CN212012156U - Power management circuit - Google Patents
Power management circuit Download PDFInfo
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- CN212012156U CN212012156U CN201921984244.2U CN201921984244U CN212012156U CN 212012156 U CN212012156 U CN 212012156U CN 201921984244 U CN201921984244 U CN 201921984244U CN 212012156 U CN212012156 U CN 212012156U
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Abstract
The utility model discloses a power management circuit, include: the power supply management device comprises a power supply management chip U2, a filtering module, a lighting circuit and an electric quantity display module, wherein a pin 1 of the power supply management chip U2 is connected with the filtering module; a pin 2 of the power management chip U2 is connected with a storage battery, a pin 3 of the power management chip U2 is connected with one end of an inductor L1, and the other end of the inductor L1 is connected with a pin 2 of the power management chip U2; pin 4 of the power management chip U2 is grounded; pin 5 of the power management chip U2 is connected to the lighting circuit; pin 6 of the power management chip U2 is connected to a power supply VCC; the 7 pin and the 8 pin of the power management chip U2 are connected with the power display module. The utility model discloses simple structure can realize battery charging and voltage conversion, realizes the control of battery charge and discharge to accomplish the reliable power supply to each module in the touch circuit.
Description
Technical Field
The utility model belongs to the technical field of circuit design, more specifically the utility model relates to a power management circuit that says so.
Background
The virtual reality technology is widely applied to various training due to the good experience effect of the virtual reality technology. At present, mainstream somatosensory interaction equipment mainly aims at enhancing vision and hearing, and lacks real touch and force feedback interaction experience, such as an operation handle simulation operation process, an electronic glove grabbing object and the like, which causes that an experiencer often fails to experience actions due to the fact that the touch of the actions cannot be sensed in a virtual scene, and the system experience effect is poor. It is therefore highly desirable to provide a vibration-based touch sensing circuit, in which a power supply is used as a power supply device of the touch sensing circuit, and plays a key role in realizing long-term endurance.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a power management circuit, simple structure can realize battery charging and voltage conversion, realizes the control of battery charge and discharge to accomplish the reliable power supply to each module in the touch circuit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a power management circuit, comprising: the power supply management device comprises a power supply management chip U2, a filtering module, a lighting circuit and an electric quantity display module, wherein a pin 1 of the power supply management chip U2 is connected with the filtering module; a pin 2 of the power management chip U2 is connected with a storage battery, a pin 3 of the power management chip U2 is connected with one end of an inductor L1, and the other end of the inductor L1 is connected with a pin 2 of the power management chip U2; pin 4 of the power management chip U2 is grounded; pin 5 of the power management chip U2 is connected to the lighting circuit; pin 6 of the power management chip U2 is connected with a power supply VCC; and the pin 7 and the pin 8 of the power management chip U2 are connected with the electric quantity display module.
Preferably, the filtering module includes a capacitor C1, a capacitor C2, and a capacitor C3 connected in parallel, one end of the capacitor C1, one end of the capacitor C2, and one end of the capacitor C3 are all connected to pin 1 of the power management chip U2, and the other end of the capacitor C1, the capacitor C2, and the capacitor C3 are grounded.
Preferably, the lighting circuit includes an LED lamp L2, a resistor R7, and a Key switch Key1, one end of each of the LED lamp L2 and the resistor R7 is connected to the pin 5 of the power management chip U2, the other end of the LED lamp L2 is grounded, the other end of the resistor R7 is connected to the Key switch Key1, and the other end of the Key switch Key1 is grounded.
Preferably, the power source VCC is connected with one end of a resistor R6, a capacitor C6 and a capacitor C7 which are connected in parallel, the other ends of the capacitor C6 and the capacitor C7 are both grounded, and the other end of the resistor R6 is grounded after being connected in series with a capacitor C5.
Preferably, the electric quantity display module comprises an LED lamp L3, an LED lamp L4, an LED lamp L6 and an LED lamp L7, and a pin 7 of the power management chip U2 is connected to an anode of the LED lamp L4 and to a cathode of the LED lamp L6; a pin 8 of the power management chip U2 is connected with the anode of the LED lamp L3 and the cathode of the LED lamp L7; the anodes of the LED lamp L6 and the LED lamp L7 are connected with the pin 2 of the power management chip U2; the cathodes of the LED lamp L3 and the LED lamp L4 are both grounded.
Preferably, the storage battery is grounded through a capacitor C4.
The beneficial effects of the utility model reside in that:
the utility model discloses simple structure can realize battery charging and voltage conversion, realizes battery charge and discharge control to the reliable power supply of accomplishing each module in to the sense of touch circuit provides stable electric current, the voltage that lasts for whole sense of touch circuit, makes whole sense of touch circuit can last stable work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of the present invention.
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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a power management circuit, including: the power supply management circuit comprises a power supply management chip U2, a filtering module, an illuminating circuit and an electric quantity display module, wherein a pin 1 of the power supply management chip U2 is connected with the filtering module and is used as an output end after being filtered by the filtering module; a pin 2 of the power management chip U2 is connected with a storage battery, a pin 3 of the power management chip U2 is connected with one end of an inductor L1, and the other end of the inductor L1 is connected with a pin 2 of the power management chip U2; pin 4 of the power management chip U2 is grounded; pin 5 of the power management chip U2 is connected to the lighting circuit; pin 6 of the power management chip U2 is connected to a power supply VCC; the 7 pin and the 8 pin of the power management chip U2 are connected with the power display module.
The model of the power management chip U2 adopts TP 4366.
The filtering module comprises a capacitor C1, a capacitor C2 and a capacitor C3 which are connected in parallel, one end of each of the capacitor C1, the capacitor C2 and the capacitor C3 is connected with a pin 1 of the power management chip U2, and the other end of each of the capacitors is grounded, so that the filtering effect of the output voltage is achieved.
The lighting circuit comprises an LED lamp L2, a resistor R7 and a Key switch Key1, wherein one ends of the LED lamp L2 and the resistor R7 are connected with a pin 5 of a power management chip U2, the other end of the LED lamp L2 is grounded, the other end of the resistor R7 is connected with the Key switch Key1, and the other end of the Key switch Key1 is grounded. The pin 5 of the power management chip U2 can drive the LED lamp L2 to be used for flashlight illumination, and the pin 5 of the power management chip U2 is also a Key switch pin at the same time, if the Key switch Key1 is pressed for two seconds, the flashlight is turned on, and the flashlight output is turned off after the Key switch Key1 is pressed for two seconds again.
In another embodiment, the power source VCC is connected to one end of a resistor R6, a capacitor C6 and a capacitor C7 which are connected in parallel, the other ends of the capacitor C6 and the capacitor C7 are both grounded, and the other end of the resistor R6 is grounded after being connected in series with the capacitor C5. If the input power VCC is larger than 6.5V during charging, the power management chip U2 will close the charging circuit to protect the chip as safe as possible, and resume normal charging when the power VCC drops below 5.8V.
The electric quantity display module comprises an LED lamp L3, an LED lamp L4, an LED lamp L6 and an LED lamp L7, wherein a pin 7 of a power management chip U2 is connected with the anode of the LED lamp L4 and is connected with the cathode of an LED lamp L6; a pin 8 of the power management chip U2 is connected with the anode of the LED lamp L3 and the cathode of the LED lamp L7; the anodes of the LED lamp L6 and the LED lamp L7 are connected with the pin 2 of the power management chip U2; the cathodes of the LED lamp L3 and the LED lamp L4 are both grounded. When discharging, the LED lamp L3, the LED lamp L4, the LED lamp L6 and the LED lamp L7 indicate the current electric quantity according to the battery voltage, and when the battery voltage is lower than 3.0V, the LED lamp L3 can carry out low-power alarm prompt by flashing at the frequency of 2 HZ.
In another embodiment, the storage battery is grounded through the capacitor C4, and the stability of voltage input of the storage battery is ensured.
The utility model discloses simple structure, convenient to use, the security performance is high, can realize that battery charging and voltage conversion realize the battery charge-discharge control to the reliable power supply of accomplishing each module in the circuit is felt to the touch provides stable electric current, the voltage that lasts for whole sense of touch circuit, makes whole sense of touch circuit can last stable work.
The power management chip U2 outputs stable 5V voltage and 1A current, meanwhile, the power management chip U2 also has the function of charging the storage battery, when the voltage of the storage battery is lower than 2.9V, in order to protect the storage battery, the power management chip U2 works in a trickle charging mode, and the charging current is 100 mA; when the voltage of the storage battery reaches 2.9V, the power management chip U2 enters a constant current charging mode, and the charging current is 0.8A; when the voltage of the storage battery reaches 4.2V, the power management chip U2 works in a constant voltage charging mode, the charging current is gradually reduced, and when the charging current is reduced to 100mA, the charging process is finished, and the charging current is reduced to zero. When the battery is fully charged, the LED lamp L3 flickers at the frequency of 1Hz, and after the battery is fully charged, the LED lamp L3 is always on.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A power management circuit, comprising: the power supply management device comprises a power supply management chip U2, a filtering module, a lighting circuit and an electric quantity display module, wherein a pin 1 of the power supply management chip U2 is connected with the filtering module; a pin 2 of the power management chip U2 is connected with a storage battery, a pin 3 of the power management chip U2 is connected with one end of an inductor L1, and the other end of the inductor L1 is connected with a pin 2 of the power management chip U2; pin 4 of the power management chip U2 is grounded; pin 5 of the power management chip U2 is connected to the lighting circuit; pin 6 of the power management chip U2 is connected with a power supply VCC; and the pin 7 and the pin 8 of the power management chip U2 are connected with the electric quantity display module.
2. The power management circuit as claimed in claim 1, wherein the filtering module comprises a capacitor C1, a capacitor C2 and a capacitor C3 connected in parallel, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 are all connected to pin 1 of the power management chip U2, and the other end of the capacitor C1, the capacitor C2 and the other end of the capacitor C3 are connected to ground.
3. The power management circuit according to claim 1, wherein the lighting circuit comprises an LED lamp L2, a resistor R7 and a Key switch Key1, one end of each of the LED lamp L2 and the resistor R7 is connected to pin 5 of the power management chip U2, the other end of the LED lamp L2 is grounded, the other end of the resistor R7 is connected to the Key switch Key1, and the other end of the Key switch Key1 is grounded.
4. The power management circuit according to claim 1, wherein the power VCC is connected to one end of a resistor R6, a capacitor C6 and a capacitor C7 connected in parallel, the other ends of the capacitor C6 and the capacitor C7 are both grounded, and the other end of the resistor R6 is connected in series with a capacitor C5 and then grounded.
5. The power management circuit according to claim 1, wherein the power display module comprises an LED lamp L3, an LED lamp L4, an LED lamp L6 and an LED lamp L7, and the pin 7 of the power management chip U2 is connected to the positive pole of the LED lamp L4 and to the negative pole of the LED lamp L6; a pin 8 of the power management chip U2 is connected with the anode of the LED lamp L3 and the cathode of the LED lamp L7; the anodes of the LED lamp L6 and the LED lamp L7 are connected with the pin 2 of the power management chip U2; the cathodes of the LED lamp L3 and the LED lamp L4 are both grounded.
6. A power management circuit according to claim 1 or 5, wherein the battery is connected to ground via a capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921984244.2U CN212012156U (en) | 2019-11-16 | 2019-11-16 | Power management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921984244.2U CN212012156U (en) | 2019-11-16 | 2019-11-16 | Power management circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212012156U true CN212012156U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921984244.2U Active CN212012156U (en) | 2019-11-16 | 2019-11-16 | Power management circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212012156U (en) |
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2019
- 2019-11-16 CN CN201921984244.2U patent/CN212012156U/en active Active
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