Care device and charging assembly

Abstract

Disclosed in embodiments of the present description are a care device and a charging assembly. A switch module is connected in series to a power supply circuit of a charging assembly end, such that the connection / disconnection of the power supply circuit for charging a care device body is controlled by means of the switch module. If a first control module at the care device body determines that a conductive foreign object exists at an electrical interface, a feedback signal is sent to a second control module. Upon reception of the feedback signal, the second control module controls the switch module to be turned off, so that the power supply circuit is disconnected, i.e., the power supply circuit for charging the care device body is disconnected. The power supply for the care device body is turned off at the charging assembly end to form power-off protection, thereby avoiding shorting of the power supply circuit at the electrical interface, and improving the charging safety of the device.

Description

A nursing device and a charging component

[0001] Cross-references

[0002] This application claims priority to Chinese Patent Application No. 2024118030293, filed on December 6, 2024, entitled "A Nursing Device and a Charging Assembly". The entire contents of that Chinese patent application are incorporated herein by reference. Technical Field

[0003] This application relates to the technical field of nursing devices, and more particularly to a nursing device and a charging component. Background Technology

[0004] Electric toothbrushes, shavers, and other personal care devices inevitably come into contact with water during use. Improper use by users may cause water to seep into the electrical interface. Furthermore, these devices are usually placed in bathrooms, where the high humidity can also allow moisture to seep into the electrical interface. This could lead to a short circuit in the electrical interface during charging, and if the device continues to charge, it could even cause the electrical interface to melt or pose a fire hazard.

[0005] Currently, no truly secure solution has been proposed to address the aforementioned issues. Summary of the Invention

[0006] This specification provides a nursing device and a charging component to address the charging safety issues present in existing nursing devices.

[0007] To solve the above-mentioned technical problems, the embodiments in this specification are implemented as follows:

[0008] A nursing device, the nursing device comprising: a nursing device body and a charging component;

[0009] The nursing device body includes: an electrical interface and a first control module; the electrical interface is configured as an electrical connection port for charging the nursing device body;

[0010] The charging component includes: a second control module and a switch module; the switch module is connected in series with the power supply circuit in the charging component;

[0011] The second control module is communicatively connected to the first control module;

[0012] The first control module is configured to send a feedback signal to the second control module if a conductive foreign object is present in the electrical interface; the second control module is configured to control the switch module to disconnect after receiving the feedback signal.

[0013] A charging component, the charging component comprising a switching module and a second control module;

[0014] The switching module is connected in series with the power supply circuit of the charging component;

[0015] The second control module is configured to control the switch module to disconnect if it receives a feedback signal from the first control module; the first control module is a module that is communicatively connected to the second control module; the first control module is configured to send the feedback signal to the second control module if there is a conductive foreign object in the electrical interface of the device being charged by the charging component; the electrical interface is configured as the electrical connection port of the device.

[0016] At least one embodiment in this specification achieves the following beneficial effects: by connecting a switch module in series in the power supply circuit of the charging component, the switch module controls the on / off state of the power supply circuit that supplies power or charges the nursing device body. If the first control module at the nursing device body determines that there is a conductive foreign object at the electrical interface, it sends a feedback signal to the second control module. Upon receiving the feedback signal, the second control module controls the switch module to disconnect, thereby breaking the power supply circuit and disconnecting the power supply circuit for charging the nursing device body. Disconnecting the power supply to the nursing device body from the charging component provides power-off protection, preventing short circuits in the power supply circuit at the electrical interface and improving the safety of device charging. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a structural schematic diagram of a nursing device provided in an embodiment of this specification;

[0019] Figure 2 is a schematic diagram of an electrical interface provided in an embodiment of this specification;

[0020] Figure 3 is a schematic diagram of an electrical connector provided in an embodiment of this specification;

[0021] Figure 4 is a schematic diagram of the overall structure of a detection and protection system provided in an embodiment of this specification;

[0022] Figure 5 is a schematic diagram of the electrical structure of a detection and protection system provided in an embodiment of this specification.

[0023] Reference numerals: 1. Nursing equipment body; 11. First control module; 12. Electrical interface; 13. Detection module; 14. Second protection circuit; 2. Charging component; 21. Adapter; 22. Transmission cable; 221. Second control module; 222. Switch module. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of one or more embodiments of this specification clearer, the technical solutions of one or more embodiments of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of one or more embodiments of this specification.

[0025] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0026] Figure 1 is a schematic diagram of the structure of a nursing device provided in an embodiment of this specification. As shown in Figure 1, the nursing device provided in this application may include a nursing device body 1 and a charging component 2.

[0027] The nursing device body 1 may include an electrical interface 12 and a first control module 11; the electrical interface 12 may be configured as an electrical connection port for charging the nursing device body.

[0028] The charging component 2 may include a second control module 221 and a switch module 222; the switch module 222 is connected in series with the power supply circuit in the charging component 2.

[0029] The second control module 221 is communicatively connected to the first control module 11.

[0030] The first control module 11 can be configured to send a feedback signal to the second control module 221 if there is a conductive foreign object in the electrical interface 12; the second control module 221 is configured to control the switch module 222 to disconnect after receiving the feedback signal.

[0031] In the embodiments of this specification, the nursing device body 1 may be an electric shaver, an electric hair clipper, an electric facial cleanser, an electric dental flosser, or other similar devices; the charging component 2 may be a device for charging the aforementioned nursing device body 1.

[0032] The first control module 11 and the second control module 221 can be control modules including at least one of a circuit board and an MCU; the types and models of the first control module 11 and the second control module 221 can be the same or different, and no specific limitation is made here.

[0033] In practical applications, the first control module 11 and the second control module 221 can communicate wirelessly. Specifically, the first control module 11 and the second control module 221, both equipped with wireless communication capabilities, can be selected to achieve wireless communication; alternatively, wireless communication can be achieved by configuring wireless communication units for each of the first control module 11 and the second control module 221.

[0034] The first control module 11 and the second control module 221 can also communicate via wired connection.

[0035] In this embodiment of the specification, the electrical interface 12 may be an interface located on the nursing device body 1, used to provide power to the nursing device body. Specifically, the electrical interface 12 may be used to charge the energy storage element configured in the nursing device body 1; or it may be used to directly provide power to the nursing device body 1. In this embodiment of the specification, charging the nursing device body may be done by charging the energy storage element configured in the nursing device body 1; or it may be used to directly provide power to the nursing device body 1. The electrical interface 12 may be a Type-C interface, a lighting interface, a trapezoidal Micro USB interface, etc. The conductive foreign object may be a conductive liquid, a conductive solid, etc.

[0036] Specifically, the charging component 2 may include a power supply circuit. Understandably, after the charging component 2 is connected to a power source, if the power supply circuit is active, it can charge the nursing device body 1; if the power supply circuit is disconnected, charging of the nursing device body 1 will stop. During charging, if conductive foreign objects are present in the electrical interface 12, it may cause a short circuit in the power supply circuit at the electrical interface 12, potentially damaging the electrical interface 12 or the nursing device body 1, and in severe cases, even causing a fire. Therefore, if conductive foreign objects are detected in the electrical interface 12 during charging, certain protective measures need to be taken.

[0037] In this embodiment, the switch module 222 is connected in series in the power supply circuit of the charging component 2, allowing the switch module 222 to control whether the power supply circuit is on or off. Specifically, when the second control module 221 receives a feedback signal from the first control module 11 indicating the presence of a conductive foreign object in the electrical interface 12, it can control the switch module 222 to disconnect, thereby creating an open circuit in the power supply circuit, i.e., disconnecting the power supply for charging the nursing device body. Disconnecting the power supply for charging the nursing device body 1 from the charging component 2 provides power-off protection, preventing a short circuit in the power supply circuit at the electrical interface 12 and improving the safety of charging the nursing device.

[0038] In practical applications, wireless communication is easily affected by electromagnetic waves and other external factors, which may affect signal transmission speed and stability, resulting in poor communication reliability. In order to ensure that the second control module 221 can receive the feedback signal sent by the first control module 11 and ensure the safety of charging the nursing device, the embodiments of this specification can preferentially use wired communication.

[0039] Specifically, at least one pin of the electrical interface 12 is configured as a first communication pin; the first control module 11 is connected to the first communication pin.

[0040] The charging component 2 also includes a transmission cable 22 with an electrical connector; at least one pin of the electrical connector is configured as a second communication pin; the second control module 221 is connected to the second communication pin.

[0041] The electrical interface 12 is coupled to the electrical connector, the first communication pin and the second communication pin are connected to form an electrical circuit, and the second control module 221 is communicatively connected to the first control module 11.

[0042] Figure 2 is a schematic diagram of an electrical interface provided in an embodiment of this specification. As shown in Figure 2, the electrical interface 12 may have multiple pins.

[0043] Figure 3 is a schematic diagram of an electrical connector provided in an embodiment of this specification. As shown in Figure 3, the electrical connector may also have multiple pins.

[0044] When the electrical interface 12 is coupled to the electrical connector, multiple pins in the electrical interface 12 can be connected to multiple pins in the electrical connector to perform energy transfer or signal transfer.

[0045] In the embodiments described in this specification, when the electrical interface 12 is coupled to the electrical connector, the first communication pin can be connected to the second communication pin to form a complete communication link, enabling the first control module 11 to communicate with the second control module 221. The first communication pin can be connected to either the data transmission pin or the signal output pin of the first control module 11; the specific connection can be selected based on actual conditions and is not specifically limited here. The second communication pin can be connected to either the data reception pin or the signal input pin of the second control module 221; the specific connection can be selected based on actual conditions and is not specifically limited here.

[0046] In practical applications, the TX pin in electrical interface 12 can be used as the first communication pin, and the corresponding TX pin in the electrical connector can be used as the second communication pin. Alternatively, the RX pin in electrical interface 12 can be used as the first communication pin, and the corresponding RX pin in the electrical connector can be used as the second communication pin.

[0047] In one implementation, the two symmetrically arranged TX pins in electrical interface 12 can be used as the first communication pins, and correspondingly, the two symmetrically arranged TX pins in the corresponding positions of the electrical connector can be used as the second communication pins. Alternatively, the two symmetrically arranged RX pins in electrical interface 12 can be used as the first communication pins, and correspondingly, the two symmetrically arranged RX pins in the corresponding positions of the electrical connector can be used as the second communication pins. Therefore, communication can be achieved between electrical interface 12 and the electrical connector regardless of whether they are plugged in the correct orientation.

[0048] In the embodiments described in this specification, wired communication between the first control module 11 and the second control module 221 is achieved directly using electrical connectors and electrical interfaces 12. There is no need to select a control module with communication functions, nor is there a need to configure an additional wireless communication unit, thus saving resources and costs. At the same time, it improves the success rate of the second control module 221 receiving feedback signals sent by the first control module 11, thereby improving the charging safety of the nursing device.

[0049] Optionally, the electrical interface 12 may be configured to have two first communication pins, which may be located on opposite sides of the electrical interface 12, and / or...

[0050] The electrical connector may be configured to have two second communication pins, which may be located on opposite sides of the electrical connector.

[0051] The electrical interface 12 may include two first communication pins, which can be arranged diagonally opposite each other, as shown in Figure 2 as TX or RX. Both first communication pins can be connected to the data transmission pins of the first control module 11. Of course, the electrical interface 12 may also have only one first communication pin.

[0052] The electrical connector may also include two second communication pins, which can be arranged diagonally opposite each other, as shown by TX or RX in Figure 3. Both second communication pins can be connected to the data receiving pins of the second control module 221. Of course, the electrical connector may also have only one second communication pin.

[0053] In this embodiment of the specification, at least one of the electrical interface 12 and the electrical connector is provided with two communication pins, and the two communication pins are arranged diagonally opposite each other. This makes it unnecessary to identify the orientation when the electrical connector is connected to the electrical interface 12, thus improving ease of use. At the same time, it avoids the situation where the first control module 11 and the second control module 221 cannot communicate when the electrical connector is connected to the electrical interface 12 in the wrong orientation, thereby improving the charging safety of the nursing device.

[0054] In practical applications, when merchants sell equipment, the charging component 2 may only be the transmission cable 22.

[0055] Optionally, the charging component 2 is a transmission cable 22; the second control module 221 and the switch module 222 are configured in the transmission cable 22.

[0056] The transmission cable 22 can be a data cable with charging and data or signal transmission functions.

[0057] Optionally, the transmission cable 22 may include wire and electrical connectors.

[0058] The second control module 221 and the switch module 222 are configured in the wire; or,

[0059] The second control module 221 and the switch module 222 are configured in the electrical connector; or,

[0060] One of the second control module 221 and the switch module 222 is configured in the electrical connector, and the other is configured in the wire.

[0061] In practical applications, the transmission cable 22 typically includes wire and electrical connectors; in this embodiment, the second control module 221 and the switch module 222 can be housed within the wire of the transmission cable 22. Since the wire is usually a flexible structure, a protective shell can be provided on the wire to protect the second control module 221 and the switch module 222 from damage when the wire is bent. Housed within the wire, the second control module 221 and the switch module 222 are protected from the influence of other electrical components in the transmission cable 22 on the second control module 221. Furthermore, the protective shell on the wire makes it easier for users to distinguish the transmission cable 22 with power-off protection from other data cables.

[0062] Alternatively, the second control module 221 and the switch module 222 can be housed within the electrical connector. This placement allows the second control module 221 to be closer to the second communication pin, effectively simplifying the internal wiring structure. Furthermore, since the electrical connector also includes other circuitry, this arrangement avoids the need for separate installation locations and structures for the second control module 221 and the switch module 222, simplifying the structure of the transmission cable 22.

[0063] In practical applications, depending on actual needs, one of the second control module 221 and the switch module 222 can be located in the electrical connector, and the other can be located in the wiring. For example, the second control module 221 can be located in the electrical connector, and the switch module 222 can be located in the wiring. Alternatively, the second control module 221 can be located in the wiring, and the switch module 222 can be located in the electrical connector.

[0064] Optionally, the charging component 2 may also be simply an adapter 21; the second control module 221 and the switch module 222 may be configured within the adapter 21.

[0065] Because the circuit board inside adapter 21 is relatively large, placing the second control module 221 and the switch module 222 inside adapter 21 facilitates their arrangement. Understandably, to ensure wired communication between the second control module 221 and the first control module 11 within adapter 21, a data transmission line configured with a communication line and a first communication pin is required.

[0066] In practical applications, when the charging component 2 is used to charge the energy storage element in the nursing device body 1, if the charging voltage does not match the standard charging voltage specified by the energy storage element, or the charging current does not match the standard charging current specified by the energy storage element, although charging can still be performed, it may affect the service life of the energy storage element.

[0067] Therefore, optionally, the charging component 2 can be a transmission cable 22 and an adapter 21.

[0068] The second control module 221 and the switch module 222 are configured within the transmission cable 22; or,

[0069] The second control module 221 and the switch module 222 are configured within the adapter 21; or,

[0070] One of the second control module 221 and the switch module 222 is configured in the adapter 21, and the other is configured in the transmission cable 22.

[0071] In this embodiment of the specification, the energy storage element is charged using the adapter 21 and transmission cable 22 that are compatible with the nursing equipment. This ensures that the charging voltage matches the standard charging voltage of the energy storage component and that the charging current matches the standard charging current of the energy storage component, thereby extending the service life of the energy storage element.

[0072] In practical applications, if the charging component 2 includes a transmission cable 22 and an adapter 21, the positions of the second control module 221 and the switch module 222 can be set according to actual needs.

[0073] If the second control module 221 and the switch module 222 are configured inside the transmission cable 22, it can also be determined whether the second control module 221 and the switch module 222 are located in the cable or in the charging connector according to actual needs.

[0074] Optionally, the second control module 221 may include a control unit and a first protection circuit.

[0075] The control unit can be an MCU; the control unit can be connected to both the switch module and the first control module. The control unit can control the switch module 222 to turn on and off based on the feedback signal sent by the first control module.

[0076] The first protection circuit can be used to protect the control unit from damage under conditions such as overvoltage, overcurrent, surge, and electromagnetic interference. The specific structure of the first protection circuit is not specifically defined here.

[0077] By using a first protection circuit to protect the control unit, the normal operation of the control unit can be effectively ensured, and damage to the control unit can be avoided. For example, it can ensure that the control unit can receive the feedback signal sent by the first control module 11 and output the corresponding control signal, thereby further ensuring the safety of the nursing equipment during charging.

[0078] In order to facilitate the control of the switching module 222 to turn on and off, in the embodiments of this specification, the switching module 222 with a control terminal can be preferred.

[0079] Optionally, the switch module 222 may have an input terminal, an output terminal, and a control terminal; the input terminal may be connected to one end of the power input line in the power supply circuit; the output terminal may be connected to the other end of the power input line; and the control terminal may be connected to the output pin of the second control module 221.

[0080] In this embodiment, the switch module 222 can be an electronic switch with an input terminal, an output terminal, and a control terminal. The input and output terminals of the switch module 222 can be connected in series in the power input line of the power supply circuit to control the on / off state of the power input line. The control terminal can control whether the input and output terminals of the switch module 222 are connected, thereby controlling the on / off state of the power input line. It can be understood that when the input and output terminals of the switch module 222 are connected, the power input line is connected, the power supply circuit is closed, and the nursing device body 1 can be charged; when the input and output terminals of the switch module 222 are not connected, the power input line is not connected, the power supply circuit is open, which is equivalent to disconnecting the charging power supply of the nursing device body 1, thereby stopping the charging of the nursing device body 1.

[0081] In practical applications, the control terminal of the switch module 222 can be connected to an output pin of the second control module 221. When the second control module 221 receives a feedback signal from the first control module 11 indicating the presence of a conductive foreign object in the electrical interface 12, the second control module 221 can control the output pin connected to the control terminal to output a low-level signal or a high-level signal, thereby controlling the input terminal and the output terminal to disconnect.

[0082] In this embodiment of the specification, after the second control module 221 controls the input and output terminals of the switch module 222 to disconnect via the control terminal, it can also output a control signal after a first time interval to control the input and output terminals to conduct, so that the charging component 2 can be used next time. If the first control module 11 determines that there are still conductive foreign objects in the electrical interface 12 next time, the second control module 221 can control the input and output terminals of the switch module 222 to disconnect again based on the feedback signal sent by the first control module 11. If the second control module 221 receives more than a preset value of feedback signals within a preset time interval, it indicates that the user has not cleaned the conductive foreign objects at the electrical interface 12, nor disconnected the electrical interface 12 and the electrical connector; it can control the input and output terminals of the switch module 222 to conduct via an output signal after a second time interval; the second time interval is longer than the first time interval.

[0083] In this embodiment of the specification, when the second control module 221 receives a feedback signal from the first control module 11 indicating the presence of a conductive foreign object in the electrical interface 12, it disconnects the power supply circuit for charging the nursing device body 1 through the switch module 222, thereby preventing a short circuit in the power supply circuit at the electrical interface 12 and fundamentally ensuring the charging safety of the nursing device body 1.

[0084] Optionally, the switching module 222 can be a MOSFET; the source of the MOSFET can be connected to one end of the power input line; the drain of the MOSFET can be connected to the other end of the power input line; and the gate of the MOSFET can be connected to the output pin of the second control module 221.

[0085] In the embodiments described in this specification, the source (S) of the MOSFET can be used as the input terminal, the drain (D) as the output terminal, and the gate (G) as the control terminal. The source (S) and drain (D) of the MOSFET can be connected in series in the power input line. The MOSFET's conduction can be controlled by controlling its gate (G).

[0086] Understandably, when the MOSFET is an NMOS transistor, the output pin of the second control module 221 connected to the gate G of the MOSFET can control the MOSFET to turn off by outputting a low-level signal; when the MOSFET is a PMOS transistor, the output pin of the second control module 221 connected to the gate G of the MOSFET can control the MOSFET to turn off by outputting a high-level signal.

[0087] In practical applications, the switch module 222 can also be other electronic switches capable of automatic control, such as bipolar junction transistors, field-effect transistors, and miniature relays.

[0088] Optionally, the care device may further include a care component, which may include bristles, a nozzle, a bristle carrier, and a brush handle, the brush handle being configured to have a liquid flow channel.

[0089] In the embodiments of this specification, the nursing device can be an electric shaver, electric hair clipper, electric facial cleanser, electric dental flosser, or a composite oral care device with brushing and flossing functions. The nursing components may include brush bristles for brushing teeth and nozzles for flossing teeth.

[0090] The nozzle can be integrally formed with the bristle carrier, or it can be separately mounted on the bristle carrier or separately mounted on the brush handle. The nozzle can be partially or completely arranged around the bristle area, or it can be set relatively independently from the bristle area.

[0091] In the embodiments described in this specification, the liquid channel may be a passage located inside the brush handle for the flossing fluid to pass through. The flossing fluid can reach the nozzle through the liquid channel and be ejected from the nozzle.

[0092] To achieve the effects of brushing and rinsing teeth, dental care devices often include drive components.

[0093] Optionally, the care device may further include a drive assembly, which may include a pump assembly and / or a motor assembly coupled to the care assembly.

[0094] In the embodiments described in this specification, the motor assembly may include a motor and a motor shaft. The output end of the motor shaft may be fixedly connected to the care assembly. The motor, through the motor shaft, can drive the brush bristles in the care assembly to reciprocate or rotate.

[0095] The pump assembly can be a power unit that pumps the oral irrigating fluid to the nozzle. Specifically, the motor shaft can be a hollow shaft; one end of the hollow part of the motor shaft can be connected to the output end of the pump assembly, and the other end can be connected to the liquid flow channel of the brush handle. Under the power of the pump assembly, the oral irrigating fluid can enter the hollow part of the motor shaft, pass through the liquid flow channel at the brush handle, reach the nozzle, and provide a jet to the user's mouth, thereby achieving oral cleaning.

[0096] In practical applications, combined oral care devices with brushing and flossing functions can be used individually or together. The device itself may also have a button for the user to select the oral cleaning mode.

[0097] This embodiment also provides specific details on detecting whether there are conductive foreign objects in the electrical interface 12.

[0098] Optionally, the nursing device body 1 may further include a detection module 13, which may be communicatively connected to the first control module 11; the detection module 13 may be configured to send a first electrical signal to the first control module 11; the first electrical signal may be used to reflect the potential at the first pin in the electrical interface 12.

[0099] The first control module 11 can also be configured to send the feedback signal to the second control module 221 according to the first electrical signal.

[0100] In practical applications, the detection module 13 can communicate with the first control module 11 via serial communication. Specifically, the first control module 11 can communicate with the second control module 221 via one or more of the following communication methods: SPI, IIC, RS232, and RS485.

[0101] In the embodiments described in this specification, the first pin can be any one of the electrical interface 12 other than the power input pin; specifically, the first pin can be a pin close to the power input pin VBUS, for example, the first pin can be the SBU1 pin, as shown in Figure 2 or Figure 3.

[0102] Because the electrical interface 12 is small in size, in environments such as bathrooms, the entire electrical interface 12 or most of the electrical interface 12 is easily covered by water, which can cause a short circuit between the first pin and the power input pin VBUS, thereby increasing the potential of the first pin. Therefore, the presence of conductive foreign objects in the electrical interface 12 can be detected by detecting the potential of the first pin.

[0103] In the embodiments described in this specification, specific details regarding the detection of the potential at the first pin are also provided.

[0104] Optionally, the detection module 13 may include a first voltage acquisition circuit; the first voltage acquisition circuit may be configured to detect the potential signal at the first pin.

[0105] Specifically, the first control module 11 can be configured to send the feedback signal to the second control module 221 if the potential reflected by the potential signal exceeds a preset potential threshold.

[0106] The first voltage acquisition circuit can be an ADC voltage sampling circuit. The detection module can send the potential signal at the first pin acquired by the first voltage acquisition circuit to the first control module 11. The first control module 11 can determine the potential of the first pin based on the potential signal. If the potential at the first pin exceeds a preset potential threshold, it means that there may be a conductive foreign object in the electrical interface 12. The first control unit can then send a feedback signal to the second control module 221 so that the second control module 221 can control the switch module 222 to disconnect based on the feedback signal. If the potential does not exceed the preset potential threshold, it can be determined that there is no conductive foreign object between the first pin and the power input pin VBUS.

[0107] In the embodiments of this specification, if it is determined that there is no conductive foreign object between the first pin and the power input pin VBUS, it is possible to further detect whether there is a conductive foreign object between the first pin and other pins to ensure the availability of other pins.

[0108] Optionally, the detection module 13 can also be configured to send a second electrical signal to the first control module 11; the second electrical signal can be used to reflect the resistance value between the first pin and the second pin.

[0109] The first control module 11 can also be configured to send the feedback signal to the second control module 221 according to the second electrical signal.

[0110] The second pin can be placed adjacent to or spaced apart from the first pin; for example, the second pin can be a ground pin (GND pin).

[0111] In the embodiments of this specification, specific details of acquiring the second electrical signal and sending a feedback signal based on the second electrical signal are also provided.

[0112] Optionally, the detection module 13 may further include a sensing circuit and a second voltage acquisition circuit.

[0113] The sensing circuit forms a return circuit with at least the first pin and the second pin; the return circuit may include a current source; the current source can be turned on by the first control module 11 when the potential is less than a preset potential threshold.

[0114] The second voltage acquisition circuit can be configured to detect the voltage value between the first pin and the second pin; the second electrical signal includes the voltage value and the current value; the current value is the value of the current output by the current source in the return circuit.

[0115] The first control module 11 can be specifically configured as follows:

[0116] The resistance value between the first pin and the second pin is determined based on the voltage value and the current value.

[0117] If the resistance value is less than the preset resistance threshold, the feedback signal is sent to the second control module 221.

[0118] In this embodiment, the sensing circuit is connected to the first and second pins to form a return current circuit. A current source can also be included in the return current circuit to provide voltage. In this embodiment, the current value output by the current source can be customized according to actual needs within the circuit's safety range. Specifically, the current value can be set to 1uA, 10uA, 100uA, 1mA, etc.

[0119] The second voltage acquisition circuit can be an ADC voltage sampling circuit; the second voltage acquisition circuit can be the same as the first voltage acquisition circuit; or it can be a separate voltage sampling circuit. The second voltage acquisition circuit can detect the voltage value between the first pin and the second pin.

[0120] In practical applications, if the potential of the first pin does not exceed the preset potential threshold, the first control module 11 can control the current source in the return circuit to turn on so that the return circuit is powered on.

[0121] The presence of conductive foreign matter between the first and second pins will cause a short circuit between them, thus reducing the resistance between them. Therefore, the presence of conductive foreign matter between the first and second pins can be determined based on the resistance between them.

[0122] Specifically, the second electrical signal may include the voltage value between the first and second pins detected by the second voltage acquisition circuit, and the current value output by the current source; the first control module 11 can calculate the resistance between the first and second pins based on the voltage and current values. In another embodiment, the second electrical signal may include the resistance value calculated by the sensing circuit based on the current and voltage values, that is, the sensing circuit can directly calculate the resistance value, avoiding the need for the first control module 11 to recalculate after receiving the current and voltage values ​​fed back from the sensing circuit.

[0123] If the resistance value determined by the first control module 11 is less than the preset resistance threshold, it indicates that there is a conductive foreign object between the first pin and the second pin, which causes the resistance between the first pin and the second pin to decrease. Therefore, the first control module 11 can send a feedback signal to the second control module 221 so that the second control module 221 can disconnect the power supply circuit for charging the nursing device body 1.

[0124] If the resistance value is greater than or equal to the preset resistance threshold, it indicates that the resistance between the first pin and the second pin is normal. This confirms that there are no conductive foreign objects between the first pin and the second pin; therefore, there is no need to send a feedback signal to the second control module 221.

[0125] In addition, when the current output by the current source is a fixed current, the second electrical signal may only include the voltage value between the first pin and the second pin detected by the second voltage acquisition circuit; since the current value is constant, if the voltage value between the first pin and the second pin is less than the preset value, it can also indicate that there is a conductive foreign object between the first pin and the second pin.

[0126] In this embodiment of the specification, since the user may also use other charging components 2 to charge the nursing device body 1; in order to avoid damage to the electrical interface 12 or the nursing device body 1 caused by conductive foreign objects in the electrical interface 12 during charging, a protection circuit can also be set at the nursing device body 1 to further protect the charging safety of the nursing device body 1.

[0127] Based on this, optionally, the nursing device body 1 may also include a second protection circuit 14; the second protection circuit 14 may have an electronic switch, the input terminal of the electronic switch may be connected to the power input line in the power supply circuit, the output terminal of the electronic switch may be connected to the ground line in the power supply circuit; the control terminal of the electronic switch may be connected to the output pin of the first control module 11.

[0128] The first control module 11 can be configured to send a protection command to the second protection circuit 14 if it is determined that there is a conductive foreign object in the electrical interface 12; the protection command is used to control the electronic switch in the second protection circuit 14 to be turned on.

[0129] In the embodiments of this specification, the electronic switch in the second protection circuit 14 can be an electronic switch with low internal resistance when it is turned on. For example, the electronic switch can be a MOSFET, whose internal resistance is in the milliohm range when it is turned on.

[0130] In practical applications, when charging the nursing device body 1 using the charging component 2 without power-off protection, if there is a conductive foreign object in the electrical interface 12, it will cause a short circuit in the power supply circuit at the electrical interface 12. In this embodiment of the specification, the input terminal of the electronic switch in the second protection circuit 14 is connected to the power input line VIN in the power supply circuit, and the output terminal is connected to the ground line GND in the power supply circuit, so that the circuit short-circuited at the electrical interface 12 is connected in parallel with the second protection circuit 14; and since the internal resistance of the electronic switch in the second protection circuit 14 is at the milliohm level when it is turned on, which is much smaller than the impedance of the short-circuit loop inside the electrical interface 12, most of the current output by the power supply circuit can be shunted by the second protection circuit 14; thereby, the continuous heating of the short-circuit loop inside the electrical interface 12 can be avoided, and the situation of the electrical interface 12 melting can be avoided.

[0131] If there is a conductive foreign object in the electrical interface 12, a prompt message can be sent to the user so that the user is aware of it and can take appropriate measures.

[0132] Optionally, the nursing device body 1 may further include an information prompting component connected to the first control module 11.

[0133] The first control module 11 is further configured to send a prompt signal to the information prompting component if a conductive foreign object is present in the electrical interface 12; the information prompting component is used to issue a prompt message to the user that a conductive foreign object is present in the electrical interface 12.

[0134] The information prompt component can be a visual prompt component; for example, a display screen or an indicator light. If the prompt component is a display screen, the prompt signal can be a signal that controls the display screen to show text prompt information. If the prompt component is an indicator light, the prompt signal can be a signal that controls the indicator light to light up in a preset color or flash at a preset frequency.

[0135] The information prompt component can also be a voice prompt component; if the prompt component is a voice prompt component, the prompt signal can be a signal that controls the voice prompt component to output voice prompt information.

[0136] The information prompt component can also be a motor; if the prompt component is a motor, the prompt signal can be a signal that controls the motor vibration.

[0137] As an optional implementation, embodiments of this specification also provide a charging component for addressing charging safety issues present in existing nursing devices.

[0138] The charging component 2 may include a switch module 222 and a second control module 221.

[0139] The switch module 222 is connected in series with the power supply circuit of the charging component 2.

[0140] The second control module 221 is configured to control the switch module 222 to disconnect if it receives a feedback signal from the first control module 11; the first control module 11 is a module that is communicatively connected to the second control module 221; the first control module 11 is configured to send the feedback signal to the second control module 221 if there is a conductive foreign object in the electrical interface 12 of the device being charged by the charging component 2; the electrical interface 12 is configured as the electrical connection port of the device.

[0141] In this embodiment of the specification, the charging component 2 can charge the device via the electrical interface 12. The device can be any device with the electrical interface 12; for example, the device can be an electric shaver, electric hair clipper, electric facial cleanser, electric dental flosser, mobile phone, earphones, or other electronic products.

[0142] Electrical interface 12 can be a Type-C interface, a flashing interface, or a trapezoidal Micro USB interface.

[0143] The first control module 11 and the second control module 221 can be modules including at least one of a circuit board and an MCU; the first control module 11 and the second control module 221 can be of the same type or different. The first control module 11 and the second control module 221 can communicate via wired or wireless means.

[0144] The first control module 11 can be a control module installed on the device side; when the first control module in the device determines that there is a conductive foreign object in the electrical interface 12, the first control module 11 can send a feedback signal to the second control module 221.

[0145] In practical applications, the detection module 13 in the device can be used to collect electrical signals from the electrical interface 12. The first control module 11 can then determine whether there are conductive foreign objects in the electrical interface 12 based on the electrical signals collected by the detection module 13. The relevant content of the detection module 13 and the principle of the first control module 11 in determining whether there are conductive foreign objects in the electrical interface 12 have been described in detail above and will not be repeated here.

[0146] In this embodiment, the switch module 222 and the second control module 221 are disposed in the charging assembly 2, and the switch module 222 is connected in series in the power supply circuit of the charging assembly 2. This allows the switch module 222 to control whether the power supply circuit is conducting. When the second control module 221 receives a feedback signal indicating the presence of a conductive foreign object in the electrical interface 12, it can control the switch module 222 to disconnect, thus breaking the power supply circuit and disconnecting the power supply for charging the nursing device. Disconnecting the power supply for charging the nursing device 1 from the charging assembly 2 provides power-off protection, preventing a short circuit at the electrical interface 12 and improving the charging safety of the device.

[0147] In practical applications, wireless communication is easily affected by electromagnetic waves and other external factors, which may affect signal transmission speed and stability, resulting in poor communication reliability. To ensure security, the embodiments in this specification may prioritize the use of wired communication.

[0148] Optionally, the charging component 2 includes a transmission cable 22 with an electrical connector.

[0149] At least one pin of the electrical interface 12 is configured as a first communication pin; the first control module 11 is connected to the first communication pin.

[0150] At least one pin of the electrical connector is configured as a second communication pin; the second control module 221 is connected to the second communication pin.

[0151] The electrical interface 12 is coupled to the electrical connector, the first communication pin and the second communication pin are connected to form an electrical circuit, and the second control module 221 is communicatively connected to the first control module 11.

[0152] As shown in Figure 2, the electrical interface 12 can be equipped with multiple pins.

[0153] As shown in Figure 3, the electrical connector may also have multiple pins; when the electrical interface 12 is coupled to the electrical connector, the multiple pins in the electrical interface 12 can be connected to the multiple pins in the electrical connector to perform energy transfer or signal transfer.

[0154] In the embodiments described in this specification, when the electrical interface 12 is coupled to the electrical connector, the first communication pin can be connected to the second communication pin to form a complete communication link, enabling the first control module 11 to communicate with the second control module 221. The first communication pin can be connected to either the data transmission pin or the signal output pin of the first control module 11; the specific connection can be selected based on actual conditions and is not specifically limited here. The second communication pin can be connected to either the data reception pin or the signal input pin of the second control module 221; the specific connection can be selected based on actual conditions and is not specifically limited here.

[0155] In practical applications, the TX pin in electrical interface 12 can be used as the first communication pin, and the corresponding TX pin in the electrical connector can be used as the second communication pin. Alternatively, the RX pin in electrical interface 12 can be used as the first communication pin, and the corresponding RX pin in the electrical connector can be used as the second communication pin.

[0156] In one implementation, the two symmetrically arranged TX pins in electrical interface 12 can be used as the first communication pins, and correspondingly, the two symmetrically arranged TX pins in the corresponding positions of the electrical connector can be used as the second communication pins. Alternatively, the two symmetrically arranged RX pins in electrical interface 12 can be used as the first communication pins, and correspondingly, the two symmetrically arranged RX pins in the corresponding positions of the electrical connector can be used as the second communication pins. Therefore, communication can be achieved between electrical interface 12 and the electrical connector regardless of whether they are plugged in the correct orientation.

[0157] In the embodiments described in this specification, wired communication between the first control module 11 and the second control module 221 is achieved directly using electrical connectors and electrical interfaces 12. There is no need to select a control module with communication functions, nor is there a need to configure an additional wireless communication unit, thus saving resources and costs. At the same time, it improves the success rate of the second control module 221 receiving feedback signals sent by the first control module 11, thereby improving the charging safety of the nursing device.

[0158] Optionally, the charging component 2 may be a transmission cable 22; the second control module 221 and the switch module 222 are configured in the transmission cable 22.

[0159] Optionally, the transmission cable 22 may include wire and electrical connectors.

[0160] The second control module 221 and the switch module 222 are configured in the wire; or,

[0161] The second control module 221 and the switch module 222 are configured in the electrical connector; or,

[0162] One of the second control module 221 and the switch module 222 is configured in the electrical connector, and the other is configured in the wire.

[0163] The transmission cable 22 can be a data cable with charging and data signal transmission functions.

[0164] To reduce carbon emissions and e-waste, vendors sometimes only include the transmission cable 22 when selling equipment. Therefore, the second control module 221 and the switch module 222 can be configured in the transmission cable 22 to achieve power failure protection.

[0165] In this embodiment, the second control module 221 and the switch module 222 can be housed within the wire of the transmission cable 22. Since the wire is typically a flexible structure, a protective shell can be provided on the wire to protect the second control module 221 and the switch module 222 from damage when the wire is bent. Housed within the wire, the second control module 221 is protected from influence by other electrical components in the transmission cable 22. Furthermore, the protective shell on the wire makes it easier for users to distinguish the transmission cable 22 with power-off protection from other data cables.

[0166] Alternatively, the second control module 221 and the switch module 222 can be housed within the electrical connector. This placement allows the second control module 221 to be closer to the second communication pin, effectively simplifying the internal wiring structure. Furthermore, since the electrical connector also includes other circuitry, this arrangement avoids the need for separate installation locations and structures for the second control module 221 and the switch module 222, simplifying the structure of the transmission cable 22.

[0167] In practical applications, depending on actual needs, one of the second control module 221 and the switch module 222 can be located in the electrical connector, and the other can be located in the wiring. For example, the second control module 221 can be located in the electrical connector, and the switch module 222 can be located in the wiring. Alternatively, the second control module 221 can be located in the wiring, and the switch module 222 can be located in the electrical connector.

[0168] Optionally, the charging component 2 is an adapter 21.

[0169] The second control module 221 and the switch module 222 are configured within the adapter 21.

[0170] To reduce carbon emissions and e-waste, vendors sometimes only include adapter 21 when selling equipment. Therefore, the second control module 221 and the switch module 222 can be configured in the adapter to achieve power failure protection.

[0171] Furthermore, since the circuit board inside the adapter 21 is relatively large, placing the second control module 221 and the switch module 222 inside the adapter 21 facilitates their arrangement. Understandably, to ensure wired communication between the second control module 221 and the first control module 11 within the adapter 21, a data transmission line configured with a communication line and a first communication pin is required.

[0172] Optionally, the charging component 2 is a transmission cable 22 and an adapter 21.

[0173] The second control module 221 and the switch module 222 are configured within the transmission cable 22; or,

[0174] The second control module 221 and the switch module 222 are configured within the adapter 21; or,

[0175] One of the second control module 221 and the switch module 222 is configured in the adapter 21, and the other is configured in the transmission cable 22.

[0176] When the charging component 2 charges the energy storage element in the nursing device body 1, if the charging voltage does not match the standard charging voltage specified by the energy storage element, or if the charging current does not match the standard charging current specified by the energy storage element, the service life of the energy storage element may be affected. To solve this problem, the charging component 2 may also include a transmission cable 22 and an adapter 21.

[0177] In practical applications, if the charging component 2 includes a transmission cable 22 and an adapter 21, the positions of the second control module 221 and the switch module 222 can be set according to actual needs.

[0178] Optionally, the second control module 221 may include a control unit and a first protection circuit.

[0179] The control unit can be an MCU; it can be connected to both the switch module and the first control module. The control unit can control the switching module 222 to turn on and off based on feedback signals sent by the first control module. The first protection circuit can protect the control unit from damage under conditions of overvoltage, overcurrent, surge, electromagnetic interference, etc. The specific structure of the first protection circuit is not specifically limited here.

[0180] By using a first protection circuit to protect the control unit, the normal operation of the control unit can be effectively ensured, and damage to the control unit can be avoided. For example, it can ensure that the control unit can receive the feedback signal sent by the first control module 11 and output the corresponding control signal, thereby further ensuring the safety of the nursing equipment during charging.

[0181] In order to facilitate the control of the switching module 222 to turn on and off, in the embodiments of this specification, the switching module 222 with a control terminal can be preferred.

[0182] Optionally, the switch module 222 may have an input terminal, an output terminal, and a control terminal; the input terminal is connected to one end of the power input line in the power supply circuit; the output terminal is connected to the other end of the power input line; and the control terminal is connected to the output pin of the second control module 221.

[0183] In this embodiment, the switch module 222 can be an electronic switch with an input terminal, an output terminal, and a control terminal. The input and output terminals of the switch module 222 can be connected in series in the power input line of the power supply circuit to control the on / off state of the power input line. The control terminal can control whether the input and output terminals of the switch module 222 are connected, thereby controlling the on / off state of the power input line. It can be understood that when the input and output terminals of the switch module 222 are connected, the power input line is connected, the power supply circuit is closed, and the nursing device body 1 can be charged; when the input and output terminals of the switch module 222 are not connected, the power input line is not connected, the power supply circuit is open, which is equivalent to disconnecting the charging power supply of the nursing device body 1, thereby stopping the charging of the nursing device body 1.

[0184] In practical applications, the control terminal of the switch module 222 can be connected to an output pin of the second control module 221. When the second control module 221 receives a feedback signal from the first control module 11 indicating the presence of a conductive foreign object in the electrical interface 12, the second control module 221 can control the output pin connected to the control terminal to output a low-level signal or a high-level signal, thereby controlling the input terminal and the output terminal to disconnect.

[0185] In this embodiment of the specification, after the second control module 221 controls the input and output terminals of the switch module 222 to disconnect via the control terminal, it can also output a control signal after a first time interval to control the input and output terminals to conduct, so that the charging component 2 can be used next time. If the first control module 11 determines that there are still conductive foreign objects in the electrical interface 12 next time, the second control module 221 can control the input and output terminals of the switch module 222 to disconnect again based on the feedback signal sent by the first control module 11. If the second control module 221 receives more than a preset value of feedback signals within a preset time interval, it indicates that the user has not cleaned the conductive foreign objects at the electrical interface 12, nor disconnected the electrical interface 12 and the electrical connector; it can control the input and output terminals of the switch module 222 to conduct via an output signal after a second time interval; the second time interval is longer than the first time interval.

[0186] In this embodiment of the specification, when the second control module 221 receives a feedback signal from the first control module 11 indicating the presence of a conductive foreign object in the electrical interface 12, it disconnects the power supply circuit for charging the nursing device body 1 through the switch module 222, thereby preventing a short circuit in the power supply circuit at the electrical interface 12 and fundamentally ensuring the charging safety of the nursing device body 1.

[0187] Optionally, the switching module 222 can be a MOSFET; the source of the MOSFET can be connected to one end of the power input line; the drain of the MOSFET can be connected to the other end of the power input line; and the gate of the MOSFET can be connected to the output pin of the second control module 221.

[0188] In the embodiments described in this specification, the source (S) of the MOSFET can be used as the input terminal, the drain (D) as the output terminal, and the gate (G) as the control terminal. The source (S) and drain (D) of the MOSFET can be connected in series in the power input line. The MOSFET's conduction can be controlled by controlling its gate (G).

[0189] Understandably, when the MOSFET is an NMOS transistor, the output pin of the second control module 221 connected to the control terminal of the MOSFET can control the MOSFET to turn off by outputting a low-level signal; when the MOSFET is a PMOS transistor, the output pin of the second control module 221 connected to the control terminal of the MOSFET can control the MOSFET to turn off by outputting a high-level signal.

[0190] In practical applications, the switch module 222 can also be other electronic switches capable of automatic control, such as bipolar junction transistors, field-effect transistors, and miniature relays.

[0191] Figure 4 is a schematic diagram of the overall structure of a detection and protection system provided in an embodiment of this specification. The detection and protection system can be applied to nursing equipment. As shown in Figure 4, the detection and protection system includes the following parts:

[0192] 1. Switch module; 2. Electrical interface; 3. Detection module; 4. First control module; 5. Second control module; 6. Information prompt component; 7. Second protection circuit.

[0193] The detection and protection principle is as follows:

[0194] The switch module is connected in series with the power input line VIN in the power supply circuit. The power input line VIN provides power to the nursing device body through the electrical interface. The detection module can acquire the electrical signal of the electrical interface and send the electrical signal to the first control module through wired or wireless communication. The first control module can determine whether there is a conductive foreign object in the electrical interface based on the electrical signal. If there is, it may cause a short circuit in the power input line VIN at the electrical interface. Therefore, it can send a feedback signal to the second control module so that the second control module can control the switch module to disconnect after receiving the feedback signal, thereby creating an open circuit in the power input line VIN. At the same time as sending the feedback signal to the second control module, the first control module can also send a protection command to the second protection circuit to activate the second protection circuit, thereby using the second protection circuit to further protect the short circuit at the electrical interface. At the same time, the first control module can also send a prompt signal to the information prompt component so that the prompt component can issue a prompt message to the user.

[0195] Figure 5 is a schematic diagram of the electrical structure of a detection and protection system provided in an embodiment of this specification. The second control module and the switch module are disposed in the transmission cable.

[0196] As shown in Figure 5, the second control module includes a first protection circuit and a control unit. The first protection circuit protects the control unit from damage under conditions such as overvoltage, overcurrent, surge, and electromagnetic interference. The control unit is connected to the gate of the first MOSFET, and the source and drain of the first MOSFET are connected in series in the power input line VIN. The control unit can control whether the first MOSFET is turned on through the gate of the first MOSFET, thereby controlling whether the power input line VIN is turned on.

[0197] The sensing circuit in the detection module is connected to the detection pin (PIN in Figure 5) and GND pin in the electrical interface. The sensing circuit also includes a current source to provide voltage to the sensing circuit, thereby detecting the electrical signal in the electrical interface and determining whether there is water at the electrical interface based on the electrical signal.

[0198] The detection module is communicatively connected to the first control module and sends the electrical signals detected from the electrical interface to the first control module. The first control module is connected to the second control module, the second protection circuit, and the information prompting component, and sends signals or commands to the second control module, the second protection circuit, and the information prompting component based on the electrical signals sent by the detection module.

[0199] The source of the second MOSFET in the second protection circuit is connected to the power input line VIN in the power supply circuit, and the drain is connected to the ground line GND in the power supply circuit.

[0200] Under normal circumstances, when the adapter is input, the VIN pin voltage in the electrical interface is 5V, and the detection pin PIN is low. If the electrical connector is inserted in a humid environment, the presence of water in the electrical interface may cause a short circuit in the power supply circuit at the electrical interface.

[0201] If liquid is present at position 1 (VIN and PIN), it may cause a short circuit between the detection pin PIN and the VIN pin, resulting in an increase in voltage on the detection pin PIN. The voltage sampling circuit in the detection module can be connected to the detection pin PIN and acquire the first voltage signal of the detection pin PIN. The detection module can send the first voltage signal to the first control module. If the first control module determines that the voltage value at the detection pin PIN reaches a preset voltage threshold based on the first voltage signal, it can determine that water is present at position 1 and that the electrical interface is damp.

[0202] If there is no liquid at position 1, the first control module can activate the current source in the sensing circuit of the detection module. The current source outputs a detection current. Since the sensing circuit and the detection pin PIN and GND pin form a return circuit, the detection current can pass through the conductive loop formed by the liquid between the detection pin PIN and GND pin. Because there is water at position 2, the impedance between the detection pin PIN and GND pin in the diagram becomes lower. The voltage sampling circuit can obtain the voltage value between the detection pin PIN and GND pin. The detection module can send the voltage value and the current value from the current source to the first control module. If the resistance between the detection pin PIN and GND pin, determined by the first control module based on the voltage and current values, is less than a preset resistance threshold, it can be determined that there is liquid at position 2, and the electrical interface is wet.

[0203] If the electrical interface is determined to be damp, the first control module can send a feedback signal to the second control module. To ensure the stability and speed of the feedback signal transmission, it can be sent to the control unit in the second control module via wired communication. Upon receiving the feedback signal, the control unit can output a high-level or low-level signal to disconnect the source and drain of the first MOSFET, thereby controlling the power input line VIN in the power supply circuit to disconnect, fundamentally cutting off the charging power to the device. On the other hand, the first control module can also send a protection command to the second protection circuit to turn on the second MOSFET in the second protection circuit and connect the second protection circuit in parallel with the short-circuited circuit at the electrical interface. Since the internal resistance of the second MOSFET is in the milliohm range when turned on, which is much smaller than the impedance of the short-circuit loop inside the electrical interface, it can protect the short-circuited circuit at the electrical interface. Simultaneously, the first control module can also send a warning signal to the information prompt component, so that the information prompt component can issue a warning message to remind the user that the electrical interface is damp.

[0204] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0205] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A care device, characterized in that The nursing device includes: the nursing device body and a charging component; The nursing device body includes: an electrical interface and a first control module; the electrical interface is configured as an electrical connection port for charging the nursing device body; The charging component includes: a second control module and a switch module; the switch module is connected in series with the power supply circuit in the charging component; The second control module is communicatively connected to the first control module; The first control module is configured to send a feedback signal to the second control module if a conductive foreign object is present in the electrical interface; the second control module is configured to control the switch module to disconnect after receiving the feedback signal.

2. The care device according to claim 1, characterized in that At least one pin of the electrical interface is configured as a first communication pin; the first control module is connected to the first communication pin. The charging assembly also includes a transmission cable with an electrical connector; at least one pin of the electrical connector is configured as a second communication pin; the second control module is connected to the second communication pin; The electrical interface is coupled to the electrical connector, the first communication pin and the second communication pin are connected to form an electrical circuit, and the second control module is communicatively connected to the first control module.

3. The care device according to claim 2, characterized in that The electrical interface is configured to have two first communication pins, which are located on opposite sides of the electrical interface, and / or, The electrical connector is configured to have two second communication pins, which are located on opposite sides of the electrical connector.

4. The care apparatus according to claim 1, characterized in that The charging component is a transmission cable; the second control module and the switch module are configured in the transmission cable.

5. The care device according to claim 4, characterized in that The transmission cable includes wire and electrical connectors; The second control module and the switch module are configured in the wire; or, The second control module and the switch module are configured in the electrical connector; or, One of the second control module and the switch module is configured in the electrical connector, and the other is configured in the wire.

6. The care apparatus according to claim 1, characterized in that The charging component is an adapter; The second control module and the switch module are configured within the adapter.

7. The care apparatus according to claim 1, characterized in that The charging components are a transmission cable and an adapter; The second control module and the switch module are configured within the transmission cable; or, The second control module and the switch module are configured within the adapter; or, One of the second control module and the switch module is configured in the adapter, and the other is configured in the transmission cable.

8. The care apparatus according to claim 1, characterized in that The second control module includes a control unit and a first protection circuit.

9. The care apparatus of claim 1, wherein, The switching module has an input terminal, an output terminal, and a control terminal; the input terminal is connected to one end of the power input line in the power supply circuit; the output terminal is connected to the other end of the power input line; and the control terminal is connected to the output pin of the second control module.

10. The care device according to claim 9, characterized in that The switching module is a MOSFET; the source of the MOSFET is connected to one end of the power input line; the drain of the MOSFET is connected to the other end of the power input line; and the gate of the MOSFET is connected to the output pin of the second control module.

11. The care device of claim 1, wherein, The nursing device also includes a nursing component comprising bristles, a nozzle, a bristle carrier, and a brush handle, the brush handle being configured to have a liquid flow channel.

12. The care device according to claim 11, characterized in that The nursing device also includes a drive assembly, which includes a pump assembly and / or a motor assembly coupled to the nursing assembly.

13. The care apparatus of claim 1, wherein, The nursing device body also includes a detection module, which is communicatively connected to the first control module; the detection module is configured to send a first electrical signal to the first control module; the first electrical signal is used to reflect the potential at the first pin in the electrical interface. The first control module is also configured to send the feedback signal to the second control module based on the first electrical signal.

14. The care device according to claim 13, characterized in that The detection module includes a first voltage acquisition circuit; the first voltage acquisition circuit is configured to detect the potential signal at the first pin. The first control module is specifically configured to send the feedback signal to the second control module if the potential reflected by the potential signal exceeds a preset potential threshold.

15. The care device according to claim 13, characterized in that The detection module is further configured to send a second electrical signal to the first control module; the second electrical signal is used to reflect the resistance value between the first pin and the second pin. The first control module is also configured to send the feedback signal to the second control module according to the second electrical signal.

16. The care device of claim 14, wherein, The detection module also includes a sensing circuit and a second voltage acquisition circuit. The sensing circuit forms a return circuit with at least the first pin and the second pin; the return circuit includes a current source; the current source is turned on by the first control module when the potential is less than a preset potential threshold. The second voltage acquisition circuit is configured to detect the voltage value between the first pin and the second pin; the second electrical signal includes the voltage value and the current value; the current value is the value of the current output by the current source in the return circuit; The first control module is specifically configured as follows: The resistance value between the first pin and the second pin is determined based on the voltage value and the current value; If the resistance value is less than a preset resistance threshold, the feedback signal is sent to the second control module.

17. The care apparatus in accordance with claim 1, characterized in that The nursing device body also includes a second protection circuit; the second protection circuit has an electronic switch, the input terminal of which is connected to the power input line in the power supply circuit, and the output terminal of which is connected to the ground line in the power supply circuit; the control terminal of which is connected to the output pin of the first control module. The first control module is configured to send a protection command to the second protection circuit if it is determined that there is a conductive foreign object in the electrical interface; the protection command is used to control the electronic switch in the second protection circuit to turn on.

18. The care apparatus in accordance with claim 1, characterized in that The nursing device body also includes an information prompting component connected to the first control module; The first control module is further configured to send a prompt signal to the information prompting component if a conductive foreign object is present in the electrical interface; the information prompting component is used to issue a prompt message to the user that a conductive foreign object is present in the electrical interface.

19. An energizing assembly, characterized by The charging component includes a switching module and a second control module; The switching module is connected in series with the power supply circuit of the charging component; The second control module is configured to control the switch module to disconnect if it receives a feedback signal from the first control module; the first control module is a module that is communicatively connected to the second control module; the first control module is configured to send the feedback signal to the second control module if there is a conductive foreign object in the electrical interface of the device being charged by the charging component; the electrical interface is configured as the electrical connection port of the device.

20. The power pack of claim 19, wherein, The charging assembly includes a transmission cable with an electrical connector; At least one pin of the electrical interface is configured as a first communication pin; the first control module is connected to the first communication pin. At least one pin of the electrical connector is configured as a second communication pin; the second control module is connected to the second communication pin. The electrical interface is coupled to the electrical connector, the first communication pin and the second communication pin are connected to form an electrical circuit, and the second control module is communicatively connected to the first control module.

21. The power pack of claim 19, wherein, The charging component is a transmission cable; the second control module and the switch module are configured in the transmission cable.

22. The power pack of claim 21, wherein, The transmission cable includes wire and electrical connectors; The second control module and the switch module are configured in the wire; or, The second control module and the switch module are configured in the electrical connector; or, One of the second control module and the switch module is configured in the electrical connector, and the other is configured in the wire.

23. The power pack of claim 19, wherein, The charging component is an adapter; The second control module and the switch module are configured within the adapter.

24. The power pack of claim 19, wherein, The charging components are a transmission cable and an adapter; The second control module and the switch module are configured within the transmission cable; or, The second control module and the switch module are configured within the adapter; or, One of the second control module and the switch module is configured in the adapter, and the other is configured in the transmission cable.

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