CN205139336U - Power detection circuit and gas -cooker - Google Patents
Power detection circuit and gas -cooker Download PDFInfo
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- CN205139336U CN205139336U CN201520921869.XU CN201520921869U CN205139336U CN 205139336 U CN205139336 U CN 205139336U CN 201520921869 U CN201520921869 U CN 201520921869U CN 205139336 U CN205139336 U CN 205139336U
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Abstract
The utility model discloses a power detection circuit, power detection circuit includes voltage sampling circuit, comparator, current -limiting resistor, boost circuit and delay circuit, wherein, voltage sampling circuit is used for gathering the voltage of boost circuit output, in the inverting input of comparator end and the non inverting input end one and voltage sampling circuit's output is connected, and another person is connected with the anodal of the battery that awaits measuring through current -limiting resistor, in order to detect whether the voltage of battery of awaiting measuring is less than the default, the power end of comparator with boost circuit's output is connected, boost circuit's input with the anodal of battery that await measuring is connected, delay circuit is connected with the key switch that presets, is used for working as back, control are pressed to the button boost circuit produces output voltage in the preset time section. The utility model also discloses a gas -cooker. The utility model discloses reduce electric quantity detection's consumption, prolonged the life of battery.
Description
Technical field
The utility model relates to gas-cooker technical field, particularly relates to electric quantity detecting circuit and gas-cooker.
Background technology
As everyone knows, be typically provided with electric quantity detecting circuit in existing gas-cooker to detect the electricity of battery, export corresponding information when electricity is lower with reminding user to replace battery, ensure the normal work of gas-cooker.But in traditional electric quantity detecting circuit, electric quantity detecting circuit is in detected state in real time, therefore makes power consumption comparatively large, affect the serviceable life of battery.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of electric quantity detecting circuit and gas-cooker, is intended to the power consumption reducing electric power detection, extends the serviceable life of battery.
To achieve these goals, the utility model provides a kind of electric quantity detecting circuit, described electric quantity detecting circuit comprises voltage sampling circuit, comparer, current-limiting resistance, booster circuit and delay circuit, and wherein, described voltage sampling circuit is for gathering the voltage of described booster circuit output terminal; The inverting input of described comparer is connected with the output terminal of one in in-phase input end with described voltage sampling circuit, another one is connected with the positive pole of mesuring battary by current-limiting resistance, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer is connected with the output terminal of described booster circuit; The input end of described booster circuit is connected with the positive pole of described mesuring battary; Described delay circuit is connected with preset keyswitch, for after described button is pressed, controls described booster circuit and produce output voltage within preset time period.
Preferably, described voltage sampling circuit comprises the first resistance and the second resistance, and one end of described first resistance is connected with the output terminal of described booster circuit, and the other end is connected with the inverting input of described comparer; One end of described second resistance is connected with the in-phase input end of described comparer, other end ground connection.
Preferably, described electric quantity detecting circuit also comprises the 3rd resistance and light emitting diode, and the anode of wherein said light emitting diode is connected with the output terminal of described booster circuit, and negative electrode is connected with the output terminal of described comparer by described 3rd resistance.
Preferably, described booster circuit comprises boost chip and the first inductance, the input end of described boost chip is connected with the positive pole of described mesuring battary by described first inductance, power end is connected with the positive pole of described mesuring battary, Enable Pin is connected with described delay circuit, and output terminal is the output terminal of described booster circuit.
Preferably, described booster circuit also comprises the first electric capacity, and one end of described first electric capacity is connected with the output terminal of described boost chip, other end grounding connection.
Preferably, described booster circuit also comprises the second electric capacity, and one end of described second electric capacity is connected with the power end of described boost chip, other end grounding connection.
Preferably, described delay circuit comprises the 4th resistance, the 5th resistance and the 3rd electric capacity, and the first end of described 4th resistance is connected with the Enable Pin of described boost chip, and the second end is connected by the 5th resistance eutral grounding; Described 3rd Capacitance parallel connection is in the two ends of described 5th resistance.
Preferably, described delay circuit also comprises the first diode and the second diode, described button comprises the first knob button and the second knob button, the anode of described first diode is connected with described first knob button, negative electrode is connected with the first end of described 4th resistance, and when described first knob button presses connection, described first diode current flow; The anode of described second diode is connected with described second knob button, and negative electrode is connected with the first end of described 4th resistance, and when described second knob button presses connection, described second diode current flow.
In addition, for achieving the above object, the utility model also provides a kind of gas-cooker, described gas-cooker electric quantity detecting circuit, described electric quantity detecting circuit comprises voltage sampling circuit, comparer, current-limiting resistance, booster circuit and delay circuit, wherein, described voltage sampling circuit is for gathering the voltage of described booster circuit output terminal; The inverting input of described comparer is connected with the output terminal of one in in-phase input end with described voltage sampling circuit, another one is connected with the positive pole of mesuring battary by current-limiting resistance, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer is connected with the output terminal of described booster circuit; The input end of described booster circuit is connected with the positive pole of described mesuring battary; Described delay circuit is connected with preset keyswitch, for after described button is pressed, controls described booster circuit and produce output voltage within preset time period.
The utility model embodiment is by adopting following circuit structure, and electric quantity detecting circuit comprises voltage sampling circuit, comparer, current-limiting resistance, booster circuit and delay circuit, and wherein, described voltage sampling circuit is for gathering the voltage of described booster circuit output terminal; The inverting input of described comparer is connected with the output terminal of one in in-phase input end with described voltage sampling circuit, another one is connected with the positive pole of mesuring battary by current-limiting resistance, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer is connected with the output terminal of described booster circuit; The input end of described booster circuit is connected with the positive pole of described mesuring battary; Described delay circuit is connected with preset keyswitch, for after described button is pressed, controls described booster circuit and produce output voltage within preset time period.Thus electric power detection can be carried out in the moment of gas combustion range ignition, when not carrying out electric power detection, the power consumption of electric quantity detecting circuit is zero, and therefore the utility model reduces the power consumption of electric power detection, extends the serviceable life of battery.
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, the structure according to these accompanying drawings can also obtain other accompanying drawing.
Fig. 1 is the electrical block diagram of the utility model electric quantity detecting circuit preferred embodiment.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 10 | Voltage sampling circuit | R5 | 5th resistance |
| 20 | Comparer | 41 | Boost chip |
| 30 | Current-limiting resistance | L | First inductance |
| 40 | Booster circuit | C1 | First electric capacity |
| 50 | Delay circuit | C2 | Second electric capacity |
| R1 | First resistance | C3 | 3rd electric capacity |
| R2 | Second resistance | D1 | First diode |
| R3 | 3rd resistance | D2 | Second diode |
| R4 | 4th resistance |
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
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 a part of embodiment of the present utility model, 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.
Need explanation, all directivity instruction (such as up, down, left, right, before and afters in the utility model embodiment ...) only for explaining the relative position relation, motion conditions etc. under a certain particular pose (as shown in drawings) between each parts, if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, in the utility model, relate to the description of " first ", " second " etc. only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not the utility model require protection domain within.
The utility model provides a kind of electric quantity detecting circuit, with reference to Fig. 1, in one embodiment, this electric quantity detecting circuit comprises voltage sampling circuit 10, comparer 20, current-limiting resistance 30, booster circuit 40 and delay circuit 50, wherein, described voltage sampling circuit 10 is for gathering the voltage of described booster circuit 40 output terminal; The inverting input of described comparer 20 is connected with the output terminal of one in in-phase input end with described voltage sampling circuit 10, another one is connected with the positive pole of mesuring battary by current-limiting resistance 30, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer 20 is connected with the output terminal of described booster circuit 40; The input end of described booster circuit 40 is connected with the positive pole (VBAT) of described mesuring battary; Described delay circuit 50 is connected with preset keyswitch, for after described button is pressed, controls described booster circuit 40 and produce output voltage within preset time period.
The crossing detector circuit that the present embodiment provides is mainly used in gas-cooker, for detecting the battery electric quantity in gas-cooker.Particularly, above-mentioned button can be the knob button of gas-cooker for striking sparks.
The inverting input of the above-mentioned output terminal of voltage sampling circuit 10 and the positive pole of mesuring battary and comparer 20 and the connected mode of in-phase input end can be arranged according to actual needs, such as in one embodiment, the output terminal of voltage sampling circuit 10 can be connected with the inverting input of comparer 20, and the positive pole of mesuring battary is connected with the in-phase input end of comparer 20; In another embodiment, the output terminal of voltage sampling circuit 10 can be connected with the in-phase input end of comparer 20, and the positive pole of mesuring battary is connected with the inverting input of comparer 20.Particularly, above-mentioned preset value is the voltage compare value after voltage sampling circuit 10 is sampled, namely above-mentioned comparer 20 is for comparing the magnitude relationship of the voltage compare value after mesuring battary voltage and voltage sampling circuit 10 sampling, then export corresponding level information from the output terminal of comparer 20, can information about power be obtained according to this level information.
The voltage signal that above-mentioned delay circuit 50 transmits for receiving button, when receiving high level signal, booster circuit 40 is started working, and boosts to the voltage of mesuring battary, output to the power end of comparer 20 after boosting, start working to control comparer 20.Now, by the in-phase input end of comparer 20 and the voltage compare of inverting input, thus the information about power of mesuring battary is determined.After button is released, button stops putting high level voltage, and now delay circuit discharges, when discharging into a certain degree, booster circuit 40 will quit work, now, then booster circuit 40 no-output voltage, comparer 20 quits work, thus stops the electric power detection to mesuring battary.
The utility model embodiment is by adopting following circuit structure, electric quantity detecting circuit comprises voltage sampling circuit 10, comparer 20, current-limiting resistance 30, booster circuit 40 and delay circuit 50, wherein, described voltage sampling circuit 10 is for gathering the voltage of described booster circuit 40 output terminal; The inverting input of described comparer 20 is connected with the output terminal of one in in-phase input end with described voltage sampling circuit 10, another one is connected with the positive pole of mesuring battary by current-limiting resistance 30, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer 20 is connected with the output terminal of described booster circuit 40; The input end of described booster circuit 40 is connected with the positive pole (VBAT) of described mesuring battary; Described delay circuit 50 is connected with preset keyswitch, for after described button is pressed, controls described booster circuit 40 and produce output voltage within preset time period.Thus electric power detection can be carried out in the moment of gas combustion range ignition, when not carrying out electric power detection, the power consumption of electric quantity detecting circuit is zero, and therefore the utility model reduces the power consumption of electric power detection, extends the serviceable life of battery.
Particularly, the structure of above-mentioned voltage sampling circuit can be arranged according to actual needs, in the present embodiment, above-mentioned voltage sampling circuit comprises the first resistance R1 and the second resistance R2, one end of described first resistance R1 is connected with the output terminal of described booster circuit 40, and the other end is connected with the inverting input of described comparer 20; One end of described second resistance R2 is connected with the in-phase input end of described comparer 20, other end ground connection.
In the present embodiment, the resistance size of above-mentioned first resistance R1 and the second resistance R2 can be arranged according to actual needs.Particularly, above-mentioned voltage compare value is the magnitude of voltage at the second resistance R2 two ends.Under described comparer 20 is in running order, when magnitude of voltage lower than the second resistance R2 two ends of the magnitude of voltage of mesuring battary, the output terminal of described comparer 20 is by output low level signal; When magnitude of voltage higher than the second resistance R2 two ends of the magnitude of voltage of mesuring battary, the output terminal of described comparer 20 will export high level signal.
Be understandable that, based on above-described embodiment, in the present embodiment, can arrange according to actual needs for the alert circuit structure after electric power detection.The present embodiment preferably, above-mentioned electric quantity detecting circuit also comprises the 3rd resistance R3 and LED, the anode of wherein said LED is connected with the output terminal of described booster circuit 40, and negative electrode is connected with the output terminal of described comparer 20 by described 3rd resistance R3.
In the present embodiment under described comparer 20 is in running order, when magnitude of voltage lower than the second resistance R2 two ends of the magnitude of voltage of mesuring battary, the output terminal of described comparer 20 is by output low level signal, and now LED is in lighting lamp state (namely representing that battery electric quantity is not enough); When magnitude of voltage higher than the second resistance R2 two ends of the magnitude of voltage of mesuring battary, the output terminal of described comparer 20 will export high level signal, and now LED is in the state of turning off the light (namely representing that battery electric quantity is sufficient).
Be understandable that, in other embodiments, when the in-phase input end of above-mentioned comparer 20 and the connection status of inverting input exchange, then the lighting lamp state of LED also changes thereupon.
Further, based on above-described embodiment, in the present embodiment, above-mentioned booster circuit 40 comprises boost chip 41 and the first inductance L, the input end SW of described boost chip 41 is connected with the positive pole of described mesuring battary by described first inductance L, power end VCC is connected with the positive pole of described mesuring battary, and Enable Pin EN is connected with described delay circuit 50, and output terminal VOUT is the output terminal of described booster circuit 40.
In the present embodiment, in order to improve the stability of input voltage, preferably, above-mentioned booster circuit 40 also comprises the first electric capacity C1, and one end of described first electric capacity C1 is connected with the output terminal of described boost chip 41, other end grounding connection.
In addition, in order to improve the stability of output voltage, preferably, above-mentioned booster circuit 40 also comprises the second electric capacity C2, and one end of described second electric capacity C2 is connected with the power end of described boost chip 41, other end grounding connection.
In the present embodiment, when the voltage of the Enable Pin EN of above-mentioned boost chip 41 is high level, above-mentioned boost chip 41 is in running order, can produce output voltage; When the voltage of the Enable Pin EN of boost chip 41 is low level, above-mentioned boost chip 41 is in out-of-work state, does not produce output voltage.
In the present embodiment, the signal of above-mentioned boost chip 41 can be arranged according to actual needs, and such as, this boost chip 41 can be the boost chip of SGM6603-5V, and the cell voltage by 3V is promoted to the boost chip of 5V voltage.In this boost chip 41, the first pin is input end, crus secunda is earth terminal, tripod is Enable Pin, the 4th pin is feedback end, the 5th pin is output terminal, the 6th pin is power end.During work, carry out energy storage by inductance L, after boosting through boost chip 41, the output terminal of boost chip 41 can be made to export the voltage of 5V.
Further, based on above-described embodiment, in the present embodiment, above-mentioned delay circuit comprises the 4th resistance R4, the 5th resistance R5 and the 3rd electric capacity C3, the first end of described 4th resistance R4 is connected with the Enable Pin of described boost chip 41, and the second end is by the 5th resistance R5 grounding connection; Described 3rd electric capacity C3 is parallel to the two ends of described 5th resistance R5.
In the present embodiment, the two ends that above-mentioned 3rd electric capacity C3 is parallel to described 5th resistance R5 form RC delay circuit structure, and above-mentioned 4th resistance R4 is used for current limliting.When above-mentioned button is connected, form high level at the common port of the 4th resistance R4 and the 5th resistance R5, now boost chip 41 is started working; After button disconnects, the 3rd electric capacity C3 starts electric discharge, after electric discharge a period of time, makes the common port of the 4th resistance R4 and the 5th resistance R5 become low level from high level, thus boost chip 41 is quit work, be i.e. boost chip 41 no-output voltage.
Further, in gas-cooker, be typically provided with two buttons, for meet any one button press time, the detection of battery electric quantity can be carried out.Based on above-described embodiment, in the present embodiment, above-mentioned delay circuit also comprises the first diode D1 and the second diode D2, described button comprises the first knob button and the second knob button, the anode of described first diode D1 is connected with described first knob button, negative electrode is connected with the first end of described 4th resistance R4, and when described first knob button presses connection, described first diode D1 conducting; The anode of described second diode D2 is connected with described second knob button, and negative electrode is connected with the first end of described 4th resistance R4, and when described second knob button presses connection, described second diode D2 conducting.
In the present embodiment, above-mentioned first knob button at least comprises two links, and wherein a link is provided with high level voltage (being such as connected with the positive pole of battery), and another link is connected with the anode of described first diode D1; When the first knob button is not pressed, the anode of the first diode D1 is equivalent to vacant state, when the first knob button is pressed, and the anode access high level of the first diode D1.Above-mentioned second knob button at least comprises two links, and wherein a link is provided with high level voltage (being such as connected with the positive pole of battery), and another link is connected with the anode of described second diode D2; When the second knob button is not pressed, the anode of the second diode D2 is equivalent to vacant state, when the second knob button is pressed, and the anode access high level of the second diode D2.
The utility model also provides a kind of gas-cooker, and this gas-cooker comprises electric quantity detecting circuit, and the structure of this electric quantity detecting circuit can refer to above-described embodiment, does not repeat them here.Naturally, the gas-cooker due to the present embodiment have employed the technical scheme of above-mentioned electric quantity detecting circuit, and therefore this gas-cooker has all beneficial effects of above-mentioned electric quantity detecting circuit.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. an electric quantity detecting circuit, is characterized in that, described electric quantity detecting circuit comprises voltage sampling circuit, comparer, current-limiting resistance, booster circuit and delay circuit, and wherein, described voltage sampling circuit is for gathering the voltage of described booster circuit output terminal; The inverting input of described comparer is connected with the output terminal of one in in-phase input end with described voltage sampling circuit, another one is connected with the positive pole of mesuring battary by current-limiting resistance, whether to detect the voltage of described mesuring battary lower than preset value, the power end of described comparer is connected with the output terminal of described booster circuit; The input end of described booster circuit is connected with the positive pole of described mesuring battary; Described delay circuit is connected with preset keyswitch, for after described button is pressed, controls described booster circuit and produce output voltage within preset time period.
2. electric quantity detecting circuit as claimed in claim 1, it is characterized in that, described voltage sampling circuit comprises the first resistance and the second resistance, and one end of described first resistance is connected with the output terminal of described booster circuit, and the other end is connected with the inverting input of described comparer; One end of described second resistance is connected with the in-phase input end of described comparer, other end ground connection.
3. electric quantity detecting circuit as claimed in claim 2, it is characterized in that, described electric quantity detecting circuit also comprises the 3rd resistance and light emitting diode, the anode of wherein said light emitting diode is connected with the output terminal of described booster circuit, and negative electrode is connected with the output terminal of described comparer by described 3rd resistance.
4. electric quantity detecting circuit as claimed in claim 1, it is characterized in that, described booster circuit comprises boost chip and the first inductance, the input end of described boost chip is connected with the positive pole of described mesuring battary by described first inductance, power end is connected with the positive pole of described mesuring battary, Enable Pin is connected with described delay circuit, and output terminal is the output terminal of described booster circuit.
5. electric quantity detecting circuit as claimed in claim 4, it is characterized in that, described booster circuit also comprises the first electric capacity, and one end of described first electric capacity is connected with the output terminal of described boost chip, other end grounding connection.
6. electric quantity detecting circuit as claimed in claim 4, it is characterized in that, described booster circuit also comprises the second electric capacity, and one end of described second electric capacity is connected with the power end of described boost chip, other end grounding connection.
7. electric quantity detecting circuit as claimed in claim 4, it is characterized in that, described delay circuit comprises the 4th resistance, the 5th resistance and the 3rd electric capacity, and the first end of described 4th resistance is connected with the Enable Pin of described boost chip, and the second end is connected by the 5th resistance eutral grounding; Described 3rd Capacitance parallel connection is in the two ends of described 5th resistance.
8. electric quantity detecting circuit as claimed in claim 7, it is characterized in that, described delay circuit also comprises the first diode and the second diode, described button comprises the first knob button and the second knob button, the anode of described first diode is connected with described first knob button, negative electrode is connected with the first end of described 4th resistance, and when described first knob button presses connection, described first diode current flow; The anode of described second diode is connected with described second knob button, and negative electrode is connected with the first end of described 4th resistance, and when described second knob button presses connection, described second diode current flow.
9. a gas-cooker, is characterized in that, comprises the electric quantity detecting circuit according to any one of claim 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921869.XU CN205139336U (en) | 2015-11-17 | 2015-11-17 | Power detection circuit and gas -cooker |
| PCT/CN2016/100371 WO2017084436A1 (en) | 2015-11-17 | 2016-09-27 | Capacity detection circuit and gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921869.XU CN205139336U (en) | 2015-11-17 | 2015-11-17 | Power detection circuit and gas -cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205139336U true CN205139336U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520921869.XU Active CN205139336U (en) | 2015-11-17 | 2015-11-17 | Power detection circuit and gas -cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205139336U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277900A (en) * | 2015-11-17 | 2016-01-27 | 广东美的厨房电器制造有限公司 | Electric quantity detection circuit and gas-cooker |
| WO2017084436A1 (en) * | 2015-11-17 | 2017-05-26 | 广东美的厨房电器制造有限公司 | Capacity detection circuit and gas stove |
-
2015
- 2015-11-17 CN CN201520921869.XU patent/CN205139336U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277900A (en) * | 2015-11-17 | 2016-01-27 | 广东美的厨房电器制造有限公司 | Electric quantity detection circuit and gas-cooker |
| WO2017084436A1 (en) * | 2015-11-17 | 2017-05-26 | 广东美的厨房电器制造有限公司 | Capacity detection circuit and gas stove |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220909 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311 Yongan Road, Beijiao Town, Shunde District, Foshan, Guangdong 6 Patentee before: GUANGDONG MIDEA KITCHEN APPLIANCES MANUFACTURING Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |