Drying device and power supply module

Abstract

A drying device (01) comprises a heat radiation source (100) for performing heat radiation to transfer heat to a dried object; an air supply unit (200) for generating air flow in a working state to transfer air flow to the dried object; and a main control unit (300) for controlling the working state of the air supply unit (200) and the heat radiation source (100), and controlling the drying device (01) to stop operating when an abnormality is detected in the drying device (01). A power supply module (400) of the drying device (01).

Description

Technical Field

[0001] The present application relates to drying technology, and in particular to a drying device and a power supply module. Background Art

[0002] Traditional drying devices, such as hair dryers, usually use heated airflow to heat the hair or the water around the hair to dry the hair. The principle is roughly that the resistance wire inside the hair dryer is energized to generate heat, and then the motor inside the hair dryer drives the fan blades to generate air flow. The flowing air is heated when it blows through the heating resistance wire, thereby forming a heated airflow. However, this drying method consumes a lot of energy and is extremely inefficient. Most of the heat is used to heat the surrounding air. Therefore, a more low-energy and high-efficiency drying device is urgently needed to change the current situation. Summary of the invention

[0003] In view of this, embodiments of the present application provide an improved drying device and power supply module.

[0004] In a first aspect, an embodiment of the present application provides a drying device, comprising:

[0005] A heat radiation source, used for heat radiation to transfer heat to the object to be dried;

[0006] An air supply unit, used for generating air flow in a working state to deliver the air flow to the object to be dried;

[0007] The main control unit is used to control the working states of the air supply unit and the heat radiation source, and to control the drying device to stop running when an abnormality is detected in the drying device.

[0008] In a second aspect, an embodiment of the present application provides a power supply module of a drying device, wherein the drying device comprises a main control unit, and the main control unit is used to control the operation of the drying device and to exchange data with the power supply module;

[0009] The power supply module includes a discharge unit connected to the drying device and a power supply management unit connected to the discharge unit;

[0010] The power supply management unit is used to control the discharge unit to discharge to the drying device, and to exchange communication data with the main control unit, and to control the discharge unit to stop discharging when it is determined according to the communication data that the main control unit is abnormal.

[0011] In a third aspect, an embodiment of the present application provides a drying device, comprising:

[0012] A thermal radiation source, used for thermal radiation;

[0013] An air supply unit, used for generating and delivering air flow in a working state;

[0014] A main control unit, used to control the working states of the air supply unit and the heat radiation source, and to communicate data with the power supply module;

[0015] The power supply module is used to supply power to the heat radiation source and the air supply unit, and to exchange communication data with the main control unit, and to stop supplying power to the heat radiation source and the air supply unit when it is determined that the main control unit is abnormal based on the communication data.

[0016] The drying device provided in the embodiment of the present application directly transmits heat to the object to be dried through the heat radiation source, thereby avoiding the unnecessary energy loss caused by heating the air and improving the energy utilization rate. At the same time, since the heat radiation source directly transmits heat to the object to be dried, it does not need to heat the air, and the power consumption required for operation is also greatly reduced. At the same time, the air supply unit is assisted to generate airflow and transport it to the object to be dried, which can avoid the object to be dried receiving the heat of the heat radiation source and causing the temperature to be too high, and when the airflow passes through the object to be dried, it can also accelerate the evaporation of water in the object to be dried. Therefore, the cooperation of the heat radiation source and the air supply unit can effectively improve the drying efficiency. Furthermore, in order to ensure the safety of the drying device during operation, the main control unit is also used to control the working state of the air supply unit and the heat radiation source, and when an abnormality of the drying device is detected, for example, when an abnormality is detected in the air supply unit or the heat radiation source, the drying device is controlled to stop running, providing a safety protection mechanism for the operation of the drying device and ensuring the safe operation of the drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a structural schematic diagram of a drying device shown in an exemplary embodiment of the present application.

[0019] Figure 2 It is a schematic structural diagram of a thermal radiation source shown in an exemplary embodiment of the present application.

[0020] Figure 3 It is a cross-sectional view of a drying device shown in an exemplary embodiment of the present application.

[0021] Figure 4 It is a cross-sectional view of another drying device shown in an exemplary embodiment of the present application.

[0022] Figure 5 It is a structural schematic diagram of a drying device including a power supply module shown in an exemplary embodiment of the present application.

[0023] Figure 6 It is a structural schematic diagram of a power supply module shown in an exemplary embodiment of the present application.

[0024] Figure 7 It is a structural schematic diagram of a drying device including a power conversion unit shown in an exemplary embodiment of the present application.

[0025] Figure 8 It is a structural schematic diagram of a drying device including a motor drive unit shown in an exemplary embodiment of the present application.

[0026] Fig. 9 It is a structural schematic diagram of a specific drying device shown in an exemplary embodiment of the present application.

[0027] Fig.10 It is a structural schematic diagram of another drying device shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Based on the problem of high power consumption and low efficiency of the current drying device, the present application embodiment first provides an improved drying device, see Figure 1 , Figure 1 : is a structural schematic diagram of a drying device shown in an exemplary embodiment of the present application, and the drying device 01 includes:

[0030] The heat radiation source 100 is used for heat radiation to transfer heat to the object to be dried;

[0031] The air supply unit 200 is used to generate air flow in a working state to deliver the air flow to the object to be dried;

[0032] The main control unit 300 is used to control the working states of the air supply unit 200 and the heat radiation source 100, and to control the drying device to stop operating when an abnormality is detected in the drying device.

[0033] According to the drying device provided by the embodiment of the present application, the heat radiation source 100 directly transmits heat to the object to be dried, thereby avoiding the unnecessary energy loss caused by heating the air and improving the energy utilization rate. At the same time, since the heat radiation source 100 directly transmits heat to the object to be dried, it does not need to heat the air, and the power consumption required for operation is greatly reduced. At the same time, the air supply unit 200 generates wind flow and transports it to the object to be dried, thereby avoiding the object to be dried from receiving the heat of the heat radiation source and causing the temperature to be too high. When the wind flows through the object to be dried, it can also accelerate the evaporation of the moisture of the object to be dried. Therefore, the cooperation of the heat radiation source 100 and the air supply unit 200 can effectively improve the drying efficiency. Further, in order to ensure the safety of the drying device during operation, the main control unit 300 is used to control the working state of the air supply unit 200 and the heat radiation source 100, and when the drying device is abnormal, for example, when the air supply unit 200 or the heat radiation source 100 is abnormal, the drying device is controlled to stop running, providing a safety protection mechanism for the operation of the drying device and ensuring the safety of the drying device.

[0034] The drying device in the embodiment of the present application may be a hair dryer, a dryer, a hand dryer, a body dryer, or other drying equipment. As an example, the heat radiation source 100 may include a heat source (i.e., a radiation source) for transmitting heat by heat radiation, and a reflective lamp cup for directing the heat radiation emitted by the heat source in the same direction, but other implementation methods of the heat radiation source are not excluded. Figure 2 , Figure 2 It is a schematic diagram of the structure of a heat radiation source shown in an exemplary embodiment of the present application. The heat radiation source 100 includes a heat source 110 and a reflective lamp cup 120. The heat radiation in different directions emitted by the heat source 110 is directed to the same direction after passing through the reflective lamp cup, and shines on the object to be dried for heat transfer. It is worth noting that the heat source 110 can be an infrared radiation source, a black body radiation source, etc., and specifically can be a ceramic heating rod, a carbon fiber heating wire, a metal heating wire, etc., of course, there is no limitation to this. The reflective lamp cup 120 can include a concave surface, and the radiation direction is changed by the concave surface. In addition, the number of heat radiation sources 100 in the drying device can be one or more, and there is no limitation to this.

[0035] The air supply unit 200 may include a motor and fan blades mounted on the motor and driven to rotate by the motor. The fan blades generate airflow during rotation and convey the airflow to the object to be dried.

[0036] In addition, the drying device also includes an airflow channel for conveying wind flow, and the air supply unit can convey the generated wind flow through the airflow channel. In one embodiment, the heat radiation source 100 can be arranged in the airflow channel, or the heat radiation source 100 can also be arranged in a non-airflow channel area in the drying device, for example, it can be arranged around the airflow channel. In order to more vividly introduce the setting of the position of the heat radiation source in the drying device provided in the embodiment of the present application, two specific examples are used here for illustration. Figure 3 , Figure 3 1 is a cross-sectional view of a drying device shown in an exemplary embodiment of the present application, wherein the drying device 03 includes an infrared radiation source 10, an air duct 20, a fan blade 30, and a motor 40, wherein the infrared radiation source 10 includes a heat source 11. The motor 40 is connected to the fan blade 30, and the motor 40 drives the fan blade 30 to rotate to form a wind flow, and transports the wind flow through the air duct 20, wherein the infrared radiation source 10 is arranged in the air duct 20. Figure 4 , Figure 4 1 is a cross-sectional view of another drying device according to an exemplary embodiment of the present application, wherein the drying device 04 includes a plurality of infrared radiation sources 50, an air duct 60, a motor 70, and a fan blade 80, wherein the plurality of infrared radiation sources 50 are arranged around the air duct 60, and the surrounding infrared radiation sources 50 can constitute the outer wall of the air duct 60, that is, the infrared radiation sources 50 and the air duct 60 are integrated; of course, the air duct 60 can also have an independent outer wall. The radiation sources 50 are arranged around the air duct 60 to reduce the wind resistance and wind noise of the wind flow generated by the fan blade 80.

[0037] The main control unit 300 may be a chip with processing capability such as a microcontroller unit (MCU), a central processing unit (CPU), or a programmable logic device (PLD) integrated in the drying device. The chip may realize the corresponding function through a software program or through a hardware form such as a circuit. When the drying device is detected to be abnormal, for example, when the air supply unit 200 or the heat radiation source 100 is detected to be abnormal, the drying device is controlled to stop running. It should be noted that the control of the drying device to stop running mentioned here may refer to controlling the drying device to stop running completely, that is, the drying device is completely in a non-working state, for example, controlling the air supply unit 200 and the heat radiation source 100 to stop working; or controlling the drying device to stop running may also refer to controlling a specific functional module in the drying device to stop working, and other functional modules in the drying device may still be in a working state, for example, only controlling the air supply unit 200 or the heat radiation source 100 to stop working. The specific method of controlling the drying device to stop running can be set by the technician according to the needs, and is not limited to this.

[0038] The following describes how to detect whether an abnormality occurs in the air supply unit 200 and the thermal radiation source 100 in some examples. In one embodiment, it is possible to determine whether an abnormality occurs in the air supply unit 200 and the thermal radiation source 100 during operation by collecting the working current, working voltage and other values ​​of the air supply unit 200 and the working current, working voltage and other values ​​of the thermal radiation source 100. On this basis, the drying device may further include a sampling unit, through which data such as current and voltage are sampled, and the sampled values ​​are sent to the main control unit 300 for analysis to determine whether an abnormality exists. The sampling unit may be integrated inside the main control unit 300, or may be deployed outside the main control unit 300, for example, it may be electrically connected to the main control unit 300 to transmit sampled data to the main control unit 300. The specific setting of the sampling unit may be selected by the technician according to the needs, and is not limited to this. In addition, the sampling unit may specifically be an analog-to-digital converter (ADC).

[0039] Taking the collection of the working current of the air supply unit 200 as an example, how to detect whether the air supply unit 200 is abnormal is introduced. First, the main control unit 300 can pre-store the current data of the air supply unit 200 under normal operation, for example, the current value, the maximum current value, the minimum current value or the current range of the air supply unit 200 under normal operation can be pre-stored, which is used as the basis for judging whether the air supply unit 200 is working normally. Therefore, during the operation of the drying device, the sampling unit can collect the working current of the air supply unit 200 in real time, and send the sampled current value to the main control unit 300 after analog-to-digital conversion. After obtaining the current working current value of the air supply unit 200, the main control unit 300 can compare it with the pre-stored current data of the air supply unit 200 under normal operation to judge whether the current working current value is a normal current value, and then judge whether the air supply unit 200 is abnormal. For example, when it is found through comparison that the current working current value of the air supply unit 200 is not in the current range of the air supply unit 200 under normal operation, it can be determined that the air supply unit 200 is abnormal. Similarly, the method described above can be used to detect whether an abnormality occurs in the air supply unit 200 by collecting the working voltage of the air supply unit 200. The only difference is that the sampling value is voltage. Since the principle is similar to the above method, it will not be repeated here.

[0040] In the above method, the working current value or voltage value of the air supply unit 200 is sampled to detect whether the air supply unit 200 is abnormal. In addition, considering whether the air supply unit 200 is abnormal, it can also be reflected by the wind flow generated by the air supply unit 200. Therefore, the embodiment of the present application also provides another method for detecting whether the air supply unit 200 is abnormal. In one embodiment, the drying device may also include an air flow channel for conveying wind flow. The size, shape, etc. of the air flow channel may be set by a technician according to the actual structure of the drying device. The wind flow generated by the air supply unit 200 may be conveyed to the dried object through the air flow channel. On this basis, a heating element and a thermistor may be arranged in the air flow channel, and the position of the thermistor may be set to a position close to the heating element, and the heating element may transfer heat to the thermistor, wherein the position of the thermistor and the position of the heating element may be close to each other as long as it can ensure that a good thermal conductivity relationship is maintained between the heating element and the thermistor, and the specific close setting value is not limited. Among them, the thermistor used in the embodiment of the present application has a fixed corresponding relationship between its resistance value and its temperature, that is, the thermistor is fixed to a certain resistance value under different temperatures. Optionally, the heating element used in the embodiment of the present application may be a heating resistor, which will generate a temperature rise after power is turned on, and the thermistor used in the embodiment of the present application may be a thermistor, whose resistance changes with temperature.

[0041] In order to detect whether the air supply unit 200 has an abnormality based on the airflow generated by the air supply unit 200, the present application can pre-measure the corresponding temperature of the thermistor under different airflow speeds after the heating element is heated to a specified value at different ambient temperatures. In this way, the corresponding relationship between the temperature and wind speed of the thermistor can be obtained under a specific ambient temperature and when the same heating element conducts heat to the thermistor, and the corresponding relationship can be made into a table and stored in the main control unit 300. At the same time, the corresponding relationship between the resistance and temperature of the thermistor can also be pre-stored. Therefore, during the operation of the drying device, the sampling unit can sample the current and voltage of the thermistor in real time and send them to the main control unit 300 for analysis. The main control unit 300 can calculate the current resistance value of the thermistor based on the acquired current and voltage of the thermistor, and at the same time obtain the temperature value corresponding to the current resistance value of the thermistor by querying a pre-stored table, and query the wind speed corresponding to the current temperature value of the thermistor, thereby obtaining the real-time air flow speed delivered by the air supply unit 200. Based on the acquired real-time air flow speed delivered by the air supply unit 200, it can be determined whether the air supply unit 200 has an abnormality. For example, the real-time air flow speed delivered by the air supply unit 200 can be compared with the air flow speed delivered by the air supply unit 200 under normal working conditions to determine whether the current air flow speed delivered by the air supply unit 200 is normal, so as to determine whether the air supply unit 200 has an abnormality.

[0042] Several methods for detecting whether the air supply unit 200 is abnormal are shown above. It can be understood that the above is only an example and not a limitation. Other methods that may be used to detect the abnormality of the air supply unit 200 are not introduced one by one here. The main control unit 300 can determine whether to control the thermal radiation source 100 and the air supply unit 200 to stop working by determining whether the air supply unit 200 is abnormal. It should be noted that in the case of an abnormality in the air supply unit 200, the main control unit 300 can control the thermal radiation source 100 to stop running. Since the drying device provided in the embodiment of the present application uses the thermal radiation source 100 and the air supply unit 200 for drying at the same time, the role of wind is very important for safety. If the air flow is not transported to the dried object, on the one hand, the wind lacks the effect of promoting evaporation, and on the other hand, it is easy to cause the temperature of the dried object to continue to rise, and finally due to the heat dissipation speed of itself reaching a thermal equilibrium, it is stabilized at a higher temperature. For some dried objects, it may not be able to withstand higher temperatures and will be damaged. Therefore, in order to ensure safety, the main control unit 300 can control the thermal radiation source 100 to stop running when the air supply unit 200 is abnormal. Furthermore, in the event that an abnormality occurs in the air supply unit 200, in order to prevent the abnormality of the air supply unit 200 from continuing, the air supply unit 200 may be controlled to stop running.

[0043] The embodiment of the present application also provides a method for detecting whether an abnormality occurs in the thermal radiation source 100. Taking the collection of the working current of the thermal radiation source 100 as an example, how to detect whether an abnormality occurs in the thermal radiation source 100 is introduced. First, the main control unit 300 can pre-store the current data of the thermal radiation source 100 under normal operation, for example, the current value, the maximum current value, the minimum current value or the current range of the thermal radiation source 100 under normal operation can be pre-stored, which is used as a basis for judging whether the thermal radiation source 100 is working normally. Therefore, during the operation of the drying device, the sampling unit can collect the working current of the thermal radiation source 100 in real time, and send the sampled current value to the main control unit 300. After obtaining the current working current value of the thermal radiation source 100, the main control unit 300 can compare it with the pre-stored current data of the thermal radiation source 100 under normal operation to judge whether the current working current value is a normal current value, and then judge whether the thermal radiation source 100 is abnormal. For example, when it is found through comparison that the current working current value of the thermal radiation source 100 is not in the current range of the thermal radiation source 100 under normal operation, it can be determined that the thermal radiation source 100 is abnormal. Similarly, the operating voltage of the thermal radiation source 100 can be collected to detect whether the thermal radiation source 100 is abnormal. Since the principle is similar to the above method, it will not be repeated here. The main control unit 300 can determine whether to control the thermal radiation source 100 to stop working by determining whether the thermal radiation source 100 is abnormal.

[0044] The above embodiments of the present application realize that the main control unit 300 determines whether the heat radiation source 100 and the air supply unit 200 are abnormal, and determines whether to control the heat radiation source 100 and the air supply unit 200 to stop running to ensure the safe operation of the drying device. However, considering that the main control unit 300 may also be abnormal in some cases, more redundant control measures may be required to ensure the safe operation of the drying device. Based on this, the embodiments of the present application also provide a drying device including a power supply module, see Figure 5 , Figure 5 is a drying device including a power supply module shown in an exemplary embodiment of the present application, the drying device 05 and Figure 1 The difference of the drying device 01 shown is that it also includes a power supply module 400, which is connected to the thermal radiation source 100 and the air supply unit 200 respectively. The power supply module 400 can be used to supply power to the thermal radiation source 100 and the air supply unit 200. Specifically, the power supply module 400 can have a built-in battery cell, and supply power to the thermal radiation source 100 and the air supply unit 200 by discharging the battery. Of course, the power supply module 400 can also be an external power supply, and the thermal radiation source 100 and the air supply unit 200 are supplied with power by the external power supply. In addition, the power supply module 400 can provide direct current to the thermal radiation source 100 and the air supply unit 200, or it can provide alternating current, which can be set according to actual needs. In addition, the power supply module 400 can be detachably mounted on the drying device, and of course it can also be integrated with the drying device.

[0045] Further, the power supply module 400 can also be configured to exchange data with the main control unit 300. In one embodiment, the power supply module 400 and the main control unit 300 can communicate through a signal line. For example, when the power supply module 400 and the main control unit 300 are respectively deployed on different circuit boards, the power supply module 400 and the main control unit 300 can communicate through the inter-board signal line; when the power supply module 400 and the main control unit 300 are deployed on the same circuit board, the power supply module 400 and the main control unit 300 can communicate through the intra-board signal line. Among them, the communication interface protocol adopted can be I2C (Inter-Integrated Circuit), UART (Universal Asynchronous Receiver / Transmitter), etc. In another embodiment, the power supply module 400 and the main control unit 300 can be wirelessly communicating, for example, through Bluetooth, wireless local area network (WIFI), telecommunication network, mobile network, etc.

[0046] The communication data between the power supply module 400 and the main control unit 300 can be used to determine whether the main control unit 300 is working abnormally, so that whether the main control unit 300 is abnormal can be detected through the interactive communication between the power supply module 400 and the main control unit 300. Since the main control unit 300 may not be able to normally control the working status of the thermal radiation source 100 and the air supply unit 200 under abnormal circumstances, therefore, in one embodiment, if the power supply module 400 determines that the main control unit 300 is abnormal, it can stop supplying power to the thermal radiation source 100 and the air supply unit 200, so that the thermal radiation source 100 and the air supply unit 200 stop running to avoid safety hazards.

[0047] Considering that an abnormality in the power supply module 400 may cause power supply abnormalities and lead to safety hazards, such as the inability to cut off the power output, the inability to normally control the shutdown of the drying device, etc., the heat radiation source 100 and the air supply unit 200 may continue to work and cannot be stopped, the main control unit 300 can also interact with the power supply module 400 to communicate data to determine whether the power supply module 400 is working abnormally, and when the main control unit 300 determines that the power supply module 400 is abnormal, the heat radiation source 100 and the air supply unit 200 that are in operation are controlled to stop running.

[0048] The method of data exchange between the main control unit 300 and the power supply module 400 may be to send communication requests to each other, and determine whether an abnormality occurs according to the response result of the other party. For example, when the main control unit 300 sends a communication request to the power supply module 400, if the other party responds abnormally or does not respond, it can be determined that an abnormality occurs in the power supply module 400. Or the method of data exchange between the main control unit 300 and the power supply module 400 may also be through the method of periodic exchange of heartbeat packets, that is, the main control unit 300 and the power supply module 400 send heartbeat packets to each other according to a preset period, and determine whether an abnormality occurs according to whether the heartbeat packet sent by the other party can be received on time. If the heartbeat packet of the other party is not received after exceeding the period agreed by both parties, it can be determined that an abnormality occurs. For example, the main control unit 300 and the power supply module 400 agree on the period of the heartbeat packet. If the main control unit 300 has received a heartbeat packet sent by the power supply module 400, it has not received the next heartbeat packet after exceeding the agreed period time, it can be determined that an abnormality occurs in the power supply module 400. Of course, in addition to the two methods described above, it is not ruled out that the main control unit 300 and the power supply module 400 may actively send a message to each other indicating that an abnormality has occurred when an abnormality occurs in their own operation, so that the other party can take safety protection measures in time.

[0049] In some cases, when the main control unit 300 controls the thermal radiation source 100 and the air supply unit 200 to stop working, an operation failure may occur. At this time, the main control unit 300 can send an instruction to the power supply module 400 to notify the power supply module 400 to stop supplying power to the thermal radiation source 100 and the air supply unit 200, so as to avoid the thermal radiation source 100 and the air supply unit 200 failing to stop working in time. The main control unit 300 determines that the operation failure of controlling the thermal radiation source 100 and the air supply unit 200 to stop working can be, after sending a control signal to stop working to the thermal radiation source 100 and the air supply unit 200, by obtaining the sampled values ​​of the variables such as the current, voltage or temperature of the thermal radiation source 100 and the air supply unit 200 to determine whether the operation has failed. For example, after the main control unit 300 sends a control signal to stop working to the thermal radiation source 100, the sampling unit samples the current of the thermal radiation source 100 in real time, and the main control unit 300 determines whether the operation has failed based on the sampled current. Specifically, if the sampled current is not 0, it indicates that the thermal radiation source 100 is still in operation at this time, so it can be determined that the operation of controlling the thermal radiation source 100 to stop running has failed.

[0050] The structure of the power supply module 400 is briefly introduced below. Figure 6 , Figure 6 is a schematic diagram of a power supply module 400 shown in an exemplary embodiment of the present application. Figure 6 As shown, the power supply module 400 includes a discharge unit 410 and a power supply management unit 420. The power supply management unit 420 is used to exchange communication data with the main control unit 300, and determine whether the main control unit 300 is working abnormally according to the communication data, so as to control the discharge unit 410 to discharge / stop discharging. How to determine whether the main control unit 300 is working abnormally according to the communication data can refer to the introduction of the previous embodiment, which will not be repeated here.

[0051] In one embodiment, the main control unit 300 may generate an enable signal through a fixed enable pin to control the working status of the thermal radiation source 100 and the air supply unit 200, and the power supply management unit 420 may generate an enable signal through a fixed enable pin to control the discharge of the discharge unit 410. If the enable pin on the main control unit 300 used to control the thermal radiation source 100 or the air supply unit 200 is damaged, or the enable pin on the power supply management unit 420 used to control the discharge unit 410 is damaged, the main control unit 300 may lose the ability to control the thermal radiation source 100 and the air supply unit 200, and similarly, the power supply management unit 420 may also lose the ability to control the discharge unit 410. To avoid such situations, the power supply management unit 420 and the main control unit 300 can be set to generate enable signals through at least two enable pins according to the specified logic gate circuit, thereby preventing the power supply management unit 420 or the main control unit 300 from losing the corresponding control ability when a specific pin is damaged. For example, taking the enable signal generated by the main control unit 300 to control the working state of the thermal radiation source 100 as an example, the main control unit 300 can be configured to output '1' through three pins at the same time, and generate an enable signal '1' to control the operation of the thermal radiation source 100 through a three-way input AND gate. Therefore, if any pin fails and erroneously outputs '0', then the enable signal '1' required to control the operation of the thermal radiation source 100 cannot be generated through this three-way input AND gate.

[0052] exist Figure 6 On the basis of the power supply module 400 shown, further, the discharge unit 410 may also include a discharge drive unit and a battery cell, and the power supply management unit 420 may control the battery cell to discharge / stop discharging through the discharge drive unit. Of course, the discharge unit 410 may not be configured with a battery cell, and the discharge unit 410 may be directly connected to an external power supply through the discharge drive unit, and the power supply switch of the external power supply may be controlled through the discharge drive unit. The discharge drive unit may be a MOS (MOSFET) chip.

[0053] The power supply management unit 420 may also include a battery power management chip and a power supply manager, wherein the power supply manager is used to output a discharge enable signal to the battery power management chip so that the battery power management chip controls the discharge of the discharge unit 410. Of course, in the case where no battery cell is provided in the power supply module 400, the battery power management chip may not be configured in the power supply management unit 420. In this case, the power supply manager may directly output a discharge enable signal to the discharge unit 410 to control the discharge of the discharge unit 410. In addition, in the case where a battery cell is provided in the power supply module 400, the battery power management chip may not only control the discharge of the discharge unit 410 according to the discharge enable signal output by the power supply manager, but also monitor the battery power in real time and perform relevant management of the battery power.

[0054] In some cases, the power provided to the heat radiation source 100 and the air supply unit 200 needs to meet their working requirements to ensure normal operation. For example, it is necessary to provide a suitable voltage to the heat radiation source 100 and the air supply unit 200 to ensure normal operation, but the voltage provided by the power supply module 400 or the external power supply may not be directly applicable to the heat radiation source 100 and the air supply unit 200. Therefore, in one embodiment, the drying device may further include a power conversion unit, see Figure 7 , Figure 7 An exemplary embodiment of the present application shows a drying device including a power conversion unit, such as Figure 7 The drying device 06 shown in FIG. Figure 1The difference of the drying device 01 shown is that it also includes a power conversion unit 500. The thermal radiation source 100 and the air supply unit 200 can be connected to the power supply through the power conversion unit 500 respectively, so that the power conversion unit 500 can convert the input power to provide the air supply unit 200 with a first working power that meets the normal working requirements, and provide the thermal radiation source 100 with a second working power that meets the normal working requirements, wherein the power conversion unit 500 can be connected to the power supply module 400 to convert the power input to the power supply module 400. Of course, when the drying device is not equipped with the power supply module 400, it can also be directly connected to an external power supply. Further, considering that the working power required for the operation of the heat radiation source 100 and the air supply unit 200 may be inconsistent, different modules may be configured in the power conversion unit 500 to convert the input power into the first working power and the second working power, respectively. For example, the power conversion unit 500 may include a first power chip and a second power chip, and the first power chip is responsible for converting the input power into the first working power, and the second power chip is responsible for converting the input power into the second working power. Of course, it is not ruled out that the input power may be converted into the first working power and the second working power by a single chip at the same time. In addition, in some cases, the input power itself may have met the working requirements of the heat radiation source 100 or the air supply unit 200. For example, when the input power meets the working requirements of the heat radiation source 100 but does not meet the working requirements of the air supply unit 200, the power conversion unit 500 may be only connected to the air supply unit, and is only used to convert the input power into the first working power that meets the working requirements of the air supply unit 200; similarly, when the input power meets the working requirements of the air supply unit 200 but does not meet the working requirements of the heat radiation source 100, it is similar.

[0055] On the basis of the power conversion unit 500 being configured in the drying device, the main control unit 300 can control the working state of the heat radiation source 100 and the air supply unit 200 based on the power conversion unit 500. For example, during the operation of the drying device, if the power conversion unit 500 is required to provide the second working power for the heat radiation source 100, the main control unit 300 can send a heat radiation source power supply enable signal to the power conversion unit 500, and the power conversion unit 500 converts the input power to provide the heat radiation source with a second working power that meets the working requirements according to the heat radiation source power supply enable signal. Therefore, in the case of abnormalities in the heat radiation source 100 and the air supply unit 200, the main control unit 300 can stop sending the heat radiation source power supply enable signal to the power conversion unit 500 to cut off the power supply to the heat radiation source 100, so as to control the heat radiation source 100 to stop working. In addition, the main control unit 300 can also control the power size provided to the heat radiation source 100 through the power conversion unit 500, thereby controlling the heat radiation intensity of the heat radiation source 100.

[0056] Similarly, during the operation of the drying device, if the power conversion unit 500 is required to provide the first working power to the air supply unit 200, the main control unit 300 may also send an air supply unit power supply enable signal to the power conversion unit 500, and the power conversion unit 500 may convert the input power into the first working power that meets the working requirements of the air supply unit 200 according to the air supply unit power supply enable signal. Therefore, in the event of an abnormality in the air supply unit 200, the main control unit 300 may stop sending the air supply unit power supply enable signal to the power conversion unit 500 to cut off the power supply to the air supply unit 200, so as to control the air supply unit 200 to stop working.

[0057] In addition, in some cases, if the air supply unit 200 includes a motor, the main control unit 300 can also control the state of the motor through the motor drive unit to control the working state of the air supply unit 200. Based on this, the embodiment of the present application also provides a drying device including a motor drive unit, see Figure 8 , Figure 8 is a drying device including a motor drive unit shown in an exemplary embodiment of the present application, such as Figure 8 The drying device 07 shown in FIG. Figure 1The difference between the drying device shown is that it also includes a motor drive unit 600, and the air supply unit 200 includes a motor 210, wherein the motor drive unit 600 is connected between the main control unit 300 and the motor 210, and the main control unit 300 can send an air supply enable signal to the motor drive unit 600 so that the motor drive unit 600 controls the motor 210 to work according to the air supply enable signal, and the main control unit 300 can also send a drive signal to the motor drive unit 600 to control the specific working state of the motor 210, wherein the drive signal sent may include control parameters of the motor 210, such as the speed, direction and torque of the motor 210. Therefore, in the case of an abnormality in the air supply unit 200, the main control unit 300 can stop sending the air supply enable signal to the motor drive unit 600, or send a drive signal to the motor drive unit 600 for indicating that the speed of the motor 210 is controlled to be 0, so as to control the motor 210 to stop working, thereby controlling the working state of the air supply unit 200. In addition, the motor 210 may be a brushed motor or a brushless motor. Depending on the type of motor, the main control unit 300 may send a drive signal to the motor drive unit 600 through a single path or multiple paths. At the same time, the motor drive unit 600 may control the different rotation speeds of the motor 210 according to the different drive signals sent by the main control unit 300, thereby controlling the air flow delivery speed of the air supply unit 200, that is, controlling the wind speed. The motor drive unit 600 may be a MOS (MOSFET) chip, and the MOS chip may include a MOS tube, a MOS tube driver, and the like. Of course, it is not excluded that other components that can be used as drivers may also be used, such as IGBTs, triodes, and the like.

[0058] Based on the above-described embodiments, the present application also provides a more specific drying device, see Fig. 9 , Fig. 9 is a structural schematic diagram of a more specific drying device shown in an exemplary embodiment of the present application, such as Fig. 9 The drying device 08 shown includes a heat radiation source 100, an air supply unit 200, a main control unit 300, a power supply module 400, a power conversion unit 500, and a motor drive unit 600; the air supply unit 200 includes a motor 210; the main control unit 300 may include a sampling unit 310; the power supply module 400 also includes a discharge unit 410 and a power supply management unit 420; the discharge unit 410 includes a discharge drive unit 411 and a battery cell 412; the power supply management unit 420 includes a power supply manager 421 and a battery power management chip 422; the power conversion unit 500 includes a first power chip and a second power chip (not shown in the figure). The description of the drying device provided in this embodiment can refer to the contents introduced in the previous embodiment, and will not be repeated here.

[0059] In addition, the embodiment of the present application also separately provides a power supply module for a drying device, wherein the drying device may include a main control unit, and the main control unit is used to control the operation of the drying device and to exchange data with the power supply module;

[0060] The structure of the power supply module provided in this embodiment can be seen in Figure 5 , wherein the power supply module 400 may include a discharge unit 410 connected to the drying device and a power supply management unit 420 connected to the discharge unit 410; the power supply management unit 420 is used to control the discharge unit 410 to discharge to the drying device, and to exchange communication data with the main control unit, and to control the discharge unit to stop discharging when it is determined that the main control unit is abnormal according to the communication data.

[0061] For detailed instructions on the power supply module, please refer to Figures 5 to 6 The illustrations of the power supply module shown in the figure and the introduction of the embodiments described in the corresponding text will not be elaborated here.

[0062] The present application also provides a drying device, see Fig.10 , Fig.10 It is a drying device shown in an exemplary embodiment of the present application, and the drying device 09 includes:

[0063] The heat radiation source 100 is used for heat radiation to transfer heat to the object to be dried;

[0064] The air supply unit 200 is used to generate air flow in a working state to deliver the air flow to the object to be dried;

[0065] The main control unit 700 is used to control the working states of the air supply unit 200 and the heat radiation source 100, and to communicate data with the power supply module 400;

[0066] The power supply module 400 is used to supply power to the heat radiation source 100 and the air supply unit 200, and to exchange communication data with the main control unit 700, and to stop supplying power to the heat radiation source 100 and the air supply unit 200 when it is determined that the main control unit 700 is abnormal based on the communication data.

[0067] The drying device provided in this embodiment is different from the drying device provided in the previous embodiment in that the main control unit 700 in the drying device may be responsible for only controlling the normal operation or stop of the heat radiation source 100 and the air supply unit 200, while other modules are responsible for detecting abnormalities of the drying device, and the power supply module 400 and the main control unit 700 interact and communicate data to determine whether an abnormality occurs in the main control unit 700, and stop supplying power to the heat radiation source 100 and the air supply unit 200 if an abnormality occurs in the main control unit 700.

[0068] Of course, according to actual needs, the main control unit 700 can also be configured to perform abnormal detection of the drying device and control the operation of the drying device according to the detection result. For a detailed description of the drying device in this case, please refer to the previous Figures 1 to 9 The description of the embodiments of the drying device shown in the drawings and the corresponding text descriptions will not be expanded here.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0070] The above is a detailed introduction to the device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A drying device, characterized in that: include: A plurality of heat radiation sources, used for heat radiation, to directly transfer heat to the object to be dried, thereby accelerating the evaporation of water in the object to be dried; The thermal radiation source includes an infrared radiation source; An air supply unit, used for generating air flow in a working state to deliver the air flow to the object to be dried, so as to prevent the object to be dried from receiving heat from the heat radiation source and causing the temperature to be too high, and to accelerate the evaporation of water in the object to be dried; A main control unit, used to control the working states of the air supply unit and the heat radiation source, and to control the drying device to stop operating when an abnormality is detected in the drying device; A sampling unit is used to sample the current or voltage of the air supply unit and the heat radiation source, and send the sampled values ​​to the main control unit; the main control unit is also used to detect whether the air supply unit and the heat radiation source are abnormal through the sampled values, so as to determine whether to control the heat radiation source and / or the air supply unit to stop working.

2. The drying device according to claim 1, characterized in that: The drying device further comprises an air flow channel for conveying wind flow, and a heating element and a thermal element arranged in the air flow channel, wherein the thermal element is located close to the heating element; The sampling value is a sampling value of the voltage of the thermistor. The main control unit determines the temperature of the heating element through the sampling value, and then determines whether an abnormality occurs in the air supply unit, so as to determine whether to control the heat radiation source and / or the air supply unit to stop working.

3. The drying device according to claim 1, characterized in that: The sampling unit is integrated inside the main control unit.

4. The drying device according to claim 1, characterized in that: The drying device further includes a power supply module connected to the heat radiation source and the air supply unit, and the power supply module is used to supply power to the heat radiation source and the air supply unit.

5. The drying device according to claim 4, characterized in that: The power supply module is also used to exchange communication data with the main control unit, and the communication data is used to determine whether the main control unit or the power supply module is working abnormally.

6. The drying device according to claim 5, characterized in that: The communication data includes periodically exchanged heartbeat packets.

7. The drying device according to claim 6, characterized in that: The main control unit is also used to control the air supply unit and / or the heat radiation source to stop working when it is determined that the power supply module is abnormal.

8. The drying device according to claim 6, characterized in that: The power supply module is also used to stop supplying power to the heat radiation source and the air supply unit when it is determined that the main control unit is working abnormally.

9. The drying device according to claim 4, characterized in that: The main control unit is also used to notify the power supply module to stop supplying power to the heat radiation source when the operation of controlling the heat radiation source to stop working fails.

10. The drying device according to claim 9, characterized in that: After sending a control signal for stopping operation to the heat radiation source, the main control unit determines whether the operation of controlling the heat radiation source to stop operation fails according to whether the sampling value of the heat radiation source sampled by the sampling unit is zero.

11. The drying device according to claim 5, characterized in that: The power supply module includes a discharge unit and a power supply management unit; The power supply management unit is used to exchange communication data with the main control unit, and determine whether the main control unit is working abnormally according to the communication data, so as to control the discharge unit to discharge / stop discharge.

12. The drying device according to claim 11, characterized in that: The power management unit and / or the main control unit generates an enable signal through at least two enable pins according to a specified logic gate circuit; The enable signal generated by the power supply management unit is used to control the discharge of the discharge unit; the enable signal generated by the main control unit is used to control the working state of the air supply unit and / or the heat radiation source.

13. The drying device according to claim 1, characterized in that: The drying device further comprises a power conversion unit for providing a first working power to the air supply unit and / or providing a second working power to the heat radiation source.

14. The drying device according to claim 13, characterized in that: When the power conversion unit provides the thermal radiation source with a second working power supply, the main control unit is further configured to send a thermal radiation source power supply enable signal to the power conversion unit so that the power conversion unit generates the second working power supply.

15. The drying device according to claim 14, characterized in that: In the case that an abnormality occurs in the air supply unit and / or the heat radiation source, the main control unit stops sending a heat radiation source power supply enable signal to the power conversion unit.

16. The drying device according to claim 13, characterized in that: When the power conversion unit provides the first working power to the air supply unit, the main control unit is further used to send an air supply unit power supply enable signal to the power conversion unit so that the power conversion unit generates the first working power.

17. The drying device according to claim 16, characterized in that: When an abnormality occurs in the air supply unit, the main control unit stops sending the air supply unit power supply enable signal to the power conversion unit.

18. The drying device according to claim 1, characterized in that: The air supply unit includes a motor, and the drying device also includes a motor drive unit connected between the main control unit and the motor; The main control unit controls the working state of the motor by sending an air supply enable signal and a drive signal to the motor drive unit.

19. The drying device according to claim 18, characterized in that: When an abnormality occurs in the air supply unit, the main control unit stops sending an air supply enable signal to the motor drive unit; and / or The main control unit sends a driving signal to the motor driving unit for instructing to control the motor speed to 0.

20. The drying device according to claim 1, characterized in that: The drying device is a hair dryer, a hand dryer, a body dryer or a drying machine.

21. The drying device according to claim 4, characterized in that: The power supply module can be detachably mounted on the drying device.

22. The drying device according to claim 11, characterized in that: The discharge unit includes a discharge driving unit and a battery cell, and the power supply management unit controls the battery cell to discharge / stop discharging through the discharge driving unit.

23. The drying device according to claim 11, characterized in that: The power supply management unit includes a battery power management chip and a power supply manager; The power supply manager is used to output a discharge enable signal to the battery power management chip, so that the battery power management chip controls the discharge unit to discharge.

24. The drying device according to claim 2, characterized in that: The heating element is a heating resistor, and the thermal element is a thermistor.

25. The drying device according to claim 18, characterized in that The motor is a brushed motor or a brushless motor.

26. The drying device according to claim 18, characterized in that The motor driving unit controls the air flow conveying speed of the air supply unit according to the driving signal.

27. The drying device according to claim 18, characterized in that The motor drive unit is a MOS chip.

28. The drying device according to claim 1, characterized in that The drying device also includes an air flow channel for conveying wind flow; The heat radiation source is disposed in the air flow channel; or The heat radiation source is arranged around the air flow channel.

29. A power supply module for a drying device, characterized in that: The drying device includes a plurality of heat radiation sources, an air supply unit, a sampling unit and a main control unit; The main control unit is used to control the working states of the air supply unit and the heat radiation source, and when an abnormality is detected in the drying device, control the drying device to stop running, and communicate data with the power supply module; The plurality of heat radiation sources are used for heat radiation to directly transfer heat to the object to be dried to accelerate the evaporation of water in the object to be dried; the heat radiation sources include infrared radiation sources; The air supply unit is used to generate air flow in a working state to deliver the air flow to the object to be dried, so as to prevent the object to be dried from receiving heat from the heat radiation source and causing the temperature to be too high, and to accelerate the evaporation of water in the object to be dried; A sampling unit, used for sampling the current or voltage of the air supply unit and the heat radiation source, and sending the sampled values ​​to the main control unit; the main control unit is also used for detecting whether the air supply unit and the heat radiation source are abnormal through the sampled values, so as to determine whether to control the heat radiation source and / or the air supply unit to stop working; The power supply module includes a discharge unit connected to the drying device and a power supply management unit connected to the discharge unit; The power supply management unit is used to control the discharge unit to discharge to the drying device, and to exchange communication data with the main control unit, and to control the discharge unit to stop discharging when it is determined according to the communication data that the main control unit is abnormal.

30. The power supply module according to claim 29, characterized in that: The communication data includes periodically exchanged heartbeat packets.

31. The power supply module according to claim 29, characterized in that: The power supply management unit is further used to control the discharge unit to stop discharging according to a control signal output by the main control unit when the main control unit works normally.

32. The power supply module according to claim 29, characterized in that: The power supply management unit generates an enable signal through at least two enable pins according to a specified logic gate circuit to control the discharge of the discharge unit.

33. The power supply module according to claim 29, characterized in that: The power supply module can be detachably mounted on the drying device.

34. The power supply module according to claim 29, characterized in that: The discharge unit includes a discharge driving unit and a battery cell, and the power supply management unit controls the battery cell to discharge / stop discharging through the discharge driving unit.

35. The power supply module according to claim 29, characterized in that: The power supply management unit includes a battery power management chip and a power supply manager; The power supply manager is used to output a discharge enable signal to the battery power management chip, so that the battery power management chip controls the discharge unit to discharge.

36. The power supply module according to claim 29, characterized in that: The discharge unit is connected to an external AC power source.

37. A drying device, characterized in that: include: A plurality of heat radiation sources, used for heat radiation, to directly transfer heat to the object to be dried, thereby accelerating the evaporation of water in the object to be dried; The thermal radiation source includes an infrared radiation source; An air supply unit, used for generating and delivering air flow in a working state, so as to deliver air flow to the object to be dried, so as to prevent the object to be dried from receiving heat from the heat radiation source and causing the temperature to be too high, and to accelerate the evaporation of water in the object to be dried; A main control unit, used to control the working states of the air supply unit and the heat radiation source, control the drying device to stop running when an abnormality is detected in the drying device, and exchange data with the power supply module; A sampling unit, used for sampling the current or voltage of the air supply unit and the heat radiation source, and sending the sampled values ​​to the main control unit; the main control unit is also used for detecting whether the air supply unit and the heat radiation source are abnormal through the sampled values, so as to determine whether to control the heat radiation source and / or the air supply unit to stop working; The power supply module is used to supply power to the heat radiation source and the air supply unit, and to exchange communication data with the main control unit, and to stop supplying power to the heat radiation source and the air supply unit when it is determined that the main control unit is abnormal based on the communication data.

38. The drying device according to claim 37, characterized in that The communication data includes periodically exchanged heartbeat packets.

39. The drying device according to claim 37, characterized in that The main control unit is also used to control the air supply unit and / or the heat radiation source to stop working when it is determined that the power supply module is abnormal.

40. The drying device according to claim 37, characterized in that The drying device further comprises an air flow channel for conveying wind flow, and a heating element and a thermal element arranged in the air flow channel, wherein the thermal element is located close to the heating element; The sampling value is a sampling value of the voltage of the thermistor. The main control unit determines the temperature of the heating element through the sampling value, and then determines whether an abnormality occurs in the air supply unit, so as to determine whether to control the heat radiation source and / or the air supply unit to stop working.

41. The drying device according to claim 37, characterized in that The main control unit is also used to notify the power supply module to stop supplying power to the heat radiation source when the operation of controlling the heat radiation source to stop working fails.

42. The drying device according to claim 41, characterized in that After sending a control signal for stopping operation to the heat radiation source, the main control unit determines whether the operation of controlling the heat radiation source to stop operation fails according to whether the sampling value of the heat radiation source sampled by the sampling unit is zero.

43. The drying device according to claim 37, characterized in that: The sampling unit is integrated inside the main control unit.

44. The drying device according to claim 37, characterized in that: The power supply module includes a discharge unit and a power supply management unit; The power supply management unit is used to exchange communication data with the main control unit, and determine whether the main control unit is working abnormally according to the communication data, so as to control the discharge unit to discharge / stop discharge.

45. The drying device according to claim 44, characterized in that The power management unit and / or the main control unit generates an enable signal through at least two enable pins according to a specified logic gate circuit; The enable signal generated by the power supply management unit is used to control the discharge of the discharge unit; the enable signal generated by the main control unit is used to control the working state of the air supply unit and / or the heat radiation source.

46. ​​The drying device according to claim 37, characterized in that The drying device further comprises a power conversion unit for providing a first working power to the air supply unit and / or providing a second working power to the heat radiation source.

47. The drying device according to claim 46, characterized in that When the power conversion unit provides the thermal radiation source with a second working power supply, the main control unit is further configured to send a thermal radiation source power supply enable signal to the power conversion unit so that the power conversion unit generates the second working power supply.

48. The drying device according to claim 47, characterized in that In the case that an abnormality occurs in the air supply unit and / or the heat radiation source, the main control unit stops sending a heat radiation source power supply enable signal to the power conversion unit.

49. The drying device according to claim 46, characterized in that When the power conversion unit provides the first working power to the air supply unit, the main control unit is further used to send an air supply unit power supply enable signal to the power conversion unit so that the power conversion unit generates the first working power.

50. The drying device according to claim 49, characterized in that When an abnormality occurs in the air supply unit, the main control unit stops sending the air supply unit power supply enable signal to the power conversion unit.

51. The drying device according to claim 37, characterized in that The air supply unit includes a motor, and the drying device also includes a motor drive unit connected between the main control unit and the motor; The main control unit controls the working state of the motor by sending an air supply enable signal and a drive signal to the motor drive unit.

52. The drying device according to claim 51, characterized in that When an abnormality occurs in the air supply unit, the main control unit stops sending an air supply enable signal to the motor drive unit; and / or The main control unit sends a driving signal to the motor driving unit for instructing to control the motor speed to 0.

53. The drying device according to claim 37, characterized in that The drying device is a hair dryer, a hand dryer, a body dryer or a drying machine.

54. The drying device according to claim 37, characterized in that The power supply module can be detachably mounted on the drying device.

55. The drying device according to claim 44, characterized in that: The discharge unit includes a discharge driving unit and a battery cell, and the power supply management unit controls the battery cell to discharge / stop discharging through the discharge driving unit.

56. The drying device according to claim 44, characterized in that: The power supply management unit includes a battery power management chip and a power supply manager; The power supply manager is used to output a discharge enable signal to the battery power management chip, so that the battery power management chip controls the discharge unit to discharge.

57. The drying device according to claim 40, characterized in that The heating element is a heating resistor, and the thermal element is a thermistor.

58. The drying device according to claim 51, characterized in that The motor is a brushed motor or a brushless motor.

59. The drying device according to claim 51, characterized in that The motor driving unit controls the air flow conveying speed of the air supply unit according to the driving signal.

60. The drying device according to claim 51, characterized in that The motor drive unit is a MOS chip.

61. The drying device according to claim 37, characterized in that The drying device also includes an air flow channel for conveying wind flow; The heat radiation source is disposed in the air flow channel; or The heat radiation source is arranged around the air flow channel.

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