A tracking charging device for headphones

Abstract

This utility model discloses a tracking charging device for headphones, including a charging case with a charging cavity in the center of the top of the charging case. The device uses two voltage detection modules to monitor the voltage of the two headphones in real time and transmits the monitored data to the MCU control panel. It compares its own battery voltage with the voltage of the headphones. If the charging case's battery voltage is greater than or equal to the headphones' battery voltage, the power management chip directly charges the headphones using the charging case's current battery voltage. If the charging case's battery voltage is less than or equal to the headphones' battery voltage, the power management chip increases the voltage by 0.1V based on the headphones' voltage using a boost circuit. This avoids excessive energy loss during the boost process, thereby improving the utilization rate of the charging case's power and increasing charging efficiency and overall battery life.

Description

Technical Field

[0001] This utility model relates to the field of headphone charging devices, specifically a headphone tracking charging device. Background Technology

[0002] The earphone charging case, also known as a charging cradle, is an important accessory for Bluetooth earphones. Its main purpose is to provide power to the earphones and store them. It has a built-in battery, and when the earphones are placed in the case, they automatically begin charging to ensure their battery life. Currently, the linear power supply charging efficiency of existing earphone products on the market is generally relatively low, typically only 50% to 70%. The remaining energy is converted into heat and lost internally, resulting in low power utilization and short battery life.

[0003] To address the aforementioned issues, a tracking charging device for headphones is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tracking charging device for headphones, in order to address the aforementioned deficiencies in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a tracking charging device for headphones is provided, including a charging case. A charging cavity is opened in the middle of the top of the charging case. Headphone bodies are fitted inside the two charging cavities. A through groove is opened in the middle of the bottom of the inner wall of each of the two charging cavities. A placement groove is opened at the bottom between the two through grooves. An MCU control panel is fixedly installed inside the placement groove. A power management chip and a boost circuit are provided in the middle of the top of the MCU control panel. A charging head and a voltage detection module are fixedly installed on both sides of the top of the MCU control panel. The two charging heads and the two voltage detection modules are respectively arranged corresponding to the two headphone bodies. A battery cavity is opened inside the charging case. A battery is fixedly installed inside the battery cavity. A power monitoring module is fixedly installed on one side of the battery. A sealing cover is hinged to the outer side of the top of the charging case.

[0006] Two voltage detection modules monitor the voltage of the two earbuds in real time and transmit the monitored data to the MCU control panel. The charging case's battery voltage is compared with the earbud voltage. If the charging case's battery voltage is greater than or equal to the earbud battery voltage, the power management chip will directly charge the earbuds using the charging case's current battery voltage. If the charging case's battery voltage is less than or equal to the earbud battery voltage, the power management chip will boost the voltage by 0.1V based on the earbud voltage using a boost circuit. This avoids excessive energy loss during the boost process, thereby improving the utilization rate of the charging case's power and increasing charging efficiency and overall battery life.

[0007] A preferred embodiment is that two mounting cavities are provided in the middle of the bottom end of the sealing cover, and the two mounting cavities are respectively provided corresponding to the two earphone bodies. The two mounting cavities facilitate the installation of the two earphone bodies.

[0008] A preferred embodiment is that the bottom of the sealing cover has two second mounting grooves on both sides, and a second magnetic block is fixedly installed inside each of the two second mounting grooves. The top of the charging box has two first mounting grooves on both sides, and a first magnetic block is fixedly installed inside each of the two first mounting grooves. The two first magnetic blocks are respectively configured to correspond with the two second magnetic blocks. The cooperation between the two first magnetic blocks and the two second magnetic blocks makes it easier for the sealing cover to be fixed on the charging box, thus preventing the sealing cover from opening automatically during carrying.

[0009] A preferred embodiment is that support rods are fixedly installed on both sides of the bottom of the inner walls of the two charging chambers, and a first magnetic ring is fixedly installed on the top of the two support rods located on the same side. A second magnetic ring is fixedly installed at the bottom of the two earphone bodies. The two second magnetic rings are respectively configured to correspond to the two first magnetic rings. The cooperation between the two second magnetic rings and the two first magnetic rings facilitates the limiting of the two earphone bodies and prevents the earphone bodies from becoming loose during charging.

[0010] A preferred embodiment is that the bottom of the charging box has a TYPE-C charging port, which facilitates the charging of the battery.

[0011] In a preferred embodiment, the two through slots are respectively configured to correspond to the two charging heads and the two voltage detection modules, thereby facilitating the operation of the two charging heads.

[0012] A preferred embodiment is that an indicator light is fixedly installed on the front of the charging box, which can be used to indicate the working status and battery level of the charging box.

[0013] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model uses two voltage detection modules to monitor the voltage of the two earphone bodies in real time, and transmits the monitored data to the MCU control panel. It compares its own battery voltage with the voltage of the earphone bodies. If the battery voltage of the charging case is greater than or equal to the battery voltage of the earphones, the power management chip will directly charge the earphone bodies using the current battery voltage of the charging case. If the battery voltage of the charging case is less than or equal to the battery voltage of the earphones, the power management chip will increase the voltage by 0.1V based on the voltage of the earphone bodies through a boost circuit to charge the earphone bodies. This can avoid excessive energy loss during the boosting process, thereby improving the utilization rate of the charging case's power, and thus improving charging efficiency and increasing the overall battery life. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a front sectional view of the present invention;

[0016] Figure 3 This is an enlarged view of part A of this utility model;

[0017] Figure 4 This is an enlarged view of part B of the present invention;

[0018] Figure 5 This is a system block diagram of the present invention;

[0019] Figure 6 This is a circuit diagram of the boost circuit of this utility model;

[0020] Figure 7 This is a circuit diagram of the power management chip of this utility model;

[0021] Figure 8 This is a circuit diagram of the MCU control panel of this utility model;

[0022] Figure 9 This is a circuit diagram of the TYPE-C charging port of this utility model.

[0023] In the diagram: 1. Charging case; 2. Sealing cover; 3. Indicator light; 4. Charging cavity; 5. Earphone body; 6. Mounting cavity; 7. MCU control panel; 8. Power management chip; 9. Battery cavity; 10. Battery; 11. Power monitoring module; 12. TYPE-C charging port; 13. Support rod; 14. First magnetic ring; 15. Second magnetic ring; 16. Charging head; 17. Voltage detection module; 18. Through slot; 19. Mounting slot; 20. First mounting slot; 21. First magnetic block; 22. Second mounting slot; 23. Second magnetic block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figure 1-9 This utility model provides a tracking charging device for earphones, including a charging case 1. A charging cavity 4 is formed in the middle of the top of the charging case 1. Earphone bodies 5 are fitted inside both charging cavities 4. A through groove 18 is formed in the middle of the bottom of the inner wall of each of the two charging cavities 4. A mounting groove 19 is formed at the bottom between the two through grooves 18. An MCU control panel 7 is fixedly installed inside the mounting groove 19. A power management chip 8 and a boost circuit are arranged in the middle of the top of the MCU control panel 7. Charging heads 16 and voltage detection modules 17 are fixedly installed on both sides of the top of the MCU control panel 7. The two charging heads 16 and the two voltage detection modules 17 are respectively arranged corresponding to the two earphone bodies 5. A battery cavity 9 is formed inside the charging case 1. A storage battery 10 is fixedly installed inside the battery cavity 9. A battery 10 is fixedly mounted on one side of the storage battery 10. Equipped with a power monitoring module 11, the charging case 1 has a sealing cover 2 hinged to the outer side of its top. Two voltage detection modules 17 monitor the voltage of the two earphone bodies 5 in real time and transmit the monitored data to the MCU control panel 7. The charging case 1 compares its own battery voltage with the voltage of the earphone body 5. If the battery voltage of the charging case 1 is greater than or equal to the earphone battery voltage, the power management chip 8 will directly charge the earphone body 5 using the current battery voltage of the charging case 1. If the battery voltage of the charging case 1 is less than or equal to the earphone battery voltage, the power management chip 8 will increase the voltage of the earphone body 5 by 0.1V through a boost circuit to charge the earphone body 5. This avoids excessive energy loss during the boost process, thereby improving the utilization rate of the charging case's power and increasing charging efficiency and overall battery life.

[0026] Two mounting cavities 6 are provided in the middle of the bottom end of the sealing cover 2. The two mounting cavities 6 are respectively set to correspond to the two earphone bodies 5. The two mounting cavities 6 facilitate the installation of the two earphone bodies 5.

[0027] The bottom of the sealing cover 2 has two second mounting slots 22 on both sides. A second magnetic block 23 is fixedly installed inside each of the two second mounting slots 22. The top of the charging box 1 has two first mounting slots 20 on both sides. A first magnetic block 21 is fixedly installed inside each of the two first mounting slots 20. The two first magnetic blocks 21 are respectively set to correspond with the two second magnetic blocks 23. The cooperation between the two first magnetic blocks 21 and the two second magnetic blocks 23 makes it easy for the sealing cover 2 to be limited on the charging box 1, so as to prevent the sealing cover 2 from opening automatically during carrying.

[0028] Support rods 13 are fixedly installed on both sides of the bottom of the inner wall of the two charging chambers 4. A first magnetic ring 14 is fixedly installed on the top between the two support rods 13 on the same side. A second magnetic ring 15 is fixedly installed at the bottom of the two earphone bodies 5. The two second magnetic rings 15 are respectively set to correspond to the two first magnetic rings 14. The cooperation between the two second magnetic rings 15 and the two first magnetic rings 14 makes it easy to limit the two earphone bodies 5 and prevent the earphone bodies 5 from becoming loose during charging.

[0029] In this embodiment, a TYPE-C charging port 12 is provided at the bottom of the charging case 1, which facilitates charging of the battery 10. The TYPE-C charging port 12 supports high data transfer rates and fast charging, providing a more efficient charging method for the battery 10. When it is necessary to replenish the battery 10 in the charging case 1, current is transmitted from the external power source to the internal circuitry of the charging case 1 through the charging cable. After being regulated by circuit components such as the power management chip, the battery 10 is charged, thereby ensuring that the charging case 1 can provide sufficient power support for the earphone body 5 when needed.

[0030] In this embodiment, the two through slots 18 are respectively configured to correspond to the two charging heads 16 and the two voltage detection modules 17, thereby facilitating the operation of the two charging heads 16. Specifically, the two through slots 18 are precisely configured to correspond to the two charging heads 16 and the two voltage detection modules 17, and the two are highly compatible in terms of spatial layout, size, and positional relationship, achieving efficient collaborative operation.

[0031] The shape of the through slot 18 is adapted to the outline of the charging head 16 and the voltage detection module 17, so that they are tightly embedded therein, and the components are stably installed inside the charging case. Furthermore, during the charging process, the earphone body is placed in the charging cavity, and the through slot 18 provides precise guidance for the alignment of the contacts of the charging head 16 with the interface of the earphone battery, so that the charging head can quickly and accurately connect with the interface of the earphone battery, reducing charging failures or inefficiencies caused by interface misalignment or poor contact.

[0032] In this embodiment, an indicator light 3 is fixedly installed on the front of the charging box 1. The indicator light 3 is designed to indicate the working status and power level of the charging box 1.

[0033] In this embodiment, the voltage of the two earphone bodies 5 is monitored in real time by two voltage detection modules 17, and the monitored data is transmitted to the MCU control panel 7. The battery voltage of the charging case 1 is compared with the voltage of the earphone body 5. If the battery voltage of the charging case 1 is greater than or equal to the earphone battery voltage, the power management chip 8 will directly charge the earphone body 5 using the current battery voltage of the charging case 1. If the battery voltage of the charging case 1 is less than or equal to the earphone battery voltage, the power management chip 8 will increase the voltage of the earphone body 5 by 0.1V through the boost circuit to charge the earphone body 5. This can avoid excessive energy loss during the boost process, thereby improving the utilization rate of the charging case's power, and thus improving charging efficiency and increasing the overall battery life.

[0034] Specifically, to achieve intelligent following, in order to reduce excessive energy loss due to temperature rise caused by voltage boost, the heat loss calculation formula is as follows (ignoring the thermal resistance of the environment and assuming a constant time): Ploss = Psupply - Pout; where Ploss is the heat loss, Psupply is the input power, and Pout is the output power.

[0035] Taking traditional charging as an example: With a boost input U of 5V and an internal resistance R of 1 (for ease of calculation), then: Psupply = U2 / R = 5 × 5 ÷ 1 = 25W. Assuming the output voltage to the battery is 3.7V and the internal resistance R is 1 (the internal resistance is the same), then: Pout = U2 / R = 3.7 × 3.7 ÷ 1 = 13.69W. Therefore, the heat loss Ploss = Psupply - Pout = 25 - 13.69 = 11.31W.

[0036] When charging using the intelligent charging follow technology: Assuming the earphone battery voltage is 3.7V, the charging case boosts the voltage by 0.1V to 3.8V. According to the heat loss calculation formula: Ploss = (3.8 × 3.8 ÷ 1) - (3.7 × 3.7 ÷ 1) = 14.44 - 13.69 = 0.75W. The above comparison shows that intelligent charging follow technology can effectively reduce energy loss and improve charging efficiency, thereby enhancing power utilization.

[0037] When the earphone body 5 is placed into the charging case 1, the charging case 1 immediately detects the earphone load. When the charging case 1 is closed, the MCU control panel 7 receives a closing signal from the Hall switch, and then the MCU control panel 7 of the charging case 1 sends a communication command to the earphone. After receiving the command, the earphone body 5's ADC detection circuit reads the battery voltage and feeds it back to the charging case 1. After receiving the feedback, the charging case 1 compares the voltage of the battery 10 in its own battery compartment 9 with the earphone battery voltage, and then executes the corresponding logic.

[0038] Logic A: If the voltage of the battery 10 in the battery compartment 9 of the charging case 1 is greater than or equal to the voltage of the earphone battery, then the power management chip 8 will use the current battery voltage to directly charge the earphone body 5 through the charging head 16. When the earphone voltage reaches the set design voltage, the earphone will send a signal to the charging case 1 to indicate that the preset voltage has been reached. The charging case 1 will then run Logic A again until the entire charging process is complete.

[0039] Logic B: If the voltage of the battery 10 inside the battery compartment 9 of the charging case 1 is less than or equal to the voltage of the earphone battery, then the power management chip 8 will increase the voltage by 0.1V based on the earphone voltage through the boost circuit, and charge the earphone body 5 through the charging head 16. When the earphone voltage reaches the set design voltage, the earphone will send a signal to the charging case 1 to indicate that the preset voltage has been reached. The charging case 1 will then run Logic B again until the entire charging process is complete.

[0040] However, if the charging case 1 does not receive feedback, it may be due to a problem with the earphone itself 5. In this case, the charging case 1 will continuously charge the earphone itself 5 at the current voltage for a certain period of time, such as 10 minutes. If it still does not power on after charging, it means that the earphone itself 5 is damaged, and the charging case 1 will stop discharging. Alternatively, if the charging case 1 does not receive feedback, it may also be due to the earphone being over-discharged and low on power. In this case, the charging case 1 will continuously charge the earphone itself 5 at the current voltage for a certain period of time, such as 10 minutes, and the earphone will power on. After powering on, the earphone itself 5 will send a signal to indicate the current voltage. If the voltage of the battery 10 in the battery compartment 9 of the charging case 1 is greater than or equal to the earphone battery voltage, then logic A will be executed; if the voltage of the battery 10 in the battery compartment 9 of the charging case 1 is less than or equal to the earphone battery voltage, then logic B will be executed, until the entire charging process is complete.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tracking charging device for headphones, comprising a charging case (1), characterized in that: The charging box (1) has a charging cavity (4) in the middle of its top. The two charging cavities (4) are fitted with earphone bodies (5). The bottom of the inner wall of the two charging cavities (4) is provided with a through groove (18). The bottom between the two through grooves (18) is provided with a placement groove (19). The placement groove (19) is fixedly installed with an MCU control panel (7). The top of the MCU control panel (7) is provided with a power management chip (8) and a boost circuit. The top two sides of the MCU control panel (7) are fixedly installed with a charging head (16) and a voltage detection module (17). The two charging heads (16) and the two voltage detection modules (17) are respectively provided with corresponding earphone bodies (5). The charging box (1) has a battery cavity (9) in its interior. The battery cavity (9) is fixedly installed with a storage battery (10). The storage battery (10) is fixedly installed with a power monitoring module (11) on one side. The top of the charging box (1) is hinged with a sealing cover (2).

2. The tracking and charging device for an earphone according to claim 1, characterized in that: Two mounting cavities (6) are provided in the middle of the bottom end of the sealing cover (2), and the two mounting cavities (6) are respectively set to correspond to the two earphone bodies (5).

3. The tracking and charging device for an earphone according to claim 1, characterized in that: The sealing cover (2) has two second mounting slots (22) on both sides of its bottom end. Two second magnetic blocks (23) are fixedly installed inside the two second mounting slots (22). The charging box (1) has two first mounting slots (20) on both sides of its top end. Two first magnetic blocks (21) are fixedly installed inside the two first mounting slots (20). The two first magnetic blocks (21) are respectively set to correspond to the two second magnetic blocks (23).

4. The tracking and charging device for an earphone according to claim 1, characterized in that: Support rods (13) are fixedly installed on both sides of the bottom of the inner wall of the two charging chambers (4). A first magnetic ring (14) is fixedly installed on the top of the two support rods (13) located on the same side. A second magnetic ring (15) is fixedly installed at the bottom of the two earphone bodies (5). The two second magnetic rings (15) are respectively arranged corresponding to the two first magnetic rings (14).

5. The tracking and charging device for an earphone according to claim 1, characterized in that: The bottom of the charging box (1) is provided with a TYPE-C charging port (12).

6. The tracking and charging device for an earphone according to claim 1, characterized in that: The two through slots (18) are respectively set to correspond to the two charging heads (16) and the two voltage detection modules (17).

7. The tracking and charging device for an earphone according to claim 1, characterized in that: An indicator light (3) is fixedly installed on the front of the charging box (1).

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