A wireless mouse circuit

Abstract

This utility model discloses a wireless mouse circuit, which is disposed in a mouse. The wireless mouse circuit includes a main control module, a battery module, a sensor module, and an antenna module. The battery module is connected to the main control module to supply power to it. The main control module is connected to both the sensor module and the antenna module to supply power to them. It receives and processes the mouse's motion trajectory data collected by the sensor module and then transmits it to the antenna module. This wireless mouse circuit, by setting up a main control module that is connected to the battery module, sensor module, and antenna module to supply power to them, utilizes the main control module for power management, optimizes power consumption management, reduces overall power consumption, eliminates the need for an additional voltage conversion module, reduces the number of external components, simplifies the circuit connection structure, and reduces the space required for circuit device layout, thus reducing the overall size and weight of the mouse and making it more portable.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to a wireless mouse circuit. Background Technology

[0002] Traditional mice have many external components in their internal circuitry, resulting in complex circuit connections, large size, and heavy weight. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a wireless mouse circuit that reduces the number of peripheral components, simplifies the circuit connection structure, and reduces size and weight.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: providing a wireless mouse circuit, which is disposed in a mouse. The wireless mouse circuit includes a main control module, a battery module, a sensor module, and an antenna module. The battery module is connected to the main control module to supply power to the main control module. The main control module is connected to the sensor module and the antenna module respectively to supply power to the sensor module and the antenna module. After receiving and processing the mouse motion trajectory data collected by the sensor module, it transmits the data to the antenna module.

[0005] The further technical solution is as follows: the main control module includes a main control chip, and the wireless mouse circuit also includes a USB input module and a charging module. The USB input module is connected to the battery module through the charging module to charge the battery module. The USB input module is connected to the main control module to supply power to the main control module and transmit data to the main control module.

[0006] The further technical solution is as follows: the USB input module includes a USB interface and a USB insertion detection circuit. The bus voltage pin of the USB interface is connected to the bus voltage terminal of the main control chip via the fifteenth resistor. The USB insertion detection circuit includes a ninth resistor and an eleventh resistor connected in series. The first end of the ninth resistor serves as the input terminal of the USB insertion detection circuit and is connected to the bus voltage pin of the USB interface. The second end of the ninth resistor is connected to the first end of the eleventh resistor. The second end of the eleventh resistor is grounded. The output terminal of the USB insertion detection circuit is connected to the main control chip. The output terminal of the USB insertion detection circuit is electrically connected to the series node of the ninth resistor and the eleventh resistor.

[0007] The further technical solution is as follows: the positive data pin of the USB interface is connected to the main control module through a fourth resistor, and the negative data pin of the USB interface is connected to the main control module through a third resistor.

[0008] The further technical solution is as follows: the charging module includes a charging management chip, the input pin of the charging management chip is connected to the bus voltage pin of the USB interface, the bus voltage pin of the USB interface is connected to the charging status indicator pin of the charging management chip through the thirteenth resistor and the first light-emitting diode, the enable pin of the charging management chip is grounded through the twenty-fourth resistor, the bus voltage pin of the USB interface is connected to the thirty-second resistor and the twelfth resistor connected in series, the temperature detection pin of the charging management chip is connected to the thermistor of the battery module, the temperature detection pin of the charging management chip is electrically connected to the series node of the thirty-second resistor and the twelfth resistor, and the battery pin of the charging management chip is connected to the battery pack of the battery module.

[0009] The further technical solution is as follows: the battery module includes a power supply circuit and a battery pack. The power supply circuit is connected to the battery pack, and the battery pack is connected to the main control module through the power supply circuit. The power supply circuit includes a toggle switch, a seventh diode, a first switching transistor, and a third diode. The first pin of the toggle switch is connected to the battery pin of the charging management chip. The second pin of the toggle switch is a battery voltage pin for connection to the battery pack. The second pin of the toggle switch is connected to the cathode of the seventh diode. The anode of the seventh diode is connected to the power supply pin of the main control chip. The second pin of the toggle switch is connected to the main control chip through the first switching transistor. The bus voltage pin of the USB interface is connected to the control terminal of the first switching transistor. The bus voltage pin of the USB interface is connected to the anode of the third diode. The cathode of the third diode is connected to the main control chip. A sixth grounding resistor is electrically connected between the bus voltage pin of the USB interface and the control terminal of the first switching transistor.

[0010] The further technical solution is as follows: the main control module is connected to the battery module through a sampling circuit to detect the battery pack's charge level. The sampling circuit includes a seventh resistor, a tenth resistor, and a twenty-fourth capacitor. The seventh resistor and the tenth resistor are connected in series. The input terminal of the sampling circuit is connected to the battery pack. The output terminal of the sampling circuit is electrically connected to the series node of the seventh resistor and the tenth resistor. The twenty-fourth capacitor is connected in parallel with the tenth resistor.

[0011] The further technical solution is as follows: the antenna module includes a radio frequency (RF) circuit and an antenna. The RF circuit is connected to the antenna. The RF circuit includes a fifth inductor, a second inductor, a fortieth resistor, a forty-second resistor, and a third inductor connected in series. The first end of the fifth inductor serves as the input terminal of the RF circuit and is connected to the main control module. The second end of the fifth inductor is connected to the first end of the third inductor via the second inductor, the fortieth resistor, and the forty-second resistor. The second end of the third inductor serves as the output terminal of the RF circuit and is connected to the antenna.

[0012] The further technical solution is as follows: the wireless mouse circuit also includes an indicator light module. The main control module is connected to the indicator light module to supply power to the indicator light module and control the indicator light module to work according to the current state of the mouse. The indicator light module includes a 38th resistor and a second light-emitting diode. The first end of the 38th resistor is connected to the main control module as the input end of the indicator light module. The 38th resistor is connected to the anode of the second light-emitting diode, and the cathode of the second light-emitting diode is grounded.

[0013] The beneficial technical effects of this utility model are as follows: The wireless mouse circuit of this utility model sets up a main control module, which is connected to the battery module, sensor module and antenna module respectively to supply power to the sensor module and antenna module. The main control module performs power management, optimizes power consumption management, reduces overall operating power consumption, and eliminates the need for an additional voltage conversion module connected to the battery module. This reduces the number of peripheral components, the number of board-level components, simplifies the circuit connection structure, and reduces the space required for circuit component layout, which helps to reduce the overall size and weight of the mouse, making the mouse more portable. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the wireless mouse circuit provided in an embodiment of this utility model;

[0016] Figure 2 A circuit diagram of the main control module of the wireless mouse circuit provided in this embodiment of the utility model;

[0017] Figure 3 A circuit diagram of the USB input module of the wireless mouse circuit provided in this embodiment of the utility model;

[0018] Figure 4 A circuit diagram of the charging module of the wireless mouse circuit provided in this embodiment of the utility model;

[0019] Figure 5 A circuit diagram of the battery pack of the battery module in the wireless mouse circuit provided in this embodiment of the utility model;

[0020] Figure 6 A circuit diagram of the power supply circuit for the battery module of the wireless mouse circuit provided in this embodiment of the utility model;

[0021] Figure 7 A circuit diagram of the sampling circuit of the wireless mouse circuit provided in this embodiment of the utility model;

[0022] Figure 8 A circuit diagram of the sensor module of the wireless mouse circuit provided in this embodiment of the utility model;

[0023] Figure 9 A circuit diagram of the antenna module of the wireless mouse circuit provided in this embodiment of the utility model;

[0024] Figure 10 The circuit diagram of the indicator light module of the wireless mouse circuit provided in this embodiment of the utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, 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.

[0026] Please see Figures 1 to 10 , Figure 1 This is a schematic diagram of the wireless mouse circuit provided in an embodiment of the present invention. The wireless mouse circuit is disposed in the mouse and includes a main control module 11, a battery module 14, a sensor module 16, and an antenna module 17. The battery module 14 is connected to the main control module 11 to supply power to the main control module 11. The main control module 11 is connected to the sensor module 16 and the antenna module 17 to supply power to the sensor module 16 and the antenna module 17, respectively. After receiving and processing the mouse motion trajectory data collected by the sensor module 16, the main control module 11 transmits the data to the antenna module 17 so that the antenna module 17 can send the processed mouse motion trajectory information to the terminal device connected to the mouse wirelessly.

[0027] The terminal device can be an electronic device with a wireless communication module, such as a laptop, tablet, or desktop computer. The sensor module 16 is used to collect the mouse's motion trajectory data. The sensor module 16 communicates with the main control module 11 via the SPI protocol to transmit the collected mouse motion trajectory data to the main control module 11 in real time. The main control module 11 processes the motion trajectory data to obtain the mouse's motion trajectory information and sends it to the terminal device in a timely manner via the antenna module 17. Traditional mouse circuits use a voltage conversion module connected to the battery to power other modules inside the mouse, resulting in a large number of external components inside the mouse. The wireless mouse circuit incorporates a main control module 11, which is connected to the battery module 14, sensor module 16, and antenna module 17 to supply power to them. The main control module 11 manages power consumption, optimizes power management, and reduces overall power consumption. Furthermore, it eliminates the need for an additional voltage conversion module connected to the battery module 14, reducing the number of peripheral components, the overall number of board-level components, and simplifying the circuit connection structure. This reduces the space required for circuit component layout, contributing to a smaller overall size and weight of the mouse, making it more portable.

[0028] Combination Figure 1 and Figure 2 Preferably, the main control module 11 includes a main control chip U3A. The main control chip U3A integrates power management and features SIMO (Single Inductor Multiple Output) technology, enabling it to output different voltages to meet the power supply voltage requirements of different modules. The main control chip U3A can internally step down the voltage and output the corresponding operating voltage to the sensor module 16 and antenna module 17 to power their operation. This eliminates the need for an additional voltage conversion module, reducing external components and the space required for circuit layout. Furthermore, the main control chip U3A supports high-speed data transmission, eliminating the need for an external USB chip for data transmission processing, further reducing the need for external components and optimizing the circuit connection structure.

[0029] Continue to refer to Figure 1 Preferably, the wireless mouse circuit further includes a button module 18, which is connected to the main control module 11 and the mechanical buttons installed on the mouse. The button module 18 outputs corresponding operation signals to the main control module 11 based on the user's operation information on the mechanical buttons, so as to enable human-computer interaction of the mouse. The main control module 11 processes the obtained operation signals and sends them to the terminal device through the antenna module 17.

[0030] Specifically, in this embodiment, the wireless mouse circuit further includes a USB input module 12 and a charging module 13. The USB input module 12 is connected to the battery module 14 through the charging module 13 to charge the battery module 14. The USB input module 12 is also connected to the main control module 11 to supply power to the main control module 11 and transmit data to the main control module 11.

[0031] Combination Figures 1 to 3 Specifically, in this embodiment, the USB input module 12 includes a USB interface J5 and a USB insertion detection circuit. The bus voltage pin VBUS-C of the USB interface J5 is connected to the bus voltage terminal VBUS of the main control chip U3A via the fifteenth resistor R15 to supply power to the main control chip U3A. The USB insertion detection circuit includes a ninth resistor R9 and an eleventh resistor R11 connected in series. The first end of the ninth resistor R9 serves as the input terminal of the USB insertion detection circuit and is connected to the bus voltage pin VBUS-C of the USB interface J5. The second end of the ninth resistor R9 is connected to the first end of the eleventh resistor R11, and the second end of the eleventh resistor R11 is grounded. The output terminal of the USB insertion detection circuit is connected to the main control chip U3A and is electrically connected to the series node of the ninth resistor R9 and the eleventh resistor R11. The USB insertion detection circuit uses a voltage divider formed by resistors R9 and R11 connected in series. When an external device is inserted into the USB interface J2 of the USB input module 12 via a USB cable, the VBUS-C pin of the USB interface J5 of the USB input module 12 outputs a voltage of 5V. The output terminal USB_CHK of the USB insertion detection circuit outputs a high level to the main control chip U3A, enabling the main control chip U3A to recognize the presence of an external device inserted into the USB interface J5. Furthermore, the voltage output from the VBUS-C pin of the USB interface J5 of the USB input module 12 is transmitted to the VBUS pin of the main control chip U3A via resistor R15. The main control chip U3A then switches to power supply through the USB interface J5, thereby controlling the battery module 14 to stop supplying power. The external device can be a power bank, laptop, tablet, or desktop computer.

[0032] Preferably, the bus voltage pin VBUS of the USB interface J2 is connected to the second grounding capacitor C2, the bus voltage pin VBUS of the USB interface J2 is connected to the cathode of the fourth Zener diode D4, and the anode of the fourth Zener diode D4 is grounded.

[0033] Specifically, in this embodiment, the positive data pin DP of the USB interface J2 is connected to the main control module 11 through a fourth resistor R4, and the negative data pin DM of the USB interface is connected to the main control module 11 through a third resistor R3. This allows the USB input module 12 to be connected to the main control module 11 via a set of differential lines for communication and data transmission. The positive data pin DP of the USB interface J2 is connected to one end of the second transient voltage suppression diode D2, and the other end of the second transient voltage suppression diode D2 is grounded. The negative data pin DM of the USB interface J2 is connected to one end of the first transient voltage suppression diode D1, and the other end of the first transient voltage suppression diode D1 is grounded.

[0034] Reference Figures 1 to 4 Specifically, in this embodiment, the charging module 13 includes a charging management chip U6. The input pin IN of the charging management chip U6 is connected to the bus voltage pin VBUS-C of the USB interface J2. The bus voltage pin VBUS-C of the USB interface J2 is connected to the charging status indicator pin CHRG of the charging management chip U6 through the thirteenth resistor R13 and the first light-emitting diode LED1. When an external device is plugged into the USB interface J2, the output voltage of the bus voltage pin VBUS-C of the USB interface J2 activates the charging management chip U6 to work, and the first light-emitting diode LED1 indicates that the charging management chip U6 is in working state. The enable pin EN of the charging management chip U6 is grounded through the 24th resistor R24. The bus voltage pin VBUS-C of the USB interface J2 is connected to the 32nd resistor R32 and the 12th resistor R12 in series for voltage division. The temperature detection pin TS of the charging management chip U6 is connected to the thermistor NTC of the battery module 14. The temperature detection pin TS of the charging management chip U6 is electrically connected to the series node of the 32nd resistor R32 and the 12th resistor R12. The battery pin BAT of the charging management chip U6 is connected to the battery pack J6 of the battery module 14. The thermistor NTC of the battery module 14 is connected to the battery pack J6 to detect the temperature of the battery pack J6. The color of the first light-emitting diode LED1 can be white. The positive terminal voltage of the battery pack J6 of the battery module 14 is connected to the battery pin BAT of the charging management chip U6. The first end of the 12th resistor R12 is connected to the 32nd resistor R32, and the second end of the 12th resistor R12 is grounded. The bus voltage pin VBUS-C of the USB interface J2 is electrically connected to the input pin IN of the charging management chip U6, and the twenty-third grounding capacitor C23 is electrically connected to the battery pin BAT of the charging management chip U6, and the twenty-second grounding capacitor C22 is electrically connected to it.

[0035] Combination Figure 5 and Figure 6 Specifically, in this embodiment, the battery module 14 includes a power supply circuit and a battery pack J6. The power supply circuit is connected to the battery pack J6, and the battery pack J6 is connected to the main control module 11 through the power supply circuit to supply power to the main control module 11. The power supply circuit includes a toggle switch SW1, a seventh diode D7, a first switch Q1, and a third diode D3. The first pin of the toggle switch SW1 is connected to the battery pin BAT of the charging management chip U6. The second pin of the toggle switch SW1 is the battery voltage pin VBAT, which is connected to the battery pack J6 for inputting the battery voltage. The second pin of the toggle switch SW1 is connected to the cathode of the seventh diode D7. The anode of the seventh diode D7 is connected to the power supply pin VDD of the main control chip U3A, so the battery voltage is connected to the cathode of the seventh diode D7. The second pin of the toggle switch SW1 is connected to the main control chip U3A through the first switch Q1, so the battery voltage is connected to the main control chip U3A through the first switch Q1 to supply power to the main control chip U3A. The bus voltage pin VBUS-C of the USB interface J2 is connected to the control terminal of the first switching transistor Q1. The bus voltage pin VBUS-C of the USB interface J2 is also connected to the anode of the third diode D3. The cathode of the third diode D3 is connected to the main control chip U3A. A sixth grounding resistor R6 is electrically connected between the bus voltage pin VBUS-C of the USB interface J2 and the control terminal of the first switching transistor Q1. The seventh diode D7 can be used for fast discharge. The power supply pin VDD of the main control chip U3A is used to output a 1.8V power supply voltage to power the corresponding module. The power supply pin VDD of the main control chip U3A is connected to the thirty-first resistor R31. A twenty-fifth grounding capacitor C25 and a twenty-sixth grounding capacitor C26 are electrically connected between the power supply pin VDD of the main control chip U3A and the thirty-first resistor R31. The twenty-fifth grounding capacitor C25 and the twenty-sixth grounding capacitor C26 are connected in parallel.

[0036] Preferably, the third pin of the toggle switch SW1 is connected to the seventeenth grounding resistor R17. The first switching transistor Q1 is a PMOS transistor. The gate of the first switching transistor Q1 is connected to the bus voltage pin VBUS-C of the USB interface J2, the sixth grounding resistor R6, and the anode of the third diode D3. The drain of the first switching transistor Q1 is connected to the battery voltage pin VBAT of the toggle switch SW1 and the cathode of the seventh diode D7. The source of the first switching transistor Q1 is connected to the cathode of the third diode D3. The source of the first switching transistor Q1 is connected to the main control module 11 to supply power to the main control module 11. The source of the first switching transistor Q1 is connected to the high-voltage power supply pin VDDH of the main control chip U3A through the thirty-seventh resistor R37.

[0037] Combination Figure 7 Specifically, the main control module 11 is connected to the battery module 14 through a sampling circuit 15 to detect the charge level of the battery pack J6. The sampling circuit 15 includes a seventh resistor R7, a tenth resistor R10, and a twenty-fourth capacitor C24. The seventh resistor R7 and the tenth resistor R10 are connected in series for voltage division detection. The input terminal of the sampling circuit 15 is connected to the battery pack J6 to input the battery voltage. The input terminal of the sampling circuit 15 is connected to the first end of the seventh resistor R7, and the second end of the seventh resistor R7 is connected to the first end of the tenth resistor R10. The second end of the tenth resistor R10 is grounded. The output terminal of the sampling circuit 15 is electrically connected to the series node of the seventh resistor R7 and the tenth resistor R10. The output terminal of the sampling circuit 15 is connected to the main control module 11 to transmit the divided battery voltage to the main control chip U3A for processing. The main control chip U3A performs analog-to-digital conversion calculation on the received divided battery voltage and analyzes it to obtain the current charge level of the battery pack J6. The 24th capacitor C24 is connected in parallel with the 10th resistor R10. Then, the first terminal of the 24th capacitor C24 is connected to the second terminal of the 7th resistor R7, and the second terminal of the 24th capacitor C24 is grounded.

[0038] Combination Figure 8 Specifically, the sensor module 16 includes a sensor chip U2. The power supply terminal of the sensor chip U2 is connected to the sensor power supply terminal SENSOR_VDD_1V8 of the main control chip U3A. The sensor power supply terminal of the main control chip U3A can output a voltage of 1.8V to the sensor chip U2 for power supply.

[0039] Combination Figure 9Preferably, in this embodiment, the antenna module 17 includes a radio frequency (RF) circuit and an antenna. The RF circuit is connected to the antenna. The RF circuit includes a fifth inductor L5, a second inductor L2, a fortieth resistor R40, a forty-second resistor R42, and a third inductor L3 connected in series. The first terminal of the fifth inductor L5 serves as the input terminal RFIO of the RF circuit, connected to the main control module 11. The second terminal of the fifth inductor L5 is connected to the first terminal of the third inductor L3 via the second inductor L2, the fortieth resistor R40, and the forty-second resistor R42. The second terminal of the third inductor L3 serves as the output terminal of the RF circuit, connected to the antenna. The transmit / receive frequency band of the antenna in the antenna module 17 is 2.4 GHz. The series connection of the fifth inductor L5 and the second inductor L2 can be electrically connected to a seventh grounding capacitor C7. The series connection of the second inductor L2 and the fortieth resistor R40 can be electrically connected to a fifth grounding capacitor C5. The series connection of the fortieth resistor R40 and the forty-second resistor R42 can be electrically connected to a third grounding capacitor C3. The series connection of the forty-second resistor R42 and the third inductor L3 can be electrically connected to a fourth grounding capacitor C4. The second end of the third inductor L3 is electrically connected to the antenna with a sixth grounding capacitor C6.

[0040] Combination Figure 10 Specifically, the wireless mouse circuit also includes an indicator light module 18. The main control module 11 is connected to the indicator light module 18 to supply power to the indicator light module 18 and control the indicator light module 18 to operate according to the current state of the mouse. The indicator light module 18 includes a 38th resistor R38 and a second light-emitting diode LED2. The first end of the 38th resistor R38 serves as the input terminal of the indicator light module 18 and is connected to the status indicator control terminal LED_STATE of the main control module 11. The 38th resistor R38 is connected to the anode of the second light-emitting diode LED2, and the cathode of the second light-emitting diode LED2 is grounded. The second light-emitting diode LED2 can emit red light. The current state of the mouse can include normal working state, charging state, and low battery state, where low battery refers to low power. The main control module 11 can obtain the current power level of the battery module 14 by sampling and analyzing the voltage divider voltage through the sampling circuit 15. The main control module 11 can determine whether the current power level of the battery module 14 is in a low battery state according to a preset low battery judgment standard value. If so, it can supply power to the indicator light module 18 and control the second light-emitting diode LED2 to operate.

[0041] In summary, the wireless mouse circuit of this utility model, by setting up a main control module, which is connected to the battery module, sensor module and antenna module respectively, to supply power to the sensor module and antenna module, utilizes the main control module for power management, optimizes power consumption management, reduces overall operating power consumption, and eliminates the need for an additional voltage conversion module connected to the battery module, reducing the number of peripheral components, reducing the number of board-level components, simplifying the circuit connection structure, and reducing the space required for circuit component layout, which helps to reduce the overall size and weight of the mouse, making the mouse more portable.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A wireless mouse circuit, characterized in that, The wireless mouse circuit, housed within the mouse, includes a main control module, a battery module, a sensor module, and an antenna module. The battery module is connected to the main control module to supply power to it. The main control module is connected to both the sensor module and the antenna module to supply power to them. It receives and processes the mouse's motion trajectory data collected by the sensor module and then transmits it to the antenna module.

2. The wireless mouse circuit according to claim 1, characterized in that, The main control module includes a main control chip, and the wireless mouse circuit also includes a USB input module and a charging module. The USB input module is connected to the battery module through the charging module to charge the battery module. The USB input module is also connected to the main control module to supply power to the main control module and transmit data to the main control module.

3. The wireless mouse circuit according to claim 2, characterized in that, The USB input module includes a USB interface and a USB insertion detection circuit. The bus voltage pin of the USB interface is connected to the bus voltage terminal of the main control chip via the fifteenth resistor. The USB insertion detection circuit includes a ninth resistor and an eleventh resistor connected in series. The first end of the ninth resistor serves as the input terminal of the USB insertion detection circuit and is connected to the bus voltage pin of the USB interface. The second end of the ninth resistor is connected to the first end of the eleventh resistor, and the second end of the eleventh resistor is grounded. The output terminal of the USB insertion detection circuit is connected to the main control chip and is electrically connected to the series node of the ninth and eleventh resistors.

4. The wireless mouse circuit according to claim 3, characterized in that, The positive data pin of the USB interface is connected to the main control module through a fourth resistor, and the negative data pin of the USB interface is connected to the main control module through a third resistor.

5. The wireless mouse circuit according to claim 3, characterized in that, The charging module includes a charging management chip. The input pin of the charging management chip is connected to the bus voltage pin of the USB interface. The bus voltage pin of the USB interface is connected to the charging status indicator pin of the charging management chip through a thirteenth resistor and a first light-emitting diode. The enable pin of the charging management chip is grounded through a twenty-fourth resistor. The bus voltage pin of the USB interface is connected to a thirty-second resistor and a twelfth resistor connected in series. The temperature detection pin of the charging management chip is connected to the thermistor of the battery module. The temperature detection pin of the charging management chip is electrically connected to the series node of the thirty-second resistor and the twelfth resistor. The battery pin of the charging management chip is connected to the battery pack of the battery module.

6. The wireless mouse circuit according to claim 5, characterized in that, The battery module includes a power supply circuit and a battery pack. The power supply circuit is connected to the battery pack, and the battery pack is connected to the main control module through the power supply circuit. The power supply circuit includes a toggle switch, a seventh diode, a first switching transistor, and a third diode. The first pin of the toggle switch is connected to the battery pin of the charging management chip. The second pin of the toggle switch is a battery voltage pin connected to the battery pack. The second pin of the toggle switch is connected to the cathode of the seventh diode, and the anode of the seventh diode is connected to the power supply pin of the main control chip. The second pin of the toggle switch is connected to the main control chip through the first switching transistor. The bus voltage pin of the USB interface is connected to the control terminal of the first switching transistor. The bus voltage pin of the USB interface is connected to the anode of the third diode, and the cathode of the third diode is connected to the main control chip. A sixth grounding resistor is electrically connected between the bus voltage pin of the USB interface and the control terminal of the first switching transistor.

7. The wireless mouse circuit according to claim 6, characterized in that, The main control module is connected to the battery module through a sampling circuit to detect the battery pack's charge level. The sampling circuit includes a seventh resistor, a tenth resistor, and a twenty-fourth capacitor. The seventh resistor and the tenth resistor are connected in series. The input terminal of the sampling circuit is connected to the battery pack, and the output terminal of the sampling circuit is electrically connected to the series node of the seventh resistor and the tenth resistor. The twenty-fourth capacitor is connected in parallel with the tenth resistor.

8. The wireless mouse circuit according to claim 1, characterized in that, The antenna module includes a radio frequency (RF) circuit and an antenna. The RF circuit is connected to the antenna. The RF circuit includes a fifth inductor, a second inductor, a fortieth resistor, a forty-second resistor, and a third inductor connected in series. The first end of the fifth inductor serves as the input terminal of the RF circuit and is connected to the main control module. The second end of the fifth inductor is connected to the first end of the third inductor via the second inductor, the fortieth resistor, and the forty-second resistor. The second end of the third inductor serves as the output terminal of the RF circuit and is connected to the antenna.

9. The wireless mouse circuit according to claim 1, characterized in that, The wireless mouse circuit also includes an indicator light module. The main control module is connected to the indicator light module to supply power to the indicator light module and control the indicator light module to work according to the current state of the mouse. The indicator light module includes a 38th resistor and a second light-emitting diode. The first end of the 38th resistor is connected to the main control module as the input terminal of the indicator light module. The 38th resistor is connected to the anode of the second light-emitting diode, and the cathode of the second light-emitting diode is grounded.

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