CN202939288U - Storage battery electric quantity detection circuit - Google Patents
Storage battery electric quantity detection circuit Download PDFInfo
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- CN202939288U CN202939288U CN 201220534879 CN201220534879U CN202939288U CN 202939288 U CN202939288 U CN 202939288U CN 201220534879 CN201220534879 CN 201220534879 CN 201220534879 U CN201220534879 U CN 201220534879U CN 202939288 U CN202939288 U CN 202939288U
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Abstract
The utility model provides a storage battery electric quantity detection circuit which comprises a triode switching circuit which is connected with a storage battery, an LED drive circuit which is connected with the triode switching circuit, a first LED indicating lamp and a second LED indicating lamp. The first LED indicating lamp and the second LED indicating lamp are connected with the LED drive circuit. According to the storage battery electric quantity detection circuit, the voltage of the storage battery is detected though a triode and the LED indicating lamps, and under the condition of a low cost, a user can visually know the use of the electric quantity of the storage battery (such as low or normal).
Description
Technical field
The utility model relates to field of telecommunications, relates in particular to a kind of accumulator electric-quantity test circuit.
Background technology
Accumulator electric quantity detection apparatus has demand widely, day by day universal along with electric automobile, electric motorcycle, electric bicycle, whether battery electric quantity is too low becomes the item that each user need to know, because detecting, accumulator electric-quantity is in great demand, therefore the cost requirement of realizing the accumulator electric-quantity detection is higher, present accumulator electric-quantity testing circuit generally uses the device realization as a comparison of reference voltage chip (for example TL431) and operational amplifier chip (for example LM358), and cost is higher.
The utility model content
The technical matters that the utility model embodiment solves is, a kind of accumulator electric-quantity testing circuit is provided, and can under lower-cost situation, realize the detection of accumulator electric-quantity.
Concrete, the accumulator electric-quantity testing circuit that the utility model embodiment provides can comprise: the transistor switching circuit that is connected with described accumulator, the LED drive circuit that is connected with described transistor switching circuit and the first LED light that is connected with described LED drive circuit and the second LED light.
better, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8 and triode Q1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the base stage of triode Q1 is connected between resistance R 1 and resistance R 7, the emitter of triode Q1 is connected to the negative pole of accumulator, the collector of triode Q1 is connected to the positive pole of accumulator via resistance R 2, resistance R 8 is connected between the base stage and emitter of triode Q1, series voltage stabilizing diode Z1 between the tie point of the base stage of described triode Q1 and described base stage contact resistance R1 and resistance R 7.
better, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8, resistance R 13 and triode Q1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the emitter of triode Q1 is connected between resistance and resistance R 7, the collector of triode Q1 is connected to the negative pole of accumulator by resistance R 8, the base stage of triode Q1 is connected to the negative pole of accumulator, resistance R 13 is connected between the emitter and base stage of triode Q1, resistance R 2 is connected between the base stage of the positive pole of accumulator and triode Q1, series voltage stabilizing diode Z1 between the negative pole of the base stage of triode Q1 and accumulator.
better, described LED drive circuit comprises resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 9, resistance R 10, resistance R 11, resistance R 12, triode Q2 and triode Q3, wherein, triode Q2 is connected on the collector of triode Q1 via resistance R 9, the emitter of triode Q2 is connected to the negative pole of accumulator, resistance R 10 is connected between the base stage and emitter of triode Q2, the base stage of triode Q3 is connected on the collector of triode Q2 via resistance R 11, resistance R 12 is connected between the base stage and emitter of triode Q3, resistance R 4 and resistance R 3 are connected between the collector of the positive pole of accumulator and triode Q2, resistance R 6 and resistance R 5 are connected between the collector of the positive pole of accumulator and triode Q3, connect the first LED light on the two ends of resistance R 3, connect the second LED light on the two ends of resistance R 5.
Better, be in series with the switch of controlling the battery feed break-make between battery positive voltage and resistance R 1.
Implement the utility model embodiment, have following beneficial effect:
The utility model embodiment carries out battery tension by triode and LED light and detects, can be under situation cheaply, make the user intuitively learn accumulator electric-quantity operating position (such as, too low or normal).
Description of drawings
Fig. 1 is that the first example structure of accumulator electric-quantity testing circuit of the present utility model forms schematic diagram.
Fig. 2 is that the second example structure of accumulator electric-quantity testing circuit of the present utility model forms schematic diagram.
Embodiment
The utility model provides a kind of accumulator electric-quantity testing circuit, can comprise the transistor switching circuit that is connected with described accumulator, the LED drive circuit that is connected with described transistor switching circuit and the first LED light that is connected with described LED drive circuit and the second LED light.The utility model embodiment carries out battery tension by triode and LED light and detects, can be under situation cheaply, make the user intuitively learn accumulator electric-quantity operating position (such as, too low or normal).
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is that the first example structure of accumulator electric-quantity testing circuit of the present utility model forms schematic diagram.accumulator electric-quantity testing circuit of the present utility model can comprise transistor switching circuit, the LED drive circuit that is connected with described transistor switching circuit and the first LED light LED1 that is connected with LED drive circuit and the second LED light LED2, as shown in Figure 1, concrete, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8 and triode Q1, voltage stabilizing diode Z1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the base stage of triode Q1 is connected between resistance R 1 and resistance R 7 by voltage stabilizing diode Z1, the emitter of triode Q1 is connected to the negative pole of accumulator, the collector of triode Q1 is connected to the positive pole of accumulator via resistance R 2, resistance R 8 is connected between the base stage and emitter of triode Q1.described LED drive circuit comprises resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 9, resistance R 10, resistance R 11, resistance R 12, triode Q2 and triode Q3, wherein, triode Q2 is connected on the collector of triode Q1 via resistance R 9, the emitter of triode Q2 is connected to the negative pole of accumulator, resistance R 10 is connected between the base stage and emitter of triode Q2, the base stage of triode Q3 is connected on the collector of triode Q2 via resistance R 11, resistance R 12 is connected between the base stage and emitter of triode Q3, resistance R 4 and resistance R 3 are connected between the collector of the positive pole of accumulator and triode Q2, resistance R 6 and resistance R 5 are connected between the collector of the positive pole of accumulator and triode Q3, connect the first LED light LED1 on the two ends of resistance R 3, connect the second LED light LED2 on the two ends of resistance R 5.
In specific implementation, for convenience of accumulator is controlled, the switch SW 1 of the control battery feed break-make of can connecting between the positive pole of accumulator and resistance R 1.When switch SW 1 conducting, accumulator is connected, and when switch SW 1 disconnected, accumulator disconnected.
In specific implementation, when accumulator is connected, its two ends produce pressure drop, and through resistance R 1, resistance R 7 dividing potential drops, when the voltage of accumulator rises to higher than first threshold, can puncture BE knot (forward voltage between Base-Emitter) thresholding that voltage stabilizing diode Z1 also surpasses triode Q1, make the BE knot conducting of triode Q1, thereby the collector voltage generation saltus step of triode Q1 quickly falls to and is close to 0.When the voltage drop of accumulator arrives lower than first threshold, after resistance R 1, resistance R 7 dividing potential drops, can't puncture Z1, the BE getting customs clearance of triode Q1 is disconnected, and the collector voltage generation saltus step of triode Q1 rises near supply voltage rapidly.In specific implementation, the effect of resistance R 8 is to make the saltus step of voltage more sharp-pointed.When saltus step occurs in triode Q1, the anti-phase saltus step of the collector of triode Q2, thereby it is luminous or extinguish to drive the first LED light LED1, in like manner, the collector of triode Q3 is again collector anti-phase of triode Q2, therefore, the saltus step of triode Q3 can drive again that the second LED light LED2 extinguishes or be luminous.Therefore, in specific implementation, the utility model can be realized by triode the voltage detecting of accumulator, and lighting or extinguishing to the detection case of user's instructed voltage according to the first LED light or the second LED light.Such as, in the present embodiment, be the too low indication of cell voltage when LED1 is luminous separately, normally indicate for voltage when LED2 is luminous separately, when battery did not have electricity fully, LED1 and LED2 all extinguished.
In specific implementation, although the single-stage triode (such as, triode Q1) enlargement factor reaches hundreds of times, but be not infinity, therefore when battery tension is positioned in the 100mV up and down of first threshold, triode Q1 is in and does not open fully or incomplete off state, and this moment, LED1 and LED2 were simultaneously luminous.If increase by one to two-stage triode phase inverter, make the sharper tax of voltage jump of last two-stage phase inverter, the simultaneously luminous phenomenon of LED1 that people's naked eyes can observe and LED2 is eliminated.
In specific implementation, the resistance R 10 in the present embodiment, the effect of resistance R 12 are to make the saltus step of voltage more sharp-pointed.Resistance R 3, resistance R 5 are as the bypass resistance of LED1 and LED2, and its effect is to make LED1 and LED2 when triode on resistance is very large, can not send faint light.
In specific implementation, choose the voltage stabilizing diode Z1 of suitable parameter as temperature compensating element, can make the temperature coefficient of voltage detecting be close to 0.
As from the foregoing, the utility model carries out battery tension by triode and LED light and detects, can be under situation cheaply, make the user intuitively learn accumulator electric-quantity operating position (such as, too low or normal).
Fig. 2 is that the second example structure of accumulator electric-quantity testing circuit of the present utility model forms schematic diagram.accumulator electric-quantity testing circuit of the present utility model can comprise transistor switching circuit, the LED drive circuit that is connected with described transistor switching circuit and the first LED light LED1 that is connected with LED drive circuit and the second LED light LED2, as shown in Figure 2, concrete, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8, resistance R 13 and triode Q1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the emitter of triode Q1 is connected between resistance and resistance R 7, the collector of triode Q1 is connected to the negative pole of accumulator by resistance R 8, the base stage of triode Q1 is connected to the negative pole of accumulator, resistance R 13 is connected between the emitter and base stage of triode Q1, resistance R 2 is connected between the base stage of the positive pole of accumulator and triode Q1, series voltage stabilizing diode Z1 between the negative pole of the base stage of triode Q1 and accumulator.described LED drive circuit comprises resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 9, resistance R 10, resistance R 11, resistance R 12, triode Q2 and triode Q3, wherein, triode Q2 is connected on the collector of triode Q1 via resistance R 9, the emitter of triode Q2 is connected to the negative pole of accumulator, resistance R 10 is connected between the base stage and emitter of triode Q2, the base stage of triode Q3 is connected on the collector of triode Q2 via resistance R 11, resistance R 12 is connected between the base stage and emitter of triode Q3, resistance R 4 and resistance R 3 are connected between the collector of the positive pole of accumulator and triode Q2, resistance R 6 and resistance R 5 are connected between the collector of the positive pole of accumulator and triode Q3, connect the first LED light LED1 on the two ends of resistance R 3, connect the second LED light LED2 on the two ends of resistance R 5.
In specific implementation, for convenience of accumulator is controlled, the switch SW 1 of the control battery feed break-make of can connecting between the positive pole of accumulator and resistance R 1.When switch SW 1 conducting, accumulator is connected, and when switch SW 1 disconnected, accumulator disconnected.
In specific implementation, when accumulator is connected, principle at the present embodiment is identical with the first embodiment, its difference is that the present embodiment is the anti-phase implementation of the first embodiment, namely indicate normally for cell voltage when LED1 is luminous separately, be that brownout is indicated when LED2 is luminous separately, when battery did not have electricity fully, LED1 and LED2 all extinguished.
Above disclosed is only the utility model preferred embodiment, certainly can not limit with this interest field of the utility model, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and according to the equivalent variations that the utility model claim is done, still belong to the scope that utility model contains.
Claims (7)
1. accumulator electric-quantity testing circuit, it is characterized in that, comprising: the transistor switching circuit that is connected with described accumulator, the LED drive circuit that is connected with described transistor switching circuit and the first LED light that is connected with described LED drive circuit and the second LED light.
2. accumulator electric-quantity testing circuit as claimed in claim 1, it is characterized in that, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8 and triode Q1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the base stage of triode Q1 is connected between resistance R 1 and resistance R 7, the emitter of triode Q1 is connected to the negative pole of accumulator, the collector of triode Q1 is connected to the positive pole of accumulator via resistance R 2, resistance R 8 is connected between the base stage and emitter of triode Q1.
3. accumulator electric-quantity testing circuit as claimed in claim 2, is characterized in that, series voltage stabilizing diode Z1 between the tie point of the base stage of described triode Q1 and described base stage contact resistance R1 and resistance R 7.
4. accumulator electric-quantity testing circuit as claimed in claim 1, it is characterized in that, described transistor switching circuit comprises resistance R 1, resistance R 7, resistance R 2, resistance R 8, resistance R 13 and triode Q1, wherein, resistance R 1 and resistance R 7 are connected on described accumulator anode and cathode two ends, the emitter of triode Q1 is connected between resistance and resistance R 7, the collector of triode Q1 is connected to the negative pole of accumulator by resistance R 8, the base stage of triode Q1 is connected to the negative pole of accumulator, resistance R 13 is connected between the emitter and base stage of triode Q1, resistance R 2 is connected between the base stage of the positive pole of accumulator and triode Q1.
5. accumulator electric-quantity testing circuit as claimed in claim 4, is characterized in that, series voltage stabilizing diode Z1 between the negative pole of the base stage of triode Q1 and accumulator.
6. accumulator electric-quantity testing circuit as described in any one in claim 1-5, it is characterized in that, described LED drive circuit comprises resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 9, resistance R 10, resistance R 11, resistance R 12, triode Q2 and triode Q3, wherein, triode Q2 is connected on the collector of triode Q1 via resistance R 9, the emitter of triode Q2 is connected to the negative pole of accumulator, resistance R 10 is connected between the base stage and emitter of triode Q2, the base stage of triode Q3 is connected on the collector of triode Q2 via resistance R 11, resistance R 12 is connected between the base stage and emitter of triode Q3, resistance R 4 and resistance R 3 are connected between the collector of the positive pole of accumulator and triode Q2, resistance R 6 and resistance R 5 are connected between the collector of the positive pole of accumulator and triode Q3, connect the first LED light on the two ends of resistance R 3, connect the second LED light on the two ends of resistance R 5.
7. accumulator electric-quantity testing circuit as claimed in claim 1, is characterized in that, is in series with the switch of controlling the battery feed break-make between battery positive voltage and resistance R 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220534879 CN202939288U (en) | 2012-10-18 | 2012-10-18 | Storage battery electric quantity detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220534879 CN202939288U (en) | 2012-10-18 | 2012-10-18 | Storage battery electric quantity detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202939288U true CN202939288U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220534879 Expired - Fee Related CN202939288U (en) | 2012-10-18 | 2012-10-18 | Storage battery electric quantity detection circuit |
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| CN (1) | CN202939288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066258A (en) * | 2014-07-15 | 2014-09-24 | 大连交通大学 | LED lighting and dimming control system based on PWM |
| CN111693903A (en) * | 2020-05-22 | 2020-09-22 | 杭州高特电子设备股份有限公司 | Battery collection wire harness error-proofing detection circuit and wire harness detector |
-
2012
- 2012-10-18 CN CN 201220534879 patent/CN202939288U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066258A (en) * | 2014-07-15 | 2014-09-24 | 大连交通大学 | LED lighting and dimming control system based on PWM |
| CN111693903A (en) * | 2020-05-22 | 2020-09-22 | 杭州高特电子设备股份有限公司 | Battery collection wire harness error-proofing detection circuit and wire harness detector |
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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 |
Granted publication date: 20130515 Termination date: 20151018 |
|
| EXPY | Termination of patent right or utility model |