch tube 272 , a third power switch tube 273 , a fourth power switch tube 274 and a fifth power switch tube 275 .

[0026] The first TYPE C interface 21 connects the PD chip 24 and the first power switch tube 271, and the second TYPE C interface 22 connects the PD chip 24 and the second power switch tube 272. The microprocessor 25 connects the PD chip 24 and the battery management chip 26, and the battery management chip 26 is also connected to the battery interface 23, the fourth power switch tube 274 and the fifth power switch tube 275. The buck chip 28 connects the third power switch tube 273 and the fifth power switch tube 275. The PD chip 24 is also connected to the first power switch tube 271 and the second power switch tube 272, the microprocessor 25 is also connected to the third power switch tube 273, the fourth power switch tube 274 and the fifth power switch tube 275, and the battery interface 23 is also connected to the battery management chip 26.

[0027] See also Figures 3 to 7Specifically, the CC1 pin of the first TYPE C interface 21 is connected to the CC1 pin of the PD chip 24, and the CC1 / CC2 pins of the second TYPE C interface 22 are connected to the CC1 / CC2 pins of the PD chip 24. The PD chip 24 and the microprocessor 25, and the battery management chip 26 and the microprocessor 25 communicate via the I2C bus. The source S of the first power switch tube 271 is connected to the source S of the second power switch tube 272, the drain D of the first power switch tube 271 is connected to the VCC pin of the first TYPE C interface 22, and the gate G of the first power switch tube 271 is connected to the VBEN pin of the PD chip 24, for receiving the voltage SW1 output by the VBEN pin of the PD chip 24. The drain D of the second power switch tube 272 is connected to the VBUS pin of the second TYPE C interface 22, and the gate G of the second power switch tube 272 is connected to the VadpEN pin of the PD chip 24, for receiving the voltage SW2 output by the VadpEN pin of the PD chip 24. The source S of the third power switch tube 273 is connected to the source S of the fourth power switch tube 274, the drain D of the third power switch tube 273 is connected to the source S of the fifth power switch tube 275 and the LX pin of the buck chip 28, and receives the voltage P5V1 output by the buck chip 28, and the gate G of the third power switch tube 273 is connected to the GPIO7 pin of the microprocessor 25, and is used to receive the voltage SW3 output by the microprocessor 25. The drain D of the fourth power switch tube 274 is connected to the VOUT pin of the battery management chip 26, and is used to receive the voltage P5V2 output by the VOUT pin of the battery management chip 26, and the gate G of the fourth power switch tube 274 is connected to the GPIO9 pin of the microprocessor 25, and is used to receive the voltage SW4 output by the microprocessor 25. The drain D of the fifth power switch tube 275 is connected to the VIN pin of the battery management chip 26, and the gate G of the fifth power switch tube 275 is connected to the GPIO10 pin of the microprocessor for receiving the voltage SW5 output by the microprocessor 25. The source S of the fifth power switch tube 275 is loaded with the voltage P5V1 output by the buck chip 28.

[0028] When the first TYPEC interface 21 is connected to the TYPEC interface on the mobile phone (not shown) via a TYPE C data cable and the second TYPEC interface 22 is not connected to the charger, the PD chip 24 outputs a voltage SW1 to the first power switch tube 271 to turn it on, and at the same time communicates with the microprocessor 25 via the I2C protocol. The microprocessor 25 outputs a voltage SW4 to the fourth power switch tube 274 to turn it on. The second power switch tube 272, the third power switch tube 273, and the fifth power switch tube 275 are all in the off state. At this time, the built-in battery of the portable hard disk box 10 supplies power to the hard disk box and the hard disk, so that the battery power of the mobile phone will not be consumed by the portable hard disk box 10, so that the mobile phone can operate with low power consumption.

[0029] When the battery power built into the portable hard disk box 10 is low, the battery management chip 26 sends a low-battery signal to the microprocessor 25, and the microprocessor 25 outputs voltage SW3 to the third power switch tube 273 to turn it on. At this time, the mobile phone battery and the battery built into the portable hard disk box 10 simultaneously power the hard disk. In this case, the power consumption of the mobile phone and the battery each accounts for half, which can still ensure that the portable hard disk box 10 meets the operational requirements of long-term video shooting, etc. At the same time, since the battery of the portable hard disk box 10 shares the power supply, the built-in battery of the mobile phone consumes less power.

[0030] After the second TYPE C interface 22 is connected to the charger, the PD chip 24 outputs voltages SW1 and SW2, causing the first power switch tube 271 and the second power switch tube 272 to be turned on at the same time, and notifies the microprocessor 25. The microprocessor 25 then notifies the battery management chip 26 to turn off the battery discharge of the portable hard disk box 10. The battery management chip 26 outputs voltage SW5 to turn on the fifth power switch tube 275. In this way, the battery of the portable hard disk box 10 and the mobile phone battery are charged at the same time.

[0031] When the PD chip 24 recognizes that the charger on the second TYPE C interface 22 is unplugged, it sends a signal to the mobile phone within 150us (PR SWAP power exchange). The mobile phone does not turn off the data function and turns on VBUS within 100ms. The entire system of the portable hard disk box 10 is powered by the battery of the portable hard disk box 10, ensuring the stable power supply of the portable hard disk box 10. In this way, after the charger is unplugged, the hard disk will not be illegally powered off.

[0032] In order to avoid the situation that the portable hard disk box 10 continues to send data to the mobile phone when the mobile phone enters the standby state, causing the mobile phone CPU to be unable to enter the low power consumption mode, when the portable hard disk box 10 is not used for a long time (not transmitting data with the mobile phone), the mobile phone enters the lock screen interface, and the hub 29 sends a USB suspend signal to the microprocessor 25. The microprocessor 25 turns off the USB3.0 switch 32 and switches the USB2.0 switch 31 to the USB channel of the microprocessor 25. The USB2.0 channel of the microprocessor 25 is in the suspended state, and the mobile phone CPU enters the low power consumption mode, thereby extending the battery life of the mobile phone, and the user does not have to worry about excessive power consumption. After the mobile phone wakes up, it wakes up through the USB suspend mechanism of the USB2.0 channel. After the microprocessor 25 determines it, it turns on the USB3.0 switch through the SEL (select) pin, so that the portable hard disk box 10 and the mobile phone continue to transmit data.

[0033] After the first TYPE C interface 21 and the second TYPE C interface 22 of the portable hard disk box 10 are disconnected from the mobile phone and the charger, the microprocessor 25 recognizes it and the fourth power switch tube 274 will continue to be turned on to supply power to the hard disk of the portable hard disk box 10. This way, there is enough time to protect the data and avoid the risk of data loss.

[0034] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A portable hard disk box, comprising a box body and a circuit module arranged in the box body, characterized in that: The circuit module includes a first TYPE C interface, a second TYPE C interface, a battery interface, a PD chip, a microprocessor, a battery management chip, a power tube switch circuit, a buck chip and a battery connected to the battery interface. The power tube switch circuit includes a first power switch tube, a second power switch tube, a third power switch tube, a fourth power switch tube and a fifth power switch tube. The first TYPE C interface connects the PD chip and the first power switch tube, the second TYPE C interface connects the PD chip and the second power switch tube, the microprocessor connects the PD chip and the battery management chip, the buck chip connects the third power switch tube and the fifth power switch tube, the battery management chip is also connected to the battery interface, the fourth power switch tube and the fifth power switch tube, the PD chip is also connected to the first power switch tube and the second power switch tube, and the microprocessor is also connected to the third power switch tube, the fourth power switch tube and the fifth power switch tube.

2. The portable hard disk box according to claim 1, characterized in that: The source of the first power switch tube is connected to the source of the second power switch tube, the drain of the first power switch tube is connected to the first TYPE C interface, and the gate of the first power switch tube is connected to the PD chip.

3. The portable hard disk box according to claim 2, characterized in that: The drain of the second power switch tube is connected to the second TYPE C interface, and the gate of the second power switch tube is connected to the PD chip.

4. The portable hard disk box according to claim 3, characterized in that: The source of the third power switch tube is connected to the source of the fourth power switch tube, the drain of the third power switch tube is connected to the source of the fifth power switch tube, and the gate of the third power switch tube is connected to the microprocessor.

5. The portable hard disk box according to claim 4, characterized in that: The drain of the fourth power switch tube is connected to the battery management chip, and the gate of the fourth power switch tube is connected to the microprocessor.

6. The portable hard disk case according to claim 5, characterized in that: The drain of the fifth power switch tube is connected to the battery management chip, and the gate of the fifth power switch tube is connected to the microprocessor.

7. The portable hard disk case according to claim 6, characterized in that: The source of the first power switch tube, the source of the second power switch tube and the buck chip are powered by a bus voltage.

8. The portable hard disk case according to claim 7, characterized in that: The source of the third power switch tube and the source of the fourth power switch tube are powered by a system voltage.

9. The portable hard disk case according to claim 1, wherein: The circuit module also includes a USB hub for connecting a hard disk, a hard disk bridge chip and a detachable hard disk, and the microprocessor is connected to the USB hub and the hard disk bridge chip.

10. The portable hard disk case according to claim 9, characterized in that: The circuit module also includes a USB2.0 switch and a USB3.0 switch. The USB hub is connected to the USB2.0 switch and the USB3.0 switch respectively. The microprocessor is connected to the USB2.0 switch and the USB3.0 switch respectively. The USB2.0 switch and the USB3.0 switch are connected to the first TYPE C interface respectively.

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