CN205231840U - Two switching of power devices of DC5V based on super capacitor back -up source - Google Patents
Two switching of power devices of DC5V based on super capacitor back -up source Download PDFInfo
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- CN205231840U CN205231840U CN201520966412.0U CN201520966412U CN205231840U CN 205231840 U CN205231840 U CN 205231840U CN 201520966412 U CN201520966412 U CN 201520966412U CN 205231840 U CN205231840 U CN 205231840U
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Abstract
The utility model discloses a two switching of power devices of DC5V based on super capacitor back -up source, back -up source super capacitor module capacity is 150F, voltage is DC5.4V, super capacitor charging current is 0.2A, and super capacitor floating charge voltage is DC5.2V, the super capacitor discharge voltage scope is DC1.8V -DC5.2V, possess super capacitor charge -discharge management function, super capacitor self -checking function, report an emergency and ask for help or increased vigilance the function, the seamless handover output that can realize the super capacitor back -up source and input the DC5V power. Compare current power distribution terminal DC24V or DC48V super capacitor management system, possess that super capacitor monomer number is few, small, with low costs, energy utilization is high and duration advantage such as strong, it is very practical in the distribution equipment CPU DC5V mains operated of system.
Description
Technical field
The utility model relates to distribution terminal application of power field, particularly a kind of DC5V double-power supply switching device based on super capacitor back-up source.
Background technology
Ultracapacitor has been widely used in 10kV distribution terminal power-supply system, as the back-up source of distribution terminal, compares battery power supply in support, has good temp characteristic, long service life and the advantage such as non-maintaining.Current controller switching equipment mainly adopts DC24V, DC48V main power source system, cpu system DC5V power supply then carries out DC/DC conversion by DC24V or DC48V main power source, super capacitor then supports the use with main power source system DC24V or DC48V, realizes management of charging and discharging and the electrical source exchange of super capacitor.But this method has following shortcoming:
(1) this kind of method super capacitor series connection number is more, and super capacitor monomer voltage is that 2.7V, DC24V power-supply system generally needs series connection 10 super capacitors, and DC48V super capacitor then needs series connection 20 super capacitors, and electric capacity volume is comparatively large, and cost is higher.
(2) DC24/DC5V or DC48V/DC5V module efficiency is generally about 80%, the power loss of super capacitor is larger, in addition, the general input range of DC24V/DC5V or DC48V/DC5V power module is 2:1 or 4:1, super capacitor periods of low pressure has very most of energy can not use completely, and super capacitor needs the long period of charging, back-up source could be met and use voltage range requirement.
(3) DC24V or DC48V super capacitor charge and discharge administration module is higher because of voltage, and design comparatively complicated, modular design cost is also higher.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of DC5V double-power supply switching device based on super capacitor back-up source, and it possesses, and super capacitor monomer number is few, volume is little, cost is low, capacity usage ratio is high and flying power is strong.
The utility model solves the technical scheme that its technical problem adopts:
Based on the DC5V double-power supply switching device of super capacitor back-up source, comprise the super capacitor charge management circuit, super capacitor module, super capacitor discharging management circuit and the DC5V main secondary power switching circuit that connect successively, described super capacitor charge management circuit input is connected with DC5V power supply, and output is connected with cpu system DC5V power supply.
As the improvement of technique scheme, also comprise super capacitor self-checking circuit and control warning circuit, described super capacitor self-checking circuit output is respectively with super capacitor charge management circuit with control acknowledge circuit and be connected, and described super capacitor self-checking circuit input is connected with super capacitor module.
As the improvement of technique scheme, described super capacitor charge management circuit comprises LTC3127 power management chip and inductance.
As the improvement of technique scheme, described super capacitor module comprises 6 2.7V/100F super capacitors, adopts two strings three and pattern connection.
As the improvement of technique scheme, described super capacitor discharging management circuit comprises LT3759 power management chip, Si7858DPN raceway groove MSSFET manages and inductance.
As the improvement of technique scheme, described DC5V main secondary power switching circuit comprises LTC4416 power management chip and Si7463DPP channel mosfet pipe.
As the improvement of technique scheme, described super capacitor self-checking circuit comprises Si7858DPN channel mosfet pipe and 10 ohm of 3W resistance.
As the improvement of technique scheme, described control warning circuit adopts TPS3897 voltage checking chip.
The beneficial effects of the utility model have:
The utility model is based on the DC5V double-power supply switching device of super capacitor back-up source, this device carries super capacitor back-up source, by input DC5V power supply DC power supply, super capacitor is charged, and discharge and recharge and self-inspection management are carried out to super capacitor, meanwhile, DC5V voltage is exported by dual power supply switching circuit.When inputting DC5V and having electricity, device exports DC5V voltage; When inputting DC5V power loss, device automatic seamless switches to super capacitor back-up source to power, seamless switching exports DC5V voltage, the advantage such as super capacitor monomer number is few, volume is little, cost is low, capacity usage ratio is high and flying power is strong, is applicable to being applied to controller switching equipment cpu system DC5V Power supply very much.
Accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is the utility model embodiment operation principle block diagram.
Embodiment
See Fig. 1, DC5V double-power supply switching device based on super capacitor back-up source of the present utility model, comprise the super capacitor charge management circuit connected successively, super capacitor module, super capacitor discharging management circuit and DC5V main secondary power switching circuit, described super capacitor charge management circuit input is connected with DC5V power supply, output is connected with cpu system DC5V power supply, described super capacitor self-checking circuit output is respectively with super capacitor charge management circuit with control acknowledge circuit and be connected, described super capacitor self-checking circuit input is connected with super capacitor module.
This device carries super capacitor back-up source, is made up of 6 2.7V/100F super capacitors, and described super capacitor group adopts two strings three and pattern connects, composition 5.4V/150F super capacitor module.
Super capacitor charge management circuit, adopt LTC3127 power management chip and inductance to be the circuit that core forms, realized super capacitor Charge Management by step-down, boosting, super capacitor float charge voltage is DC5.2V, and input charging current is restricted to 0.2A.
Super capacitor discharging management circuit, LT3759 power management chip, Si7858DPN raceway groove MSSFET pipe and inductance is adopted to be the circuit that core forms, by realizing the electric discharge management of super capacitor to super-capacitor voltage boosting, super capacitor discharge range is DC1.8V-DC5.2V.Described LT3759 power management chip possesses wide input range (DC1.6V-DC42V), soft start able to programme, resistance arrange operating frequency, low shutdown electric current (<1uA), possess the features such as sluggish input undervoltage locking able to programme; this chip is managed with low-power consumption, quick on-off Si7858DPN raceway groove MSSFET and inductance coordinates and realizes super capacitor and charge, and super capacitance management circuit possesses low-loss, quick charge, reliably over voltage management function.
Super capacitor self-checking circuit, for differentiating super capacitor life characteristic, Si7858DPN channel mosfet pipe and 10 ohm of 3W resistance are adopted to be the built-up circuit of core, device receives input self-inspection control signal, by 10 ohmic discharge resistance, constant-impedance electric discharge is realized to super capacitor, supporting cpu system, by calculating super capacitor constant-impedance discharge characteristic curve, differentiates super capacitor life characteristic.
Control warning circuit, detect and the under-voltage detection alarm of electric capacity for realizing super capacitor constant-impedance discharge cut-off voltage, MOSFET pipe in input self-inspection control signal super capacitor self-checking circuit is adopted to realize the constant-impedance control of discharge of electric capacity, by being the circuit that core forms by TPS3897 voltage checking chip, realizing super capacitor constant-impedance discharge cut-off voltage and detecting and the under-voltage detection alarm of electric capacity.
DC5V main secondary power switching circuit, adopts LTC4416 power management chip and Si7463DPP channel mosfet pipe to be the circuit that core forms, and implements automatic seamless switching, and export DC5V power supply to DC5V power supply after input DC5V power supply and super capacitor boosting.Described LTC4416 power management chip possesses ultra-low loss (70Ua), wide input range (DC3.6V-DC36V), wide temperature range (-40 DEG C-125 DEG C) feature, it realizes electrical source exchange function together with low-power consumption, quick on-off Si7463DPP channel mosfet pipe, such that DC5V main secondary power switching circuit reliability is higher, loss is lower.
A kind of DC5V double-power supply switching device based on super capacitor back-up source of the utility model, back-up source super capacitor module capacity is 150F, voltage is DC5.4V; Super capacitor charging current is 0.2A, and super capacitor float charge voltage is DC5.2V; Super capacitor discharge voltage range is DC1.8V-DC5.2V; Possess super capacitor management of charging and discharging function, super capacitor self-checking function, alarm function; Super capacitor back-up source can be realized export with the seamless switching of input DC5V power supply.Compare existing distribution terminal DC24V or DC48V super capacitance management system, possess that super capacitor monomer number is few, volume is little, cost is low, capacity usage ratio is high and the advantage such as flying power is strong, be practically applicable to very much controller switching equipment cpu system DC5V Power supply.
The above, just better embodiment of the present utility model, but the utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should belong to protection range of the present utility model.
Claims (8)
1. based on the DC5V double-power supply switching device of super capacitor back-up source, comprise the super capacitor charge management circuit, super capacitor module, super capacitor discharging management circuit and the DC5V main secondary power switching circuit that connect successively, described super capacitor charge management circuit input is connected with DC5V power supply, and output is connected with cpu system DC5V power supply.
2. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, phase is characterised in that, also comprise super capacitor self-checking circuit and control warning circuit, described super capacitor self-checking circuit output is respectively with super capacitor charge management circuit with control acknowledge circuit and be connected, and described super capacitor self-checking circuit input is connected with super capacitor module.
3. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, is characterized in that, described super capacitor charge management circuit comprises LTC3127 power management chip and inductance.
4. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, is characterized in that, described super capacitor module comprises 6 2.7V/100F super capacitors, adopts two strings three and pattern connection.
5. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, is characterized in that, described super capacitor discharging management circuit comprises LT3759 power management chip, Si7858DPN raceway groove MSSFET manages and inductance.
6. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, is characterized in that, described DC5V main secondary power switching circuit comprises LTC4416 power management chip and Si7463DPP channel mosfet pipe.
7. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 1, is characterized in that, described super capacitor self-checking circuit comprises Si7858DPN channel mosfet pipe and 10 ohm of 3W resistance.
8. the DC5V double-power supply switching device based on super capacitor back-up source according to claim 2, is characterized in that, described control warning circuit adopts TPS3897 voltage checking chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520966412.0U CN205231840U (en) | 2015-11-26 | 2015-11-26 | Two switching of power devices of DC5V based on super capacitor back -up source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520966412.0U CN205231840U (en) | 2015-11-26 | 2015-11-26 | Two switching of power devices of DC5V based on super capacitor back -up source |
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| CN205231840U true CN205231840U (en) | 2016-05-11 |
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| CN201520966412.0U Expired - Fee Related CN205231840U (en) | 2015-11-26 | 2015-11-26 | Two switching of power devices of DC5V based on super capacitor back -up source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337402A (en) * | 2015-11-26 | 2016-02-17 | 珠海许继电气有限公司 | DC5V dual-power-source switching device based on super-capacitor backup source |
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2015
- 2015-11-26 CN CN201520966412.0U patent/CN205231840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337402A (en) * | 2015-11-26 | 2016-02-17 | 珠海许继电气有限公司 | DC5V dual-power-source switching device based on super-capacitor backup source |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20181126 |