Cosmetic instrument charging circuit and cosmetic instrument

Abstract

The utility model discloses a kind of beauty instrument charging circuit and beauty instrument, including control chip, current regulating unit and voltage regulating unit, the control chip includes current setting port, voltage setting port, with the power input port of external power supply electricity connection, and with the voltage output port of the battery electricity connection of beauty instrument, one end of the current setting port is electrically connected with the power input port, another end of the current setting port is electrically connected with the current regulating unit;One end of the voltage setting port is electrically connected with the power input port, another end of the voltage setting port is electrically connected with the voltage regulating unit. Implement the utility model, different charging current and charging voltage can be adjusted according to different battery voltage, can be applicable to different specifications of adapter, without dedicated adapter to charge beauty instrument, improve compatibility, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of beauty equipment technology, and in particular to a charging circuit for a beauty device and a beauty device. Background Technology

[0002] Beauty devices, especially home-use devices, are increasingly popular due to their ability to improve skin condition. While most existing beauty devices have charging capabilities, they typically require specific adapters for charging. This incompatibility between the device's battery voltage and the adapter prevents charging and increases costs. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing beauty devices that require a specific adapter for charging, and to provide a beauty device charging circuit and a beauty device.

[0004] The present invention provides a charging circuit for a beauty device, comprising a control chip, a current regulation unit, and a voltage regulation unit. The control chip includes a current setting port, a voltage setting port, a power input port electrically connected to an external power source, and a voltage output port electrically connected to the battery of the beauty device.

[0005] One end of the current setting port is electrically connected to the power input port, and the other end of the current setting port is electrically connected to the current regulating unit;

[0006] One end of the voltage setting port is electrically connected to the power input port, and the other end of the voltage setting port is electrically connected to the voltage regulation unit.

[0007] In one of the alternative technical solutions, the current regulating unit includes a current-adjustable resistor with adjustable resistance. One end of the current-adjustable resistor is electrically connected to the current setting port, and the other end of the current-adjustable resistor is grounded.

[0008] In one of the alternative technical solutions, the voltage regulation unit includes a voltage-adjustable resistor with adjustable resistance. One end of the voltage-adjustable resistor is electrically connected to the voltage setting port, and the other end of the voltage-adjustable resistor is grounded.

[0009] In one of the alternative technical solutions, the current regulating unit further includes a first filter capacitor, and the voltage regulating unit further includes a second filter capacitor. The first filter capacitor is connected in parallel with the current adjustable resistor, and the second filter capacitor is connected in parallel with the voltage adjustable resistor.

[0010] In one of the alternative technical solutions, a boost charging unit is also included. The control chip also includes a switch port. One end of the boost charging unit is electrically connected to the external power supply, and the other end of the boost charging unit is electrically connected to the switch port.

[0011] In one of the alternative technical solutions, the boost charging unit includes an inductor, one end of which is electrically connected to the external power supply, and the other end of which is electrically connected to the switch port.

[0012] In one of the alternative technical solutions, a charging temperature detection unit is also included, and the control chip further includes a charging temperature detection port, wherein the charging temperature detection unit is electrically connected to the charging temperature detection port.

[0013] In one of the alternative technical solutions, the charging temperature detection unit includes a thermistor, one end of which is electrically connected to the charging temperature detection port, and the other end of which is grounded.

[0014] In one alternative technical solution, a light-emitting diode (LED) for indicating the charging status is also included, the LED being connected in parallel with the current-adjustable resistor.

[0015] The present invention also provides a beauty device, including the beauty device charging circuit described above.

[0016] The above technical solution has the following advantages: By setting a current setting port, a voltage setting port, and a power input port through the control chip, and with the current adjustment unit electrically connected to the current setting port and the voltage adjustment unit electrically connected to the voltage setting port, the control chip controls the current adjustment unit and / or the voltage adjustment unit to adjust the charging current and / or charging voltage according to the battery voltage of the beauty device, thereby charging the battery of the beauty device. This achieves the adjustment of different charging current and charging voltage according to different battery voltages, making it suitable for adapters of different specifications. It eliminates the need for a dedicated adapter to charge the beauty device, improving compatibility and reducing costs. Attached Figure Description

[0017] The disclosure of this utility model will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a beauty device charging circuit provided in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the circuit structure of a beauty device charging circuit provided in an embodiment of the present invention. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0023] like Figure 1 and Figure 2 As shown, a beauty device charging circuit provided in one embodiment of this utility model includes a control chip 11, a current adjustment unit 12, and a voltage adjustment unit 13. The control chip 11 includes a current setting port 111, a voltage setting port 112, a power input port 113 electrically connected to an external power source, and a voltage output port 114 electrically connected to the battery of the beauty device.

[0024] One end of the current setting port 111 is electrically connected to the power input port 113, and the other end of the current setting port 111 is electrically connected to the current regulating unit 12.

[0025] One end of the voltage setting port 112 is electrically connected to the power input port 113, and the other end of the voltage setting port 112 is electrically connected to the voltage regulation unit 13.

[0026] The beauty device charging circuit provided in this embodiment is used to charge a home beauty device with constant current and constant voltage, and mainly includes a control chip 11, a current adjustment unit 12 and a voltage adjustment unit 13.

[0027] The control chip 11 has a current setting port 111, a voltage setting port 112, and a power input port 113. The power input port 113 is used to connect an external power source. The current adjustment unit 12 is electrically connected to the current setting port 111. The control chip 11 controls the current adjustment unit 12 to adjust the charging current according to the battery voltage of the beauty device's battery. For example, when the battery voltage is less than 6V, the control chip 11 controls the current adjustment unit 12 to charge the battery with a fixed current of 100mA; when the battery voltage is greater than 6V, the control chip 11 controls the current adjustment unit 12 to charge the battery with a constant current. The voltage regulation unit 13 is electrically connected to the voltage setting port 112. The control chip 11 controls the voltage regulation unit 13 to adjust the charging voltage according to the battery voltage. For example, when the battery voltage is within the set charging voltage range, the control chip 11 controls the voltage regulation unit 13 to charge the battery in a constant voltage charging mode. After entering the constant voltage charging mode, if the charging current is less than 100mA, charging stops. The control chip 11 detects whether the battery voltage is higher than the stop charging voltage. If the battery voltage is higher than the stop charging voltage, charging stops; otherwise, charging continues. After the battery is fully charged and charging stops, and the input remains, when the battery voltage is lower than the set charging voltage, the control chip 11 controls the voltage regulation unit 13 to start charging again. This achieves the adjustment of different charging currents and charging voltages according to different battery voltages, making it suitable for adapters of different specifications. It eliminates the need for a dedicated adapter to charge the beauty device, improving compatibility and reducing costs.

[0028] Optionally, the control chip 11 is a controller chip.

[0029] In this embodiment, a control chip is used to set a current setting port, a voltage setting port, and a power input port. The current adjustment unit is electrically connected to the current setting port, and the voltage adjustment unit is electrically connected to the voltage setting port. The control chip controls the current adjustment unit and / or the voltage adjustment unit to adjust the charging current and / or charging voltage according to the battery voltage of the beauty device, thereby charging the battery of the beauty device. This allows for the adjustment of different charging currents and voltages according to different battery voltages, making it suitable for adapters of different specifications. It eliminates the need for a dedicated adapter to charge the beauty device, improving compatibility and reducing costs.

[0030] In one embodiment, such as Figure 2 As shown, the current adjustment unit 12 includes an adjustable current resistor R1 with adjustable resistance. One end of the adjustable current resistor R1 is electrically connected to the current setting port 111, and the other end of the adjustable current resistor R1 is grounded.

[0031] The adjustable current resistor R1 has multiple adjustment levels. Each level of the adjustable current resistor R1 corresponds to a charging current. The control chip 11 adjusts the resistance value of the adjustable current resistor R1 according to the battery voltage, thereby achieving multiple levels to adapt to the charging current of the adapter.

[0032] Optionally, the resistance value of the current-adjustable resistor R1 is proportional to the current of the current setting port 111.

[0033] Optionally, the adjustable current resistor R1 includes four adjustment levels, such as 20K, 75K, 200K, and NC, corresponding to adjustable charging currents of 0.4A, 0.6A, 0.8A, and 1A, respectively, enabling multi-level adjustment of the charging current. The adjustment levels of the adjustable current resistor R1 can also be set according to user needs, such as based on the adapter specifications of the beauty device. The more adapter specifications available, the more adjustment levels the adjustable current resistor R1 can offer.

[0034] In one embodiment, such as Figure 2 As shown, the voltage regulation unit 13 includes a voltage adjustable resistor R2 with adjustable resistance. One end of the voltage adjustable resistor R2 is electrically connected to the voltage setting port 112, and the other end of the voltage adjustable resistor R2 is grounded.

[0035] The voltage-adjustable resistor R2 has multiple adjustment levels. Each level of the voltage-adjustable resistor R2 corresponds to a charging voltage. The control chip 11 adjusts the resistance value of the voltage-adjustable resistor R2 according to the battery voltage, thereby achieving multiple levels to adapt to the charging voltage of the adapter.

[0036] Optionally, the resistance value of the voltage-adjustable resistor R2 is proportional to the voltage of the voltage setting port 112.

[0037] Optionally, the voltage-adjustable resistor R2 includes four adjustment levels, such as 0K, 2K, 5.1K, and NC, corresponding to adjustable charging voltages of 8.05V, 8.20V, 8.45V, and 8.40V, respectively, enabling multi-level adjustment of the charging voltage. The adjustment levels of the voltage-adjustable resistor R2 can also be set according to user needs, such as based on the adapter specifications of the beauty device. The more adapter specifications available, the more adjustment levels the voltage-adjustable resistor R2 can offer.

[0038] In one embodiment, such as Figure 2 As shown, the current regulating unit 12 further includes a first filter capacitor C1, and the voltage regulating unit 13 further includes a second filter capacitor C2. The first filter capacitor C1 is connected in parallel with the current adjustable resistor, and the second filter capacitor is connected in parallel with the voltage adjustable resistor.

[0039] The first filter capacitor C1 is used to filter out current fluctuations, and the second filter capacitor C2 is used to filter out voltage fluctuations, thereby improving stability.

[0040] In one embodiment, such as Figure 1As shown, it also includes a boost charging unit 14, and the control chip 11 also includes a switch port 115. One end of the boost charging unit 14 is electrically connected to an external power supply, and the other end of the boost charging unit 14 is electrically connected to the switch port 115.

[0041] The boost charging unit 14 is used to boost the voltage of the external power supply to charge the battery. The switch port 115 is used to control the opening and closing of the boost charging unit 14 according to the voltage of the external power supply. When the voltage of the external power supply meets the set charging voltage, the switch port 115 is opened, so that the boost charging unit 14 is in the closed state and does not perform boost charging. When the voltage of the external power supply is lower than the set charging voltage, the switch port 115 is opened, so that the boost charging unit 14 is turned on to perform boost charging and improve charging efficiency.

[0042] In one embodiment, such as Figure 2 As shown, the boost charging unit 14 includes an inductor L1, one end of which is electrically connected to an external power supply, and the other end of which is electrically connected to a switch port 115.

[0043] Inductor L1 is used to boost the external voltage. When switch port 115 is open, inductor L1 stores energy; when switch port 115 is closed, inductor L1 releases energy to boost and charge the input voltage. For example, when the switching frequency of switch port 115 is 400KHz, inductor L1 is set to 2.2uH. If the input voltage is 5V, inductor L1 can boost the output voltage to 8.4V, improving the charging efficiency by 93%.

[0044] In one embodiment, such as Figure 2 As shown, the boost charging unit 14 also includes a third filter capacitor C3, which is connected in parallel with the inductor L1 to improve stability.

[0045] In one embodiment, such as Figure 1 As shown, it also includes a charging temperature detection unit 15, and the control chip 11 also includes a charging temperature detection port 116, with the charging temperature detection unit 15 electrically connected to the charging temperature detection port 116.

[0046] The charging temperature detection unit 15 is used to detect the battery temperature. When the battery temperature is detected to be too high or too low, charging is stopped to prevent battery damage and improve stability.

[0047] In one embodiment, such as Figure 2 As shown, the charging temperature detection unit 15 includes a thermistor R3. One end of the thermistor R3 is electrically connected to the charging temperature detection port 116, and the other end of the thermistor R3 is grounded.

[0048] During testing, the control chip 11 discharges a certain current, such as 50uA, through the charging temperature detection port 116. Then, it detects the voltage generated by this current across the thermistor R3. The temperature is determined based on the voltage. If the voltage detected at the charging temperature detection port 116 is higher than the maximum voltage, it indicates that the battery temperature is too low, and charging is stopped. If the voltage detected at the charging temperature detection port 116 is lower than the minimum voltage, it indicates that the battery temperature is too high, and charging is stopped. If the voltage detected at the charging temperature detection port 116 is between the minimum and maximum voltages, it indicates that the battery temperature is normal, and charging proceeds normally.

[0049] In one embodiment, such as Figure 2 As shown, the charging temperature detection unit 15 also includes a fourth filter capacitor C4, which is connected in parallel with the thermistor R3 to improve stability.

[0050] In one embodiment, such as Figure 2 As shown, it also includes a light-emitting diode (LED) for displaying the charging status, which is connected in parallel with the current regulating unit 12.

[0051] An LED is connected in parallel with a current-adjustable resistor R1 to the current setting port 111. The LED is used to display the charging status. The LED is lit during charging and turns off when fully charged. If an abnormality is detected, the LED flashes to alert the user of the charging error, allowing for easy monitoring of the charging status. Simultaneously, the LED can also detect whether a battery is connected. If only an external power source is connected and no battery is connected, the voltage output port 114 outputs a high or low voltage, and the LED flashes. If a battery is detected, the voltage output port 114 outputs a stable voltage, and the LED remains constantly lit.

[0052] The present invention also provides a beauty device, including the beauty device charging circuit described above.

[0053] The above description is merely the principle and preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of this utility model, and these modifications should also be considered within the protection scope of this utility model.

Claims

1. A charging circuit for a beauty device, characterized in that, It includes a control chip, a current regulation unit, and a voltage regulation unit. The control chip includes a current setting port, a voltage setting port, a power input port electrically connected to an external power source, and a voltage output port electrically connected to the beauty device's battery. One end of the current setting port is electrically connected to the power input port, and the other end of the current setting port is electrically connected to the current regulating unit; One end of the voltage setting port is electrically connected to the power input port, and the other end of the voltage setting port is electrically connected to the voltage regulation unit.

2. The charging circuit for the beauty device as described in claim 1, characterized in that, The current regulating unit includes an adjustable current resistor with adjustable resistance. One end of the adjustable current resistor is electrically connected to the current setting port, and the other end of the adjustable current resistor is grounded.

3. The charging circuit for the beauty device as described in claim 2, characterized in that, The voltage regulation unit includes a voltage-adjustable resistor with adjustable resistance. One end of the voltage-adjustable resistor is electrically connected to the voltage setting port, and the other end of the voltage-adjustable resistor is grounded.

4. The charging circuit for the beauty device as described in claim 3, characterized in that, The current regulation unit further includes a first filter capacitor, and the voltage regulation unit further includes a second filter capacitor. The first filter capacitor is connected in parallel with the current adjustable resistor, and the second filter capacitor is connected in parallel with the voltage adjustable resistor.

5. The charging circuit for the beauty device as described in any one of claims 1-4, characterized in that, It also includes a boost charging unit, and the control chip also includes a switch port. One end of the boost charging unit is electrically connected to the external power supply, and the other end of the boost charging unit is electrically connected to the switch port.

6. The charging circuit for the beauty device as described in claim 5, characterized in that, The boost charging unit includes an inductor, one end of which is electrically connected to the external power supply, and the other end of which is electrically connected to the switch port.

7. The charging circuit for the beauty device as described in any one of claims 1-4, characterized in that, It also includes a charging temperature detection unit, and the control chip also includes a charging temperature detection port, the charging temperature detection unit being electrically connected to the charging temperature detection port.

8. The charging circuit for the beauty device as described in claim 7, characterized in that, The charging temperature detection unit includes a thermistor, one end of which is electrically connected to the charging temperature detection port, and the other end of which is grounded.

9. The charging circuit for the beauty device as described in any one of claims 2-4, characterized in that, It also includes a light-emitting diode (LED) for indicating the charging status, the LED being connected in parallel with the current-adjustable resistor.

10. A beauty device, characterized in that, Includes the beauty device charging circuit as described in any one of claims 1-9.

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