Charging bin light load time setting method and system

Abstract

The invention discloses a charging bin light load time setting method and system, and the method comprises the steps: carrying out warehousing detection, and judging whether an earphone is placed in a charging bin or not; if it is detected that the earphone is placed in the charging bin, state detection is executed, and the operation state of the earphone is detected; setting the light load time of the charging bin based on the operation state of the earphone; charging control is performed based on the light load time. Therefore, the charging bin accurately detects whether the earphone is accurately placed and the running state of the placed earphone, flexibly sets the light load time according to the running state, ensures that the over-discharged earphone battery can obtain sufficient trickle charging duration, cannot be misjudged as full charging and cannot be powered off, and does not need to execute the same light load duration in a unified manner; and the endurance of the charging bin is prevented from being consumed due to invalid output.

Description

Technical Field

[0001] This invention relates to the field of current control technology, and in particular to a method and system for setting the light load time of a charging compartment. Background Technology

[0002] After the earbuds are placed in the charging case and closed for charging, if the measured charging current is less than a preset threshold and remains below it for a preset duration (e.g., less than 5mA for more than 3 minutes), the charging case is considered to be in a light-load state, and the earbuds' battery is determined to be fully charged. The charging case then enters a sleep state. However, if the earbuds themselves are faulty, such as the battery being over-discharged and having a voltage of 0, the battery needs to be trickled-charged to bring it back to a normal voltage before high-current charging can begin. If the trickle-charging time exceeds the preset duration, the charging case will mistakenly determine the battery is fully charged based on the light-load state and enter a sleep state. The earbuds' battery will also maintain a low voltage and will never return to normal operation.

[0003] To address these issues, a common practice in the market is to extend the duration of the charging case in a light-load state, such as to 20 or 30 minutes, to ensure that the earphone battery has sufficient time to recover to its normal voltage. However, this approach introduces a new problem. Assuming the earphone battery is fully charged, the charging case will still maintain an output current of 5mA for 30 minutes in a light-load state, consuming at least 2.5mAh of power. This will significantly shorten the battery life of a charging case with a relatively small battery capacity. Summary of the Invention

[0004] The first aspect of this embodiment discloses a method for setting the light-load time of a charging case, specifically including: Perform an in-carry check to determine if the earphones are placed in the charging case; If the earphones are found to be placed in the charging case, a status detection is performed to determine the operating status of the earphones. Based on the operating status of the earphones, the light load time of the charging case is set; Charging control is performed based on the light load time.

[0005] As an optional implementation, the charging compartment includes a load detection circuit; The load detection circuit includes a V+ terminal connected to the positive contact of the earphone and a V- terminal connected to the negative contact of the earphone. The V- terminal is grounded through a resistor R1. The first pin of comparator Q2 is connected to the V- terminal and the negative contact of the earphone to obtain the comparison voltage Vin. The second pin is connected to the reference voltage Vref. The third pin outputs the comparison level Vout1. The resistor R1 is connected in parallel between the drain and source of the field-effect transistor Q1.

[0006] As an optional implementation, the step of performing the in-charge detection to determine whether the earphones are placed in the charging case includes: Turn off the field-effect transistor Q1; The detection level Vout0 is output to the positive contact of the earphone via the V+ terminal; If the comparison level Vout1 output by the comparator Q2 is high, it is determined that the earphone is placed in the charging case; If the comparison level Vout1 output by the comparator Q2 is low, it is determined that the earphone is not placed in the charging case.

[0007] As an optional implementation, if the impedance of the earphone is R2, then when the earphone is placed in the charging case, the resistor R1 forms the comparison voltage Vin at the V- terminal; Where Vin = Vout0 / (R1 + R2) * R1.

[0008] As an optional implementation, the operating states of the headphones include at least normal operation and over-discharge shutdown.

[0009] As an optional implementation, if it is detected that the earphones are placed in the charging case, a status detection is performed to determine the operating status of the earphones, including: The headset outputs a communication level. If no feedback command is received from the headphones, the headphones are determined to be over-discharged and shut down. If a feedback command containing battery information is received from the earphone, it is determined that the earphone is operating normally.

[0010] As an optional implementation, setting the light-load time of the charging case based on the operating state of the earphones includes: If the headphones are operating normally, set the normal light load duration; If the headphones stop due to over-discharge, set a light load delay duration. The normal light load duration is shorter than the delayed light load duration.

[0011] As an optional implementation, the charging control based on the light load time includes: The headphones are charged by outputting a light load current. The polling duration determines whether the normal light load duration or the delayed light load duration has ended. If the process ends, the charging compartment will enter a sleep state.

[0012] As an optional implementation, the entry detection is triggered based on the closing action of the charging compartment lid.

[0013] The second aspect of this embodiment discloses a charging case light-load time setting system, specifically including: The load detection unit is used to perform in-charge detection to determine whether the earphones are placed in the charging case; A status detection unit is used to perform status detection and determine the operating status of the earphones when the earphones are placed in the charging case. The duration setting unit is used to set the light load time of the charging case based on the operating status of the earphones; A charging execution unit is used to perform charging control based on the light load time.

[0014] Compared with the prior art, this embodiment has the following beneficial effects: The charging case accurately detects whether the earbuds are correctly inserted and what their operating status is. It flexibly sets the light load time according to the operating status to ensure that the over-discharged earbud batteries can receive sufficient trickle charging time and will not be mistakenly judged as fully charged and disconnected. It does not need to uniformly implement the same light load time, avoiding ineffective output that wastes the charging case's battery life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the workflow of a charging case light load time setting method disclosed in this embodiment; Figure 2 This is a schematic diagram of the circuit principle of the charging compartment load detection circuit involved in the charging compartment light load time setting method disclosed in this embodiment; Figure 3 This is a schematic diagram of the system structure of a charging compartment light-load time setting system disclosed in this embodiment. Detailed Implementation

[0017] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please see Figures 1-2 This embodiment discloses a method for setting the light-load time of a charging case, including: 101. Perform an in-carry check to determine if the earphones are placed in the charging case.

[0019] In this embodiment, the entry detection is triggered based on the closing action of the charging compartment lid.

[0020] Here, closing the charging case corresponds to the user taking the earphones out of the charging case or placing them back into the charging case.

[0021] Therefore, the closing action of the charging case triggers the insertion detection to determine whether the earphones are accurately placed into the charging case and whether the positive and negative contacts of the earphones accurately contact and connect the power supply terminals of the charging case.

[0022] As an optional implementation, an in-charge detection is performed to determine whether the earphones are placed in the charging case, including: Turn off the field-effect transistor Q1; The detection level Vout0 is output to the positive contact of the earphone via the V+ terminal; If the comparison level Vout1 output by comparator Q2 is high, it is determined that the earphones are placed in the charging case; If the comparison level Vout1 output by comparator Q2 is low, it is determined that the earphones are not placed in the charging case.

[0023] In this embodiment, as Figure 2 As shown, the charging case has a load detection circuit; The load detection circuit includes a V+ terminal connected to the positive contact of the earphone, a V- terminal connected to the negative contact of the earphone, and the V- terminal grounded through a resistor R1. The first pin of comparator Q2 is connected to the V- terminal and the negative contact of the earphone to obtain the comparison voltage Vin. The second pin is connected to the reference voltage Vref. The third pin outputs the comparison level Vout1. A resistor R1 is connected in parallel between the drain and source of the field-effect transistor Q1.

[0024] In this embodiment, the impedance of the earphone is set to R2. When the earphone is placed in the charging case, the resistor R1 forms a comparison voltage Vin at the V- terminal. Where Vin = Vout0 / (R1 + R2) * R1.

[0025] Specifically, the load detection circuit determines whether the earphones are accurately placed in the charging case and whether the positive and negative contacts of the earphones accurately contact and connect the power supply terminals of the charging case.

[0026] When the earphones are connected in the charging case as a load, the comparator Q2 will output a high level, and step 102 will be executed accordingly. When the charging case is unloaded, comparator Q2 will output a low level, and the charging case will remain in standby or sleep mode.

[0027] 102. Perform status detection to determine the operating status of the headphones.

[0028] In this embodiment, if it is determined that the earphone is placed in the charging case, the operating status of the earphone is further judged, thereby selecting different light load times and charging strategies.

[0029] As an optional implementation, the communication level is output to the headphones; If no feedback command is received from the headphones, the headphones are deemed to have over-discharged and will be shut down. If the headset receives a feedback command containing battery information, it is determined that the headset is operating normally.

[0030] Specifically, the charging case outputs a communication level to the earphones. The communication level can be a short electrical signal with a specific voltage / current value, or it can be a query signal containing specific query parameters.

[0031] Understandably, if the earphones are operating normally, they will respond to the communication level and perform relevant data feedback operations. At this time, the charging case can know the detailed operating status of the earphones and determine that they are operating normally.

[0032] Conversely, if the earphones do not respond to the charging case, assuming that the earphones are accurately placed in the charging case as confirmed in step 101, it can be determined that the earphones have been over-discharged and stopped, and their voltage is insufficient to maintain any operation.

[0033] Therefore, by clearly determining the operating status of the headphones, it is possible to ensure that the corresponding charging strategy is adopted for the headphones.

[0034] 103. Based on the operating status of the earphones, set the light load time of the charging case.

[0035] In this embodiment, after the operating status of the earphones is determined, an appropriate light load time is set to ensure that the charging case's battery life is not affected.

[0036] As an optional implementation, if the headphones are running normally, set the normal light load duration; If the headphones stop working due to over-discharge, set the delay time for light load. The normal light load duration is shorter than the delayed light load duration.

[0037] Here, by setting a longer light load duration than the normal light load duration, the headphones that have stopped due to over-discharge are trickled-charged for a longer period of time. This ensures that the headphone voltage is raised to the normal range before exiting the light load state and quickly charging the headphones to ensure normal operation.

[0038] As another alternative implementation, the charging case can obtain information such as the remaining power and battery health of the earbuds based on the detailed operating status feedback from the earbuds. Based on this, it can flexibly adjust the normal light load duration, further precisely control the charging case's battery life, reduce power waste, and extend the lifespan of the earbud batteries.

[0039] 104. Perform charging control based on light load time.

[0040] In this embodiment, the light load time is considered as a stage in the charging process, and the charging compartment performs charging control accordingly.

[0041] As an optional implementation, a light load current is output to charge the headphones; Determine whether the normal light load duration or the delayed light load duration has ended based on the polling duration; If the process ends, the charging case will enter a sleep state.

[0042] Specifically, assuming the polling time is 1 minute, the charging case will perform a light load duration detection every minute until the light load duration is detected and charging ends.

[0043] As an alternative implementation, timing can be based on the built-in clock in the charging case for more accurate timing.

[0044] Compared with the prior art, this embodiment has the following beneficial effects: The charging case accurately detects whether the earbuds are correctly inserted and what their operating status is. It flexibly sets the light load time according to the operating status to ensure that the over-discharged earbud batteries can receive sufficient trickle charging time and will not be mistakenly judged as fully charged and disconnected. It does not need to uniformly implement the same light load time, avoiding ineffective output that wastes the charging case's battery life.

[0045] Example 2 Please see Figure 3 This embodiment discloses a charging case light-load time setting system, comprising: The load detection unit is used to perform in-charge detection to determine whether the earphones are placed in the charging case; The status detection unit is used to perform status detection and determine the operating status of the earphones when they are placed in the charging case. The duration setting unit is used to set the light load time of the charging case based on the operating status of the earbuds; The charging execution unit is used to perform charging control based on the light load time.

[0046] In this embodiment, the charging case uses the load detection circuit of the load detection unit to determine whether the earphones are accurately placed in the charging case. Then, the status detection unit attempts to communicate with the earphones to detect their operating status. The duration setting unit sets the corresponding light load time according to the operating status, and the charging execution unit performs charging control on the earphones based on the light load time.

[0047] Therefore, the charging case accurately detects whether the earbuds are correctly inserted and what operating state they are in. It flexibly sets the light load time according to the operating state to ensure that the over-discharged earbud batteries can get sufficient trickle charging time and will not be mistakenly judged as fully charged and disconnected. It does not need to uniformly implement the same light load time, avoiding ineffective output that wastes the charging case's battery life.

Claims

1. A method for setting the light-load time of a charging case, characterized in that, include: Perform an in-carry check to determine if the earphones are placed in the charging case; If the earphones are found to be placed in the charging case, a status detection is performed to determine the operating status of the earphones. Based on the operating status of the earphones, the light load time of the charging case is set; Charging control is performed based on the light load time.

2. The method for setting the light load time of a charging compartment according to claim 1, characterized in that, include: The charging compartment is equipped with a load detection circuit; The load detection circuit includes a V+ terminal connected to the positive contact of the earphone and a V- terminal connected to the negative contact of the earphone. The V- terminal is grounded through a resistor R1. The first pin of comparator Q2 is connected to the V- terminal and the negative contact of the earphone to obtain the comparison voltage Vin. The second pin is connected to the reference voltage Vref. The third pin outputs the comparison level Vout1. The resistor R1 is connected in parallel between the drain and source of the field-effect transistor Q1.

3. The method for setting the light load time of a charging compartment according to claim 2, characterized in that, The step of performing an in-carry detection to determine whether the earphones are placed in the charging case includes: Turn off the field-effect transistor Q1; The detection level Vout0 is output to the positive contact of the earphone via the V+ terminal; If the comparison level Vout1 output by the comparator Q2 is high, it is determined that the earphone is placed in the charging case; If the comparison level Vout1 output by the comparator Q2 is low, it is determined that the earphone is not placed in the charging case.

4. The method for setting the light load time of a charging compartment according to claim 2, characterized in that, include: set up If the impedance of the earphone is R2, then when the earphone is placed in the charging case, the resistor R1 forms the comparison voltage Vin at the V- terminal; Where Vin = Vout0 / (R1 + R2) * R1.

5. The method for setting the light load time of a charging compartment according to claim 1, characterized in that, include: The operating states of the headphones include at least normal operation and over-discharge shutdown.

6. The method for setting the light load time of a charging compartment according to claim 5, characterized in that, If it is determined that the earphones are placed in the charging case, a status detection is performed to determine the operating status of the earphones, including: The headset outputs a communication level. If no feedback command is received from the headphones, the headphones are determined to be over-discharged and shut down. If a feedback command containing battery information is received from the earphone, it is determined that the earphone is operating normally.

7. The method for setting the light load time of a charging compartment according to claim 6, characterized in that, The step of setting the light-load time of the charging case based on the operating state of the earphones includes: If the headphones are operating normally, set the normal light load duration; If the headphones stop due to over-discharge, set a light load delay duration. The normal light load duration is shorter than the delayed light load duration.

8. The method for setting the light load time of a charging compartment according to claim 7, characterized in that, The charging control based on the light load time includes: The headphones are charged by outputting a light load current. The polling duration determines whether the normal light load duration or the delayed light load duration has ended. If the process ends, the charging compartment will enter a sleep state.

9. The method for setting the light load time of a charging compartment according to claim 1, characterized in that, include: The entry detection is triggered based on the closing action of the charging compartment lid.

10. A charging case light-load time setting system, characterized in that, The system includes: The load detection unit is used to perform in-charge detection to determine whether the earphones are placed in the charging case; A status detection unit is used to perform status detection and determine the operating status of the earphones when the earphones are placed in the charging case. The duration setting unit is used to set the light load time of the charging case based on the operating status of the earphones; A charging execution unit is used to perform charging control based on the light load time.

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