Charging detection system of electric toothbrush and electric toothbrush

Abstract

The embodiment of the utility model discloses a charging detection system of an electric toothbrush and the electric toothbrush, and the charging detection system of the electric toothbrush comprises a charging circuit, a charging management chip MCU, a judgment circuit and a battery, wherein the charging circuit, the judgment circuit and the battery are electrically connected with the charging management chip MCU respectively; the charging circuit comprises a charging detection module, the charging detection module is used for detecting a current signal in the charging circuit, and the charging detection module is in communication connection with the charging management chip MCU; when the charging circuit is powered on, current in the charging circuit charges the battery through the charging management chip MCU. The charging detection module detects a current signal in the charging circuit and sends the current signal to the charging management chip MCU, the charging management chip MCU generates a judgment signal according to the current signal and sends the judgment signal to the judgment circuit, and the judgment circuit judges the power storage state of the battery according to the judgment signal. According to the utility model, the technical problem that a user cannot conveniently investigate the charging condition of the battery is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric toothbrushes, in particular to a charging detection system of an electric toothbrush and the electric toothbrush. BACKGROUND

[0002] With the increasing quality of life, people pay more and more attention to oral hygiene, and the use of electric toothbrushes is also more and more popular. Generally speaking, the electric toothbrush is driven by the motor to rotate and vibrate the brush head, thereby achieving the purpose of brushing teeth.

[0003] The motor needs to be powered to work normally to drive the brush head to work normally, so the motor needs to be powered when using the electric toothbrush. Under the premise of convenience and safety, a battery that can store electricity is generally arranged in the handle of the electric toothbrush to power the motor. When the battery runs out, the battery needs to be charged. Without the help of other tools, the user cannot check whether the battery is fully charged. Therefore, if the battery is fully charged or about to be fully charged, and the battery continues to be charged by the rated current, the battery will be negatively affected, reducing the battery's endurance, and also causing the battery to appear virtual electricity.

[0004] The above content is only used to assist in understanding the technical solutions of the utility model, and does not mean that the above content is prior art. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problem that the user cannot easily check the charging condition of the battery, the utility model provides a charging detection system of an electric toothbrush, which solves the technical problem that the user cannot easily check the charging condition of the battery.

[0006] To achieve the above purpose, the utility model provides a charging detection system of an electric toothbrush, which comprises a charging circuit, a charging management chip MCU, a judgment circuit and a battery. Wherein,

[0007] The charging circuit, the judgment circuit and the battery are respectively electrically connected to the charging management chip MCU;

[0008] The charging circuit comprises a charging detection module, the charging detection module is used for detecting the current signal in the charging circuit, and the charging detection module is in communication connection with the charging management chip MCU;

[0009] When the charging circuit is powered on, the current in the charging circuit charges the battery through the charging management chip MCU; the charging detection module detects the current signal in the charging circuit and sends the current signal to the charging management chip MCU, the charging management chip MCU generates a judgment signal according to the current signal and sends it to the judgment circuit, and the judgment circuit judges the storage state of the battery according to the judgment signal.

[0010] In an embodiment, the judging circuit comprises a first resistor and a second resistor connected in series in sequence, and the other end of the first resistor is electrically connected to the charging management chip MCU, and the other end of the second resistor is grounded.

[0011] When the judging circuit receives the judging signal, the type of the judging signal is judged according to the first resistor and the second resistor, when the judging signal is a low-frequency signal, it is judged that the battery is low, and the charging circuit continues to charge the battery; when the judging signal is a high-frequency signal, it is judged that the battery is full.

[0012] In an embodiment, the reminding circuit further comprises at least one reminder electrically connected to the charging management chip MCU;

[0013] The judging circuit generates a low-frequency feedback signal according to the low-frequency signal, and generates a high-frequency feedback signal according to the high-frequency signal;

[0014] The judging circuit feeds back the low-frequency feedback signal or the high-frequency feedback signal to the charging management chip MCU, and the charging management chip MCU controls the reminding circuit to be powered off or powered on according to the type of the received feedback signal.

[0015] In an embodiment, the reminder is a indicator light, a buzzer or a display.

[0016] When the type of the feedback signal received by the charging management chip MCU is a low-frequency feedback signal, the charging management chip MCU controls the reminding circuit to be powered off, and the reminder stops working.

[0017] When the type of the feedback signal received by the charging management chip MCU is a high-frequency feedback signal, the charging management chip MCU controls the reminding circuit to be powered on, and the reminder normally works.

[0018] In an embodiment, when the charging management chip MCU controls the reminding circuit to be powered on, the charging circuit supplies power to the reminding circuit.

[0019] In an embodiment, when the current value of the current signal detected by the charging detection module is less than 10% of the rated current of the charging circuit, the judging signal generated by the charging management chip MCU is a high-frequency signal.

[0020] In an embodiment, the resistance value of the first resistor is less than the resistance value of the second resistor.

[0021] In an embodiment, the charging detection module is in communication connection with the charging management chip MCU through Bluetooth.

[0022] The utility model also provides an electric toothbrush, including brush handle, brush head and at least one charging detection system as described above, wherein,

[0023] The brush head is detachably arranged at one end of the brush handle.

[0024] The charging detection system is arranged in the brush handle.

[0025] In an embodiment, the brush handle is provided with a charging port, and the charging circuit of the charging detection system is electrically connected with the charging port.

[0026] The charging detection system of the electric toothbrush detects the current signal in the charging circuit through the charging detection module to determine the storage state of the battery, and when the battery storage is completed or is about to be completed, the current in the charging circuit will be less than the rated current, and the storage state of the battery is detected through the charging circuit, compared with directly detecting the storage state of the battery through the battery, since the battery needs to supply power to the charging detection module, the battery will have additional power consumption, that is, the battery charges and consumes power at the same time, and the storage state of the battery is detected through the charging circuit, and thus the charging efficiency is higher; at the same time, since the charging of the battery may appear a false voltage condition, when the storage state of the battery is directly detected, the detection result is not accurate, and when the storage state of the battery is detected through the charging circuit, the detection is directly performed through the current in the charging circuit, and when the battery is in a false voltage condition, the current in the charging circuit is not affected by the false voltage of the battery, and thus the detection result is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The connection schematic diagram of the charging detection system of the electric toothbrush is shown;

[0029] Figure 2 For Figure 1 The connection schematic diagram of the charging detection system of the electric toothbrush is shown;

[0030] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but the combination of the technical solutions should be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of the technical solutions is contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope of the present application.

[0032] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" appearing throughout the text means that three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0034] The utility model provides a kind of charging detection system of electric toothbrush, including charging circuit, charging management chip MCU, judging circuit, battery;Wherein, charging circuit, judging circuit and battery are electrically connected charging management chip MCU respectively;Including charging detection module in charging circuit, charging detection module is used to detect the current signal in charging circuit, and charging detection module is connected with charging management chip MCU communication;When charging circuit is powered, the current in charging circuit is charged for battery by charging management chip MCU;Charging detection module detects the current signal in charging circuit, and current signal is sent to charging management chip MCU, and charging management chip MCU generates judging signal according to current signal and sends to judging circuit, and judging circuit judges the storage state of battery according to judging signal.

[0035] In the embodiments of the present application, please refer to Figure 1 The charging detection system of the electric toothbrush includes: a charging circuit for supplying power when charging the battery;A charging management chip MCU for power distribution, calculation and other functions;A judging circuit for judging the storage state of the battery;A battery for storing electricity.

[0036] In the above charging detection system, the charging circuit, the judgment circuit and the battery are electrically connected with the charging management chip MCU. When charging the battery, the charging circuit is powered, and the current charges the battery through the charging circuit and the charging management chip MCU.

[0037] The charging detection module is included in the charging circuit, which is used to detect the current signal in the charging circuit, that is, when charging the battery, there is current in the charging circuit, and the charging detection module will detect the current and / or current value in the charging circuit, and the charging detection module is in communication connection with the charging management chip MCU, and the detected current signal is sent to the charging management chip MCU.

[0038] It should be noted that the specific working principle of the above embodiment is that when the battery of the electric toothbrush needs to be charged, the external power source is connected with the charging circuit, the charging circuit will be powered and the current will flow, at the same time, the charging detection module will detect the current signal in the charging circuit and send it to the charging management chip MCU, and the current will charge the battery through the charging management chip MCU. When the battery charging circuit charges the battery, when the battery charging circuit charges the battery, when the battery is in the state of insufficient power storage, the charging circuit will charge the battery with rated current quickly, at this time, because the current in the charging circuit is the rated current, the current signal detected by the charging detection module is the signal of the rated current, and the charging detection module sends the current signal of the rated current to the charging management chip MCU.

[0039] When the battery is about to be full or full, at this time, in order to enable the battery to store more power, the charging circuit will reduce the charging current to reduce the charging speed, so that the battery can store more power, at this time, the current signal detected by the charging detection module will be obviously smaller than the signal of the rated current, and the charging detection module will send the current signal smaller than the rated current to the charging management chip MCU. When the charging management chip MCU receives the current signal of the rated current and the current signal smaller than the rated current respectively, different judgment signals will be generated according to the received current signal, and different judgment signals will be sent to the judgment circuit respectively, and the type of each judgment signal is judged through the judgment circuit, that is, high frequency or low frequency. When the judgment signal is a low frequency signal, that is, the current in the charging circuit is large or the rated current, so it is judged that the battery charging is not completed at this time. When the judgment signal is a high frequency signal, that is, the current in the charging circuit is smaller than the rated current or the current is small, so it is judged that the battery is about to be full or has been full.

[0040] In the embodiment, the charging state of the battery is determined by detecting the current signal in the charging circuit through the charging detection module. When the battery is fully charged or about to be fully charged, the current in the charging circuit will be less than the rated current. By detecting the charging state of the battery through the charging circuit, compared with directly detecting the charging state of the battery, the battery needs to supply power to the charging detection module, so the battery will have additional power consumption, that is, charging and power consumption at the same time. By detecting the charging state of the battery through the charging circuit, the charging efficiency is higher. At the same time, since the charging of the battery may appear virtual electricity, when directly detecting the charging state of the battery, the detection result is not accurate. By detecting the charging state of the battery through the charging circuit, the current in the charging circuit is directly detected. When the battery is in virtual electricity, the current in the charging circuit is not affected by the virtual electricity of the battery, so the detection result is more accurate.

[0041] Further, the determination circuit includes a first resistor and a second resistor connected in series in order. The other end of the first resistor is electrically connected to the charging management chip MCU, and the other end of the second resistor is grounded. When the determination circuit receives the determination signal, the type of the determination signal is determined according to the first resistor and the second resistor. When the determination signal is a low-frequency signal, it is determined that the battery is under power shortage, and the charging of the battery is continued through the charging circuit. When the determination signal is a high-frequency signal, it is determined that the battery is fully charged.

[0042] In the embodiment, the determination circuit is described in detail. The determination circuit includes a first resistor and a second resistor connected in series in order. The other end of the first resistor is electrically connected to the charging management chip MCU for receiving the determination signal generated by the charging management chip MCU, and the other end of the second resistor is grounded. After the determination circuit receives the determination signal, the type of the determination signal is determined according to the first resistor and the second resistor, that is, the determination signal is determined to be a low-frequency signal or a high-frequency signal through the first resistor and the second circuit. When it is determined through the determination circuit that the determination signal is a low-frequency signal, it is determined that the battery is under power shortage, that is, the charging of the battery is not completed. For details, please refer to the above description. Similarly, when it is determined through the determination circuit that the determination signal is a high-frequency signal, it is determined that the battery is fully charged, that is, the battery is about to be fully charged or has been fully charged.

[0043] Further, the reminder circuit is also included. One end of the reminder circuit is electrically connected to the charging management chip MCU, and the other end is electrically connected to at least one reminder. The determination circuit generates a low-frequency feedback signal according to the low-frequency signal, and generates a high-frequency feedback signal according to the high-frequency signal. The determination circuit feeds back the low-frequency feedback signal or the high-frequency feedback signal to the charging management chip MCU respectively. The charging management chip MCU controls the power supply or power supply of the reminder circuit according to the type of the received feedback signal.

[0044] In the embodiment, please refer toFigure 2 As shown, the charging detection system further comprises a reminding circuit, a first end of the reminding circuit is electrically connected with the charging management chip MCU, and the charging management chip MCU is configured to supply power to the reminding circuit; and at least one reminder is electrically connected to another end of the reminding circuit. It should be noted that the reminder includes but is not limited to an indicator light, a buzzer, a display, etc., and in this application, the reminder is mainly described and implemented as an indicator light. When the judgment circuit determines that the judgment signal is a low-frequency signal, a low-frequency feedback signal is generated; when the judgment circuit determines that the judgment signal is a high-frequency signal, a high-frequency feedback signal is generated; and when the judgment circuit generates the low-frequency feedback signal and the high-frequency feedback signal, the judgment circuit feeds back the generated low-frequency feedback signal and the high-frequency feedback signal to the charging management chip MCU, respectively. When the feedback signal received by the charging management chip MCU is a high-frequency feedback signal, the charging management chip MCU controls the reminding circuit to be powered on, so that the indicator light is turned on or flashes, or flashes according to the storage condition of the battery, that is, the faster or slower the indicator light flashes when the battery is fully charged, and the indicator light is always on when the battery is fully charged. When the feedback signal received by the charging management chip MCU is a low-frequency signal, the charging management chip MCU controls the reminding circuit to be powered off, and the indicator light stops turning on or flashing.

[0045] In this embodiment, by setting the reminding circuit and the reminder, compared with not setting the reminding circuit and the reminder, when the battery is about to be fully charged or has been fully charged, the reminder works by supplying power to the reminding circuit, and the charging condition of the electric toothbrush can be directly observed.

[0046] Further, when the charging management chip MCU controls the reminding circuit to be powered on, the charging circuit supplies power to the reminding circuit.

[0047] In this embodiment, when the charging management chip MCU receives the high-frequency feedback signal and controls the reminding circuit to be powered on, the charging circuit supplies power to the reminding circuit, that is, the battery of the electric toothbrush does not supply power to the reminding circuit. In this embodiment, when the charging circuit supplies power to the reminding circuit, compared with supplying power to the reminding circuit by the battery, the reminding circuit will consume power, so that the battery will consume power when supplying power to the reminding circuit, and at the same time, the battery is being charged by the charging circuit, so that the battery is in a state of simultaneous charging and power consumption, which prolongs the time for the battery to be fully charged, and when the battery is simultaneously charged and consumes power, the battery is continuously in a high-load state, which accelerates the aging of the battery and shortens the service life of the battery. When the charging circuit supplies power to the reminding circuit, the power consumption of the battery is reduced, and the charging efficiency and the service life of the battery are improved.

[0048] Further, when the current value of the current signal detected by the charging detection module is less than 10% of the rated current of the charging circuit, the charging management chip MCU generates a high-frequency signal as the judgment signal.

[0049] In the embodiment, the charging detection module is configured, when the current value of the current signal in the detected charging circuit is less than a set value, for example, the set value is 10% of the rated current of the charging circuit, when the current value in the charging circuit is less than 10% of the rated circuit, the judgment signal generated by the charging management chip MCU is a high-frequency signal, that is, the judgment circuit feeds back a high-frequency feedback signal to the charging management chip CMU, and the alarm is powered on to work normally. It should be noted that the set value here is only for description and understanding, and has no limiting effect, and the actual set value can be set according to the application scene and actual user demand.

[0050] Further, the resistance value of the first resistor is less than the resistance value of the second resistor.

[0051] In the embodiment, the judgment circuit is described again, the resistance value of the judgment circuit is less than the resistance value of the second resistor, specifically, the resistance value of the first resistor is 9k1%Ω-11k1%Ω, and the resistance value of the second resistor is 14k1%Ω-16k1%Ω.

[0052] Further, the charging detection module is in communication connection with the charging management chip MCU through Bluetooth.

[0053] In the embodiment, the communication connection between the charging detection module and the charging management chip MCU is described, the charging detection module includes but is not limited to being in communication connection with the charging management chip MCU through Bluetooth communication, so as to send the current signal detected by the charging detection module to the charging management chip MCU, and the charging management chip MCU generates a judgment signal through the received current signal.

[0054] The utility model also proposes a kind of electric toothbrush, the electric toothbrush includes brush handle, brush head and the charging detection system provided by the above embodiment, the charging detection system refers to the above embodiment, since the electric toothbrush of the present application adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here. Among them, the brush head is detachably arranged at one end of the brush handle, and can rotate and / or vibrate and / or sweep at one end of the brush handle, and the charging detection system is arranged in the brush handle. Charging port is provided on the brush handle, and the charging circuit of the charging detection system is electrically connected with the charging port to supply power to the charging circuit through the charging port.

[0055] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art will understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A charging detection system for an electric toothbrush, characterized in that: It includes charging circuit, charging management chip MCU, judgment circuit, and battery; among them, The charging circuit, the judgment circuit and the battery are electrically connected to the charging management chip MCU respectively; The charging circuit includes a charging detection module, which is used to detect the current signal in the charging circuit, and the charging detection module is communicatively connected to the charging management chip MCU; When the charging circuit is powered on, the current in the charging circuit charges the battery through the charging management chip MCU; the charging detection module detects the current signal in the charging circuit and sends the current signal to the charging management chip MCU, the charging management chip MCU generates a judgment signal based on the current signal and sends it to the judgment circuit, and the judgment circuit judges the battery storage status based on the judgment signal.

2. The charging detection system for an electric toothbrush according to claim 1, wherein: The judgment circuit includes a first resistor and a second resistor connected in series end to end, the other end of the first resistor is electrically connected to the charging management chip MCU, and the other end of the second resistor is grounded; After the judgment circuit receives the judgment signal, it determines the type of the judgment signal based on the first resistor and the second resistor. When the judgment signal is a low-frequency signal, it determines that the battery is undercharged, and continues to charge the battery through the charging circuit; when the judgment signal is a high-frequency signal, it determines that the battery is fully charged.

3. The charging detection system for an electric toothbrush according to claim 2, wherein: It also includes a reminder circuit, one end of which is electrically connected to the charging management chip MCU, and the other end of which is electrically connected to at least one reminder; The judgment circuit generates a low-frequency feedback signal according to the low-frequency signal, and the judgment circuit generates a high-frequency feedback signal according to the high-frequency signal; The judgment circuit feeds back the low-frequency feedback signal or the high-frequency feedback signal to the charging management chip MCU respectively, and the charging management chip MCU controls the reminder circuit to be powered off or powered on according to the type of the received feedback signal.

4. The charging detection system for an electric toothbrush according to claim 3, wherein: The reminder is an indicator light, a buzzer, or a display; When the type of the feedback signal received by the charging management chip MCU is a low-frequency feedback signal, the charging management chip MCU controls the reminder circuit to be powered off, and the reminder stops working; When the type of the feedback signal received by the charging management chip MCU is a high-frequency feedback signal, the charging management chip MCU controls the reminder circuit to be powered on, and the reminder operates normally.

5. The charging detection system for an electric toothbrush according to claim 4, characterized in that: When the charging management chip MCU controls the reminder circuit to be powered on, power is supplied to the reminder circuit through the charging circuit.

6. The charging detection system for an electric toothbrush according to claim 3, wherein: When the current value of the current signal detected by the charging detection module is less than 10 percent of the rated current of the charging circuit, the judgment signal generated by the charging management chip MCU is a high-frequency signal.

7. The charging detection system for an electric toothbrush according to claim 2, wherein: The resistance value of the first resistor is smaller than the resistance value of the second resistor.

8. The charging detection system for an electric toothbrush according to claim 1, wherein: The charging detection module is connected to the charging management chip MCU via Bluetooth communication.

9. An electric toothbrush, characterized in that: comprising a brush handle, a brush head and at least one charging detection system according to any one of claims 1 to 8; wherein, The brush head is detachably mounted on one end of the brush handle; The charging detection system is arranged in the brush handle.

10. The electric toothbrush according to claim 9, characterized in that The brush handle is provided with a charging port, and the charging circuit of the charging detection system is electrically connected to the charging port.

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