CN107132900A - A kind of hard disk backup power supply system and storage device - Google Patents
A kind of hard disk backup power supply system and storage device Download PDFInfo
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- CN107132900A CN107132900A CN201710379800.2A CN201710379800A CN107132900A CN 107132900 A CN107132900 A CN 107132900A CN 201710379800 A CN201710379800 A CN 201710379800A CN 107132900 A CN107132900 A CN 107132900A
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- 239000003792 electrolyte Substances 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
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Abstract
This application discloses a kind of hard disk backup power supply system and storage device, wherein, the hard disk backup power supply system is the electricity storage module charging after by current limliting module, operating voltage is depressured, when working power breaks down, the boost module is started working, it will be powered after the boost in voltage of the electricity storage module for the hard disk of storage device, so that the hard disk completes not preserving the storage of data after accident power-off, it is to avoid the loss of data., can be using the isometric less electric capacity of ion-conductance perhaps super capacitor as the electricity storage module, it is achieved thereby that reducing the purpose of the volume of the hard disk backup power supply system and the rated voltage of the electricity storage module of the hard disk backup power supply system is relatively low.Further, the current limliting module is simple compared to the circuit structure of voltage reduction module, can reduce the complexity in circuits of the hard disk backup power supply system.
Description
Technical Field
The present application relates to the field of circuit design technologies, and more particularly, to a hard disk power backup system and a storage device.
Background
The storage device is widely applied to various electronic products and electronic service systems, and for some storage devices with special application scenes, the allocation of a hard disk power-on system is an important means for ensuring the integrity of hard disk data in the storage device.
Taking a storage device applied to a search server as an example, in order to ensure that the storage device stores unsaved data after the system is powered down unexpectedly, a hard disk power backup system needs to be provided for the storage device, so that a working power supply required for storing the data is provided for the storage device by the hard disk power backup system after the external power supply of the system is stopped.
Hard disk spare power system among the prior art mainly relies on electrolytic capacitor to provide working power supply for storage device through the step-down circuit after system's external power supply stops, and concrete structure is shown as figure 1, includes: the voltage boosting circuit, the voltage reducing circuit, the OR gate and the electrolytic capacitor are connected in series; in the application, under the normal condition, working power supplies charges for electrolytic capacitor after stepping up through the boost circuit, and after the external outage, storage device's detection circuit detects that working power supplies is unusual, sends the start instruction to the buck circuit, starts the buck circuit, and the electric quantity of electrolytic capacitor storage passes through the buck circuit and steps down the back and supply power for storage device through the OR gate to make storage device preserve the data that do not preserve when unexpected outage, avoid data loss.
However, the volume of the electrolytic capacitor is large, which causes the whole volume of the hard disk power supply system to be large, and the requirement of increasingly miniaturization of the storage device is difficult to meet.
Disclosure of Invention
In order to solve the technical problem, the invention provides a hard disk power backup system and a storage device, so as to achieve the purpose of reducing the volume of the hard disk power backup system and further reducing the volume of the storage device.
In order to achieve the technical purpose, the embodiment of the invention provides the following technical scheme:
the utility model provides a hard disk power-on system, is applied to storage device, storage device includes the hard disk, hard disk power-on system includes: the power storage module, the current limiting module, the boosting module and the logic module; wherein,
the input end of the current limiting module is connected with a working power supply of the storage device, and the output end of the current limiting module is connected with the input ends of the electricity storage module and the boosting module;
the first input end of the logic module is connected with a working power supply of the storage device, the second input end of the logic module is connected with the output end of the boosting module, and the output end of the logic module is connected with the hard disk;
the current limiting module is used for reducing the voltage of the input working power supply to the voltage at two ends of the electricity storage module, then outputting the voltage to the electricity storage module, and stopping outputting the voltage to the electricity storage module when the voltage at two ends of the electricity storage module is greater than or equal to a preset voltage;
the boosting module is used for boosting the output voltage of the electricity storage module and then outputting the boosted output voltage to the logic module after receiving a starting instruction;
and the logic module is used for performing OR operation on the voltages input by the first input end and the second input end and then outputting the voltages.
Optionally, the electricity storage module is an ion capacitor or a super capacitor.
Optionally, one end of the power storage module, which faces away from the current limiting module, is grounded.
Optionally, the logic module is an or gate.
Optionally, the boost module includes: the first resistor, the first triode, the first capacitor and the first diode; wherein,
one end of the first resistor is used as the input end of the boosting module, and the other end of the first resistor is connected with the drain electrode of the first triode and the anode of the first diode;
the negative electrode of the first diode is connected with one end of the first capacitor to serve as the output end of the boosting module, and one end, far away from the first diode, of the first capacitor is grounded;
and the source electrode of the first triode is grounded.
Optionally, the current limiting module includes: the second resistor, the second triode, the third resistor and the fourth resistor; wherein,
the drain electrode of the second triode is connected with one end of the second resistor and serves as the input end of the current limiting module, the grid electrode of the second triode is connected with the other end of the second resistor and one end of the third resistor, and the source electrode of the second triode is connected with one end of the fourth resistor;
and one end of the third resistor, which is far away from the second resistor, is connected with one end of the fourth resistor, which is far away from the second triode, and the end of the third resistor and the end of the fourth resistor, which are far away from the second triode, are used as the output end of the current limiting module.
Optionally, the second triode is an NPN-type triode.
A storage device, comprising: hard disk and any one above-mentioned hard disk system of being equipped with electricity.
Optionally, the hard disk is a solid state disk.
It can be seen from the foregoing technical solutions that the embodiment of the present invention provides a hard disk power backup system and a storage device, where the hard disk power backup system charges a power storage module after stepping down a working voltage through a current limiting module, and when a working power supply fails, the voltage boosting module starts to operate to boost the voltage of the power storage module and then supply power to a hard disk of the storage device, so that the hard disk completes storage of unsaved data after an unexpected power failure, thereby avoiding data loss. And the rated voltage of the power storage module of the hard disk standby power system is lower, and a capacitor with smaller volume such as an ion capacitor or a super capacitor can be used as the power storage module, so that the purpose of reducing the volume of the hard disk standby power system is realized.
Furthermore, compared with a voltage reduction module, the current limiting module is simple in circuit structure, and can reduce the circuit complexity of the hard disk standby power system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a hard disk power backup system in the prior art;
fig. 2 is a schematic structural diagram of a hard disk power backup system according to an embodiment of the present application;
fig. 3 is a schematic circuit diagram of a boost module according to an embodiment of the present application;
fig. 4 is a schematic circuit diagram of a current limiting module according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a hard disk power supply system, as shown in fig. 2, is applied to storage device, storage device includes the hard disk, the hard disk power supply system includes: the power storage module 400, the current limiting module 100, the boost module 200 and the logic module 300; wherein,
the input end of the current limiting module 100 is connected with the working power supply of the storage device, and the output end of the current limiting module 100 is connected with the input ends of the power storage module 400 and the boosting module 200;
a first input end of the logic module 300 is connected with a working power supply of the storage device, a second input end of the logic module 300 is connected with an output end of the boosting module 200, and an output end of the logic module 300 is connected with the hard disk;
the current limiting module 100 is configured to step down the input working power supply to a voltage across the power storage module 400, output the voltage to the power storage module 400, and stop outputting the voltage to the power storage module 400 when the voltage across the power storage module 400 is greater than or equal to a preset voltage;
the boosting module 200 is configured to boost the output voltage of the power storage module 400 and output the boosted output voltage to the logic module 300 after receiving a start instruction;
the logic module 300 is configured to perform an or operation on the voltages input by the first input terminal and the second input terminal and output the voltages.
In the hard disk backup system in the prior art, the operating voltage of 12V is generally boosted to 35V to charge the electrolytic capacitor, and when the operating voltage of 12V fails, the voltage of the electrolytic capacitor of 35V is reduced to 12V by the voltage reduction circuit to supply power to the storage device. However, since the electrolyte of the electrolytic capacitor is the electrolyte, the life attenuation of the electrolyte is very serious under the condition of high temperature, which is difficult to ensure that the hard disk standby power system has a long service life, and in addition, the volume of the high-voltage electrolytic capacitor is also large, which is not beneficial to the miniaturization of the hard disk standby power system, and the high-voltage standby power of the hard disk standby power system is difficult to be compatible with the super capacitor due to the working characteristics of the high-voltage standby power.
In this embodiment, the hard disk power backup system reduces the voltage of the working voltage through the current limiting module 100 and then charges the power storage module 400, when the working power supply fails, the voltage boosting module 200 starts to work to supply power to the hard disk of the storage device after the voltage of the power storage module 400 is boosted, so that the hard disk completes the storage of unsaved data after the power is cut off unexpectedly, and the data loss is avoided. In addition, the rated voltage of the power storage module 400 of the hard disk power backup system is low, and a capacitor with a small volume, such as an ion capacitor or a super capacitor, can be used as the power storage module 400, so that the purpose of reducing the volume of the hard disk power backup system is achieved.
In addition, the high-temperature stability of the ion capacitor is far higher than that of an electrolytic capacitor, and the service life of a hard disk standby power system can be prolonged. The hard disk standby power system compatible with the super capacitor or the special-shaped super capacitor provides technical support for the later ultra-thin SSD standby power scheme.
Further, the current limiting module 100 has a simple circuit structure compared to a voltage dropping module, and can reduce the circuit complexity of the hard disk power backup system.
It should be noted that the start instruction refers to an instruction sent to the voltage boost circuit by the detection circuit of the storage device after detecting that the working power supply is abnormal, so that the voltage boost circuit starts to work.
It should also be noted that the logic module 300 is generally an or gate.
In one embodiment of the present application, the power storage module 400 is an ion capacitor or a super capacitor. In other embodiments of the present application, the power storage module 400 may also be a profiled super capacitor. The present application does not limit the specific type of the power storage module 400, which is determined according to the actual situation.
In another embodiment of the present application, an end of the power storage module 400 facing away from the current limiting module 100 is grounded.
In other embodiments of the present application, the end of the power storage module 400 facing away from the current limiting module 100 may also be connected to other fixed potentials, such as 1V, -1V, etc. The present application does not limit this, which is determined by the actual situation.
On the basis of the above embodiments, in a specific embodiment of the present application, as shown in fig. 3, the boost module 200 includes: the circuit comprises a first resistor R1, a first triode Q1, a first capacitor C1 and a first diode D1; wherein,
one end of the first resistor R1 is used as the input end of the boost module 200, and the other end is connected to the drain of the first triode Q1 and the positive electrode of the first diode D1;
the cathode of the first diode D1 is connected to one end of the first capacitor C1 as the output end of the boost module 200, and one end of the first capacitor C1 away from the first diode D1 is grounded;
the source of the first transistor Q1 is grounded.
Referring to fig. 4, the current limiting module 100 includes: the circuit comprises a second resistor R2, a second triode Q2, a third resistor R3 and a fourth resistor R4; wherein,
a drain of the second transistor Q2 is connected to one end of the second resistor R2, and serves as an input end of the current limiting module 100, a gate of the second transistor Q2 is connected to the other end of the second resistor R2 and one end of the third resistor R3, and a source of the second transistor Q2 is connected to one end of the fourth resistor R4;
one end of the third resistor R3, which is far away from the second resistor R2, is connected to one end of the fourth resistor R4, which is far away from the second transistor Q2, and serves as an output end of the current limiting module 100.
In the current limiting module 100, when the current is smaller than the preset voltage, the second resistor R2 provides a bias current for the second transistor Q2, the second transistor Q2 is in saturation conduction and does not control the current, when the current is greater than or equal to the preset voltage, the voltage drop across the fourth resistor R4 increases, the voltage drop across the fourth resistor R4 and the sum of the voltage drop across the second transistor Q2 approach the voltage drop across the third resistor R3, and then the current passing through the second transistor Q2 starts to be limited, so as to limit the current at a certain level. The second transistor Q2 is an NPN transistor, and in other embodiments of the present application, the second transistor Q2 may also be a voltage regulator. The present application does not limit this, which is determined by the actual situation.
It should be noted that the current limiting module 100 and the voltage boosting module 200 include two triodes together, which saves two triodes compared with the hard disk power backup system in the prior art, reduces the complexity of the circuit, and reduces the cost of the hard disk power backup system.
Correspondingly, an embodiment of the present application further provides a storage device, including: hard disk and as stated in any embodiment above hard disk power backup system.
Preferably, the hard disk is a solid state disk.
To sum up, this application embodiment provides a hard disk is equipped with electric system and storage device, wherein, the hard disk is equipped with electric system and does after current-limiting module 100 steps down operating voltage electricity storage module 400 charges, when working power supply breaks down, boost module 200 begins to work, will the hard disk power supply for storage device after the voltage boost of electricity storage module 400, so that the hard disk accomplishes the storage of not saving data after the unexpected outage, has avoided losing of data. In addition, the rated voltage of the power storage module 400 of the hard disk power backup system is low, and a capacitor with a small volume, such as an ion capacitor or a super capacitor, can be used as the power storage module 400, so that the purpose of reducing the volume of the hard disk power backup system is achieved.
Further, the current limiting module 100 has a simple circuit structure compared to a voltage dropping module, and can reduce the circuit complexity of the hard disk power backup system.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a hard disk power backup system which characterized in that is applied to storage device, storage device includes the hard disk, hard disk power backup system includes: the power storage module, the current limiting module, the boosting module and the logic module; wherein,
the input end of the current limiting module is connected with a working power supply of the storage device, and the output end of the current limiting module is connected with the input ends of the electricity storage module and the boosting module;
the first input end of the logic module is connected with a working power supply of the storage device, the second input end of the logic module is connected with the output end of the boosting module, and the output end of the logic module is connected with the hard disk;
the current limiting module is used for reducing the voltage of the input working power supply to the voltage at two ends of the electricity storage module, then outputting the voltage to the electricity storage module, and stopping outputting the voltage to the electricity storage module when the voltage at two ends of the electricity storage module is greater than or equal to a preset voltage;
the boosting module is used for boosting the output voltage of the electricity storage module and then outputting the boosted output voltage to the logic module after receiving a starting instruction;
and the logic module is used for performing OR operation on the voltages input by the first input end and the second input end and then outputting the voltages.
2. The system of claim 1, wherein the power storage module is an ionic capacitor or a super capacitor.
3. The system of claim 1, wherein an end of the power storage module facing away from the current limiting module is grounded.
4. The system of claim 1, wherein the logic module is an or gate.
5. The system of claim 1, wherein the boost module comprises: the first resistor, the first triode, the first capacitor and the first diode; wherein,
one end of the first resistor is used as the input end of the boosting module, and the other end of the first resistor is connected with the drain electrode of the first triode and the anode of the first diode;
the negative electrode of the first diode is connected with one end of the first capacitor to serve as the output end of the boosting module, and one end, far away from the first diode, of the first capacitor is grounded;
and the source electrode of the first triode is grounded.
6. The system of claim 1, wherein the current limiting module comprises: the second resistor, the second triode, the third resistor and the fourth resistor; wherein,
the drain electrode of the second triode is connected with one end of the second resistor and serves as the input end of the current limiting module, the grid electrode of the second triode is connected with the other end of the second resistor and one end of the third resistor, and the source electrode of the second triode is connected with one end of the fourth resistor;
and one end of the third resistor, which is far away from the second resistor, is connected with one end of the fourth resistor, which is far away from the second triode, and the end of the third resistor and the end of the fourth resistor, which are far away from the second triode, are used as the output end of the current limiting module.
7. The system of claim 6, wherein the second transistor is an NPN transistor.
8. A storage device, comprising: hard disk and a hard disk power-backup system according to any of claims 1 to 7.
9. The storage device of claim 8, wherein the hard disk is a solid state disk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710379800.2A CN107132900A (en) | 2017-05-25 | 2017-05-25 | A kind of hard disk backup power supply system and storage device |
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| CN201710379800.2A CN107132900A (en) | 2017-05-25 | 2017-05-25 | A kind of hard disk backup power supply system and storage device |
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Cited By (1)
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Application publication date: 20170905 |