CN110380480B - Earphone and control method of indicator light - Google Patents
Earphone and control method of indicator light Download PDFInfo
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- CN110380480B CN110380480B CN201910672821.2A CN201910672821A CN110380480B CN 110380480 B CN110380480 B CN 110380480B CN 201910672821 A CN201910672821 A CN 201910672821A CN 110380480 B CN110380480 B CN 110380480B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a control method of an earphone and an indicator light, wherein the earphone comprises the following steps: a battery assembly for powering the headset; the external charging management chip is used for charging the battery pack by first charging current; the built-in charging management module is used for charging the battery assembly by using a second charging current, and the total charging current is the sum of the first charging current and the second charging current; the first indicator light and the second indicator light are used for indicating the working state and the charging state of the earphone, and the external charging management chip and the internal charging management module share the first indicator light and the second indicator light; the first driving module is arranged on the built-in charging management module and used for driving the first indicator light and the second indicator light to indicate the working state or the charging state of the earphone in different modes. In the embodiment of the invention, the external charging management chip and the internal charging management module share the first indicator lamp and the second indicator lamp, so that the charging current can be increased without increasing the number of the indicator lamps.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to a control method of an earphone and an indicator light.
Background
With the increasing popularity of bluetooth headsets, and in particular active noise reduction headsets (ANC) headsets, the market has further requirements on the power consumption and the usage time of bluetooth headsets: the battery capacity is large and the charging speed is high. The original 1C charging for 2 hours cannot meet the requirements of users, and due to the development of battery technology, more and more battery quick charging technologies are applied to Bluetooth products and are expanded from basic 1C charging to higher current multiplying power of 2C, 3C and the like. For example: for a 200ma.h battery, charged with 2C, 400ma is needed for charging current, and 600mA is needed for charging current, 3C.
Most of the bluetooth headsets on the market at present are internally provided with charging management, the charging current of the bluetooth headsets is between 50mA and 300mA, and an external charging management chip (IC) is required to be added if fast charging is required. However, since the external charging management chip is separated from the chip of the bluetooth headset, the charging state is controlled by a chip different from the working state of the bluetooth headset, and usually 2 red LEDs and 2 blue LEDs are needed to respectively indicate the charging state and the working state of the bluetooth headset.
Disclosure of Invention
In order to solve the technical problems that the charging current of an earphone such as a bluetooth earphone is insufficient, the appearance of a product is changed due to the fact that the number of indicator lamps is increased when an external charging management chip is used for increasing the charging current, and the like, the embodiment of the invention provides the earphone, which comprises:
a battery assembly for powering the headset;
the external charging management chip is used for charging the battery assembly by first charging current;
the built-in charging management module is used for charging the battery assembly by using second charging current, wherein the total charging current is the sum of the first charging current and the second charging current;
the first indicator light and the second indicator light are used for indicating the working state and the charging state of the earphone, wherein the external charging management chip and the internal charging management module share the first indicator light and the second indicator light;
the first driving module is arranged on the built-in charging management module and used for driving the first indicator light and the second indicator light to indicate the working state or the charging state of the earphone in different modes.
Illustratively, a second driving module is disposed on the external charging management chip, and the second driving module is configured to drive at least one of the first indicator light and the second indicator light to be turned on or off to indicate different charging states of the headset.
Illustratively, the second driving module comprises a first pin and a second pin arranged on the external charging management chip, wherein,
the first pin is configured to be at a low potential when the battery assembly is fully charged and used for driving the first indicator light to be turned on to indicate that the charging state is charging completion, and is at a high resistance state when the battery assembly is in other states except the charging completion state;
the second pin is configured to be at a low potential when the battery pack is in charge for driving the second indicator light to light up to indicate that the charging state is in charge, and is at a high resistance state when the battery pack is in other states except the charge state.
Illustratively, the first driving module is further configured to drive the first indicator light and the second indicator light to indicate different working states of the headset in different modes when not charging.
Illustratively, one of the first indicator light and the second indicator light is configured to indicate the operating state of the headset in a different mode when the headset is charging without being powered off, and the other is configured to indicate the charging state of the headset in a different mode when the headset is charging without being powered off.
Illustratively, the first driving module comprises a first driving pin and a second driving pin arranged on the built-in charging management module, wherein,
the first and second drive pins are configured to be in a high impedance state when the headset is powered off and charging.
By way of example, it is possible to provide,
the external charging management chip is also configured to stop charging the battery assembly when the first charging current is reduced to a first cut-off current;
the built-in charge management module is further configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
Illustratively, the headset further comprises:
and the control module is used for controlling the first indicator lamp and the second indicator lamp to be turned off or turned on to indicate different charging states according to a comparison result of the second charging current and the second cut-off current, wherein if the second charging current is greater than the second cut-off current, the first indicator lamp is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cut-off current, the second indicator lamp is controlled to be turned on to indicate charging completion and control the first indicator lamp to be turned off.
The invention further provides a control method of an indicator light, the indicator light is applied to an earphone, the earphone comprises a battery assembly, an external charging management chip and an internal charging management module, the indicator light comprises a first indicator light and a second indicator light, and the control method comprises the following steps:
starting the external charging management chip and the internal charging management module to respectively charge the battery assembly with a first charging current and a second charging current, wherein the total charging current is the sum of the first charging current and the second charging current;
and according to the comparison result of the second charging current and the second cut-off current, controlling the first indicator lamp and the second indicator lamp to be turned off or turned on to indicate different charging states, wherein if the second charging current is greater than the second cut-off current, the first indicator lamp is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cut-off current, the second indicator lamp is controlled to be turned on to indicate charging completion and control the first indicator lamp to be turned off.
Illustratively, the external charging management chip is configured to stop charging the battery assembly when the first charging current decreases to a first cutoff current;
the built-in charge management module is configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
The earphone comprises an external charging management chip and an internal charging management module, wherein the external charging management chip is used for charging the battery assembly by first charging current, the internal charging management module is used for charging the battery assembly by second charging current, and the total charging current is the sum of the first charging current and the second charging current.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, like reference numbers generally indicate like parts or steps.
Fig. 1 is a schematic block diagram showing a circuit configuration of a conventional bluetooth headset;
fig. 2 is a schematic block diagram of a conventional external lithium battery charging circuit;
fig. 3 shows a schematic block diagram of a circuit configuration of a bluetooth headset in one embodiment of the present invention;
fig. 4 is a schematic block diagram showing a circuit configuration of a bluetooth headset in another embodiment of the present invention;
FIG. 5 shows a flow chart of a method of controlling indicator lights in one embodiment of the invention;
fig. 6 shows a flow chart of a control method of an indicator light in another embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.
As shown in fig. 1, which is a schematic block diagram of a circuit structure of a conventional bluetooth headset, a charging function of a conventional bluetooth headset is implemented by a charging function of a System-on-a-Chip (SOC) of the bluetooth headset. The bluetooth headset usually has two LED lamps, and the two LED lamps indicate different working states and charging states of a built-in charging management module of the bluetooth headset through different modes (normally on, slow flashing, fast flashing, alternate flashing, and the like), such as a starting state, a shutdown state, a pairing state, a standby state, a low power state, and the like; during charging, the charging state such as charging completion is shown in table 1. In table 1, LED1 is off, and LED2 is normally on indicating charging; LED1 is normally on and LED2 is off indicating that the charging is complete.
Table 1
| LED1 | LED2 | Indicating operating and charging states | |
| 1 | Go out | Chang Liang | In charging |
| 2 | Chang Liang | Extinguishment of | Completion of charging |
| 3 | Extinguishment of | Flash memory | Bluetooth pairing state |
| 4 | Go out | Slow flash | Bluetooth connection standby state |
Fig. 2 is a schematic block diagram showing a conventional external lithium battery charging circuit, which uses two other LED lamps different from a bluetooth headset to indicate a charging state, and in the circuit structure, a CHRG pin of an external charging management chip (IC) is an open-drain charging state output, and when charging is performed, a CHRG port is turned on by an internal N-channel MOSFET placed at a low-potential LED2, and when charging is completed and other states, the CHRG pin is turned off by a high-resistance LED 2. The DONE pin of the external charge management chip (IC) is the full indication output. When fully charged, the DONE port is illuminated by an internal N-channel MOSFET placed at a low potential LED 1. During charging and in other states, the DONE pin is in a high impedance state, LED1 is turned off, and the charging state of the external charging management chip corresponding to the turning on and off of the LED is shown in table 2 below.
Table 2
To sum up, if use external charging management chip to charge in order to increase charging current bluetooth headset, then need four LED lamps to indicate bluetooth headset's operating condition and external charging management chip's the charged state, can lead to bluetooth headset outward appearance to change like this, and be unfavorable for the reduction of cost.
Accordingly, in view of the above problems, one embodiment of the present invention provides a headset, comprising:
the battery pack is used for supplying power to the earphone;
the external charging management chip is used for charging the battery assembly by first charging current;
the built-in charging management module is used for charging the battery assembly by using second charging current, wherein the total charging current is the sum of the first charging current and the second charging current;
the first indicator light and the second indicator light are used for indicating the working state and the charging state of the Bluetooth headset;
the first driving module is arranged on the built-in charging management module and used for driving the first indicator light and the second indicator light to indicate the working state or the charging state of the earphone in different modes.
The earphone comprises an external charging management chip and an internal charging management module, wherein the external charging management chip is used for charging the battery assembly by first charging current, the internal charging management module is used for charging the battery assembly by second charging current, and the total charging current is the sum of the first charging current and the second charging current.
In the following, the earphone according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings, and features of the embodiments and implementations of the present invention may be combined with each other without conflict. It should be noted that the earphone of the embodiment of the present invention may be any type of earphone, such as a bluetooth earphone, an in-ear earphone, a headset, etc., and in the embodiment of the present invention, the earphone of the present invention is mainly explained and illustrated by taking the bluetooth earphone as an example.
In one embodiment, as shown in fig. 3, the bluetooth headset of the present invention includes an internal charge management module 310, an external charge management chip 320, and a battery assembly 330.
The battery module 330 is used for supplying power to the bluetooth headset to provide working voltage of the bluetooth headset, so as to ensure normal operation of the bluetooth headset, wherein the battery module 330 may be any rechargeable battery module, such as a lithium ion battery.
The built-in charge management module 310 is electrically connected to the battery assembly 330 for charging the battery assembly 330 with the second charging current, wherein the built-in charge management module 310 may be disposed on a bluetooth System On Chip (SOC), and the specific structure thereof is not limited herein. The bluetooth System On Chip (SOC) may be a circuit module integrated by a bluetooth chip as a main chip, a communication antenna, a crystal oscillator, and other circuits.
The external charging management chip 320 is electrically connected to the battery assembly 330 for charging the battery assembly 330 with a first charging current, wherein the external charging management chip 320 may be any chip with a charging function known to those skilled in the art, a pin for electrically connecting the battery assembly 330 is disposed on the external charging management chip 20, and the external charging management chip 320 and the internal charging management module 310 are used together to charge the battery assembly 330, so as to increase the charging current, for example, the total charging current is the sum of the first charging current and the second charging current, thereby achieving the purposes of shortening the charging time and achieving fast charging.
In one example, the internal charging management module and the external charging management chip are both provided with power interfaces for electrically connecting the power supply to the battery pack. The power interface may comprise a USB interface, or other suitable interface, which is electrically connected to a power source via, for example, a data line, to provide a charging voltage of, for example, 5V to the battery assembly.
Further, as shown in fig. 3, the bluetooth headset according to the embodiment of the present invention further includes a first indicator light 341 and a second indicator light 342 for indicating the working state and the charging state of the bluetooth headset, wherein the external charging management chip and the internal charging management module share the first indicator light 341 and the second indicator light 342. Optionally, the working state of the bluetooth headset includes at least one of power-on, power-off, pairing, standby and low power; the charging state includes at least one of charging and charging completion.
The first indicator Light 341 and the second indicator Light 342 may be LED (Light Emitting Diode) lights, or other suitable lights, which have the advantages of good shock and shock resistance and high reliability, and are beneficial for improving the performance of the bluetooth headset, wherein the first indicator Light 341 and the second indicator Light 342 may be different colors to clearly indicate the working state and the charging state of the bluetooth headset, for example, one of the first indicator Light 341 and the second indicator Light 342 is blue, and the other is red, or may be other colors, which is not specifically limited herein.
In one example, a first driving module is disposed in the built-in charging management module, and is used for driving the first indicator light and the second indicator light 342 to indicate different working states or charging states of the bluetooth headset in different modes. Optionally, the different modes include at least one of normally on, slow flashing, fast flashing, alternate flashing, or other modes that can be clearly distinguished by the user, for example, the first indicator light 341 is off, and the second indicator light 342 is normally on to indicate charging; the first indicator light 341 is turned on constantly, the second indicator light 342 is turned off to indicate that charging is completed, and the bluetooth pairing state can be indicated in a flash manner, the bluetooth connection standby state can be indicated in a slow flash manner, and the like.
Specifically, as shown in fig. 3, the first driving module includes a first driving pin 311 and a second driving pin 312 disposed in the built-in charge management module 310, wherein the first driving pin 311 is configured to drive a first indicator light 341 to indicate different operating states or charging states of the bluetooth headset in different modes, and the second driving pin 312 is configured to drive a second indicator light 342 to indicate different operating states or charging states of the bluetooth headset in different modes.
In one example, the first indicator light 341 and the second indicator light 342 are both light emitting diodes, wherein the first driving pin 311 is electrically connected to a negative electrode of the first indicator light 341, and the second driving pin 312 is electrically connected to a negative electrode of the second indicator light 342.
Further, the anode of the first indicator light 341 is electrically connected to the battery assembly through a load resistor 1 so that the battery assembly provides the operating voltage to the first indicator light 341, and the anode of the second indicator light 342 is electrically connected to the battery assembly through a load resistor 2 so that the battery assembly provides the operating voltage to the second indicator light 342.
In one example, as shown in fig. 3, a second driving module is provided on the external charging management chip, and the second driving module is configured to drive on or off of at least one of the first indicator lamp 341 and the second indicator lamp 342 to indicate a different charging state of the bluetooth headset, for example, to drive the first indicator lamp 341 on and the second indicator lamp 342 off to indicate that charging is completed, or to drive the second indicator lamp 342 on and the first indicator lamp 341 off to indicate charging is in progress.
More specifically, the second driving module is configured to drive the first indicator lamp 341 and the second indicator lamp 342 to be turned on or off to indicate different charging states of the bluetooth headset when the bluetooth headset is in an off state during charging, for example, to drive the first indicator lamp 341 to be turned on and the second indicator lamp 342 to be turned off to indicate that charging is completed, or to drive the second indicator lamp 342 to be turned on and the first indicator lamp 341 to be turned off to indicate charging is in progress.
In one example, as shown in fig. 3, the second driving module includes a first pin 321 and a second pin 322 disposed on the external charge management chip, for example, the first pin 321 is a DONE pin, and the second pin 322 is a CHRG pin, where the first pin 321 is configured to be at a low potential when the battery pack is fully charged for driving the first indicator light 341 to light up to indicate that the charging state is charging completion, and is at a high resistance state when the battery pack is in a state other than charging completion, so that the first indicator light 341 can be driven to light off; the second pin 322 is configured to be at a low potential for driving the second indicator light 342 to light up to indicate that the charging state is charging when the battery pack is charging, and to be at a high impedance state when the battery pack is in a state other than charging, so as to be used for driving the second indicator light 342 to extinguish.
In one example, a first control circuit (not shown) is further disposed on the external charging management chip 320, and the first control circuit is electrically connected to the first pin 321 for placing the first pin 321 at a low potential when the battery assembly is fully charged. Optionally, a second control circuit (not shown) is further disposed on the external charging management chip 320, and the second control circuit is electrically connected to the second pin 322 for placing the second pin 322 at a low potential when the battery pack is charging, and optionally, the second control circuit includes a switch tube such as an N-channel MOSFET.
Further, as shown in fig. 3, the first indicator light 341 and the second indicator light 342 are both light emitting diodes, wherein the first pin 321 is electrically connected to a negative electrode of the first indicator light 341, and the second pin 322 is electrically connected to a negative electrode of the second indicator light 342.
Since the first pin 321 is set to a low potential when the battery pack is fully charged, the circuit including the first indicator 341 is turned on, and thus the first indicator 341 is turned on, and similarly, since the second pin 322 is set to a low potential when the battery pack is charged, the circuit including the second indicator 342 is turned on, and thus the second indicator 342 is turned on.
In an example, the bluetooth headset may be set to be powered off when the bluetooth headset is charged, that is, the bluetooth system on chip is powered off, and since the working state of the bluetooth SOC and the working time of the external charging management chip are separated from each other, there is no conflict in the working logic of the indicator light, wherein the first driving pin 311 and the second driving pin 312 are configured to be in a high impedance state when the bluetooth headset is powered off and charged, so that the pin (also referred to as pin) of the bluetooth SOC and the pin (also referred to as the first pin 321 and the second pin 322) of the external charging management chip are isolated by the high impedance state of the indicator light driving pin, so that the two circuits are isolated and do not interfere with each other, and only the external charging management chip needs to drive the first indicator light 341 and the second indicator light 342 to indicate the charging state.
In another example, if the bluetooth headset is in a non-charging state, the bluetooth headset may be in an operating state at this time, and when the bluetooth headset is not being charged, that is, the external charging management chip is disconnected from the charging power supply, for example, the USB interface does not provide a voltage of 5V, at this time, both the first pin 321 and the second pin 322 of the external charging management chip are in a high impedance state, which is isolated from the first driving pin 311 and the second driving pin 312 on the internal charging management module of the bluetooth headset, and the first indicator light 341 and the second indicator light 342 are driven only through the first driving pin 311 and the second driving pin 312 to indicate different operating states of the bluetooth headset. The above working logic can also be seen from table 3 below.
Table 3
In other examples, the bluetooth headset is not powered off during charging, that is, the bluetooth SOC is not powered off (bluetooth can work normally during charging), and such an operation mode is to make each LED not conflict in operation logic, for example, one of the first indicator light 341 and the second indicator light 342 is configured to indicate an operation state of the bluetooth headset in a different mode when the bluetooth headset is charged without being powered off, and the other is configured to indicate a charging state of the bluetooth headset in a different mode when the bluetooth headset is charged without being powered off. More specifically, as shown in fig. 3, during charging, the second pin 322 of the external charging management chip drives the second indicator light 342 to light up for indicating charging, and the first driver pin 311 on the internal charging management module drives the first indicator light 341 to display different operating states of the bluetooth headset in different modes, for example, indicating a bluetooth pairing state with a flash, indicating a bluetooth connection standby state with a slow flash, and the like.
The bluetooth headset may include other functional elements, such as an earpiece, a microphone, etc., for enabling a user to hear sounds, to make a call, etc., in addition to the structure described herein.
In summary, the earphone according to the embodiments of the present invention, for example, the bluetooth headset, has the function of increasing the charging current without increasing the number of LED indicator lamps shared by the internal charging management module and the external charging management chip of the bluetooth System On Chip (SOC) of the earphone, for example, the bluetooth headset, and in addition, the pin of the bluetooth SOC and the pin of the external charging management chip are isolated by the high impedance state of the driving pin (pin) on the internal charging management module, so that the two circuits are isolated from each other. The charging state indication and the Bluetooth working state indication of the indicator lamp such as an LED do not interfere with each other by isolating the working time of the indicator lamp (divided into two working states of charging and non-charging).
In another embodiment, as shown in fig. 4, the bluetooth headset of the embodiment of the present invention includes an internal charging management module 310, an external charging management chip 320, and a battery assembly 330.
The battery module 330 is used for supplying power to the bluetooth headset to provide working voltage of the bluetooth headset, so as to ensure normal operation of the bluetooth headset, wherein the battery module 330 may be any rechargeable battery module, such as a lithium ion battery.
The built-in charge management module 310 is electrically connected to the battery assembly 330 for charging the battery assembly 330 with the second charging current, wherein the built-in charge management module 310 may be disposed on a bluetooth System On Chip (SOC), and a specific structure thereof is not limited herein. The bluetooth System On Chip (SOC) may be a circuit module integrated by a bluetooth chip as a main chip, a communication antenna, a crystal oscillator, and other circuits.
The external charging management chip 320 is electrically connected to the battery assembly 330 for charging the battery assembly 330 with a first charging current, wherein the external charging management chip 320 may be any chip with a charging function known to those skilled in the art, a pin for electrically connecting the battery assembly 330 is disposed on the external charging management chip 20, and the external charging management chip 320 and the internal charging management module 310 are used together to charge the battery assembly 330, so as to increase the charging current, for example, the total charging current is the sum of the first charging current and the second charging current, thereby achieving the purposes of shortening the charging time and achieving fast charging.
In one example, the internal charging management module and the external charging management chip are both provided with power interfaces for electrically connecting the power supply to the battery pack. The power interface may comprise a USB interface, or other suitable interface, electrically connected to a power source via, for example, a data line, to provide a charging voltage of, for example, 5V to the battery assembly.
Further, as shown in fig. 4, the bluetooth headset according to the embodiment of the present invention further includes a first indicator light 341 and a second indicator light 342 for indicating the working state and the charging state of the bluetooth headset, wherein the external charging management chip and the internal charging management module share the first indicator light 341 and the second indicator light 342. Optionally, the working state of the bluetooth headset includes at least one of power-on, power-off, pairing, standby and low power; the charging state includes at least one of charging and charging completion.
The first indicator Light 341 and the second indicator Light 342 may be LED (Light Emitting Diode) lights, or other suitable lights, which have the advantages of good shock and shock resistance and high reliability, and are beneficial for improving the performance of the bluetooth headset, wherein the first indicator Light 341 and the second indicator Light 342 may be different colors to clearly indicate the working state and the charging state of the bluetooth headset, for example, one of the first indicator Light 341 and the second indicator Light 342 is blue, and the other is red, or may be other colors, which is not specifically limited herein.
In one example, a first driving module is provided in the built-in charging management module, and is used for driving the first indicator light 341 and the second indicator light 342 to indicate different working states or charging states of the bluetooth headset in different modes. Optionally, the different modes include at least one of normally on, slow flashing, fast flashing, alternate flashing, or other modes that can be clearly distinguished by the user, for example, the first indicator light 341 is off, and the second indicator light 342 is normally on to indicate charging; the first indicator light 341 is turned on constantly, and the second indicator light 342 is turned off to indicate that the charging is completed, and may indicate the bluetooth pairing state by flash, indicate the bluetooth connection standby state by slow flash, and the like.
Specifically, as shown in fig. 4, the first driving module includes a first driving pin 311 and a second driving pin 312 disposed in the built-in charge management module 310, wherein the first driving pin 311 is configured to drive a first indicator light 341 to indicate different operating states or charging states of the bluetooth headset in different modes, and the second driving pin 312 is configured to drive a second indicator light 342 to indicate different operating states or charging states of the bluetooth headset in different modes.
In one example, the first indicator light 341 and the second indicator light 342 are both light emitting diodes, wherein the first driving pin 311 is electrically connected to a negative electrode of the first indicator light 341, and the second driving pin 312 is electrically connected to a negative electrode of the second indicator light 342.
Further, the anode of the first indicator light 341 is electrically connected to the battery assembly through a load resistor 1 so that the battery assembly provides the operating voltage to the first indicator light 341, and the anode of the second indicator light 342 is electrically connected to the battery assembly through a load resistor 2 so that the battery assembly provides the operating voltage to the second indicator light 342.
The difference between the embodiment shown in fig. 4 and the embodiment shown in fig. 3 is that the first indicator light 341 and the second indicator light 342 are no longer connected to the external charging management chip 320, but are only connected to the internal charging management module 310, and the internal charging management module 310 of the bluetooth headset drives the first indicator light 341 and the second indicator light 342 to indicate the working state and the charging state of the bluetooth headset, when the bluetooth headset is powered off during charging, the bluetooth headset does not have the working state at this time, only displays the charging state, and whether the battery is in the charging state or the charging is completed is controlled by the internal charging management module 310. For example, as shown in table 4 below.
Table 4
In summary, the internal charging management module and the external charging management chip of the bluetooth System On Chip (SOC) of the bluetooth headset according to the embodiment of the present invention share the indicator such as the LED to increase the charging current without increasing the number of the LED indicators, and the charging status indication and the bluetooth status indication of the indicator such as the LED do not interfere with each other by isolating the working time of the indicator (divided into two working states of charging and non-charging).
In yet another embodiment, continuing with fig. 4, the external charging management chip 320 may be further configured to stop charging the battery assembly when the first charging current decreases to the first off current; the built-in charge management module 310 is further configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
In one example, the bluetooth headset further includes a control module (not shown) for controlling the first indicator lamp 341 and the second indicator lamp 342 to be turned off or turned on to indicate different charging states according to a comparison result of the second charging current and the second cutoff current, wherein if the second charging current is greater than the second cutoff current, the first indicator lamp 341 is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cutoff current, the second indicator lamp 342 is controlled to be turned on to indicate charging completion and the first indicator lamp 341 is controlled to be turned off. The Control module may be configured in the internal charging management, and optionally, the Control module may be a Micro-programmed Control Unit (MCU) or a similar structure, which is not limited herein.
The battery pack is charged in parallel through the external charging management chip and the internal charging management module, the charging current is reasonably distributed, so that the first cut-off current of the external charging management chip is larger than the second cut-off current of the internal charging management module, when the charging current of the external charging management chip is reduced to the cut-off current, the external charging management chip stops charging, the first cut-off current of the internal charging management module is not reached yet, the external charging management chip continues to charge the battery pack, the battery pack is fully charged until the charging current of the external charging management chip is reduced to the second cut-off current, the control module controls the second indicator light 342 to be turned on to indicate that charging is completed, and the first indicator light 341 is controlled to be turned off.
According to the Bluetooth headset provided by the embodiment of the invention, the Bluetooth state indication and the charging state indication can be realized only by two indicator lamps, so that the cost is saved, and the circuit is simpler.
As shown in fig. 5, an embodiment of the present invention further provides a method for controlling an indicator light, which may be implemented based on the structure of the bluetooth headset in the foregoing embodiment, and specifically, the method includes the following steps:
in step S501, the external charging management chip and the internal charging management module are started to charge the battery pack with a first charging current and a second charging current, respectively, where a total charging current is a sum of the first charging current and the second charging current, for example, if the total charging current is a, a charging current allocated to the external charging management chip is B, and a charging current allocated to the internal charging management module is C, then a = B + C.
In step S502, according to a comparison result between the second charging current and the second cutoff current, the first indicator lamp and the second indicator lamp are controlled to be turned off or turned on to indicate different charging states, wherein if the second charging current is greater than the second cutoff current, the first indicator lamp is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cutoff current, the second indicator lamp is controlled to be turned on to indicate charging completion and the first indicator lamp is controlled to be turned off.
The external charging management chip is configured to stop charging the battery assembly when the first charging current is reduced to a first cut-off current; the built-in charging management module is configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
In a charging cycle, as shown in fig. 6, when the first charging current of the external charging management chip is reduced to the first cut-off current, the external charging management chip stops charging, the internal charging management module continues charging, controls the first indicator lamp to be continuously turned on to indicate that charging is in progress, then determines whether the second charging current of the internal charging management chip is reduced to the second cut-off current, and when the second charging current of the internal charging management chip is reduced to the second cut-off current, controls the first indicator lamp to be turned off, and controls the second indicator lamp to be turned on to indicate that charging is completed. Alternatively, the first indicator light may be a red light and the second indicator light a blue light.
According to the control method provided by the embodiment of the invention, the Bluetooth state indication and the charging state indication can be realized only by two indicator lamps, so that the cost is saved, and the circuit of the Bluetooth headset is simpler.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the invention thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.
Claims (10)
1. An earphone, characterized in that the earphone comprises:
a battery assembly for powering the headset;
the external charging management chip is used for charging the battery assembly by first charging current;
the built-in charging management module is used for charging the battery assembly by using a second charging current, wherein the total charging current is the sum of the first charging current and the second charging current;
the first indicator light and the second indicator light are used for indicating the working state and the charging state of the earphone, wherein the external charging management chip and the internal charging management module share the first indicator light and the second indicator light;
the first driving module is arranged on the built-in charging management module and used for driving the first indicator light and the second indicator light to indicate the working state or the charging state of the earphone in different modes.
2. The headset of claim 1, wherein a second driver module is disposed on the external charging management chip, the second driver module configured to drive on or off of at least one of the first and second indicator lights to indicate a different charging state of the headset.
3. The headset of claim 2,
the second driving module comprises a first pin and a second pin arranged on the external charging management chip, wherein,
the first pin is configured to be at a low potential when the battery assembly is fully charged and used for driving the first indicator light to light up to indicate that the charging state is charging completion, and is at a high resistance state when the battery assembly is in other states except the charging completion state;
the second pin is configured to be at a low potential when the battery pack is in charge for driving the second indicator light to light up to indicate that the charging state is in charge, and is at a high resistance state when the battery pack is in other states except the charge state.
4. The headset of claim 1, wherein the first driver module is further configured to drive the first indicator light and the second indicator light in different modes to indicate different operating states of the headset when not charging.
5. The headset of claim 1, wherein one of the first indicator light and the second indicator light is configured to indicate an operational status of the headset in a different mode when the headset is charging without powering off, and the other is configured to indicate a charging status of the headset in a different mode when the headset is charging without powering off.
6. The headset of claim 1, wherein the first driver module comprises a first driver pin and a second driver pin disposed on the built-in charge management module, wherein,
the first and second drive pins are configured to be in a high impedance state when the headset is powered off and charging.
7. The headset of claim 1,
the external charging management chip is also configured to stop charging the battery assembly when the first charging current is reduced to a first cut-off current;
the built-in charge management module is further configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
8. The headset of claim 7, further comprising:
and the control module is used for controlling the first indicator lamp and the second indicator lamp to be turned off or turned on to indicate different charging states according to a comparison result of the second charging current and the second cut-off current, wherein if the second charging current is greater than the second cut-off current, the first indicator lamp is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cut-off current, the second indicator lamp is controlled to be turned on to indicate charging completion and control the first indicator lamp to be turned off.
9. A control method of an indicator light is characterized in that the indicator light is applied to an earphone, the earphone comprises a battery assembly, an external charging management chip and an internal charging management module, the indicator light comprises a first indicator light and a second indicator light, and the control method comprises the following steps:
starting the external charging management chip and the internal charging management module to respectively charge the battery assembly by a first charging current and a second charging current, wherein the total charging current is the sum of the first charging current and the second charging current;
and according to the comparison result of the second charging current and the second cut-off current, controlling the first indicator lamp and the second indicator lamp to be turned off or turned on to indicate different charging states, wherein if the second charging current is greater than the second cut-off current, the first indicator lamp is controlled to be continuously turned on to indicate charging, and if the second charging current is equal to the second cut-off current, the second indicator lamp is controlled to be turned on to indicate charging completion and control the first indicator lamp to be turned off.
10. The control method of claim 9, wherein the external charging management chip is configured to stop charging the battery assembly when the first charging current decreases to a first off current;
the built-in charging management module is configured to stop charging the battery assembly when the second charging current decreases to a second cutoff current, wherein the first cutoff current is greater than the second cutoff current.
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| CN201910672821.2A CN110380480B (en) | 2019-07-24 | 2019-07-24 | Earphone and control method of indicator light |
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| CN201910672821.2A CN110380480B (en) | 2019-07-24 | 2019-07-24 | Earphone and control method of indicator light |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015010261A1 (en) * | 2013-07-23 | 2015-01-29 | 吉瑞高新科技股份有限公司 | Usb charger for electronic cigarette |
| CN206024065U (en) * | 2016-09-20 | 2017-03-15 | 江苏省地震局 | A kind of earthquake emergency bone conduction acoustic control earphone |
| CN107318196A (en) * | 2017-08-16 | 2017-11-03 | 惠州Tcl移动通信有限公司 | The indicator light circuit and its control method of a kind of mobile terminal |
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2019
- 2019-07-24 CN CN201910672821.2A patent/CN110380480B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015010261A1 (en) * | 2013-07-23 | 2015-01-29 | 吉瑞高新科技股份有限公司 | Usb charger for electronic cigarette |
| CN206024065U (en) * | 2016-09-20 | 2017-03-15 | 江苏省地震局 | A kind of earthquake emergency bone conduction acoustic control earphone |
| CN107318196A (en) * | 2017-08-16 | 2017-11-03 | 惠州Tcl移动通信有限公司 | The indicator light circuit and its control method of a kind of mobile terminal |
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