A storage device and an electronic device

Abstract

The present application discloses a storage device and an electronic device. The storage device includes: an interface, the interface including a pre-charge pin and a power supply pin; wherein, the pre-charge pin protrudes from the power supply pin; a surge protection circuit, when the interface is plugged into an external terminal such that the pre-charge pin is electrically connected to a corresponding interface contact of the external terminal, receiving a pre-charge power signal sent by the external terminal through the pre-charge pin and limiting the current of the pre-charge power signal; a storage function circuit, receiving the pre-charge power signal whose current is limited by the surge protection circuit to perform pre-charging; when the power supply pin is electrically connected to a corresponding interface contact of the external terminal, the storage function circuit receives a working power signal sent by the external terminal through the power supply pin. By the above method, the present application absorbs a great surge current generated during the plugging and unplugging of the interface with the external terminal through the surge protection circuit, so as to effectively protect the storage device from being damaged by overcurrent, and the implementation cost is relatively low.

Description

Technical Field

[0001] This application relates to the technical field of data storage, and particularly to a storage device and an electronic device. Background Art

[0002] In a storage device, to ensure the effective progress of data storage and the requirements of corresponding timings, during the power-on process of the storage device, usually before it reaches a stable working state, the storage device, specifically the capacitor components in the storage device, is pre-charged first, so that when the storage device receives a working power supply signal, it can quickly enter the working state.

[0003] Among them, to ensure that the timing of the pre-charge power supply signal and the working power supply signal input into the storage device is different, the gold fingers corresponding to the interfaces in the storage device usually adopt a design of long and short metal contact pins, and the long pins are used to pre-charge the storage device in advance during the plugging and unplugging process. However, because the current is too large at the moment when a single metal pin realizes electrical connection during plugging and unplugging, generally a relatively high current surge will occur. In the lightest case, it will wear the storage device, and in the worst case, it will directly damage the storage device. In the existing surge current (instantaneous large current) protection methods, a relatively conventional method is to use a current-limiting switch chip or a fuse to protect the subsequent circuit to prevent the plugging and unplugging transient current from damaging the subsequent circuit.

[0004] However, the cost of the current-limiting switch is usually high and there are many peripheral components, which will occupy a relatively large device area; while the fuse can only be used for over-current protection, and in the case of over-current, the front and rear end lines will be disconnected to achieve the role of protecting the subsequent circuit, and it cannot achieve the role of surge current resistance under the condition of meeting continuous current (uninterrupted current). Summary of the Invention

[0005] This application provides a storage device to solve the problems in the prior art that the surge current protection adopted by the storage device has high implementation cost, occupies a relatively large device area, or cannot resist surge current under the condition of meeting continuous current.

[0006] To solve the above technical problems, a technical solution adopted by this application is: to provide a storage device, wherein the storage device includes: an interface, the interface includes a precharge pin and a power pin; wherein, the precharge pin protrudes from the power pin; a surge protection circuit, electrically connected between the precharge pin and the power pin, so that when the interface is plugged into an external terminal, making the precharge pin electrically connected to the corresponding interface contact of the external terminal, the precharge power signal sent by the external terminal is received through the precharge pin, and the precharge power signal is current-limited; a storage function circuit, electrically connected to the power pin and the surge protection circuit, the storage function circuit receives the precharge power signal current-limited by the surge protection circuit to perform precharging; when the power pin is electrically connected to the corresponding interface contact of the external terminal, the storage function circuit receives the working power signal sent by the external terminal through the power pin.

[0007] Wherein, the number of the precharge pin, the power pin and the surge protection circuit is the same, and each includes at least one, and each surge protection circuit is electrically connected between the corresponding precharge pin and the power pin.

[0008] Wherein, the power pin includes a first power pin and a second power pin. After the first power pin and the second power pin are electrically connected, they are electrically connected to one end of the surge protection circuit, and the other end of the surge protection circuit is electrically connected to the precharge pin.

[0009] Wherein, the power pin includes a first power pin and a second power pin. After the first power pin and the precharge pin are electrically connected, they are electrically connected to one end of the surge protection circuit, and the other end of the surge protection circuit is electrically connected to the second power pin.

[0010] Wherein, the surge protection circuit is one of a resistor, a choke coil, and a low-pass filter.

[0011] Wherein, the surge protection circuit is a variable resistor. When a transient large current flows through it, it presents a high resistance state, and when a small current flows through it, it presents a low resistance state.

[0012] Wherein, the storage device further includes a power conversion circuit, which is electrically connected to the power pin, the surge protection circuit and the storage function circuit, so as to convert the voltage or current of the precharge power signal or the working power signal into a set value and send it to the storage function circuit when receiving the precharge power signal sent by the surge protection circuit or the working power signal sent by the power pin.

[0013] Wherein, the interface further includes a communication pin, the storage function circuit includes a control sub-circuit and a storage sub-circuit, the communication pin is electrically connected to the external terminal, the control sub-circuit is electrically connected to the communication pin, the power conversion circuit and the storage sub-circuit, and the control sub-circuit receives the data information sent by the external intelligent terminal through the communication pin and sends the data information to the storage sub-circuit for storage.

[0014] Among them, the interface is a SATA interface.

[0015] To solve the above technical problems, another technical solution adopted in this application is: to provide an electronic device, among which, the electronic device includes the storage device described in any one of the above.

[0016] The beneficial effect of this application is: different from the prior art, the storage device in this application includes: an interface, a surge protection circuit, and a storage function circuit; among them, the interface includes a pre-charge pin and a power pin, and the surge protection circuit is electrically connected between the pre-charge pin and the power pin, so that when the interface is plugged into an external terminal and the pre-charge pin is electrically connected to the corresponding interface contact of the external terminal, a pre-charge power signal sent by the external terminal is received through the pre-charge pin, and after the surge protection circuit limits the current of the pre-charge power signal, it is sent to the storage function circuit for pre-charging, so as to effectively protect the storage device from being damaged by over-current during pre-charging, and the corresponding implementation cost is also relatively low, so that when the power pin is electrically connected to the corresponding interface contact of the external terminal subsequently, the working power signal sent by the external terminal can be effectively received through the power pin. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. Among them:

[0018] Figure 1 is a schematic structural diagram of the first embodiment of the storage device of this application;

[0019] Figure 2 is Figure 1 a schematic structural diagram of a specific embodiment of the interface in the storage device in;

[0020] Figure 3 is a schematic structural diagram of the second embodiment of the storage device of this application;

[0021] Figure 4 is a schematic structural diagram of the third embodiment of the storage device of this application;

[0022] Figure 5 is a schematic structural diagram of a specific embodiment of the storage device of this application;

[0023] Figure 6 is Figure 5 a schematic diagram of the corresponding function definition of each pin of the interface in the storage device in. Detailed Description of the Embodiments

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0025] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the first embodiment of the storage device of the present application. In this embodiment, the storage device 10 includes: an interface 11, a surge protection circuit 12, and a storage function circuit 13.

[0026] Among them, a storage device 10 provided in the present application may specifically be a storage hard disk, or a USB (universal serial bus) flash drive, or any other reasonable storage electronic device, so as to be electrically connected to an external terminal 20 in a pluggable manner through a communication interface. For example, it can be electrically connected to any reasonable intelligent terminal such as a mobile phone or a personal computer, and then data information interaction and storage can be performed with the external terminal 20.

[0027] It can be understood that in order to effectively perform data storage in the storage device 10, certain power-on timing requirements usually need to be met. Therefore, when the external terminal 20 powers on the storage device 10 to send data information to it, in order to ensure the power-on timing requirements of the backend circuit of the storage device 10, before it enters a stable working state, the storage function circuit 13 in the storage device 10 usually needs to be pre-charged, so that when the storage device 10 receives a working power signal, it can quickly enter the working state to prevent timing errors in data storage.

[0028] Specifically, the interface 11 in the storage device 10 specifically includes a pre-charge pin 111 and a power pin 112. When the interface 11 is plugged into the corresponding communication interface of the external terminal 20 and electrically connected to its corresponding interface contact, the power signal sent by the external terminal 20 can be received through the pre-charge pin 111 and the power pin 112 to perform power-on work.

[0029] Among them, the pre-charge pin 111 protrudes relative to the power pin 112. When the interface 11 is plugged into the corresponding communication interface of the external terminal 20, the pre-charge pin 111 contacts the corresponding interface contact of the external terminal 20 earlier than the power pin 112, so that the corresponding power signal can be received from the external terminal 20 faster, and pre-charging can be performed through the pre-charge pin 111.

[0030] Optionally, in one embodiment, the pin length of the pre-charge pin 111 is greater than that of the power supply pin 112. Further, the minimum distance between the pre-charge pin 111 and the plane where the opening of the interface 11 is located is less than the minimum distance between the power supply pin 112 and the plane where the opening of the interface 11 is located.

[0031] However, since the pin of the pre-charge pin 111 protrudes more than other pins, when it first contacts the corresponding interface contact of the external terminal 20, usually only one metal pin of it is electrically connected to the external terminal 20, so that a surge of a relatively high current, that is, an instantaneous large current, will occur at the moment of insertion. Furthermore, it may damage the corresponding electronic devices in the storage device 10 and even cause insulation breakdown. Therefore, it is necessary to avoid the occurrence of such an instantaneous large current in the storage device 10 as much as possible.

[0032] Further, the surge protection circuit 12 is electrically connected between the pre-charge pin 111 and the power supply pin 112. When the interface 11 of the storage device 10 is inserted into the communication interface of the external terminal 20 and the pre-charge pin 111 is electrically connected to the corresponding interface contact of the external terminal 20, the storage device 10 can receive the pre-charge power signal sent by the external terminal 20 through the pre-charge pin 111, and the pre-charge power signal will flow to the backend circuit of the storage device 10 after passing through the surge protection circuit 12.

[0033] It can be seen from this that the surge protection circuit 12 can absorb the pre-charge power signal to a certain extent to prevent the occurrence of an instantaneous peak current in the pre-charge power signal, that is, it can limit the current of the pre-charge power signal, and further prevent damage to the backend circuit of the storage device 10 during the pre-charge process.

[0034] Among them, the storage function circuit 13 is the circuit in the storage device 10 that specifically interacts with the external terminal 20 for data information, that is, the circuit that needs to be protected. The storage function circuit 13 is further electrically connected to the power supply pin 112 and the surge protection circuit 12, so as to be able to receive the pre-charge power signal limited by the surge protection circuit 12 in sequence for pre-charging. And when the power supply pin 112 is electrically connected to the corresponding interface contact of the external terminal 20, the storage function circuit 13 can receive the working power signal sent by the external terminal 20 through the power supply pin 112 to enter a stable working state and interact with the external terminal 20 for data information and storage.

[0035] It is understandable that after entering the stable working state, the pre-charge pin 111 can also be used as a backup for the power signal, so that when the power pin 112 fails, the working power signal sent by the external terminal 20 can be received through the pre-charge pin 111, and then used to supply power to the storage function circuit 13 for operation.

[0036] Optionally, the surge protection circuit 12 is one of a resistor, a choke coil, and a low-pass filter, or a sub-circuit composed of one or more combinations of any reasonable electronic devices such as a resistor, a choke coil, and a low-pass filter. The present application does not limit this.

[0037] Optionally, the surge protection circuit 12 is a variable resistor, and when a large instantaneous current flows through it, it presents a high-resistance state to be able to suppress the large instantaneous current; while when a small current flows through it, it presents a low-resistance state to be able to normally receive the working power signal.

[0038] In one embodiment, as Figure 2 shown, Figure 2 is Figure 1 a schematic structural diagram of a specific embodiment of the interface in the storage device. The interface 11 is specifically a SATA (Serial ATA) interface 11, and a pre-charge current-limiting resistor (i.e., the surge protection circuit 12) is connected between the long pin (P7, i.e., the pre-charge pin 111) and the short pins (P8, P9, i.e., the power pins 112) among the three pins of the power input at the input end of the interface 11, so as to be able to achieve the function of resisting surge current during the process of plugging and unplugging through the interface 11.

[0039] In other embodiments, the interface 11 can also be any other reasonable communication port applicable to electronic products with hot plugging function or long and short pin design, and the resistance value of the corresponding current-limiting resistor can be specifically set according to the specification requirements of the electronic product. The present application does not limit this.

[0040] Please continue to refer to Figure 3 , Figure 3 which is a schematic structural diagram of the second embodiment of the storage device of the present application. This embodiment is based on the first embodiment of the storage device 10 provided by the present application, and the storage device 10 further includes a power conversion circuit 14.

[0041] It is understandable that for each sub-circuit in the storage device 10, since the implemented functions of each sub-circuit are different, the corresponding required power supply signals will also be different. For example, the required voltage levels of each sub-circuit will be different, and are different from the voltage level of the power supply signal obtained by the interface 11 from the external terminal 20. Therefore, after the power supply signal sent by the external terminal 20 is obtained by the interface 11, it is necessary to perform power conversion on this power supply signal and then send it to the corresponding sub-circuit.

[0042] Specifically, the power conversion circuit 14 is electrically connected to the power supply pin 112, the surge protection circuit 12, and the storage function circuit 13. After receiving the pre-charge power supply signal sent by the surge protection circuit 12, it converts the voltage or current of the pre-charge power supply signal into a set value and then sends it to the storage function circuit 13 for pre-charging; or, when receiving the working power supply signal sent by the power supply pin 112, it converts the voltage or current of this working power supply signal into one or more set values and then sends it to the corresponding sub-circuits in the storage function circuit 13.

[0043] It is understandable that the set value can be any reasonable voltage value such as 3.3V, 5V, or 6V, etc., and is specifically determined by the specific working power supply requirements of the storage function circuit 13, and the present application does not limit this.

[0044] Please continue to refer to Figure 4 , Figure 4 which is a schematic structural diagram of the third embodiment of the storage device of the present application. This embodiment is based on the second embodiment of the storage device provided by the present application. The interface 11 further includes a communication pin 113, and the storage function circuit 13 further includes a control sub-circuit 131 and a storage sub-circuit 132.

[0045] Among them, the communication pin 113 is electrically connected to the external terminal 20, and the control sub-circuit 131 is electrically connected to the communication pin 113, the power conversion circuit 14, and the storage sub-circuit 132. The control sub-circuit 131 can receive the data information sent by the external intelligent terminal through the communication pin 113, and send the received data information to the storage sub-circuit 132 for storage.

[0046] Please continue to refer to Figure 5 and Figure 6 wherein, Figure 5 is a schematic structural diagram of a specific embodiment of the storage device of the present application, Figure 6 is Figure 5 a schematic diagram of the corresponding function definition of each pin of the interface in the storage device in

[0047] Specifically, the interface 11 in the storage device 10 includes multiple pins, so as to be able to correspondingly receive power supply signals of multiple different voltage levels and correspondingly implement the functions of multiple different differential communication signals.

[0048] Optionally, the number of pre-charge pins 111, power supply pins 112, and surge protection circuits 12 is the same and each includes at least one. Each surge protection circuit 12 corresponds to a pre-charge pin 111 and a power supply pin 112 to form an independent loop capable of receiving a power signal sent by the external terminal 20, that is, each surge protection circuit 12 is electrically connected between the corresponding pre-charge pin 111 and power supply pin 112. The power signals sent by the external terminal 20 received by different surge protection circuits 12 may be the same or different, and the present application does not limit this. In other embodiments, when there are at least two pre-charge pins 111 and power supply pins 112 respectively, only some or one group of the pre-charge pins 111 and power supply pins 112 may be correspondingly connected to the surge protection circuit 12, and the other pre-charge pins 111 and power supply pins 112 may be directly connected to the communication interface of the external terminal 20, and the present application does not limit this.

[0049] In one embodiment, the power supply pin 112 includes a first power supply pin (not shown in the figure) and a second power supply pin (not shown in the figure). After the first power supply pin is electrically connected to the second power supply pin, that is, short-circuited, it is electrically connected to one end of the surge protection circuit 12, and the other end of the surge protection circuit 12 is electrically connected to the pre-charge pin 111.

[0050] In another embodiment, the power supply pin 112 includes a first power supply pin and a second power supply pin. After the first power supply pin is electrically connected to the pre-charge pin 111, that is, short-circuited, it is electrically connected to one end of the surge protection circuit 12, and the other end of the surge protection circuit 12 is electrically connected to the second power supply pin.

[0051] Wherein, the interface 11 is specifically a SATA interface and includes S1 - S7 signal pins and P1 - P15 power pins. It can be understood that, among them, P7 is the pre-charge pin 111, and P8 and P9 correspond to the first power supply pin and the second power supply pin respectively, and the voltage level of the received power signal is 5V; and P13, P14, and P15 correspond to another group of pre-charge pin 111, first power supply pin, and second power supply pin respectively, and the voltage level of the received power signal can be 12V.

[0052] It can be seen from this that after P8 and P9 are short-circuited, they are electrically connected to the surge protection circuit 12, that is, one end of the current-limiting resistor Rx, and the other end of the current-limiting resistor Rx is electrically connected to P7. After P13 and P14 are short-circuited first, they can be connected to one end of another current-limiting resistor (not shown in the figure), and the other end of the current-limiting resistor is connected to P15. In other embodiments, there is no other current-limiting resistor in the SATA interface, and P13, P14, and P15 are short-circuited to each other.

[0053] On the other hand, the present application also provides an electronic device, wherein the electronic device includes the storage device 10 described in any one of the above.

[0054] Different from the prior art, the storage device in the present application includes: an interface, a surge protection circuit, and a storage function circuit; wherein, the interface includes a pre-charge pin and a power supply pin, and the surge protection circuit is electrically connected between the pre-charge pin and the power supply pin. When the interface is plugged into an external terminal and the pre-charge pin is electrically connected to the corresponding interface contact of the external terminal, a pre-charge power signal sent by the external terminal is received through the pre-charge pin, and after the surge protection circuit limits the current of the pre-charge power signal, it is sent to the storage function circuit for pre-charging, so as to effectively protect the storage device from being damaged by over-current during pre-charging, and the corresponding implementation cost is also relatively low. When the power supply pin is electrically connected to the corresponding interface contact of the external terminal subsequently, the working power signal sent by the external terminal can be effectively received through the power supply pin.

[0055] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A storage device, characterized in that, The storage device includes: An interface, the interface includes a pre-charge pin and a power supply pin; wherein, the pre-charge pin protrudes from the power supply pin; A surge protection circuit, electrically connected between the pre-charge pin and the power supply pin, to receive a pre-charge power signal sent by the external terminal through the pre-charge pin and limit the current of the pre-charge power signal when the interface is plugged into an external terminal, so that the pre-charge pin is electrically connected to a corresponding interface contact of the external terminal; A storage function circuit, electrically connected to the power supply pin and the surge protection circuit, the storage function circuit receives the pre-charge power signal limited by the surge protection circuit for pre-charging; when the power supply pin is electrically connected to a corresponding interface contact of the external terminal, the storage function circuit receives a working power signal sent by the external terminal through the power supply pin; A power conversion circuit, the power conversion circuit is electrically connected to the power supply pin, the surge protection circuit and the storage function circuit, to convert the voltage or current of the pre-charge power signal or the working power signal into a set value and send it to the storage function circuit when receiving the pre-charge power signal sent by the surge protection circuit or the working power signal sent by the power supply pin.

2. The storage device according to claim 1, wherein: The number of the pre-charge pins, the power supply pins and the surge protection circuits is the same, and each includes at least one, wherein each surge protection circuit is electrically connected between a corresponding pre-charge pin and a power supply pin.

3. The storage device according to claim 1, wherein: The power supply pin includes a first power supply pin and a second power supply pin. After the first power supply pin and the second power supply pin are electrically connected, they are electrically connected to one end of the surge protection circuit, and the other end of the surge protection circuit is electrically connected to the pre-charge pin.

4. The storage device according to claim 1, wherein: The power supply pin includes a first power supply pin and a second power supply pin. After the first power supply pin and the pre-charge pin are electrically connected, they are electrically connected to one end of the surge protection circuit, and the other end of the surge protection circuit is electrically connected to the second power supply pin.

5. The storage device according to claim 1, wherein: The surge protection circuit is one of a resistor, a choke coil, and a low-pass filter.

6. The storage device according to claim 1, wherein: The surge protection circuit is a variable resistor, which is in a high-resistance state when a transient large current flows through it and in a low-resistance state when a small current flows through it.

7. The storage device according to claim 1, wherein: The interface further includes communication pins, the storage function circuit includes a control sub-circuit and a storage sub-circuit, the communication pins are electrically connected to the external terminal, the control sub-circuit is electrically connected to the communication pins, the power conversion circuit and the storage sub-circuit, the control sub-circuit receives data information sent by the external terminal through the communication pins, and sends the data information to the storage sub-circuit for storage.

8. The storage device according to any one of claims 1-7, characterized in that The interface is a SATA interface.

9. An electronic device, characterized in that, The electronic device includes the storage device according to any one of claims 1-8.

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