CN210041683U - Power supply circuit - Google Patents
Power supply circuit Download PDFInfo
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- CN210041683U CN210041683U CN201921302864.3U CN201921302864U CN210041683U CN 210041683 U CN210041683 U CN 210041683U CN 201921302864 U CN201921302864 U CN 201921302864U CN 210041683 U CN210041683 U CN 210041683U
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Abstract
The application provides a power supply circuit, includes: the heat dissipation device comprises a first power supply circuit, second power supply circuits and heat dissipation devices, wherein the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit; after an input signal is conditioned by the first power supply circuit, outputting a direct current signal, conditioning the input direct current signal by the second power supply circuit according to a starting signal of the heat dissipation equipment, outputting the conditioned direct current signal, and sending the conditioned direct current signal to the corresponding heat dissipation equipment, wherein the conditioned direct current signals output by the second power supply circuits have different starting time delays; and starting the heat dissipation equipment according to the starting time delay corresponding to the conditioned direct current signal, so that the power provided by the power supply circuit is reduced, and the normal work of the power supply circuit is ensured when damaged heat dissipation equipment exists in the plurality of heat dissipation equipment.
Description
Technical Field
The present application relates to the field of electronic circuit technology, and in particular, to a power supply circuit.
Background
When the electronic equipment operates, the heat dissipation equipment is required to dissipate heat of the electronic equipment, so that normal operation of the electronic equipment is guaranteed, and for the electronic equipment with high power, a plurality of heat dissipation equipment are required to dissipate heat of the electronic equipment, so that normal operation of the electronic equipment with high power can be guaranteed.
Because the current that the radiating equipment needs when starting is bigger than the electric current that needs when normal work, when a plurality of radiating equipment and supply circuit direct electrical connection, a plurality of radiating equipment start simultaneously, need supply circuit to provide enough big power to if there is one or more radiating equipment in a plurality of radiating equipment to damage, the short circuit of the radiating equipment that damages produces very big electric current, leads to supply circuit's damage.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide a power supply circuit, which can separately start a plurality of heat dissipation devices for an electronic device having the plurality of heat dissipation devices, so as to reduce power of the power supply circuit, and ensure normal power supply of the power supply circuit when a damaged heat dissipation device exists in the plurality of heat dissipation devices.
In a first aspect, an embodiment of the present application provides a power supply circuit, including: the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit;
the first power supply circuit is used for conditioning an input signal, outputting a direct current signal and sending the direct current signal to the second power supply circuit;
the second power supply circuits are configured to condition the input dc signal according to a start signal of the heat dissipation device, output the conditioned dc signal, and send the conditioned dc signal to the corresponding heat dissipation device, where the conditioned dc signal output by each of the second power supply circuits has different start delays;
and the heat dissipation equipment is used for receiving the conditioned direct current signal and starting the heat dissipation equipment according to the start time delay corresponding to the conditioned direct current signal.
In an embodiment of the present application, the power supply circuit further includes: the switch equipment is respectively connected with the second power supply circuit and the heat dissipation equipment;
the switch device is used for sending a starting signal of the heat dissipation device to the second power supply circuit.
In an embodiment of the present application, the second power supply circuit includes: the linear voltage stabilizer, a first resistor and a first capacitor;
a first port of the linear voltage stabilizer is connected with the switching device, and a second port and a third port of the linear voltage stabilizer are respectively connected with the first power supply circuit;
one end of the first resistor is connected with the switching device, and the other end of the first resistor is connected with a first port of the linear voltage stabilizer;
one end of the first capacitor is connected with a first port of the linear voltage stabilizer, and the other end of the first capacitor is connected with a second port of the linear voltage stabilizer.
In an embodiment of the present application, the second power supply circuit further includes: one end of the first inductor is connected with the fourth port of the linear voltage stabilizer, and the other end of the first inductor is connected with the heat dissipation device.
In an embodiment of the present application, when the signal input by the first power supply circuit is an ac signal, the first power supply circuit includes: and the rectifying circuit is formed by connecting four diodes end to end.
In an embodiment of the present application, when the diodes in the rectifying circuit are a first diode, a second diode, a third diode, and a fourth diode, respectively, the second end of the first diode, the first end of the second diode, the first end of the third diode, and the second end of the fourth diode are connected to the input signal; a first end of the first diode and a first end of the fourth diode are grounded; and the second end of the second diode and the second end of the third diode are connected with the direct current signal.
In an embodiment of the present application, the first power supply circuit further includes: a second capacitor; one end of the second capacitor is connected with the direct current signal, and the other end of the second capacitor is grounded.
In an embodiment of the present application, when the signal input by the first power supply circuit is a dc signal, the first power supply circuit includes: the second resistor, the second inductor and the fifth diode;
one end of the second resistor is connected with one end of the second inductor, the other end of the second resistor is connected with one end of the fifth diode, the other end of the second inductor is connected with the other end of the fifth diode, the input signal is connected with two ends of the fifth diode, and the direct current signals are respectively connected with two ends of the second resistor.
In an embodiment of the application, when the number of the second power supply circuits is greater than one, capacitance values of the first capacitors in each of the second power supply circuits are different.
The embodiment of the application provides a power supply circuit, includes: the heat dissipation device comprises a first power supply circuit, second power supply circuits and heat dissipation devices, wherein the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit; after an input signal is conditioned by the first power supply circuit, outputting a direct current signal, conditioning the input direct current signal by the second power supply circuit according to a starting signal of the heat dissipation equipment, outputting the conditioned direct current signal, and sending the conditioned direct current signal to the corresponding heat dissipation equipment, wherein the conditioned direct current signals output by the second power supply circuits have different starting time delays; and starting the heat dissipation equipment according to the start time delay corresponding to the conditioned direct current signal.
The power supply circuit can separately start a plurality of heat dissipation devices for the electronic equipment with the heat dissipation devices, and avoids the situation that the plurality of heat dissipation devices need to be started simultaneously and the power supply circuit provides enough power, so that the power provided by the power supply circuit is reduced, and when damaged heat dissipation devices exist in the plurality of heat dissipation devices, the situation that the damaged heat dissipation devices are short-circuited to generate too large current and damage to the power supply circuit is caused is prevented.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 illustrates a schematic structural diagram of a power supply circuit provided in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a detailed structure of a part of a power supply circuit provided in an embodiment of the present application;
fig. 3 shows a coordinate diagram of the start-up delay corresponding to the conditioned dc signal;
fig. 4 shows a schematic structural diagram of a first power supply circuit provided in an embodiment of the present application;
fig. 5 shows a schematic structural diagram of another first power supply circuit provided in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. 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 application.
First, an application scenario to which the present application is applicable is described. The method and the device can be applied to a scene of supplying power to the electronic equipment with a plurality of heat dissipation devices.
In the prior art, when a plurality of heat dissipation devices are directly electrically connected to a power supply circuit, if the plurality of heat dissipation devices are started simultaneously, the power supply circuit is required to provide a large enough power supply, and if one or more heat dissipation devices in the plurality of heat dissipation devices are damaged, the damaged heat dissipation devices are short-circuited to generate a large current, which results in damage to the power supply circuit.
The present application provides a power supply circuit, including: the heat dissipation device comprises a first power supply circuit, second power supply circuits and heat dissipation devices, wherein the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit; after an input signal is conditioned by the first power supply circuit, outputting a direct current signal, conditioning the input direct current signal by the second power supply circuit according to a starting signal of the heat dissipation equipment, outputting the conditioned direct current signal, and sending the conditioned direct current signal to the corresponding heat dissipation equipment, wherein the conditioned direct current signals output by the second power supply circuits have different starting time delays; and starting the heat dissipation equipment according to the start time delay corresponding to the conditioned direct current signal.
The power supply circuit can separately start a plurality of heat dissipation devices for the electronic equipment with the heat dissipation devices, and avoids the situation that the plurality of heat dissipation devices need to be started simultaneously and the power supply circuit provides enough power, so that the power provided by the power supply circuit is reduced, and when damaged heat dissipation devices exist in the plurality of heat dissipation devices, the situation that the damaged heat dissipation devices are short-circuited to generate too large current and damage to the power supply circuit is caused is prevented.
For the understanding of the present embodiment, a detailed description will be given of a power supply circuit disclosed in the embodiments of the present application.
Example one
Referring to fig. 1, a schematic structural diagram of a power supply circuit provided in an embodiment of the present application includes: a first power supply circuit 101, a second power supply circuit 102, and a heat sink 103.
The number of the heat sinks 103 is the same as that of the second power supply circuits 102, one heat sink 103 is connected to one second power supply circuit 102, and all the second power supply circuits 102 are connected to the first power supply circuit 101.
Here, fig. 1 shows a schematic configuration diagram of a power supply circuit of one first power supply circuit 101, two second power supply circuits 102, and two heat sinks 103.
The first power supply circuit 101 is configured to condition an input signal, output a dc signal, and send the dc signal to the second power supply circuit 102.
Optionally, the input signal may be an alternating current signal, and the first power supply circuit conditions the input signal to output a direct current signal; the input signal may also be a direct current signal, and the direct current signal is output by conditioning the first power supply circuit, where the specific structure of the first power supply circuit is not limited, and the circuit structure may be adjusted according to an actual application scenario.
The second power supply circuits 102 are configured to condition an input dc signal according to a start signal of the heat dissipation device 103, output the conditioned dc signal, and send the conditioned dc signal to the corresponding heat dissipation device 103, where the conditioned dc signal output by each second power supply circuit 102 has different start delays.
And the heat dissipation device 103 is configured to receive the conditioned direct current signal, and start the heat dissipation device 103 according to a start time delay corresponding to the conditioned direct current signal.
Here, the specific structural composition of the second power supply circuit is described in detail below, and the calculation method of the start-up delay corresponding to the conditioned dc signal is also described in detail below, which is not described herein again.
The power supply circuit further includes: and the switch device is respectively connected with the second power supply circuit 102 and the heat dissipation device 103.
And the switching device is configured to send a start signal of the heat dissipation device 103 to the second power supply circuit 102, where an initial state of the switching device is an off state, and after receiving the start signal of the heat dissipation device 103, the switching device sends the start signal to the second power supply circuit 102.
Fig. 2 is a schematic diagram illustrating a detailed structure of a part of a power supply circuit provided in an embodiment of the present application; the power supply circuit includes: the power supply circuit comprises a first power supply circuit 101, n second power supply circuits 102 and n power supply circuits of heat dissipation equipment 103, wherein n is a positive integer larger than or equal to 1.
After an input signal IN is conditioned by the first power supply circuit 101, a direct current signal U1o is output, the second power supply circuit 102 conditions the input direct current signal U1o according to a starting signal FAN _ CTR of the heat dissipation device, outputs conditioned direct current signals Uo1, Uo2 and … Uon, and sends conditioned direct current signals Uo1, Uo2 and … Uon to the corresponding heat dissipation device 103, wherein the conditioned direct current signals Uo1, Uo2 and … Uon output by the second power supply circuits have different starting time delays; and starting the heat dissipation equipment 103 according to the start time delays corresponding to the conditioned direct current signals Uo1, Uo2 and … Uon.
Wherein each second power supply circuit 102 includes: the linear regulator 1021, the first resistor R1, the first capacitor, and the first capacitors in the n second power supply circuits 102 are represented by Cs1, Cs2, and … Csn, respectively.
When the number of the second power supply circuits 102 is greater than one, the capacitance values of the first capacitors in each of the second power supply circuits 102 are different, i.e., the capacitance values represented by Cs1, Cs2, and … Csn are different.
Here, each capacitance value Cs1, Cs2, … Csn of the first capacitor adjusts the capacitance value according to the preset start-up time delay, and the linear regulator may be one or more of a low quiescent current linear regulator, an ac/dc linear regulator, and the like, and the specific type of the linear regulator is not limited herein.
Because the linear voltage stabilizer is provided with an input control pin, capacitors with different capacities are connected in parallel to the control pin, so that after the second power supply circuit receives a starting signal FAN _ CTR of the heat dissipation device, an input direct current signal U1o is conditioned, conditioned direct current signals Uo1, Uo2 and … Uon are output, and the linear voltage stabilizer has an overcurrent protection function.
Exemplarily, as shown in fig. 3, a coordinate diagram of a start-up delay corresponding to a conditioned dc signal is shown, where a horizontal axis is time, denoted by T, a vertical axis is voltage, denoted by U, FAN _ CTR is a start-up signal of a heat dissipation device, U1o is a dc signal output by a first power supply circuit, Uo is a time when a conditioned dc signal Uo1, Uo2, … Uon is output by a second power supply circuit, and T0 is a time when a voltage of U1o is established; t1 is the starting time of the start signal FAN _ CTR of the heat sink; t2 is the time when the first heat dissipation device receives the conditioned direct current signal, t3 is the time when the second heat dissipation device receives the conditioned direct current signal, the interval time difference between t1 and t2 is the output delay time of Uo2 and Uo1, the interval time difference is calculated according to the capacity difference between capacitors Cs2 and Cs1, and in the same way, tn is the time when the nth heat dissipation device receives the conditioned direct current signal, and the interval time difference between tn and tn-1 is the output delay time of Uon and Uon-1, so that the n heat dissipation devices can be started in a staggered manner.
Since the starting voltage points of the linear voltage regulators are the same, the starting time delay corresponding to the conditioned direct-current signal of each heat sink can be calculated by the time constant τ -RC, for example, the starting time delay corresponding to Uo1 is t1 ═ 3 τ -3 ═ R1 × Cs1, the starting time delay corresponding to Uo2 is t2 ═ 3 τ -R1 ═ Cs2, and the starting time delay corresponding to Uon is tn ═ 3 τ -3R 1 Csn.
A first port of the linear voltage regulator 1021 is connected with the switching device, and a second port and a third port of the linear voltage regulator 1021 are respectively connected with the first power supply circuit 101;
one end of the first resistor R1 is connected to the switching device, and the other end of the first resistor R1 is connected to the first port of the linear regulator 1021;
one end of the first capacitor is connected to the first port of the linear regulator 1021, and the other end of the first capacitor is connected to the second port of the linear regulator 1021.
The second power supply circuit 102 further includes: one end of the first inductor is connected to the fourth port of the linear regulator 1021, the other end of the first inductor is connected to the heat sink 103, and the first inductors in the n second power supply circuits 102 are respectively denoted by L1, L2, and … Ln.
Illustratively, when the heat dissipation device is 3 fans, the rated operating power of each fan is 5.4W, and the starting instantaneous power is 7.2W, if the power supply circuit includes only the first power supply circuit, the 3 fans operate simultaneously, the first power supply circuit needs to provide an output power of 3 × 7.2W ═ 21.6W, if the power supply circuit includes the first power supply circuit and the second power supply circuit, when the starting manner of the three fans is to start the first fan first, then start the second fan, and finally start the third fan, then the first power supply circuit only needs to provide an output power of 5.4W when the first fan is started.
As shown in fig. 4, a schematic structural diagram of a first power supply circuit provided in an embodiment of the present application is shown; when the signal IN input by the first power supply circuit 101 is an ac signal, the first power supply circuit 101 includes: and the rectifying circuit is formed by connecting four diodes end to end.
When the diodes IN the rectifying circuit are the first diode VD1, the second diode VD2, the third diode VD3 and the fourth diode VD4, respectively, the second end of the first diode VD1, the first end of the second diode VD2, the first end of the third diode VD3 and the second end of the fourth diode VD4 are connected to the input signal IN; the first end of the first diode VD1 and the first end of the fourth diode VD4 are grounded; the second end of the second diode VD2 and the second end of the third diode VD3 are connected to the dc signal U1 o.
The first power supply circuit further includes: a second capacitor Cso; one end of the second capacitor Cso is connected to the dc signal U1o, and the other end of the second capacitor Cso is grounded.
As shown in fig. 5, a schematic structural diagram of another first power supply circuit provided in the embodiment of the present application is shown; when the signal IN input by the first power supply circuit 101 is a dc signal, the first power supply circuit 101 includes: the second resistor R2, the second inductor Lo and the fifth diode VD 5;
one end of the second resistor R2 is connected with one end of the second inductor Lo, the other end of the second resistor R2 is connected with one end of the fifth diode VD5, the other end of the second inductor Lo is connected with the other end of the fifth diode VD5, the input signal IN is connected with two ends of the fifth diode VD5, and the direct current signal U1o is respectively connected with two ends of the second resistor R2.
The present embodiment provides a power supply circuit, including: the heat dissipation device comprises a first power supply circuit, second power supply circuits and heat dissipation devices, wherein the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit; after an input signal is conditioned by the first power supply circuit, outputting a direct current signal, conditioning the input direct current signal by the second power supply circuit according to a starting signal of the heat dissipation equipment, outputting the conditioned direct current signal, and sending the conditioned direct current signal to the corresponding heat dissipation equipment, wherein the conditioned direct current signals output by the second power supply circuits have different starting time delays; and starting the heat dissipation equipment according to the start time delay corresponding to the conditioned direct current signal.
The power supply circuit can separately start a plurality of heat dissipation devices for the electronic equipment with the heat dissipation devices, and avoids the situation that the plurality of heat dissipation devices need to be started simultaneously and the power supply circuit provides enough power, so that the power provided by the power supply circuit is reduced, and when damaged heat dissipation devices exist in the plurality of heat dissipation devices, the situation that the damaged heat dissipation devices are short-circuited to generate too large current and damage to the power supply circuit is caused is prevented.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A power supply circuit, comprising: the number of the heat dissipation devices is the same as that of the second power supply circuits, one heat dissipation device is connected with one second power supply circuit, and all the second power supply circuits are connected with the first power supply circuit;
the first power supply circuit is used for conditioning an input signal, outputting a direct current signal and sending the direct current signal to the second power supply circuit;
the second power supply circuits are configured to condition the input dc signal according to a start signal of the heat dissipation device, output the conditioned dc signal, and send the conditioned dc signal to the corresponding heat dissipation device, where the conditioned dc signal output by each of the second power supply circuits has different start delays;
and the heat dissipation equipment is used for receiving the conditioned direct current signal and starting the heat dissipation equipment according to the start time delay corresponding to the conditioned direct current signal.
2. The power supply circuit of claim 1, further comprising: the switch equipment is respectively connected with the second power supply circuit and the heat dissipation equipment;
the switch device is used for sending a starting signal of the heat dissipation device to the second power supply circuit.
3. The power supply circuit of claim 2, wherein the second power supply circuit comprises: the linear voltage stabilizer, a first resistor and a first capacitor;
a first port of the linear voltage stabilizer is connected with the switching device, and a second port and a third port of the linear voltage stabilizer are respectively connected with the first power supply circuit;
one end of the first resistor is connected with the switching device, and the other end of the first resistor is connected with a first port of the linear voltage stabilizer;
one end of the first capacitor is connected with a first port of the linear voltage stabilizer, and the other end of the first capacitor is connected with a second port of the linear voltage stabilizer.
4. The power supply circuit of claim 3, wherein the second power supply circuit further comprises: one end of the first inductor is connected with the fourth port of the linear voltage stabilizer, and the other end of the first inductor is connected with the heat dissipation device.
5. The power supply circuit of claim 4, wherein when the signal input by the first power supply circuit is an alternating current signal, the first power supply circuit comprises: and the rectifying circuit is formed by connecting four diodes end to end.
6. The power supply circuit according to claim 5, wherein when the diodes in the rectifying circuit are a first diode, a second diode, a third diode, and a fourth diode, respectively, the second terminal of the first diode, the first terminal of the second diode, the first terminal of the third diode, and the second terminal of the fourth diode are connected to the input signal; a first end of the first diode and a first end of the fourth diode are grounded; and the second end of the second diode and the second end of the third diode are connected with the direct current signal.
7. The power supply circuit of claim 5, wherein the first power supply circuit further comprises: a second capacitor; one end of the second capacitor is connected with the direct current signal, and the other end of the second capacitor is grounded.
8. The power supply circuit of claim 4, wherein when the signal input by the first power supply circuit is a dc signal, the first power supply circuit comprises: the second resistor, the second inductor and the fifth diode;
one end of the second resistor is connected with one end of the second inductor, the other end of the second resistor is connected with one end of the fifth diode, the other end of the second inductor is connected with the other end of the fifth diode, the input signal is connected with two ends of the fifth diode, and the direct current signals are respectively connected with two ends of the second resistor.
9. The power supply circuit according to claim 3, wherein when the number of the second power supply circuits is greater than one, the capacitance values of the first capacitors in each of the second power supply circuits are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302864.3U CN210041683U (en) | 2019-08-12 | 2019-08-12 | Power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302864.3U CN210041683U (en) | 2019-08-12 | 2019-08-12 | Power supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210041683U true CN210041683U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921302864.3U Active CN210041683U (en) | 2019-08-12 | 2019-08-12 | Power supply circuit |
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| CN (1) | CN210041683U (en) |
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- 2019-08-12 CN CN201921302864.3U patent/CN210041683U/en active Active
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