Intelligent cup with hidden LED display function

Abstract

The invention discloses an intelligent cup with a hidden LED display function. The intelligent cup comprises a cup body and a cup base assembly, and a hidden LED display screen is arranged on the side face of the cup body. The LED display screen is of a hidden installation structure laterally fixed to the clamping groove of the cup body and comprises an insulating heat-insulating layer, LED screens distributed in an array mode, a shading baffle and a light-transmitting baffle. The wireless charging module is packaged at the cup bottom and comprises a PCB with a battery pack, an insulating layer, a magnetic sheet and a receiving end charging coil. The control circuit comprises a main control module, a switching circuit, a full-bridge driving circuit, a temperature measuring module and an LED array. The main control module is provided with an MCU; the switching circuit switches a power supply source according to whether an external power supply exists or not, and charging is considered; the full-bridge driving circuit is connected with the power interface and the charging module; the temperature measuring module detects the temperature of the cup body through the NTC thermistor. According to the invention, appearance and functions are combined, information such as temperature can be displayed, flexible power supply and wireless charging are supported, and user experience is improved.

Description

Technical Field

[0001] The present invention relates to a cup, and in particular to a smart cup with a hidden LED display function. Background Art

[0002] Cups are an indispensable part of everyday life. Traditional cups have a limited function, serving only as containers for liquids. With the advancement of technology, smart cups have emerged that can perform functions such as temperature detection. However, most of these smart cups feature external displays, which not only affects the overall aesthetics of the cup but also makes the display susceptible to damage from external impacts and friction.

[0003] Existing smart cups also have shortcomings in their power supply. Some rely solely on internal batteries, requiring frequent battery removal and replacement or wired charging, making them inconvenient to use. Furthermore, in terms of power management, they lack intelligent power switching mechanisms, preventing them from flexibly switching power sources based on the availability of external power input, impacting the cups' battery life and ease of use.

[0004] Therefore, it is of great practical significance to develop a smart cup with hidden LED display function, flexible power supply mode and intelligent power management. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a smart cup with a hidden LED display function, which solves the problems of traditional cups having a single function and the external display screen of existing smart cups affecting their appearance, realizes the organic combination of the cup's appearance and function, and enhances the user experience.

[0006] To solve the above technical problems, the present invention is implemented through the following solutions: A smart cup with a hidden LED display function of the present invention includes a cup body and a cup base assembly connected to the lower end of the cup body, and an LED display screen is provided on the side of the cup body, and the LED display screen is a hidden installation structure;

[0007] The hidden installation structure includes a slot provided 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 fixed to the slot on one side;

[0010] An LED screen mounted on the outer surface of the insulating layer, wherein the light sources of the LED screen are distributed in an array;

[0011] A light shielding baffle is provided to separate the array-distributed LED screen into multiple groups of LED light-emitting units, and a light-transmitting baffle is encapsulated on the light-emitting surface of the LED light-emitting units and forms 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 further includes a control circuit for controlling the operation of the LED display screen, the control circuit including:

[0014] Main control module, with MCU;

[0015] a switching circuit electrically connected to the power interface, and switching to the external power supply to supply power to the LED display screen when it is determined that the power interface is charged by an external power source, while the external power source charges the cup power source. The switching circuit also switches to the cup power source to supply power to the LED display screen when it is determined that the power interface has no external power input;

[0016] Full-bridge drive circuit, the power input end is connected to the power interface, and its multiple signal output ends are connected to the charging module;

[0017] a temperature measuring module electrically connected to the MCU, wherein a temperature sensor of the temperature measuring module is disposed on the cup holder assembly and contacts the bottom surface of the cup body;

[0018] The LED array is divided into multiple LED line arrays, each LED line array is composed of a lighting circuit composed of multiple LED lamp beads connected in series, and 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 lamp beads are RGB lamp beads.

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

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

[0024] A first end of the NTC thermistor R8 is further connected to an RC filter circuit, and the other end of the RC filter circuit is grounded;

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

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

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

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

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

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

[0031] Furthermore, the full-bridge driving circuit includes an operational amplifier U8, a plurality of capacitors, a plurality of resistors and a plurality of MOS transistors;

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

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

[0034] The other end of the capacitor C25 is respectively 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, and the second end of the resistor R18 is connected to the PWM2_LG pin of the wireless charging transmitter chip U7;

[0036] The second end of the filter circuit outputs a TP4 node, which corresponds to a TP5 node. The receiving end charging coil is connected between the TP4 node and the TP5 node. The TP5 node is connected to a capacitor C36, the other end of which is connected to the COIL_V circuit. The TP5 node is also connected to the LX1 pin of the 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, and 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 the resistor R15 is connected to the first end of the capacitor C27 and the non-inverting input terminal of the operational amplifier U8, respectively. The second end of the capacitor C27 is connected to the ground terminal of the resistor R14 and the first end of the resistor R16. The second end of the resistor R16 is connected to the inverting input terminal of the operational amplifier U8 and the first end of the resistor R19. The second end of the resistor R19 is connected to the output terminal of the operational amplifier U8 and the first end of the capacitor C35. The second end of the capacitor C35 is connected to the CODE_DET_I pin of the wireless charging transmitter chip U7.

[0039] The positive power supply terminal of the operational amplifier U8 is connected to the capacitor C34 and the resistor R23 respectively. The other end of the capacitor C34 is grounded, and the other end of the 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 anode of the diode D3, the cathode of the diode D3 is connected to the first end of the resistor R20, the second end of the resistor R20 is connected to the first end of the capacitor C28, the first end of the resistor R24, and the first end of the capacitor C37, and the capacitor C28 is connected in parallel with the resistor R21;

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

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The LED display screen of the present invention adopts a hidden installation structure. When it is 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 that the display screen is easily damaged due to being placed externally.

[0044] 2. The present invention integrates a temperature detection function. The temperature of the liquid in the cup can be detected in real time through the temperature measurement module and displayed on the LED display screen, making it convenient for users to understand the liquid temperature and avoid scalding.

[0045] 3. The present invention is provided 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 and charges the cup power supply at the same time. When there is no external power supply, the cup power supply is used to power the cup, thereby improving the endurance and convenience of the cup.

[0046] 4. The present invention adopts a wireless charging module and cooperates with a full-bridge drive circuit to realize the wireless charging function, eliminating the need for frequent plugging and unplugging of charging cables, thereby improving the user experience.

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

[0048] 6. The main control module of the present invention adopts the ESP32C3 processor, which has stable performance and can effectively control the coordinated work of each module to ensure the stable operation of the smart cup.

[0049] 7. The temperature sensor of the present invention adopts NTC thermistor and cooperates with RC filter circuit to improve the accuracy and stability of temperature detection.

[0050] 8. The power interface of the present invention adopts Type-C interface, which has the advantages of strong versatility and fast charging speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a three-dimensional diagram of the smart cup of the present invention.

[0052] Figure 2 This is an exploded view of the smart cup of the present invention.

[0053] Figure 3 This is a structural diagram of the LED display screen of the present invention.

[0054] Figure 4 This is a diagram of the charging status of the smart cup of the present invention.

[0055] Figure 5 This is a circuit diagram of the main control module of the present invention.

[0056] Figure 6 This is a circuit diagram of the temperature measurement module of the present invention.

[0057] Figure 7-8 After connection, the full-bridge driving circuit diagram of the present invention is formed.

[0058] Figure 9 This is the circuit diagram of the colorful LED array of the present invention.

[0059] Figure 10 for Figure 9 Thumbnail image of the LED array.

[0060] Figure 11 This is the switching circuit diagram of the present invention.

[0061] Figure 12 This is the circuit diagram of the wireless charging transmitter chip of the present invention.

[0062] Figure 13 This is the circuit diagram of the wireless charging receiving end chip module of the present invention.

[0063] Figure 14 This is the Type-c interface circuit diagram of the present invention.

[0064] Figure 15 This is the circuit diagram of the touch button of the present invention.

[0065] Figure 16 This is a circuit diagram of an LED display screen composed of an RGB circuit of the present invention.

[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] Markings in the figure: cup body 1, cup handle 2, LED display 3, touch button 4, cup bottom 5, PCB 6, insulation layer 7, magnetic sheet 8, receiving end charging coil 9, charging base 10, transmitting end charging coil 1001, main control module 11, temperature measurement module 12, full-bridge drive circuit 13, post-stage circuit 14, LED array 15, LED array abbreviation Figure 15, switching circuit 16, wireless charging transmitter chip U7 circuit 17, wireless charging receiver chip module 18, Type-c interface circuit 19, touch button circuit 20, insulating and heat insulation layer 31, LED screen 32, light-transmitting baffle 33, light-shielding baffle 34, card slot 101. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the scope of protection of the present invention. Obviously, the embodiments described in the present invention are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0070] In addition, the technical features involved in the different embodiments of the present invention 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 the present invention is as follows:

[0072] Please refer to the attached Figure 1-15 The present invention provides a smart cup with a hidden LED display function, comprising a cup body 1 and a cup base assembly connected to the lower end of the cup body 1. An LED display screen 3 is provided on the side of the cup body 1, and the LED display screen 3 is a hidden installation structure.

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

[0074] The LED display screen 3 includes:

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

[0076] An LED screen 32 is mounted on the outer surface of the insulating layer 31, and the light sources of the LED screen 32 are distributed in an array;

[0077] A light shielding baffle 34 is used to separate the array-distributed LED screen 32 into multiple groups of LED light-emitting units, 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;

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

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

[0080] The main control module 11 has an MCU, which uses an ESP32C3 processor; the processor has a built-in onboard antenna, integrated 2.4GHz Wi-Fi and low-power Bluetooth ( 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 LED PWM channels, 3 DMA channels, 2 serial ports, and two 12-bit SAR analog / digital converters. Conventional connections: NTC (temperature detection analog signal input), KEY (touch key signal input), EN (power management chip trigger output), INSEL (receive power / charging indication signal) (mandatory). Magic color screen port: DIN (magic color screen signal output). RGB screen: SIN and SCK cascade control of 4 LED driver chips, 74CM (shift register clock line), 74CS (storage register clock line), 74IN1 and 74IN2 (shift register signal input). The two shift register clock lines are multiplexed, and the data lines are not multiplexed.

[0081] The switching circuit 16 is electrically connected to the power interface. When it is determined that the power interface is charged by an external power source, the switching circuit 16 switches to the external power source to supply power to the LED display 3. At the same time, the external power source charges the cup power source. When it is determined that the power interface is not charged by an external power source, the switching circuit switches to the cup power source to supply power to the LED display 3.

[0082] The full-bridge drive circuit 13 has a power supply input terminal connected to the power interface and multiple signal output terminals connected to the charging module; the full-bridge drive circuit 13 includes a subsequent post-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 disposed in the cup holder assembly and contacts the bottom surface of the cup body 1;

[0084] The LED array 15 is divided into a plurality of LED line arrays. Each LED line array is composed of a plurality of LED lamp beads connected in series to form a lighting circuit. The LED array 15 is controlled by the MCU.

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

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

[0087] The LED lamp beads are RGB lamp beads.

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

[0089] A first end of the NTC thermistor R8 is further connected to an RC filter circuit, and the other end of the RC filter circuit is grounded;

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

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

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

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

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

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

[0096] The full-bridge driving circuit 13 includes an operational amplifier U8, a plurality of capacitors, a plurality of resistors and a plurality of MOS transistors;

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

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

[0099] The other end of the capacitor C25 is respectively 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, and the second end of the resistor R18 is connected to the PWM2_LG pin of the wireless charging transmitter chip U7;

[0101] The second end of the filter circuit outputs a TP4 node, which corresponds to a TP5 node. The receiving end charging coil 9 is connected between the TP4 node and the TP5 node. The TP5 node is connected to a capacitor C36, and the other end of the capacitor C36 is connected to the COIL_V circuit. The TP5 node is also connected to the LX1 pin of the 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, and 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 the resistor R15 is connected to the first end of the capacitor C27 and the non-inverting input terminal of the operational amplifier U8, respectively. The second end of the capacitor C27 is connected to the ground terminal of the resistor R14 and the first end of the resistor R16. The second end of the resistor R16 is connected to the inverting input terminal of the operational amplifier U8 and the first end of the resistor R19. The second end of the resistor R19 is connected to the output terminal of the operational amplifier U8 and the first end of the capacitor C35. The second end of the capacitor C35 is connected to the CODE_DET_I pin of the wireless charging transmitter chip U7.

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

[0105] The COIL_V circuit is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the first end of the resistor R20, the second end of the resistor R20 is connected to the first end of the capacitor C28, the first end of the resistor R24, and the first end of the capacitor C37, and the capacitor C28 is connected in parallel with the resistor R21;

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

[0107] The MCU of the present invention is also connected to a touch key circuit 20 , which controls the switching of the LED display screen 3 .

[0108] The circuit system of the smart cup of the present invention uses an ESP32C3 32-bit RISC-V single-core MCU 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 respectively connected to various functional modules. On the one hand, it is connected to the temperature measurement module composed of NTC thermistor R8 (the NTC pin is connected to the temperature detection analog signal, the first end is connected to the RC filter circuit ground, and the second end is connected to the power supply VCC) to obtain real-time temperature information of the bottom surface of the cup. On the other hand, it is connected to the touch button circuit to receive switch control signals. At the same time, the LED display is controlled through the color screen port (DIN signal output) or RGB screen interface. The RGB circuit uses the CAT4016Y-T2 driver chip and 74HC595 shift register to drive the LED array composed of RGB lamp beads (divided into multiple series linear arrays).

[0109] In the power management part, the switching circuit includes a VBAT interface, two diodes, a PMOS tube and resistor-capacitor components. The external power supply is detected through the VBUS pin of the Type-C interface: when there is an external power supply, the VOUT output circuit is powered through the diode U18 (and the cup power supply is charged at the same time), and the PMOS tube is controlled to be cut off through the resistor voltage divider; when there is no external power supply, the PMOS tube is turned on, and the cup power supply is powered through the diode U19 to ensure that the LED display continues to work.

[0110] The charging system supports both wired and wireless charging methods. Wired charging is achieved through the Type-C interface. In the wireless charging module, the cup-bottom-packaged receiver includes a PCB with a battery pack, an insulating layer, a magnetic plate, and a receiving-end charging coil (electrically connected to the PCB). It works in conjunction with the transmitter coil of the external charging station. The transmitter uses the IP6808 chip, and the receiver uses the IP6832 chip. The full-bridge drive circuit connects to the Type-C interface's VBRIDGE circuit and includes an operational amplifier U8, multiple capacitors (forming a filter circuit), resistors, and MOS transistors. The MOS transistors are driven by PWM control signals from the wireless charging transmitter chip to achieve energy transmission from the charging coil. Simultaneously, components such as the operational amplifier form a detection circuit that feeds back charging status signals to the transmitter chip.

[0111] In the overall circuit, after the main control module receives the temperature signal, it 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 full-bridge drive circuit ensure the 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 the present invention has two structures, one of which is Figure 9 The colorful LED array circuit diagram is Figure 16 The RGB circuit uses the CAT4016Y-T2 LED driver chip. The RGB circuit also features a 74HC595 shift register chip with serial input and parallel output.

[0114] When the smart cup of the present invention is in use, when the cup body 1 is filled with liquid, the temperature measurement module 12 detects the liquid's temperature and transmits this 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 3. When charging is needed, the cup can be placed on a wireless charger for wireless charging, or wired charging can be performed via the Type-C port. During charging, a switching circuit automatically switches the power source to ensure the normal operation of the LED display 3.

[0115] In summary, the LED display screen of the present invention adopts a hidden installation structure. When it is 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 that the display screen is easily damaged due to being placed externally.

[0116] The present invention integrates a temperature detection function. The temperature of the liquid in the cup can be detected in real time through the temperature measurement module and displayed on the LED display screen, so that users can understand the liquid temperature and avoid scalding.

[0117] The present invention is provided with a switching circuit, which can flexibly switch the power supply source according to whether there is an external power supply input. When there is an external power supply, the external power supply is used to power the LED display and charge the cup power supply at the same time. When there is no external power supply, the cup power supply is used to power the cup, thereby improving the endurance and convenience of the cup.

[0118] The present invention adopts a wireless charging module in conjunction with a full-bridge drive circuit to achieve a wireless charging function, eliminating the need for frequent plugging and unplugging of charging cables, thereby improving the user experience.

[0119] The LED array of the present invention adopts RGB lamp beads and is divided into multiple LED line arrays, which can display rich colors and information to meet the different display needs of users.

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

[0121] The temperature sensor of the present invention adopts an NTC thermistor and cooperates with an RC filter circuit to improve the accuracy and stability of temperature detection.

[0122] The power interface of the present invention 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 invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A smart cup with a hidden LED display function, comprising a cup body (1) and a cup base assembly connected to the lower end of the cup body (1), characterized in that: An LED display screen (3) is provided on the side of the cup body (1), and the LED display screen (3) is a hidden installation structure; The hidden installation structure comprises a slot (101) provided 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) comprises: An insulating and heat-insulating layer (31) fixed to the slot (101); An LED screen (32) mounted on the outer surface of the insulating and heat-insulating layer (31), wherein the light sources of the LED screen (32) are distributed in an array; A light shielding baffle (34) is provided to separate the array-distributed LED screen (32) into a plurality of groups of LED light-emitting units, 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 further comprises a control circuit for controlling the operation of the LED display screen (3), the control circuit comprising: A main control module (11) having an MCU; A switching circuit is electrically connected to the power interface. When it is determined that the power interface is charged by an external power source, the switching circuit switches to the external power source to supply power to the LED display (3). At the same time, the external power source charges the cup power source. When it is determined that the power interface has no external power source input, the switching circuit switches to the cup power source to supply power to the LED display (3). A full-bridge drive circuit (13), wherein the power supply input terminal is connected to the power interface and the plurality of signal output terminals are connected to the charging module; a temperature measurement module (12) electrically connected to the MCU, wherein a temperature sensor of the temperature measurement module (12) is disposed on the cup holder assembly and contacts the bottom surface of the cup body (1); An LED array (15) is divided into a plurality of LED line arrays, each LED line array comprises a plurality of LED lamp beads connected in series to form a lighting circuit, and the LED array (15) is controlled by the MCU.

2. The smart cup with hidden LED display function according to claim 1, characterized in that: The charging module is a wireless charging module.

3. The smart cup with hidden LED display function according to claim 2, characterized in that: The cup base assembly comprises a cup bottom (5), the wireless charging module is encapsulated in the cup bottom (5), and comprises 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, wherein the receiving end charging coil (9) is electrically connected to the PCB (6).

4. The smart cup with hidden LED display function according to claim 1, characterized in that: The LED lamp beads are RGB lamp 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, characterized in that: The temperature sensor is an NTC thermistor R8, and a first end of the NTC thermistor R8 is connected to the NTC pin of the MCU; A first end of the NTC thermistor R8 is further connected to an RC filter circuit, and the other end of the RC filter circuit is grounded; The second end of the NTC thermistor R1 is connected to the power supply VCC.

7. The smart cup with hidden LED display function according to claim 1, characterized in that: The switching circuit includes a VBAT interface, a diode U18, a diode U19, a PMOS tube Q6, a capacitor C42, a resistor R29 and a resistor R30; The GND of the VBAT interface is grounded, and its VCC pin is respectively connected to the anode of the diode U19, the first end of the capacitor C42, and the drain D of the PMOS tube Q6. The second end of the capacitor C42 is grounded. The cathode of the diode U19 is connected to the source S of the PMOS tube Q6, the cathode of the diode U18 and the VOUT output circuit respectively, and the anode of the diode U18 is connected to the VBUS pin of the power interface; The gate G of the PMOS transistor Q6 is connected to a resistor R29 , the other end of the resistor R29 is connected to one end of a resistor R30 and the VBUS pin of the power interface, and the other end of the 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 according to claim 8, characterized in that: The full-bridge driving circuit (13) includes an operational amplifier U8, a plurality of capacitors, a plurality of resistors and a plurality of MOS transistors; The full-bridge drive circuit (13) is connected to a VBRIDGE circuit of the Type-C interface, and the VBRIDGE circuit is respectively connected to a first end of a capacitor C25, a drain D of a MOS transistor Q2, a source S of a MOS transistor Q4, and a first end of a capacitor C40, wherein the capacitor C25 is connected in parallel with a capacitor C26, and the capacitor C40 is connected in parallel with a capacitor C41; The full-bridge drive circuit (13) is provided with a filter circuit consisting of four capacitors connected in parallel and an operational amplifier U8; The other end of the capacitor C25 is respectively 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, and 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, and 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 a TP4 node, the TP4 node corresponds to a TP5 node, and a receiving end charging coil (9) is connected between the TP4 node and the TP5 node, wherein the TP5 node is connected to a capacitor C36, the other end of the capacitor C36 is connected to the COIL_V circuit, and the TP5 node is also connected to the LX1 pin of the wireless charging transmitting end 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, and 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 the resistor R15 is connected to the first end of the capacitor C27 and the non-inverting input terminal of the operational amplifier U8, respectively. The second end of the capacitor C27 is connected to the ground terminal of the resistor R14 and the first end of the resistor R16. The second end of the resistor R16 is connected to the inverting input terminal of the operational amplifier U8 and the first end of the resistor R19. The second end of the resistor R19 is connected to the output terminal of the operational amplifier U8 and the first end of the capacitor C35. The second end of the capacitor C35 is connected to the CODE_DET_I pin of the wireless charging transmitter chip U7. The positive power supply terminal of the operational amplifier U8 is connected to the capacitor C34 and the resistor R23 respectively. The other end of the capacitor C34 is grounded, and the other end of the 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, characterized in that: The COIL_V circuit is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the first end of the resistor R20, the second end of the resistor R20 is connected to the first end of the capacitor C28, the first end of the resistor R24, and the first end of the capacitor C37, and the capacitor C28 is connected in parallel with the resistor R21; The second end of the capacitor C28 is connected to the first end of the capacitor C29, and the capacitor C29 is connected in parallel with the resistor R22. The second end of the capacitor C29 is connected to the second end of the resistor R24, the first end of the capacitor C37 and the VCOIL_SENSE pin of the wireless charging transmitter chip U7. The second end of the capacitor C37 is connected to the CODE_DE_V pin of the wireless charging transmitter chip U7.

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