CN113346600B - Charging method of master-slave charging equipment and master-slave charging equipment - Google Patents

Charging method of master-slave charging equipment and master-slave charging equipment Download PDF

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CN113346600B
CN113346600B CN202110910213.8A CN202110910213A CN113346600B CN 113346600 B CN113346600 B CN 113346600B CN 202110910213 A CN202110910213 A CN 202110910213A CN 113346600 B CN113346600 B CN 113346600B
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charging
slave
power
circuit
power supply
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CN113346600A (en
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赖哲人
戴兴科
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Shenzhen Weiyuan Semiconductor Co ltd
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Shenzhen Weiyuan Semiconductor Co ltd
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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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H04R1/1025—Accumulators or arrangements for charging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a charging method of a master-slave charging device and the master-slave charging device, wherein the master-slave charging device comprises a master charging device and at least one slave powered device, the slave powered device can configure a charging interruption condition according to the actual situation, when the charging interruption condition is met, the charging is stopped so that the master charging device establishes communication with the slave powered device, the slave powered device can feed back the charging parameter of the slave powered device after the communication is established, so that the master charging device can perform charging control according to the charging parameter fed back by the slave powered device in time, the slave powered device realizes the conversion from passive power receiving to active power receiving, and the charging efficiency of the slave powered device is improved.

Description

Charging method of master-slave charging equipment and master-slave charging equipment
Technical Field
The invention belongs to the technical field of charging, and particularly relates to a charging method of a master-slave charging device and the master-slave charging device.
Background
In order to improve charging efficiency and safety, the master charging device communicates with the slave power receiving device in a set time period or according to a preset program, and adjusts charging parameters according to a charging state of the slave power receiving device, so as to output a charging power supply required by the slave power receiving device.
During charging, the master and slave charging devices usually share a power transmission element between the master and slave charging devices in order to reduce signal lines, and the power transmission element can be a power line, a metal contact and the like, i.e., during charging, the charging power is output through the power transmission element, during communication, the output of the charging power is cut off, and signal loading is performed through the power transmission element to realize bidirectional communication.
However, when the above charging method is adopted, the power transmission element is shared, the charging process and the communication process are correspondingly switched in a suspension manner according to the program of the main charging device, when the suspension charging frequency is too high, the charging time is prolonged, and the charging efficiency is reduced, and when the suspension charging frequency is too low, the communication is not timely enough, so that the charging parameters cannot be timely and effectively adjusted, and the charging is abnormal.
Therefore, the conventional charging method has a problem of low charging efficiency from the power receiving apparatus.
Disclosure of Invention
The invention aims to provide a charging method of a master-slave charging device, aiming at improving the charging efficiency of a slave power receiving device.
A first aspect of an embodiment of the present invention provides a charging method for a master-slave charging device, where the master charging device is connected to at least one slave powered device through a power transmission element, and the charging method for the master-slave charging device includes:
the slave power receiving equipment stops charging when meeting a preset interrupt condition so that the charging current of the charging power supply input by the power transmission piece is smaller than a preset current threshold;
and the main charging equipment triggers an interrupt function when the charging current of the charging power supply is smaller than the preset current threshold, and switches off the output of the charging power supply and establishes communication with the slave power receiving equipment through the power transmission piece under a preset condition.
A second aspect of an embodiment of the present invention provides a master-slave charging device, including a master charging device and at least one slave powered device, where the master charging device includes:
a discharge circuit for outputting a charging power;
a main controller connected to the discharge circuit, the main controller being configured with a first charge interruption function and a communication function; the charge interruption function is: when the charging current of the charging power supply is smaller than a preset current threshold, the output of the charging power supply is cut off according to a preset condition; the communication function is as follows: establishing communication with the slave powered device after the charging power supply turns off the output;
the slave power receiving apparatus includes:
a first charging circuit for receiving the charging power;
the first energy storage circuit is connected with the power output end of the first charging circuit; and the number of the first and second groups,
a slave controller configured with a second charge interruption function, the second charge interruption function being: and stopping charging when the slave powered device meets a preset interrupt condition so that the current of the charging power supply is smaller than the preset current threshold.
In one embodiment, the discharge circuit includes:
the power output end and the controlled end of the power conversion circuit are respectively the power output end and the controlled end of the discharge circuit, and the power conversion circuit is triggered by the control signal of the main controller to output the charging power supply or switch off the output;
and the current detection circuit is respectively connected with the power output end of the power conversion circuit and the main controller, and triggers and outputs an interrupt signal to the main controller when the current of the charging power supply is smaller than a preset current, so that the main controller triggers the first charging interrupt function.
In one embodiment, the primary charging device further comprises:
the power supply end of the second energy storage circuit is connected with the power supply input end of the discharge circuit;
the power supply output end of the second charging circuit is connected with the power supply end of the second energy storage circuit, and the second charging circuit is used for acquiring a direct current power supply output by external charging equipment and converting the direct current power supply output by the external charging equipment and outputting the direct current power supply to the second energy storage circuit for energy storage;
and the charging interface is connected with the power input end of the second charging circuit and is used for connecting the external charging equipment.
In one embodiment, the first tank circuit is a first battery and the second tank circuit is a second battery.
In one embodiment, the primary charging device further comprises:
a first power contact connected to a power output of the discharge circuit;
a first ground contact;
the slave power receiving apparatus further includes:
the second power supply contact is connected with the power supply input end of the first charging circuit and is used for being connected with the first power supply contact;
a second ground contact for connecting to the first ground contact.
In one embodiment, the discharge circuit is electrically connected to an interrupt signal terminal of the main controller through an interrupt signal line.
In one embodiment, the slave controller is connected with an enable signal terminal of the first charging circuit through an enable signal line.
In one embodiment, the primary charging device is a headset charging bay and the secondary powered device is a TWS headset.
In one embodiment, the number of TWS headphones is 2.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: based on the application, in an actual application scenario, the slave powered device can configure a charging interruption condition according to an actual situation, for example, the charging parameter is abnormal, when the charging interruption condition is met, charging is stopped so that the master charging device establishes communication with the slave powered device, the slave powered device can feed back the charging parameter of the slave powered device after the communication is established, so that the master charging device can perform charging control in time according to the charging parameter fed back from the slave powered device, the slave powered device realizes that passive power receiving is converted into active power receiving, and the charging efficiency of the slave powered device is improved.
Drawings
Fig. 1 is a schematic flowchart of a charging method for a master-slave charging device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a master-slave charging device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second structure of a master-slave charging device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a master-slave charging device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a fourth structure of a master-slave charging device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The embodiment of the present invention provides a charging method for a master-slave charging device, wherein the master charging device 100 is connected to at least one slave power receiving device 200 through a power transmission device, the power transmission device may be a power line, a metal contact, and the like, the master charging device 100 and the slave power receiving device 200 perform charging or communication through the power transmission device, the master charging device 100 outputs a charging power with a corresponding size to the slave power receiving device 200, so that the slave power receiving device 200 performs charging and energy storage, and the master-slave charging device may be a charging module and a corresponding electronic device, such as an adapter and a mobile phone, an earphone charging chamber and an earphone, and other combined devices.
In order to improve the charging efficiency, as shown in fig. 1, the charging method of the master-slave charging device includes:
in step S10, the slave power receiving apparatus 200 stops charging when the preset interrupt condition is satisfied, so that the charging current of the charging power input by the power transmission device is smaller than the preset current threshold.
The slave power receiving device 200 may configure a charging interruption condition according to an actual situation, for example, the charging parameter is abnormal, stop charging when the charging interruption condition is satisfied, switch to a state to be communicated, and cause the charging power input by the power transmission device to be smaller than the preset current threshold by controlling the internal circuit to be turned off correspondingly, wherein the charging power input by the power transmission device may be smaller than the preset current threshold by controlling the internal charging circuit to stop working or controlling the internal switching circuit to be turned off.
In step S20, the master charging apparatus 100 triggers the interrupt function when the charging current of the charging power supply is smaller than the preset current threshold, and turns off the output of the charging power supply under a predetermined condition, and establishes communication with the slave power receiving apparatus 200 through the power transmission member.
The magnitude of the charging current is the communication triggering condition of the main charging device 100, the main charging device 100 detects the charging current through the current detection circuit of the discharging circuit or the current detection circuit additionally arranged in the main charging device 100, and knows that the slave charging device requests communication when detecting that the charging current is smaller than the preset current threshold, and triggers the interrupt function, and simultaneously, according to the preset condition in the main charging device, the output of the charging power supply is turned off at the set time, the output of the charging power supply can be immediately turned off when detecting that the charging current is smaller than the preset current threshold, or the output of the charging power supply is turned off after processing the current task, the main charging device 100 is switched to the communication state after the output of the charging power supply is turned off, so that the power transmission element is switched to the communication signal line, and communication is established between the power transmission element and the slave charging device 200, and the slave charging parameter of the slave charging device 200 can be fed back after the communication is established, the main charging device 100 can perform charging control in time according to the charging parameter fed back from the slave power receiving device 200, for example, stop charging, adjust the charging parameter, and the like, so that the slave power receiving device 200 realizes conversion from passive power receiving to active power receiving, which is beneficial to improving the charging efficiency of the slave power receiving device 200.
Further, based on the charging method of the master-slave charging device, an embodiment of the present invention provides a master-slave charging device, where the master-slave charging device includes a master charging device 100 and at least one slave powered device 200, the master charging device 100 outputs a charging power source with a corresponding size to the slave powered device 200, so as to charge and store energy in the slave powered device 200, and the master-slave charging device may be a charging module and a corresponding electronic device, such as an adapter and a mobile phone, an earphone charging chamber and an earphone.
As shown in fig. 2, the main charging device 100 includes a discharging circuit 110 and a main controller 120, the main controller 120 is connected to an interrupt signal terminal, a controlled terminal and a power output terminal of the discharging circuit 110, respectively, wherein the discharging circuit 110 is connected to the main controller 120 through an interrupt signal line L1, the discharging circuit 110 is configured to output a charging power source, and simultaneously, monitor a current magnitude of the charging power source, and trigger and output an interrupt signal to the main controller 120 through an interrupt signal line L1 when the current of the charging power source is smaller than a preset current threshold, the main controller 120 is configured with a first charging interrupt function and a communication function, and when receiving the interrupt signal, execute the first charging interrupt function, where the first charging interrupt function is: when the charging current of the charging power supply is smaller than the preset current threshold, the output of the charging power supply of the discharging circuit 110 is turned off according to the preset condition, the output of the charging power supply can be turned off immediately when the charging current is detected to be smaller than the preset current threshold, or the output of the charging power supply is turned off after the current task is processed, and then a communication function is executed, wherein the communication function is as follows: after the first charging interrupt function is triggered, the master controller 120 switches to a communication state and initiates a communication request, and establishes communication with the slave power receiving apparatus 200 through a power transmission element, which may be a power line, a metal contact, or the like, acquires a charging parameter fed back from the power receiving apparatus 200 after establishing communication, and controls the discharging circuit 110 to adjust and output a corresponding required charging power according to the charging parameter, or to cut off the output.
The slave powered device 200 includes a first charging circuit 210, a first tank circuit 220, and a slave controller 230, a power input terminal of the first charging circuit 210 is configured to be connected to the power output terminal of the discharging circuit 110 and receive a charging power, a power output terminal of the first charging circuit 210 is connected to a power terminal of the first tank circuit 220, an enable signal terminal of the first charging circuit 210, the power input terminal, and the power terminal of the first tank circuit 220 are further connected to a signal terminal of the slave controller 230, respectively, and the enable signal terminal of the first charging circuit 210 is connected to the signal terminal of the slave controller 230 through an enable signal line L2.
The charging power source outputs to the first energy storage circuit 220 after the power source conversion of the first charging circuit 210, so as to store energy for charging, and the working power source is obtained from the controller 230 through the first energy storage circuit 220, meanwhile, the charging state of the first energy storage circuit 220 is monitored, and the controller 230 is configured with a second charging interruption function, and the second charging interruption function is: when the slave powered device meets a preset interrupt condition, the first charging circuit 210 is controlled to stop charging, that is, when communication is required, the slave controller 230 actively outputs a control signal to an enable signal terminal of the first charging circuit 210 through an enable signal line L2 to control the first charging circuit 210 to stop charging, that is, current between the discharging circuit 110 and the first charging circuit 210 is reduced to zero, the current of the charging power supply is smaller than a preset current, the discharging circuit 110 triggers and outputs an interrupt signal to the master controller 120, the master controller 120 turns off the output of the charging power supply of the discharging circuit 110 according to a preset condition, and after controlling the discharging circuit 110 to turn off the output, the master controller 230 establishes communication through a power transmission element, and performs interaction and adjustment output of charging parameters.
The discharging circuit 110 may adopt different switching power supply circuits, such as a voltage boosting circuit, a voltage reducing circuit, a voltage boosting circuit, and the like, and is set according to the charging parameters of the slave power receiving device 200.
In this embodiment, the slave power receiving device 200 may configure a preset interrupt condition according to an actual situation, stop charging when the preset interrupt condition is met so that the master charging device 100 establishes communication with the slave power receiving device, and the slave power receiving device 200 may feed back its own charging parameter after the communication is established, so that the master charging device 100 may perform charging control according to the charging parameter fed back from the slave power receiving device 200 in time, and the slave power receiving device 200 implements conversion from passive power receiving to active power receiving, which is beneficial to improving the charging efficiency of the slave power receiving device.
As shown in fig. 3, in an embodiment, the discharging circuit 110 includes a power conversion circuit 111 and a current detection circuit 112, the power conversion circuit 111 performs a power conversion output operation of the discharging circuit 110 according to a control signal of the main controller 120, in a normal charging state, the power conversion circuit 111 outputs a charging power or turns off the charging power according to the control signal, the current detection circuit 112 performs a current monitoring operation, a power output end and a controlled end of the power conversion circuit 111 are respectively a power output end and a controlled end of the discharging circuit 110, and the current detection circuit 112 is respectively connected to the power output end of the power conversion circuit 111 and the main controller 120.
During operation, when the slave controller 230 actively controls the first charging circuit 210 to cut off charging, the current detection circuit 112 detects that the current of the charging power supply is smaller than the preset current threshold, and outputs an interrupt signal to the master controller 120, the master controller 120 triggers and outputs a shutdown control signal to the power conversion circuit 111 according to a corresponding time of a predetermined condition, and the power conversion circuit 111 stops conversion and cuts off output.
As shown in fig. 4, in one embodiment, the main charging device 100 further includes a second tank circuit 130, a second charging circuit 140, and a charging interface 150, wherein a power supply terminal of the second tank circuit 130 is connected to the power supply input terminal of the discharging circuit 110, a power supply output terminal of the second charging circuit 140 is connected to the power supply terminal of the second tank circuit 130, and the charging interface 150 is connected to the power supply input terminal of the second charging circuit 140 and is used for connecting an external charging device.
The main charging device 100 obtains a dc power input by an external charging device through the charging interface 150, and outputs the dc power to the second energy storage circuit 130 for charging and energy storage through the conversion of the second charging circuit 140, and the second energy storage circuit 130 is connected with the first charging circuit 210 of the TWS headset through the discharging circuit 110, so that the second energy storage circuit 130 supplies power to the first energy storage circuit 220.
In one embodiment, the first tank circuit 220 and the second tank circuit 130 are batteries, wherein the second tank circuit 130 is a high-capacity battery, the first tank circuit 220 is a low-capacity battery, and the high-capacity battery charges the low-capacity battery through the discharging circuit 110 and the first charging circuit 210.
The first charging circuit 210 and the second charging circuit 140 may be different types and structures of power conversion circuits, and are set correspondingly according to parameters of the first tank circuit 220 and the second tank circuit 130.
As shown in fig. 5, in one embodiment, the main charging device 100 further includes:
a first power contact P1, the first power contact P1 being connected to the power output of the discharge circuit 110;
a first ground contact D1;
the slave power receiving apparatus 200 further includes:
a second power contact P2, the second power contact P2 being connected to the power input of the first charging circuit 210 and being adapted to be connected to the first power contact P1;
the second grounding contact D2 and the second grounding contact D2 are used for connecting the first grounding contact D1.
In this embodiment, the power transmission element includes two pairs of metal contacts, that is, a first power contact P1 and a first ground contact D1, and a second power contact P2 and a second ground contact D2, when the master charging device 100 charges the slave power receiving device 200, the first power contact P1 and the first ground contact D1 are correspondingly connected to the second power contact P2 and the second ground contact D2 one by one, so as to implement transmission of the charging power, and meanwhile, during communication, the master controller 120 and the slave controller 230 are communicatively connected through the first power contact P1 and the second power contact P2, so as to perform interaction of charging parameters.
In one embodiment, the master charging device 100 is a headset charging chamber, the slave power receiving device 200 is a TWS headset, the headset charging chamber is electrically connected to the TWS headset to provide charging power for the TWS headset, the master controller 120 is a charging controller of the headset charging chamber, the discharging circuit 110 is a power circuit inside the headset charging chamber, the slave controller 230 is a driving control unit of the TWS headset, for charging management, terminal device connection, etc. of the TWS headset, the first energy storage circuit 220, i.e. the battery, is an energy storage unit inside the TWS headset, the first charging circuit 210 is a charging management circuit of a battery, the first power contact P1 and the first ground contact D1 are discharging contacts of a charging chamber of the headset, the second power contact P2 and the second ground contact D2 are charging contacts of the TWS headset, and the discharging contacts and the charging contacts are connected to realize charging and discharging and communication interaction.
In one embodiment, the number of the TWS earphones is 2, and during charging, the charging contacts of the two TWS earphones are respectively connected with the discharging contact of the charging bin and respectively perform switching operation of a communication mode and a charging mode with the charging bin.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (8)

1. A master-slave charging apparatus comprising a master charging apparatus and at least one slave powered apparatus that are connected and charged or communicate through a power transmission member, characterized in that the master charging apparatus comprises:
the discharging circuit is connected with the power transmission piece and used for outputting a charging power supply;
a main controller connected to the discharge circuit and the power transmission member, the main controller being configured with a first charge interruption function and a communication function; the first charge interruption function is: when the charging current of the charging power supply is smaller than a preset current threshold, the output of the charging power supply is cut off according to a preset condition; the communication function is as follows: switching to a communication state and initiating a communication request and establishing communication with the slave powered device after the charging power supply is turned off and output;
the slave power receiving apparatus includes:
the first charging circuit is connected with the power transmission piece and is used for receiving the charging power through the power transmission piece;
the first energy storage circuit is connected with the power output end of the first charging circuit; and the number of the first and second groups,
the slave controller is connected with the power transmission piece and the power output end of the first charging circuit, and is configured with a second charging interruption function, wherein the second charging interruption function is as follows: stopping charging when the slave powered device meets a preset interrupt condition so that the current of the charging power supply is smaller than the preset current threshold;
the power transmission piece comprises a first power contact and a first grounding contact which are arranged on the main charging equipment, and a second power contact and a second grounding contact which are arranged on the slave power receiving equipment;
the first power supply contact is connected with the power supply output end of the discharge circuit;
the second power supply contact is connected with the power supply input end of the first charging circuit and is used for being connected with the first power supply contact;
the second grounding contact is used for connecting the first grounding contact;
when the main charging device and the slave power receiving device are charged, the first power supply contact and the first grounding contact are correspondingly connected with the second power supply contact and the second grounding contact one by one, so that the transmission of the charging power supply is realized;
when the main charging device communicates with the slave power receiving device, the main controller and the slave controller are in communication connection through the first power supply contact and the second power supply contact, and interaction of charging parameters is carried out.
2. The master-slave charging device of claim 1, wherein the discharge circuit comprises:
the power output end and the controlled end of the power conversion circuit are respectively the power output end and the controlled end of the discharge circuit, and the power conversion circuit is triggered by the control signal of the main controller to output the charging power supply or switch off the output;
and the current detection circuit is respectively connected with the power output end of the power conversion circuit and the main controller, and triggers and outputs an interrupt signal to the main controller when the current of the charging power supply is smaller than a preset current, so that the main controller triggers the first charging interrupt function.
3. The master-slave charging device of claim 2, wherein the master charging device further comprises:
the power supply end of the second energy storage circuit is connected with the power supply input end of the discharge circuit;
the power supply output end of the second charging circuit is connected with the power supply end of the second energy storage circuit, and the second charging circuit is used for acquiring a direct current power supply output by external charging equipment and converting the direct current power supply output by the external charging equipment and outputting the direct current power supply to the second energy storage circuit for energy storage;
and the charging interface is connected with the power input end of the second charging circuit and is used for connecting the external charging equipment.
4. The master-slave charging device of claim 3, wherein the first tank circuit is a first battery and the second tank circuit is a second battery.
5. A master-slave charging device according to any of claims 1-4, characterized in that the discharge circuit is electrically connected to an interrupt signal terminal of the master controller via an interrupt signal line.
6. The master-slave charging device of any one of claims 1-4, wherein the slave controller is connected to an enable signal terminal of the first charging circuit through an enable signal line.
7. The master-slave charging device of claim 1, wherein the master charging device is a headset charging bay and the slave powered device is a TWS headset.
8. The master-slave charging device of claim 7, wherein the number of TWS headsets is 2.
CN202110910213.8A 2021-08-09 2021-08-09 Charging method of master-slave charging equipment and master-slave charging equipment Active CN113346600B (en)

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CN110602598B (en) * 2019-10-24 2021-12-17 歌尔科技有限公司 Wireless earphone, charging box and wireless earphone charging system
CN211018357U (en) * 2019-12-30 2020-07-14 Tcl通力电子（惠州）有限公司 Charging detection circuit, charging bin and charging system
CN113364072A (en) * 2020-03-06 2021-09-07 华为技术有限公司 Charging method, device and system

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