Electric heating water cup

Abstract

The invention discloses an electric heating water cup which comprises a cup body, an inner container arranged in the cup body, a bottom cover arranged on the lower side of the cup body and a cup cover arranged on the upper side of the cup body. The electric heating water cup further comprises a direct-current heating film, an acceleration heat conduction disc, an alternating-current heating tube, a connecting support, a PCB, an alternating-current power supply access set, a direct-current power supply access set, a temperature detection set, a temperature display module and a power switch. The electric heating water cup is controlled by the PCB and is connected with the direct-current heating film, the alternating-current heating tube, the power access group, the temperature detection and display module and the power switch. The direct-current heating film is spirally wound on the outer side of the inner container, the contact area is increased, and the heating rate is increased. The acceleration heat conduction disc is arranged between the lower side of the inner container and the alternating-current heating pipe, heat is rapidly and evenly transferred, and heating is accelerated. A user can choose to use an alternating current or direct current power supply for heating or the combination of the two, heating efficiency and applicability are improved, and waiting time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of electric water cups, and in particular to an electric water cup. Background Art

[0002] In recent years, with the improvement of people's living standards and the pursuit of a healthy lifestyle, electric water cups have been launched on the market. The original intention of their design is to meet people's needs to enjoy clean and hygienic boiled water anytime and anywhere in different occasions such as travel, business trips, and office work. And because of its significant advantages such as simple use and easy portability, it has gradually become an indispensable electrical appliance in people's daily life.

[0003] However, the existing electric water cup has a slow heating rate whether it is connected to AC power or DC power, and cannot achieve rapid heating. Therefore, technicians in this field are in urgent need of developing an electric water cup that can heat up quickly to meet actual usage needs. Summary of the invention

[0004] The main purpose of this application is to provide an electric water cup to solve the above-mentioned technical problems.

[0005] An electric water cup comprises a cup body, an inner liner arranged inside the cup body, a bottom cover arranged at the lower side of the cup body, and a cup cover arranged at the upper side of the cup body; the electric water cup further comprises:

[0006] A direct current heating film is spirally wound around the outer side of the inner tank;

[0007] An accelerating heat-conducting plate, which is arranged at the lower side of the inner pot;

[0008] An AC heating pipe, which is located at the lower side of the accelerating heat conducting plate;

[0009] A connecting bracket, which is arranged at the lower side of the AC heating tube and connected to the accelerating heat conducting plate;

[0010] A PCB circuit board, which is arranged on the connecting bracket and is electrically connected to the DC heating film and the AC heating tube;

[0011] An AC power supply access group, which is arranged at the lower rear side of the PCB circuit board and is electrically connected to the PCB circuit board;

[0012] A DC power supply access group, which is arranged at the lower side of the AC power supply access group and is electrically connected to the PCB circuit board;

[0013] A temperature detection group, which is arranged on the upper side of the middle part of the connecting bracket, passes through the accelerating heat conduction plate upwards and contacts the outer bottom of the inner tank, and is used to detect the temperature of the liquid in the inner tank;

[0014] A temperature display module, which is arranged on the front side of the connecting bracket and is electrically connected to the PCB circuit board, and is used to display the temperature of the liquid in the liner;

[0015] A power switch is arranged at the lower side of the temperature display module and is electrically connected to the PCB circuit board, and is used to switch the DC heating circuit or the AC heating circuit.

[0016] As described above, in the electric water cup, an upper convex portion protruding upward is provided in the middle of the upper side of the connecting bracket, and the upper convex portion is provided with upper and lower through-connecting holes for connecting the temperature detection group.

[0017] The electric water cup as described above, wherein the left front side of the connecting bracket is provided with a left front connecting portion, and the right front side thereof is provided with a right front connecting portion;

[0018] The left front connecting portion is provided with a left front wire groove, and the right front connecting portion is provided with a right front wire groove which is symmetrically arranged with respect to the left front wire groove, and the right front wire groove and the left front wire groove cooperate to be used for clamping the temperature display module;

[0019] The temperature display module is provided with an elastic auxiliary positioning piece protruding forward for elastic auxiliary positioning on the front side;

[0020] The upper side of the bottom cover is provided with an upwardly protruding left upper convex tightening portion, and a right upper convex tightening portion provided on the right side of the left upper convex tightening portion; the left upper convex tightening portion and the right upper convex tightening portion cooperate to tighten and limit the temperature display module.

[0021] As described above, the electric water cup, the cup body comprises an upper cup body and a lower cup body connected to the lower side of the upper cup body, and a containing space is formed between the upper cup body and the lower cup body;

[0022] The bottom cover is arranged on the lower side of the lower cup body and is connected to the connecting bracket.

[0023] The electric water cup as described above, wherein the PCB circuit board is provided with a power supply circuit, a drive circuit and a control circuit;

[0024] The input end of the power supply circuit is used to receive an AC voltage, and the output end of the power supply circuit is used for a DC voltage; the power supply circuit is electrically connected to the drive circuit and the control circuit respectively;

[0025] The driving circuit is used to drive the DC heating film and / or the accelerating heat conducting plate to perform heating work or stop heating work;

[0026] The output end of the control circuit is connected to the controlled end of the drive circuit, and the control circuit is used to output a corresponding control circuit to control the drive circuit to drive the DC heating film and / or the accelerated heat-conducting plate to heat or stop heating.

[0027] The electric water cup as described above is characterized in that the power supply circuit comprises:

[0028] A rectifier circuit, the rectifier circuit is used to access the AC voltage;

[0029] A step-down circuit, wherein the input end of the step-down circuit is connected to the output end of the rectifier circuit, and the step-down circuit is used to step down the rectified AC voltage and output a DC voltage of a preset threshold.

[0030] In the electric water cup as described above, the step-down circuit comprises:

[0031] A transformer, wherein the primary winding of the transformer is connected to the output end of the rectifier circuit;

[0032] an output rectifier diode, wherein the anode of the output rectifier diode is connected to the first secondary winding of the transformer, and the cathode of the output rectifier diode outputs a DC voltage of a preset threshold;

[0033] A feedback circuit, wherein the input end of the feedback circuit is connected to the output end of the rectifier circuit, and the output end of the feedback circuit is connected to the excitation winding of the transformer.

[0034] The electric water cup as described above, the driving circuit comprises:

[0035] A DC driving circuit, which is used to output a corresponding DC driving signal under the drive of the control circuit to control the DC heating film to heat or stop heating;

[0036] and / or,

[0037] An AC drive circuit is used to output a corresponding AC drive signal to control the accelerated heat conduction plate to heat or stop heating under the drive of the control circuit.

[0038] The electric water cup as described above, the DC drive circuit comprises:

[0039] a first switch tube, wherein a third resistor is connected between a controlled end of the first switch tube and the control circuit, and a fourth resistor is connected between the controlled end of the first switch tube and the second conducting end;

[0040] A heating film connection terminal, the heating film connection terminal is used to connect to the DC heating film, and the second end of the heating film connection terminal is connected to the first conduction end of the first switch tube;

[0041] The AC drive circuit comprises:

[0042] A thyristor output optocoupler, wherein a first resistor is connected between a first controlled end of the thyristor output optocoupler and an output end of the control circuit, and a second controlled end of the thyristor output optocoupler is connected to an output end of the power supply circuit;

[0043] The thyristor, the controlled end of the thyristor and the output end of the thyristor output optocoupler are directly connected to a second resistor, the first conduction end of the thyristor is used to access the AC voltage, and the second conduction end of the thyristor is electrically connected to the accelerating heat-conducting disk.

[0044] As described above, the electric water cup further comprises a temperature detection circuit on the PCB circuit board, wherein the temperature detection circuit is used to be connected to the temperature detection group, and the temperature detection circuit is used to obtain the liquid temperature signal and output it to the control circuit.

[0045] Compared with the prior art, the above application has the following advantages:

[0046] 1. The electric water cup of the present application uses a PCB circuit board as a control center to be electrically connected to components such as a DC heating film, an AC heating tube, an AC power access group, a DC power access group, a temperature detection group, a temperature display module and a power switch. Subsequently, the DC heating film is spirally wound around the outside of the inner tank to increase the contact area between the DC heating film and the inner tank, that is, when the DC power supply is connected through the DC power access group, the heating rate can be further improved under the set heating power; in addition, the accelerating heat conduction plate is arranged between the lower side of the inner tank and the AC heating tube, which helps to quickly and evenly transfer the heat generated by the AC heating tube to the bottom of the entire inner tank, and then the heat transfer speed can be greatly improved to achieve an outstanding effect of rapid heating; for this reason, the present application provides a variety of heating methods, and users can choose to use AC power or DC power for heating according to their needs, thereby not only improving the applicability of the electric water cup of the present application, but also greatly improving the heating rate and reducing the waiting time of users.

[0047] 2. The present application can also monitor the temperature of the liquid in the inner tank in real time through the temperature detection group, and intuitively display it to the user through the temperature display module, so that the user can accurately grasp the water temperature and avoid overheating or underheating; and the power switch is set on the lower side of the temperature display module, which is convenient for the user to operate the switch while checking the temperature, thereby improving the user experience.

[0048] 3. The power supply circuit described in the present application can adopt a wide voltage input mode, and after power conversion through the step-down chip U1, a stable voltage can be output, so that during the heating and boiling process, no matter how the input voltage changes, the boiling time can be ensured to remain consistent, thereby effectively ensuring the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present application 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 of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1 This is a three-dimensional diagram of the electric water cup of this application.

[0051] Figure 2 This is a partial exploded view of the electric water cup of the present application.

[0052] Figure 3 for Figure 2 A partial enlarged view Figure I .

[0053] Figure 4 This is a three-dimensional picture of the electric water cup of the present application after the cup body, liner, bottom cover and cup cover are hidden.

[0054] Figure 5 This is an exploded view of the electric water cup of the present application after the cup body, liner, bottom cover and cup cover are hidden.

[0055] Figure 6 This is an exploded view of the AC heating tube and the connecting bracket, temperature display module, and power switch in the electric water cup of this application.

[0056] Figure 7 This is a three-dimensional view of the cup cover in the electric water cup of the present application, showing an open state.

[0057] Figure 8 The circuit structure frame on the PCB board in the electric water cup of this application Figure 1 .

[0058] Fig. 9 for Figure 8 Circuit structure block diagram of the power supply circuit in .

[0059] Fig.10 This is the first circuit schematic diagram of the electric water cup of this application.

[0060] Fig.11 for Figure 8 2. Circuit structure block diagram of the driving circuit in FIG.

[0061] Fig.12 for Fig.11 Circuit diagram of the AC drive circuit in .

[0062] Fig.13 for Fig.11 Circuit diagram of the DC drive circuit in .

[0063] Fig.14 The circuit structure frame on the PCB board of the electric water cup of this application Figure 2 .

[0064] Fig.15 for Fig.14 Schematic diagram of the temperature detection circuit in .

[0065] Fig.16 for Figure 8 The circuit schematic of the USB input circuit in the power circuit.

[0066] Fig.17 Another circuit schematic diagram of the electric water cup of this application. DETAILED DESCRIPTION

[0067] 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.

[0068] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0069] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0070] In one embodiment of the present application, Figures 1 to 17As shown, an electric water cup includes a cup body 100, an inner liner 200 arranged inside the cup body 100, a bottom cover 300 arranged on the lower side of the cup body 100, and a cup cover 400 arranged on the upper side of the cup body 100; the electric water cup also includes a DC heating film 1, an accelerating heat conduction plate 2, an AC heating tube 3, a connecting bracket 4, a PCB circuit board 5, an AC power access group 6, a DC power access group 7, a temperature detection group 8, a temperature display module 9, and a power switch 10.

[0071] Specifically, the DC heating film 1 is spirally wound around the outer side of the inner tank 200; the accelerating heat-conducting plate 2 is arranged on the lower side of the inner tank 200; the AC heating tube 3 is on the lower side of the accelerating heat-conducting plate 2; the connecting bracket 4 is arranged on the lower side of the AC heating tube 3 and is connected to the accelerating heat-conducting plate 2; the PCB circuit board 5 is arranged on the connecting bracket 4 and is electrically connected to the DC heating film 1 and the AC heating tube 3; the AC power supply access group 6 is arranged on the lower rear side of the PCB circuit board 5 and is electrically connected to the PCB circuit board 5; the DC power supply access group 7 is arranged on the The AC power access group 6 is located at the lower side and is electrically connected to the PCB circuit board 5; the temperature detection group 8 is located at the upper side of the middle part of the connecting bracket 4, and contacts the outer bottom of the inner tank 200 after passing through the accelerating heat conduction plate 2 upward, and is used to detect the liquid temperature of the inner tank 200; the temperature display module 9 is located at the front side of the connecting bracket 4 and is electrically connected to the PCB circuit board 5, and is used to display the liquid temperature of the inner tank 200; the power switch 10 is located at the lower side of the temperature display module 9 and is electrically connected to the PCB circuit board 5, and is used to switch the DC heating circuit or the AC heating circuit.

[0072] In this embodiment, the electric water cup of the present application uses a PCB circuit board 5 as a control center, and is electrically connected to components such as a DC heating film 1, an AC heating tube 3, an AC power supply access group 6, a DC power supply access group 7, a temperature detection group 8, a temperature display module 9 and a power switch 10. Then, the DC heating film 1 is spirally wound around the outer side of the inner liner 200 to increase the contact area between the DC heating film 1 and the inner liner 200, that is, when the DC power supply is connected through the DC power supply access group 7, the heating rate can be further improved under the set heating power; in addition, the accelerating heat conduction plate 2 is arranged between the lower side of the inner liner 200 and the AC heating tube 3, which helps to quickly and evenly transfer the heat generated by the AC heating tube 3 to the bottom of the entire inner liner 200, and then the heat transfer speed can be greatly improved to achieve a prominent effect of rapid heating; for this reason, the present application provides a variety of heating methods, and the user can choose to use AC power or DC power for heating according to needs, or even use AC power and DC power for heating at the same time, thereby not only improving the applicability of the electric water cup of the present application, but also greatly improving the heating rate and reducing the waiting time of the user.

[0073] The present application can also monitor the temperature of the liquid in the inner tank 200 in real time through the temperature detection group 8, and intuitively display it to the user through the temperature display module 9, so that the user can accurately grasp the water temperature and avoid overheating or underheating; and the power switch 10 is set on the lower side of the temperature display module 9, which is convenient for the user to perform switch operations while checking the temperature, thereby improving the user experience.

[0074] Furthermore, the middle part of the upper side of the connecting bracket 4 is provided with an upwardly protruding upper convex portion 41, and the upper convex portion 41 is provided with an upper and lower through-connecting hole 411 for connecting the temperature detection group 8. The upper and lower through-connecting hole 411 is used to quickly connect the temperature detection group 8.

[0075] Furthermore, the connecting bracket 4 is provided with a left front connecting portion 42 on the left front side, and a right front connecting portion 43 on the right front side;

[0076] The left front connecting portion 42 is provided with a left front wire groove 421, and the right front connecting portion 43 is provided with a right front wire groove 431 which is symmetrically arranged with respect to the left front wire groove 421. The right front wire groove 431 cooperates with the left front wire groove 421 to clamp the temperature display module 9;

[0077] The temperature display module 9 is provided with an elastic auxiliary positioning member 91 protruding forward for elastic auxiliary positioning at the front side;

[0078] The upper side of the bottom cover 300 is provided with an upwardly protruding upper left convex tightening portion 3001, and an upper right convex tightening portion 3002 provided on the right side of the upper left convex tightening portion 3001; the upper left convex tightening portion 3001 and the upper right convex tightening portion 3002 cooperate to tighten and limit the temperature display module 9.

[0079] Furthermore, the cup body 100 includes an upper cup body 1001 and a lower cup body 1002 connected to the lower side of the upper cup body 1001, and a containing space is formed between the upper cup body 1001 and the lower cup body 1002;

[0080] The bottom cover 300 is disposed on the lower side of the lower cup body 1002 and is connected to the connecting bracket 4 .

[0081] In this embodiment, the cup body 100 is designed as the upper cup body 1001 and the lower cup body 1002. The purpose is to first modularly assemble the inner tank 200 and the DC heating film 1, the accelerating heat conducting plate 2, the AC heating tube 3, the connecting bracket 4, the PCB circuit board 5, the AC power access group 6, the DC power access group 7, the temperature detection group 8, the temperature display module 9, and the power switch 10 to form a whole inner tank heating module, and then assemble the whole inner tank heating module into the upper cup body 1001, and then connect the lower cup body 1002 to the upper cup body 1001 by a threaded connection, so that the whole inner tank heating module can be accommodated in the accommodating space formed by the upper cup body 1001 and the lower cup body 1002, and finally connect the bottom cover 300 and the connecting bracket 4 by a screw connection, so as to realize split modular assembly production, so as to greatly improve production efficiency and save production costs.

[0082] Furthermore, the PCB circuit board 5 is provided with a power supply circuit 51, a drive circuit 52 and a control circuit 53;

[0083] The input end of the power supply circuit 51 is used to connect to the AC voltage, and the output end of the power supply circuit 51 is used to output the DC voltage; the power supply circuit 51 is electrically connected to the drive circuit 52 and the control circuit 53 respectively; the drive circuit 52 is used to drive the DC heating film 1 and / or the AC heating tube 3 to perform heating or stop heating; the output end of the control circuit 53 is connected to the controlled end of the drive circuit 52, and the control circuit 53 is used to output the corresponding control circuit 53 to control the drive circuit 52 to drive the DC heating film 1 and / or the AC heating tube 3 to heat or stop heating.

[0084] In this embodiment, the DC heating film 1 and the AC heating tube 3 can work independently or simultaneously.

[0085] The power circuit 51 may further include a USB input circuit, which uses a PW6606 chip to transfer the power input from the USB interface USB1 and output the power to the power terminal of the DC heating film 1 .

[0086] In this embodiment, the USB input circuit can also automatically identify the maximum voltage and maximum current output by the adapter by utilizing the PW6606 chip, and adjust the output voltage and current of the USB port according to the identification result to ensure safe and efficient power supply for the device.

[0087] Furthermore, the power supply circuit 51 includes a rectifier circuit 511 and a step-down circuit 512;

[0088] The rectifier circuit 511 is used to access the AC voltage;

[0089] The input end of the step-down circuit 512 is connected to the output end of the rectifier circuit 511 , and the step-down circuit 512 is used to step down the rectified AC voltage and output a DC voltage of a preset threshold.

[0090] In this embodiment, the rectifier circuit 511 can be connected in a bridge rectifier mode to achieve conversion from AC to DC. The step-down circuit 512 uses a transformer to step down the voltage to ensure the stability and accuracy of the output voltage.

[0091] Furthermore, the step-down circuit 512 includes a transformer T1, an output rectifier diode D1, and a feedback circuit 5121;

[0092] The primary winding of the transformer T1 is connected to the output end of the rectifier circuit 511;

[0093] The positive electrode of the output rectifier diode D1 is connected to the first secondary winding of the transformer T1, and the negative electrode of the output rectifier diode D1 outputs a DC voltage of a preset threshold value;

[0094] The input end of the feedback circuit 5121 is connected to the output end of the rectifier circuit 511 , and the output end of the feedback circuit 5121 is connected to the excitation winding of the transformer T1 .

[0095] In this embodiment, the feedback circuit 5121 is used to monitor the output voltage in real time, and feed back the monitoring result to the excitation winding of the transformer T1, so as to realize dynamic adjustment of the output voltage. In this way, it can be ensured that even when the grid voltage fluctuates, the output voltage remains within the set stable range, thereby ensuring the heating performance and safety of the electric water cup. Among them, the feedback circuit 5121 can include a feedback chip IC2, and the voltage is stepped down through resistors R4 and R5, a diode D2 is connected to the second end of the resistor R5, and is connected to the signal input end of the feedback chip IC2, and a resistor R2 is connected between the control end of the feedback chip IC2 and the first end of the excitation winding of the transformer T1.

[0096] In this embodiment, in order to isolate the path between AC and DC and avoid interference between AC voltage and DC voltage, transformer T1 is used to isolate the path between AC and DC, so as to prevent a short circuit between AC and DC from causing electric shock to the user.

[0097] Furthermore, the driving circuit 52 includes a DC driving circuit 521 and an AC driving circuit 522;

[0098] The DC driving circuit 521 is used to output a corresponding DC driving signal under the drive of the control circuit 53 to control the DC heating film 1 to heat or stop heating.

[0099] In this embodiment, the DC drive circuit 521 can use PWM (pulse width modulation) technology to control the heating power of the DC heating film 1 by adjusting the pulse width to achieve precise temperature control. In addition, the DC drive circuit 521 also has an overcurrent protection function. When it is detected that the current exceeds the safety threshold, the power supply will be automatically cut off to prevent the heating film from being overheated or damaged or dangerous.

[0100] The AC driving circuit 522 is used to output a corresponding AC driving signal to control the AC heating tube 3 to heat or stop heating under the drive of the control circuit 53.

[0101] In this embodiment, the AC drive circuit 522 can use solid-state relay (SSR) technology or optocoupler technology to control the on and off of the AC power supply by controlling the switch state of the relay or optocoupler, thereby realizing heating control of the AC heating tube 3. The solid-state relay has the advantages of fast response speed, no mechanical wear, and long life, and can effectively improve the reliability and service life of the electric water cup.

[0102] Furthermore, the DC driving circuit 521 includes a first switch tube Q1 and a heating film connecting terminal CN5;

[0103] A third resistor R10 is connected between the controlled end of the first switch tube and the control circuit 53, and a fourth resistor R11 is connected between the controlled end of the first switch tube and the second conducting end;

[0104] The heating film connection terminal CN5 is used to connect to the DC heating film 1, and the second end of the heating film connection terminal CN5 is connected to the first conduction end of the first switch tube Q1;

[0105] In this embodiment, the first switch tube Q1 can be a MOSFET (metal oxide semiconductor field effect transistor) or an IGBT (insulated gate bipolar transistor). These devices have a low on-resistance and a high switching speed, which can effectively improve the heating efficiency and response speed of the electric water cup. By controlling the on and off of the first switch tube Q1, the DC heating film 1 can be accurately controlled. Among them, the heating film connection terminal CN5 is used to provide a stable current path to ensure that the DC heating film 1 can obtain the required driving signal to achieve heating.

[0106] Furthermore, the AC driving circuit 522 includes a thyristor output optocoupler IC1 and a thyristor BT1;

[0107] A first resistor R14 is connected between the first controlled end of the thyristor output optocoupler IC1 and the output end of the control circuit 53, and a second controlled end of the thyristor output optocoupler IC1 is connected to the output end of the power supply circuit 51;

[0108] The controlled end of the thyristor BT1 and the output end of the thyristor output optocoupler IC1 are directly connected to a second resistor R15, the first conducting end of the thyristor BT1 is used to access the AC voltage, and the second conducting end of the thyristor BT1 is electrically connected to the AC heating tube 3.

[0109] In this embodiment, the thyristor output optical coupler IC1 can be an optical coupler, which has good electrical isolation performance and can effectively isolate the control circuit 53 and the high voltage part, thereby improving the safety of the system. The control end of the optical coupler receives the signal from the control circuit 53, thereby controlling the conduction and cutoff of the thyristor BT1, thereby achieving precise control of the AC heating tube 3.

[0110] In addition, the second resistor R15 is used to limit the current outputted by the thyristor BT1 to the optocoupler, so as to prevent the optocoupler from being damaged due to excessive current. At the same time, the resistor can also play a certain filtering role to reduce noise interference in the circuit.

[0111] Furthermore, the accelerating heat-conducting plate 2 can be made of a high thermal conductivity material, such as silver, copper or aluminum, to ensure that the heat can be quickly and evenly transferred to the liquid in the inner tank 200.

[0112] Furthermore, a temperature detection circuit 54 is also provided on the PCB circuit board 5 , and the temperature detection circuit 54 is used to be connected to the temperature detection group 8 , and the temperature detection circuit 54 is used to obtain the liquid temperature signal and output it to the control circuit 53 .

[0113] In the present embodiment, the temperature detection group 8 is a temperature sensor, such as an NTC thermistor or a PT1000 temperature sensor, and these sensors have the characteristics of high precision and fast response. The temperature detection circuit 54 is responsible for converting the analog signal collected by the temperature sensor into a digital signal so that the control circuit 53 can process. By accurately measuring the temperature of the liquid, the temperature detection circuit 54 can monitor the heating process in real time to ensure that the liquid temperature remains within the range set by the user. Wherein, the temperature detection circuit 54 includes a resistor R6, a resistor R7, a resistor R8 and a resistor R9, and the resistor R6 and the resistor R7 form a first voltage-dividing bias network, and the resistor R8 and the resistor R9 form a second voltage-dividing bias network, and the common node of the resistor R6 and the resistor R7 is connected to at least one capacitor between the ground, and the common node of the resistor R8 and the resistor R9 is connected to at least one capacitor between the ground, and is connected to the temperature detection group 8 through the terminal CN2 and the terminal CN3.

[0114] Optionally, see Fig.17 As shown, the power supply circuit 51 is electrically connected to the drive circuit 52 and the control circuit 53 respectively, wherein the power supply circuit 51 includes a rectifier circuit 511 and a step-down circuit 512, wherein the step-down circuit 512 includes a step-down chip U1, and the drive circuit 52 includes a thyristor SCR1, and a resistor R9 is connected between the controlled end of the thyristor SCR1 and the control circuit 53.

[0115] In addition, a zero-crossing detection circuit and a voltage detection circuit are provided on the PCB circuit board. The input end of the zero-crossing detection circuit is connected to the neutral line, and the output end of the zero-crossing detection circuit is connected to the control circuit 53. The input end of the voltage detection circuit is connected to the neutral line, and the output end of the voltage detection circuit is connected to the control circuit 53.

[0116] The zero-crossing detection circuit includes a resistor R6 and a resistor R4, a first end of the resistor R6 is connected to the control circuit 53, a second end of the resistor R6 is connected to a first end of the resistor R4, and a second end of the resistor R4 is connected to the zero line.

[0117] Among them, the voltage detection circuit includes a diode D1, a resistor R5 and a resistor R3, the positive electrode of the diode D1 is connected to the control circuit 53, the negative electrode of the diode D1 is connected to the first end of the resistor R5, the second end of the resistor R3 is connected to the first end of the resistor R3, and the second end of the resistor R3 is connected to the neutral line.

[0118] In this embodiment, the power supply circuit 51 can adopt a wide voltage input mode, and after power conversion through the step-down chip U1, a stable voltage can be output, so that during the heating process, no matter how the input voltage changes, the boiling time can be ensured to remain consistent, thereby effectively ensuring the user experience.

[0119] The above is an implementation method provided in combination with specific content, and it is not considered that the specific implementation of this application is limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or any technical deduction or replacement made on the premise of the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. An electric water cup, comprising a cup body (100), an inner liner (200) arranged inside the cup body (100), a bottom cover (300) arranged at the lower side of the cup body (100), and a cup cover (400) arranged at the upper side of the cup body (100), characterized in that: The electric water cup also includes: A direct current heating film (1) is spirally wound around the outside of the inner container (200); An accelerating heat-conducting plate (2) disposed on the lower side of the inner container (200); An AC heating pipe (3) located at the lower side of the accelerating heat conducting plate (2); A connecting bracket (4), which is arranged on the lower side of the AC heating tube (3) and connected to the accelerating heat conducting plate (2); A PCB circuit board (5), which is arranged on the connecting bracket (4) and is electrically connected to the DC heating film (1) and the AC heating tube (3); An AC power supply access group (6), which is arranged on the lower rear side of the PCB circuit board (5) and is electrically connected to the PCB circuit board (5); A DC power supply access group (7), which is arranged at the lower side of the AC power supply access group (6) and is electrically connected to the PCB circuit board (5); a temperature detection group (8), which is arranged on the upper middle side of the connecting bracket (4), and passes upward through the accelerating heat conducting plate (2) and contacts the outer bottom of the inner pot (200), and is used to detect the temperature of the liquid in the inner pot (200); a temperature display module (9), which is arranged on the front side of the connecting bracket (4) and is electrically connected to the PCB circuit board (5), and is used to display the temperature of the liquid in the inner tank (200); A power switch (10) is arranged on the lower side of the temperature display module (9) and is electrically connected to the PCB circuit board (5) and is used to switch the DC heating circuit or the AC heating circuit.

2. The electric water cup according to claim 1, characterized in that: An upper convex portion (41) protruding upward is provided in the middle of the upper side of the connecting bracket (4), and an upper and lower through-connecting hole (411) penetrating from top to bottom for connecting the temperature detection group (8) is provided on the upper convex portion (41).

3. The electric water cup according to claim 2, characterized in that: The connecting bracket (4) is provided with a left front connecting portion (42) on the left front side, and a right front connecting portion (43) on the right front side; The left front connecting portion (42) is provided with a left front wire groove (421), and the right front connecting portion (43) is provided with a right front wire groove (431) which is arranged symmetrically with the left front wire groove (421), and the right front wire groove (431) and the left front wire groove (421) cooperate to be used for clamping the temperature display module (9); The temperature display module (9) is provided with an elastic auxiliary positioning member (91) protruding forward for elastic auxiliary positioning at the front side; The upper side of the bottom cover (300) is provided with an upwardly protruding left upper convex tightening portion (3001), and a right upper convex tightening portion (3002) provided on the right side of the left upper convex tightening portion (3001); the left upper convex tightening portion (3001) and the right upper convex tightening portion (3002) cooperate with each other to tighten and limit the temperature display module (9).

4. The electric water cup according to claim 3, characterized in that: The cup body (100) comprises an upper cup body (1001) and a lower cup body (1002) connected to the lower side of the upper cup body (1001), and a containing space is formed between the upper cup body (1001) and the lower cup body (1002); The bottom cover (300) is disposed on the lower side of the lower cup body (1002) and is connected to the connecting bracket (4).

5. The electric water cup according to any one of claims 1 to 4, characterized in that: The PCB circuit board (5) is provided with a power supply circuit (51), a drive circuit (52) and a control circuit (53); The input end of the power supply circuit (51) is used to receive an AC voltage, and the output end of the power supply circuit (51) is used to output a DC voltage; the power supply circuit (51) is electrically connected to the drive circuit (52) and the control circuit (53) respectively; The driving circuit (52) is used to drive the DC heating film (1) and / or the AC heating tube (3) to perform heating work or stop heating work; The output end of the control circuit (53) is connected to the controlled end of the drive circuit (52), and the control circuit (53) is used to output the corresponding control circuit (53) to control the drive circuit (52) to drive the DC heating film (1) and / or the AC heating tube (3) to heat or stop heating.

6. The electric water cup according to claim 5, characterized in that: The power supply circuit (51) comprises: A rectifier circuit (511), the rectifier circuit (511) being used to receive the AC voltage; A step-down circuit (512), wherein an input end of the step-down circuit (512) is connected to an output end of the rectifier circuit (511), and the step-down circuit (512) is used to step down the rectified AC voltage and output a DC voltage of a preset threshold.

7. The electric water cup according to claim 6, characterized in that: The step-down circuit (512) comprises: A transformer, wherein the primary winding of the transformer is connected to the output end of the rectifier circuit (511); an output rectifier diode, wherein the anode of the output rectifier diode is connected to the first secondary winding of the transformer, and the cathode of the output rectifier diode outputs a DC voltage of a preset threshold; A feedback circuit (5121), wherein the input end of the feedback circuit (5121) is connected to the output end of the rectifier circuit (511), and the output end of the feedback circuit (5121) is connected to the excitation winding of the transformer.

8. The electric water cup according to claim 5, characterized in that: The driving circuit (52) comprises: A direct current drive circuit (521), the direct current drive circuit (521) being used to output a corresponding direct current drive signal under the drive of the control circuit (53) to control the direct current heating film (1) to heat or stop heating; and / or, An AC drive circuit (522), the AC drive circuit (522) is used to output a corresponding AC drive signal under the drive of the control circuit (53) to control the AC heating tube (3) to heat or stop heating.

9. The electric water cup according to claim 8, characterized in that: The DC drive circuit (521) comprises: A first switch tube, a third resistor is connected between a controlled end of the first switch tube and the control circuit (53), and a fourth resistor is connected between the controlled end of the first switch tube and the second conducting end; A heating film connection terminal, the heating film connection terminal is used to connect to the DC heating film (1), and the second end of the heating film connection terminal is connected to the first conduction end of the first switch tube; The AC drive circuit (522) comprises: A thyristor output optocoupler, wherein a first resistor is connected between a first controlled end of the thyristor output optocoupler and an output end of the control circuit (53), and a second controlled end of the thyristor output optocoupler is connected to an output end of the power supply circuit (51); A thyristor, wherein a controlled end of the thyristor and an output end of the thyristor output optocoupler are directly connected to a second resistor, a first conducting end of the thyristor is used to access the AC voltage, and a second conducting end of the thyristor is electrically connected to the AC heating tube (3).

10. The electric water cup according to any one of claims 1 to 4, characterized in that: The PCB circuit board (5) is also provided with a temperature detection circuit (54), the temperature detection circuit (54) is used to be connected to the temperature detection group (8), and the temperature detection circuit (54) is used to obtain the liquid temperature signal and output it to the control circuit (53).

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