A smart cup with a hidden LED display function

Abstract

This utility model discloses a smart cup with a hidden LED display function. The smart cup includes a cup body and a cup base assembly, with the cup body equipped with a hidden LED display screen. The LED display screen adopts a hidden mounting structure that is side-fixed to a slot in the cup body, and includes an insulating and heat-insulating layer, an array of LED screens, a light-shielding baffle, and a light-transmitting baffle. The wireless charging module is encapsulated in the bottom of the cup, and includes a PCB with a battery pack, an insulating layer, a magnetic sheet, and a receiving charging coil. The control circuit includes a main control module, a switching circuit, a full-bridge drive circuit, a temperature measuring module, and an LED array. The main control module has an MCU; the switching circuit switches the power source according to the availability of an external power supply, while also accommodating charging; the full-bridge drive circuit connects the power interface to the charging module; the temperature measuring module detects the temperature of the cup body through an NTC thermistor. This utility model achieves a combination of appearance and function, can display information such as temperature, and supports flexible power supply and wireless charging.

Description

Technical Field

[0001] This utility model relates to a cup, specifically a smart cup with a hidden LED display function. Background Technology

[0002] In daily life, cups are indispensable household items. Traditional cups have a single function, serving only as containers for liquids. With the development of technology, some smart cups have emerged, capable of functions such as temperature detection. However, most of these smart cups use an external display design, which not only affects the overall aesthetics of the cup but also makes the display screen susceptible to damage from external impacts and friction.

[0003] Meanwhile, existing smart cups also have shortcomings in their power supply methods. Some smart cups rely solely on built-in batteries for power, requiring frequent battery removal and replacement or wired charging, which is inconvenient. In addition, in terms of power management, they lack intelligent power switching mechanisms and cannot flexibly switch power sources based on the availability of external power input, affecting the cup's battery life and ease of use.

[0004] Therefore, developing a smart cup with a hidden LED display function, flexible power supply, and intelligent power management is of great practical significance. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a smart cup with a hidden LED display function, which solves the problems of the single function of traditional cups and the external display screen of existing smart cups affecting aesthetics, so as to achieve an organic combination of cup appearance and function and improve the user experience.

[0006] To solve the above technical problems, the present invention is achieved through the following solution: The present invention provides a smart cup with a hidden LED display function, including a cup body and a cup holder assembly connected to the lower end of the cup body. The side of the cup body is provided with an LED display screen, which is a hidden installation structure.

[0007] The concealed installation structure includes a slot on the side of the cup body, and the LED display screen is fixed to the slot.

[0008] The LED display screen includes:

[0009] An insulating and heat-insulating layer is fixed to the side of the card slot;

[0010] An LED screen is attached to the outer surface of the insulating and heat-insulating layer, and the light source array of the LED screen is distributed;

[0011] The array-distributed LED screen is divided into multiple groups of LED light-emitting units by a light-shielding baffle and a light-transmitting baffle encapsulated on the light-emitting surface of the LED light-emitting unit and forming an integral surface with the light-shielding baffle. When the LED screen is not powered on, the integral surface is the same color as the cup body.

[0012] The cup holder assembly has a charging module;

[0013] The smart cup also includes a control circuit for controlling the operation of the LED display screen, the control circuit comprising:

[0014] The main control module has an MCU;

[0015] A switching circuit is electrically connected to the power interface. When the power interface is receiving external power, the circuit switches to supply power to the LED display screen from the external power source, while simultaneously charging the cup power source. The switching circuit also switches to supply power to the LED display screen from the cup power source when the power interface is receiving no external power input.

[0016] The full-bridge drive circuit has its power input terminal connected to the power interface and its multiple signal output terminals connected to the charging module.

[0017] A temperature measuring module electrically connected to the MCU, wherein the temperature sensor of the temperature measuring module is located on the cup holder assembly and in contact with the bottom surface of the cup body;

[0018] The LED array is divided into multiple LED line arrays. Each LED line array consists of multiple LED beads connected in series to form a light-emitting circuit. The LED array is controlled by the MCU.

[0019] Furthermore, the charging module is a wireless charging module.

[0020] Furthermore, the cup holder assembly includes a cup bottom, and the wireless charging module is encapsulated in the cup bottom, which includes a PCB with a battery pack, an insulating layer, a magnetic sheet, and a receiving end charging coil arranged from top to bottom, and the receiving end charging coil is electrically connected to the PCB.

[0021] Furthermore, the LED beads are RGB LED beads.

[0022] Furthermore, the MCU uses an ESP32C3 processor.

[0023] Furthermore, the temperature sensor is an NTC thermistor R8, and the first end of the NTC thermistor R8 is connected to the NTC pin of the MCU.

[0024] The first end of the NTC thermistor R8 is also connected to an RC filter circuit, and the other end of the RC filter circuit is grounded.

[0025] The second terminal of the NTC thermistor R1 is connected to the power supply VCC.

[0026] Furthermore, the switching circuit includes a VBAT interface, diode U18, diode U19, PMOS transistor Q6, capacitor C42, resistor R29, and resistor R30;

[0027] The VBAT interface has its GND grounded, and its VCC pin is connected to the positive terminal of diode U19, the first terminal of capacitor C42, and the drain D of PMOS transistor Q6, respectively. The second terminal of capacitor C42 is grounded.

[0028] The cathode of diode U19 is connected to the source S of PMOS transistor Q6, the cathode of diode U18, and the VOUT output circuit, respectively, and the anode of diode U18 is connected to the VBUS pin of the power interface.

[0029] The gate G of the PMOS transistor Q6 is connected to resistor R29. The other end of resistor R29 is connected to one end of resistor R30 and the VBUS pin of the power interface. The other end of resistor R30 is grounded.

[0030] Furthermore, the power interface is a Type-C interface.

[0031] Furthermore, the full-bridge drive circuit includes an operational amplifier U8, multiple capacitors, multiple resistors, and multiple MOS transistors;

[0032] The full-bridge drive circuit is connected to the VBRIDGE circuit of the Type-C interface. The VBRIDGE circuit is connected to the first terminal of capacitor C25, the drain D of MOS transistor Q2, the source S of MOS transistor Q4, and the first terminal of capacitor C40. Capacitor C25 is connected in parallel with capacitor C26, and capacitor C40 is connected in parallel with capacitor C41.

[0033] The full-bridge drive circuit includes a filter circuit consisting of four capacitors connected in parallel and an operational amplifier U8;

[0034] The other end of the capacitor C25 is connected to the first end of the resistor R14, the first end of the resistor R15, the first end of the filter circuit, the source S of the MOS transistor Q3, the drain D of the MOS transistor Q5, and the second end of the capacitor C40. The second end of the resistor R14 is grounded.

[0035] The source S of the MOS transistor Q2 is connected to the drain D of the MOS transistor Q3. The gate G of the MOS transistor Q2 is connected to the first end of the resistor R17. The second end of the resistor R17 is connected to the PWM2_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q3 is connected to the first end of the resistor R18. The second end of the resistor R18 is connected to the PWM2_LG pin of the wireless charging transmitter chip U7.

[0036] The second terminal of the filter circuit outputs TP4 node, which corresponds to TP5 node. The receiving end charging coil is connected between TP4 node and TP5 node. TP5 node is connected to capacitor C36, and the other end of capacitor C36 is connected to the COIL_V circuit. TP5 node is also connected to LX1 pin of wireless charging transmitter chip U7.

[0037] The drain D of the MOS transistor Q4 is connected to the source S of the MOS transistor Q5. The gate G of the MOS transistor Q4 is connected to the resistor R26. The other end of the resistor R26 is connected to the PWM1_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q5 is connected to the resistor R27. The other end of the resistor R27 is connected to the PWM1_LG pin of the wireless charging transmitter chip U7.

[0038] The second end of resistor R15 is connected to the first end of capacitor C27 and the non-inverting input of operational amplifier U8. The second end of capacitor C27 is connected to the ground terminal of resistor R14 and the first end of resistor R16. The second end of resistor R16 is connected to the inverting input of operational amplifier U8 and the first end of resistor R19. The second end of resistor R19 is connected to the output terminal of operational amplifier U8 and the first end of capacitor C35. The second end of capacitor C35 is connected to the CODE_DET_I pin of wireless charging transmitter chip U7.

[0039] The positive power supply terminal of the operational amplifier U8 is connected to capacitor C34 and resistor R23 respectively. The other end of capacitor C34 is grounded, and the other end of resistor R23 is connected to the HVCC pin of the wireless charging transmitter chip U7.

[0040] Furthermore, the COIL_V circuit is connected to the positive terminal of diode D3, the negative terminal of diode D3 is connected to the first end of resistor R20, the second end of resistor R20 is connected to the first end of capacitor C28, the first end of resistor R24, and the first end of capacitor C37, and capacitor C28 is connected in parallel with resistor R21.

[0041] The second end of capacitor C28 is connected to the first end of capacitor C29. Resistor R22 is connected in parallel with capacitor C29. The second end of capacitor C29 is connected to the second end of resistor R24, the first end of capacitor C37, and the VCOIL_SENSE pin of wireless charging transmitter chip U7. The second end of capacitor C37 is connected to the CODE_DE_V pin of wireless charging transmitter chip U7.

[0042] Compared with the prior art, the beneficial effects of this utility model are:

[0043] 1. The LED display screen of this utility model adopts a hidden installation structure. When not powered on, its entire surface is the same color as the cup body, ensuring the overall aesthetics of the cup, while avoiding the problem of the display screen being easily damaged due to being external.

[0044] 2. This utility model integrates a temperature detection function. The temperature measurement module can detect the temperature of the liquid in the cup in real time and display it on the LED display screen, so that users can understand the liquid temperature and avoid burns.

[0045] 3. This utility model is equipped with a switching circuit, which can flexibly switch the power supply source according to whether there is an external power input. When there is an external power supply, the external power supply powers the LED display screen and charges the cup power supply at the same time. When there is no external power supply, the cup power supply provides power, which improves the cup's battery life and ease of use.

[0046] 4. This utility model adopts a wireless charging module, combined with a full-bridge drive circuit, to realize the wireless charging function, eliminating the need for frequent plugging and unplugging of charging cables and improving the user experience.

[0047] 5. The LED array of this utility model uses RGB lamp beads and is divided into multiple LED line arrays, which can display rich colors and information to meet different display needs of users.

[0048] 6. The main control module of this utility model adopts an ESP32C3 processor, which has stable performance and can effectively control the coordinated work of various modules to ensure the stable operation of the smart cup.

[0049] 7. The temperature sensor of this utility model uses an NTC thermistor and is combined with an RC filter circuit, which improves the accuracy and stability of temperature detection.

[0050] 8. The power interface of this utility model adopts a Type-C interface, which has the advantages of strong versatility and fast charging speed. Attached Figure Description

[0051] Figure 1 This is a three-dimensional view of the smart cup of this utility model.

[0052] Figure 2This is an exploded view of the smart cup of this utility model.

[0053] Figure 3 This is a structural diagram of the LED display screen of this utility model.

[0054] Figure 4 This is a diagram showing the charging status of the smart cup of this utility model.

[0055] Figure 5 This is the circuit diagram of the main control module of this utility model.

[0056] Figure 6 This is the circuit diagram of the temperature measurement module of this utility model.

[0057] Figure 7-8 The connection forms the full-bridge drive circuit diagram of this utility model.

[0058] Figure 9 This is the circuit diagram of the iridescent LED array of this utility model.

[0059] Figure 10 for Figure 9 A thumbnail of the LED array.

[0060] Figure 11 This is the switching circuit diagram of this utility model.

[0061] Figure 12 This is a circuit diagram of the wireless charging transmitter chip of this utility model.

[0062] Figure 13 This is a circuit diagram of the wireless charging receiver chip module of this utility model.

[0063] Figure 14 This is the circuit diagram of the Type-C interface of this utility model.

[0064] Figure 15 This is the circuit diagram of the touch button of this utility model.

[0065] Figure 16 This is a circuit diagram of an LED display screen composed of RGB circuits according to this utility model.

[0066] Figure 17 for Figure 16 Partial circuit diagram in the upper left corner.

[0067] Figure 18 for Figure 16 Partial circuit diagram in the lower left corner.

[0068] The attached diagram shows the following components: 1. Cup body; 2. Handle; 3. LED display screen; 4. Touch buttons; 5. Cup bottom; 6. PCB; 7. Insulating layer; 8. Magnetic sheet; 9. Receiver charging coil; 10. Charging base; 11. Transmitter charging coil; 12. Main control module; 13. Temperature measurement module; 14. Full-bridge drive circuit; 15. Subsequent stage circuit; 16. LED array; 17. LED array abbreviation. Figure 15 16. Switching circuit; 17. Wireless charging transmitter chip U7 circuit; 18. Wireless charging receiver chip module; 19. Type-C interface circuit; 20. Touch button circuit; 31. Insulating and heat-insulating layer; 32. LED screen; 33. Light-transmitting baffle; 34. Light-shielding baffle; 101. Card slot. Detailed Implementation

[0069] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0070] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0071] Example 1: The specific structure of this utility model is as follows:

[0072] Please refer to the appendix. Figure 1-15 The present invention discloses a smart cup with a hidden LED display function, comprising a cup body 1 and a cup holder assembly connected to the lower end of the cup body 1. The side of the cup body 1 is provided with an LED display screen 3, which is a hidden installation structure.

[0073] The concealed installation structure includes a slot 101 on the side of the cup body 1, the LED display screen 3 is fixed to the slot 101, and the cup body 1 is provided with a handle 2 on the side.

[0074] The LED display screen 3 includes:

[0075] The insulating and heat-insulating layer 31 is fixed to the side of the card slot 101;

[0076] An LED screen 32 is attached to the outer surface of the insulating and heat-insulating layer 31, and the light source array of the LED screen 32 is distributed.

[0077] The array-distributed LED screen 32 is divided into multiple groups of LED light-emitting units by a light-shielding baffle 34 and a light-transmitting baffle 33 encapsulated on the light-emitting surface of the LED light-emitting unit and forming an integral surface with the light-shielding baffle 34. When the LED screen 32 is not powered on, the integral surface is the same color as the cup body 1.

[0078] The cup holder assembly has a charging module;

[0079] The smart cup also includes a control circuit for controlling the operation of the LED display screen 3, the control circuit including:

[0080] The main control module 11 has an MCU, which uses an ESP32C3 processor; this processor has a built-in onboard antenna and integrates 2.4GHz Wi-Fi and Bluetooth Low Energy. (LE) Wireless communication, Wi-Fi and Bluetooth coexist, sharing the same antenna. The processor is a 32-bit RISC-V single-core processor with a main frequency of up to 160MHz, 16 GPIO ports, 1 I2C, 6 LEDPWM channels, 3 DMA channels, 2 serial ports, and 2 12-bit SAR analog-to-digital converters. Standard connections: NTC (temperature detection analog signal input), KEY (touch button signal input), EN (power management chip output trigger), INSEL (receive power supply / charging indicator signal) (required). RGB screen port: DIN (RGB screen signal output). RGB screen: SIN, SCK cascade control of 4 LED driver chips, 74CM (shift register clock line), 74CS (memory register clock line), 74IN1, 74IN2 (shift register signal input). The two shift register clock lines are multiplexed, but the data lines are not multiplexed.

[0081] The switching circuit 16 is electrically connected to the power interface. When it is determined that there is an external power source charging the power interface, it switches to supply power to the LED display screen 3 from the external power source, while simultaneously charging the cup power source. The switching circuit also switches to supply power to the LED display screen 3 from the cup power source when it is determined that there is no external power input to the power interface.

[0082] The full-bridge drive circuit 13 has a power input terminal connected to a power interface and multiple signal output terminals connected to a charging module; the full-bridge drive circuit 13 includes the subsequent stage circuit 14.

[0083] A temperature measuring module 12 electrically connected to the MCU, wherein the temperature sensor of the temperature measuring module 12 is located on the cup holder assembly and in contact with the bottom surface of the cup body 1;

[0084] LED array 15, which is divided into multiple LED line arrays, each LED line array is composed of multiple LED beads connected in series to form a light-emitting circuit, and the LED array 15 is controlled by the MCU.

[0085] The charging module is a wireless charging module.

[0086] The cup holder assembly includes a cup base 5, and the wireless charging module is encapsulated in the cup base 5. The module includes, from top to bottom, a PCB 6 with a battery pack, an insulating layer 7, a magnetic sheet 8, and a receiving charging coil 9. The charging coil 9 is electrically connected to the PCB 6. This utility model smart cup is equipped with a charging base 10, which has a transmitting charging coil 1001. Figure 12 This is a circuit diagram of the wireless charging transmitter chip of this utility model. Figure 12 It is the wireless charging transmitter chip U7 circuit 17. Figure 13 This is a circuit diagram of the wireless charging receiver chip module of this utility model. Specifically, the transmitting chip uses an IP6808 charging chip, and the receiving chip uses an IP6832 charging chip.

[0087] The LED beads are RGB beads.

[0088] The temperature sensor is an NTC thermistor R8, and the first end of the NTC thermistor R8 is connected to the NTC pin of the MCU.

[0089] The first end of the NTC thermistor R8 is also connected to an RC filter circuit, and the other end of the RC filter circuit is grounded.

[0090] The second terminal of the NTC thermistor R1 is connected to the power supply VCC.

[0091] The switching circuit includes a VBAT interface, diode U18, diode U19, PMOS transistor Q6, capacitor C42, resistor R29, and resistor R30.

[0092] The VBAT interface has its GND grounded, and its VCC pin is connected to the positive terminal of diode U19, the first terminal of capacitor C42, and the drain D of PMOS transistor Q6, respectively. The second terminal of capacitor C42 is grounded.

[0093] The cathode of diode U19 is connected to the source S of PMOS transistor Q6, the cathode of diode U18, and the VOUT output circuit, respectively, and the anode of diode U18 is connected to the VBUS pin of the power interface.

[0094] The gate G of the PMOS transistor Q6 is connected to resistor R29. The other end of resistor R29 is connected to one end of resistor R30 and the VBUS pin of the power interface. The other end of resistor R30 is grounded.

[0095] The power interface is a Type-C interface 19;

[0096] The full-bridge drive circuit 13 includes an operational amplifier U8, multiple capacitors, multiple resistors, and multiple MOS transistors;

[0097] The full-bridge drive circuit 13 is connected to the VBRIDGE circuit of the Type-C interface. The VBRIDGE circuit is connected to the first terminal of capacitor C25, the drain D of MOS transistor Q2, the source S of MOS transistor Q4, and the first terminal of capacitor C40. Capacitor C25 is connected in parallel with capacitor C26, and capacitor C40 is connected in parallel with capacitor C41.

[0098] The full-bridge drive circuit 13 includes a filter circuit consisting of four capacitors connected in parallel and an operational amplifier U8;

[0099] The other end of the capacitor C25 is connected to the first end of the resistor R14, the first end of the resistor R15, the first end of the filter circuit, the source S of the MOS transistor Q3, the drain D of the MOS transistor Q5, and the second end of the capacitor C40. The second end of the resistor R14 is grounded.

[0100] The source S of the MOS transistor Q2 is connected to the drain D of the MOS transistor Q3. The gate G of the MOS transistor Q2 is connected to the first end of the resistor R17. The second end of the resistor R17 is connected to the PWM2_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q3 is connected to the first end of the resistor R18. The second end of the resistor R18 is connected to the PWM2_LG pin of the wireless charging transmitter chip U7.

[0101] The second terminal of the filter circuit outputs TP4 node, and TP4 node corresponds to TP5 node. The receiving end charging coil 9 is connected between TP4 node and TP5 node. TP5 node is connected to capacitor C36, and the other end of capacitor C36 is connected to COIL_V circuit. TP5 node is also connected to LX1 pin of wireless charging transmitter chip U7.

[0102] The drain D of the MOS transistor Q4 is connected to the source S of the MOS transistor Q5. The gate G of the MOS transistor Q4 is connected to the resistor R26. The other end of the resistor R26 is connected to the PWM1_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q5 is connected to the resistor R27. The other end of the resistor R27 is connected to the PWM1_LG pin of the wireless charging transmitter chip U7.

[0103] The second end of resistor R15 is connected to the first end of capacitor C27 and the non-inverting input of operational amplifier U8. The second end of capacitor C27 is connected to the ground terminal of resistor R14 and the first end of resistor R16. The second end of resistor R16 is connected to the inverting input of operational amplifier U8 and the first end of resistor R19. The second end of resistor R19 is connected to the output terminal of operational amplifier U8 and the first end of capacitor C35. The second end of capacitor C35 is connected to the CODE_DET_I pin of wireless charging transmitter chip U7.

[0104] The positive power supply terminal of the operational amplifier U8 is connected to capacitor C34 and resistor R23 respectively. The other end of capacitor C34 is grounded, and the other end of resistor R23 is connected to the HVCC pin of the wireless charging transmitter chip U7.

[0105] The COIL_V circuit is connected to the positive terminal of diode D3. The negative terminal of diode D3 is connected to the first end of resistor R20. The second end of resistor R20 is connected to the first end of capacitor C28, the first end of resistor R24, and the first end of capacitor C37. Resistor R21 is connected in parallel with capacitor C28.

[0106] The second end of capacitor C28 is connected to the first end of capacitor C29. Resistor R22 is connected in parallel with capacitor C29. The second end of capacitor C29 is connected to the second end of resistor R24, the first end of capacitor C37, and the VCOIL_SENSE pin of wireless charging transmitter chip U7. The second end of capacitor C37 is connected to the CODE_DE_V pin of wireless charging transmitter chip U7.

[0107] The MCU of this invention is also connected to a touch button circuit 20, which controls the switching on and off of the LED display screen 3.

[0108] The circuit system of this smart cup uses a 32-bit RISC-V single-core MCU of model ESP32C3 as the main control core. This processor integrates 2.4GHz Wi-Fi and low-power Bluetooth functions, and realizes wireless communication through an onboard antenna. Its 16 GPIO ports and rich interfaces are connected to various functional modules: on the one hand, it is connected to a temperature measurement module composed of NTC thermistor R8 (the NTC pin is connected to the temperature detection analog signal, and the first end is connected to the RC filter circuit to ground, and the second end is connected to the power supply VCC) to obtain the temperature information of the bottom surface of the cup in real time; on the other hand, it is connected to the touch control button circuit to receive the switch control signal; at the same time, it controls the LED display screen through the RGB screen port (DIN signal output) or RGB screen interface. The RGB circuit uses a CAT4016Y-T2 driver chip and a 74HC595 shift register to drive an LED array composed of RGB lamp beads (divided into multiple series-connected line arrays).

[0109] The power management section includes a switching circuit with a VBAT interface, two diodes, a PMOS transistor, and resistors and capacitors. It detects the external power supply through the VBUS pin of the Type-C interface: when there is an external power supply, it supplies power to the VOUT output circuit through diode U18 (while charging the cup power supply), and controls the PMOS transistor to be cut off through a resistor voltage divider; when there is no external power supply, the PMOS transistor is turned on, and the cup power supply supplies power through diode U19, ensuring that the LED display screen continues to work.

[0110] The charging system supports both wired and wireless charging methods: wired charging is achieved through a Type-C interface; in the wireless charging module, the receiver, packaged at the bottom of the cup, includes a PCB with a battery pack, an insulating layer, a magnetic sheet, and a receiver charging coil (electrically connected to the PCB), which works in conjunction with the transmitter coil of the external charging base. The transmitter uses an IP6808 chip, and the receiver uses an IP6832 chip. The full-bridge driver circuit connects to the VBRIDGE circuit of the Type-C interface and includes an operational amplifier U8, multiple sets of capacitors (forming a filter circuit), resistors, and MOS transistors. The MOS transistors are driven by the PWM control signal of the wireless charging transmitter chip to realize energy transfer from the charging coil. At the same time, the operational amplifier and other components form a detection circuit to feed back the charging status signal to the transmitter chip.

[0111] In the overall circuit, after receiving the temperature signal, the main control module controls the LED display to present the temperature information in a hidden display mode (the same color as the cup body when not powered on). The switching circuit and the full-bridge drive circuit ensure stable switching between power supply and charging, realizing intelligent temperature control display and convenient charging functions.

[0112] Example 2:

[0113] like Figure 9 and Figure 16-18 As shown, the LED display screen 3 of this utility model has two structures, one of which is... Figure 9 One is a colorful LED array circuit diagram, and the other is... Figure 16 The circuit diagram shows an LED display screen composed of RGB circuitry. The RGB circuit uses the CAT4016Y-T2 LED driver chip. The RGB circuit also includes a 74HC595 shift register chip with serial input and parallel output.

[0114] When the smart cup of this invention is in use, if the cup body 1 contains liquid, the temperature measuring module 12 detects the liquid temperature and transmits the temperature information to the main control module 11. The main control module 11 then controls the LED array 15 to display the temperature information on the LED display screen 3. When charging is required, the cup can be placed on a wireless charger for wireless charging, or it can be wired via a Type-C interface. During charging, the switching circuit automatically switches the power source to ensure the normal operation of the LED display screen 3.

[0115] In summary, the LED display screen of this utility model adopts a hidden installation structure. When not powered on, its overall surface is the same color as the cup body, ensuring the overall aesthetics of the cup, while avoiding the problem of the display screen being easily damaged due to being external.

[0116] This invention integrates a temperature detection function. The temperature measurement module can detect the temperature of the liquid in the cup in real time and display it on an LED display screen, so that users can easily understand the liquid temperature and avoid burns.

[0117] This invention features a switching circuit that allows for flexible switching of the power supply source based on the availability of an external power input. When an external power source is available, it powers the LED display screen and simultaneously charges the cup. When no external power source is available, the cup powers the cup, thus improving the cup's battery life and ease of use.

[0118] This invention uses a wireless charging module, combined with a full-bridge drive circuit, to achieve wireless charging functionality, eliminating the need for frequent plugging and unplugging of charging cables and improving the user experience.

[0119] This utility model uses RGB LED beads and is divided into multiple LED line arrays, which can display rich colors and information to meet different display needs of users.

[0120] The main control module of this invention uses an ESP32C3 processor, which has stable performance and can effectively control the coordinated work of various modules to ensure the stable operation of the smart cup.

[0121] This utility model's temperature sensor uses an NTC thermistor and is combined with an RC filter circuit, which improves the accuracy and stability of temperature detection.

[0122] The power interface of this utility model adopts a Type-C interface, which has the advantages of strong versatility and fast charging speed.

[0123] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A smart cup with hidden LED display function, comprising a cup body (1) and a cup base assembly connected with the lower end of the cup body (1), characterized in that, The side of the cup body (1) is provided with an LED display screen (3), which is a hidden installation structure; The concealed installation structure includes a slot (101) on the side of the cup body (1), and the LED display screen (3) is fixed to the slot (101); The LED display screen (3) includes: The insulating and heat-insulating layer (31) is fixed to the card slot (101) on the side; An LED screen (32) is attached to the outer surface of the insulating and heat-insulating layer (31), and the light source array of the LED screen (32) is distributed; The array-distributed LED screen (32) is divided into multiple groups of LED light-emitting units by a light-shielding baffle (34) and a light-transmitting baffle (33) is encapsulated on the light-emitting surface of the LED light-emitting unit and forms an integral surface with the light-shielding baffle (34). When the LED screen (32) is not powered on, the integral surface is the same color as the cup body (1). The cup holder assembly has a charging module; The smart cup also includes a control circuit for controlling the operation of the LED display screen (3), the control circuit including: The main control module (11) has an MCU; The switching circuit is electrically connected to the power interface. When the power interface is charged by an external power source, it switches to supply power to the LED display screen (3) from the external power source. At the same time, the external power source charges the cup power source. The switching circuit also switches to supply power to the LED display screen (3) from the cup power source when the power interface is not charged by an external power source. The full-bridge drive circuit (13) has a power input terminal connected to the power interface and multiple signal output terminals connected to the charging module. A temperature measuring module (12) electrically connected to the MCU, wherein the temperature sensor of the temperature measuring module (12) is located on the cup holder assembly and in contact with the bottom surface of the cup body (1); The LED array (15) is divided into multiple LED line arrays. Each LED line array is composed of multiple LED beads connected in series to form a light-emitting circuit. The LED array (15) is controlled by the MCU. 2.The smart cup with hidden LED display function according to claim 1, wherein, The charging module is a wireless charging module. 3.The smart cup with hidden LED display function according to claim 2, wherein, The cup holder assembly includes a cup bottom (5), and the wireless charging module is encapsulated in the cup bottom (5). It includes a PCB (6) with a battery pack, an insulating layer (7), a magnetic sheet (8), and a receiving end charging coil (9) arranged from top to bottom. The receiving end charging coil (9) and the PCB (6) are electrically connected.

4. The smart cup with hidden LED display function according to claim 1, characterized in that, The LED beads are RGB beads.

5. The smart cup with hidden LED display function according to claim 1, characterized in that, The MCU uses an ESP32C3 processor. 6.The smart cup with hidden LED display function according to claim 5, wherein, The temperature sensor is an NTC thermistor R8, and the first end of the NTC thermistor R8 is connected to the NTC pin of the MCU. The first end of the NTC thermistor R8 is also connected to an RC filter circuit, and the other end of the RC filter circuit is grounded. The second terminal of the NTC thermistor R1 is connected to the power supply VCC. 7.The smart cup with hidden LED display function of claim 1, wherein, The switching circuit includes a VBAT interface, diode U18, diode U19, PMOS transistor Q6, capacitor C42, resistor R29, and resistor R30. The VBAT interface has its GND grounded, and its VCC pin is connected to the positive terminal of diode U19, the first terminal of capacitor C42, and the drain D of PMOS transistor Q6, respectively. The second terminal of capacitor C42 is grounded. The cathode of diode U19 is connected to the source S of PMOS transistor Q6, the cathode of diode U18, and the VOUT output circuit, respectively, and the anode of diode U18 is connected to the VBUS pin of the power interface. The gate G of the PMOS transistor Q6 is connected to resistor R29. The other end of resistor R29 is connected to one end of resistor R30 and the VBUS pin of the power interface. The other end of resistor R30 is grounded. 8.The smart cup with hidden LED display function according to claim 1 or 7, characterized in that, The power interface is a Type-C interface. 9.The smart cup with hidden LED display function of claim 8, wherein, The full-bridge drive circuit (13) includes an operational amplifier U8, multiple capacitors, multiple resistors, and multiple MOS transistors; The full-bridge drive circuit (13) is connected to the VBRIDGE circuit of the Type-C interface. The VBRIDGE circuit is connected to the first terminal of capacitor C25, the drain D of MOS transistor Q2, the source S of MOS transistor Q4, and the first terminal of capacitor C40. Capacitor C25 is connected in parallel with capacitor C26, and capacitor C40 is connected in parallel with capacitor C41. The full-bridge drive circuit (13) includes a filter circuit consisting of four capacitors connected in parallel and an operational amplifier U8; The other end of the capacitor C25 is connected to the first end of the resistor R14, the first end of the resistor R15, the first end of the filter circuit, the source S of the MOS transistor Q3, the drain D of the MOS transistor Q5, and the second end of the capacitor C40. The second end of the resistor R14 is grounded. The source S of the MOS transistor Q2 is connected to the drain D of the MOS transistor Q3. The gate G of the MOS transistor Q2 is connected to the first end of the resistor R17. The second end of the resistor R17 is connected to the PWM2_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q3 is connected to the first end of the resistor R18. The second end of the resistor R18 is connected to the PWM2_LG pin of the wireless charging transmitter chip U7. The second end of the filter circuit outputs TP4 node, and TP4 node corresponds to TP5 node. The receiving end charging coil (9) is connected between TP4 node and TP5 node. TP5 node is connected to capacitor C36. The other end of capacitor C36 is connected to COIL_V circuit. TP5 node is also connected to LX1 pin of wireless charging transmitter chip U7. The drain D of the MOS transistor Q4 is connected to the source S of the MOS transistor Q5. The gate G of the MOS transistor Q4 is connected to the resistor R26. The other end of the resistor R26 is connected to the PWM1_HG pin of the wireless charging transmitter chip U7. The gate G of the MOS transistor Q5 is connected to the resistor R27. The other end of the resistor R27 is connected to the PWM1_LG pin of the wireless charging transmitter chip U7. The second end of resistor R15 is connected to the first end of capacitor C27 and the non-inverting input of operational amplifier U8. The second end of capacitor C27 is connected to the ground terminal of resistor R14 and the first end of resistor R16. The second end of resistor R16 is connected to the inverting input of operational amplifier U8 and the first end of resistor R19. The second end of resistor R19 is connected to the output terminal of operational amplifier U8 and the first end of capacitor C35. The second end of capacitor C35 is connected to the CODE_DET_I pin of wireless charging transmitter chip U7. The positive power supply terminal of the operational amplifier U8 is connected to capacitor C34 and resistor R23 respectively. The other end of capacitor C34 is grounded, and the other end of resistor R23 is connected to the HVCC pin of the wireless charging transmitter chip U7. 10.The smart cup with hidden LED display function according to claim 9, wherein, The COIL_V circuit is connected to the positive terminal of diode D3. The negative terminal of diode D3 is connected to the first end of resistor R20. The second end of resistor R20 is connected to the first end of capacitor C28, the first end of resistor R24, and the first end of capacitor C37. Resistor R21 is connected in parallel with capacitor C28. The second end of capacitor C28 is connected to the first end of capacitor C29. Resistor R22 is connected in parallel with capacitor C29. The second end of capacitor C29 is connected to the second end of resistor R24, the first end of capacitor C37, and the VCOIL_SENSE pin of wireless charging transmitter chip U7. The second end of capacitor C37 is connected to the CODE_DE_V pin of wireless charging transmitter chip U7.

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