CN209748232U - Earphone charging box and wireless earphone - Google Patents
Earphone charging box and wireless earphone Download PDFInfo
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- CN209748232U CN209748232U CN201920669904.1U CN201920669904U CN209748232U CN 209748232 U CN209748232 U CN 209748232U CN 201920669904 U CN201920669904 U CN 201920669904U CN 209748232 U CN209748232 U CN 209748232U
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Abstract
The utility model provides an earphone charging box can charge for wireless earphone's rechargeable battery through linear charging mode, includes: the earphone charging box battery is used as a power supply for charging the electronic equipment to be charged so as to provide direct-current voltage; the voltage control switch converts the direct-current voltage provided by the battery of the earphone charging box into direct-current charging voltage so as to charge the charging battery through the direct-current charging voltage; the controller generates a control signal of the voltage control switch to control the on and off of the voltage control switch so as to control the voltage value of the converted direct current charging voltage; and a voltage sensor detecting a battery voltage of the rechargeable battery, wherein the controller controls a voltage value of the direct current charging voltage according to a voltage value of the battery voltage detected by the voltage sensor. The present disclosure also provides a wireless headset.
Description
Technical Field
The present disclosure relates to an earphone charging box and a wireless earphone.
Background
Electronic devices such as TWS headsets are charged in a linear charging manner because the battery capacity is small and the charging current is small, but the efficiency of linear charging is lower than that of switching charging, and when the charging current is large, the power consumption is large. Therefore, for the linear charging mode, the problem of low charging efficiency needs to be solved, so as to solve the problem of the overall endurance of the electronic equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, the present disclosure provides an earphone charging box and a wireless earphone.
According to an aspect of the present disclosure, an earphone charging box capable of charging a rechargeable battery of a wireless earphone by a linear charging manner, includes: the earphone charging box battery is used as a power supply for charging the electronic equipment to be charged so as to provide direct-current voltage; the voltage control switch converts the direct-current voltage provided by the battery of the earphone charging box into direct-current charging voltage so as to charge the rechargeable battery through the direct-current charging voltage; the controller generates a control signal of the voltage control switch to control the on and off of the voltage control switch so as to control the voltage value of the converted direct current charging voltage; and a voltage sensor detecting a battery voltage of the rechargeable battery, wherein the controller controls a voltage value of the dc charging voltage according to a voltage value of the battery voltage detected by the voltage sensor.
According to at least one embodiment of the present disclosure, the controller makes a voltage difference value between the voltage value of the direct current charging voltage and the voltage value of the battery voltage equal to a predetermined voltage difference value according to the voltage value of the battery voltage.
According to at least one embodiment of the present disclosure, when the voltage value of the direct current voltage or the direct current charging voltage is greater than the voltage value of the battery voltage, or greater than the sum of the battery voltage value and the predetermined voltage difference value, the controller controls the voltage control switch so as to supply the direct current voltage as the direct current charging voltage to the charging battery.
According to at least one embodiment of the present disclosure, when the dc voltage or the dc charging voltage is less than or equal to the voltage value of the battery voltage, the controller controls the voltage control switch so as to perform the step-up conversion on the dc voltage to obtain a converted dc charging voltage having a voltage value equal to a sum of the voltage value of the battery voltage and the predetermined voltage difference value.
According to at least one embodiment of the present disclosure, when the dc voltage is up-converted to obtain a converted dc charging voltage, the controller controls the converted dc charging voltage output by the voltage control switch through an I2C bus.
According to at least one embodiment of the present disclosure, when the earphone charging box charges the rechargeable battery of the wireless earphone, the charging contact of the wireless earphone is in electrical contact with the charging contact of the earphone charging box.
According to at least one embodiment of the present disclosure, the voltage control switch includes a voltage boost unit and a direct charging unit, and when the voltage value of the dc voltage or the dc charging voltage is greater than the voltage value of the battery voltage, or greater than the sum of the battery voltage value and the predetermined voltage difference value, the dc voltage is directly provided to the rechargeable battery through the direct charging unit to charge the rechargeable battery; and when the direct current voltage or the direct current charging voltage is smaller than the voltage value of the battery voltage, boosting the direct current voltage through the boosting unit, and providing the boosted voltage for the charging battery to charge the charging battery.
According to at least one embodiment of the present disclosure, the controller further includes a voltage comparison unit that compares the direct current voltage or the direct current charging voltage with the battery voltage, and provides a comparison result to the controller.
According to at least one embodiment of the present disclosure, the charging device further includes a selection unit for selecting the direct charging unit or the boosting unit to charge the rechargeable battery.
According to another aspect of the present disclosure, a wireless headset includes a rechargeable battery, the wireless headset is adapted to the headset charging box, and the rechargeable battery is charged through the headset charging box.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic block diagram of an earphone charging box according to one embodiment of the present disclosure.
fig. 2 is a schematic flow diagram of a charging method according to one embodiment of the present disclosure.
Fig. 3 is a schematic flow diagram of a charging method according to one embodiment of the present disclosure.
Fig. 4 is a schematic diagram of an earphone and an earphone charging box according to one embodiment of the present disclosure.
Fig. 5 is a cross-sectional view of an earphone and an earphone charging box according to one embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that, in the present disclosure, features in the embodiments and examples may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Currently, there are two main charging methods such as lithium ion battery: switch mode charging and linear mode charging. For switched mode charging, the current is intermittently such as a battery and the magnitude of the current is constant. For linear charging, the charging current decreases linearly with the increasing voltage of the battery.
according to one embodiment of the present disclosure, there is provided an earphone charging box for charging a rechargeable battery of an electronic device. Wherein the earphone charging box may be an earphone charging box with a battery (hereinafter referred to as "earphone charging box battery"), wherein the charging battery may be charged by an external power source (e.g., commercial power, etc.) and store electric energy. And the headset charging box can charge other electronic equipment through the headset charging box battery. In a practical application, the headset charging box may be a portable headset charging box, and the electronic device may be a portable terminal, such as a wireless headset or the like.
As shown in fig. 1, the charging device 10 of the earphone charging box may include: the earphone charging box comprises an earphone charging box battery 11, a voltage control switch 12, a controller 13 and a voltage sensor 14.
The earphone charging box battery 11 is used to provide a direct current voltage Vin, and may be charged by a commercial power source (e.g., commercial power), and the direct current voltage provided by it may be charged by the charging battery 21. The battery of the earphone charging box can be a chargeable and dischargeable battery such as a lithium ion battery.
The input terminal of the voltage control switch 12 may be connected to the dc voltage Vin provided by the battery 11 of the charging box of the earphone. The voltage control switch 12 may include a DC-DC converter, which may include one or more switches, such as metal oxide semiconductor field effect transistors, for example, to adjust the voltage value of the DC voltage by switching the switches on and off, thereby generating the DC charging voltage Vout. The dc charging voltage Vout output from the voltage control switch 12 is used to charge the rechargeable battery 21.
The voltage sensor 14 is configured to collect a battery voltage Vbat of the rechargeable battery 21 and supply the collected battery voltage Vbat to the controller 13, and the controller 13 controls the direct-current charging voltage Vout according to the collected battery voltage Vbat, so that the rechargeable battery 21 is charged by the direct-current charging voltage Vout.
According to an alternative embodiment of the present disclosure, the controller 13 may adjust the dc charging voltage Vout according to the collected battery voltage Vbat, so as to make a voltage difference Δ V between a voltage value of the dc charging voltage and a voltage value of the battery voltage.
According to an optional embodiment of the present disclosure, the voltage sensor 14 may further collect a voltage value of the dc charging voltage Vout to determine a magnitude and/or a difference between the battery voltage Vbat and the dc charging voltage Vout.
When the voltage value of the dc charging voltage Vout is greater than the voltage value of the battery voltage Vbat, or greater than the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference value, the controller 13 controls the voltage control switch 12 so as to supply the dc voltage Vin as the dc charging voltage Vout to the charging battery 21.
When the dc charging voltage Vout is less than or equal to the voltage value of the battery voltage Vbat, the controller 13 controls the voltage control switch 12 so as to boost-convert the dc voltage Vin to obtain a converted dc charging voltage Vout having a voltage value equal to the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference value. In a specific example, the controller 13 may output a control signal for controlling a switch, such as a mosfet, of the voltage control switch 12, and the magnitude of the voltage value of the dc charging voltage Vout is adjusted by the switch of the switch.
The magnitude of the predetermined voltage difference can be set according to actual needs. For example, in the case where the change in the internal resistance of the secondary battery 21 is small, the predetermined voltage difference value may be set to a predetermined value. Further, the magnitude of the predetermined voltage difference may also be dynamically adjusted according to the change in the internal resistance of the secondary battery 21, so that the secondary battery 21 is charged with a constant current. By maintaining the voltage difference between the dc charging voltage Vout and the battery voltage Vbat at a predetermined voltage difference, the power consumption of the circuit can be reduced under the condition of a constant charging current, thereby improving the efficiency. The dc charging voltage Vout may be directly obtained from the dc voltage Vin when the dc charging voltage Vout is greater than the voltage value of the battery voltage Vbat or greater than the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference.
According to an alternative embodiment of the present disclosure, the voltage value of the dc charging voltage Vout may also be calculated by the control signal provided by the controller 13 to the voltage control switch 12 and the circuit structure in the voltage control switch 12, so that the battery voltage Vbat received from the voltage sensor 14 is compared with the dc charging voltage Vout by the controller 13, and the control adjustment is performed according to the comparison result to adjust the dc charging voltage Vout, so that the voltage difference between the battery voltage Vbat and the dc charging voltage Vout is constant, and the like.
According to an optional embodiment of the present disclosure, the voltage sensor 14 may further collect a voltage value of the dc voltage Vin to determine a magnitude and/or a difference between the battery voltage Vbat and the dc voltage Vin. When the voltage value of the dc voltage Vin is greater than the voltage value of the battery voltage Vbat, or greater than the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference value, the controller 13 controls the voltage control switch 12 so as to supply the dc voltage Vin to the charging battery 21 as the dc charging voltage Vout. When the dc voltage Vin is less than or equal to the voltage value of the battery voltage Vbat, the controller 13 controls the voltage control switch 12 so as to boost-convert the dc voltage Vin to obtain a converted dc charging voltage Vout having a voltage value equal to the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference value.
In the present disclosure, when the dc voltage Vin is lower than the charge cutoff voltage of the battery of the earphone charging box, the charging operation is stopped.
According to an optional embodiment of the present disclosure, a voltage comparison calculation unit may be further included, for comparing the respective voltage values collected by the voltage sensor 14, for example, for comparing the dc charging voltage Vout with the battery voltage Vbat; the dc voltage Vin is compared with the battery voltage Vbat and the like, and the comparison result is input to the controller 13, and the controller 13 can control the voltage value of the dc charging voltage Vout in accordance with the comparison result.
According to an optional embodiment of the present disclosure, when the dc voltage Vin or the dc charging voltage Vout is greater than or less than the sum of the battery voltage Vbat and the predetermined voltage difference, the controller 13 controls the voltage control switch 12 to make the voltage difference between the dc charging voltage Vout and the battery voltage Vbat be the predetermined voltage difference, so as to ensure a constant charging current.
According to an alternative embodiment of the present disclosure, the voltage control switch 12 may include a boosting unit and a direct charging unit. Both ends of the voltage boosting unit may be connected to both ends of the earphone charging box battery 11 to receive the dc voltage Vin of the earphone charging box battery 11, and the direct charging unit may also be connected to both ends of the earphone charging box battery 11 to receive the dc voltage Vin of the earphone charging box battery 11.
The boosting unit is configured to boost the output of the voltage control switch 12 under the control of the controller 13 when the voltage value of the dc voltage Vin or the dc charging voltage Vout is smaller than the voltage value of the battery voltage Vbat, or smaller than the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference value, so as to make the dc charging voltage Vout equal to the sum of the voltage value of the battery voltage Vbat and the predetermined voltage difference value. Here, the boosting unit is configured to boost the dc voltage Vin to obtain a boosted dc charging voltage Vout.
The direct charging unit is configured to, when the voltage value of the dc voltage Vin or the dc charging voltage Vout is greater than the voltage value of the battery voltage Vbat, or greater than the sum of the voltage value of the battery voltage Vbat and a predetermined voltage difference, use the dc voltage Vin as the dc charging voltage Vout.
In the voltage control switch, the boosting unit and the direct charging unit may be arranged in parallel, so that whether to use the boosting unit or the direct charging unit may be selected according to a relative magnitude between the voltages.
For example, the controller 13 may receive the battery voltage Vbat from the voltage sensor and the voltage value of the dc voltage Vin or the dc charging voltage Vout, and the controller 13 may compare and calculate the battery voltage Vbat and the dc voltage Vin or the battery voltage Vbat and the dc charging voltage Vout, or may also consider a predetermined voltage difference value in the comparison and calculation, so that the controller 13 may compare the calculated result to select whether to use the boost unit or the direct charging unit.
In an optional embodiment of the present disclosure, a voltage comparison calculation unit may be further included, and whether to use the boosting unit or the direct charging unit may be selected by a result of the voltage comparison calculation unit. The two input ends of the voltage comparison and calculation unit can respectively input the collected battery voltage Vbat and the DC voltage Vin, or can also respectively input the collected DC charging voltage Vout and the battery voltage Vbat, so that the voltage comparison and calculation unit can compare the battery voltage Vbat and the DC voltage Vin. For example, when the voltage control switch 12 is controlled according to the voltage value of the dc voltage Vin or the dc charging voltage Vout and the voltage value of the battery voltage Vbat, the voltage comparison calculation unit may output a high level and a low level by comparing the two inputs, for example, when the voltage value of the dc voltage Vin or the dc charging voltage Vout is higher than the battery voltage Vbat, the high level is output, and at this time, the direct charging unit may be selected by the high level to form the dc charging voltage to charge the rechargeable battery. When the voltage value of the direct current voltage Vin or the direct current charging voltage Vout is lower than the battery voltage Vbat, a low level is output, and at this time, the boosting unit can be selected through the low level to form a boosted direct current charging voltage to charge the rechargeable battery.
In addition, when the voltage control switch 12 is controlled according to the sum of the voltage value of the dc voltage Vin or the dc charging voltage Vout and the battery voltage Vbat and the predetermined voltage difference, the voltage comparison calculation unit may output a high level and a low level by comparing after taking the predetermined voltage difference into account when comparing, taking into account the predetermined voltage difference, for example, when the voltage value of the dc voltage Vin or the dc charging voltage Vout is greater than the sum of the battery voltage Vbat and the predetermined voltage difference, the high level is output, and at this time, the direct charging unit may be selected by the high level to form the dc charging voltage to charge the rechargeable battery. When the voltage value of the direct current voltage Vin or the direct current charging voltage Vout is smaller than the sum of the battery voltage Vbat and the preset voltage difference value, a low level is output, and at the moment, the boosting unit can be selected through the low level to form a boosted direct current charging voltage to charge the rechargeable battery.
In addition, according to a further alternative embodiment of the present disclosure, when the voltage control switch 12 is controlled according to the sum of the voltage value of the dc voltage Vin or the dc charging voltage Vout and the voltage value of the battery voltage Vbat and the predetermined voltage difference, the battery voltage Vbat and the dc voltage Vin or the dc charging voltage Vout may be collected as two inputs of the voltage comparison calculation unit, the voltage difference between the battery voltage Vbat and the dc voltage Vin or the dc charging voltage Vout may be calculated by the voltage comparison calculation unit, and the voltage difference is provided to the controller 13, after the controller 13 receives the voltage difference, the voltage difference is combined with the predetermined voltage difference for comparison, so that whether the voltage value of the dc voltage Vin or the dc charging voltage Vout is greater than or less than the sum of the voltage value of the battery voltage Vbat and the predetermined voltage difference may be calculated, and when the voltage value of the dc voltage Vin or the dc charging voltage Vout is greater than the sum of the battery voltage Vbat and the predetermined voltage difference, the voltage difference is calculated And then outputting a high level, and at the moment, selecting the direct charging unit through the high level to form a direct current charging voltage to charge the rechargeable battery. When the voltage value of the direct current voltage Vin or the direct current charging voltage Vout is smaller than the sum of the battery voltage Vbat and the preset voltage difference value, a low level is output, and at the moment, the boosting unit can be selected through the low level to form a boosted direct current charging voltage to charge the rechargeable battery.
in one example, when selecting whether to use the boosting unit or the direct charging unit, it may be implemented by a switch selection circuit, for example, gated by an output of the voltage comparison calculation unit or an output of the controller.
In addition, it should be noted that the voltage acquisition, the voltage regulation control and the like are performed in real time so as to be adjusted in time in the charging process, and thus, the dynamic constant difference between the direct current charging voltage and the battery voltage in the charging process can be ensured.
According to a specific example of the present disclosure, the controller 13 may be a microcontroller MCU, a DC-DC conversion chip may be used in the boosting, and the microcontroller MCU may control the DC-DC conversion chip through an I2C bus, so as to adjust an output voltage of the DC-DC conversion chip.
according to another embodiment of the present disclosure, a charging method for linear charging is provided. This method may correspond to what is described above for the earphone charging box, since some of the content described in the earphone charging box may not be described in detail in the description of this method.
As shown in fig. 2, the method 20 may include: a step S21 of supplying a direct-current voltage for use as a charging power supply to generate a direct-current charging voltage to charge the battery to be charged; step S22, collecting the battery voltage and the direct current voltage or the direct current charging voltage of the charged battery; step S23, adjusting the voltage value of the dc charging voltage based on the collected dc voltage or the voltage value of the dc charging voltage and the voltage value of the battery voltage.
In step S21, the charging power source may be a battery that supplies charging power, and may be, for example, a battery of a portable charging device such as a charger, a headphone charging box, or the like, and a dc voltage is output from the battery, and a dc charging voltage for charging another battery is generated based on the dc voltage. The direct current voltage can be directly used as a direct current charging voltage or can be converted into the direct current charging voltage to charge the rechargeable battery.
In step S22, the battery voltage of the battery to be charged and the dc voltage or the dc charging voltage are collected. In this step, the battery voltage of the battery to be charged and the dc voltage of the charging power supply may be collected in real time, or the battery voltage of the battery to be charged and the dc charging voltage may be collected in real time. Wherein the acquisition can be effected by means of a corresponding voltage sensor.
In step S23, the voltage value of the dc charging voltage is adjusted based on the collected dc voltage or the voltage value of the dc charging voltage, and the voltage value of the battery voltage. In this step, the voltage value of the dc charging voltage is adjusted by comparing the voltage value of the collected dc voltage with the voltage value of the battery voltage, or comparing the voltage value of the dc charging voltage with the voltage value of the battery voltage, thereby controlling the voltage value of the dc charging voltage for charging the battery to be charged according to the comparison result.
According to another embodiment of the present disclosure, a charging method for linear charging is provided. This method may correspond to what is described above for the earphone charging box, since some of the content described in the earphone charging box may not be described in detail in the description of this method.
As shown in fig. 3, the method 30 may include: a step S31 of supplying a direct-current voltage for use as a charging power supply to generate a direct-current charging voltage to charge the battery to be charged; step S32, collecting the battery voltage and the direct current voltage or the direct current charging voltage of the charged battery; step S33, comparing the dc voltage or the dc charging voltage with the battery voltage; step S34, supplying the dc voltage to the rechargeable battery as a dc charging voltage; and step S35, performing boost conversion on the DC voltage to obtain a converted DC charging voltage to be supplied to the rechargeable battery
In step S31, the charging power source may be a battery that supplies charging power, for example, a battery of a portable charging device such as an earphone charging box, and a dc voltage based on which a dc charging voltage for charging another battery is generated is output from the battery. The direct current voltage can be directly used as a direct current charging voltage or can be converted into the direct current charging voltage to charge the rechargeable battery.
In step S32, the battery voltage of the battery to be charged and the dc voltage or the dc charging voltage are collected. In this step, the battery voltage of the battery to be charged and the dc voltage of the charging power supply may be collected in real time, or the battery voltage of the battery to be charged and the dc charging voltage may be collected in real time. Wherein the acquisition can be effected by means of a corresponding voltage sensor.
In step S33, the dc voltage is compared with the battery voltage or the dc charging voltage is compared with the battery voltage.
The step S34 or S35 is performed according to the comparison result of the step S33, so that the secondary battery is charged according to the dc charging voltage determined at the step S34 or S35.
In a specific example, the battery voltage Vbat and the dc voltage Vin may be compared; when the voltage value of the dc voltage Vin is greater than the battery voltage Vbat, step S34 is executed to provide the dc voltage Vin to the rechargeable battery as the dc charging voltage Vout, and when the voltage value of the dc voltage Vin is less than the battery voltage Vbat, step S35 is executed to perform voltage-up conversion on the dc voltage Vin to obtain the converted dc charging voltage Vout to provide the converted dc charging voltage Vout to the rechargeable battery. The battery voltage Vbat and the dc charging voltage Vout may also be compared; when the voltage value of the dc charging voltage Vout is greater than the battery voltage Vbat, step S34 is executed to provide the dc voltage as the dc charging voltage to the rechargeable battery; when the voltage value of the dc charging voltage Vout is smaller than the battery voltage Vbat, step S35 is executed to perform voltage-up conversion on the dc voltage Vin to obtain a converted dc charging voltage Vout for supplying to the charging battery. In an alternative example, the dc charging voltage Vout may also be controlled according to the sum of the voltage value of the dc voltage Vin and the voltage value of the battery voltage Vbat and a predetermined voltage difference value. For example, when the voltage value of the dc voltage Vin is greater than the sum of the battery voltage Vbat and the predetermined voltage difference, step S34 is executed to provide the dc voltage Vin as the dc charging voltage Vout to the charging battery; when the voltage value of the dc charging voltage Vout is smaller than the sum of the battery voltage Vbat and the predetermined voltage difference, step S35 is executed to perform step-up conversion on the dc voltage Vin to obtain a converted dc charging voltage Vout for supplying to the charging battery. The dc charging voltage Vout may also be controlled according to the sum of the voltage value of the dc charging voltage Vout and the voltage value of the battery voltage Vbat and a predetermined voltage difference. For example, when the voltage value of the dc charging voltage Vout is greater than the sum of the battery voltage Vbat and the predetermined voltage difference, step S34 is executed to provide the dc voltage Vin to the charging battery as the dc charging voltage Vout; when the voltage value of the dc charging voltage Vout is smaller than the sum of the battery voltage Vbat and the predetermined voltage difference, step S35 is executed to perform step-up conversion on the dc voltage Vin to obtain a converted dc charging voltage Vout for supplying to the charging battery.
For example, when the dc voltage Vin is low, the dc voltage Vin may be boosted to generate the dc charging voltage Vout, and the dc charging voltage Vout and the battery voltage Vbat may be kept at a constant voltage difference, so that power consumption of the circuit may be reduced, thereby improving charging efficiency.
According to at least one embodiment of the present disclosure, the electronic device is a wireless headset, and the headset charging box is a headset charging box for charging the charging headset, the wireless headset being electrically connected to the charging contact of the headset charging box through the charging contact.
According to still another aspect of the present disclosure, an electronic device includes: a memory storing execution instructions; and a processor executing the execution instructions stored by the memory to cause the processor to perform the above-described method.
According to yet another aspect of the disclosure, a readable storage medium has stored therein execution instructions, which when executed by a processor, are used to implement the above-described method.
The following description will be made by taking a wireless headset and a headset charging box adapted to the headset as an example.
Wherein the wireless headset may be a TWS headset and the headset charging box is for charging the headset when it is placed therein. The charging box 20 may charge its battery through an interface by an external power source, and then the headset may be charged by its battery.
The earphone charging box can be placed in the earphone charging box, and the charging contact on the surface of the earphone charging box is contacted with the charging contact on the surface of the wireless earphone, so that the charging operation is performed.
As shown in fig. 4 and 5, the charging box 20, which is one example of the earphone charging box, may include a first contact 22, a second contact 23, and a third contact 24. In which fig. 4 shows a schematic view of external features of the headset and the charging box, and fig. 5 shows a cross-sectional view when the headset is placed in the headset charging box.
The first contact 22 may be used to make contact with the first charging contact 101 of the headset 100 as an electronic device, and the second contact 23 may be contacted with the second charging contact 102 of the headset 100, so that, after the first contact 22 and the second contact 23 are brought into contact with the first charging contact 101 and the second charging contact 102, a function of charging the headset 100 through the charging box 20 may be implemented. The third contact 24 may be used to contact the data transmission contact 103 of the headset 100, so that the data transmission function, such as data transmission and reception, between the headset 100 and the charging box 20 is realized through the contact of the third contact 24 and the data transmission contact 103.
The first contact 22 and the second contact 23 are brought into contact with the first charging contact 101 and the second charging contact 102, respectively, by magnetic attraction therebetween, and the third contact 24 is brought into elastic contact with the data transmission contact 103. In the case where the first contact 22 is brought into rigid contact with the first charging contact 101 by magnetic attraction and the second contact 23 is brought into rigid contact with the second charging contact 102 by magnetic attraction, the third contact 24 is brought into elastic contact with the data transmitting contact 103 by the magnetic attraction of the first contact 22 with the first charging contact 101 and the magnetic attraction of the second contact 23 with the second charging contact 102.
The contact between the first contact 22 and the first charging contact 101 may be a rigid contact, and the contact between the second contact 23 and the second charging contact 102 may also be a rigid contact. The first contact 22 and the first charging contact 101, and the second contact 23 and the second charging contact 102 may be made of a magnetic material so that magnetic attraction therebetween is achieved. For example, the first contact 22 and the second contact 23 may be made of a magnet, and the first charging contact 101 and the second charging contact 102 may be made of a metallic iron piece or the like. The third contact 24 is in elastic contact with the data transmission contact 103, in one embodiment of the present disclosure, the data transmission contact 103 is in the form of a metal boss, and the third contact 24 may be in the form of an elastic member, for example, the third contact 24 may be in the form of a pogo pin, for example, including a thimble, a spring and a sleeve, the thimble being located on the upper side and being capable of pushing the spring located in the sleeve to compress. When the third contact 24 is pressed by the data transmission contact 103, the third contact 24 may contract and may maintain close contact with the data transmission contact 103.
The first contact 22, the second contact 23, and the third contact 24 may be disposed at the bottom of a headset receiving groove 25 of the charging box, which receives the headset, at positions corresponding to the contacts of the headset when the headset is put in.
When the earphone is put into the charging box, the earphone is introduced into the earphone accommodating groove through the magnetic attraction of the two charging contacts of the earphone and the two charging contacts of the charging box, so that the introduction is realized through the magnetic attraction between the contacts, the inner space of the earphone and the charging box is saved, the saved space can be used for increasing the battery capacity, the service time of the earphone and the charging box after charging is prolonged, and the size of the charging box can be reduced.
Furthermore, although the earphone and the earphone charging box are exemplified above, it will be understood by those skilled in the art that the earphone charging box can also be applied to other electronic devices, such as a portable charging power source in the form of a charger or the like, can also be provided in a smart terminal or the like that can charge other smart terminals, and the earphone described in the present disclosure can be a True Wireless Stereo (TWS) earphone.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more of the embodiments or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments/modes are merely for clarity of explanation of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Description of the reference numerals
10 charging device of earphone charging box
11 earphone charging box battery
12 voltage control switch
13 controller
14 voltage sensor
20 charging box
21 rechargeable battery
22 first contact
23 second contact
24 third contact
25 earphone holding groove
101 first charging contact
102 second charging contact
103 data transmission contact
100 earphone
Vbat battery voltage
Vin dc voltage
Vout DC charging voltage
Claims (10)
1. The utility model provides an earphone charging box, its characterized in that, earphone charging box can charge for the rechargeable battery of wireless earphone through linear charging mode, includes:
The earphone charging box battery is used as a power supply for charging the electronic equipment to be charged so as to provide direct-current voltage;
The voltage control switch converts the direct-current voltage provided by the battery of the earphone charging box into direct-current charging voltage so as to charge the rechargeable battery through the direct-current charging voltage;
The controller generates a control signal of the voltage control switch to control the on and off of the voltage control switch so as to control the voltage value of the converted direct current charging voltage; and
A voltage sensor that detects a battery voltage of the rechargeable battery,
Wherein the controller controls the voltage value of the direct current charging voltage according to the voltage value of the battery voltage detected by the voltage sensor.
2. The earphone charging box according to claim 1, wherein the controller makes a voltage difference value between the voltage value of the direct current charging voltage and the voltage value of the battery voltage equal to a predetermined voltage difference value according to the voltage value of the battery voltage.
3. The earphone charging box according to claim 2, wherein when the direct-current voltage or the voltage value of the direct-current charging voltage is greater than the voltage value of the battery voltage, or greater than the sum of the battery voltage value and the predetermined voltage difference value, the controller controls the voltage control switch so as to supply the direct-current voltage as the direct-current charging voltage to the charging battery.
4. The earphone charging box according to claim 2 or 3, wherein when the direct-current voltage or the direct-current charging voltage is less than or equal to the voltage value of the battery voltage, the controller controls the voltage control switch so as to up-convert the direct-current voltage to obtain a converted direct-current charging voltage having a voltage value equal to the sum of the voltage value of the battery voltage and the predetermined voltage difference value.
5. The earphone charging box according to claim 4, wherein the controller controls the converted DC charging voltage output from the voltage control switch through an I2C bus when the DC voltage is up-converted to obtain the converted DC charging voltage.
6. The headset charging box of claim 1, wherein the charging contacts of the wireless headset are in electrical contact with the charging contacts of the headset charging box when the headset charging box charges the rechargeable battery of the wireless headset.
7. The earphone charging box according to claim 2, wherein the voltage control switch includes a boosting unit and a direct charging unit,
When the voltage value of the direct current voltage or the direct current charging voltage is larger than the voltage value of the battery voltage or larger than the sum of the battery voltage value and the preset voltage difference value, the direct current voltage is directly supplied to the rechargeable battery through the direct charging unit to charge the rechargeable battery; and
And when the direct current voltage or the direct current charging voltage is smaller than the voltage value of the battery voltage, boosting the direct current voltage through the boosting unit, and providing the boosted voltage for the charging battery to charge the charging battery.
8. The earphone charging box according to claim 7, further comprising a voltage comparison unit that compares the direct current voltage or the direct current charging voltage with the battery voltage, and supplies a comparison result to the controller.
9. The earphone charging box according to claim 7 or 8, further comprising a selection unit for selecting the direct charging unit or the boosting unit to charge the rechargeable battery.
10. a wireless earphone is characterized by comprising a rechargeable battery,
The wireless headset is fitted with a headset charging box according to any of claims 1 to 9, through which the rechargeable battery is charged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920669904.1U CN209748232U (en) | 2019-05-11 | 2019-05-11 | Earphone charging box and wireless earphone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920669904.1U CN209748232U (en) | 2019-05-11 | 2019-05-11 | Earphone charging box and wireless earphone |
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| CN209748232U true CN209748232U (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098650A (en) * | 2019-05-11 | 2019-08-06 | 出门问问信息科技有限公司 | For the charging unit of linear-charging, charging method and electronic equipment |
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2019
- 2019-05-11 CN CN201920669904.1U patent/CN209748232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098650A (en) * | 2019-05-11 | 2019-08-06 | 出门问问信息科技有限公司 | For the charging unit of linear-charging, charging method and electronic equipment |
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