CN204741268U - Power circuit protection system - Google Patents
Power circuit protection system Download PDFInfo
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- CN204741268U CN204741268U CN201520509103.0U CN201520509103U CN204741268U CN 204741268 U CN204741268 U CN 204741268U CN 201520509103 U CN201520509103 U CN 201520509103U CN 204741268 U CN204741268 U CN 204741268U
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- 238000004146 energy storage Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 55
- 239000004065 semiconductor Substances 0.000 claims description 38
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 2
- 101100102627 Oscarella pearsei VIN1 gene Proteins 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The utility model provides a power circuit protection system includes: energy storage device, power circuit and protection circuit, energy storage device is connected with the input of protection circuit, and the output of protection circuit is connected with the electric capacity among the power circuit, and the control end of protection circuit is connected with the control end among the power circuit, wherein, the protection circuit includes MOS pipe and resistance, MOS pipe is connected with resistor parallel with, and the source electrode of MOS pipe is connected with the both ends point that drains respectively with resistance. Because MOS pipe and resistor parallel with for the branch road at resistance place switches on during the switch -on, and the branch road at MOS pipe place is in off -state, when electronic circuit reaches predetermined condition, and control the MOS piping leads to for the electric current is the branch road at process resistance place no longer, and the pressure drop and the energy loss of the branch road at MOS pipe place are very little, do not have pressure drop and energy loss in other words, have solved the problem that the protection circuit consumed the energy loss of pressure drop among the prior art.
Description
Technical field
The application relates to circuit field, particularly a kind of power circuit protection system.
Background technology
Along with the development of technology, people are more and more higher to the requirement of protective circuit in power circuit.
Usually start-up surge protection circuit can be connected at the power port of electronic circuit in prior art; to protect electronic equipment; resistance value in existing protective circuit is generally between 500 ohm to 1000 ohm; like this; even if the electric current required for load end is only 10mA; protective circuit also has the pressure drop of more than 5V, and protective circuit exists energy loss always.
Therefore, how to effectively reduce the pressure drop in protective circuit and energy loss, make protective circuit to exist hardly pressure drop and energy loss is the current technical issues that need to address of those skilled in the art.
Utility model content
Technical problems to be solved in this application are to provide a kind of power circuit protection system, solve the pressure drop in prior art, protective circuit also having more than 5V, and protective circuit exists the problem of energy loss always.
Its concrete scheme is as follows:
A kind of power circuit protection system, this system comprises:
Energy-storage travelling wave tube, power circuit and protective circuit;
Described energy-storage travelling wave tube is connected with the input of described protective circuit, and the output of described protective circuit is connected with the electric capacity in power circuit, and the control end of protective circuit is connected with the control end in power circuit;
Wherein, described protective circuit comprises metal-oxide-semiconductor and resistance; Described metal-oxide-semiconductor is connected with described resistor coupled in parallel, and the source electrode of described metal-oxide-semiconductor is connected with the two-end-point of described resistance respectively with drain electrode.
Above-mentioned protection system, optionally, described protective circuit also comprises:
Voltage stabilizing didoe, described voltage stabilizing didoe and described metal-oxide-semiconductor are connected in parallel, and the positive pole of described voltage stabilizing didoe connects the source electrode of described metal-oxide-semiconductor, and the negative pole of described voltage stabilizing didoe connects the drain electrode of described metal-oxide-semiconductor.
Above-mentioned protection system, optionally, the number of described protective circuit is one or more.
Above-mentioned protection system; optionally; when the number of described protective circuit is multiple; multiple described protective circuit is connected in parallel; the input of each described protective circuit is all connected with described energy-storage travelling wave tube, and the output of each described protective circuit is connected with the electric capacity matched with described protective circuit in power circuit respectively.
Above-mentioned protection system, optionally, described energy-storage travelling wave tube comprises: battery.
Above-mentioned protection system, optionally, described energy-storage travelling wave tube comprises: battery pack.
Above-mentioned protection system, optionally, described energy-storage travelling wave tube comprises: super capacitor.
In a kind of power circuit protection system that the application provides, comprising: energy-storage travelling wave tube, power circuit and protective circuit; Described energy-storage travelling wave tube is connected with the input of described protective circuit, and the output of described protective circuit is connected with the electric capacity in power circuit, and the control end of protective circuit is connected with the control end in power circuit; Wherein, described protective circuit comprises metal-oxide-semiconductor and resistance; Described metal-oxide-semiconductor is connected with described resistor coupled in parallel, and the source electrode of described metal-oxide-semiconductor is connected with the two-end-point of described resistance respectively with drain electrode.When described protective circuit is applied in electronic circuit; due to metal-oxide-semiconductor and resistor coupled in parallel; the branch road conducting at resistance place when making to connect; and the branch road at metal-oxide-semiconductor place is in cut-off state; when electronic circuit reaches default condition; control described metal-oxide-semiconductor conducting; but the resistance value of metal-oxide-semiconductor is very little; make electric current no longer through the branch road at resistance place; like this; the pressure drop of the branch road at metal-oxide-semiconductor place and energy loss are very little, are almost equivalent to there is not pressure drop and energy loss, solve protective circuit in prior art and consume the problem of the energy loss of pressure drop.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of power circuit protection system embodiment of the application;
Fig. 2 is the structural representation of a kind of another embodiment of power circuit protection system of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
With reference to figure 1, show the structural representation of a kind of power circuit protection system of the application embodiment, can comprise:
Energy-storage travelling wave tube, power circuit and protective circuit.
Described energy-storage travelling wave tube is connected with the input of described protective circuit, the output of described protective circuit is connected with the electric capacity in power circuit, the control end of protective circuit is connected with the control end in power circuit, and wherein said protective circuit comprises metal-oxide-semiconductor and resistance; Described metal-oxide-semiconductor is connected with described resistor coupled in parallel, and the source electrode of described metal-oxide-semiconductor is connected with the two-end-point of described resistance respectively with drain electrode.
In the application, when described protective circuit is applied in electronic circuit, due to metal-oxide-semiconductor and resistor coupled in parallel, the branch road conducting at resistance place when making to connect, and the branch road at metal-oxide-semiconductor place is in cut-off state, when electronic circuit reaches default condition, control described metal-oxide-semiconductor conducting, but the resistance value of metal-oxide-semiconductor is very little, make electric current no longer through the branch road at resistance place, like this, the pressure drop of the branch road at metal-oxide-semiconductor place and energy loss are very little, almost be equivalent to there is not pressure drop and energy loss, solve protective circuit in prior art and consume the problem of the energy loss of pressure drop.
Protective circuit in the application, optionally, also comprises:
Voltage stabilizing didoe, described voltage stabilizing didoe and described metal-oxide-semiconductor are connected in parallel, and the positive pole of described voltage stabilizing didoe connects the source electrode of described metal-oxide-semiconductor, and the negative pole of described voltage stabilizing didoe connects the drain electrode of described metal-oxide-semiconductor.
Resistance value in the application in protective circuit can adopt 10 ohm to 1000 ohm usually.
In figure, Q1 and R1 is anti-surge protection circuit, and C1 is the bulky capacitor of power circuit inside, and CON1 is the control signal of metal-oxide-semiconductor, and POW1 is power line.At VIN1 powered on moment, metal-oxide-semiconductor is in cut-off state, now charged to electric capacity C1 with small area analysis by resistance R1, the voltage of POW1 slowly rises, testing circuit now in power circuit continues to monitor the pressure reduction between POW1 and POW1-, when 2 pressure reduction are less than Vg (value of Vg is relevant with the value of the electric current in side circuit and R1), exports a control signal by the metal-oxide-semiconductor Q1 conducting of correspondence, now electric current directly flows to power circuit by metal-oxide-semiconductor, no longer through resistance R1.When after metal-oxide-semiconductor conducting, when power circuit enters stable operating state, there is pressure drop hardly in protective circuit.
Protection system in the application, optionally, the number of described protective circuit is one or more.
Protection system in the application; optionally; when the number of described protective circuit is multiple; as shown in Figure 2; multiple described protective circuit is connected in parallel; the input of each described protective circuit is all connected with described energy-storage travelling wave tube, and the output of each described protective circuit is connected with the electric capacity matched with described protective circuit in power circuit respectively.
This anti-surge protection circuit also can expand to multichannel, realizes the protection of multichannel electronic circuit.Now, because each road exists the problem of the sequencing that powers on, situation can be more severe, more needs anti-surge protection circuit to protect the electronic devices and components in power circuit.
Protection system in the application, optionally, described energy-storage travelling wave tube comprises: battery, battery pack or super capacitor.
The application adopts metal-oxide-semiconductor and resistance jointly to form anti-surge circuit, capacitor charging is given lentamente by resistance when powering on, by the time when the pressure reduction at resistance two ends narrows down to below Vg, control chip opens corresponding metal-oxide-semiconductor, reduces pressure drop when circuit normally works and energy loss.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add required general hardware platform by software and realizes.Based on such understanding, the technical scheme of the application can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the application or embodiment.
Above a kind of power circuit protection system that the application provides is described in detail, apply specific case herein to set forth the principle of the application and execution mode, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (7)
1. a power circuit protection system, is characterized in that, this system comprises:
Energy-storage travelling wave tube, power circuit and protective circuit;
Described energy-storage travelling wave tube is connected with the input of described protective circuit, and the output of described protective circuit is connected with the electric capacity in power circuit, and the control end of protective circuit is connected with the control end in power circuit;
Wherein, described protective circuit comprises metal-oxide-semiconductor and resistance; Described metal-oxide-semiconductor is connected with described resistor coupled in parallel, and the source electrode of described metal-oxide-semiconductor is connected with the two-end-point of described resistance respectively with drain electrode.
2. protection system according to claim 1, is characterized in that, described protective circuit also comprises:
Voltage stabilizing didoe, described voltage stabilizing didoe and described metal-oxide-semiconductor are connected in parallel, and the positive pole of described voltage stabilizing didoe connects the source electrode of described metal-oxide-semiconductor, and the negative pole of described voltage stabilizing didoe connects the drain electrode of described metal-oxide-semiconductor.
3. protection system according to claim 1, is characterized in that, the number of described protective circuit is one or more.
4. protection system according to claim 3; it is characterized in that; when the number of described protective circuit is multiple; multiple described protective circuit is connected in parallel; the input of each described protective circuit is all connected with described energy-storage travelling wave tube, and the output of each described protective circuit is connected with the electric capacity matched with described protective circuit in power circuit respectively.
5. protection system according to claim 1, is characterized in that, described energy-storage travelling wave tube comprises: battery.
6. protection system according to claim 1, is characterized in that, described energy-storage travelling wave tube comprises: battery pack.
7. protection system according to claim 1, is characterized in that, described energy-storage travelling wave tube comprises: super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509103.0U CN204741268U (en) | 2015-07-14 | 2015-07-14 | Power circuit protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509103.0U CN204741268U (en) | 2015-07-14 | 2015-07-14 | Power circuit protection system |
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| Publication Number | Publication Date |
|---|---|
| CN204741268U true CN204741268U (en) | 2015-11-04 |
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| CN201520509103.0U Active CN204741268U (en) | 2015-07-14 | 2015-07-14 | Power circuit protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934952A (en) * | 2015-07-14 | 2015-09-23 | 国家电网公司 | Power circuit protection system |
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2015
- 2015-07-14 CN CN201520509103.0U patent/CN204741268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934952A (en) * | 2015-07-14 | 2015-09-23 | 国家电网公司 | Power circuit protection system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shen Baoxing Inventor after: Chen Panxia Inventor after: Zhao Huanwei Inventor after: Mao Jianwei Inventor after: Li Liang Inventor after: Li Bo Inventor after: Zhang Fan Inventor after: Zheng Zhengxian Inventor after: Zhu Jinwei Inventor after: Su Fang Inventor after: Zhou Bin Inventor before: Zhang Fan Inventor before: Zheng Zhengxian Inventor before: Zhu Jinwei Inventor before: Su Fang Inventor before: Zhou Bin Inventor before: Chen Panxia Inventor before: Zhao Huanwei |
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| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160223 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: ELECTRIC AUTOMOBILE SERVICE BRANCH, STATE GRID ZHEJIANG ELECTRIC POWER COMPANY Patentee after: Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Company Patentee after: Hangzhou Dayou Technology Development Co., Ltd. Patentee after: Hangzhou Bmser Technology Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Company Patentee before: Hangzhou Dayou Technology Development Co., Ltd. Patentee before: Hangzhou Bmser Technology Co., Ltd. |