CN113517748A - Power management system, power management chip and hand-held beauty instrument - Google Patents
Power management system, power management chip and hand-held beauty instrument Download PDFInfo
- Publication number
- CN113517748A CN113517748A CN202111063019.7A CN202111063019A CN113517748A CN 113517748 A CN113517748 A CN 113517748A CN 202111063019 A CN202111063019 A CN 202111063019A CN 113517748 A CN113517748 A CN 113517748A
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- power management
- reset
- capacitor
- charging
- circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of power management, and discloses a power management system, a power management chip and a handheld beauty instrument, wherein the power management system is used for supplying power and resetting a working system, and comprises: a power supply electrically connected to the operating system; a charging circuit electrically connected to a power supply; the reset circuit is electrically connected with the charging circuit and the working system respectively; and the change-over switch is arranged between the power supply and the working system and between the reset circuit and the working system. When charging for the power on charging circuit expert, can inputing simultaneously the signal of telecommunication to reset circuit in, make reset circuit with the disconnection of being connected between power and the operating system to make operating system accomplish and reset, need not to set up the button like this, need not to set up the through-hole on the casing, thereby improve waterproof nature, and integrate charging circuit and reset circuit together, reduce the required space that occupies, thereby can reduce the volume of intelligent electrical apparatus greatly.
Description
Technical Field
The invention relates to the technical field of power management, in particular to a power management system, a power management chip and a handheld beauty instrument.
Background
For intelligent electrical appliances, the intelligent electrical appliances are increasingly used in the life of people, and a reset function needs to be realized by adding a physical key or a mechanical switch to a reset circuit during design.
In the prior art, the reset function is realized through the button, and through the switch of doing a reset on the PCB board of intelligence electrical apparatus the inside, need set up a through-hole on the casing so that the switch passes through, requires under waterproof prerequisite at electrical apparatus, can bring the puzzlement of waterproof design demand for research and development like this, also can increase the promotion of cost and the design degree of difficulty of product research and development simultaneously.
Disclosure of Invention
The invention mainly aims to provide a power management system, a power management chip and a handheld beauty instrument, and aims to solve the technical problems of bringing waterproof design requirements to research and development, increasing cost and increasing design difficulty of product research and development.
To achieve the above object, the present invention provides a power management system for supplying and resetting a working system, the power management system comprising:
the power supply is electrically connected with the working system and supplies power to the working system;
the charging circuit is electrically connected with the power supply and charges the power supply;
the reset circuit is electrically connected with the charging circuit and the working system respectively;
the change-over switch is arranged between the power supply and the working system and between the reset circuit and the working system;
when the charging circuit is powered on to charge the power supply, an electric signal is transmitted to the reset circuit, and the reset circuit is powered on and controls the change-over switch to disconnect the power supply from the working system.
Further, in an embodiment, the reset circuit includes a reset module, and the reset module includes a reset time control unit, and the reset time control unit controls the reset time of the operating system.
Further, in an embodiment, the reset circuit further includes a first capacitor, one end of the first capacitor is grounded, and the other end of the first capacitor is electrically connected to the reset time control unit, so as to control the reset time of the operating system by adjusting the voltage of the first capacitor.
Further, in an embodiment, the charging circuit includes a charging module, and the charging module is a programmable module, and the charging current of the charging module is adjusted by programming.
Further, in an embodiment, the charging circuit includes a charging module and a second capacitor, one end of the second capacitor is connected to the input end of the charging module, and the other end of the second capacitor is grounded.
Further, in an embodiment, the charging circuit includes a charging module and a third capacitor, one end of the third capacitor is connected to the output end of the charging module, and the other end of the third capacitor is grounded.
Further, in an embodiment, the switch is an N-type MOS transistor.
Further, in an embodiment, the switch is a P-type MOS transistor.
The invention also provides a power management chip, which comprises a substrate and the power management system, wherein the power management system is laid on the substrate.
The invention also provides a handheld beauty instrument which comprises a shell and a power management chip, wherein the power management chip is arranged in the shell.
According to the technical scheme provided by the invention, the charging circuit is associated with the reset circuit, when the charging circuit is electrified to charge the power supply, an electric signal is simultaneously input into the reset circuit, so that the reset circuit disconnects the connection between the power supply and the working system, and the working system is reset, thus a key is not required to be arranged, a through hole is not required to be formed in the shell, the waterproofness is improved, the charging circuit and the reset circuit are integrated, the occupied space is reduced, and the size of the intelligent electric appliance can be greatly reduced.
Drawings
One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.
FIG. 1 is a schematic diagram of a power management system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a reset module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reset module according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a power management chip according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a hand-held beauty instrument according to an embodiment of the invention.
100, a power management system; 110. a power source; 120. a charging circuit; 121. a charging module; 122. a second capacitor; 123. a third capacitor; 130. a reset circuit; 131. a reset module; 132. a reset time control unit; 133. a potentiometer; 134. a comparator; 135. a reference voltage element; 136. a first capacitor; 140. a switch; 200. a working system; 300. a power management chip; 310. a substrate; 400. a hand-held cosmetic instrument; 410. a housing.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an embodiment of the present invention discloses a power management system 100, where the power management system 100 is used to supply power and reset to an operating system 200, and the power management system 100 includes a power supply 110, a charging circuit 120, a reset circuit 130, and a switch 140; the power supply 110 is electrically connected to the working system 200 to supply power to the working system 200; the charging circuit 120 is electrically connected to the power supply 110 to charge the power supply 110; the reset circuit 130 is electrically connected to the charging circuit 120 and the operating system 200 respectively; the switch 140 is disposed between the power source 110 and the operating system 200, and between the reset circuit 130 and the operating system 200; when the charging circuit 120 is powered on to charge the power source 110, an electrical signal is transmitted to the reset circuit 130, and the reset circuit 130 is powered on and controls the switch 140 to disconnect the power source 110 from the operating system 200.
In this embodiment, through associating charging circuit 120 and reset circuit 130, when charging circuit 120 switches on to charge for power 110, simultaneously input signal of telecommunication to reset circuit 130, make reset circuit 130 with the disconnection between power 110 and the operating system 200, thereby make operating system 200 accomplish and reset, need not to set up the button like this, need not to set up the through-hole on casing 410, thereby improve waterproof nature, and integrate charging circuit 120 and reset circuit 130 together, reduce required space that occupies, thereby can reduce the volume of intelligent electrical apparatus greatly.
As shown in fig. 1 and fig. 2, in an embodiment, the reset circuit 130 includes a reset module 131, where the reset module 131 is a module that receives an electrical signal and outputs a high level, and the reset module 131 outputs a high level after an input terminal of the reset module 131 receives the electrical signal; the switch 140 is a P-type MOS transistor, and the output end of the reset module 131 is connected to the gate of the P-type MOS transistor. Because the P-type MOS transistor is turned on at a low level and turned off at a high level, when the charging circuit 120 is turned on and transmits an electrical signal to the reset circuit 130, the input terminal of the reset module 131 generates a high level after receiving the electrical signal and outputs the high level to the P-type MOS transistor, so that the P-type MOS transistor is turned off, and the working system 200 and the power supply 110 are disconnected, so that the working system 200 is reset, and thus, a button is not required to be arranged, a through hole is not required to be formed in the housing 410, and the waterproof property is improved.
Specifically, as shown in fig. 2, the reset module 131 further includes a potentiometer 133, a comparator 134, a reference voltage element 135, and a reset time control unit 132, wherein a positive input terminal (+) of the comparator 134 is connected to the input terminal of the reset module 131 through the potentiometer 133, a positive input terminal (+) of the comparator 134 is connected to the ground through the potentiometer 133, an inverting input terminal (-) of the operational amplifier is connected to the reference voltage element 135, the other terminal of the reference voltage element 135 is connected, an output terminal of the comparator 134 is connected to the reset time control unit 132, the other terminal of the reset time control unit 132 is connected to the output terminal of the reset module 131, and the reset time control unit 132 controls the reset time of the operating system 200. When the input voltage at the non-inverting input terminal (+) of the comparator 134 is higher than the voltage at the inverting input terminal (-), the comparator 134 outputs a high level, when the input voltage at the non-inverting input terminal (+) of the comparator 134 is lower than the voltage at the inverting input terminal (-), the comparator 134 outputs a low level, the comparator 134 compares the received electrical signal with the voltage value of the reference voltage element 135, when the reset module 131 receives the electrical signal, the input voltage at the non-inverting input terminal (+) of the comparator 134 is higher than the voltage at the inverting input terminal (-), that is, the comparator 134 outputs a high level, and the high level is controlled by the reset time control unit 132 and then output to the P-type MOS transistor, so that the P-type MOS transistor is disconnected, so that the connection between the operating system 200 and the power supply 110 is disconnected, thereby resetting the operating system 200 is completed, and thus no key needs to be provided, no through hole needs to be formed in the housing 410, thereby improving the waterproof property.
Further, the reset circuit 130 further includes a first capacitor 136, one end of the first capacitor 136 is grounded, and the other end of the first capacitor 136 is electrically connected to the reset time control unit 132, so that the reset time control unit 132 is controlled to stop transmitting the electrical signal within a preset time by adjusting the voltage of the first capacitor 136, thereby controlling the reset time of the working system 200.
As shown in fig. 1 and 3, in another embodiment, the reset circuit 130 includes a reset module 131, the reset module 131 is a module that receives an electrical signal and outputs a low level, and the reset module 131 outputs a low level after an input terminal of the reset module 131 receives the electrical signal; the switch 140 is an N-type MOS transistor, and the output terminal of the reset module 131 is connected to the gate of the N-type MOS transistor. Because the N-type MOS transistor is turned on at a high level and turned off at a low level, when the charging circuit 120 is turned on and transmits an electrical signal to the reset circuit 130, the input terminal of the reset module 131 generates a low level after receiving the electrical signal and outputs the electrical signal to the N-type MOS transistor, so that the N-type MOS transistor is turned off, and the working system 200 and the power supply 110 are disconnected, thereby resetting the working system 200.
Specifically, as shown in fig. 3, the reset module 131 further includes a potentiometer 133, a comparator 134, a reference voltage element 135, and a reset time control unit 132, wherein an inverting input (-) of the comparator 134 is connected to the input of the reset module 131 through the potentiometer 133, an inverting input (-) of the comparator 134 is connected to the ground through the potentiometer 133, a non-inverting input (+) of the operational amplifier is connected to the reference voltage element 135, the other end of the reference voltage element 135 is connected, an output of the comparator 134 is connected to the reset time control unit 132, the other end of the reset time control unit 132 is connected to the output of the reset module 131, and the reset time control unit 132 controls the reset time of the working system 200. When the input voltage at the non-inverting input terminal (+) of the comparator 134 is higher than the voltage at the inverting input terminal (-), the comparator 134 outputs a high level, when the input voltage at the non-inverting input terminal (+) of the comparator 134 is lower than the voltage at the inverting input terminal (-), the comparator 134 outputs a low level, the comparator 134 compares the received electrical signal with the voltage value of the reference voltage element 135, when the reset module 131 receives the electrical signal, the input voltage at the non-inverting input terminal (+) of the comparator 134 is lower than the voltage at the inverting input terminal (-), that is, the comparator 134 outputs a low level, and the low level is controlled by the reset time control unit 132 and then output to the N-type MOS transistor, so that the N-type MOS transistor is disconnected, so that the connection between the operating system 200 and the power supply 110 is disconnected, thereby resetting the operating system 200 is completed, thus no key needs to be provided, no through hole needs to be formed in the housing 410, thereby improving the waterproof property.
Further, the reset circuit 130 further includes a first capacitor 136, one end of the first capacitor 136 is grounded, and the other end of the first capacitor 136 is electrically connected to the reset time control unit 132, so that the reset time control unit 132 is controlled to stop transmitting the electrical signal within a preset time by adjusting the voltage of the first capacitor 136, thereby controlling the reset time of the working system 200.
In an embodiment, the charging circuit 120 includes a charging module 121, a second capacitor 122, and a third capacitor 123, where the charging module 121 is a programmable module, and the charging current of the charging module 121 is adjusted by programming; one end of the second capacitor 122 is connected to the input end of the charging module 121, and the other end of the second capacitor 122 is grounded; one end of the third capacitor 123 is connected to the output end of the charging module 121, and the other end of the third capacitor 123 is grounded. The input end and the output end of the charging module 121 are grounded through being connected with a capacitor respectively, and ripples in the circuit are filtered through capacitor filtering.
Further, the charging module 121 is a programmable module, and the charging current of the charging module 121 is adjusted by programming.
As shown in fig. 4, an embodiment of the present invention discloses a power management chip 300, where the power management chip 300 includes a substrate 310 and a power management system 100, and the power management system 100 is laid on the substrate 310; the power management system 100 is used for supplying power and resetting to the working system 200, and the power management system 100 includes a power supply 110, a charging circuit 120, a resetting circuit 130 and a switch 140; the power supply 110 is electrically connected to the working system 200 to supply power to the working system 200; the charging circuit 120 is electrically connected to the power supply 110 to charge the power supply 110; the reset circuit 130 is electrically connected to the charging circuit 120 and the operating system 200 respectively; the switch 140 is disposed between the power source 110 and the operating system 200, and between the reset circuit 130 and the operating system 200; when the charging circuit 120 is powered on to charge the power source 110, an electrical signal is transmitted to the reset circuit 130, and the reset circuit 130 is powered on and controls the switch 140 to disconnect the power source 110 from the operating system 200.
In this embodiment, through associating charging circuit 120 and reset circuit 130, when charging circuit 120 switches on to charge for power 110, simultaneously input signal of telecommunication to reset circuit 130, make reset circuit 130 break off the connection between power 110 and the operating system 200, thereby make operating system 200 accomplish and reset, need not to set up the button like this, need not to set up the through-hole on casing 410, thereby improve waterproof nature, and integrate charging circuit 120 and reset circuit 130 together, simplify to a chip and can satisfy the demand of required function, reduce required space that occupies, thereby can reduce the volume of intelligent electrical apparatus greatly, and reduce software and hardware design cycle and the degree of difficulty by a wide margin.
As shown in fig. 5, the embodiment of the present invention discloses a hand-held beauty instrument 400, wherein the hand-held beauty instrument 400 includes a housing 410 and a power management chip 300, the power management chip 300 is disposed in the housing 410; the power management chip 300 comprises a substrate 310 and a power management system 100, wherein the power management system 100 is laid on the substrate 310; the power management system 100 is used for supplying power and resetting to the working system 200, and the power management system 100 comprises a power supply 110, a charging circuit 120, a resetting circuit 130 and a change-over switch 140; the power supply 110 is electrically connected to the working system 200 to supply power to the working system 200; the charging circuit 120 is electrically connected to the power supply 110 to charge the power supply 110; the reset circuit 130 is electrically connected to the charging circuit 120 and the operating system 200 respectively; the switch 140 is disposed between the power source 110 and the operating system 200, and between the reset circuit 130 and the operating system 200; when the charging circuit 120 is powered on to charge the power source 110, an electrical signal is transmitted to the reset circuit 130, and the reset circuit 130 is powered on and controls the switch 140 to disconnect the power source 110 from the operating system 200.
Since the hand-held cosmetic apparatus 400 is always in contact with water during operation, the requirement for the waterproof performance of the hand-held cosmetic apparatus 400 is very high, and the conventional reset function of the hand-held cosmetic apparatus 400 is realized by performing a reset switch on a PCB inside an intelligent electrical appliance, and a through hole needs to be formed in the case 410 to allow the switch to pass through, so that the waterproof performance is greatly reduced and the requirement is difficult to be met, in this embodiment, by associating the charging circuit 120 with the reset circuit 130, when the charging circuit 120 is powered on to charge the power source 110, an electrical signal is simultaneously input into the reset circuit 130, so that the reset circuit 130 disconnects the connection between the power source 110 and the operating system 200, thereby the operating system 200 is reset, so that no button needs to be arranged, and no through hole needs to be formed in the case 410 of the hand-held cosmetic apparatus 400, thereby greatly improving the waterproof performance of the hand-held cosmetic apparatus 400, and the charging circuit 120 and the reset circuit 130 are integrated together, so as to simplify the structure into a chip and meet the requirements of the required functions, thereby reducing the occupied space, greatly reducing the volume of the handheld beauty instrument 400, and greatly reducing the design period and difficulty of software and hardware.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A power management system for powering and resetting an operating system, the power management system comprising:
the power supply is electrically connected with the working system and supplies power to the working system;
the charging circuit is electrically connected with the power supply and charges the power supply;
the reset circuit is electrically connected with the charging circuit and the working system respectively;
the change-over switch is arranged between the power supply and the working system and between the reset circuit and the working system;
when the charging circuit is powered on to charge the power supply, an electric signal is transmitted to the reset circuit, and the reset circuit is powered on and controls the change-over switch to disconnect the power supply from the working system.
2. The power management system according to claim 1, wherein the reset circuit includes a reset module including a reset time control unit by which a reset time of the operating system is controlled.
3. The power management system according to claim 2, wherein the reset circuit further comprises a first capacitor, one end of the first capacitor is grounded, the other end of the first capacitor is electrically connected to the reset time control unit, and the reset time of the operating system is controlled by adjusting the voltage of the first capacitor.
4. The power management system of claim 1, wherein the charging circuit comprises a charging module, and the charging module is a programmable module, and the charging current of the charging module is adjusted by programming.
5. The power management system of claim 1, wherein the charging circuit comprises a charging module and a second capacitor, one end of the second capacitor is connected to the input end of the charging module, and the other end of the second capacitor is grounded.
6. The power management system of claim 1, wherein the charging circuit comprises a charging module and a third capacitor, one end of the third capacitor is connected to the output end of the charging module, and the other end of the third capacitor is grounded.
7. The power management system of claim 1, wherein the switch is an N-type MOS transistor.
8. The power management system of claim 1, wherein the switch is a P-type MOS transistor.
9. A power management chip, comprising a substrate and the power management system of any one of claims 1-8, wherein the power management system is disposed on the substrate.
10. A hand-held cosmetic device comprising a housing and the power management chip of claim 9 disposed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063019.7A CN113517748A (en) | 2021-09-10 | 2021-09-10 | Power management system, power management chip and hand-held beauty instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063019.7A CN113517748A (en) | 2021-09-10 | 2021-09-10 | Power management system, power management chip and hand-held beauty instrument |
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| Publication Number | Publication Date |
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| CN113517748A true CN113517748A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111063019.7A Pending CN113517748A (en) | 2021-09-10 | 2021-09-10 | Power management system, power management chip and hand-held beauty instrument |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000332586A (en) * | 1999-05-20 | 2000-11-30 | Hitachi Ltd | Power-on reset circuit |
| CN204155207U (en) * | 2014-10-29 | 2015-02-11 | 广州位码付信息科技有限公司 | A kind of reset circuit of wearable device |
| CN205195679U (en) * | 2015-12-16 | 2016-04-27 | 歌尔声学股份有限公司 | Hardware reset circuit and electronic product |
| CN108551338A (en) * | 2018-04-28 | 2018-09-18 | 歌尔科技有限公司 | A kind of reset circuit and portable electronic product |
| CN112433890A (en) * | 2020-12-11 | 2021-03-02 | 南昌勤胜电子科技有限公司 | Reset circuit, chip and electronic product |
-
2021
- 2021-09-10 CN CN202111063019.7A patent/CN113517748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000332586A (en) * | 1999-05-20 | 2000-11-30 | Hitachi Ltd | Power-on reset circuit |
| CN204155207U (en) * | 2014-10-29 | 2015-02-11 | 广州位码付信息科技有限公司 | A kind of reset circuit of wearable device |
| CN205195679U (en) * | 2015-12-16 | 2016-04-27 | 歌尔声学股份有限公司 | Hardware reset circuit and electronic product |
| CN108551338A (en) * | 2018-04-28 | 2018-09-18 | 歌尔科技有限公司 | A kind of reset circuit and portable electronic product |
| CN112433890A (en) * | 2020-12-11 | 2021-03-02 | 南昌勤胜电子科技有限公司 | Reset circuit, chip and electronic product |
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Application publication date: 20211019 |