CN113162370A

CN113162370A - Pressure increasing and reducing control system and method of portable equipment, medium and tooth flushing device

Info

Publication number: CN113162370A
Application number: CN202110455511.2A
Authority: CN
Inventors: 岳鹏磊; 罗俊福; 陈浩; 陆志艳; 张彦博
Original assignee: Shanghai Feixiang Health Technology Co Ltd
Current assignee: Guangdong Beizhi Health Technology Co ltd; Shanghai Feixiang Health Technology Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-07-23
Anticipated expiration: 2041-04-26
Also published as: CN113162370B

Abstract

The application provides portable equipment's rise and fall and press control system, method, medium and towards tooth ware includes: a buck-boost module; the voltage regulation module, the control module, the battery module and the driving module are connected with the voltage boosting and reducing module; the control module controls and is connected with the voltage regulating module. According to the invention, the motor is directly driven by using the buck-boost module, so that a motor driving module is omitted; when the voltage of the battery is lower than a set value, the voltage gear is adjusted upwards, and when the voltage of the battery is higher than the set value, the voltage gear is adjusted downwards, so that the voltages at two ends of the motor are kept constant, and the tooth flushing device can ensure that water can be discharged stably at constant voltage under any battery power.

Description

Pressure increasing and reducing control system and method of portable equipment, medium and tooth flushing device

Technical Field

The application relates to the technical field of portable equipment, in particular to a buck-boost control system, a buck-boost control method, a buck-boost control medium and a tooth flushing device of the portable equipment.

Background

With the improvement of living standard of people, more and more people pay attention to the oral health problem, and more people begin to use the tooth flusher to clean the oral cavity. Most of the existing tooth irrigators are powered by batteries, but the water pressure of the water flushed by the battery-powered tooth irrigator in full-power and low-power states can be greatly different due to the discharge curve of the batteries. When the battery is sufficient, the voltage is higher, and the impact force is also large; when the battery power is insufficient, the voltage is lower, and the impact force is smaller. This change in force brings a very poor user experience to the user and also affects the stamping effect.

In the existing tooth flushing device, a TPS63020 buck-boost chip is usually used for outputting fixed voltage, and if various different voltages are to be output, software is often needed to simulate the chip feedback voltage to achieve the purpose of regulating the voltage. However, the software mode has the disadvantages of slow response and poor accuracy. In addition, there are relays that operate to regulate voltage, but the relays are bulky and consume significant power themselves.

Disclosure of Invention

In view of the above drawbacks of the prior art, an object of the present application is to provide a buck-boost chip for solving the problem that the output voltage of the conventional tooth flusher cannot be flexibly adjusted, and the buck-boost chip has the advantages of slow response speed, poor precision and large volume.

To achieve the above and other related objects, a first aspect of the present application provides a buck-boost control system for a portable device, including: a buck-boost module; the voltage regulation module, the control module, the battery module and the driving module are connected with the voltage boosting and reducing module; the control module controls and is connected with the voltage regulating module; when the control module monitors that the current voltage of the battery module is greater than a preset voltage value, the control module controls the voltage regulating module to regulate a voltage gear downwards to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module; when the control module monitors that the current voltage of the battery module is smaller than a preset voltage value, the voltage regulating module is controlled to upwards regulate a voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module.

In some embodiments of the first aspect of the present application, the voltage regulation module comprises a selection switch chip; the switch selection chip is respectively externally connected with resistors with different resistance values; the control module sends a selection instruction to the selection switch chip and then selects the resistor with the corresponding resistance value to be connected with the voltage boosting and reducing module, so that the voltage boosting and reducing module outputs the voltage of the corresponding gear.

In some embodiments of the first aspect of the present application, the plurality of pins of the switch selection chip are respectively connected to resistors with different resistances; after each resistor is connected with the voltage boosting and reducing module, the voltage boosting and reducing module outputs the voltage of the corresponding gear.

In some embodiments of the first aspect of the present application, the switch selection chip is connected to an adjustable resistor; and after the adjustable resistor is connected with the voltage increasing and decreasing module and is controlled to adjust the resistance value, the voltage increasing and decreasing module outputs the voltage of the corresponding gear.

In some embodiments of the first aspect of the present application, the buck-boost module comprises a buck-boost chip; the buck-boost chip comprises an enable pin; the enabling pin is connected with the control module; when the driving module does not work, the control module controls the enable pin to be at a low level so as to close the buck-boost chip.

In some embodiments of the first aspect of the present application, the buck-boost control system further comprises: the key module is connected with the control module; and the key module responds to user operation and sends a corresponding operation instruction to the control module so as to adjust the gear, output control or wake up the portable equipment.

In some embodiments of the first aspect of the present application, the buck-boost control system further comprises: and the display module is connected with the control module and used for displaying the state of the portable equipment.

In some embodiments of the first aspect of the present application, the display module includes a plurality of LED indication units, and displays the states of the portable device through different flashing frequencies and/or different display colors, including at least a charging state, a sleep state, a normal operating state, a power state, and a gear state.

In some embodiments of the first aspect of the present application, the buck-boost control system further comprises: and the voltage stabilizing module is connected with the battery module and the control module and used for converting the fluctuation voltage output by the battery module into stable voltage and then providing the stable voltage to the control module.

In some embodiments of the first aspect of the present application, the buck-boost control system further comprises: and the charging module is connected with the battery module and the control module, is used for controlling charging current and charging voltage, and is used for monitoring the charging state by the control module.

In order to achieve the above and other related objects, a second aspect of the present application provides a buck-boost control method for a portable device, which is applied to a control module in a buck-boost control system of the portable device; the buck-boost control method comprises the following steps: when the current voltage of the battery module is monitored to be larger than a preset voltage value, controlling the voltage regulating module to downwards regulate a voltage gear to the preset voltage value so as to enable the output voltage of the voltage boosting and reducing module connected with the voltage regulating module to be stable at the preset voltage value and then output to the driving module; when the current voltage of the battery module is monitored to be smaller than the preset voltage value, the voltage regulating module is controlled to upwards regulate the voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module.

To achieve the above and other related objects, a third aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements a buck-boost control method of the portable device.

To achieve the above and other related objects, a fourth aspect of the present application provides a control terminal comprising: a processor and a memory; the memory is used for storing a computer program, and the processor is used for executing the computer program stored by the memory so as to enable the terminal to execute the voltage boosting and reducing control method of the portable device.

As described above, the buck-boost control system, method, medium and tooth flushing device of the portable device of the present application have the following beneficial effects: according to the invention, the motor is directly driven by using the buck-boost module, so that a motor driving module is omitted; when the voltage of the battery is lower than a set value, the voltage gear is adjusted upwards, and when the voltage of the battery is higher than the set value, the voltage gear is adjusted downwards, so that the voltages at two ends of the motor are kept constant, and the tooth flushing device can ensure that water can be discharged stably at constant voltage under any battery power.

Drawings

Fig. 1 is a schematic structural diagram of a buck-boost control system of a portable device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a buck-boost module according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a voltage regulation module according to an embodiment of the present application.

Fig. 4 is a schematic circuit diagram of a key module according to an embodiment of the present application.

Fig. 5 is a schematic circuit diagram of a display module according to an embodiment of the present disclosure.

Fig. 6 is a schematic circuit diagram of a voltage regulator module according to an embodiment of the present disclosure.

Fig. 7 is a schematic circuit diagram of a charging module according to an embodiment of the present disclosure.

Fig. 8 is a flowchart illustrating a buck-boost control method of a portable device according to an embodiment of the present disclosure.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It is noted that in the following description, reference is made to the accompanying drawings which illustrate several embodiments of the present application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "below," "lower," "above," "upper," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "retained," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and/or "including" specify the presence of stated features, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, operations, elements, components, items, species, and/or groups thereof. It should be further understood that the terms "or" and/or "as used herein are to be interpreted as being inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions or operations are inherently mutually exclusive in some way.

In order to solve the problems in the prior art, the invention provides a portable equipment control system based on a buck-boost module, wherein a buck-boost module is used for directly driving a motor, and a motor driving module is omitted. If the battery voltage is high but the required gear voltage is lower, starting a step-down mode to step down to the required voltage; if the battery voltage is low but the demanded notch voltage is relatively high, the boost mode is turned on to boost to the demanded voltage.

Fig. 1 is a schematic structural diagram of a buck-boost control system of a portable device according to an embodiment of the present invention. The buck-boost control system of this embodiment includes: the device comprises a voltage boosting and reducing module 101, a voltage regulating module 102, a control module 103, a battery module 104 and a driving module 105; wherein, the control module 103 controls and is connected with the voltage regulating module 102.

In this embodiment, when the control module 103 monitors that the current voltage of the battery module 104 is greater than a preset voltage value, the voltage adjustment module 102 is controlled to adjust the voltage level downward to the preset voltage value, so that the output voltage of the voltage step-up/step-down module 101 is stabilized at the preset voltage value and then is output to the driving module 105. When the control module 103 monitors that the current voltage of the battery module 104 is smaller than a preset voltage value, the voltage regulating module 102 is controlled to regulate the voltage level upwards to the preset voltage value, so that the output voltage of the buck-boost module 101 is stabilized at the preset voltage value and then is output to the driving module 105.

Fig. 2 is a schematic structural diagram of a buck-boost module according to an embodiment of the invention. The buck-boost module comprises a buck-boost chip U4, such as a TPS63030 chip dedicated to portable electronic products or any chip element in the prior art that can realize a buck-boost function.

The buck-boost chip comprises an enable pin, and the enable pin is connected with the control module; when the driving module does not work, the control module controls the enable pin to be at a low level so as to close the buck-boost chip. Particularly, 12 of buck-boost chip U4, No. 13 pin are the enabling foot, and this enabling foot is connected to control module through CR _ OUT line, and when the motor was OUT of work, control module made the boost-buck of buck-boost chip U4 through CR _ OUT line connection control and enabled the foot for the low level to close the buck-boost module, reduce standby current loss, extension standby and live time reach energy-concerving and environment-protective purpose.

In some examples, a voltage adjusting pin (pin 3) of the buck-boost chip U4 is connected to the resistor R4 for collecting feedback current output voltage. The voltage adjusting pin is also connected to the voltage adjusting module through a C _ V line so as to realize voltage output of different gears.

In addition, No. 10 and No. 11 pins of the buck-boost chip U4 are connected with a battery module (BAT +), and capacitors C13, C14 and C15 are connected in parallel at the end of the battery module. No. 4 and 5 pins of the buck-boost chip U4 are connected with a driving module (driving motor) and output voltage Vm to the driving module.

Specifically, the voltage boosting and reducing chip U4 judges according to the current voltage of the battery module and a preset voltage value, and starts a voltage boosting or reducing function. When the current voltage of the battery module is greater than the preset voltage value, starting a voltage reduction function, stabilizing the output voltage at the preset voltage value, and then driving the driving module to ensure that the water pressure of the gear is constant; and when the current voltage of the battery module is smaller than the preset voltage value, starting a boosting function, stabilizing the output voltage at the preset voltage value, and then driving the driving module to ensure that the water pressure of the gear is constant.

The boost-buck module is a high-efficiency boost circuit, and has the advantages of large output current, high efficiency and small volume. Therefore, the heating is very small, and the device is suitable for the large-current and small-volume handheld equipment. It should be noted that the discharge curves of the battery are different under different factors such as material, structure, capacity, manufacturer, model, usage environment, discharge rate, etc. For example, when top current is discharged after the new battery is left to stand for 12 hours after being charged, the voltage is higher than the rated voltage when the capacity is more than 90%, the voltage approaches the rated voltage when the capacity is more than 5%, and the voltage drops sharply when the capacity is less than 5%.

Fig. 3 is a schematic structural diagram of a voltage regulation module according to an embodiment of the present invention. The voltage regulation module comprises a selection switch chip U5; the No. 3 pin of the switch selection chip U5 is connected to the buck-boost module through a connecting line C _ V, the No. 4 pin is connected to the control module through a connecting line CR1, and the No. 8 pin is connected to the control module through a connecting line CR2, and is used for switching between different gear voltages.

Different gears have different requirements on voltage, small gears use small voltage, and large gears use large voltage to drive the motor. The voltage regulation module is connected to the control module and is switched to resistors with different resistance values according to the setting of the control module, the resistors are connected to a voltage stabilization feedback system of the voltage boosting and reducing module to realize different gear voltages, and the gear voltages are not changed along with the attenuation of the battery voltage. Specifically, the switch selection chip U5 is externally connected with resistors with different resistances respectively; the control module sends a selection instruction to the selection switch chip and then selects the resistor with the corresponding resistance value to be connected with the voltage boosting and reducing module, so that the voltage boosting and reducing module outputs the voltage of the corresponding gear.

In some examples, a plurality of pins of the switch selection chip U5 are respectively connected with resistors with different resistance values; after each resistor is connected with the voltage boosting and reducing module, the voltage boosting and reducing module outputs the voltage of the corresponding gear. No. 5 pin connecting resistor R20, No. 7 pin connecting resistor R21 and No. 10 pin connecting resistor R22 of selection switch chip U5 insert resistance R20, R21, R22 in the voltage control of step-up and step-down module, realize the stability of different voltages. The adjustment mode of each gear voltage is as follows:

first gear voltage: the control module sets CR1 high and CR2 high, and C _ V is connected to a resistor R22 through a selection switch chip U5. The resistor R4 connected with the No. 4 pin of the buck-boost chip U4 is connected to the No. 3 pin of the selection switch chip U5 through a connecting wire C _ V and then is connected with the resistor R22; the resistance value of the resistor R22 is set to 250K omega, the output voltage of the buck-boost module is fed back by the resistors R4 and R22 together to be 2.5V, and the voltage at two ends of the motor is 2.5V. The analysis in conjunction with fig. 2 and 3 is as follows: the voltage of the voltage adjustment pin (pin No. 3) of the buck-boost chip U4 is 0.5V, so Vm is 0.5V (R4+ R22)/R22 is 2.5V. Therefore, when battery voltage is lower than 2.5V the boost-buck module automatically starts the boost function, when battery voltage is higher than 2.5V the boost-buck module automatically starts the buck function, and the voltage at two ends of the motor always keeps 2.5V, is not influenced by the change of the battery power, and achieves the purpose of constant voltage control.

Second gear voltage: the control module sets CR1 to be high, CR2 to be low, and C _ V is connected to a resistor R21 through a selection switch chip U5. The resistor R4 connected with the No. 4 pin of the buck-boost chip U4 is connected to the No. 3 pin of the selection switch chip U5 through a connecting wire C _ V and then is connected with the resistor R21; the resistance value of the resistor R21 is set to 200K omega, the output voltage of the buck-boost module is fed back to be 3V by the resistors R4 and R22 together, and the voltage at two ends of the motor is 3V. The analysis in conjunction with fig. 2 and 3 is as follows: the voltage of the voltage adjustment pin (pin No. 3) of the buck-boost chip U4 is 0.5V, so Vm equals 0.5V (R4+ R21)/R21 equals 3V. Therefore, when battery voltage is lower than 3V the boost-buck module automatically starts the boost function, when battery voltage is higher than 3V the boost-buck module automatically starts the buck function, and the voltage at two ends of the motor always keeps 3V, is not influenced by the change of the battery power, and achieves the purpose of constant voltage control.

Voltage in third gear: the control module sets CR1 to be low level, CR2 to be low level, and C _ V is connected to a resistor R20 through a selection switch chip U5; the resistance value of the resistor R20 is set to 150K omega, the output voltage of the buck-boost module is fed back by the resistors R4 and R20 together to be 3.83V, and the voltage at two ends of the motor is 3.83V. The analysis in conjunction with fig. 2 and 3 is as follows: the voltage of the voltage adjustment pin (pin No. 3) of the buck-boost chip U4 is 0.5V, so Vm is 0.5V (R4+ R20)/R20 is 3.83V. Therefore, when the battery voltage is lower than 3.83V, the voltage boosting and reducing module automatically starts the voltage boosting function, when the battery voltage is higher than 3.83V, the voltage boosting and reducing module automatically starts the voltage reducing function, the voltage at two ends of the motor is always kept to be 3.83V, the influence of the change of the battery power is avoided, and the purpose of constant voltage control is achieved.

It should be noted that, taking the above contents as an example, rather than the above embodiments as a limitation, the present invention does not limit the number of the selection switch chips, nor the number of the resistors connected to each selection switch chip, that is, the buck-boost module may extend the adjustment range by additionally increasing the number of the selection switch chips and/or the number of the external resistors of each selection switch chip.

In some examples, the switch selection chip U5 is connected to an adjustable resistor (not shown); and after the adjustable resistor is connected with the voltage increasing and decreasing module and is controlled to adjust the resistance value, the voltage increasing and decreasing module outputs the voltage of the corresponding gear. For example, if the resistance value of the adjustable resistor is adjusted to 250K Ω, the output voltage of the buck-boost module can output 2.5V; the resistance value of the adjustable resistor is adjusted to 200K Ω, so that the output voltage of the buck-boost module can output 3V, the principle is similar to that described above, and the details are omitted here.

In some examples, the buck-boost control system of the portable device further includes a key module. The key module 106 is connected with the control module 103; the key module 106 responds to user operation, and sends a corresponding operation instruction to the control module so as to perform gear adjustment, output control or awakening operation on the portable device. For easy understanding, referring to fig. 4, which is a schematic circuit diagram of a KEY module according to an embodiment of the present invention, S1 and S2 in the figure are KEYs connected to a control module through KEY1 and KEY2 lines.

In some examples, the buck-boost control system further comprises a display module 107 connected to the control module 103 for displaying a status of the portable device. For example, the current working state of the portable device, such as a charging state, a sleep state, a normal working state, an electric quantity state, a gear adjustment state, etc., can be displayed through different flashing frequencies, different display colors, or different combinations of flashing rates and display colors; the electric quantity state mainly refers to the state that the current electric quantity of the equipment is sufficient, medium or insufficient. For easy understanding, a schematic structural diagram of a display module in an embodiment of the present invention is shown in conjunction with fig. 5, where the display module includes 3 sets of LED indicating units, each set of LED indicating unit is composed of a resistor and an LED lamp, R1, R2, R3 are resistors, D1, D2, D3 are LED indicating lamps, and the LED indicating units are connected to the control module through an LED1, an LED2, and an LED3 by wires.

In some examples, the buck-boost control system further includes a voltage regulation module 108; the voltage stabilizing module 108 is connected to the battery module and the control module, and is configured to convert the fluctuating voltage output by the battery module into a stable voltage and provide the stable voltage to the control module. When a portable device (such as a tooth flushing device) works, a very large current is usually generated, and the current is output in a pulse mode, so that the voltage of the battery module is always in a fluctuation state, and the ripple waves of the battery module can cause instability of the control module if being directly output to the control module. The voltage stabilizing module in the embodiment is used for converting the fluctuating voltage into the stable voltage, so that the stable working voltage is provided for the control unit. For easy understanding, a schematic structural diagram of a voltage regulator module according to an embodiment of the present invention is shown in fig. 6, where the voltage regulator module includes: the voltage stabilizing chip U1 (such as LM7805 chip, LM1117 chip, LM2576 chip, etc.) is used for providing a stable power supply for the control module, and C1, C4 and C5 are capacitors, and D8 is a diode.

In some examples, the buck-boost control system further includes a charging module 109 connected to the battery module and the control module, for controlling the charging current and the charging voltage, so as to prevent the charging current from being too large and the charging voltage from being too high. In addition, the charging module 109 is also used for the control module to monitor the charging state.

The circuit structure of the charging module is shown in fig. 7, and includes a charging management chip U3, a pin 2 of which is connected to a resistor R15 for setting the magnitude of the charging current; the No. 8 pin is connected to the control module through voltage dividing resistors R17 and R18 and a connecting line Char _ full, so that whether the battery module is fully charged or not is monitored; the No. 4 pin is led out of the resistors R14 and R16, is connected to the control module through a Charge line and is used for quickly detecting whether the charging is performed; no. 5 pin outgoing resistors R5 and R6 are connected to the control module through AVCD lines and used for monitoring the battery power in real time. The diode D6 is a protection diode for eliminating external electrostatic interference and limiting the external input power supply to be not higher than 5.5V. Diode D7 is the diode of switching power supply, and when charging, the switching is the little the control unit module power supply to external power source, promotes the charging speed, can prevent again that the battery from fully charging when, and the external power supply of battery, the electric quantity reduces.

Fig. 8 is a schematic flow chart illustrating a buck-boost control method of a portable device according to an embodiment of the present invention. The buck-boost control method of the embodiment is applied to a control module in the buck-boost control system of the portable device; the buck-boost control method comprises steps S81 and S82.

Step S81: when the current voltage of the battery module is monitored to be larger than the preset voltage value, the voltage regulating module is controlled to downwards regulate the voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module connected with the voltage regulating module is stabilized at the preset voltage value and then is output to the driving module.

Step S82: when the current voltage of the battery module is monitored to be smaller than the preset voltage value, the voltage regulating module is controlled to upwards regulate the voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module.

Since the control method of the present invention is similar to the above embodiment of the buck-boost control system of the portable device, further description is omitted.

The invention also provides a tooth flushing device which comprises the control module in the lifting and pressing control system of the portable equipment. Since the tooth irrigator of the present invention is similar to the above embodiment of the buck-boost control system of the portable device, further description is omitted.

The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method of the portable device.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

In the embodiments provided herein, the computer-readable and writable storage medium may include read-only memory, random-access memory, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, a USB flash drive, a removable hard disk, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the instructions are transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. It should be understood, however, that computer-readable-writable storage media and data storage media do not include connections, carrier waves, signals, or other transitory media, but are intended to be non-transitory, tangible storage media. Disk and disc, as used in this application, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.

In summary, the present application provides a buck-boost control system, method, medium and tooth flusher for a portable device, the buck-boost module directly drives a motor, and a motor driving module is omitted; when the voltage of the battery is lower than a set value, the voltage gear is adjusted upwards, and when the voltage of the battery is higher than the set value, the voltage gear is adjusted downwards, so that the voltages at two ends of the motor are kept constant, and the tooth flushing device can ensure that water can be discharged stably at constant voltage under any battery power. Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. A buck-boost control system for a portable device, comprising:

a buck-boost module;

the voltage regulation module, the control module, the battery module and the driving module are connected with the voltage boosting and reducing module; the control module controls and is connected with the voltage regulating module;

when the control module monitors that the current voltage of the battery module is greater than a preset voltage value, the control module controls the voltage regulating module to regulate a voltage gear downwards to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module;

when the control module monitors that the current voltage of the battery module is smaller than a preset voltage value, the voltage regulating module is controlled to upwards regulate a voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module.

2. The buck-boost control system of claim 1, wherein the voltage regulation module includes a selection switch chip; the switch selection chip is respectively externally connected with resistors with different resistance values; the control module sends a selection instruction to the selection switch chip and then selects the resistor with the corresponding resistance value to be connected with the voltage boosting and reducing module, so that the voltage boosting and reducing module outputs the voltage of the corresponding gear.

3. The buck-boost control system according to claim 2, wherein the plurality of pins of the switch selection chip are respectively connected to resistors with different resistances; after each resistor is connected with the voltage boosting and reducing module, the voltage boosting and reducing module outputs the voltage of the corresponding gear.

4. The buck-boost control system according to claim 2, wherein the switch selection chip is connected to an adjustable resistor; and after the adjustable resistor is connected with the voltage increasing and decreasing module and is controlled to adjust the resistance value, the voltage increasing and decreasing module outputs the voltage of the corresponding gear.

5. The buck-boost control system of the portable device of claim 1, wherein the buck-boost module includes a buck-boost chip; the buck-boost chip comprises an enable pin; the enabling pin is connected with the control module; when the driving module does not work, the control module controls the enable pin to be at a low level so as to close the buck-boost chip.

6. The buck-boost control system of the portable device of claim 1, further comprising: the key module is connected with the control module; and the key module responds to user operation and sends a corresponding operation instruction to the control module so as to adjust the gear, output control or wake up the portable equipment.

7. The buck-boost control system of the portable device of claim 1, further comprising: and the display module is connected with the control module and used for displaying the state of the portable equipment.

8. The system of claim 7, wherein the display module comprises a plurality of LED indication units, and displays the status of the portable device through different flashing frequencies and/or different display colors, at least comprising a charging status, a sleep status, a normal operating status, a power status, and a gear status.

9. The buck-boost control system of the portable device of claim 1, further comprising: and the voltage stabilizing module is connected with the battery module and the control module and used for converting the fluctuation voltage output by the battery module into stable voltage and then providing the stable voltage to the control module.

10. The buck-boost control system of the portable device of claim 1, further comprising: and the charging module is connected with the battery module and the control module, is used for controlling charging current and charging voltage, and is used for monitoring the charging state by the control module.

11. A buck-boost control method for a portable device, wherein the method is applied to a control module in the buck-boost control system of the portable device according to claim 1; the buck-boost control method comprises the following steps:

when the current voltage of the battery module is monitored to be larger than a preset voltage value, controlling the voltage regulating module to downwards regulate a voltage gear to the preset voltage value so as to enable the output voltage of the voltage boosting and reducing module connected with the voltage regulating module to be stable at the preset voltage value and then output to the driving module;

when the current voltage of the battery module is monitored to be smaller than the preset voltage value, the voltage regulating module is controlled to upwards regulate the voltage gear to the preset voltage value, so that the output voltage of the voltage boosting and reducing module is stabilized at the preset voltage value and then is output to the driving module.

12. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the buck-boost control method of the portable device of claim 11.

13. A dental irrigator comprising the buck-boost control system of any one of claims 1 to 10.