CN112531674A - Direct current power supply parallel power supply system and electronic product - Google Patents
Direct current power supply parallel power supply system and electronic product Download PDFInfo
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- CN112531674A CN112531674A CN202011422352.8A CN202011422352A CN112531674A CN 112531674 A CN112531674 A CN 112531674A CN 202011422352 A CN202011422352 A CN 202011422352A CN 112531674 A CN112531674 A CN 112531674A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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Abstract
The application discloses direct current power supply parallel power supply system and electronic product, including power, switch and controlling means. Because the power number is n, wherein n is the integer that is greater than 1, simultaneously, the power is parallelly connected and is connected with the load, the load front end is equipped with the switch, this switch passes through controlling means control its break-make, consequently when certain power breaks down, controlling means controls the switch disconnection of this power, guarantee that other powers are not influenced by the power that breaks down, still can supply power to the load, consequently even the power breaks down, electronic product can not shut down or burn out mainboard, components and parts, this normal operating that will be favorable to electronic product more, the life of extension electronic product. In addition, the electronic product provided by the application comprises the direct-current power supply parallel power supply system, and the effect is the same as that of the direct-current power supply parallel power supply system.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a dc power supply parallel power supply system and an electronic product.
Background
With the development of science and technology, electronic products are more and more deeply inserted into the lives of common people. As the core of electronic products, power supplies, especially DC-DC power supplies, are the key to supporting the electronic products and the operation of their systems.
In the prior art, a DC-DC power supply and a load supply power in a one-to-one manner, if the power supply fails and the load stops supplying power, the operation of the whole system is influenced, so that an electronic product is down; if the power supply has serious short-circuit fault, the mainboard or components of the electronic product can be burnt out.
Disclosure of Invention
The invention aims to provide a direct current power supply parallel power supply system which is used for supplying power to a load through a plurality of parallel power supplies, so that other power supplies can continue to supply power to the load when the power supplies fail. In addition, the purpose of this application is still to provide an electronic product.
In order to solve the technical problem, the application provides a direct-current power supply parallel power supply system which comprises power supplies, switches and a control device, wherein the number of the power supplies is n, n is a positive integer larger than 1, the power supplies are connected in parallel to be connected with a load, the front end of the load is provided with the switches, the switches correspond to the power supplies one to one, and the control device is connected with the switches and used for controlling the on-off of the corresponding switches according to the output state of the power supplies.
Preferably, the number of the power supplies is specifically 2.
Preferably, the switch is a switch tube.
Preferably, one of the switches includes 2 switch tubes, which are respectively disposed at the input end of the power supply and the output end of the power supply.
Preferably, the power supply further comprises an expander, and the control device is further configured to output a signal to the expander according to the output state of the power supply.
Preferably, the extender is further connected with a BMC, and the BMC is configured to read a target signal on the extender and generate a corresponding reminder signal according to the target signal.
Preferably, the control device is further connected with a BMC, and the BMC is configured to read output information of the power supply.
In order to solve the above technical problem, the present application further provides an electronic product, which is characterized by including the dc power supply parallel power supply system.
The application provides a direct current power supply system that connects in parallel, including power, switch and controlling means. Because the power number is n, wherein n is the integer that is greater than 1, simultaneously, the power is parallelly connected and is connected with the load, the load front end is equipped with the switch, this switch passes through controlling means control its break-make, consequently when certain power breaks down, controlling means controls the switch disconnection of this power, guarantee that other powers are not influenced by the power that breaks down, still can supply power to the load, consequently even the power breaks down, electronic product can not shut down or burn out mainboard, components and parts, this normal operating that will be favorable to electronic product more, the life of extension electronic product.
In addition, the electronic product provided by the application comprises the direct-current power supply parallel power supply system, and the effect is the same as that of the direct-current power supply parallel power supply system.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a device structure diagram of a dc power supply parallel power supply system according to an embodiment of the present disclosure;
fig. 2 is a structural diagram of a dc power supply parallel power supply system according to an embodiment of the present disclosure;
fig. 3 is a structural diagram of another dc power supply parallel power supply system provided in the embodiment of the present application;
the reference numbers are as follows:
10 is an input terminal, 11 is a power supply, 12 is a switch, 13 is a control device, 14 is a first DC/DC power supply, 15 is a first switch tube, 16 is a first control device, 17 is a second DC/DC power supply, 18 is a second switch tube, 19 is a second control device, and 20 is a load.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a direct current power supply parallel power supply system and an electronic product.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
The direct-current power supply parallel power supply system shown in fig. 1 includes power supplies 11, switches 12 and a control device 13, where the number of the power supplies 11 is n, n is a positive integer greater than 1, the n power supplies 11 are connected in parallel to be connected with a load 20, the switches 12 are arranged at the front end of the load 20, the switches 12 correspond to the power supplies 11 one by one, and the control device 13 is connected with each switch 12 and is configured to control on/off of the corresponding switch according to an output state of the power supplies.
The following is specifically described in conjunction with the operating conditions:
working state 1: during normal power supply, all the parallel power supplies 11 operate normally, and the control device 13 controls all the switches 12 to be closed, so that all the power supplies 11 output voltages at the same time.
And 2, working state: when a fault occurs in one of the power sources 11, the control device 13 controls the switch 12 corresponding to the power source 11 to be turned off, and the power source stops supplying power to the load 20, and the other power sources continue to operate normally.
It should be noted that the number of the power supplies 11 connected in parallel is not limited, and only when some or some of the power supplies 11 fail, other power supplies 11 may work normally to continue to supply power to the load 20. The number of the control devices 13 is not limited, and only the pins thereof can be connected to all the switches 12.
It should be noted that the fault types include an input capacitor short circuit, a chip internal short circuit, and an output capacitor short circuit, but the fault types are not only the three cases. Because when a certain power input is broken or output is broken, other power supplies can normally work, so the direct-current power supply parallel power supply system mainly detects short circuit and circuit protection, and when a certain power input is short circuit or output is short circuit, the fault circuit is isolated through the disconnection of the switch, and the normal output of other power supplies is ensured.
The application provides a direct current power supply system that connects in parallel, including power, switch and controlling means. Because the power number is n, wherein n is the integer that is greater than 1, simultaneously, the power is parallelly connected and is connected with the load, the load front end is equipped with the switch, this switch passes through controlling means control its break-make, consequently when certain power breaks down, controlling means controls the switch disconnection of this power, guarantee that other powers are not influenced by the power that breaks down, still can supply power to the load, consequently even the power breaks down, electronic product can not shut down or burn out mainboard, components and parts, this normal operating that will be favorable to electronic product more, the life of extension electronic product.
As shown in fig. 1, on the basis of the above embodiment, in a specific implementation, the number of the power supplies 11 is specifically 2, and the power supplies are respectively a first DC/DC power supply 14 and a second DC/DC power supply 17, where the first DC/DC power supply 14 corresponds to the first control device 16, and the second DC/DC power supply 17 corresponds to the second control device 19, and in a specific implementation, the first DC/DC power supply 14 corresponds to the first switch tube 15, and the second DC/DC power supply 17 corresponds to the second switch tube 18. It should be noted that the control device 11 includes a first control device 16 and a second control device 19, and the switch 12 includes a first switch tube 15 and a second switch tube 18, which are described in detail below with reference to the operating states:
working state 1: when the power is supplied normally, the first DC/DC power supply 14 and the second DC/DC power supply 17 all work normally, and the first control device 16 and the second control device 19 control the first switching tube 15 and the second switching tube 18 to be closed respectively, so that the first DC/DC power supply 14 and the second DC/DC power supply 17 output voltages at the same time.
And 2, working state: if a fault occurs in the first DC/DC power supply 14, the first control device 16 controls the first switching tube 15 to be turned off, the first DC/DC power supply 14 stops supplying power to the load 20, the second DC/DC power supply 17 continues to operate normally, and only the second DC/DC power supply 17 outputs voltage.
And 3, working state: if a fault occurs in the second DC/DC power supply 17, the second control device 19 controls the second switching tube 18 to be turned off, the second DC/DC power supply 17 stops supplying power to the load 20, the first DC/DC power supply 14 continues to operate normally, and only the first DC/DC power supply 14 outputs voltage at this time.
It should be noted that the number of the control devices 11 is not limited, and only the pins thereof can be connected to all the switch tubes. In this embodiment, it is only preferable that the first DC/DC power supply 14 corresponds to the first control device 16 or the second DC/DC power supply 17 corresponds to the second control device 19, and in a specific implementation, the method is adapted to a current chip. In addition, the switch 12 is not limited specifically, and only the output of the power supply of the loop where the switch 12 is located needs to be cut off, and in specific implementation, the switch 12 may use a switch tube, and further, a switch tube with small on-resistance and small power loss, such as a MOS tube, especially an NMOS tube, may be selected.
The utility model provides a direct current power supply parallel power supply system, parallelly connected power is 2, and when one of them power broke down, another power can also continue to work, therefore electronic product can not shut down or burn out mainboard, components and parts, is favorable to electronic product's normal operating, prolongs electronic product's life. Meanwhile, compared with the parallel connection of a plurality of power supplies, the embodiment can reduce the proportion of the power supply occupying the chip, so that the electronic product is lighter and more convenient, and the reliability of the product is greatly improved although the cost is slightly improved.
As shown in fig. 2, in the above embodiment, the input terminal of the first DC/DC power supply 14 and the output terminal of the first DC/DC power supply 14 are respectively provided with the first switch tube 15, and the input terminal of the second DC/DC power supply 17 and the output terminal of the second DC/DC power supply 17 are also respectively provided with the second switch tube 18. The following is specifically described in conjunction with the operating conditions:
working state 1: when the power is supplied normally, the first DC/DC power supply 14 and the second DC/DC power supply 17 all work normally, the first control device 16 controls the two first switching tubes 15 to be closed, and the second control device 19 controls the two second switching tubes 18 to be closed, so that the first DC/DC power supply 14 and the second DC/DC power supply 17 output voltages at the same time.
And 2, working state: if the first DC/DC power supply 14 has a fault, if the input terminal has a fault, the first control device 16 controls the first switching tube 15 at the input terminal to be turned off, and if the output terminal has a fault, the first control device 16 controls the first switching tube 15 at the output terminal to be turned off, so that the first DC/DC power supply 14 stops supplying power to the load 20, the second DC/DC power supply 17 continues to operate normally, and only the second DC/DC power supply 17 outputs voltage.
And 3, working state: if the second DC/DC power supply 17 has a fault, the second control device 19 controls the input end second switch tube 18 to be turned off if the input end has a fault, and if the output end has a fault, the second control device 19 controls the output end second switch tube 18 to be turned off, so that the first DC/DC power supply 14 stops supplying power to the load 20, the first DC/DC power supply 14 continues to normally operate, and only the first DC/DC power supply 14 outputs voltage at this time.
It should be additionally noted that in an implementation, the switch 12 may use a switch tube, and further, a switch tube with small on-resistance and small power loss may be selected, such as a MOS tube, and especially an NMOS tube.
According to the direct-current power supply parallel power supply system, when one power supply fails, other power supplies can still work, so that an electronic product cannot be shut down or a main board and components are burnt out, normal operation of the electronic product is facilitated, and the service life of the electronic product is prolonged. Meanwhile, the input end of the power supply and the output end of the power supply are respectively provided with a switch, so that when the input end of the power supply breaks down, the fault circuit at the input end can be completely cut off through the switch at the input end, and when the output end of the power supply breaks down, the fault circuit at the output end can be completely cut off through the switch at the output end, so that the connection between the two power supplies can be cut off, and the independent work of the power supplies is ensured without mutual interference.
As shown in fig. 3, on the basis of the above embodiment, an expander 21 is further included, and the first control device 16 and the second control device 19 are further configured to output signals to the expander 21 in a high-low level manner according to the output state of the corresponding power supply. The following is specifically described in conjunction with the operating conditions:
working state 1: when the power is supplied normally, the first DC/DC power supply 14 and the second DC/DC power supply 17 operate simultaneously and no fault occurs, and fault pins of the first control device 16 and the second control device 19 output a high level to the expander 21.
And 2, working state: if a fault occurs in the first DC/DC power supply 14, the first control device 16 controls the two first switching tubes 15 to be turned off, and at the same time, the fault pin of the first control device 16 outputs a low level to the expander 21.
And 3, working state: if a fault occurs in the second DC/DC power supply 17, the second control device 19 controls the two second switching tubes 18 to be turned off, and at the same time, the fault pin of the second control device 19 outputs a low level to the expander 21.
It should be noted that, in an implementation, the extender 21 may be a PCA9554 extender.
The application provides a direct current power supply parallel power supply system, still includes the expander, and the high-low level signal of controlling means output is received to this expander, and wherein, the low level represents this power failure, and the high level represents this power normal work, consequently when the power failure, can in time receive the low level signal, makes things convenient for maintainer in time to perceive.
On the basis of the above embodiment, the extender 21 is further connected to a Baseboard Management Controller (BMC) through an IIC bus, and the BMC is configured to read a level signal on the extender 21, and if a low level signal is detected, an early warning is given to prompt maintenance personnel to maintain.
It should be additionally noted that the early warning signal is not specifically limited, and may be adapted to the current electronic product, such as a light-on reminder, a voice reminder, and the like.
The utility model provides a DC power supply system that connects in parallel, the expander is connected with BMC, and BMC is through reading the level signal of expander, in time knows the power and whether breaks down, if read low level signal, represents the power and breaks down, then early warning suggestion maintainer maintains, consequently when the power breaks down, can in time read the low level signal when breaking down, makes things convenient for maintainer to in time maintain.
As shown in fig. 3, on the basis of the above embodiment, the first control device 16 and the second control device 19 are further connected to the BMC through the IIC bus, and the BMC is used for reading the output information of the first DC/DC power supply 14 and the second DC/DC power supply 17 on the first control device 16 and the second control device 19.
It should be noted that the output information is not specifically required, and can reflect the current working states of the first DC/DC power supply 14 and the second DC/DC power supply 17, such as current, voltage, power, and the like.
The application provides a direct current power supply parallel power supply system, controlling means is connected with BMC, and BMC reads the last output information about the power of controlling means, can let maintainer know the current running state of power in daily patrolling and examining, judges whether the power needs to be changed, and this will be favorable to electronic product's permanent operation.
Finally, the application also provides an electronic product which comprises a direct current power supply parallel power supply system.
Since this embodiment corresponds to the above embodiment of the apparatus portion, please refer to the description of the above embodiment of the apparatus portion, which will not be repeated herein.
It should be noted that the electronic product mentioned in the present application may be a portable device or a non-portable device, such as a desktop computer, a tablet computer, a mobile phone, a wireless headset, etc.
The application provides an electronic product, including direct current power supply parallel power supply system, this direct current power supply parallel power supply system includes a plurality of powers, switch and controlling means. Because the power is parallelly connected and is connected with the load, the load front end is equipped with the switch, and this switch passes through controlling means control its break-make, consequently when certain power breaks down, controlling means control the switch disconnection of this power, guarantees that other power do not receive the power that breaks down and influence, still can supply power to the load, even consequently the power breaks down, and electronic product can not shut down or burn out mainboard, components and parts, and this will be favorable to electronic product's normal operating more, the life of extension electronic product.
The dc power supply parallel power supply system and the electronic product provided by the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. The direct-current power supply parallel power supply system comprises power supplies and is characterized by further comprising switches and a control device, wherein the number of the power supplies is n, n is a positive integer larger than 1, the power supplies are connected in parallel to be connected with a load, the switches are arranged at the front end of the load and correspond to the power supplies one to one, and the control device is connected with the switches and used for controlling the on-off of the corresponding switches according to the output state of the power supplies.
2. The direct-current power supply parallel power supply system according to claim 1, wherein the number of the power supplies is specifically 2.
3. The direct-current power supply parallel power supply system according to claim 1, wherein the switch is a switching tube.
4. The dc power supply parallel power supply system according to claim 3, wherein one of the switches comprises 2 of the switch tubes, which are respectively disposed at an input end of the power supply and an output end of the power supply.
5. The dc power supply parallel power supply system according to claim 1, further comprising an expander, wherein the control device is further configured to output a signal to the expander according to an output state of the power supply.
6. The DC power supply parallel power supply system according to claim 5, wherein the extender is further connected to a BMC, and the BMC is configured to read a target signal on the extender and generate a corresponding alert signal according to the target signal.
7. The DC power supply parallel power supply system according to any one of claims 1 to 5, wherein the control device is further connected to a BMC for reading output information of the power supply.
8. An electronic product, characterized by comprising the direct current power supply parallel power supply system according to claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011422352.8A CN112531674A (en) | 2020-12-08 | 2020-12-08 | Direct current power supply parallel power supply system and electronic product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011422352.8A CN112531674A (en) | 2020-12-08 | 2020-12-08 | Direct current power supply parallel power supply system and electronic product |
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| US20080046707A1 (en) * | 2006-08-15 | 2008-02-21 | Tyan Computer Corporation | Remote Monitor Module For Power Initialization Of Computer System |
| CN202218041U (en) * | 2011-09-02 | 2012-05-09 | 北京工业大学 | Dual-redundancy aero power supply |
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