CN207098695U - A kind of supply self adaptation charging circuit - Google Patents
A kind of supply self adaptation charging circuit Download PDFInfo
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- CN207098695U CN207098695U CN201720984853.2U CN201720984853U CN207098695U CN 207098695 U CN207098695 U CN 207098695U CN 201720984853 U CN201720984853 U CN 201720984853U CN 207098695 U CN207098695 U CN 207098695U
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- 238000007600 charging Methods 0.000 title claims abstract description 33
- 230000006978 adaptation Effects 0.000 title claims abstract description 14
- 238000010277 constant-current charging Methods 0.000 claims abstract description 31
- 239000004065 semiconductor Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 description 9
- 230000007812 deficiency Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 101100219315 Arabidopsis thaliana CYP83A1 gene Proteins 0.000 description 2
- 101000806846 Homo sapiens DNA-(apurinic or apyrimidinic site) endonuclease Proteins 0.000 description 2
- 101000835083 Homo sapiens Tissue factor pathway inhibitor 2 Proteins 0.000 description 2
- 101100269674 Mus musculus Alyref2 gene Proteins 0.000 description 2
- 101100140580 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) REF2 gene Proteins 0.000 description 2
- 102100026134 Tissue factor pathway inhibitor 2 Human genes 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of supply self adaptation charging circuit, including power detecting and control circuit, controlled switch and constant-current charging circuit.The utility model can adapt to and match automatically the fan-out capability of power supply, and when power supply fan-out capability is strong, the current capacity that power supply can provide is more than the constant-current charge electric current of setting, and charging circuit is worked with constant current charging method；When power supply fan-out capability is weak, the current capacity that power supply can provide is less than the constant-current charge electric current of setting, the electric current provided with power supply charges, so as to the energy for effectively utilizing power supply to provide, in the power supply unit unstable particularly suitable for the same power supply capacity of similar solar cell.
Description
Technical field
The utility model belongs to electronic technology field, is related to power management techniques, especially rechargeable battery Charge Management
Technology.
Background technology
With the development of new energy technology, solar cell is as a kind of power supply energy, using increasingly popularizing, solar energy
Generate electricity, solar street light, portable charging apparatus etc., all using solar cell as power supply energy.But solar cell meeting
Being influenceed by season, weather and day-night change so that its generating output current is unstable, sunny when, solar-electricity
Pond output current is big, and when sunlight deficiency, solar cell output current is small, and solar cell is almost without electricity during night
Stream output.Therefore solar cell can not be separately as power supply power supply to the device, it is necessary to which rechargeable battery of arranging in pairs or groups makes together
With, by rechargeable battery be equipment power, and by solar cell as electricity ancillary equipment to charging current for charging.
Rechargeable battery is generally the height ratio capacity battery such as Ni-MH battery, nickel-cadmium cell, lithium battery, and these batteries have body
The characteristics of product is small, capacity is big, can be as the energy storage device of high performance-price ratio, but these rechargeable batteries are required for special fill
Fulgurite reason circuit is controlled to its charging current, to prevent that battery is caused to damage and produce danger.Traditional Charge Management
Circuit typically all using constant current, constant voltage charging method, limits the maximum charging current of battery, ensures its security to charge.But
This charging modes have a problem that, when power supply energy is insufficient, i.e., electric power outputting current is much smaller than the charging current designed,
Heavy duty is added equivalent to power supply, power supply will be pulled low, and cause the subnormal charge management circuit operating voltage range of power supply,
So as to be unable to reach the purpose to battery charging, or there can be --- power-off --- cyclic process of charging of charging repeatedly, this
The charge efficiency of kind situation can be greatly reduced, and the life-span of rechargeable battery is related to charging times, such charging modes
Also the service life of rechargeable battery can be influenceed.And solar cell as power supply when, will have this power supply energy not
The situation of foot.
Due to the output current unstability of solar cell, it is supplied to the electric current of rechargeable battery in different time size
Difference, it can so cause normal constant current, constant-voltage charge management circuit work abnormal, when the output current of solar cell reaches
To constant-current charging circuit current capacity when, can charge；When solar cell is far below the current capacity of constant-current charging circuit
When, charging will be closed, and rechargeable battery can not be charged.
It is particularly defeated in sunlight deficiency, solar cell in order to utilize electricity caused by solar cell to greatest extent
Go out electric current it is smaller when, also can effectively collect electricity caused by solar cell, this just needs charge management circuit to can adapt to electricity
Source output current, when electric power outputting current is more than constant-current charge electric current, rechargeable battery is charged with current constant mode；Work as power supply
When output current is less than constant-current charge electric current, rechargeable battery is charged with electric power outputting current.
Utility model content
The purpose of this utility model is to provide a kind of supply self adaptation charging circuit, can adapt to and match automatically power supply
Fan-out capability, when power supply fan-out capability is strong, current capacity that power supply can provide is more than the constant-current charge electric current of setting, charging
Circuit is worked with constant current charging method；When power supply fan-out capability is weak, the current capacity that power supply can provide is less than the constant current of setting
Charging current, the electric current provided with power supply charge.
In order to achieve the above object, solution of the present utility model is：
A kind of supply self adaptation charging circuit, including power detecting and control circuit, controlled switch and constant-current charging circuit；
The power detecting includes resistance R1, R2 and operational amplifier A 1 with control circuit；Described resistance R1, R2 form electricity
Potential-divider network is hindered, for carrying out sample detecting to supply voltage；Described resistance R1, R2 first end connect, and are connected to the fortune
Calculate amplifier A1 first input end；The second end of the resistance R1 is the first input of the power detecting and control circuit
End, external power supply voltage；The second end of the resistance R2 is the power detecting and the second input of control circuit, external
Ground；Second input of the operational amplifier A 1 is the power detecting and the 3rd input of control circuit, external base
Quasi- voltage；The output end of the operational amplifier A 1 is the output end of the power detecting and control circuit, and described controlled
The input of switch connects；
The constant-current charging circuit includes metal-oxide-semiconductor M1, M2, M3, operational amplifier A 2, A3 and resistance R3, R4；The MOS
Pipe M1 and M2 first end connect, the first input end of as described constant-current charging circuit, external power supply voltage；The metal-oxide-semiconductor
M1 and M2 the second end connects, and is connected to the output end of the operational amplifier A 2, the 3rd end of the metal-oxide-semiconductor M1 with it is described
The first input end of metal-oxide-semiconductor M3 first end and the operational amplifier A 3 connects, the 3rd end and the fortune of the metal-oxide-semiconductor M2
The second input for calculating amplifier A3 connects, the output end of as described constant-current charging circuit, and is external in BAT output ends, with
Rechargeable battery positive pole connects；The second end of the metal-oxide-semiconductor M3 connects with the output end of the operational amplifier A 3, the MOS
Pipe M3 the 3rd end connects with described resistance R3, R4 first end；The second end of the resistance R3 is the constant-current charge electricity
Second input on road, external ground；The second end of the resistance R4 connects with the first input end of the operational amplifier A 2, i.e.,
For the 3rd input of the constant-current charging circuit, the output end of the controlled switch is connected to；The operational amplifier A 2
Second input is the 4th input of the constant-current charging circuit, external reference voltage.
The controlled switch, which is diode, triode, metal-oxide-semiconductor switch or switchs the combined type formed by above-mentioned three kinds opens
Close.
The power detecting and the external reference voltage of the 3rd input of control circuit and the constant-current charging circuit
The external reference voltage of 4th input can be same reference voltage or different reference voltages.
The metal-oxide-semiconductor M1 and M2 is p-type；The metal-oxide-semiconductor M3 is p-type or N-type；The resistance most I of the resistance R4 is 0
Ohm；The resistance most I of the resistance R3 is 0 ohm.
Due to being using such scheme, the beneficial effects of the utility model：The utility model supply self adaptation charging circuit
Automatically the fan-out capability of power supply can be adapted to and match, when power supply fan-out capability is strong, the current capacity that power supply can provide is more than
The constant-current charge electric current of setting, charging circuit are worked with constant current charging method；When power supply fan-out capability is weak, what power supply can provide
Current capacity is less than the constant-current charge electric current of setting, and the electric current provided with power supply charges.So as to effectively utilize power supply to provide
Energy, in the power supply unit unstable particularly suitable for the similar the same power supply capacity of solar cell.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is the structural representation of supply self adaptation charging circuit in the embodiment of the utility model one.
In accompanying drawing：101st, power detecting and control circuit；102nd, controlled switch；103rd, constant-current charging circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model proposes a kind of supply self adaptation charging circuit, Fig. 1 is the structural representation of the circuit.
As shown in figure 1, the supply self adaptation charging circuit includes：Power detecting and control circuit 101, controlled switch 102
With constant-current charging circuit 103.
The first input end external power supply voltage of power detecting and control circuit 101, the of source Detection ＆ Controling circuit 101
Two input external grounds, the external reference voltage V REF2 of the 3rd input of power detecting and control circuit 101, power detecting with
The output end of control circuit 101 connects the input of controlled switch 102；The output termination constant-current charging circuit 103 of controlled switch 102
The 3rd input；The external reference voltage V REF1 of the 4th input of constant-current charging circuit 103, the of constant-current charging circuit 103
One input external power supply voltage, the second input external ground of constant-current charging circuit 103, outside the output end of constant-current charging circuit
Rechargeable battery is connect, for being charged to rechargeable battery.
Power detecting includes resistance R1, R2 and operational amplifier A 1 with control circuit 101；Resistance R1, R2 form resistance point
Pressure network network, for carrying out sample detecting to supply voltage；Resistance R1, R2 first end connect, and are connected to operational amplifier A 1
First input end；Resistance R1 the second end external power supply voltage；Resistance R2 the second end external ground；The second of operational amplifier A 1
The external reference voltage V REF2 of input；The output end of operational amplifier A 1 connects with the input of controlled switch 102.
Controlled switch 102 is diode, triode or field-effect transistor (metal-oxide-semiconductor) switch and is made up of these three switches
Packet type switch.
Constant-current charging circuit 103 includes metal-oxide-semiconductor M1, M2, M3, operational amplifier A 2, A3 and resistance R3, R4；Metal-oxide-semiconductor M1 and
M2 first end connects, external power supply voltage；Metal-oxide-semiconductor M1 and M2 the second end connect, and are connected to the output of operational amplifier A 2
End, metal-oxide-semiconductor M1 the 3rd end connects with metal-oxide-semiconductor M3 first end and the first input end of operational amplifier A 3, and the of metal-oxide-semiconductor M2
Three ends connect with the second input of operational amplifier A 3, and are external in BAT output ends, connect with rechargeable battery positive pole；MOS
Pipe M3 the second end connects with the output end of operational amplifier A 3, metal-oxide-semiconductor M3 the 3rd end and resistance R3, R4 first end phase
Connect；Resistance R3 the second end external ground；Resistance R4 the second end connects with the first input end of operational amplifier A 2, be connected to by
The output end of control switch 102；The external reference voltage V REF1 of the second input of operational amplifier A 2.
Power detecting detects power supply with control circuit 101 by its internal resistance pressure-dividing network R1 and R2, when power supply is defeated
When going out electric current abundance, supply voltage is higher, and the voltage of resistance pressure-dividing network output is more than the input terminal voltage of operational amplifier A 1
VREF2, now operational amplifier A 1 output end output low signal, controlled switch are not turned on.Integrated circuit is operated in constant current and filled
Under electric control pattern, constant-current charging function is completed by constant-current charging circuit 103.When the output current deficiency of power supply, power supply electricity
Drops, the voltage less-than operation amplifier A1 input terminal voltage VREF2 of resistance pressure-dividing network output, now operational amplifier A 1
Output end output high RST, controlled switch conducting, power detecting and control loop start working, and forms negative feedback control, control
Integrated circuit processed is operated in low charge current mode, so as to match the output current ability of power supply.
The utility model supply self adaptation charging circuit solves traditional charging control circuit in power supply fan-out capability deficiency
In the case of rechargeable battery can not be charged, or the irregular working situation of charging break-make repeatedly can be applied to solar-electricity
In battery-powered equipment, the efficiency of solar cell application is improved, it is practical.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using originally special
Profit.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to here
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within the scope of protection of the utility model.
Claims (4)
- A kind of 1. supply self adaptation charging circuit, it is characterised in that：Including power detecting and control circuit, controlled switch and constant current Charging circuit；The power detecting includes resistance R1, R2 and operational amplifier A 1 with control circuit；Described resistance R1, R2 form resistance point Pressure network network, for carrying out sample detecting to supply voltage；Described resistance R1, R2 first end connect, and are connected to the computing and put Big device A1 first input end；The second end of the resistance R1 is the power detecting and the first input end of control circuit, External power supply voltage；The second end of the resistance R2 is the power detecting and the second input of control circuit, external ground； Second input of the operational amplifier A 1 is the power detecting and the 3rd input of control circuit, and external benchmark is electric Pressure；The output end of the operational amplifier A 1 is the output end of the power detecting and control circuit, with the controlled switch Input connect；The constant-current charging circuit includes metal-oxide-semiconductor M1, M2, M3, operational amplifier A 2, A3 and resistance R3, R4；The metal-oxide-semiconductor M1 Connect with M2 first end, the first input end of as described constant-current charging circuit, external power supply voltage；The metal-oxide-semiconductor M1 and M2 the second end connects, and is connected to the output end of the operational amplifier A 2, the 3rd end and the metal-oxide-semiconductor of the metal-oxide-semiconductor M1 The first input end of M3 first end and the operational amplifier A 3 connects, and the 3rd end of the metal-oxide-semiconductor M2 is put with the computing Big device A3 the second input connects, the output end of as described constant-current charging circuit, and is external in BAT output ends, with that can fill Electric anode connects；The second end of the metal-oxide-semiconductor M3 connects with the output end of the operational amplifier A 3, the metal-oxide-semiconductor M3 The 3rd end connect with described resistance R3, R4 first end；The second end of the resistance R3 is the constant-current charging circuit Second input, external ground；The second end of the resistance R4 connects with the first input end of the operational amplifier A 2, as institute The 3rd input of constant-current charging circuit is stated, is connected to the output end of the controlled switch；The second of the operational amplifier A 2 Input is the 4th input of the constant-current charging circuit, external reference voltage.
- 2. supply self adaptation charging circuit according to claim 1, it is characterised in that：The controlled switch be diode, Triode, metal-oxide-semiconductor switch switch the packet type switch formed by above-mentioned three kinds.
- 3. supply self adaptation charging circuit according to claim 1, it is characterised in that：The power detecting and control circuit The external reference voltage reference voltage external with the 4th input of the constant-current charging circuit of the 3rd input can be Same reference voltage or different reference voltages.
- 4. supply self adaptation charging circuit according to claim 1, it is characterised in that：The metal-oxide-semiconductor M1 and M2 is p-type； The metal-oxide-semiconductor M3 is p-type or N-type；The resistance most I of the resistance R4 is 0 ohm；The resistance most I of the resistance R3 is 0 Ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720984853.2U CN207098695U (en) | 2017-08-08 | 2017-08-08 | A kind of supply self adaptation charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720984853.2U CN207098695U (en) | 2017-08-08 | 2017-08-08 | A kind of supply self adaptation charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098695U true CN207098695U (en) | 2018-03-13 |
Family
ID=61544655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720984853.2U Withdrawn - After Issue CN207098695U (en) | 2017-08-08 | 2017-08-08 | A kind of supply self adaptation charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207098695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979124A (en) * | 2017-08-08 | 2018-05-01 | 上海裕芯电子科技有限公司 | A kind of supply self adaptation charging circuit |
-
2017
- 2017-08-08 CN CN201720984853.2U patent/CN207098695U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979124A (en) * | 2017-08-08 | 2018-05-01 | 上海裕芯电子科技有限公司 | A kind of supply self adaptation charging circuit |
| CN107979124B (en) * | 2017-08-08 | 2024-03-22 | 上海裕芯电子科技有限公司 | Power supply self-adaptive charging circuit |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180313 Effective date of abandoning: 20240322 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180313 Effective date of abandoning: 20240322 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |