CN202513637U - Intelligent charging and voltage stabilizing output circuit - Google Patents
Intelligent charging and voltage stabilizing output circuit Download PDFInfo
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- CN202513637U CN202513637U CN2012201854250U CN201220185425U CN202513637U CN 202513637 U CN202513637 U CN 202513637U CN 2012201854250 U CN2012201854250 U CN 2012201854250U CN 201220185425 U CN201220185425 U CN 201220185425U CN 202513637 U CN202513637 U CN 202513637U
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- ion battery
- lithium ion
- voltage
- stabilizing output
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Abstract
The utility model discloses an intelligent charging and voltage stabilizing output circuit, which comprises a power supply circuit, a control circuit, a lithium-ion battery circuit and a voltage stabilizing output circuit, wherein the power supply circuit supplies power to a control chip circuit, and an output terminal of the control circuit is connected with the lithium-ion battery circuit; and an output terminal of the voltage stabilizing output circuit is connected with an input terminal of the control circuit. According to the intelligent charging and voltage stabilizing output circuit provided by the utility model, the intelligent charging, voltage stabilizing output and over-charge and over-discharge protection of lithium-ion batteries are realized, and the whole circuit has stable performances, and excellent adaptability to the lithium-ion batteries, accordingly, the circuit is favorable for prolonging the life of the lithium-ion batteries, the structure is simple, peripheral components are extremely small, and the applicability is strong. The intelligent charging and voltage stabilizing output circuit can be applied to various lithium ion battery-powered control systems.
Description
Technical field
The utility model is a kind of intelligent charge and voltage-stabilizing output circuit, belongs to lithium ion battery power applications field, particularly lithium ion battery intelligent charge and voltage stabilizing output.
Background technology
At present; The technology of lithium ion battery and technology are quite ripe; Because of replacing traditional Ni-MH battery, button cell rapidly, advantages such as its volume is little, and capacity is big, and is reusable become main power source or stand-by power supply on the control boards such as mobile phone, consumer electronics, household electrical appliances, industry control.But compare with traditional battery, it is more fragile that lithium ion battery seems, overcharges, owe to fill, put excessively etc. all can influence its life-span, even blasts.In order to make lithium ion battery can better be our device service, simultaneously also in order to reach the effect of more energy-conserving and environment-protective, this just need be for it increases control protection electric circuit, technology below the general employing of lithium ion cell charging and output circuit:
1, the simplest control protection electric circuit is that power supply is imported through the rectifier diode isolation, and lithium ion cell charging is given in the voltage stabilizing didoe voltage stabilizing, and lithium ion battery is done the output of supplying power through the rectifier diode isolation, like Fig. 1.This circuit structure is simple, and cost is low, and certain over-charge protective ability is arranged; But can only give lithium ion cell charging with the mode of constant voltage, can not realize the intelligent charge to lithium ion battery according to the actual conditions of lithium ion battery, charging effect is undesirable; Influence the life-span of lithium ion battery, and the voltage of lithium ion battery is not stable, voltage can be high when being full of electricity; Voltage can hang down when owing electricity, and output voltage can not be exported along with the rising of lithium ion battery voltage reduces and the reduction that raises in voltage stabilizing; Can not do to be and put protection, also can influence the life-span of lithium ion battery, can not be as desirable lithium ion battery intelligent charge and voltage-stabilizing output circuit.
2, another kind of comparatively advanced technology is that the power supply input is given lithium ion cell charging through lithium ion battery special charging chip, and lithium ion battery is that late-class circuit provides stabilized voltage power supply through three terminal regulator, like Fig. 2.This circuit can be realized multimode intelligent charges such as constant current, constant voltage, floating charge according to the curve of lithium ion battery self preferably, and can well realize over-charge protective, and battery supply output is through three-terminal voltage-stabilizing pipe voltage stabilizing output, output voltage stabilization.But there is certain power consumption in the three-terminal voltage-stabilizing pipe of this circuit; Can influence the service time of battery for the battery system that has power consumption to require; And the mistake that can not accomplish lithium ion battery is put protection; Still influential to the life-span of lithium ion battery, also have a segment distance from desirable lithium ion battery intelligent charge and voltage-stabilizing output circuit.
In sum, for lithium ion cell charging and output, need be a kind of simple in structure, reliability is high, has to overcharge, cross and put protection, and the circuit of intelligent charge and voltage stabilizing output solves above problem.
Summary of the invention
The purpose of the utility model is to provide simple in structure in order to solve the above-mentioned problem that proposes, and reliability is high, has to overcharge, cross and put protection the circuit of intelligent charge and voltage stabilizing output.
The purpose of the utility model can reach through taking following technical scheme:
A kind of intelligent charge and voltage-stabilizing output circuit comprise power supply circuits, control circuit, lithium ion battery circuit, voltage-stabilizing output circuit; Power supply circuits are to the control chip circuit supply, and the output of control circuit is connected with the lithium ion battery circuit, and the output of voltage-stabilizing output circuit is connected with the input of control circuit.
Said power supply circuits are formed by connecting charge power supply, rectifier diode D1, filter capacitor EC1; The positive pole of charge power supply is connected with the positive pole of rectifier diode D1, and the negative pole of rectifier diode D1 is connected with the positive pole of filter capacitor EC1, the input of control circuit respectively, the equal ground connection of negative pole of the negative pole of charge power supply, filter capacitor EC1.
Said control circuit is by controller, and resistance R 1 is formed by connecting; Controller is through resistance R 1 ground connection; The anodal of the negative pole of rectifier diode D1, filter capacitor EC1 all is connected with controller, and controller is connected with lithium ion battery circuit (3).
The lithium ion battery circuit comprises lithium ion battery BT1 and the filter capacitor C1 that is connected in parallel; The positive pole of lithium ion battery BT1 is connected with controller, the minus earth of lithium ion battery BT1.
Said voltage-stabilizing output circuit comprises energy storage inductor L1, feedback resistance R2, feedback resistance R3, filter capacitor EC2; The end of energy storage inductor L1 is connected with controller, and the other end of energy storage inductor L1 is connected with the end of feedback resistance R3, the positive pole of filter capacitor EC2 respectively; The end of feedback resistance R2 is connected with the other end, the controller of feedback resistance R3 respectively, the equal ground connection of negative pole of the other end of feedback resistance R2, filter capacitor EC2.
The utility model is integrated in a circuit with intelligent charge, voltage stabilizing output and the super-charge super-discharge protection of lithium ion battery, and charge power supply is through the power supply circuits input when needs charge, and the via controller internal algorithm realizes intelligent charge and over-charge protective automatically.When lithium ion battery was the late-class circuit power supply, the reduction although cell voltage can raise with the variation of battery capacity realized voltage stabilizing output automatically through the controller internal control system, and the monitoring battery was to realize putting protection.This circuit performance is stable, fabulous to lithium ion battery adaptability, helps prolonging the life-span of lithium ion battery, and simple in structure, peripheral cell is minimum, applicability is strong, can be applicable to the battery-powered control system of various band lithium-ion electrics.
Description of drawings
Fig. 1 is diode-isolated charging and an output circuit schematic diagram in the prior art;
Fig. 2 is special-purpose charging circuit charging and a three-terminal voltage-stabilizing output circuit schematic diagram in the prior art;
Fig. 3 is a kind of intelligent charge of the utility model and voltage-stabilizing output circuit schematic diagram.
Embodiment
As shown in Figure 3, present embodiment comprises power supply circuits 1, control circuit 2, lithium ion battery circuit 3, voltage-stabilizing output circuit 4; Power supply circuits 1 are to 2 power supplies of control chip circuit, and the output of control circuit 2 is connected with lithium ion battery circuit 3, and the output of voltage-stabilizing output circuit 4 is connected with the input of control circuit 2.
In the present embodiment, power supply circuits 1 are formed by connecting charge power supply, rectifier diode D1, filter capacitor EC1; The positive pole of charge power supply is connected with the positive pole of rectifier diode D1, and the negative pole of rectifier diode D1 is connected with the positive pole of filter capacitor EC1, the input of control circuit 2 respectively, the equal ground connection of negative pole of the negative pole of charge power supply, filter capacitor EC1.
Lithium ion battery circuit 3 comprises lithium ion battery BT1 and the filter capacitor C1 that is connected in parallel; The positive pole of lithium ion battery BT1 is connected the minus earth of lithium ion battery BT1 with 16,17,4 pin of control chip U1.
Voltage-stabilizing output circuit 4 comprises energy storage inductor L1, feedback resistance R2, feedback resistance R3, filter capacitor EC2; The end of energy storage inductor L1 is connected with controller, and the other end of energy storage inductor L1 is connected with the end of feedback resistance R3, the positive pole of filter capacitor EC2 respectively; The end of feedback resistance R2 is connected with the other end, the controller of feedback resistance R3 respectively, the equal ground connection of negative pole of the other end of feedback resistance R2, filter capacitor EC2.
The operation principle of present embodiment: charge power supply is supplied power to system through interface P1; During circuit working; Charge power supply is supplied power to main control chip U1 after the filter capacitor EC1 filtering through rectifier diode D1 rectification, behind the inner BUCK circuit of main control chip U1; Through 16 pin output at main control chip U1; After filter capacitor C1 filtering, give lithium ion battery BT1 charging, realize mode intelligent charge and over-charge protectives such as constant current, constant voltage, floating charge through main control chip U1 internal algorithm, the resistance of transferring R1 according to the capacity of lithium ion battery is can accomplish this process of constant current energising better.Battery is supplied power to main control chip U1 through 17 pin of main control chip U1; Output to energy storage inductor charging L1 through inner BUCK-BOOST circuit through 19 pin of main control chip U1; Back level system power supply after filter capacitor EC2 filtering, output voltage is input to the 2 pin voltage for referencial use of main control chip U1 after feedback resistance R3, R2 dividing potential drop.Output voltage one reaches the set point of feedback resistance; Inner BUCK-BOOST circuit will stop output; Continue power supply by energy storage inductor L1 and inner fly-wheel diode; Output voltage is lower than the set point of feedback resistance, and inner BUCK-BOOST circuit will start and output voltage once more, reaches the effect of voltage stabilizing output.Be lower than set point as long as detect the voltage of lithium ion battery, inner BUCK-BOOST circuit will stop output, puts protection to reach well to cross.After lithium ion battery was full of electricity, the inner BUCK circuit of main control chip U1 quit work at once when removing charge power supply, and to save unnecessary power consumption, inner BUCK-BOOST circuit also works on, and continues as late-class circuit burning voltage output is provided.
More than a kind of intelligent charge and voltage-stabilizing output circuit that the utility model provided have been carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (5)
1. intelligent charge and voltage-stabilizing output circuit is characterized in that comprising power supply circuits (1), control circuit (2), lithium ion battery circuit (3), voltage-stabilizing output circuit (4); Power supply circuits (1) are to control chip circuit (2) power supply, and the output of control circuit (2) is connected with lithium ion battery circuit (3), and the output of voltage-stabilizing output circuit (4) is connected with the input of control circuit (2).
2. according to said intelligent charge of claim 1 and voltage-stabilizing output circuit, it is characterized in that said power supply circuits (1) are formed by connecting charge power supply, rectifier diode D1, filter capacitor EC1; The positive pole of charge power supply is connected with the positive pole of rectifier diode D1, and the negative pole of rectifier diode D1 is connected with the positive pole of filter capacitor EC1, the input of control circuit (2) respectively, the equal ground connection of negative pole of the negative pole of charge power supply, filter capacitor EC1.
3. according to said intelligent charge of claim 1 and voltage-stabilizing output circuit, it is characterized in that said control circuit (2), detect resistance R 1 and be formed by connecting by controller; Controller is through detecting resistance R 1 ground connection; The anodal of the negative pole of rectifier diode D1, filter capacitor EC1 all is connected with controller, and controller is connected with lithium ion battery circuit (3).
4. according to said intelligent charge of claim 1 and voltage-stabilizing output circuit, it is characterized in that said lithium ion battery circuit (3) comprises lithium ion battery BT1 and the filter capacitor C1 that is connected in parallel; The positive pole of lithium ion battery BT1 is connected with controller, the minus earth of lithium ion battery BT1.
5. according to said intelligent charge of claim 1 and voltage-stabilizing output circuit, it is characterized in that said voltage-stabilizing output circuit (4) comprises energy storage inductor L1, feedback resistance R2, feedback resistance R3, filter capacitor EC2; The end of energy storage inductor L1 is connected with controller, and the other end of energy storage inductor L1 is connected with the end of feedback resistance R3, the positive pole of filter capacitor EC2 respectively; The end of feedback resistance R2 is connected with the other end, the controller of feedback resistance R3 respectively, the equal ground connection of negative pole of the other end of feedback resistance R2, filter capacitor EC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201854250U CN202513637U (en) | 2012-04-27 | 2012-04-27 | Intelligent charging and voltage stabilizing output circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201854250U CN202513637U (en) | 2012-04-27 | 2012-04-27 | Intelligent charging and voltage stabilizing output circuit |
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| CN202513637U true CN202513637U (en) | 2012-10-31 |
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| CN2012201854250U Expired - Fee Related CN202513637U (en) | 2012-04-27 | 2012-04-27 | Intelligent charging and voltage stabilizing output circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270278A (en) * | 2017-01-03 | 2018-07-10 | 宁波市华谦电子有限公司 | 20 tunnels export vehicle intelligent charging circuit |
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2012
- 2012-04-27 CN CN2012201854250U patent/CN202513637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270278A (en) * | 2017-01-03 | 2018-07-10 | 宁波市华谦电子有限公司 | 20 tunnels export vehicle intelligent charging circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., Free format text: FORMER NAME: FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528300 Shunde, Guangdong, Daliang Industrial Park, Fengxiang, Xiang Xiang Road, No. 1 Patentee after: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., LTD. Address before: 528300 Shunde, Guangdong, Daliang Industrial Park, Fengxiang, Xiang Xiang Road, No. 1 Patentee before: Foshan Shunde Realdesign Electronics Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20170427 |