CN216599036U - Switching circuit, charging box and audio equipment - Google Patents
Switching circuit, charging box and audio equipment Download PDFInfo
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- CN216599036U CN216599036U CN202122211987.XU CN202122211987U CN216599036U CN 216599036 U CN216599036 U CN 216599036U CN 202122211987 U CN202122211987 U CN 202122211987U CN 216599036 U CN216599036 U CN 216599036U
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Abstract
The utility model discloses a switching circuit, a charging box and audio equipment. Wherein, the switching circuit is applied to the box that charges, the box that charges is used for carrying out charging operation or communication operation to the earphone, the switching circuit includes: the main control module is used for acquiring a switching instruction and generating a control signal; the switching module is electrically connected with the main control module and is used for switching the output voltage of the charging box according to the control signal; and the connecting module is electrically connected with the switching module and is used for being electrically connected with the earphone. The POGO PIN can be shared by communication operation and charging operation, and therefore the cost of the charging box is reduced.
Description
Technical Field
The utility model relates to the technical field of charging boxes, in particular to a switching circuit, a charging box and audio equipment.
Background
In the correlation technique, through the POGO PIN (POGO PIN) quantity in increasing the box that charges to solve the communication problem of the box that charges and earphone, be about to charge the box and distinguish with the POGO PIN that communicates. However, the above method increases the cost of the charging case, and is liable to cause problems such as poor contact of the POGO PIN.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a switching circuit, a charging box and audio equipment, which can realize that the POGO PIN is shared by communication operation and charging operation, thereby reducing the cost of the charging box.
The switching circuit according to an embodiment of the first aspect of the present invention is applied to a charging box for performing a charging operation or a communication operation on an earphone, and includes: the main control module is used for acquiring a switching instruction and generating a control signal; the switching module is electrically connected with the main control module and is used for switching the output voltage of the charging box according to the control signal; the connection module is electrically connected with the switching module and is used for being electrically connected with the earphone.
The switching circuit according to the embodiment of the utility model has at least the following beneficial effects: the main control module receives the switching instruction and generates a corresponding control signal, and the switching module outputs different output voltages according to the control signal, so that the charging operation or the communication operation is performed on the earphone according to the different output voltages. Therefore, under the condition that POGO PIN number in the connecting module is not required to be increased, the switching of the charging operation and the communication operation of the charging box to the earphone is realized, namely, the POGO PIN is shared by the charging operation and the communication operation, the cost of the charging box is reduced, and the problems of poor contact and the like of the POGO PIN are solved.
According to some embodiments of the utility model, the switching module comprises: the control unit is electrically connected with the main control module; the switching unit is electrically connected with the control unit and the connecting module respectively; the control unit is used for controlling the conducting state of the switching unit according to the control signal.
According to some embodiments of the utility model, the control unit comprises: the grid electrode of the first voltage-current control element is connected with the main control module, the source electrode of the first voltage-current control element is grounded, and the drain electrode of the first voltage-current control element is connected with the switching unit.
According to some embodiments of the utility model, the switching unit comprises: one end of the first resistor is electrically connected with the power supply output end of the main control module, and the other end of the first resistor is electrically connected with the drain electrode of the first voltage control current element; a source of the second voltage-current control element is electrically connected with one end of the first resistor, a gate of the second voltage-current control element is electrically connected with a drain of the first voltage-current control element, and the drain of the second voltage-current control element is electrically connected with the connection module; one end of the second resistor is electrically connected with the source electrode of the second voltage control current element, and the other end of the second resistor is electrically connected with the drain electrode of the second resistor; one end of the third resistor is electrically connected with the other end of the second resistor; and the drain of the third voltage-current control element is electrically connected with the other end of the third resistor, the gate of the third voltage-current control element is electrically connected with the drain of the first voltage-current control element, and the source of the third voltage-current control element is grounded.
According to some embodiments of the utility model, the control unit further comprises: one end of the fourth resistor is electrically connected with the power supply output end of the main control module, and the other end of the fourth resistor is electrically connected with the grid electrode of the first voltage control current element; and one end of the fifth resistor is electrically connected with the other end of the fourth resistor, and the other end of the fifth resistor is grounded.
According to some embodiments of the present invention, the first voltage-current control element, the second voltage-current control element, and the third voltage-current control element are any one of a MOS transistor and a triode, respectively.
According to some embodiments of the utility model, the master control module comprises: the key unit is used for acquiring the switching instruction; and the processing unit is respectively electrically connected with the key unit and the switching module and is used for generating the control signal according to the switching instruction.
According to some embodiments of the utility model, the master control module further comprises: and the boosting unit is electrically connected with the processing unit and the switching module respectively.
A charging box according to an embodiment of a second aspect of the present invention includes: a switching circuit as described in any one of the above embodiments.
An audio apparatus according to an embodiment of the third aspect of the present invention includes: the charging box as described in the above embodiment; the earphone is used for being electrically connected with the connecting module and switching to a charging state or a communication state according to the output voltage of the charging box.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the following figures and examples, in which:
FIG. 1 is a block diagram of a switching circuit according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a switching circuit according to an embodiment of the present invention;
FIG. 3 is another block diagram of a switching circuit according to an embodiment of the present invention.
Reference numerals:
the main control module 100, the key unit 110, the processing unit 120, the boosting unit 130, the switching module 200, the control unit 210, the switching unit 220, and the connection module 300.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in the following embodiments, the earphone is a wireless earphone, that is, an earphone that receives or transmits an audio signal by wireless communication. The charging box represents a charging device having a battery such as a lithium ion battery, and when the charging box is in contact with the headset, the charging box can provide a charging signal to the headset through energy stored in the battery such as the lithium ion battery. It is understood that the structure of the charging box can be adaptively set according to actual needs, and the application is not particularly limited.
Referring to fig. 1, an embodiment of the present application provides a switching circuit, which is applied to a charging box, where the charging box is used for performing a charging operation or a communication operation on an earphone. The switching circuit includes a main control module 100, a switching module 200, and a connection module 300. The main control module 100 is configured to obtain a switching instruction and generate a control signal; the switching module 200 is electrically connected with the main control module 100, and the switching module 200 is used for controlling the output voltage of the charging box according to the control signal; the connection module 300 is electrically connected to the switching module 200, and the connection module 300 is used for electrically connecting to the earphone.
Specifically, the switching instruction includes a charging instruction and a communication instruction, and the output voltage includes a charging voltage and a communication voltage. For example, the charging voltage is set to 5V, and the communication voltage is set to 3V. When the main control module 100 receives a charging instruction, the switching module 200 switches the output voltage to 5V according to a control signal sent by the main control module 100, so as to realize the charging operation of the charging box on the earphone; when the main control module 100 receives the communication instruction, the switching module 200 switches the output voltage to 3V according to the control signal sent by the main control module 100, so as to implement the communication operation between the charging box and the headset. The connection module 300 comprises at least one group of POGO PINs (POGO PINs), the headphones are inserted into the POGO PINs, and when the headphones receive a voltage of 5V through the connection module 300, the headphones are correspondingly switched to a charging state; when the earphone receives 3V voltage through the connection module 300, the earphone is correspondingly switched to a communication state, so that the charging operation and the communication operation of the charging box are switched, and the condition that a plurality of POGO PINs are designed for different functions (such as charging operation and communication operation) in the charging box is avoided. It can be understood that the identification and acquisition of the switching instruction may be adaptively set according to actual needs, for example, when it is identified that the POGO PIN is inserted into the headset and no other operation is performed, the switching instruction is determined to be a charging instruction; and when the POGO PIN inserted into the earphone is identified and the key signal is acquired, determining that the switching instruction is a communication instruction. The embodiments of the present application are not particularly limited.
The switching circuit provided in the embodiment of the present application receives the switching instruction through the main control module 100 and generates a corresponding control signal, and the switching module 200 outputs different output voltages according to the control signal, so as to perform a charging operation or a communication operation on the headset according to the different output voltages. Therefore, under the condition that POGO PIN number in the connecting module 300 does not need to be increased, the switching of the charging operation and the communication operation of the charging box to the earphone is realized, namely, the POGO PIN is shared by the charging operation and the communication operation, the cost of the charging box is reduced, and the problems of poor contact and the like of the POGO PIN are solved.
Referring to fig. 1 and 2, in some embodiments, the switching module 200 includes a control unit 210 and a switching unit 220. The control unit 210 is electrically connected with the main control module 100; the switching unit 220 is electrically connected to the control unit 210 and the connection module 300, respectively. The control unit 210 is configured to control the on state of the switching unit 220 according to a control signal. Specifically, the control unit 210 is configured to receive a control signal sent by the main control module 100, and control components in the switching unit 220 to be turned on or off according to the control signal, so as to generate different output voltages, thereby implementing switching between the charging operation and the communication operation of the charging box.
Specific components included in the control unit 210 and the switching unit 220 will be specifically described below. It is understood that the following embodiments are only exemplary, and the types of components included in the control unit 210 and the switching unit 220 are not limited.
In some embodiments, the control unit 210 includes a first voltage-controlled current element Q1, and the switching unit 220 includes a first resistor R1, a second voltage-controlled current element Q2, a second resistor R2, a third resistor R3, and a third voltage-controlled current element Q3. The gate of the first voltage-controlled current element Q1 is connected to the main control module 100, the source of the first voltage-controlled current element Q1 is grounded, and the drain of the first voltage-controlled current element Q1 is connected to the switching unit 220. One end of the first resistor R1 is electrically connected to the power output terminal of the main control module 100, and the other end of the first resistor R1 is electrically connected to the drain of the first voltage-controlled current element Q1. The source of the second voltage-controlled current element Q2 is electrically connected to one end of the first resistor R1, the gate of the second voltage-controlled current element Q2 is electrically connected to the drain of the first voltage-controlled current element Q1, and the drain of the second voltage-controlled current element Q2 is electrically connected to the connection module 300. One end of the second resistor R2 is electrically connected to the source of the second voltage-controlled current element Q2, and the other end of the second resistor R2 is electrically connected to the drain of the second resistor R2. One end of the third resistor R3 is electrically connected to the other end of the second resistor R2. The drain of the third voltage control current element Q3 is electrically connected to the other end of the third resistor R3, the gate of the third voltage control current element Q3 is electrically connected to the drain of the first voltage control current element Q1, and the source of the third voltage control current element Q3 is grounded.
Specifically, the main control module 100 is connected to a lithium ion battery, and under a normal condition, the power output end of the main control module 100 outputs 5V voltage. When the switching command indicates a charging command, the main control module 100 sends a high level signal to the gate of the first voltage-controlled current element Q1, and at this time, the first voltage-controlled current element Q1 is turned on, so that part of the components in the switching unit 220 are turned off to avoid dividing the voltage of 5V. Therefore, the output voltage output by the charging box through the connection module 300 is 5V, the charging box performs charging operation on the earphone, and the earphone is switched to a charging state. When the switching command indicates a communication command, the main control module 100 sends a low level signal to the gate of the first voltage-controlled current element Q1, and at this time, the first voltage-controlled current element Q1 is turned off, so that part of the components in the switching unit 220 are turned on, and the turned-on components divide the voltage of 5V to form a voltage of 3V. Therefore, the output voltage output by the charging box through the connection module 300 is 3V, the charging box performs communication operation on the headset, and the headset is switched to a communication state.
For example, when the switching command indicates a charging command, first controlled voltage flow element Q1 is turned on, at which time second controlled voltage flow element Q2 is turned on, and third controlled voltage flow element Q3 is turned off. Therefore, the second resistor R2 is short-circuited, the third resistor R3 is open-circuited, and the output voltage of the output module is 5V. When the switching command represents a communication command, first controlled pressure flow element Q1 is off, at which time second controlled pressure flow element Q2 is off and third controlled pressure flow element Q3 is on. Therefore, the output voltage is divided into 3V by the second resistor R2 and the third resistor R3. It can be understood that specific values of the output voltages corresponding to the charging operation and the communication operation may be adaptively selected according to actual needs, and the embodiment of the present application is not specifically limited.
Referring to fig. 2, in some embodiments, the control unit 210 further includes a fourth resistor R4 and a fifth resistor R5. One end of the fourth resistor R4 is electrically connected to the power output terminal of the main control module 100, and the other end of the fourth resistor R4 is electrically connected to the gate of the first voltage-controlled current element Q1. One end of the fifth resistor R5 is electrically connected to the other end of the fourth resistor R4, and the other end of the fifth resistor R5 is grounded. Specifically, the fourth resistor R4 is connected in series with the fifth resistor R5, and the gate of the first voltage-controlled current element Q1 is connected to the connection node between the fourth resistor R4 and the fifth resistor R5. The fourth resistor R4 is used for avoiding the phenomenon that the switching rate of the first voltage control current element Q1 is too high to cause breakdown of surrounding components under the condition of high voltage; the fifth resistor R5 is used to discharge the static electricity between the gate and the source of the first voltage control current device Q1, so as to protect the safety of the first voltage control current device Q1.
In some embodiments, the first voltage-controlled current element Q1, the second voltage-controlled current element Q2, and the third voltage-controlled current element Q3 are any one of a MOS transistor and a triode, respectively. Specifically, the first voltage-controlled flow element Q1 is an NMOS transistor, the second voltage-controlled flow element Q2 is a PMOS transistor, and the third voltage-controlled flow element Q3 is an NMOS transistor. It is understood that the specific component types of the first pressure control flow element Q1, the second pressure control flow element Q2 and the third pressure control flow element Q3 may also be adaptively set according to actual needs, and the embodiment of the present application is not particularly limited.
Referring to fig. 3, in some embodiments, the main control module 100 includes a key unit 110 and a processing unit 120. The key unit 110 is used for acquiring a switching instruction; the processing unit 120 is electrically connected to the key unit 110 and the switching module 200, respectively, and the processing unit 120 is configured to generate a control signal according to the switching instruction. Specifically, the key unit 110 is configured to obtain a communication instruction, that is, when a key of the key unit 110 is pressed, the processing unit 120 generates a corresponding control signal to switch the switching unit to the 3V output voltage, so as to implement the communication operation of the charging box on the headset.
In some embodiments, the main control module 100 further includes a voltage boosting unit 130, and the voltage boosting unit 130 is electrically connected to the processing unit 120 and the switching module 200, respectively. Specifically, the voltage boosting unit 130 is configured to change the voltage received by the switching module 200 according to the control of the processing unit 120 to meet the voltage requirement in the charging box communication operation or the charging operation. It is understood that the boosting unit 130 may also be designed integrally with the processing unit 120, and the embodiment of the present application is not particularly limited thereto.
The embodiment of the present application further provides a charging box, which includes the switching circuit described in any of the above embodiments.
It can be seen that, the contents in the foregoing switching circuit embodiment are all applicable to the present charging box embodiment, the functions specifically implemented by the present charging box embodiment are the same as those in the foregoing switching circuit embodiment, and the beneficial effects achieved by the present charging box embodiment are also the same as those achieved by the foregoing switching circuit embodiment.
The embodiment of the application also provides an audio device, which comprises the charging box and the earphone described in the embodiment. The earphone is used for being connected with the connecting module electricity of box that charges, and the earphone is used for switching into charge state or communication state according to the output voltage of box that charges.
Similarly, the contents in the above charging box embodiments are all applicable to the audio device embodiments, the functions specifically implemented by the audio device embodiments are the same as those in the above charging box embodiments, and the beneficial effects achieved by the audio device embodiments are also the same as those achieved by the above charging box embodiments.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Switching circuit is applied to the box that charges, the box that charges is used for carrying out charging operation or communication operation to the earphone, its characterized in that, switching circuit includes:
the main control module is used for acquiring a switching instruction and generating a control signal;
the switching module is electrically connected with the main control module and is used for switching the output voltage of the charging box according to the control signal;
the connection module is electrically connected with the switching module and is used for being electrically connected with the earphone.
2. The switching circuit of claim 1, wherein the switching module comprises:
the control unit is electrically connected with the main control module;
the switching unit is electrically connected with the control unit and the connecting module respectively;
the control unit is used for controlling the conducting state of the switching unit according to the control signal.
3. The switching circuit according to claim 2, wherein the control unit comprises:
the grid electrode of the first voltage-current control element is connected with the main control module, the source electrode of the first voltage-current control element is grounded, and the drain electrode of the first voltage-current control element is connected with the switching unit.
4. The switching circuit according to claim 3, wherein the switching unit comprises:
one end of the first resistor is electrically connected with the power supply output end of the main control module, and the other end of the first resistor is electrically connected with the drain electrode of the first voltage control current element;
a second voltage-current control element, wherein a source electrode of the second voltage-current control element is electrically connected with one end of the first resistor, a gate electrode of the second voltage-current control element is electrically connected with a drain electrode of the first voltage-current control element, and the drain electrode of the second voltage-current control element is electrically connected with the connection module;
one end of the second resistor is electrically connected with the source electrode of the second voltage control current element, and the other end of the second resistor is electrically connected with the drain electrode of the second resistor;
one end of the third resistor is electrically connected with the other end of the second resistor;
and the drain of the third voltage-current control element is electrically connected with the other end of the third resistor, the gate of the third voltage-current control element is electrically connected with the drain of the first voltage-current control element, and the source of the third voltage-current control element is grounded.
5. The switching circuit according to claim 3, wherein the control unit further comprises:
one end of the fourth resistor is electrically connected with the power supply output end of the main control module, and the other end of the fourth resistor is electrically connected with the grid electrode of the first voltage control current element;
and one end of the fifth resistor is electrically connected with the other end of the fourth resistor, and the other end of the fifth resistor is grounded.
6. The switching circuit according to any one of claims 3 to 5, wherein the first voltage-current control element, the second voltage-current control element, and the third voltage-current control element are any one of a MOS transistor and a triode, respectively.
7. The switching circuit of claim 6, wherein the master module comprises:
the key unit is used for acquiring the switching instruction;
and the processing unit is respectively electrically connected with the key unit and the switching module and is used for generating the control signal according to the switching instruction.
8. The switching circuit of claim 7, wherein the master module further comprises:
and the boosting unit is electrically connected with the processing unit and the switching module respectively.
9. Charging box, its characterized in that includes: a switching circuit as claimed in any one of claims 1 to 8.
10. Audio apparatus, comprising:
the charging box according to claim 9;
the earphone is used for being electrically connected with the connecting module and switching to a charging state or a communication state according to the output voltage of the charging box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211987.XU CN216599036U (en) | 2021-09-13 | 2021-09-13 | Switching circuit, charging box and audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211987.XU CN216599036U (en) | 2021-09-13 | 2021-09-13 | Switching circuit, charging box and audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599036U true CN216599036U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122211987.XU Active CN216599036U (en) | 2021-09-13 | 2021-09-13 | Switching circuit, charging box and audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216599036U (en) |
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2021
- 2021-09-13 CN CN202122211987.XU patent/CN216599036U/en active Active
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