CN211880114U - Energy-saving circuit powered by lithium battery and power-saving intelligent wearable device - Google Patents
Energy-saving circuit powered by lithium battery and power-saving intelligent wearable device Download PDFInfo
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- CN211880114U CN211880114U CN201922476031.5U CN201922476031U CN211880114U CN 211880114 U CN211880114 U CN 211880114U CN 201922476031 U CN201922476031 U CN 201922476031U CN 211880114 U CN211880114 U CN 211880114U
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- lithium battery
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- triode
- switch
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 66
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 230000006698 induction Effects 0.000 claims abstract description 20
- 230000001939 inductive effect Effects 0.000 abstract description 12
- 230000003111 delayed effect Effects 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The embodiment of the utility model discloses an energy-saving circuit powered by a lithium battery and a power-saving intelligent wearable device, which comprises a microcontroller, wherein a power supply voltage end of the microcontroller is connected with the anode of the lithium battery; the vibration induction switch is connected between a power supply voltage end of the microcontroller and the anode of the lithium battery and is closed during vibration; the second end of the vibration induction switch is connected with the input end of the microcontroller; the triode, microcontroller's output is connected to the base of triode, and the positive pole of lithium cell is connected to the collecting electrode of triode, and microcontroller's mains voltage end is connected to the projecting pole of triode, the utility model discloses a vibration inductive switch and microcontroller control triode formula switch are closed to make the lithium cell power supply, and microcontroller control triode formula switch disconnection when vibration inductive switch does not vibrate, the power supply of disconnection lithium cell is applicable to intelligent wearing equipment, but the auto-power-off has saved the electric energy, and simple structure is with low costs.
Description
Technical Field
The utility model relates to a battery field especially relates to an energy-conserving circuit of lithium cell power supply and intelligent wearing equipment of power saving.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. Due to its own high technical requirement limits, only a few countries of companies are producing such lithium metal batteries.
The conventional lithium battery power supply equipment needs to be manually turned off when not in use, and the electric quantity of a lithium battery is wasted when a user forgets to turn off the lithium battery. The existing intelligent detection equipment can be automatically shut down, but generally needs to actively set a shutdown program, and power failure is closed when conditions are met, so that the circuit structure is complex, and the cost is high.
Disclosure of Invention
An object of the utility model is to provide an energy-conserving circuit of lithium cell power supply and intelligent wearing equipment of power saving solve above technical problem.
The utility model provides a technical problem can adopt following technical scheme to realize:
an energy-saving circuit for lithium battery power supply comprises
The power supply voltage end of the microcontroller is connected with the anode of a lithium battery;
the vibration induction switch is connected between the power supply voltage end of the microcontroller and the anode of the lithium battery and is closed during vibration;
the first end of the vibration sensing switch is connected with the anode of the lithium battery, the second end of the vibration sensing switch is connected with the power supply voltage end of the microcontroller, and a reference point between the second end of the vibration sensing switch and the power supply voltage end of the microcontroller is connected with the input end of the microcontroller;
the base electrode of the triode is connected with the output end of the microcontroller, the collector electrode of the triode is connected with the anode of the lithium battery, and the emitter electrode of the triode is connected with the power supply voltage end of the microcontroller.
Preferably, a current limiting resistor is connected between the second end of the vibration sensor and the input end of the microcontroller.
Preferably, the second end of the vibration sensor is connected to a ground terminal through a protection resistor.
Preferably, the transistor is an NPN transistor.
Preferably, a load is connected between the positive electrode of the lithium battery and the collector of the triode.
Preferably, when the vibration sensing switch is closed, the current of the lithium battery is input to a power supply voltage end of the microcontroller, and the microcontroller is started.
Preferably, when the microcontroller is started, the output end of the microcontroller outputs a first level to conduct the collector of the triode and the emitter current of the triode;
when the microcontroller is powered off, the output end of the microcontroller outputs a second level to disconnect the current of the collector of the triode and the current of the emitter of the triode.
Preferably, the vibration sensing switch is a time-delay power-off switch, and the microcontroller controls the time-delay power-off of the vibration sensing switch.
Preferably, the second terminal of the vibration sensing switch sends a vibration signal to the input terminal of the microcontroller.
Additionally, the utility model also provides an intelligence wearing equipment of power saving, including above-mentioned arbitrary one lithium cell power supply's energy-conserving circuit.
Has the advantages that: the utility model discloses a closed messenger microcontroller starts when vibration inductive switch vibrates, makes microcontroller control triode formula switch closed to make lithium battery powered, and microcontroller control lithium cell triode formula switch disconnection when vibration inductive switch does not vibrate, thereby make the disconnection of lithium battery supply circuit, be applicable to intelligent wearing equipment, but the auto-power-off has saved the electric energy, simple structure, and is with low costs.
Drawings
Fig. 1 is a circuit block diagram of the energy saving circuit of the present invention;
fig. 2 is a current flow direction and signal flow direction diagram of the energy-saving circuit of the present invention.
In the figure: 1-vibration induction switch; 2-a microcontroller; 3-a triode; 4-a lithium battery; 5-a current limiting resistor; 6-protective resistance; 7-load.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
As shown in FIG. 1, the utility model provides an energy-saving circuit for lithium battery power supply, include
The power supply voltage end of the microcontroller is connected with the anode of the lithium battery 4;
a vibration sensing switch 1 which is closed when vibrating; the first end of the vibration induction switch 1 is connected with the anode of the lithium battery 4, and the second end of the vibration induction switch 1 is connected with the power supply voltage end of the microcontroller 2;
the second end of the vibration induction switch is connected with the input end of the microcontroller;
the first end of the vibration induction switch is connected with the anode of the lithium battery, the second end of the vibration induction switch is connected with the power supply voltage end of the microcontroller, and a reference point a between the second end of the vibration induction switch and the power supply voltage end of the microcontroller is connected with the input end of the microcontroller;
and the base electrode of the triode 3 is connected with the output end of the microcontroller 2, the collector electrode of the triode 3 is connected with the anode of the lithium battery 4, and the emitter electrode of the triode 3 is connected with the power supply voltage end of the microcontroller 2.
The utility model has the advantages that:
the utility model discloses a closed messenger microcontroller starts when vibration inductive switch vibrates, makes microcontroller control triode formula switch closed to make lithium battery powered, and microcontroller control lithium cell triode formula switch disconnection when vibration inductive switch does not vibrate, thereby make the disconnection of lithium battery supply circuit, be applicable to intelligent wearing equipment, but the auto-power-off has saved the electric energy, and simple structure is with low costs.
As a preferred embodiment of the present invention, the transistor 3 is an NPN transistor.
As a preferred embodiment of the present invention, the microcontroller 2 is activated when the vibration sensitive switch 1 is closed.
As a preferred embodiment of the present invention, when the vibration sensing switch 1 is closed, the current of the lithium battery 4 is inputted to the power supply voltage terminal of the microcontroller 2, and the microcontroller 2 is started.
As a preferred embodiment of the present invention, when the microcontroller 2 is started, the output terminal of the microcontroller 2 outputs a first level, so that the collector of the triode 3 is conducted with the emitter current of the triode 3;
when the microcontroller 2 is powered off, the output end of the microcontroller 2 outputs a second level to disconnect the current of the collector of the triode 3 and the current of the emitter of the triode 3.
The base electrode level of the triode is controlled through the micro-micro controller 2, so that the on-off of the collector electrode and the emitter electrode of the triode is controlled, and the effect of switching the triode is achieved.
As a preferred embodiment of the present invention, the second end of the vibration sensing switch 1 sends a vibration signal to the input of the microcontroller. The microcontroller judges whether a vibration signal exists according to whether the input voltage changes, and if the input electric signal of the input end of the microcontroller is continuously unchanged, no vibration signal is generated.
As an optimized embodiment of the present invention, a current limiting resistor 5 is disposed between the reference point a and the input end of the microcontroller, so that the input voltage of the microcontroller 2 is too high when the vibration sensing switch 1 transmits the vibration signal, and the microcontroller 2 is protected from being damaged.
As a preferred embodiment of the present invention, the vibration sensing switch 1 sends a vibration signal to the microcontroller 2, and the microcontroller 2 outputs a level that makes the transistor 3 in a saturation state.
As a preferred embodiment of the present invention, a protection resistor 6 is connected between the reference point a and the ground terminal. As can be seen from the figure, when the microcontroller 2 is started, one of the currents output from the power voltage terminal of the microcontroller flows to the ground terminal, and the protection resistor 6 is disposed to avoid short circuit. After the protection resistor 6 is arranged, the output current of the power supply voltage of the microcontroller is divided into the vibration sensing switch 1 at the reference point a, so that the vibration sensing switch 1 is controlled.
As a preferred embodiment of the utility model, vibration inductive switch 1 is time delay power-off switch, and the time delay outage is avoided causing the damage of switch and microcontroller because of the vibration makes the switch break-make repeatedly. The microcontroller 2 controls the vibration induction switch to be powered off in a delayed mode. The delayed power-off time can be freely set according to the situation of the intelligent equipment or the actual requirement. Generally, the delayed power-off time is that when the microcontroller 2 does not receive the vibration signal of the vibration induction switch 1 for a period of time, such as 1-5 minutes, the microcontroller 2 controls the vibration induction switch 1 to be powered off, so that the electric energy of the lithium battery is saved.
As a preferred embodiment of the present invention, a load 7 is provided between the positive electrode of the lithium battery 4 and the collector of the triode 3. When the collector and emitter of the transistor 3 are turned on, the power supply circuit of the load is turned on, and the load 7 is supplied with power from the lithium battery 4.
For easy understanding of the circuit principle of the energy saving circuit of the present invention, the following is explained with reference to fig. 2:
as shown in fig. 2, S in the figure is a vibration sensing switch; the CPU is a microcontroller 2, and VCC is a power supply voltage end of the microcontroller; vin is the input end of the microcontroller 2, and Vout is the output end of the microcontroller 2; q1 is a triode 3, B, C, E is a base electrode, a collector electrode and an emitter electrode of the triode 3 respectively; r1 is a current limiting resistor 5; r2 is a protective resistor 6; RL is the load 7 and a is the reference point.
(1) When microcontroller 2 did not start, when vibration inductive switch 1 did not have the vibration signal to spread yet, microcontroller 2 was in the outage state, and the lithium cell is not supplied power.
(2) Vibration inductive switch 1 is closed when vibrating, and lithium cell 4 switches on microcontroller 2's supply circuit this moment, and the current flow direction is in proper order this moment:
the positive pole of the lithium battery → S → a → VCC, the microcontroller 2 is powered on and started.
Microcontroller starts the back, and output a first level (indicates the level that makes the triode be in the saturated condition) to the base of triode, and the triode is in the saturated condition this moment, and collecting electrode and projecting pole switch on, are equivalent to the triode switch closure, and load 7's supply circuit switches on this moment, and the supply current flow direction is in proper order this moment:
a microcontroller circuit: vout → B;
a load circuit: lithium battery positive electrode → RL → C → E → b → a → R2 → GND.
Meanwhile, the vibration sensing switch transmits a vibration signal to the microcontroller, and the transmission route is S → a → R1 → Vin, the solid arrow in fig. 2 represents the flow path of the current, and the dotted curved arrow line represents the transmission path of the signal.
When the microcontroller receives the vibration signal, the microcontroller sends a control signal to control the vibration induction switch to keep a closed state for a period of time, namely the closing time of the vibration induction switch is prolonged when no vibration signal exists; the transmission path of the control signal is as follows: VCC → a → S;
the current of VCC flows in two paths:
VCC→a→S；
VCC→a→R1→Vin；
namely, one path flows to the vibration sensing switch, and the other path flows to the input end of the microcontroller.
Because the vibration sensing switch 1 is turned off after being closed, the circuit is temporarily turned on when the vibration sensing switch 1 does not vibrate. At this time, if the vibration sensing switch 1 vibrates, the current or voltage input to the input end of the microcontroller by the vibration sensing switch will inevitably change, and at this time, the microcontroller judges that the vibration signal is received, and the power-off time is delayed.
(3) When the vibration inductive switch keeps not sending vibration signals for a period of time and gives micro control, the microcontroller controls the vibration inductive switch to be disconnected for a period of time in a delayed mode, after the vibration inductive switch is disconnected, the microcontroller is powered off, the base electrode of the triode is at a low level, the collector and the emitter are disconnected at the moment, the load is disconnected, all electric devices are powered off, the lithium battery stops supplying power, the electric quantity is kept, and the electric energy is saved.
Additionally, the utility model also provides an intelligent wearing equipment of power saving, including the energy-conserving circuit of an above-mentioned arbitrary lithium cell power supply. When the intelligent equipment is worn, the vibration induction switch can be switched on and emit vibration signals, so that the microcontroller controls the triode switch to be switched on, and the load is supported by electric power.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. An energy-saving circuit powered by lithium battery is characterized by comprising
The power supply voltage end of the microcontroller is connected with the anode of a lithium battery;
the vibration induction switch is connected between the power supply voltage end of the microcontroller and the anode of the lithium battery and is closed during vibration;
the first end of the vibration induction switch is connected with the anode of the lithium battery, the second end of the vibration induction switch is connected with the power supply voltage end of the microcontroller, and a reference point between the second end of the vibration induction switch and the power supply voltage end of the microcontroller is connected with the input end of the microcontroller;
the base electrode of the triode is connected with the output end of the microcontroller, the collector electrode of the triode is connected with the anode of the lithium battery, and the emitter electrode of the triode is connected with the power supply voltage end of the microcontroller.
2. The lithium battery powered energy saving circuit of claim 1, wherein a current limiting resistor is connected between the second terminal of the vibration sensing switch and the input terminal of the microcontroller.
3. The lithium battery powered energy saving circuit of claim 1, wherein the second terminal of the vibration sensing switch is connected to a ground terminal through a protection resistor.
4. The lithium battery powered energy saving circuit of claim 1, wherein the transistor is an NPN transistor.
5. A lithium battery powered energy saving circuit as claimed in claim 1, wherein a load is connected between the positive electrode of the lithium battery and the collector of the transistor.
6. The lithium battery powered energy saving circuit of claim 1, wherein when the vibration sensing switch is closed, the current of the lithium battery is input to a power voltage end of a microcontroller, and the microcontroller is started.
7. The lithium battery powered energy saving circuit of claim 6, wherein when the microcontroller is started, the output terminal of the microcontroller outputs a first level to conduct the collector of the transistor with the emitter current of the transistor;
when the microcontroller is powered off, the output end of the microcontroller outputs a second level to disconnect the current of the collector of the triode and the current of the emitter of the triode.
8. The lithium battery powered energy saving circuit of claim 1, wherein the vibration sensing switch is a time-delay power-off switch, and the microcontroller controls the time-delay power-off of the vibration sensing switch.
9. The lithium battery powered energy saving circuit of claim 1, wherein the second terminal of the vibration sensing switch sends a vibration signal to the input terminal of the microcontroller.
10. An electricity-saving intelligent wearable device, which is characterized by comprising the energy-saving circuit powered by the lithium battery of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922476031.5U CN211880114U (en) | 2019-12-31 | 2019-12-31 | Energy-saving circuit powered by lithium battery and power-saving intelligent wearable device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922476031.5U CN211880114U (en) | 2019-12-31 | 2019-12-31 | Energy-saving circuit powered by lithium battery and power-saving intelligent wearable device |
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| CN211880114U true CN211880114U (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114191595A (en) * | 2021-11-11 | 2022-03-18 | 无锡晶哲科技有限公司 | Wearable air purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114191595A (en) * | 2021-11-11 | 2022-03-18 | 无锡晶哲科技有限公司 | Wearable air purifier |
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