CN204835572U - Mobile phone lithium battery control panel of constant current constant voltage - Google Patents
Mobile phone lithium battery control panel of constant current constant voltage Download PDFInfo
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- CN204835572U CN204835572U CN201520457583.0U CN201520457583U CN204835572U CN 204835572 U CN204835572 U CN 204835572U CN 201520457583 U CN201520457583 U CN 201520457583U CN 204835572 U CN204835572 U CN 204835572U
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Abstract
The utility model discloses a mobile phone lithium battery control panel of constant current constant voltage, adjustable constant voltage circuit connection lithium cell, adjustable constant voltage circuit is parallelly connected with adjustable voltage stabilizing circuit, adjustable voltage stabilizing circuit and charge indication circuit series connection. The utility model discloses in the lithium cell control panel circuit, adopt accurate adjustable voltage stabilizing circuit, adjustable constant current circuit, the three circuit of charge indication circuit to lithium cell protection, along with being risen gradually by rechargeable lithium -ion battery voltage, charging current will reduces gradually, treats that the pressure drop that the battery is full of on the resistance R4 of back constantly reduces, finally make PNP type triode Q3 by, LED goes out, in order to guarantee that the battery energy sufficiently, continue to charge 1-2 hour after the pilot lamp goes out. The utility model discloses the more accurate efficient of lithium cell control panel has improved the harmonious of lithium cell and has prolonged lithium cell cycle life.
Description
Technical field
The utility model relates to mobile phone accessories field, relates to a kind of cellular li-ion battery control board of constant current constant voltage specifically.
Background technology
Lithium ion battery in use easily occurs that some are abnormal, as overcharged, crossing and putting phenomenon; If there is overcharging, battery can bulging, may on fire or blast time serious; If there is overdischarge, gently then shorten battery, heavy then thoroughly lose charging/discharging function make battery permanent failure.
Current lithium ion battery have coordinate overcharge, over-discharge protection circuit, only cross put after cut off the power supply of battery to load, but without any warning when in use there is other problems, be unfavorable for the improvement of battery quality.
Therefore, traditional lithium battery control board circuit structure needs to improve.
Utility model content
For deficiency of the prior art, the technical problems to be solved in the utility model there are provided a kind of cellular li-ion battery control board of constant current constant voltage.
For solving the problems of the technologies described above, the utility model is realized by following scheme: a kind of cellular li-ion battery control board of constant current constant voltage, and this lithium battery control board comprises:
By NPN type triode Q1, resistance R1, potentiometer W1, voltage stabilizing didoe TL431 form surely adjustable
Volt circuit;
The adjustable constant voltage circuit be made up of PNP type triode Q2, potentiometer W2, resistance R2;
The charging indication be made up of PNP type triode Q3, resistance R3, resistance R4, resistance R5, LED;
Described adjustable constant voltage circuit connects lithium battery;
Described adjustable constant voltage circuit is in parallel with adjustable voltage stabilizing circuit;
Described adjustable voltage stabilizing circuit is connected with charging indication.
Further, in described adjustable voltage stabilizing circuit, the base stage of NPN type triode Q1, the two ends of collector electrode electric connection resistance R1, the positive terminal of the resistive element of the emitter electrical connection potentiometer W1 of NPN type triode Q1, the reference pole of described potentiometer W1 brush end electrical connection voltage stabilizing didoe TL431, the resistive element negative pole end electrical connection cathode of lithium battery end of described potentiometer W1, the anode electrical connection cathode of lithium battery end of described voltage stabilizing didoe TL431, cathodic electricity connects the base stage of NPN type triode Q1.
Further, in adjustable constant voltage circuit, the emitter of the emitter electrical connection NPN type triode Q1 of described PNP type triode Q2, collector electrode electrical connection lithium battery anode end, the brush end contact resistance body positive terminal of described potentiometer W2, forms adjustable resistance, the positive terminal of the base stage electrical connection potentiometer W2 of described PNP type triode Q2, the negative pole end electric connection resistance R2 of described potentiometer W2, described resistance R2 is electrically connected cathode of lithium battery end.
Further, in charging indication, PNP type triode Q3 emitter electric connection resistance R4, collector electrode electric connection resistance R5, base stage electric connection resistance R3, the collector electrode of the other end electrical connection NPN type triode Q1 of described resistance R4, the collector electrode of the other end electrical connection NPN type triode Q1 of the other end electrical connection LED, the described resistance R3 of described resistance R5.
Further, the resistance of described resistance R1, R2, R3, R5 be 1 kilo-ohm respectively, 200 Europe, 100 Europe, 200 Europe.
The all-in resistance of the resistive element of described potentiometer W1, potentiometer W2 is 20 kilo-ohms, 2 kilo-ohms respectively.
Relative to prior art; the beneficial effects of the utility model are: in the utility model lithium battery control board circuit; accurate adjustable voltage stabilizing circuit, adjustable constant-flow circuit, charging indication three circuit are adopted to protect lithium battery; rise gradually along with by charged lithium cells voltage; charging current will reduce gradually; pressure drop after battery is full of on resistance R4 constantly reduces; finally make PNP type triode Q3 by; LED extinguishes; in order to ensure that battery can be sufficient, charging 1 ~ 2 hour to be continued after indicator light extinguishes.The utility model lithium battery control board more accurately improves the harmony of lithium battery efficiently and extends lithium battery cycle life.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model lithium battery control board circuit diagram.
Mark in accompanying drawing: lithium battery 1; Adjustable voltage stabilizing circuit 2; Adjustable constant voltage circuit 3; Charging indication 4.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Please refer to accompanying drawing 1, the cellular li-ion battery control board of a kind of constant current constant voltage of the present utility model, is characterized in that, this lithium battery control board comprises: the adjustable voltage stabilizing circuit 2 be made up of NPN type triode Q1, resistance R1, potentiometer W1, voltage stabilizing didoe TL431; The adjustable constant voltage circuit 3 be made up of PNP type triode Q2, potentiometer W2, resistance R2; The charging indication 4 be made up of PNP type triode Q3, resistance R3, resistance R4, resistance R5, LED; Described adjustable constant voltage circuit 3 connects lithium battery 1; Described adjustable constant voltage circuit 3 is in parallel with adjustable voltage stabilizing circuit 2; Described adjustable voltage stabilizing circuit 2 is connected with charging indication 4.In described adjustable voltage stabilizing circuit 2, the base stage of NPN type triode Q1, the two ends of collector electrode electric connection resistance R1, the positive terminal of the resistive element of the emitter electrical connection potentiometer W1 of NPN type triode Q1, the reference pole of described potentiometer W1 brush end electrical connection voltage stabilizing didoe TL431, resistive element negative pole end electrical connection lithium battery 1 negative pole end of described potentiometer W1, anode electrical connection lithium battery 1 negative pole end of described voltage stabilizing didoe TL431, cathodic electricity connects the base stage of NPN type triode Q1.In adjustable constant voltage circuit 3 circuit, the emitter of the emitter electrical connection NPN type triode Q1 of described PNP type triode Q2, collector electrode electrical connection lithium battery 1 positive terminal, the brush end contact resistance body positive terminal of described potentiometer W2, form adjustable resistance, the positive terminal of the base stage electrical connection potentiometer W2 of described PNP type triode Q2, the negative pole end electric connection resistance R2 of described potentiometer W2, described resistance R2 is electrically connected lithium battery 1 negative pole end.In charging indication 4, PNP type triode Q3 emitter electric connection resistance R4, collector electrode electric connection resistance R5, base stage electric connection resistance R3, the collector electrode of the other end electrical connection NPN type triode Q1 of described resistance R4, the collector electrode of the other end electrical connection NPN type triode Q1 of the other end electrical connection LED, the described resistance R3 of described resistance R5.
As shown in Figure 1, the resistance of described resistance R1, R2, R3, R5 is 1 kilo-ohm respectively, 200 Europe, 100 Europe, 200 Europe, the all-in resistance of the resistive element of described potentiometer W1, potentiometer W2 is 20 kilo-ohms, 2 kilo-ohms respectively.
As shown in Figure 1, rise gradually along with by charged lithium cells 1 voltage, charging current will reduce gradually, pressure drop after battery is full of on resistance R4 constantly reduces, and finally makes PNP type triode Q3Q3 extinguish by, LED, in order to ensure that battery can be sufficient, LED light needs after extinguishing to continue charging 1 ~ 2 hour, during use, can fill the fin of suitable size at PNP type triode Q2, PNP type triode Q3.
The foregoing is only preferred implementation of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (6)
1. a cellular li-ion battery control board for constant current constant voltage, is characterized in that, this lithium battery control board comprises:
By NPN type triode Q1, resistance R1, potentiometer W1, voltage stabilizing didoe TL431 form surely adjustable
Volt circuit (2);
The adjustable constant voltage circuit (3) be made up of PNP type triode Q2, potentiometer W2, resistance R2;
The charging indication (4) be made up of PNP type triode Q3, resistance R3, resistance R4, resistance R5, LED;
Described adjustable constant voltage circuit (3) connects lithium battery (1);
Described adjustable constant voltage circuit (3) is in parallel with adjustable voltage stabilizing circuit (2);
Described adjustable voltage stabilizing circuit (2) is connected with charging indication (4).
2. the cellular li-ion battery control board of a kind of constant current constant voltage according to claim 1, it is characterized in that: in described adjustable voltage stabilizing circuit (2), the base stage of NPN type triode Q1, the two ends of collector electrode electric connection resistance R1, the positive terminal of the resistive element of the emitter electrical connection potentiometer W1 of NPN type triode Q1, the reference pole of described potentiometer W1 brush end electrical connection voltage stabilizing didoe TL431, resistive element negative pole end electrical connection lithium battery (1) negative pole end of described potentiometer W1, anode electrical connection lithium battery (1) negative pole end of described voltage stabilizing didoe TL431, cathodic electricity connects the base stage of NPN type triode Q1.
3. the cellular li-ion battery control board of a kind of constant current constant voltage according to claim 1, it is characterized in that: in adjustable constant voltage circuit (3) circuit, the emitter of the emitter electrical connection NPN type triode Q1 of described PNP type triode Q2, collector electrode electrical connection lithium battery (1) positive terminal, the brush end contact resistance body positive terminal of described potentiometer W2, form adjustable resistance, the positive terminal of the base stage electrical connection potentiometer W2 of described PNP type triode Q2, the negative pole end electric connection resistance R2 of described potentiometer W2, described resistance R2 is electrically connected lithium battery (1) negative pole end.
4. the cellular li-ion battery control board of a kind of constant current constant voltage according to claim 1, it is characterized in that: in charging indication (4), PNP type triode Q3 emitter electric connection resistance R4, collector electrode electric connection resistance R5, base stage electric connection resistance R3, the collector electrode of the other end electrical connection NPN type triode Q1 of described resistance R4, the collector electrode of the other end electrical connection NPN type triode Q1 of the other end electrical connection LED, the described resistance R3 of described resistance R5.
5. the cellular li-ion battery control board of a kind of constant current constant voltage according to claim 1, is characterized in that: the resistance of described resistance R1, R2, R3, R5 is 1 kilo-ohm respectively, 200 Europe, 100 Europe, 200 Europe.
6. the cellular li-ion battery control board of a kind of constant current constant voltage according to claim 1, is characterized in that: the all-in resistance of the resistive element of described potentiometer W1, potentiometer W2 is 20 kilo-ohms, 2 kilo-ohms respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457583.0U CN204835572U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery control panel of constant current constant voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457583.0U CN204835572U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery control panel of constant current constant voltage |
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| Publication Number | Publication Date |
|---|---|
| CN204835572U true CN204835572U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520457583.0U Expired - Fee Related CN204835572U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery control panel of constant current constant voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786448A (en) * | 2020-07-06 | 2020-10-16 | 苏州微著设备诊断技术有限公司 | Signal energy collecting circuit of magnetoelectric wheel speed sensor |
-
2015
- 2015-06-30 CN CN201520457583.0U patent/CN204835572U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786448A (en) * | 2020-07-06 | 2020-10-16 | 苏州微著设备诊断技术有限公司 | Signal energy collecting circuit of magnetoelectric wheel speed sensor |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 building B2, building, Fumin Industrial Zone, Fu Shui street, Guangdong, Shenzhen, China Patentee after: Shenzhen Hai Tong Tong Electronic Limited by Share Ltd Address before: 518000 building B2, building, Fumin Industrial Zone, Fu Shui street, Guangdong, Shenzhen, China Patentee before: Hi-Chipcom Electronics 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: 20151202 Termination date: 20200630 |