CN203827042U - High-precision modularized charging control unit - Google Patents
High-precision modularized charging control unit Download PDFInfo
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- CN203827042U CN203827042U CN201420246762.5U CN201420246762U CN203827042U CN 203827042 U CN203827042 U CN 203827042U CN 201420246762 U CN201420246762 U CN 201420246762U CN 203827042 U CN203827042 U CN 203827042U
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- precision
- sampling signal
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- 238000005070 sampling Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a high-precision modularized charging control unit. According to the high-precision modularized charging control unit, DC power is supplied by an auxiliary power source after AC/DC conversion for a control unit; a current sampling signal is transmitted by a sampling circuit to a first-order amplifier, the amplified current sampling signal is inputted by the first-order amplifier to a digital comparison circuit of a control module, a high-level driving voltage is outputted by the digital comparison circuit through a comparator to the control module, and a voltage control module is connected with the control module and a main power supply voltage feedback circuit; the current sampling signal amplified by the first-order amplifier is received by a function switching circuit, and a function indicating circuit is controlled through turning switching of the circuit. The high-precision modularized charging control unit has advantages of adjustable charging current, simple circuit, high precision and fully-charged indication.
Description
Technical field
The utility model relates to a kind of for having the Auxiliary Control Element of electronic equipment of charging requirement, specifically, is a kind of high accuracy modularization charging control unit.
Background technology
In recent years, because rechargeable battery meets the requirement of portable type electronic product in small-sized, lightweight and service time of long side, the portable type electronic product that is representative from mobile phone and PDA etc., all starts to adopt in a large number rechargeable battery to notebook, VTR etc.But, because rechargeable battery need to use high accuracy charging control circuit, and most charging circuit all adopts one-level operational amplifier to compare to control the feedback network of main circuit in traditional design, and the current sampling signal requiring in traditional design is higher, cause output voltage loss larger, sampled signal and reference voltage differ more in addition, and the more difficult control of the regulation of electrical circuit, exists the shortcomings such as temperature drift is large.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of being mainly used in that charger charging is controlled and required in the electric current auxiliary control circuit of high electronic equipment, and have that charging current is adjustable, circuit is simple, precision is high, have the novel high-precision modularization charging control unit that is full of the features such as instruction.
The purpose of this utility model is achieved in that a kind of high accuracy modularization charging control unit, comprises accessory power supply, amplifier module, and control module, Fumction display module, described amplifier module comprises sample circuit and one-level amplifier; Described control module comprises digital comparator, voltage control module; Accessory power supply carries out after AC/DC conversion as control unit provides direct current supply; Current sampling signal is transferred to one-level amplifier by sample circuit, one-level amplifier is by the digital comparator of the current sampling signal input control module after amplifying, digital comparator is exported high-order driving voltage control module by comparator, voltage control module link control module and main supply power voltage feedback circuit; Described Fumction display module is made up of function commutation circuit and function indicating circuit, and function commutation circuit receives the circuit sampling signal after one-level amplifier amplifies, by function indicating circuit described in the upset switching controls of circuit.
Described voltage control module adopts optical coupler U2 to connect described control unit and main supply power voltage feedback circuit.
Described function indicating circuit is circumscribed with LED light.Described control unit adopts the integrated circuit LM324 of built-in four groups of operation independent unit.
The utility model has the advantage of: (1), for several shortcomings of conventional method, has carried out brand-new design and perfect.Thereby effectively avoided current sampling voltage high, pressure drop is large, low precision, the shortcomings such as poor anti jamming capability, have charging current adjustable, and circuit is simple, and precision is high, has charging instruction texts, has effectively improved control precision and reliability, function admirable.
(2) simple circuit, working stability: adopt basic separate piece composition, the Time Duration Error of whole circuit is very capable, and the value of the corresponding device that only need calculate by former design theory assembles, and can meet the requirement of technical indicator.This circuit has higher Ability of Resisting Disturbance simultaneously, and work that can be stable, can pass through the fine setting to divider resistance, completes the adjustment to charged electrical flow point.
(3) applied widely: do not need independently accessory power supply, groundwork state is not subject to the impact of rear class equipment.Meanwhile, can pass through the simple adjustment to control circuit, charge point is arranged arbitrarily, assist control for the electric current of the electronic equipment with charger charging requirement; Not only can be used in charger charging circuit, also can, for constant-current circuit after adjusting, greatly widen application.
Brief description of the drawings
Accompanying drawing 1 is the utility model theory diagram;
Accompanying drawing 2 is the utility model circuit diagram
Accompanying drawing 3 is the utility model charging circuit job applications schematic diagram;
Accompanying drawing 4 is the utility model constant-current circuit job applications schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
The utility model operation principle is: accessory power supply part is mainly to carry out AC/DC to be transformed to control circuit direct current supply is provided; Amplifier part is sent into rear class analysis circuit by current sampling signal after one-level is amplified, and can greatly increase antijamming capability by amplifying, and more makes late-class circuit be more convenient for adjusting; Current sampling signal after numeral rating unit amplifies previous stage and the reference voltage after dividing potential drop compare, and in the time that sampling current reaches preset value, comparator is exported high-order driving voltage controlling circuit, adjusts accordingly, and reaches constant current charge object; Voltage control part mainly plays the isolation connection function between control unit and main supply power voltage feedback circuit; Function switching part is divided and the common composition function display circuit of function indicating section, wherein commutation circuit is that the current sampling signal after one-level is amplified is compared in the time that electric current reaches preset value with switching preset value equally, and circuit operation overturns to switch also externally provides corresponding index signal.
As shown in Figure 2, integrated circuit LM324 is the operational amplifier of four groups of arithmetic elements of built-in independence, for core devices of the present utility model, wherein amplifier arithmetic element plays the amplification of amplifier part, multiplication factor A=1+R2/R3=1+39K/1.5K=27(is doubly), if electric current adopts signal controlling at 100mV, after amplifying, export comparative voltage and be about between 2.7V, therefore reduce output sampling pressure drop, greatly improve antijamming capability simultaneously; Voltage control module arithmetic element is previous stage amplified signal, and the reference voltage providing with the bleeder circuit of the components and parts composition such as R5, D1, Rx2 and R10 compares, by electric current preset value can be easily set the adjustment of Rx2; Components and parts composition function switching part and the function indicating sections such as Fumction display module arithmetic unit and Q1, D2, R9, Rx1, R13, R14 and R15, by can arranging charging instruction and being full of instruction switching point preset value to the adjustment of Rx1; Photoelectrical coupler U2 is as the isolation connection function between this control module and main supply power voltage feedback circuit.
The utility model is not only used in charger charging circuit, also can be in constant-current circuit through suitable adjustment.
Finally it should be noted that: obviously, above-described embodiment is only for the application's example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all execution modes.And the apparent variation of being amplified out thus or variation are still among the protection range in the application's type.
Claims (4)
1. a high accuracy modularization charging control unit, comprises accessory power supply, amplifier module, and control module, Fumction display module, its feature is being, described amplifier module comprises sample circuit and one-level amplifier; Described control module comprises digital comparator, voltage control module; Accessory power supply carries out after AC/DC conversion as control unit provides direct current supply; Current sampling signal is transferred to one-level amplifier by sample circuit, one-level amplifier is by the digital comparator of the current sampling signal input control module after amplifying, digital comparator is exported high-order driving voltage control module by comparator, voltage control module link control module and main supply power voltage feedback circuit; Described Fumction display module is made up of function commutation circuit and function indicating circuit, and function commutation circuit receives the circuit sampling signal after one-level amplifier amplifies, by function indicating circuit described in the upset switching controls of circuit.
2. high accuracy modularization charging control unit according to claim 1, is characterized in that, described voltage control module adopts optical coupler U2 to connect described control unit and main supply power voltage feedback circuit.
3. high accuracy modularization charging control unit according to claim 1 and 2, is characterized in that, described function indicating circuit is circumscribed with LED light.
4. high accuracy modularization charging control unit according to claim 1 and 2, is characterized in that, described control unit adopts the integrated circuit LM324 of built-in four groups of operation independent unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246762.5U CN203827042U (en) | 2014-05-15 | 2014-05-15 | High-precision modularized charging control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246762.5U CN203827042U (en) | 2014-05-15 | 2014-05-15 | High-precision modularized charging control unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827042U true CN203827042U (en) | 2014-09-10 |
Family
ID=51482503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246762.5U Expired - Lifetime CN203827042U (en) | 2014-05-15 | 2014-05-15 | High-precision modularized charging control unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539024A (en) * | 2015-01-21 | 2015-04-22 | 航天长峰朝阳电源有限公司 | Charging control circuit adopting automatic shutdown technology |
-
2014
- 2014-05-15 CN CN201420246762.5U patent/CN203827042U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539024A (en) * | 2015-01-21 | 2015-04-22 | 航天长峰朝阳电源有限公司 | Charging control circuit adopting automatic shutdown technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |