Nursing equipment and energy charging assembly

Abstract

The embodiment of the invention discloses nursing equipment and an energy charging assembly, and a switch module is connected in series in a power supply circuit at the end of the energy charging assembly, so that the on-off of the power supply circuit for charging a nursing equipment body is controlled through the switch module. And if the first control module at the nursing equipment body determines that the conductive foreign matter exists at the electrical interface, a feedback signal is sent to the second control module. The second control module controls the switch module to be disconnected after receiving the feedback signal, so that the power supply circuit is disconnected, and the power supply circuit for charging the nursing equipment body is further disconnected. The power supply of the nursing equipment body is disconnected from the energy charging assembly end, power-off protection is formed, short circuit of the power supply circuit at the electrical interface is avoided, and the charging safety of the equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of nursing appliances, and in particular to a nursing device and a charging component. Background Art

[0002] Electric toothbrushes, shavers and other care equipment will inevitably come into contact with water during use. Improper use by users may cause water to seep into the electrical interface. In addition, electric toothbrushes, shavers and other care equipment are usually placed in the bathroom, where the humidity is high, which may also cause humid gas to seep into the electrical interface. This may cause an internal short circuit in the electrical interface when the device is charging. Continuous charging may also cause the electrical interface to melt, and even cause a fire hazard.

[0003] To address the above-mentioned problems, no safer solution has been proposed yet. Summary of the invention

[0004] The embodiments of this specification provide a nursing device and a charging component to solve the charging safety problem of existing nursing devices.

[0005] To solve the above technical problems, the embodiments of this specification are implemented as follows: A nursing device, comprising: a nursing device body and a charging component; The nursing device body comprises: an electrical interface and a first control module; the electrical interface is configured as an electrical connection port for charging the nursing unit 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 with the first control module; The first control module is configured to send a feedback signal to the second control module if there is a conductive foreign object in the electrical interface; the second control module is configured to control the switch module to disconnect after receiving the feedback signal.

[0006] A charging component, the charging component comprising a switch module and a second control module; The switch 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 a feedback signal from the first control module is received; 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 charged by the charging component; the electrical interface is configured as the electrical connection port of the device.

[0007] At least one embodiment in this specification can achieve the following beneficial effects: by connecting the switch module in series in the power supply circuit at the charging component end, the switch module is used to control the on and off of the power supply circuit for powering or charging 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, a feedback signal is sent to the second control module. After receiving the feedback signal, the second control module controls the switch module to disconnect, thereby opening the power supply circuit and disconnecting the power supply circuit for charging the nursing device body. The power supply of the nursing device body is disconnected from the charging component end to form a power-off protection, thereby preventing the power supply circuit from short-circuiting at the electrical interface and improving the safety of device charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0009] Figure 1 It is a structural schematic diagram of a nursing device provided in an embodiment of this specification; Figure 2 It is a schematic diagram of an electrical interface provided in an embodiment of this specification; Figure 3 It is a schematic diagram of an electrical connector provided in an embodiment of this specification; Figure 4 It is a schematic diagram of the overall structure of a detection and protection system provided in an embodiment of this specification; Figure 5 It is a schematic diagram of the electrical structure of a detection and protection system provided in an embodiment of this specification.

[0010] Reference numerals: 1. Nursing device 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 DESCRIPTION

[0011] In order to make the purpose, 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 combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of one or more embodiments of this specification.

[0012] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0013] Figure 1 Schematic diagram of a nursing device provided in the embodiment of this specification. Figure 1 As shown, a nursing device provided in the present application may include a nursing device body 1 and a charging component 2.

[0014] 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 unit body.

[0015] 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 .

[0016] The second control module 221 is in communication connection with the first control module 11 .

[0017] The first control module 11 may 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 may be configured to control the switch module 222 to disconnect after receiving the feedback signal.

[0018] In the embodiments of the present specification, the care device body 1 may be an electric shaver, an electric hair clipper, an electric facial cleanser, an electric toothbrush, or the like; the charging component 2 may be a device for charging the above-mentioned care device body 1 .

[0019] The first control module 11 and the second control module 221 may 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 may be the same or different, which is not specifically limited here.

[0020] In practical applications, the first control module 11 and the second control module 221 can perform wireless communication. Specifically, the first control module 11 and the second control module 221 with wireless communication function can be selected to realize the wireless communication function; the wireless communication function can also be realized by configuring wireless communication units for the first control module 11 and the second control module 221 respectively.

[0021] The first control module 11 and the second control module 221 may also communicate via wire.

[0022] In the embodiment of this specification, the electrical interface 12 may be an interface provided at the nursing device body 1 for providing electrical energy 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; it may also be used to directly provide electrical energy to the nursing device body 1. In the embodiment of this specification, charging the nursing unit body may be charging the energy storage element configured in the nursing device body 1; it may also be used to directly provide electrical energy 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 matter may be a conductive liquid, a conductive solid, etc.

[0023] Specifically, a power supply circuit may be provided in the charging component 2. It is understandable that after the charging component 2 is connected to a power source, if the power supply circuit is turned on, the nursing device body 1 can be charged; if the power supply circuit is disconnected, the charging of the nursing device body 1 can be stopped. During charging, if there is a conductive foreign object in the electrical interface 12, the power supply circuit may be short-circuited at the electrical interface 12, which may cause damage to the electrical interface 12 or damage to the nursing device body 1, and may even cause a fire in severe cases. Therefore, if a conductive foreign object is detected in the electrical interface 12 during the charging process, certain protective measures need to be taken.

[0024] In the embodiment of this specification, the switch module 222 is connected in series in the power supply circuit of the charging component 2, and the switch module 222 can be used to control whether the power supply circuit is turned on. Specifically, when the second control module 221 receives the feedback signal sent by the first control module 11 reflecting the presence of a conductive foreign body in the electrical interface 12, the switch module 222 can be controlled to be disconnected, so that the power supply circuit is broken, that is, the power supply for charging the nursing device body is disconnected. The power supply for charging the nursing device body 1 is disconnected from the end of the charging component 2 to form a power-off protection, thereby avoiding a short circuit in the power supply circuit at the electrical interface 12, thereby improving the safety of charging the nursing device.

[0025] In actual applications, since wireless communication is easily interfered by electromagnetic waves and other external factors, the signal transmission speed and stability may be affected, and the communication reliability is poor; in order to ensure that the second control module 221 can receive the feedback signal sent by the first control module 11 to ensure the safety of charging of the nursing equipment, the embodiments of this specification may give priority to wired communication.

[0026] Specifically, at least one pin of the electrical interface 12 is configured as a first communication pin; and the first control module 11 is connected to the first communication pin.

[0027] The charging assembly 2 also includes a transmission cable 22 having an electrical connector; at least one pin of the electrical connector is configured as a second communication pin; and the second control module 221 is connected to the second communication pin.

[0028] The electrical interface 12 is coupled to the electrical connector, the first communication pin is connected to the second communication pin to form an electrical loop, and the second control module 221 is communicatively connected to the first control module 11 .

[0029] Figure 2 This is a schematic diagram of an electrical interface provided in the embodiments of this specification. Figure 2 As shown, the electrical interface 12 may be provided with a plurality of pins.

[0030] Figure 3 This is a schematic diagram of an electrical connector provided in the embodiments of this specification. Figure 3 As shown, a plurality of pins may also be provided in the electrical connector.

[0031] When the electrical interface 12 is coupled to the electrical connector, a plurality of pins in the electrical interface 12 may be correspondingly connected to a plurality of pins in the electrical connector, thereby performing energy transfer or signal transfer.

[0032] In the embodiment of 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, so that a complete communication link can be formed, so that the first control module 11 can communicate with the second control module 221. The first communication pin can be connected to the data transmission pin or signal output pin of the first control module 11, which can be selected according to actual conditions and is not specifically limited here. The second communication pin can be connected to the data reception pin or signal input pin of the second control module 221; which can be selected according to actual conditions and is not specifically limited here.

[0033] In practical applications, the TX pin in the electrical interface 12 can be used as the first communication pin, and correspondingly, the TX pin at the corresponding position of the electrical connector can be used as the second communication pin; of course, the RX pin in the electrical interface 12 can also be used as the first communication pin, and correspondingly, the RX pin at the corresponding position of the electrical connector can be used as the second communication pin.

[0034] As an implementation method, the two TX pins obliquely symmetrically arranged in the electrical interface 12 can be used as the first communication pins, and correspondingly, the two TX pins obliquely symmetrically arranged in the corresponding position of the electrical connector can be used as the second communication pins. Of course, the two RX pins obliquely symmetrically arranged in the electrical interface 12 can also be used as the first communication pins, and correspondingly, the two RX pins obliquely symmetrically arranged in the corresponding position of the electrical connector can be used as the second communication pins. In this way, the electrical interface 12 and the electrical connector can communicate regardless of whether they are inserted forward or backward.

[0035] In the embodiments of the present specification, the electrical connector and the electrical interface 12 are directly used to realize the wired communication between the first control module 11 and the second control module 221. There is no need to select a control module with a communication function, nor is there any need to configure an additional wireless communication unit, thereby saving resources and costs; at the same time, the success rate of the second control module 221 receiving the feedback signal sent by the first control module 11 is improved, thereby improving the charging safety of the nursing equipment.

[0036] Optionally, the electrical interface 12 may be configured to have two first communication pins, and the two first communication pins may be located at opposite sides of the electrical interface 12, respectively, and / or, The electrical connector may be configured to have two second communication pins, and the two second communication pins may be located at opposite sides of the electrical connector, respectively.

[0037] The electrical interface 12 may include two first communication pins, and the two first communication pins may be arranged diagonally, such as Figure 2 The two first communication pins may be connected to the data transmission pin of the first control module 11. Of course, the electrical interface 12 may also be provided with only one first communication pin.

[0038] The electrical connector may also include two second communication pins, and the two second communication pins may be arranged diagonally, such as Figure 3 The two second communication pins can be connected to the data receiving pin of the second control module 221. Of course, only one second communication pin can be set in the electrical connector.

[0039] In the embodiments of the present specification, two communication pins are arranged in at least one of the electrical interface 12 and the electrical connector, and the two communication pins are arranged diagonally, so that when the electrical connector is connected to the electrical interface 12, there is no need to identify the positive and reverse directions, thereby improving the convenience 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 direction of the electrical connector connected to the electrical interface 12 is incorrect, thereby improving the charging safety of the nursing equipment.

[0040] In actual applications, when merchants sell devices, the charging component 2 provided may only be a transmission cable 22.

[0041] 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 .

[0042] The transmission cable 22 may be a data cable having charging and data or signal transmission functions.

[0043] Optionally, the transmission cable 22 may include wires and electrical connectors.

[0044] The second control module 221 and the switch module 222 are configured in the wire; or, The second control module 221 and the switch module 222 are configured in the electrical connector; or, 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.

[0045] In practical applications, the transmission cable 22 may generally include wires and electrical connectors; in the embodiment of the present specification, the second control module 221 and the switch module 222 may be disposed in the wire of the transmission cable 22. Since the wire is generally a flexible structure, in order to avoid damaging the second control module 221 and the switch module 222 when the wire is bent, a protective shell for protecting the second control module 221 and the switch module 222 may also be disposed on the wire. The second control module 221 and the switch module 222 are disposed in the wire to avoid the influence of other electrical components in the transmission cable 22 on the second control module 221. At the same time, since a protective shell is disposed on the wire, it is also convenient for users to distinguish the transmission cable 22 with a power-off protection function from other data cables.

[0046] In addition, the second control module 221 and the switch module 222 can also be set in the electrical connector. By setting the second control module 221 and the switch module 222 in the electrical connector, the distance between the second control module 221 and the second communication pin can be closer, thereby effectively simplifying the internal circuit structure. And because the electrical connector also includes other circuit structures, setting the second control module 221 and the switch module 222 in the electrical connector avoids setting a separate installation position and structure for the second control module 221 and the switch module 222, thereby simplifying the structure of the transmission cable 22.

[0047] In practical applications, according to actual needs, one of the second control module 221 and the switch module 222 can be set in the electrical connector, and the other can be set in the wire. For example, the second control module 221 can be set in the electrical connector, and the switch module 222 can be set in the wire. The second control module 221 can also be set in the wire, and the switch module 222 can be set in the electrical connector.

[0048] Optionally, the charging component 2 may also be only the adapter 21 ; the second control module 221 and the switch module 222 may be configured in the adapter 21 .

[0049] Since the circuit board in the adapter 21 is relatively large, the second control module 221 and the switch module 222 are arranged in the adapter 21, which can facilitate the arrangement of the second control module 221 and the switch module 222. It can be understood that in order to ensure that the second control module 221 in the adapter 21 can communicate with the first control module 11 by wire, it is necessary to use a data transmission line equipped with a communication line and a first communication pin.

[0050] In actual applications, when the energy storage element in the nursing device body 1 is charged using the charging component 2, if the charging voltage does not match the standard charging voltage specified for the energy storage element; or the charging current does not match the standard charging current specified for the energy storage element, although charging can be performed, it may affect the service life of the energy storage element.

[0051] Based on this, optionally, the charging component 2 can be a transmission cable 22 and an adapter 21.

[0052] The second control module 221 and the switch module 222 are configured in the transmission cable 22; or, The second control module 221 and the switch module 222 are configured in the adapter 21; or, 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 .

[0053] In the embodiment of this specification, the energy storage element is charged using the adapter 21 and the transmission cable 22 that are matched with the nursing equipment, which can ensure that the charging voltage matches the standard charging voltage of the energy storage component; at the same time, it can also ensure that the charging current matches the standard charging current of the energy storage component, thereby extending the service life of the energy storage element.

[0054] In practical applications, if the charging assembly 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.

[0055] If the second control module 221 and the switch module 222 are configured in the transmission cable 22 , it can also be determined whether the second control module 221 and the switch module 222 are located in the wire or in the charging connector according to actual needs.

[0056] Optionally, the second control module 221 may include a control unit and a first protection circuit.

[0057] The control unit may be an MCU, and the control unit may be connected to the switch module and the first control module. The control unit may control the on and off of the switch module 222 according to the feedback signal sent by the first control module.

[0058] The first protection circuit can be used to protect the control unit from being damaged in the event of overvoltage, overcurrent, surge, electromagnetic interference, etc. The specific structure of the first protection circuit is not specifically limited here.

[0059] Using the first protection circuit to protect the control unit can effectively ensure that the control unit can work normally and avoid damage to the control unit. For example, it can ensure that the control unit can receive the feedback signal sent by the first control module 11 and output a corresponding control signal, thereby further ensuring the safety of the nursing device when charging.

[0060] In order to facilitate the control of the on and off of the switch module 222, in the embodiment of this specification, a switch module 222 with a control end can be preferably selected.

[0061] Optionally, the switch module 222 may have an input end, an output end and a control end; the input end may be connected to one end of the power input line in the power supply circuit; the output end may be connected to the other end of the power input line; and the control end may be connected to the output pin of the second control module 221.

[0062] In the embodiment of the present specification, the switch module 222 can be an electronic switch having an input end, an output end and a control end. The input end and the output end 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 of the power input line. The control end can control whether the input end and the output end of the switch module 222 are turned on, thereby controlling the on-off of the power input line. It can be understood that when the input end and the output end of the switch module 222 are turned on, the power input line is turned on, the power supply circuit is a passage, and the nursing device body 1 can be charged; when the input end and the output end of the switch module 222 are not turned on, the power input line is not turned on, and 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.

[0063] In actual applications, the control end 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 sent by the first control module 11 indicating that there is a conductive foreign object in the electrical interface 12, the second control module 221 can control the output pin connected to the control end to output a low-level signal or a high-level signal, thereby controlling the input end and the output end to be disconnected.

[0064] In the embodiment of the present specification, after the second control module 221 controls the input and output ends of the switch module 222 to be disconnected through the control end, it can also output a control signal to control the input and output ends to be turned on after an interval of the first time period; so that the charging component 2 can be used the next time it is used. If the first control module 11 determines that there is still a conductive foreign object in the electrical interface 12 during the next use, the second control module 221 can control the input and output ends of the switch module 222 to be disconnected again according to the feedback signal sent by the first control module 11. If the number of times the second control module 221 receives the feedback signal within the preset time period is greater than the preset value, it can indicate that the user has not cleaned the conductive foreign object at the electrical interface 12, nor has the electrical interface 12 and the electrical connector been disconnected; the input and output ends of the switch module 222 can be turned on by the output signal after an interval of the second time period; the second time period is greater than the first time period.

[0065] In the embodiment of the present specification, when the second control module 221 receives a feedback signal sent by the first control module 11 indicating that there is a conductive foreign object at the electrical interface 12, the power supply circuit for charging the nursing device body 1 is disconnected through the switch module 222, thereby avoiding a short circuit in the power supply circuit at the electrical interface 12, thereby fundamentally ensuring the charging safety of the nursing device body 1.

[0066] Optionally, the switch module 222 can be a MOS tube; the source of the MOS tube can be connected to one end of the power input line; the drain of the MOS tube can be connected to the other end of the power input line; the gate of the MOS tube can be connected to the output pin of the second control module 221.

[0067] In the embodiments of this specification, the source S of the MOS tube can be used as an input terminal, the drain D of the MOS tube can be used as an output terminal, and the gate G of the MOS tube can be used as a control terminal. The source S and drain D of the MOS tube can be connected in series in the power input line. By controlling the gate G of the MOS tube, whether the MOS tube is turned on can be controlled.

[0068] It can be understood that when the MOS tube is an NMOS tube, the output pin connected to the gate G of the MOS tube in the second control module 221 can control the MOS tube to be disconnected by outputting a low-level signal; when the MOS tube is a PMOS tube, the output pin connected to the gate G of the MOS tube in the second control module 221 can control the MOS tube to be disconnected by outputting a high-level signal.

[0069] In practical applications, the switch module 222 may also be other electronic switches capable of automatic control, such as bipolar junction transistors, field effect transistors, micro relays, etc.

[0070] Optionally, the care device may further include a care component, which may include bristles, a nozzle, a bristle carrier and a brush handle, and the brush handle is constructed to have a liquid flow channel.

[0071] In the embodiments of this specification, the care device may be an electric shaver, an electric hair clipper, an electric facial cleanser, an electric tooth cleaner, or a composite oral care device having the functions of brushing and flushing. The care component may include a brush wire for brushing and a nozzle for flushing.

[0072] The nozzle can be integrally formed with the brush wire carrier, or can be separately mounted on the brush wire carrier, or can be separately mounted on the brush handle. The nozzle can be partially or completely surrounded by the brush wire, or can be relatively independent of the brush wire area.

[0073] In the embodiment of the present specification, the liquid flow channel may be a channel disposed inside the brush handle for the flushing fluid to pass through. The flushing fluid may reach the nozzle through the liquid flow channel and be ejected from the nozzle.

[0074] In order to achieve the effects of brushing and flushing teeth, the care device may also generally include a driving component.

[0075] Optionally, the nursing device may further include a driving component, which may include a pump component and / or a motor component coupled to the nursing component.

[0076] In the embodiments of the present 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 may drive the brush wires in the care assembly to reciprocate and vibrate or rotate through the motor shaft.

[0077] The pump assembly may be a power assembly that pumps the flushing fluid to the nozzle. Specifically, the motor shaft may be a hollow shaft; one end of the hollow portion of the motor shaft may be connected to the output end of the pump assembly, and the other end may be connected to the liquid flow path of the brush handle. Under the power of the pump assembly, the flushing fluid may enter the hollow portion of the motor shaft, pass through the liquid flow path at the brush handle, and reach the nozzle, and provide a jet to the user's oral cavity, thereby achieving oral cleaning.

[0078] In practical applications, the composite oral care device with the functions of brushing teeth and flushing teeth can be used separately or together. A button for the user to select an oral cleaning mode can also be provided on the care device body 1.

[0079] The present embodiment also provides specific contents of detecting whether there is a conductive foreign object in the electrical interface 12 .

[0080] 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 electrical potential at the first pin in the electrical interface 12.

[0081] The first control module 11 may also be configured to send the feedback signal to the second control module 221 according to the first electrical signal.

[0082] In practical applications, the detection module 13 can communicate with the first control module 11 through serial communication. Specifically, the first control module 11 can communicate with the second control module 221 through one or more communication methods including SPI, IIC, RS232, and RS485.

[0083] In the embodiment of this specification, the first pin may be any one of the electrical interface 12 except the power input pin; specifically, the first pin may be a pin close to the power input pin VBUS, for example, the first pin may be the SBU1 pin, such as Figure 2 or Figure 3 shown.

[0084] Since the electrical interface 12 is small in size, in a usage environment such as a bathroom, the entire electrical interface 12 or most of the electrical interface 12 is easily covered by water, thereby causing 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 matter in the electrical interface 12 can be detected by detecting the potential of the first pin.

[0085] In the embodiments of this specification, specific contents of detecting the electric potential at the first pin are also provided.

[0086] Optionally, the detection module 13 may include a first voltage acquisition circuit; the first voltage acquisition circuit may be configured to detect a potential signal at the first pin.

[0087] The first control module 11 may be specifically 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.

[0088] The first voltage acquisition circuit can be an ADC voltage sampling circuit, and 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 according to the potential signal. If the potential at the first pin exceeds the 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 according to 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.

[0089] In the embodiment 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.

[0090] Optionally, the detection module 13 may also be configured to send a second electrical signal to the first control module 11; the second electrical signal may be used to reflect the resistance value between the first pin and the second pin.

[0091] The first control module 11 may also be configured to send the feedback signal to the second control module 221 according to the second electrical signal.

[0092] The second pin and the first pin may be arranged adjacent to each other or spaced apart; for example, the second pin may be a ground pin (GND pin).

[0093] In the embodiments of this specification, specific contents of obtaining the second electrical signal and sending the feedback signal according to the second electrical signal are also provided.

[0094] Optionally, the detection module 13 may further include a sensing circuit and a second voltage acquisition circuit.

[0095] The sensing circuit at least forms a return circuit with the first pin and the second pin; the return circuit may include a current source; the current source can be controlled to be turned on by the first control module 11 when the potential is less than a preset potential threshold.

[0096] The second voltage acquisition circuit can be configured to detect a voltage value between the first pin and the second pin; the second electrical signal includes the voltage value and a current value; the current value is the value of the current output by the current source in the return circuit.

[0097] The first control module 11 may be specifically configured as follows: The resistance value between the first pin and the second pin is determined according to the voltage value and the current value.

[0098] If the resistance value is less than the preset resistance threshold, the feedback signal is sent to the second control module 221 .

[0099] In the embodiment of this specification, the sensing circuit is connected to the first pin and the second pin to form a return circuit. In order to provide voltage to the return circuit, a current source may also be provided in the return circuit. In the embodiment of this specification, the current value output by the current source may be customized according to actual needs within the safety range of the circuit. Specifically, the current value may be set to 1uA, 10uA, 100uA, 1mA, etc.

[0100] The second voltage acquisition circuit may be an ADC voltage sampling circuit; the second voltage acquisition circuit and the first voltage acquisition circuit may be the same; or another voltage sampling circuit may be provided. The second voltage acquisition circuit may detect the voltage value between the first pin and the second pin.

[0101] In practical applications, if the potential of the first pin does not exceed the preset potential threshold, the first control module 11 may control the current source in the return circuit to turn on, so as to power on the return circuit.

[0102] When there is a conductive foreign object between the first pin and the second pin, the first pin and the second pin will be short-circuited, thereby reducing the resistance between the first pin and the second pin. Therefore, it can be determined whether there is a conductive foreign object between the first pin and the second pin based on the resistance between the first pin and the second pin.

[0103] Specifically, the second electrical signal may include a voltage value between the first pin and the second pin detected by the second voltage acquisition circuit, and a current value output by the current source; the first control module 11 may calculate the resistance between the first pin and the second pin based on the above voltage value and current value. In another embodiment, the second electrical signal may include a resistance value calculated by the sensing circuit based on the current value and the voltage value, that is, the sensing circuit may directly calculate the resistance value, avoiding the first control module 11 from calculating again after obtaining the current value and voltage value fed back by the sensing circuit.

[0104] If the resistance value determined by the first control module 11 is less than the preset resistance threshold, it may indicate that there is a conductive foreign object between the first pin and the second pin, thereby causing the resistance between the first pin and the second pin to decrease; therefore, the first control module 11 may send a feedback signal to the second control module 221 so that the second control module 221 disconnects the power supply circuit for charging the nursing device body 1.

[0105] If the resistance value is greater than or equal to the preset resistance threshold, it can be indicated that the resistance between the first pin and the second pin is normal, so that it can be determined that there is no conductive foreign matter between the first pin and the second pin; therefore, there is no need to send a feedback signal to the second control module 221.

[0106] In addition, when the current output by the current source is a fixed current, the second electrical signal may also only include the voltage value between the first pin and the second pin detected by the second voltage acquisition circuit; since the current value remains unchanged, if the voltage value between the first pin and the second pin is less than the preset value, it may also indicate that there is a conductive foreign object between the first pin and the second.

[0107] In the embodiments of the present specification, since the user may also use other charging components 2 to charge the nursing device body 1; in order to avoid the presence of conductive foreign matter in the electrical interface 12 during charging, which may cause damage to the electrical interface 12 or damage to the nursing device body 1, a protection circuit may also be provided at the nursing device body 1 to further protect the charging safety of the nursing device body 1.

[0108] 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 end of the electronic switch may be connected to the power input line in the power supply circuit, and the output end of the electronic switch may be connected to the ground line in the power supply circuit; the control end of the electronic switch may be connected to the output pin of the first control module 11.

[0109] The first control module 11 may be configured to send a protection instruction to the second protection circuit 14 if it is determined that there is a conductive foreign object in the electrical interface 12 ; the protection instruction is used to control the electronic switch in the second protection circuit 14 to be turned on.

[0110] In the embodiment of this specification, the electronic switch in the second protection circuit 14 can be an electronic switch with a relatively small internal resistance when turned on. For example, the electronic switch can be a MOS tube, and the internal resistance of the MOS tube is in the milliohm level when turned on.

[0111] In actual application, the nursing device body 1 is charged by using the charging component 2 without power-off protection. If there is a conductive foreign object in the electrical interface 12, the power supply circuit will be short-circuited at the electrical interface 12. In the embodiment of this specification, the input end 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 end 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 because the internal resistance of the electronic switch in the second protection circuit 14 is at the milliohm level when turned on, which is much smaller than the impedance of the short-circuit loop inside the electrical interface 12; therefore, most of the current output by the power supply circuit can be shunted by the second protection circuit 14; thereby, continuous heating of the short-circuit loop in the electrical interface 12 can be avoided, and the hot melting of the electrical interface 12 can be avoided.

[0112] If there is a conductive foreign object in the electrical interface 12 , a prompt message may be sent to the user in order to facilitate prompting the user so that the user is aware and can take certain measures.

[0113] Optionally, the nursing device body 1 also includes an information prompt component connected to the first control module 11 .

[0114] The first control module 11 is also configured to send a prompt signal to the information prompt component if there is a conductive foreign object in the electrical interface 12; the information prompt component is used to send prompt information, and the prompt information is used to prompt the user that there is a conductive foreign object in the electrical interface 12.

[0115] The information prompt component may 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 may be a signal for controlling the display screen to display text prompt information. If the prompt component is an indicator light, the prompt signal may be a signal for controlling the indicator light to light up in a preset color or flash at a preset frequency.

[0116] The information prompt component may also be a voice prompt component; if the prompt component is a voice prompt component, the prompt signal may be a signal for controlling the voice prompt component to output voice prompt information.

[0117] The information prompt component may also be a motor; if the prompt component is a motor, the prompt signal may be a signal that controls the vibration of the motor.

[0118] As an optional implementation, the embodiments of this specification also provide a charging component for solving the charging safety problem of existing nursing equipment.

[0119] The charging component 2 may include a switch module 222 and a second control module 221 .

[0120] The switch module 222 is connected in series with the power supply circuit of the charging component 2 .

[0121] The second control module 221 is configured to control the switch module 222 to disconnect if a feedback signal from the first control module 11 is received; 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 charged by the charging component 2; the electrical interface 12 is configured as the electrical connection port of the device.

[0122] In the embodiment of this specification, the charging component 2 can charge the device through the electrical interface 12. The device can be a device with an electrical interface 12; for example, the device can be an electronic product such as an electric shaver, an electric hair clipper, an electric facial cleanser, an electric tooth cleaner, a mobile phone, and headphones.

[0123] The electrical interface 12 can be a Type-C interface, a lighting interface, or a trapezoidal Micro USB interface.

[0124] The first control module 11 and the second control module 221 may be 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 may be the same or different. The first control module 11 and the second control module 221 may communicate with each other by wire or by wireless.

[0125] The first control module 11 may be a control module disposed at the device end; 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 may send a feedback signal to the second control module 221 .

[0126] In practical applications, the detection module 13 in the device can be used to collect the electrical signal in the electrical interface 12, and the first control module 11 can determine whether there is a conductive foreign object in the electrical interface 12 based on the electrical signal collected by the detection module 13. The relevant contents of the detection module 13 and the principle of the first control module 11 determining whether there is a conductive foreign object in the electrical interface 12 have been described in detail above and will not be repeated here.

[0127] In the embodiment of the present specification, the switch module 222 and the second control module 221 are arranged in the charging component 2, and the switch module 222 is connected in series in the power supply circuit of the charging component 2, so that the switch module 222 can be used to control whether the power supply circuit is turned on. When the second control module 221 receives a feedback signal reflecting the presence of a conductive foreign body in the electrical interface 12, the switch module 222 can be controlled to be disconnected, so that the power supply circuit is open, that is, the power supply for charging the nursing device body is disconnected. The power supply for charging the nursing device body 1 is disconnected from the end of the charging component 2 to form a power-off protection, thereby avoiding a short circuit in the power supply circuit at the electrical interface 12, thereby improving the charging safety of the device.

[0128] In practical applications, since wireless communication is easily interfered by electromagnetic waves and other external factors, the signal transmission speed and stability may be affected, and the communication reliability is poor; in order to ensure security, the embodiments of this specification may give priority to wired communication.

[0129] Optionally, the charging assembly 2 includes a transmission cable 22 having an electrical connector.

[0130] 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.

[0131] 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.

[0132] The electrical interface 12 is coupled to the electrical connector, the first communication pin is connected to the second communication pin to form an electrical loop, and the second control module 221 is communicatively connected to the first control module 11 .

[0133] like Figure 2 As shown, the electrical interface 12 may be provided with a plurality of pins.

[0134] like Figure 3 As shown, a plurality of pins may also be provided in the electrical connector; when the electrical interface 12 is coupled with the electrical connector, the plurality of pins in the electrical interface 12 may be correspondingly connected with the plurality of pins in the electrical connector, thereby performing energy transfer or signal transfer.

[0135] In the embodiment of 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, so that a complete communication link can be formed, so that the first control module 11 can communicate with the second control module 221. The first communication pin can be connected to the data transmission pin or signal output pin of the first control module 11, which can be selected according to actual conditions and is not specifically limited here. The second communication pin can be connected to the data reception pin or signal input pin of the second control module 221; which can be selected according to actual conditions and is not specifically limited here.

[0136] In practical applications, the TX pin in the electrical interface 12 can be used as the first communication pin, and correspondingly, the TX pin at the corresponding position of the electrical connector can be used as the second communication pin; of course, the RX pin in the electrical interface 12 can also be used as the first communication pin, and correspondingly, the RX pin at the corresponding position of the electrical connector can be used as the second communication pin.

[0137] As an implementation method, the two TX pins obliquely symmetrically arranged in the electrical interface 12 can be used as the first communication pins, and correspondingly, the two TX pins obliquely symmetrically arranged in the corresponding position of the electrical connector can be used as the second communication pins. Of course, the two RX pins obliquely symmetrically arranged in the electrical interface 12 can also be used as the first communication pins, and correspondingly, the two RX pins obliquely symmetrically arranged in the corresponding position of the electrical connector can be used as the second communication pins. In this way, the electrical interface 12 and the electrical connector can communicate regardless of whether they are inserted forward or backward.

[0138] In the embodiments of the present specification, the electrical connector and the electrical interface 12 are directly used to realize the wired communication between the first control module 11 and the second control module 221. There is no need to select a control module with a communication function, nor is there any need to configure an additional wireless communication unit, thereby saving resources and costs; at the same time, the success rate of the second control module 221 receiving the feedback signal sent by the first control module 11 is improved, thereby improving the charging safety of the nursing equipment.

[0139] 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 .

[0140] Optionally, the transmission cable 22 may include wires and electrical connectors.

[0141] The second control module 221 and the switch module 222 are configured in the wire; or, The second control module 221 and the switch module 222 are configured in the electrical connector; or, 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.

[0142] The transmission cable 22 may be a data cable having charging and data signal transmission functions.

[0143] In order to reduce carbon emissions and electronic waste, merchants sometimes only configure the transmission cable 22 when selling devices. Therefore, the second control module 221 and the switch module 222 can be configured in the transmission cable 22 to achieve power-off protection.

[0144] In the embodiment of the present specification, the second control module 221 and the switch module 222 can be set in the wire of the transmission cable 22. Since the wire is usually a flexible structure, in order to avoid damaging the second control module 221 and the switch module 222 when the wire is bent, a protective shell for protecting the second control module 221 and the switch module 222 can be set on the wire. The second control module 221 and the switch module 222 are set in the wire, which can avoid the influence of other electrical components in the transmission cable 22 on the second control module 221. At the same time, since the protective shell is set on the wire, it is also convenient for users to distinguish the transmission cable 22 with power-off protection function from other data cables.

[0145] In addition, the second control module 221 and the switch module 222 can also be set in the electrical connector. By setting the second control module 221 and the switch module 222 in the electrical connector, the distance between the second control module 221 and the second communication pin can be closer, thereby effectively simplifying the internal circuit structure. And because the electrical connector also includes other circuit structures, setting the second control module 221 and the switch module 222 in the electrical connector avoids setting a separate installation position and structure for the second control module 221 and the switch module 222, thereby simplifying the structure of the transmission cable 22.

[0146] In practical applications, according to actual needs, one of the second control module 221 and the switch module 222 can be set in the electrical connector, and the other can be set in the wire. For example, the second control module 221 can be set in the electrical connector, and the switch module 222 can be set in the wire. The second control module 221 can also be set in the wire, and the switch module 222 can be set in the electrical connector.

[0147] Optionally, the charging component 2 is an adapter 21.

[0148] The second control module 221 and the switch module 222 are configured in the adapter 21 .

[0149] In order to reduce carbon emissions and electronic waste, merchants sometimes only configure the adapter 21 when selling devices. Therefore, the second control module 221 and the switch module 222 can be configured in the adapter to achieve power-off protection.

[0150] And because the circuit board in the adapter 21 is relatively large, the second control module 221 and the switch module 222 are arranged in the adapter 21, which can facilitate the arrangement of the second control module 221 and the switch module 222. It can be understood that in order to ensure that the second control module 221 in the adapter 21 can communicate with the first control module 11 by wire, it is necessary to use a data transmission line equipped with a communication line and a first communication pin.

[0151] Optionally, the charging component 2 is a transmission cable 22 and an adapter 21 .

[0152] The second control module 221 and the switch module 222 are configured in the transmission cable 22; or, The second control module 221 and the switch module 222 are configured in the adapter 21; or, 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 .

[0153] When the energy storage element in the nursing device body 1 is charged by the charging component 2, if the charging voltage does not match the standard charging voltage specified for the energy storage element; or the charging current does not match the standard charging current specified for the energy storage element, the service life of the energy storage element may be affected; in order to solve this situation, the charging component 2 can also include a transmission cable 22 and an adapter 21 at the same time.

[0154] In practical applications, if the charging assembly 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.

[0155] Optionally, the second control module 221 may include a control unit and a first protection circuit.

[0156] The control unit may be an MCU; the control unit may be connected to the switch module and the first control module. The control unit may control the on and off of the switch module 222 according to the feedback signal sent by the first control module. The first protection circuit may be used to protect the control unit from being damaged in the event of overvoltage, overcurrent, surge, electromagnetic interference, etc. The specific structure of the first protection circuit is not specifically limited here.

[0157] Using the first protection circuit to protect the control unit can effectively ensure that the control unit can work normally and avoid damage to the control unit. For example, it can ensure that the control unit can receive the feedback signal sent by the first control module 11 and output a corresponding control signal, thereby further ensuring the safety of the nursing device when charging.

[0158] In order to facilitate the control of the on and off of the switch module 222, in the embodiment of this specification, a switch module 222 with a control end can be preferably selected.

[0159] Optionally, the switch module 222 may have an input end, an output end and a control end; the input end is connected to one end of the power input line in the power supply circuit; the output end is connected to the other end of the power input line; and the control end is connected to the output pin of the second control module 221.

[0160] In the embodiment of the present specification, the switch module 222 can be an electronic switch having an input end, an output end and a control end. The input end and the output end 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 of the power input line. The control end can control whether the input end and the output end of the switch module 222 are turned on, thereby controlling the on-off of the power input line. It can be understood that when the input end and the output end of the switch module 222 are turned on, the power input line is turned on, the power supply circuit is a passage, and the nursing device body 1 can be charged; when the input end and the output end of the switch module 222 are not turned on, the power input line is not turned on, and 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.

[0161] In actual applications, the control end 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 sent by the first control module 11 indicating that there is a conductive foreign object in the electrical interface 12, the second control module 221 can control the output pin connected to the control end to output a low-level signal or a high-level signal, thereby controlling the input end and the output end to be disconnected.

[0162] In the embodiment of the present specification, after the second control module 221 controls the input and output ends of the switch module 222 to be disconnected through the control end, it can also output a control signal to control the input and output ends to be turned on after an interval of the first time period; so that the charging component 2 can be used the next time it is used. If the first control module 11 determines that there is still a conductive foreign object in the electrical interface 12 during the next use, the second control module 221 can control the input and output ends of the switch module 222 to be disconnected again according to the feedback signal sent by the first control module 11. If the number of times the second control module 221 receives the feedback signal within the preset time period is greater than the preset value, it can indicate that the user has not cleaned the conductive foreign object at the electrical interface 12, nor has the electrical interface 12 and the electrical connector been disconnected; the input and output ends of the switch module 222 can be turned on by the output signal after an interval of the second time period; the second time period is greater than the first time period.

[0163] In the embodiment of the present specification, when the second control module 221 receives a feedback signal sent by the first control module 11 indicating that there is a conductive foreign object at the electrical interface 12, the power supply circuit for charging the nursing device body 1 is disconnected through the switch module 222, thereby avoiding a short circuit in the power supply circuit at the electrical interface 12, thereby fundamentally ensuring the charging safety of the nursing device body 1.

[0164] Optionally, the switch module 222 can be a MOS tube; the source of the MOS tube can be connected to one end of the power input line; the drain of the MOS tube can be connected to the other end of the power input line; the gate of the MOS tube can be connected to the output pin of the second control module 221.

[0165] In the embodiments of this specification, the source S of the MOS tube can be used as an input terminal, the drain D of the MOS tube can be used as an output terminal, and the gate G of the MOS tube can be used as a control terminal. The source S and drain D of the MOS tube can be connected in series in the power input line. By controlling the gate G of the MOS tube, whether the MOS tube is turned on can be controlled.

[0166] It can be understood that when the MOS tube is an NMOS tube, the output pin connected to the control end of the MOS tube in the second control module 221 can control the MOS tube to be disconnected by outputting a low-level signal; when the MOS tube is a PMOS tube, the output pin connected to the control end of the MOS tube in the second control module 221 can control the MOS tube to be disconnected by outputting a high-level signal.

[0167] In practical applications, the switch module 222 may also be other electronic switches capable of automatic control, such as bipolar junction transistors, field effect transistors, micro relays, etc.

[0168] Figure 4This 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. Figure 4 The detection and protection system includes the following parts: 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.

[0169] The detection and protection principles are as follows: The switch module is connected in series in the power input line VIN in the power supply circuit, and the power input line VIN can provide electrical energy to the nursing device body through the electrical interface; the detection module can obtain the electrical signal of the electrical interface, and send the electrical signal to the first control module through wired communication or wireless communication; the first control module can determine whether there is a conductive foreign body in the electrical interface according to the electrical signal; if it exists, it may cause the power input line VIN to short-circuit at the electrical interface, so a feedback signal can be sent to the second control module, so that the second control module can control the switch module to disconnect after receiving the feedback signal, thereby causing the power input line VIN to be open-circuited; while the first control module sends a feedback signal to the second control module, it can also send a protection instruction to the second protection circuit to turn on the second protection circuit, so that the second protection circuit is further protected against the short-circuit circuit at the electrical interface by using the second protection circuit; at the same time, the first control module can also send a prompt signal to the information prompt component, so that the prompt component sends a prompt message, thereby prompting the user.

[0170] Figure 5 This 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 arranged in the transmission cable.

[0171] like Figure 5 As shown: the second control module includes a first protection circuit and a control unit, and the first protection circuit can be used to protect the control unit from being damaged in the case of overvoltage, overcurrent, surge, electromagnetic interference, etc. The control unit is connected to the gate of the first MOS tube, and the source and drain of the first MOS tube are connected in series in the power input line VIN; the control unit can control whether the first MOS tube is turned on through the gate of the first MOS tube, thereby controlling whether the power input line VIN is turned on.

[0172] The sensing circuit in the detection module and the detection pin in the electrical interface ( Figure 5 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 then determining whether there is water at the electrical interface based on the electrical signal.

[0173] The detection module is connected to the first control module for communication, and sends the electrical signal obtained from the electrical interface detection to the first control module. The first control module is connected to the second control module, the second protection circuit, and the information prompt component, and sends a signal or instruction to the second control module, the second protection circuit, and the information prompt component according to the electrical signal sent by the detection module.

[0174] The source of the second MOS transistor 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.

[0175] Under normal circumstances, when the adapter is input, the voltage of the VIN pin in the electrical interface is 5V, and the detection pin PIN is a low voltage. If the electrical interface is inserted into the electrical connector in a relatively humid environment, the power supply circuit may be short-circuited at the electrical interface due to the presence of water in the electrical interface.

[0176] If there is liquid at position 1 (VIN and PIN), it may cause the detection pin PIN to be short-circuited with the VIN pin, causing the voltage on the detection pin PIN to increase. The voltage sampling circuit in the detection module can be connected to the detection pin PIN and obtain 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 the preset voltage threshold based on the first voltage signal, it can be determined that there is water at position 1 and that the electrical interface is wet.

[0177] If there is no liquid at position 1, the first control module can control the current source in the sensing circuit in the detection module to start; the current source outputs the detection current, and since the sensing circuit and the detection pin PIN and the 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 the GND pin; since there is water at position 2, the impedance between the detection pin PIN and the GND pin in the figure becomes lower; the voltage sampling circuit can obtain the voltage value between the detection pin PIN and the GND pin; the detection module can send the voltage value and the current value of the current source to the first control module. If the resistance between the detection pin PIN and the GND pin determined by the first control module based on the voltage value and the current value is less than the preset resistance threshold, it can be determined that there is liquid at position 2 and the electrical interface is wet.

[0178] If it is determined that the electrical interface is wet, the first control module can send a feedback signal to the second control module on the one hand; in order to ensure the stability and transmission speed of the feedback signal transmission, the feedback signal can be sent to the control unit in the second control module through wired communication. After receiving the feedback signal, the control unit can output a high-level signal or a low-level signal to control the source and drain of the first MOS tube to be disconnected, thereby controlling the power input line VIN in the power supply circuit to be disconnected, and fundamentally cutting off the charging power supply of the device. On the other hand, the first control module can also send a protection instruction to the second protection circuit to turn on the second MOS tube 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 MOS tube 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, it can play a protective role for the short-circuit 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 information prompt component sends a prompt message to remind the user that the electrical interface is wet.

[0179] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0180] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A nursing device, characterized in that: The nursing device comprises: a nursing device body and a charging component; The nursing device body comprises: an electrical interface and a first control module; the electrical interface is configured as an electrical connection port for charging the nursing unit 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 with the first control module; The first control module is configured to send a feedback signal to the second control module if there is a conductive foreign object in the electrical interface; the second control module is configured to control the switch module to disconnect after receiving the feedback signal.

2. The nursing 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 further includes a transmission cable having 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 is connected to the second communication pin to form an electrical circuit, and the second control module is communicatively connected to the first control module.

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

4. The nursing device 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 nursing device according to claim 4, characterized in that: The transmission cable includes wires 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 nursing device according to claim 1, characterized in that: The charging component is an adapter; The second control module and the switch module are configured in the adapter.

7. The nursing device according to claim 1, characterized in that: The charging components are transmission cables and adapters; The second control module and the switch module are configured in the transmission cable; or, The second control module and the switch module are configured in 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 nursing device according to claim 1, characterized in that: The second control module includes a control unit and a first protection circuit.

9. The nursing device according to claim 1, characterized in that: The switch module has an input end, an output end and a control end; the input end is connected to one end of the power input line in the power supply circuit; the output end is connected to the other end of the power input line; and the control end is connected to the output pin of the second control module.

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

11. The nursing device according to claim 1, characterized in that: The care device further comprises a care component, wherein the care component comprises brush filaments, a nozzle, a brush filament carrier and a brush handle, wherein the brush handle is configured to have a liquid flow channel.

12. The nursing device according to claim 11, characterized in that The care device further comprises a driving component, wherein the driving component comprises a pump component and / or a motor component coupled to the care component.

13. The nursing device according to claim 1, characterized in that: The nursing device body further 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 further configured to send the feedback signal to the second control module according to the first electrical signal.

14. The nursing device according to claim 13, characterized in that The detection module comprises 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 nursing 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 further configured to send the feedback signal to the second control module according to the second electrical signal.

16. The nursing device according to claim 14, characterized in that The detection module also includes a sensing circuit and a second voltage acquisition circuit; The sensing circuit at least forms a return circuit with the first pin and the second pin; the return circuit includes a current source; the current source is controlled to be 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 a 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: Determine a resistance value between the first pin and the second pin according to the voltage value and the current value; If the resistance value is less than the preset resistance threshold, the feedback signal is sent to the second control module.

17. The nursing device according to 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 end of the electronic switch is connected to the power input line in the power supply circuit, and the output end of the electronic switch is connected to the ground line in the power supply circuit; the control end of the electronic switch is connected to the output pin of the first control module; The first control module is configured to send a protection instruction to the second protection circuit if it is determined that there is a conductive foreign object at the electrical interface; the protection instruction is used to control the conduction of an electronic switch in the second protection circuit.

18. The nursing device according to claim 1, characterized in that The nursing device body also includes an information prompt component connected to the first control module; The first control module is also configured to send a prompt signal to the information prompt component if there is a conductive foreign object in the electrical interface; the information prompt component is used to send prompt information, and the prompt information is used to prompt the user that there is a conductive foreign object in the electrical interface.

19. A charging component, characterized in that: The charging assembly includes a switch module and a second control module; The switch 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 a feedback signal from the first control module is received; 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 charged by the charging component; the electrical interface is configured as the electrical connection port of the device.

20. The charging assembly according to claim 19, characterized in that: The charging assembly includes a transmission cable having 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 is connected to the second communication pin to form an electrical circuit, and the second control module is communicatively connected to the first control module.

21. The charging assembly according to claim 19, characterized in that: The charging component is a transmission cable; the second control module and the switch module are configured in the transmission cable.

22. The charging assembly according to claim 21, characterized in that: The transmission cable includes wires 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 charging assembly according to claim 19, characterized in that: The charging component is an adapter; The second control module and the switch module are configured in the adapter.

24. The charging assembly according to claim 19, characterized in that: The charging components are transmission cables and adapters; The second control module and the switch module are configured in the transmission cable; or, The second control module and the switch module are configured in 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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