CN205051407U - Lithium batteries protects controller - Google Patents
Lithium batteries protects controller Download PDFInfo
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- CN205051407U CN205051407U CN201520754707.1U CN201520754707U CN205051407U CN 205051407 U CN205051407 U CN 205051407U CN 201520754707 U CN201520754707 U CN 201520754707U CN 205051407 U CN205051407 U CN 205051407U
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- rectifier bridge
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Abstract
The utility model discloses a lithium batteries protects controller, including switch S1, transformer W, rectifier bridge T and chip U1, the 220V alternating current is connected to switch S1's one end, and transformer W's winding N1 is connected to switch S1's the other end, the other end of the 220V alternating current that transformer W's winding N1's the other end is connected, and the port 1 that rectifier bridge T is connected to transformer W's winding N2's one end restraines diode DW with transient voltage. The utility model discloses lithium batteries protects controller circuit structure is simple, components and parts are few, utilizes two controllable accurate steady voltage sources of three -terminal as voltage and current detection switch element, can effectively prevent the excessive pressure in the charging process and overflow the phenomenon, has simultaneously still set up grid fluctuation suppression component at the mains side, has consequently that the cost of manufacture is low, an advantage of convenient to use and stable performance.
Description
Technical field
The utility model relates to a kind of charge protection controller, specifically a kind of lithium cell charging protection controller.
Background technology
Lithium battery is because have long service life, stable performance and the little advantage of volume, be widely used in mobile phone, as energy-storage travelling wave tube in the mobile devices such as panel computer, but the most function singleness of its charger, the function of charger directly determines the useful life of lithium battery, the most price of intelligent charger is in the market high, and cheap charger only has simple voltage conversion function, be easy to the overshoot phenomenon causing lithium battery, affect its useful life, and the output voltage of most of charger changes by the impact of power network fluctuation, thus generation voltage fluctuation, affect charge stability.
Utility model content
The purpose of this utility model is to provide a kind of lithium cell charging protection controller, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of lithium cell charging protection controller, comprise switch S 1, transformer W, rectifier bridge T and chip U1, one end of described switch S 1 connects 220V alternating current, the winding N1 of the other end connection transformer W of switch S 1, the other end of the 220V alternating current of the other end connection of the winding N1 of transformer W, one end of the winding N2 of transformer W connects port one and the transient voltage suppressor diode DW of rectifier bridge T, the other end of the winding N2 of transformer W connects the port 3 of rectifier bridge T and the other end of transient voltage suppressor diode DW, the port 2 contact resistance R3 of rectifier bridge T, electric capacity C1, the collector electrode of triode V1 and the collector electrode of triode V2, the other end of resistance R3 connects the pin 1 of chip U1, the pin 1 of chip U2 and the base stage of triode V1, the other end contact resistance R2 of electric capacity C1, the negative pole of lithium battery E, the pin 3 of chip U1, the port 4 of voltmeter V and rectifier bridge T, the pin 2 contact resistance R1 of chip U1 and the other end of resistance R2, the other end contact resistance R4 of resistance R1, resistance R5, the other end of voltmeter V, the pin 3 of ammeter A and chip U2, the other end of pin 2 contact resistance R4 of chip U2 and the emitter of triode V2, the base stage of the emitter connecting triode V2 of triode V1, the other end of other end contact resistance R5 of ammeter A and the positive pole of lithium battery E, the model of described chip U1 and chip U2 is TL431.
As preferred version of the present utility model: the model of described transient voltage suppressor diode DW is SMAJ7.0A.
As preferred version of the present utility model: described resistance R1 is variable resistor.
Compared with prior art; the beneficial effects of the utility model are: the utility model lithium cell charging protection controller circuit structure is simple, components and parts are few; utilize two three end controllable accurate source of stable pressure as voltage and current sense switch element; effectively can prevent the overvoltage in charging process and over-current phenomenon avoidance; also be provided with power network fluctuation suppression element at mains side simultaneously, therefore there is the advantage of low, the easy to use and stable performance of cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of lithium cell charging protection controller.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of lithium cell charging protection controller, comprise switch S 1, transformer W, rectifier bridge T and chip U1, one end of described switch S 1 connects 220V alternating current, the winding N1 of the other end connection transformer W of switch S 1, the other end of the 220V alternating current of the other end connection of the winding N1 of transformer W, one end of the winding N2 of transformer W connects port one and the transient voltage suppressor diode DW of rectifier bridge T, the other end of the winding N2 of transformer W connects the port 3 of rectifier bridge T and the other end of transient voltage suppressor diode DW, the port 2 contact resistance R3 of rectifier bridge T, electric capacity C1, the collector electrode of triode V1 and the collector electrode of triode V2, the other end of resistance R3 connects the pin 1 of chip U1, the pin 1 of chip U2 and the base stage of triode V1, the other end contact resistance R2 of electric capacity C1, the negative pole of lithium battery E, the pin 3 of chip U1, the port 4 of voltmeter V and rectifier bridge T, the pin 2 contact resistance R1 of chip U1 and the other end of resistance R2, the other end contact resistance R4 of resistance R1, resistance R5, the other end of voltmeter V, the pin 3 of ammeter A and chip U2, the other end of pin 2 contact resistance R4 of chip U2 and the emitter of triode V2, the base stage of the emitter connecting triode V2 of triode V1, the other end of other end contact resistance R5 of ammeter A and the positive pole of lithium battery E, the model of described chip U1 and chip U2 is TL431.
The model of transient voltage suppressor diode DW is SMAJ7.0A.Resistance R1 is variable resistor.
Operation principle of the present utility model is: whole circuit is divided into power module, detection module and charging module three part, power module comprises transformer W, rectifier bridge T, transient voltage suppressor diode DW and filter capacitor C1, after Closing Switch S1, 220V line voltage is through transformer W, galvanic current is become after rectifier bridge T rectification and electric capacity C1 filtering, transient voltage suppressor diode DW in circuit can eliminate the peak voltage that city's electro-mechanical wave produces, detection module is by three end controllable accurate source of stable pressure U1 ~ U2, triode V1, the element compositions such as triode V2, wherein three end controllable accurate source of stable pressure U2 are for detecting voltage, three end controllable accurate source of stable pressure U2 are for detecting electric current, under charging normal situation, voltage and current data all remain in normal range (NR), once occur extremely causing charging current to increase, the base stage of triode V1 is added in after three end controllable accurate source of stable pressure U2 inside are amplified, the emitter current of triode V2 is reduced, reach the object of overcurrent protection, when in circuit, voltage rising exceeds critical value, be added in after variable resistor R1 dividing potential drop three end controllable accurate source of stable pressure U1 reference and, the base stage of triode V1 is added in after U1 inside is amplified, the emitter voltage of V2 is reduced, thus reach the object preventing overvoltage, ammeter A in circuit and voltmeter V is respectively used to the charging current and the voltage that indicate lithium battery, to people's visual indication, circuit structure is simple, components and parts are few, utilize two three end controllable accurate source of stable pressure as voltage and current sense switch element, effectively can prevent the overvoltage in charging process and over-current phenomenon avoidance, also be provided with power network fluctuation suppression element at mains side simultaneously, therefore there is cost of manufacture low, the advantage of easy to use and stable performance.
Claims (3)
1. a lithium cell charging protection controller, comprise switch S 1, transformer W, rectifier bridge T and chip U1, it is characterized in that, one end of described switch S 1 connects 220V alternating current, the winding N1 of the other end connection transformer W of switch S 1, the other end of the 220V alternating current of the other end connection of the winding N1 of transformer W, one end of the winding N2 of transformer W connects port one and the transient voltage suppressor diode DW of rectifier bridge T, the other end of the winding N2 of transformer W connects the port 3 of rectifier bridge T and the other end of transient voltage suppressor diode DW, the port 2 contact resistance R3 of rectifier bridge T, electric capacity C1, the collector electrode of triode V1 and the collector electrode of triode V2, the other end of resistance R3 connects the pin 1 of chip U1, the pin 1 of chip U2 and the base stage of triode V1, the other end contact resistance R2 of electric capacity C1, the negative pole of lithium battery E, the pin 3 of chip U1, the port 4 of voltmeter V and rectifier bridge T, the pin 2 contact resistance R1 of chip U1 and the other end of resistance R2, the other end contact resistance R4 of resistance R1, resistance R5, the other end of voltmeter V, the pin 3 of ammeter A and chip U2, the other end of pin 2 contact resistance R4 of chip U2 and the emitter of triode V2, the base stage of the emitter connecting triode V2 of triode V1, the other end of other end contact resistance R5 of ammeter A and the positive pole of lithium battery E, the model of described chip U1 and chip U2 is TL431.
2. a kind of lithium cell charging protection controller according to claim 1, is characterized in that, the model of described transient voltage suppressor diode DW is SMAJ7.0A.
3. a kind of lithium cell charging protection controller according to claim 1, is characterized in that, described resistance R1 is variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754707.1U CN205051407U (en) | 2015-09-25 | 2015-09-25 | Lithium batteries protects controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754707.1U CN205051407U (en) | 2015-09-25 | 2015-09-25 | Lithium batteries protects controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205051407U true CN205051407U (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520754707.1U Expired - Fee Related CN205051407U (en) | 2015-09-25 | 2015-09-25 | Lithium batteries protects controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205051407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532630A (en) * | 2016-12-27 | 2017-03-22 | 郑州诚合信息技术有限公司 | Voltage protection circuit of computer display |
| CN107887964A (en) * | 2017-11-29 | 2018-04-06 | 国网河南省电力公司社旗县供电公司 | A kind of adjustable charger circuit of voltage |
-
2015
- 2015-09-25 CN CN201520754707.1U patent/CN205051407U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532630A (en) * | 2016-12-27 | 2017-03-22 | 郑州诚合信息技术有限公司 | Voltage protection circuit of computer display |
| CN107887964A (en) * | 2017-11-29 | 2018-04-06 | 国网河南省电力公司社旗县供电公司 | A kind of adjustable charger circuit of voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160224 Termination date: 20190925 |