CN214670477U - Power supply capable of delaying external fan stop - Google Patents
Power supply capable of delaying external fan stop Download PDFInfo
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- CN214670477U CN214670477U CN202120807987.3U CN202120807987U CN214670477U CN 214670477 U CN214670477 U CN 214670477U CN 202120807987 U CN202120807987 U CN 202120807987U CN 214670477 U CN214670477 U CN 214670477U
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Abstract
The utility model provides a power supply with can postpone external fan stall for a coupling computer system's an at least fan, and power supply includes power conversion module, controller and auxiliary connector. The power conversion module receives an input voltage through the input end, and the controller is coupled to the power conversion module to control the power conversion module to convert the input voltage into a working voltage and a standby voltage. The auxiliary connector is coupled with the power conversion module and is used for at least one fan to be plugged in so as to receive the working voltage and the standby voltage. When the controller receives a shutdown signal from the computer system, the controller drives the power conversion module to continuously provide a standby voltage for a specific time so as to supply at least one fan to perform low-speed operation for the specific time.
Description
Technical Field
The present invention relates to a power supply, and more particularly to a power supply with a delay function for stopping an external fan.
Background
The use of computer devices is becoming more and more popular, especially in the home or office. A common computer device usually has a microcontroller (CPU) for performing calculation or data processing, and is used in combination with a motherboard for data processing. Wherein, in each computer device, a power supply for supplying power is included. After power is supplied to the mainboard, the mainboard distributes the power to each circuit or microcontroller (CPU) which needs the power to operate. Since a microcontroller (CPU) or a power component of a circuit, a controller, etc. are generally components that are prone to heat generation during operation. Therefore, a fan is required to dissipate heat to avoid the conventional operation of the whole equipment being affected by the over-high temperature.
However, because of the fans of the known computer devices, the power supply of the computer devices is usually the power required for the operation of the computer devices obtained by plugging the main board. When the computer equipment is shut down, the fan stops rotating along with the interruption of the received working voltage, and the function of continuous heat dissipation is not realized. However, when the computer device is turned off, the heat accumulated in the components that are prone to generate heat inside the computer device may not disappear instantaneously, and residual heat may still be accumulated inside the computer device. Therefore, if the heat dissipation function is not continuously provided, the heat-generating component may not be dissipated smoothly, thereby affecting the function and the service life of the component.
Therefore, how to design a power supply capable of delaying the stop of the external fan so that the fan can still operate at a low rotation speed for a specific time to continuously dissipate heat after the computer is shut down is a major subject to be studied by the authors of the present application.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a power supply with a delay function for stopping the external fan, so as to overcome the problems of the prior art. Therefore, the power supply of the present invention is used for coupling with at least one fan in a computer system, and the power supply includes a power conversion module, a controller and an auxiliary connector. The power conversion module receives input voltage through the input end, and the controller is coupled with the power conversion module and controls the power conversion module to convert the input voltage into working voltage and standby voltage. The auxiliary connector is coupled with the power conversion module and is used for at least one fan to be plugged in so as to receive the working voltage and the standby voltage. When the controller receives a shutdown signal from the computer system, the working voltage is cut off, and the controller drives the power conversion module to continuously provide a standby voltage for a specific time so as to supply at least one fan to perform low-speed operation for the specific time.
In an embodiment, the power conversion module further includes a control switch coupled to the power conversion module, the auxiliary connector and the controller. The controller is used for switching off the control switch when the working voltage supplies power so as to break a power path from the power conversion module to the auxiliary connector.
In one embodiment, the controller turns on the control switch for the specific time when the operating voltage is turned off, so that the power path is short-circuited within the specific time.
In one embodiment, the power supply further includes a main connector coupled to the power supply. The power supply provides working voltage and standby voltage to the computer system through the main connector, and the controller receives shutdown signals through the main connector.
In one embodiment, when the controller receives the shutdown signal, the controller controls the power conversion module to stop providing the working voltage.
In an embodiment, the power conversion module further includes a housing having an accommodating space for accommodating the power conversion module and the controller. The auxiliary connector and the main connector are arranged on one surface of the shell.
In an embodiment, the power supply further includes a power supply fan coupled to the power conversion module and configured to dissipate heat inside the power supply.
In an embodiment, the power conversion module further includes a boost converter, and the boost converter is coupled to the power conversion module and the auxiliary connector. The boost converter is used for converting the standby voltage into direct current voltage so as to supply at least one fan to operate at a high rotating speed for a specific time.
In one embodiment, the boost converter detects a temperature of the computer system and adjusts a voltage level of the dc voltage according to the temperature.
In an embodiment, the power conversion module further includes a power switch coupled to the input terminal and configured to receive or not receive the input voltage by turning on or off.
The main objective and efficacy of the present invention lies in utilizing the characteristic that the standby voltage still continues to supply power after the computer system is shut down, so that the controller can order about the power conversion module to continuously provide the standby voltage of the specific time. Therefore, the fan can still run at the low rotating speed for the specific time after the computer system is shut down, so that the effect of providing more perfect heat-clearing capability can be achieved.
To further clarify the technology, means, and functions of the present invention, a further understanding of the invention, as embodied and broadly described herein, may be had by reference to the following detailed description and accompanying drawings, which are incorporated in and constitute a part of this invention.
Drawings
FIG. 1 is a block diagram of a power supply with a first embodiment for delaying the stop of an external fan according to the present invention;
FIG. 2 is a block diagram of a power supply with a second embodiment for delaying the stop of an external fan according to the present invention;
fig. 3 is a schematic diagram of the power supply with the function of delaying the stop of the external fan according to the present invention.
Symbolic illustration in the drawings:
1. 1' … power supply;
1a … shell;
1B … power supply fan;
10 … power conversion module;
12 … a controller;
14 … main connector;
16 … auxiliary connector;
18 … control switch;
20 … power switch;
22 … boost converter;
100 … computer system;
100A … main board;
200 … fan;
vin … input voltage;
vw … operating voltage;
vsb … standby voltage;
vdc … dc voltage;
pg … power on signal;
sen … power-on signal;
sde … shutdown signal;
sc … control signal;
the L … power path.
Detailed Description
The technical content and the detailed description of the present invention are described below with reference to the drawings:
fig. 1 is a circuit block diagram of a first embodiment of a power supply with a delay function for stopping an external fan according to the present invention. The power supply 1 is used for converting an input voltage Vin to supply power to a motherboard 100A and at least one fan 200 of the computer system 100. The power supply 1 includes a power conversion module 10, a controller 12, a main connector 14 and an auxiliary connector 16, and the power conversion module 10 receives an input voltage Vin through an input terminal. The controller 12 is coupled to the power conversion module 10, and controls the power conversion module 10 to convert the input voltage Vin into the operating voltage Vw and the standby voltage Vsb. The main connector 14 is coupled to the power conversion module 10 and the controller 12, and is used for the main board 100A to be plugged into and coupled to the power conversion module 10, so that the main board 100A receives the operating voltage Vw and the standby voltage Vsb through the main connector 14, and transmits signals (such as, but not limited to, a power-on signal, a power-off signal, or the like) with the controller 12. The auxiliary connector 16 is coupled to the power conversion module 10, and the fan 200 is plugged into the power conversion module 10, so that the fan 200 receives the operating voltage Vw and the standby voltage Vsb through the auxiliary connector 16.
When the POWER supply 1 is activated, the controller 12 controls the POWER conversion module 10 to convert the input voltage Vin into the standby voltage Vsb, and provides the standby voltage Vsb and a POWER activation signal (POWER _ GOOD; Pg) to the motherboard 100A, so that the motherboard 100A is in standby. After the user presses the switch button to start the computer, the start signal Sen is transmitted to the controller 12, so that the controller 12 controls the power conversion module 10 to provide the working voltage Vw to power the motherboard 100A. At this time, the operating voltage Vw is also supplied to the fan 200 through the auxiliary connector 16, and the fan 200 starts to operate to dissipate heat from circuit components (e.g., CPU, controller, etc.) on the motherboard 100A. When the user presses the switch button to turn off the computer, the shutdown signal Sde is transmitted to the controller 12, so that the controller 12 controls the power conversion module 10 to stop providing the working voltage Vw, so as to return the motherboard 100A to the standby state. Since the standby voltage Vsb is not interrupted when the operating voltage Vw is cut off, the standby voltage Vsb is still supplied to the fan 200 through the auxiliary connector 16, so that the fan 200 performs a low rotation speed operation.
Further, the operating voltage Vw may be, for example and without limitation, 12V, and the standby voltage Vsb may be, for example and without limitation, 5V. Since the fan 200 is a dc fan and the rotation speed is controlled by the voltage, the 12V operating voltage Vw can control the fan 200 to operate at a high rotation speed. Conversely, the standby voltage Vsb of 5V can control the fan 200 to operate at a low speed. After the fan 200 performs the low-speed operation for the specific time (for example, but not limited to, 30 seconds), the internal circuit components stop operating (or no-load, low-load operation) because the motherboard 100A returns to the standby state, so that the internal circuit components no longer generate heat. Therefore, the fan 200 does not need to dissipate heat any more, and the controller 12 may interrupt the standby voltage Vsb at the auxiliary connector 16, so that the fan 200 stops operating due to the interruption of the standby voltage Vsb after the low-speed operation for the specific time. It should be noted that, in an embodiment of the present invention, the controller 12 controls the power conversion module 10 to convert the input voltage Vin into different voltages, such as, but not limited to, 3.3V or 1.8V, and supplies the different voltages to the motherboard 100A through the main connector 14, and the control and application thereof are well known to those skilled in the art and will not be described herein again.
Referring back to fig. 1, the power supply 1 further includes a control switch 18. The control switch 18 is coupled to the power conversion module 10, the auxiliary connector 16 and the controller 12, and the controller 12 provides a control signal Sc to control the on/off of the control switch 18, so as to short or open a path from the power conversion module 10 to the auxiliary connector 16. Specifically, when the operating voltage Vw is provided to the fan 200 through the auxiliary connector 16, the rotation speed of the fan 200 is mainly controlled by the operating voltage Vw, and the standby voltage Vsb is not effective, so the controller 12 is configured to turn off the control switch 18 when the operating voltage Vw is applied, so as to open the power path L from the power conversion module 10 to the auxiliary connector 16, and prohibit the standby voltage Vsb from being applied to the auxiliary connector 16. When the power conversion module 10 stops providing the operating voltage Vw, since the operating voltage Vw is powered off, the rotation speed of the fan 200 is mainly controlled by the standby voltage Vsb, and therefore the controller 12 is configured to turn on the control switch 18 for the specific time when the operating voltage Vw is powered off, so as to short-circuit the power path L for the specific time and enable the fan 200 to perform the low-rotation-speed operation for the specific time by using the standby voltage Vsb.
Referring to fig. 1, the power supply 1 further includes a power switch 20. The power switch 20 is coupled to the input terminal of the power conversion module 10, and is used for enabling the power conversion module 10 to receive or not receive the input voltage Vin by being turned on or off. Specifically, when the power switch 20 is turned on, a path from the input voltage Vin to the input terminal of the power conversion module 10 is short-circuited, and the input voltage Vin can be provided to the power conversion module 10 through the power switch 20. On the contrary, when the power switch 20 is turned off, the path from the input voltage Vin to the input end of the power conversion module 10 is open, and the input voltage Vin cannot be provided to the power conversion module 10 through the power switch 20.
Fig. 2 is a block diagram of a power supply with a second embodiment of the present invention, which can delay the stop of the external fan, and fig. 1 is a combined view. The power supply 1' of the embodiment of fig. 2 is different from the power supply 1 of fig. 1 in that the power supply 1 further includes a boost converter 22. The boost converter 22 is coupled between the power conversion module 10 and the auxiliary connector 16, and the boost converter 22 is configured to convert the standby voltage Vsb into the dc voltage Vdc when receiving the standby voltage Vsb (i.e. at a specific time), so as to supply the dc voltage Vdc to the fan 200. The dc voltage Vdc may be 12V. Since the boost converter 22 can perform the boost operation, the fan 200 can perform the high rotation speed operation according to the boosted dc voltage Vdc. The boost converter 22 may include an independent control unit (not shown) therein, which controls the boost converter 22 according to the feedback of the necessary loop. Alternatively, a control unit (not shown) of the boost converter 22 is integrated with the controller 12, and the controller 12 performs integrated control on the power conversion module 10 and the boost converter 22.
Further, the boost converter 22 may further adjust the rotation speed of the fan 200 according to the detected temperature of the computer system 100. The control unit (or the controller 12) inside the boost converter 22 detects the temperature of the computer system 100 and adjusts the voltage level of the dc voltage Vdc according to the temperature. When the temperature is high, a better heat dissipation capability is required, so the boost converter 22 adjusts the voltage level of the dc voltage Vdc to increase the rotation speed of the fan 200 (for example, but not limited to, 5V to 12V, or even 12V to 15V). Otherwise, the voltage level of the dc voltage Vdc is decreased to decrease the rotation speed of the fan 200 (for example, but not limited to, 12V to 5V). It should be noted that, in an embodiment of the present invention, the components not mentioned and the connection relationship and the control manner thereof are the same as those in fig. 1, and are not described herein again.
Fig. 3 is a schematic diagram of a power supply with a function of delaying the stop of the external fan according to the present invention, and fig. 1-2 are combined together. The power supply 1 further includes a housing 1A and a power fan 1B, and the housing has an accommodating space (not shown) therein, and the accommodating space accommodates the power conversion module 10 and the controller 12. The main connector 14 and the auxiliary connector 16 are open on one side of the housing 1A, which may be the same side (as shown) or different sides (not shown). The power supply fan 1B is disposed on one surface of the housing 1A, and may be disposed on any surface of the housing 1A according to actual hardware heat dissipation requirements (fig. 3 is illustrated on the same surface as the main connector 14 and the auxiliary connector 16). It should be noted that, in an embodiment of the present invention, the arrangement, number and shape of the pins of the main connector 14 and the auxiliary connector 16 are only illustrated and not limited thereto.
The above description is only the detailed description and drawings of the preferred embodiments of the present invention, but the features of the present invention are not limited thereto, and not limited to the present invention, and all the scope of the present invention should be determined by the following claims, and all the embodiments combining the spirit of the present invention and similar changes should be included in the scope of the present invention, and any skilled person in the art can easily think of the changes or modifications within the scope of the present invention.
Claims (10)
1. A power supply with a delay function for stopping an external fan, for coupling to at least one fan in a computer system, the power supply comprising:
the power supply conversion module receives an input voltage through an input end;
the controller is coupled with the power supply conversion module and controls the power supply conversion module to convert the input voltage into a working voltage and a standby voltage; and
an auxiliary connector coupled to the power conversion module and used for the at least one fan to be plugged so that the at least one fan receives the working voltage and the standby voltage;
when the controller receives a shutdown signal from the computer system, the working voltage is powered off, and the controller drives the power conversion module to continuously provide the standby voltage for a specific time so as to supply the at least one fan to perform low-speed operation for the specific time.
2. The power supply of claim 1, further comprising:
a control switch coupled to the power conversion module, the auxiliary connector and the controller;
the controller is used for switching off the control switch when the working voltage supplies power so as to break a power path from the power conversion module to the auxiliary connector.
3. The power supply according to claim 2, wherein the controller turns on the control switch for the specific time when the operating voltage is turned off, so as to short-circuit the power path within the specific time.
4. The power supply of claim 1, further comprising:
a main connector coupled to the power supply;
the power supply provides the working voltage and the standby voltage to the computer system through the main connector, and the controller receives the shutdown signal through the main connector.
5. The power supply as claimed in claim 4, wherein the controller controls the power conversion module to stop providing the operating voltage when the controller receives the shutdown signal.
6. The power supply of claim 5, further comprising:
a housing having a receiving space for receiving the power conversion module and the controller;
wherein, the auxiliary connector and the main connector are arranged on one surface of the shell.
7. The power supply of claim 1, further comprising:
and the power supply fan is coupled with the power supply conversion module and is used for providing internal heat dissipation for the power supply.
8. The power supply of claim 1, further comprising:
a boost converter coupled to the power conversion module and the auxiliary connector;
the boost converter is used for converting the standby voltage into a direct current voltage so as to supply the at least one fan to operate at a high rotating speed for the specific time.
9. The power supply of claim 8, wherein the boost converter detects a temperature of the computer system and adjusts a voltage level of the DC voltage according to the temperature.
10. The power supply of claim 1, further comprising:
and the power switch is coupled with the input end and used for enabling the power conversion module to receive or not receive the input voltage by switching on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807987.3U CN214670477U (en) | 2021-04-20 | 2021-04-20 | Power supply capable of delaying external fan stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807987.3U CN214670477U (en) | 2021-04-20 | 2021-04-20 | Power supply capable of delaying external fan stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214670477U true CN214670477U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120807987.3U Active CN214670477U (en) | 2021-04-20 | 2021-04-20 | Power supply capable of delaying external fan stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214670477U (en) |
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2021
- 2021-04-20 CN CN202120807987.3U patent/CN214670477U/en active Active
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