CN104133105A - Battery under-voltage prompting circuit and electronic equipment - Google Patents
Battery under-voltage prompting circuit and electronic equipment Download PDFInfo
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- CN104133105A CN104133105A CN201310160699.3A CN201310160699A CN104133105A CN 104133105 A CN104133105 A CN 104133105A CN 201310160699 A CN201310160699 A CN 201310160699A CN 104133105 A CN104133105 A CN 104133105A
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Abstract
The embodiment of the invention discloses a battery under-voltage prompting circuit, which comprises a battery, a voltage detection circuit, a drive circuit and a prompting circuit, wherein the battery is connected with the drive circuit via the voltage detection circuit; and the drive circuit is connected with the prompting circuit. The battery outputs the current voltage to the voltage detection circuit. If the voltage detection circuit detects that the current voltage is larger than the preset threshold voltage, a first trigger signal is sent to the drive circuit, and the drive circuit indicates the prompting circuit to send a first prompting signal according to the first trigger signal; and if the voltage detection circuit detects the current voltage is smaller than the preset threshold voltage, a second trigger signal is sent to the drive circuit, and the drive circuit indicates the prompting circuit to send a second prompting signal according to the second trigger signal. By adopting the battery under-voltage prompting circuit, the service life of the battery can be prolonged.
Description
Technical field
The present invention relates to circuit field, relate in particular to a kind of battery undervoltage cue circuit and electronic equipment.
Background technology
Utilize battery as energy source, can obtain having burning voltage, steady current, long-time stable power-supplying, be subject to the electric current that ectocine is very little, and battery structure is simple, easy to carry, discharge and recharge easy to operation, be not subject to the impact of extraneous weather and temperature, stable and reliable for performance, the various aspects in modern society's life play an important role, and in electric energy is used, occupy significant proportion.In use for some time, cell voltage can decline battery, when dropping to certain magnitude of voltage, uses the equipment of this battery to work, if at this moment continue to use battery can cause battery over-discharge and damage, affects the serviceable life of battery again.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of battery undervoltage cue circuit and electronic equipment are provided.The deficiency that can solve battery over-discharge in prior art and cause battery to shorten.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of battery undervoltage cue circuit, comprising:
Battery, voltage detecting circuit, driving circuit and cue circuit, described battery is connected with described driving circuit by described voltage detecting circuit, and described driving circuit is connected with described cue circuit;
Wherein, described battery output current voltage is to described voltage detecting circuit, if described voltage detecting circuit detects described current voltage and is greater than preset threshold voltage, to described driving circuit, send the first trigger pip, described driving circuit indicates described cue circuit to send the first cue according to described the first trigger pip;
If described voltage detecting circuit detects described current voltage and is less than described preset threshold voltage, to described driving circuit, send the second trigger pip, described driving circuit indicates described cue circuit to send the second cue according to described the second trigger pip.
Correspondingly, the embodiment of the present invention also provides a kind of electronic equipment, comprises above-mentioned battery undervoltage cue circuit.
Implement the embodiment of the present invention, there is following beneficial effect:
Detect the current voltage of battery and whether surpass preset threshold voltage, by sending different cues, carry out the state of charge of reminding user battery, so that user the current voltage of battery during lower than threshold voltage in time for battery charges, avoided in prior art battery in use because overdischarge causes damaging, the serviceable life of having improved battery.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of battery undervoltage cue circuit of the embodiment of the present invention;
Fig. 2 is the circuit diagram of a kind of battery undervoltage cue circuit of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1, the structural representation for a kind of battery undervoltage cue circuit of the embodiment of the present invention, comprises battery 1, voltage detecting circuit 2, driving circuit 3 and cue circuit 4, and the course of work is as follows:
Battery 1 is to voltage detecting circuit 2 output current voltages, voltage detecting circuit 2 detects described current voltage and whether is greater than preset threshold voltage, if yes, to driving circuit 3, send the first trigger pip, driving circuit 3 sends the first cue according to described the first trigger pip indication cue circuit 4, if NO, voltage detecting circuit 2 sends the second trigger pip to driving circuit 3, and driving circuit 3 sends the second cue according to described the second trigger pip indication cue circuit 4.
For example, the current voltage of battery 1 is 12V, threshold voltage is 5V, now voltage detecting circuit 2 detects current voltage and is greater than threshold voltage, to driving circuit 3, send the first trigger pips, the form of this first trigger pip can be pulse or predetermined current value or the predetermined magnitude of voltage of given shape, and driving circuit 3 is received after the first trigger pip, indication cue circuit sends the first cue, and the form of this first cue can be acoustical signal and/or light signal; Battery 1 is being used after a period of time, current voltage value is reduced to 4V, now voltage detecting circuit 2 detects current voltage and is less than threshold voltage, to driving circuit 3, send the second trigger pip, the form of this second trigger pip can be pulse or predetermined current value or the predetermined magnitude of voltage of given shape, the present invention is not restricted, driving circuit 3 is received after the second trigger pip, indication cue circuit sends the second cue, the form of this second cue can be acoustical signal and/or light signal, or other forms of signal, the present invention is not restricted.Be understandable that, above-mentioned the first cue and the second cue should be different, to distinguish the current voltage of battery 1, whether are greater than threshold voltage.
Implement embodiments of the invention, detect the current voltage of battery and whether surpass preset threshold voltage, by sending different cues, carry out the state of charge of reminding user battery, so that user the current voltage of battery during lower than threshold voltage in time for battery charges, avoided in prior art battery in use because overdischarge causes damaging, the serviceable life of having improved battery.
Referring to Fig. 2, circuit diagram for a kind of battery undervoltage cue circuit of the embodiment of the present invention, wherein, voltage detecting circuit 2 comprises stabilivolt ZD, and driving circuit 3 comprises PNP triode V1, NPN triode V2, the first controllable silicon Q1, the second controllable silicon Q2, the first capacitor C 1, the second capacitor C 2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4; Cue circuit 4 comprises the first LED 1 and the second LED 2, the first LED 1 is different with the glow color of the second LED 2, while supposing the first LED 1 work, glow, the second LED 2 green light, this circuit also comprises a battery BT, and the annexation of above-mentioned parts is:
The positive pole of battery 1 connects one end of the 3rd resistance R 3, and the negative pole of battery 1 connects the LED1 negative electrode of the first light emitting diode; The other end of the 3rd resistance R 3 connects the collector of NPN triode V2; The emitter of NPN triode V2 connects respectively one end of the second capacitor C 2 and the anode of the second LED 2, and the base stage of NPN triode V2 connects respectively one end of base stage and the second resistance R 2 of PNP triode V1;
The collector V1 of PNP triode connects respectively one end of the first capacitor C 1 and one end of the 4th resistance R 4; The emitter of PNP triode V1 connects the negative electrode of stabilivolt ZD;
The anode of stabilivolt ZD connects respectively the other end of the second resistance R 2 and one end of the first resistance R 1;
The other end of the first resistance R 1 connects the anode of the second controllable silicon Q2;
The control utmost point of the second controllable silicon Q2 connects the other end of the second capacitor C 2, and the negative electrode of the second controllable silicon Q2 connects negative electrode and the ground connection that connects respectively the second LED 2;
The anode of the second LED 2 connects respectively the anode of the first controllable silicon Q1 and the emitter of NPN triode V2;
The negative electrode of the first controllable silicon Q1 connects respectively the negative electrode of the first LED 1 and the negative electrode of the second LED 2; The control utmost point of the first controllable silicon Q1 connects the other end of the first capacitor C 1;
The other end of the anodic bonding of the first LED 1 the 4th resistance R 4.
The course of work of this battery undervoltage cue circuit is: by stabilivolt ZD, form battery BT voltage detecting circuit, when battery BT voltage is when high, stabilivolt ZD conducting, for example, the current voltage that battery BT is is 12V, stabilivolt ZD is 9V stabilivolt, and when the current voltage of battery is when 9V is above, stabilivolt ZD could conducting.
During stabilivolt ZD conducting, the first resistance R 1 two ends are noble potential, the second resistance R 2 makes PNP triode V1 for cut-off state simultaneously, NPN triode V2 is for conducting state, and electric current, by the second capacitor C 2, triggers the second controllable silicon Q2 conducting, battery BT drives power supply to rear class, now the second LED 2 gives a green light, and shows that battery BT electric weight is sufficient, and power supply is normal.
When the current voltage of the battery BT threshold voltage (as above the threshold voltage in example is 5V) lower than stabilivolt ZD, now stabilivolt ZD cut-off, stabilivolt ZD anode voltage is for negative, make PNP triode V1 forward conduction, NPN triode V2 cut-off, now electric current is by the first capacitor C 1, trigger the first controllable silicon Q1 conducting, the voltage of the second capacitor C 2 loads on the negative electrode of the second controllable silicon Q2 by the first controllable silicon Q1, make the second controllable silicon Q2 for stopper, stop externally fed, now the first LED 1 sends out a warning, the second LED 2 extinguishes, show under-voltage, represent that battery BT needs charging, cut off the output voltage of battery BT simultaneously.
Implement embodiments of the invention, detect the current voltage of battery and whether surpass preset threshold voltage, by sending different cues, carry out the state of charge of reminding user battery, so that user the current voltage of battery during lower than threshold voltage in time for battery charges, avoided in prior art battery in use because overdischarge causes damaging, the serviceable life of having improved battery.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (7)
1. a battery undervoltage cue circuit, is characterized in that, comprises battery, voltage detecting circuit, driving circuit and cue circuit, and described battery is connected with described driving circuit by described voltage detecting circuit, and described driving circuit is connected with described cue circuit;
Wherein, described battery output current voltage is to described voltage detecting circuit, if described voltage detecting circuit detects described current voltage and is greater than preset threshold voltage, to described driving circuit, send the first trigger pip, described driving circuit indicates described cue circuit to send the first cue according to described the first trigger pip;
If described voltage detecting circuit detects described current voltage and is less than described preset threshold voltage, to described driving circuit, send the second trigger pip, described driving circuit indicates described cue circuit to send the second cue according to described the second trigger pip.
2. circuit as claimed in claim 1, is characterized in that, described voltage detecting circuit comprises stabilivolt.
3. circuit as claimed in claim 2, is characterized in that, described driving circuit comprises PNP triode, NPN triode, the first controllable silicon, the second controllable silicon, the first electric capacity, the second electric capacity, the first resistance, the second resistance, the 3rd resistance and the 4th resistance.
4. circuit as claimed in claim 3, is characterized in that, described cue circuit comprises the first light emitting diode and the second light emitting diode, and described the first light emitting diode is different with the glow color of the second light emitting diode.
5. circuit as claimed in claim 4, is characterized in that, the positive pole of described battery connects one end of described the 3rd resistance, and the negative pole of described battery connects the negative electrode of described the first light emitting diode;
The other end of described the 3rd resistance connects the collector of described NPN triode;
The emitter of described NPN triode connects respectively one end of described the second electric capacity and the anode of described the second light emitting diode, and the base stage of described NPN triode connects respectively the base stage of described PNP triode and one end of described the second resistance;
The collector of described PNP triode connects respectively one end of described the first electric capacity and one end of described the 4th resistance; The emitter of described PNP triode connects the negative electrode of described stabilivolt;
The anode of described stabilivolt connects respectively one end of the other end and described first resistance of described the second resistance;
The other end of described the first resistance connects described the second silicon controlled anode;
Described the second silicon controlled is controlled the other end that the utmost point connects described the second electric capacity, and described the second silicon controlled negative electrode connects negative electrode and the ground connection that connects respectively described the second light emitting diode;
The anode of described the second light emitting diode connects respectively the emitter of described the first silicon controlled anode and described NPN triode;
Described the first silicon controlled negative electrode connects respectively the negative electrode of described the first light emitting diode and the negative electrode of described the second light emitting diode; Described the first silicon controlled is controlled the other end that the utmost point connects described the first electric capacity;
The other end of the 4th resistance described in the anodic bonding of described the first light emitting diode.
6. circuit as claimed in claim 5, is characterized in that, described the first electric capacity and the second electric capacity are polar capacitor, and the positive pole of described the first electric capacity connects the collector of described PNP triode, and the negative pole of described the first electric capacity connects described the first silicon controlled and controls the utmost point; The positive pole of described the second electric capacity connects the emitter of described NPN triode, and the negative pole of described the second electric capacity connects described the second silicon controlled and controls the utmost point.
7. an electronic equipment, is characterized in that, comprises the battery undervoltage cue circuit as described in claim 1-6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160699.3A CN104133105B (en) | 2013-05-03 | 2013-05-03 | A kind of battery undervoltage cue circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160699.3A CN104133105B (en) | 2013-05-03 | 2013-05-03 | A kind of battery undervoltage cue circuit and electronic equipment |
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| CN104133105A true CN104133105A (en) | 2014-11-05 |
| CN104133105B CN104133105B (en) | 2017-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310160699.3A Active CN104133105B (en) | 2013-05-03 | 2013-05-03 | A kind of battery undervoltage cue circuit and electronic equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212209Y (en) * | 1994-08-31 | 1995-11-08 | 于福海 | Circuit fault detector of motor vehicle |
| CN101988934A (en) * | 2009-07-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Undervoltage detection and alarm circuit |
| US20110241894A1 (en) * | 2010-04-02 | 2011-10-06 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Low voltage warning circuit |
| US20120293159A1 (en) * | 2011-05-18 | 2012-11-22 | Hon Hai Precision Industry Co., Ltd. | Voltage testing circuit |
-
2013
- 2013-05-03 CN CN201310160699.3A patent/CN104133105B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212209Y (en) * | 1994-08-31 | 1995-11-08 | 于福海 | Circuit fault detector of motor vehicle |
| CN101988934A (en) * | 2009-07-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Undervoltage detection and alarm circuit |
| US20110241894A1 (en) * | 2010-04-02 | 2011-10-06 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Low voltage warning circuit |
| CN102213730A (en) * | 2010-04-02 | 2011-10-12 | 鸿富锦精密工业（深圳）有限公司 | Low-voltage alarm circuit |
| US20120293159A1 (en) * | 2011-05-18 | 2012-11-22 | Hon Hai Precision Industry Co., Ltd. | Voltage testing circuit |
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| CN104133105B (en) | 2017-08-15 |
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