CN206099392U - Charging system of constant current control - Google Patents
Charging system of constant current control Download PDFInfo
- Publication number
- CN206099392U CN206099392U CN201620885389.7U CN201620885389U CN206099392U CN 206099392 U CN206099392 U CN 206099392U CN 201620885389 U CN201620885389 U CN 201620885389U CN 206099392 U CN206099392 U CN 206099392U
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- battery
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- charging
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- 238000007600 charging Methods 0.000 title claims abstract description 67
- 238000001514 detection method Methods 0.000 claims description 26
- 230000009467 reduction Effects 0.000 claims description 20
- 230000036772 blood pressure Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000010277 constant-current charging Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004065 semiconductor Substances 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model belongs to the technical field of the charging control, a charging system of constant current control is provided, step down to the voltage source through voltage reducing module to voltage after will stepping down transmits for constant -current control module, and the voltage output after constant -current control module will step down after that charges for the battery, detects the charging voltage that feedback module detected the battery simultaneously, and charges to the battery or stop to charge to the battery according to the charging voltage of battery and the rated voltage control constant -current control module of battery. Realized from this that automatic disconnection charges when the battery is full of to and cross as battery voltage and has guaranteed for the battery carries out constant current charging's effect that the battery is in full voltage state all the time automatically when being less than the setting value, the charging process need not not personnel be intervened simultaneously, the manpower and materials that have significantly reduced, solved current fill electronic control system exist unable realize complete in main charge, and unable realization overvoltage protection and overcharge protection's problem.
Description
Technical field
This utility model belongs to charge control technical field, more particularly to a kind of charging system of current constant control.
Background technology
In recent years, with electric bicycle and the popularization and application of electric motor car, the use of battery is also more and more extensive, therefore
Charging to battery becomes more and more important.And the charging to battery disconnects and charging enters the judgement at moment, it is to ensure battery
Occur without to overcharge or cross and put under-voltage effective measures；If only judge to single voltage, it may appear that battery once fills
After the completion of electricity, (if not carrying out power-off restoration) can not be charged again, it is therefore desirable to which battery charging complete and battery are needed
Charging two states are judged.
In addition, increasing system needs the stand-by power supply using battery as system now, and battery is when long
Between place after can due to electric discharge cause voltage to reduce, conventional way be personnel periodically go action for battery charging, this is too
Labor intensive material resources.Therefore the automatic charging for needing a control circuit to complete battery is managed, and existing charge control system
System cannot realize full recharging, and cannot realize overvoltage protection and overcharge protection.
Therefore, existing charge control system is existed and cannot realize full recharging, and cannot realize overvoltage protection
With the problem for overcharging protection.
Utility model content
The purpose of this utility model is to provide a kind of charging system of current constant control, it is intended to solve existing charge control
System is existed cannot realize full recharging, and cannot realize overvoltage protection and overcharge the problem of protection.
This utility model provides a kind of charging system of current constant control, and the charging system includes：
Voltage reduction module, constant-current control module and detection feedback module；
The input termination voltage source of the voltage reduction module, the output termination constant-current control module of the voltage reduction module
Receiving terminal, the output termination battery of the constant-current control module, the input of the detection feedback module terminates the battery, described
The input of the output termination constant-current control module of detection feedback module；
The voltage reduction module carries out blood pressure lowering to the voltage source, and the voltage after blood pressure lowering is transferred to the current constant control mould
Block；
Voltage output after blood pressure lowering is charged by the constant-current control module to the battery；
The detection feedback module detects the charging voltage of the battery, and the charging voltage according to the battery and described
The rated voltage of battery controls the constant-current control module and the battery is charged or stops charging the battery.
In sum, this utility model provides a kind of charging system of current constant control, and the charging system includes blood pressure lowering mould
Block, constant-current control module and detection feedback module, voltage reduction module carries out blood pressure lowering to voltage source, and the voltage after blood pressure lowering is transmitted
To constant-current control module, then the voltage output after blood pressure lowering is charged the battery by constant-current control module, while detecting feedback module
The charging voltage of detection battery, and constant-current control module is controlled to battery according to the rated voltage of the charging voltage and battery of battery
Charge or stop to charge battery.Thus achieve, and when cell voltage is too low
Automatically the effect of constant-current charge is carried out when setting value for battery, it is ensured that battery is in full voltage state all the time, while charging
Process is intervened without personnel, greatly reduces manpower and materials, solve existing charge control system exist cannot realize it is complete
Recharging, and overvoltage protection cannot be realized and the problem of protection is overcharged.
Description of the drawings
The structural representation of the charging system of the current constant control that Fig. 1 is provided for this utility model embodiment.
The exemplary circuit figure of the charging system of the current constant control that Fig. 2 is provided for this utility model embodiment.
Specific embodiment
In order that the technical problems to be solved in the utility model, technical scheme and beneficial effect become more apparent, below
With reference to drawings and Examples, this utility model is further elaborated.It should be appreciated that described herein be embodied as
Example only to explain this utility model, is not used to limit this utility model.
The charging system of the current constant control that this utility model embodiment is provided, is carried out by the charging voltage to battery 105
Detection, is prevented overvoltage and is overcharged, then realized with constant current by the switching frequency of the audion Q1 in constant-current control module 103
Battery 105 is charged.When charging to battery 105, the voltage of battery 105 constantly rises, and is that protection battery 105 needs to prevent from charging
Voltage occurs more than the rated voltage of battery 105, to avoid the damage of battery 105；In addition to preventing battery 105 from excessively putting
Electricity, needs to reopen charging when 105 voltage of battery is less than certain value.In order to prevent, charging current is excessive to damage charging simultaneously
Device, charging process need charging current is realized being monitored and controlled.
In order to illustrate technical scheme described in the utility model, illustrate below by specific embodiment.
Fig. 1 shows the structure of the charging system of the current constant control that this utility model embodiment is provided, for convenience of description,
The part related to this utility model embodiment is illustrate only, details are as follows：
The charging system of the current constant control includes voltage reduction module 102, constant-current control module 103 and detection feedback module
104。
The input termination voltage source of voltage reduction module 102, the output of voltage reduction module 102 terminate connecing for constant-current control module 103
Receiving end, the output termination battery 105 of constant-current control module 103 detect the input termination battery 105 of feedback module 104, and detection is anti-
The input of the output termination constant-current control module 103 of feedback module 104.
Voltage reduction module 102 carries out blood pressure lowering to voltage source 101, and the voltage after blood pressure lowering is transferred to constant-current control module 103；
Voltage output after blood pressure lowering is charged by constant-current control module 103 to battery 105；
Detection feedback module 104 detects the charging voltage of battery 105, and the charging voltage according to battery 105 and battery 105
Rated voltage control constant-current control module 103 battery 105 is charged or stops charging battery 105.
Used as one embodiment of this utility model, the detection control constant-current control module 103 of feedback module 104 is filled to battery 105
Electricity stops being specially the process that battery 105 charges：
When the charging voltage of battery 105 exceedes the rated voltage of battery 105, the detection output high level of feedback module 104
Signal control constant-current control module stops charging battery 105；
When the charging voltage of battery 105 is less than preset voltage value, the detection output low level signal control of feedback module 104
Constant-current control module 103 charges to battery 105.
Fig. 2 has gone out the exemplary circuit of the charging system of the current constant control of this utility model embodiment offer, for the ease of saying
It is bright, the part related to this utility model embodiment is illustrate only, details are as follows：
Used as one embodiment of this utility model, voltage reduction module 102 includes resistance R6, the first end and second of the resistance R6
End is respectively the input and outfan of voltage reduction module 102.
Used as one embodiment of this utility model, constant-current control module 103 includes：
Current constant control chip U2, optocoupler OC1 and audion Q1；
The input of the luminous source of the optocoupler OC1 is the input of the constant-current control module 103, the optocoupler OC1
Luminous source output head grounding, the transmission ends of the input termination current constant control chip U2 of the light-receiving device of the optocoupler OC1
PHC, the output head grounding of the light-receiving device of the optocoupler OC1, the receiving terminal REC of the current constant control chip U2 and resistance R6
And the colelctor electrode of the audion Q1 connects, control end CTRL of the current constant control chip U2 connects the base of the audion Q1
Pole, the outfan of the transmitting extremely constant-current control module 103 of the audion Q1.In the present embodiment, current constant control core
Piece U2 employs the control chip of model LM3409HV, and certainly, the model of control chip is not construed as limiting, as long as can reach and this reality
Apply the function described in current constant control chip U2 also may be used.
Used as one embodiment of this utility model, detection feedback module 104 includes：
Timers trigger chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1 and electric capacity C2；
The first end of the first end of the resistance R1 and the resistance R3 connects the battery simultaneously, and the second of the resistance R1
Terminate the first end of the resistance R2, the second end ground connection of the resistance R2, the second termination resistance R4 of the resistance R3
First end, the second end ground connection of the resistance R4, the electricity of the first end of the resistance R5 and the timers trigger chip U1
Source VDD meets reference voltage VCC simultaneously, and second end of the resistance R5 is grounded by the electric capacity C1, the timers trigger
The earth terminal GND ground connection of chip U1, the low-threshold-level of the timers trigger chip U1 are compared end TRIG and meet the resistance R1
With the public connecting end of the resistance R2, the outfan OUT of the timers trigger chip U1 is the detection feedback module 104
Outfan, the reset terminal RESET of the timers trigger chip U1 connects the commonly connected of the resistance R5 and electric capacity C1
End, the high threshold level of the timers trigger chip U1 are compared end THRES and connect the public of the resistance R3 and resistance R4
Connection end, the voltage controling end CONT of the timers trigger chip U1 are grounded by the electric capacity C2.In the present embodiment, it is fixed
When device flip chip U1 employ the flip chip of model TLC555CD, certainly, the model of flip chip is not construed as limiting, as long as energy
Reach and also may be used with the function described in the present embodiment timers trigger chip U1.
Used as one embodiment of this utility model, resistance R5 and electric capacity C1 constitutes RC reset circuits, is timers trigger chip
U1 provides sufficiently long resetting time.
As one embodiment of this utility model, the level letter during effect of optocoupler OC1 to timers trigger chip U1 outputs
Number level conversion is carried out, and logic state is once negated.
Used as one embodiment of this utility model, audion Q1 can also be replaced with metal-oxide-semiconductor, as long as can play and this practicality
Function described in new audion Q1.
The operation principle of the charging system of above-mentioned current constant control is illustrated below in conjunction with Fig. 1 and Fig. 2：
In above-mentioned charging system, system is automatically controlled the work of charge circuit and is stopped by the judgement to cell voltage
Only state, realizes automatic charging, to ensure power-supply system all the time in power supply abundance state.
The 104 corresponding circuit of detection feedback module includes a timers trigger chip U1, four variable resistance R1,
R2, R3 and R4, a fixed value resistance R5, two definite values electric capacity C1 and C2, resistance R1 and resistance R2 are charged for adjusting permission
Level threshold, resistance R3 and resistance R4 is that, for adjusting the level threshold forbidden of charging, resistance R5 and electric capacity C1 is as fixed
When device flip chip U1 reset de-twitter circuit, electric capacity C2 is input filter capacitor.
Battery Cross prevention function is described：
It is adjusted by the resistance to resistance R1 and resistance R2 and can sets different low level thresholdings (battery fills automatically
Electric start time level), cell voltage after resistance R1 and resistance R2 carry out partial pressure, the voltage got on resistance R2 with
VCC/3 is compared, and when the voltage on resistance R2 is less than VCC/3, then the outfan OUT outputs of timers trigger chip U1 are low
Level signal, there is upset in state after optocoupler OC1, and the logic level after upset becomes high level signal, in high level
Under the driving of signal, current constant control chip U2 starts working, and audion Q1 is with the switch of certain frequency for control, starts to enter battery
Row constant-current charge.
Over-charging of battery defencive function is described：
It is adjusted by the resistance to resistance R3 and resistance R4 and can sets different high level thresholdings (battery stops filling
Electric moment level), the voltage of battery after resistance R3 and resistance R4 partial pressures, the voltage got on resistance R4 and VCC2/3
It is compared, when voltage is higher than 2VCC/3, then the outfan OUT output high level signals of timers trigger chip U1, pass through
After optocoupler OC1 there is upset in state, and the logic level after upset becomes high level signal, under the driving of low level signal,
Current constant control chip U2 control audion Q1 are closed, and stop charging battery, to protect battery.
Current foldback circuit is described：
When the electric current of voltage source passes through resistance R6, pressure drop can be produced over resistor r 6, by reading resistance R6 two ends
Voltage, is then calculated current current value, and it is poor that this current value is carried out with the demand current value of setting again, further according to measurement
The switching frequency of the control audion Q1 that the difference of value and setting value is come, when voltage difference is timing, the switching frequency of Q1 will be raised, defeated
Go out current reduction；When voltage difference is to bear, the switching frequency of Q1 will be reduced, and output current is raised.It is achieved in carrying out battery
The effect of constant-current charge.
In sum, this utility model embodiment provides a kind of charging system of current constant control, and the charging system includes
Voltage reduction module, constant-current control module and detection feedback module, voltage reduction module carry out blood pressure lowering to voltage source, and by the electricity after blood pressure lowering
Pressure is transferred to constant-current control module, and detection feedback module controls current constant control mould according to the charging voltage outputs level signals of battery
Whether block charges to battery；When the charging voltage of battery exceedes the rated voltage of battery, detection feedback module output high level
Signal control constant-current control module stops charging battery；When the charging voltage of battery is less than preset voltage value, detection feedback
Module output low level signal control constant-current control module charges to battery.Thus achieve to be disconnected when battery is full of automatically and fill
Electricity, and the effect of constant-current charge is carried out automatically when cell voltage is crossed less than setting value for battery, it is ensured that battery is located all the time
In full voltage state, while charging process is intervened without personnel, manpower and materials are greatly reduced, existing charge control is solved
System is existed cannot realize full recharging, and cannot realize overvoltage protection and overcharge the problem of protection.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (4)
1. a kind of charging system of current constant control, it is characterised in that the charging system includes：
Voltage reduction module, constant-current control module and detection feedback module；
The input termination voltage source of the voltage reduction module, the reception of the output termination constant-current control module of the voltage reduction module
End, the output termination battery of the constant-current control module, the input of the detection feedback module terminate the battery, the detection
The input of the output termination constant-current control module of feedback module；
The voltage reduction module carries out blood pressure lowering to the voltage source, and the voltage after blood pressure lowering is transferred to the constant-current control module；
Voltage output after blood pressure lowering is charged by the constant-current control module to the battery；
The detection feedback module detects the charging voltage of the battery, and the charging voltage according to the battery and the battery
Rated voltage control the constant-current control module and the battery charged or is stopped to battery charging.
2. charging system as claimed in claim 1, it is characterised in that the voltage reduction module includes resistance R6, the resistance R6
First end and the second end be respectively the voltage reduction module input and outfan.
3. charging system as claimed in claim 2, it is characterised in that the constant-current control module includes：
Current constant control chip, optocoupler and audion Q1；
The input of the luminous source of the optocoupler is the input of the constant-current control module, the output of the luminous source of the optocoupler
End ground connection, the transmission ends of the input termination current constant control chip of the light-receiving device of the optocoupler, the light-receiving device of the optocoupler
Output head grounding, the receiving terminal of the current constant control chip are connected with the colelctor electrode of the resistance R6 and the audion Q1,
The base stage of the control termination audion Q1 of the current constant control chip, the extremely described constant current control of transmitting of the audion Q1
The outfan of molding block.
4. charging system as claimed in claim 1, it is characterised in that the detection feedback module includes：
Timers trigger chip, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1 and electric capacity C2；
The first end of the resistance R1 connects the battery, second termination of the resistance R1 simultaneously with the first end of the resistance R3
The first end of the resistance R2, the second end ground connection of the resistance R2, the of the second termination resistance R4 of the resistance R3
One end, the second end ground connection of the resistance R4, the first end of the resistance R5 are same with the power end of the timers trigger chip
When connect reference voltage, second end of the resistance R5 is grounded by the electric capacity C1, the earth terminal of the timers trigger chip
Ground connection, the low-threshold-level of the timers trigger chip compare the commonly connected of the termination resistance R1 and resistance R2
End, the outfan of the timers trigger chip are the outfan of the detection feedback module, the timers trigger chip
Reset and terminate the public connecting end of the resistance R5 and electric capacity C1, the high threshold level of the timers trigger chip compares
The public connecting end of the resistance R3 and the resistance R4 is terminated, the voltage controling end of the timers trigger chip is by described
Electric capacity C2 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885389.7U CN206099392U (en) | 2016-08-15 | 2016-08-15 | Charging system of constant current control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885389.7U CN206099392U (en) | 2016-08-15 | 2016-08-15 | Charging system of constant current control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099392U true CN206099392U (en) | 2017-04-12 |
Family
ID=58468418
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620885389.7U Expired - Fee Related CN206099392U (en) | 2016-08-15 | 2016-08-15 | Charging system of constant current control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769277A (en) * | 2016-08-15 | 2018-03-06 | 深圳市朗驰欣创科技股份有限公司 | The charging system and method for a kind of current constant control |
| CN108767941A (en) * | 2018-08-09 | 2018-11-06 | 珠海市华鼎电子科技有限公司 | Wireless charging device, intelligent door lock and system |
-
2016
- 2016-08-15 CN CN201620885389.7U patent/CN206099392U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769277A (en) * | 2016-08-15 | 2018-03-06 | 深圳市朗驰欣创科技股份有限公司 | The charging system and method for a kind of current constant control |
| CN107769277B (en) * | 2016-08-15 | 2024-03-22 | 深圳市朗驰欣创科技股份有限公司 | Constant-current control charging system and method |
| CN108767941A (en) * | 2018-08-09 | 2018-11-06 | 珠海市华鼎电子科技有限公司 | Wireless charging device, intelligent door lock and system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |