CN202026121U - Microamp charging and discharging control circuit used in low power consumption circuit and low power consumption circuit - Google Patents
Microamp charging and discharging control circuit used in low power consumption circuit and low power consumption circuit Download PDFInfo
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- CN202026121U CN202026121U CN2011200121563U CN201120012156U CN202026121U CN 202026121 U CN202026121 U CN 202026121U CN 2011200121563 U CN2011200121563 U CN 2011200121563U CN 201120012156 U CN201120012156 U CN 201120012156U CN 202026121 U CN202026121 U CN 202026121U
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Abstract
The utility model relates to a microamp charging and discharging control circuit used in a low power consumption circuit and the low power consumption circuit. Charging control of a charging and discharging capacitor C4 of the microamp charging and discharging control circuit consists of a low voltage difference linear voltage regulator and a field transistor, wherein a grid of the field transistor is connected with the output end of an LDO (low drop output), and a source cathode of a VT1 is connected with the input end of the LDO. Based on the technical scheme, connection and disconnection of the VT1 is controlled by a difference of input voltage and output voltage of the LDO; when input of a VD4 is not sufficient to supply main power consumption of a system, the difference of the input voltage and the output voltage of the LDO is not sufficient to turn on the field transistor; and when the output energy of the VD4 is sufficient to drive a main system load, the difference of the input voltage and the output voltage of the LDO is sufficient to turn on the field transistor VT1, therefore, the redundant energy collected from environmental energy can be stored in an energy storage capacitor C4, so that the redundant energy is stored when the power is supplied.
Description
Technical field
The utility model relates to a kind of charge-discharge control circuit that is applied in the low consumption circuit, particularly is used for low consumption circuit, reaches the microampere order charge-discharge control circuit of microampere order.Simultaneously, the utility model also relates to the low consumption circuit with described microampere order charge-discharge control circuit.
Background technology
The low consumption circuit system of industry use at present generally uses powered battery.Because battery uses age limit is arranged, therefore need to gather the external environment condition energy and come balancing battery, reach and improve the battery effect in useful life.
Environmental energy generally includes solar energy, vibrational energy, electromagnetic energy or the like.After environmental energy collects in the Circuits System, the purposes of two aspects is arranged, be used for the work of little power consumption main system on the one hand; Be used for store energy (using electric capacity to realize usually) on the other hand, standby powerful application.
Environmental energy all is very faint usually, and the energy that obtains from collecting mechanism is the microwatt level normally.Traditional charge-discharge control circuit belongs to a milliampere level Current Control, is not suitable for the application scenario of low-power consumption.The path that discharges and recharges for the microampere order electric current is controlled, and industry does not also have ripe scheme at present.Realize that cost is higher, only has theory significance though can use the existing peace level low power consumption comparator of receiving in theory.
The utility model content
In order to solve above-mentioned problems of the prior art, the utility model proposes a kind of be used for low consumption circuit the microampere order charge-discharge control circuit, relate to the charge path control technology, be the technology of a kind of extremely low power dissipation, very low cost, high reliability.Present technique has been filled up environmental energy and has been gathered the vacancy that field, particularly microampere order discharge and recharge the path control technology.
The utility model also provides the low consumption circuit with described microampere order charge-discharge control circuit in addition.
The main technical schemes that the microampere order charge-discharge control circuit that is used for low consumption circuit that the utility model provides adopts is: comprise voltage doubling rectifing circuit, described voltage doubling rectifing circuit receives the electric current of power supply collecting mechanism input in the low consumption circuit, also comprises power supply circuits and signal processing circuit; Described power supply circuits comprise the first power supply branch road, the second power supply branch road and the 3rd power supply branch road; Be in series with battery and the 3rd diode in the described first power supply branch road, be in series with the 4th diode in the described second power supply branch road, comprise field effect transistor and the 5th diode and storage capacitor in described the 3rd power supply branch road, described signal processing circuit comprises low pressure difference linear voltage regulator; One end of described the 3rd diode, the 4th diode and the 5th diode links to each other with the input of described low pressure difference linear voltage regulator, the other end of described the 4th diode links to each other with described voltage doubling rectifing circuit, the input of described low pressure difference linear voltage regulator also links to each other with the source electrode of described field effect transistor, the output of described low pressure difference linear voltage regulator links to each other with the grid of described field effect transistor, the other end of the drain electrode of described field effect transistor and the 5th diode is connected described storage capacitor other end ground connection jointly with an end of described storage capacitor.
The microampere order charge-discharge control circuit that is used for low consumption circuit that the utility model provides also adopts following attached technical scheme:
Described signal processing circuit also comprises the 5th electric capacity and the 6th electric capacity, one termination of described the 5th electric capacity is gone into input, the other end ground connection of described low pressure difference linear voltage regulator, one termination of described the 6th electric capacity is gone into grid, the other end ground connection of described field effect transistor, the earth terminal ground connection of described low pressure difference linear voltage regulator.
One end ground connection of described battery, the other end are connected with described the 3rd diode other end.
The other end of described the 4th diode links to each other with the output of described voltage doubling rectifing circuit.
Described voltage doubling rectifing circuit comprises Transient Suppression Diode, first electric capacity, second electric capacity, the 3rd electric capacity, voltage stabilizing didoe, and bridge rectifier, be connected with described Transient Suppression Diode between 3 pin of described bridge rectifier and 4 pin, be connected with described first electric capacity between 2 pin of described bridge rectifier and 3 pin, and 2 pin ground connection of described bridge rectifier, be connected with described second electric capacity between 1 pin of described bridge rectifier and 3 pin, an end ground connection of an end of described the 3rd electric capacity and voltage stabilizing didoe, the other end together links to each other with the other end of described the 4th diode with 1 pin of described bridge rectifier.
The two ends of described Transient Suppression Diode link to each other with power supply collecting mechanism in the low consumption circuit, absorb excessive peak current.
The main technical schemes that the low consumption circuit with microampere order charge-discharge control circuit that adopts the utility model to provide adopts is: comprise the power supply collecting mechanism, described power supply collecting mechanism links to each other with described voltage doubling rectifing circuit, the microampere order charge-discharge control circuit that is used for low consumption circuit comprises voltage doubling rectifing circuit, described voltage doubling rectifing circuit receives the electric current of power supply collecting mechanism input in the low consumption circuit, also comprises power supply circuits and signal processing circuit; Described power supply circuits comprise the first power supply branch road, the second power supply branch road and the 3rd power supply branch road; Be in series with battery and the 3rd diode in the described first power supply branch road, be in series with the 4th diode in the described second power supply branch road, comprise field effect transistor and the 5th diode and storage capacitor in described the 3rd power supply branch road, described signal processing circuit comprises low pressure difference linear voltage regulator; One end of described the 3rd diode, the 4th diode and the 5th diode links to each other with the input of described low pressure difference linear voltage regulator, the other end of described the 4th diode links to each other with described voltage doubling rectifing circuit, the input of described low pressure difference linear voltage regulator also links to each other with the source electrode of described field effect transistor, the output of described low pressure difference linear voltage regulator links to each other with the grid of described field effect transistor, the other end of the drain electrode of described field effect transistor and the 5th diode is connected described storage capacitor other end ground connection jointly with an end of described storage capacitor.
The beneficial effect that the microampere order charge-discharge control circuit that is used for low consumption circuit that adopts the utility model to provide brings is: the charging control that (1) charges and discharge electric capacity C4 is made of low pressure difference linear voltage regulator LDO and field effect transistor VT1, the grid of VT1 (3 pin) is connected on the output (3 pin) of LDO, and the source electrode of VT1 (4 pin) is connected on the input (2 pin) of LDO.The conducting that this programme utilizes LDO input and the pressure reduction control VT1 of output with end.When the VT4 input was not enough to provide the master of system electrical power consumed, the input of LDO and the pressure reduction of output were not enough to open field effect transistor VT1.When the output energy of VD4 enough drives the main system load, the input of LDO and the pressure reduction of output will be enough to open field effect transistor VT1.At this moment the unnecessary energy that collects from environmental energy will be kept among the storage capacitor C4, when realizing power supply unnecessary electrical power storage be got up.(2) 3 power supply branch roads, the first power supply branch road is battery-powered, and the second power supply branch road is directly powered by the voltage doubling rectifing circuit input, the 3rd route storage capacitor C4 discharge power supply.Going here and there respectively in 3 power supply branch roads has the 3rd diode, the 4th diode, the 5th diode, and the characteristic of these three diodes is: output voltage is higher than input voltage offset, and output voltage is less than the input voltage conducting.Preferential the 4th diode VD4 out-put supply that uses when the environmental energy power input voltage is enough high.When the 4th diode VD4 output was very little, the output of systematic comparison the 3rd diode VD3 and the 5th diode VD5 was preferentially used the 5th diode VD5 out-put supply when charging and discharging when electric capacity C4 charging voltage is higher than cell voltage.When environmental energy and the equal deficiency of capacitance energy storage, just use battery supply, this moment, power supply was exported by the 3rd diode VD3, and other two-way diodes end.Remain and have only 1 tunnel power supply in 3 power supply branch roads.Thereby continuing of proof load power supply is lasting.This design has realized discharging and recharging from the small energy that external environment collects the control in path.When environmental energy hour, environmental energy will only offer the main system load; When environmental energy is big, the excess energy except main system work is provided will be stored in and charge and discharge among (farad) electric capacity.
Description of drawings
Fig. 1 is the circuit diagram of the utility model microampere order charge-discharge control circuit.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description:
As shown in Figure 1, a kind of microampere order charge-discharge control circuit that is used for low consumption circuit that provides for utility model, comprise voltage doubling rectifing circuit, described voltage doubling rectifing circuit receives the electric current of power supply collecting mechanism input in the low consumption circuit, also comprises power supply circuits and signal processing circuit;
Described power supply circuits comprise the first power supply branch road, the second power supply branch road and the 3rd power supply branch road.Be in series with battery BT1 and the 3rd diode VD3 in the described first power supply branch road, be in series with the 4th diode VD4 in the described second power supply branch road, comprise field effect transistor VT1 and the 5th diode VD5 and storage capacitor C4 in described the 3rd power supply branch road, described signal processing circuit comprises low pressure difference linear voltage regulator LDO.Described the 3rd diode VD3, the end of the 4th diode VD4 and the 5th diode VD5 links to each other with input 2 pin of described low pressure difference linear voltage regulator LDO, the other end of described the 4th diode VD4 links to each other with described voltage doubling rectifing circuit, input 2 pin of described low pressure difference linear voltage regulator LDO also link to each other with source electrode 4 pin of described field effect transistor VT1, output 3 pin of described low pressure difference linear voltage regulator LDO link to each other with grid 3 pin of described field effect transistor VT1, drain electrode 1 pin of described field effect transistor VT1,2 pin, 5 pin, the other end of 6 pin and the 5th diode VD5 is connected with the end of described storage capacitor C4 jointly, describedly charges and discharge electric capacity C4 other end ground connection.
Described signal processing circuit also comprises the 5th capacitor C 5 and the 6th capacitor C 6, one termination of described the 5th capacitor C 5 is gone into input 2 pin, the other end ground connection of described low pressure difference linear voltage regulator LDO, one termination of described the 6th capacitor C 6 is gone into grid 3 pin, the other end ground connection of described field effect transistor VT1, the earth terminal 1 pin ground connection of described low pressure difference linear voltage regulator LDO.The 5th capacitor C 5 and the 6th capacitor C 6 play the effect of energy storage filtering here, use electric loading to obtain level and smooth stable voltage.
The end ground connection of described battery BT1, the other end are connected with described the 3rd diode VD3 other end.Battery BT1 is as the another kind of supply power mode beyond the second power supply branch road.Prolong whole power-up period.
The other end of described the 4th diode links to each other with the output of described voltage doubling rectifing circuit.Described voltage doubling rectifing circuit comprises Transient Suppression Diode VD1, first capacitor C 1, second capacitor C 2, voltage stabilizing didoe VD2, and bridge rectifier, be connected with described Transient Suppression Diode VD1 between 3 pin of described bridge rectifier and 4 pin, be connected with described first capacitor C 1 between 2 pin of described bridge rectifier and 3 pin, and 2 pin ground connection of described bridge rectifier, be connected with described second capacitor C 2 between 1 pin of described bridge rectifier and 3 pin, the end ground connection of an end of described the 3rd capacitor C 3 and voltage stabilizing didoe VD2, the other end together links to each other with the other end of described the 4th diode VD4 with 1 pin of described bridge rectifier.
The effect of voltage doubling rectifing circuit is ambient voltage to be carried out rectifying and wave-filtering handle, and simultaneously electric current is carried out exporting power supply circuits to after multiplication of voltage is handled.Because limit by environment, the voltage of collection is lower, need carry out just can finishing follow-up work after multiplication of voltage is handled to it.
The two ends of described Transient Suppression Diode VD1 link to each other with power supply collecting mechanism in the low consumption circuit, receive the electric current of its input, and Transient Suppression Diode VD1 plays pressure stabilization function, prevents the big electric current of moment, high-tension impact.Provide protection to the circuit elements device.
The microampere order charge-discharge control circuit that the utility model provides utilizes the pressure reduction of the input of LDO and output to change, and realizes the conducting of field effect transistor VT1 or ends.During conducting, then in power supply, storage capacitor C4 is charged.In the present embodiment, LDO adopt model be HT7530, the model that field effect transistor VT1 adopts is Si3443DV.When the pressure reduction of the input (2 pin) of LDO and output (3 pin) during greater than 0.6v, the VT1 conducting is charged to charging and discharging electric capacity C4 in power supply.When the pressure reduction of the input (2 pin) of LDO and output (3 pin) during less than 0.6v, VT1 remain off then.Aspect power supply, the diode in 3 branch roads utilizes the variation conducting or the disconnection of output and input pressure reduction.In the ordinary course of things, by the electric current power supply of voltage doubling rectifing circuit input, the input of the 4th diode VD4 of the second power supply branch road is greater than output, and conducting is powered, the diode in the road of other two power supplies, and the voltage of output is greater than the voltage remain off of input.When the environment power supply weakens, the output of the 4th diode ends during greater than input, and this moment, the diode in two power supply branch roads compared preferential the 5th diode VD5 out-put supply that uses when storage capacitor C4 charging voltage is higher than battery BT1 voltage in addition.When environmental energy and the equal deficiency of capacitance energy storage, just use battery supply, this moment, power supply was exported by the 3rd diode VD3, and other two-way diodes end.Remain and have only 1 tunnel power supply in 3 power supply branch roads.Thereby continuing of proof load power supply is lasting.This design has realized discharging and recharging from the small energy that external environment collects the control in path.When environmental energy hour, environmental energy will only offer the main system load; When environmental energy is big, the excess energy except main system work is provided will be stored among energy storage (farad) electric capacity.
The utility model is except providing above-mentioned microampere order charge-discharge control circuit, low consumption circuit with above-mentioned microampere order charge-discharge control circuit also is provided, comprise the power supply collecting mechanism, described power supply collecting mechanism links to each other with described voltage doubling rectifing circuit, the power supply input voltage doubling rectifing circuit that will collect from environment is carried out rectifying and wave-filtering, multiplication of voltage processing by voltage doubling rectifing circuit to power supply.
In the present embodiment, described power supply collecting mechanism is a current transformer.Output 3 pin of described low pressure difference linear voltage regulator LDO are connected with load.The visual concrete environment of load and different is such as being single-chip microcomputer or telecommunication module, data processing unit etc.Adopt microampere order to discharge and recharge control, can guarantee that whole low consumption circuit is in long-term, the stable operational environment, have long-term, stable power supply and guarantee.Prolong the useful life of entire mechanism.
Claims (9)
1. be used for the microampere order charge-discharge control circuit of low consumption circuit, it is characterized in that: comprise voltage doubling rectifing circuit, described voltage doubling rectifing circuit receives the electric current of power supply collecting mechanism input in the low consumption circuit,
Also comprise power supply circuits and signal processing circuit;
Described power supply circuits comprise the first power supply branch road, the second power supply branch road and the 3rd power supply branch road;
Be in series with battery and the 3rd diode in the described first power supply branch road, be in series with the 4th diode in the described second power supply branch road, comprise field effect transistor and the 5th diode and storage capacitor in described the 3rd power supply branch road, described signal processing circuit comprises low pressure difference linear voltage regulator;
One end of described the 3rd diode, the 4th diode and the 5th diode links to each other with the input of described low pressure difference linear voltage regulator, the other end of described the 4th diode links to each other with described voltage doubling rectifing circuit, the input of described low pressure difference linear voltage regulator also links to each other with the source electrode of described field effect transistor, the output of described low pressure difference linear voltage regulator links to each other with the grid of described field effect transistor, the other end of the drain electrode of described field effect transistor and the 5th diode is connected described storage capacitor other end ground connection jointly with an end of described storage capacitor.
2. microampere order charge-discharge control circuit according to claim 1, it is characterized in that: described signal processing circuit also comprises the 5th electric capacity and the 6th electric capacity, one termination of described the 5th electric capacity is gone into input, the other end ground connection of described low pressure difference linear voltage regulator, one termination of described the 6th electric capacity is gone into grid, the other end ground connection of described field effect transistor, the earth terminal ground connection of described low pressure difference linear voltage regulator.
3. microampere order charge-discharge control circuit according to claim 1 and 2 is characterized in that: an end ground connection of described battery, the other end are connected with described the 3rd diode other end.
4. microampere order charge-discharge control circuit according to claim 3 is characterized in that: the other end of described the 4th diode links to each other with the output of described voltage doubling rectifing circuit.
5. microampere order charge-discharge control circuit according to claim 4, it is characterized in that: described voltage doubling rectifing circuit comprises Transient Suppression Diode, first electric capacity, second electric capacity, the 3rd electric capacity, voltage stabilizing didoe, and bridge rectifier, be connected with described Transient Suppression Diode between 3 pin of described bridge rectifier and 4 pin, be connected with described first electric capacity between 2 pin of described bridge rectifier and 3 pin, and 2 pin ground connection of described bridge rectifier, be connected with described second electric capacity between 1 pin of described bridge rectifier and 3 pin, an end ground connection of an end of described the 3rd electric capacity and voltage stabilizing didoe, the other end together links to each other with the other end of described the 4th diode with 1 pin of described bridge rectifier.
6. microampere order charge-discharge control circuit according to claim 5 is characterized in that: the two ends of described Transient Suppression Diode link to each other with power supply collecting mechanism in the low consumption circuit, absorb excessive peak current.
7. have the low consumption circuit of the arbitrary described microampere order charge-discharge control circuit of aforesaid right requirement 1-6, comprise the power supply collecting mechanism, it is characterized in that: described power supply collecting mechanism links to each other with described voltage doubling rectifing circuit.
8. low consumption circuit according to claim 7 is characterized in that: described power supply collecting mechanism is a current transformer.
9. low consumption circuit according to claim 7 is characterized in that: the output of described low pressure difference linear voltage regulator is connected with load.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200121563U CN202026121U (en) | 2011-01-14 | 2011-01-14 | Microamp charging and discharging control circuit used in low power consumption circuit and low power consumption circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200121563U CN202026121U (en) | 2011-01-14 | 2011-01-14 | Microamp charging and discharging control circuit used in low power consumption circuit and low power consumption circuit |
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| CN202026121U true CN202026121U (en) | 2011-11-02 |
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| CN2011200121563U Expired - Lifetime CN202026121U (en) | 2011-01-14 | 2011-01-14 | Microamp charging and discharging control circuit used in low power consumption circuit and low power consumption circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593932A (en) * | 2011-01-14 | 2012-07-18 | 北京科锐配电自动化股份有限公司 | Microampere-scale charging and discharging control circuit for low-power-consumption circuit and low-power-consumption circuit |
| CN104410302A (en) * | 2013-11-27 | 2015-03-11 | 南京世都科技有限公司 | Energy collector for arrestor monitoring system |
| CN105511539A (en) * | 2015-12-31 | 2016-04-20 | 无锡迪思微电子有限公司 | Method for controlling output stability of LDO (Low Dropout Regulator) and circuit for realizing method |
| CN106817801A (en) * | 2015-11-30 | 2017-06-09 | 沛亨半导体股份有限公司 | Alternating-current light emitting diode illuminator, LED controller and control method |
-
2011
- 2011-01-14 CN CN2011200121563U patent/CN202026121U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593932A (en) * | 2011-01-14 | 2012-07-18 | 北京科锐配电自动化股份有限公司 | Microampere-scale charging and discharging control circuit for low-power-consumption circuit and low-power-consumption circuit |
| CN102593932B (en) * | 2011-01-14 | 2014-03-19 | 北京科锐配电自动化股份有限公司 | Microampere-scale charging and discharging control circuit for low-power-consumption circuit and low-power-consumption circuit |
| CN104410302A (en) * | 2013-11-27 | 2015-03-11 | 南京世都科技有限公司 | Energy collector for arrestor monitoring system |
| CN104410302B (en) * | 2013-11-27 | 2017-02-22 | 南京世都科技有限公司 | Energy collector for arrestor monitoring system |
| CN106817801A (en) * | 2015-11-30 | 2017-06-09 | 沛亨半导体股份有限公司 | Alternating-current light emitting diode illuminator, LED controller and control method |
| CN106817801B (en) * | 2015-11-30 | 2018-09-18 | 沛亨半导体股份有限公司 | Alternating-current light emitting diode lighting system, LED controller and control method |
| CN105511539A (en) * | 2015-12-31 | 2016-04-20 | 无锡迪思微电子有限公司 | Method for controlling output stability of LDO (Low Dropout Regulator) and circuit for realizing method |
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Granted publication date: 20111102 Effective date of abandoning: 20140319 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20111102 Effective date of abandoning: 20140319 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |