CN111917163B - Multi-port charging control circuit and method, charging chip and power supply equipment - Google Patents

Multi-port charging control circuit and method, charging chip and power supply equipment Download PDF

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Publication number
CN111917163B
CN111917163B CN202011064256.0A CN202011064256A CN111917163B CN 111917163 B CN111917163 B CN 111917163B CN 202011064256 A CN202011064256 A CN 202011064256A CN 111917163 B CN111917163 B CN 111917163B
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charging
load
target
path
preset
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CN111917163A (en
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陈伟
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Shenzhen Injoinic Technology Co Ltd
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Shenzhen Injoinic Technology Co Ltd
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Priority to CN202011064256.0A priority Critical patent/CN111917163B/en
Priority to CN202110223711.5A priority patent/CN114336815A/en
Priority to CN202110213580.2A priority patent/CN114336814A/en
Publication of CN111917163A publication Critical patent/CN111917163A/en
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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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • 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
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H02J7/0049—Detection of fully charged condition
    • 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
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The application provides a multi-port charging control circuit, which comprises a charging control module and a plurality of charging paths. When at least two conductive charging paths exist, the charging control module detects the output current of each conductive charging path and disconnects the target charging path when the state of a target charging load connected to the target charging path meets a preset condition; and when only one conductive charging path is available, adjusting the output voltage to the target charging voltage requested by the charging load connected to the conductive charging path. The preset condition includes that the target charging load is pulled out, or the target charging load is not pulled out but the output current of the target charging path is kept below the preset current threshold for a duration exceeding the preset time threshold. The application also provides a multi-port charging control method, a charging chip and power supply equipment. The charging system and the charging method can effectively monitor the plugging state and the full-charging state of the charging load of each charging path, and can dynamically and flexibly adjust the output voltage.

Description

Multi-port charging control circuit and method, charging chip and power supply equipment
Technical Field
The application relates to the technical field of charging, in particular to a multi-port charging control circuit and method, a charging chip and power supply equipment with the multi-port charging control circuit or the charging chip.
Background
In recent years, with the development of the quick charging technology, various quick charging technologies are more and more widely applied, and quick charging adapters, quick charging car chargers, quick charging mobile power supplies and other quick charging power supply devices are more and more. In addition, with the wide use of electronic products, the demand of users for charging a plurality of devices at the same time is gradually increased, and the multi-port quick charging technology gradually occupies the mainstream of charging application. However, since the output power of the fast charging is relatively high, if a plurality of output interfaces output fast charging currents at the same time, the total output power is too high, which not only increases the design cost, but also increases the design difficulty.
In order to control cost, some existing power supply devices generally adopt a single power converter, and support quick charging output under the condition that only one output interface is connected to a charging load; and when the condition that more than one output interface is connected to the charging load is recovered, the quick charging output is recovered. However, in such a fast charging output mode, if some charging loads are fully charged and still connected to the output interface, even if only one charging load is left to be fully charged, the power supply device cannot output a fast charging voltage to the charging load that is not fully charged, so that the charging time of the charging load is long, and the user experience is affected.
In order to shorten the charging time of the charging load, some existing power supply devices further determine whether the charging load is fully charged by monitoring whether the output current of the output interface is lower than a preset threshold, and actively turn off the corresponding charging output when determining that the charging load is fully charged. Therefore, under the condition that only one charging load is left to be not fully charged, the power supply equipment can actively output the quick charging voltage to the charging load which is not fully charged, and therefore the charging time of the charging load is shortened. However, the electronic device may have a high temperature due to some special use cases during the charging process, and for the purpose of safe charging, some electronic devices provided with a self-protection system actively suspend charging when not fully charged and resume charging after self-restoring to a normal temperature. If the manner of detecting the output current of the output interface is adopted to determine whether the electronic device is fully charged, a misjudgment may occur when the electronic device is suspended from charging, and the corresponding charging output is turned off in advance, so that the electronic device stops charging if not fully charged, and the user experience is affected.
Disclosure of Invention
The application provides a multi-port charging control circuit and method, a charging chip and power supply equipment, which can accurately and effectively detect the state of a charging load, and dynamically and flexibly control the on-off state of a charging channel according to a detection result so as to optimize charging efficiency and improve user experience.
A first aspect of the present application provides a multi-port charging control circuit including a plurality of interface modules, a voltage conversion module, and a charging control module. And each interface module is respectively used for accessing a charging load. The voltage conversion module is electrically connected with the plurality of interface modules respectively to form a plurality of charging paths. The charging control module is electrically connected with the plurality of charging paths and the voltage conversion module respectively. The charging control module is used for detecting the output current of each charging path in a conducting state when at least two charging paths are in a conducting state. The charging control module is further configured to determine whether an output current of each charging path in a conducting state meets a first preset condition, where the first preset condition is that the output current of the charging path is lower than a preset current threshold. The charging control module is further configured to, when it is determined that the output current of one or more charging paths in a conducting state meets the first preset condition, set the one or more charging paths meeting the first preset condition as a target charging path, and determine whether the state of a target charging load connected to the target charging path meets a second preset condition, where the second preset condition includes that the target charging load is pulled out, or that the target charging load is not pulled out but the duration of the output current of the target charging path being kept lower than the preset current threshold exceeds a first preset time threshold. The charging control module is further configured to disconnect the target charging path when it is determined that the state of the target charging load satisfies the second preset condition.
A second aspect of the present application provides a charging chip, which includes the multi-port charging control circuit of the first aspect.
A third aspect of the present application provides a fast charging and power supplying device, where the fast charging and power supplying device includes a power input interface, a plurality of USB interfaces, and the charging chip of the first aspect or the second aspect. The power input interface is used for receiving an input voltage provided by an external power supply. The plurality of USB interfaces are used for being electrically connected with a plurality of charging loads one by one. The multi-port charging control circuit or the charging chip is electrically connected between the power input interface and the plurality of USB interfaces and is used for receiving the input voltage and providing charging voltage for the plurality of charging loads. The input end of the voltage conversion module of the multi-port charging control circuit or the charging chip is electrically connected with the power input interface, and the plurality of interface modules of the multi-port charging control circuit or the charging chip are electrically connected with the plurality of USB interfaces one by one.
A fourth aspect of the present application provides a multi-port charging control method, which is applied to the multi-port charging control circuit of the first aspect or the charging chip of the second aspect. The multi-port charging control method comprises the following steps: when at least two charging paths are in a conducting state, detecting the output current of each charging path in the conducting state; judging whether the output current of each charging channel in a conducting state meets a first preset condition, wherein the first preset condition is that the output current of the charging channel is lower than a preset current threshold; when determining that the output current of one or more charging paths in a conducting state meets the first preset condition, setting the one or more charging paths meeting the first preset condition as a target charging path, and judging whether the state of a target charging load connected to the target charging path meets a second preset condition, wherein the second preset condition comprises that the target charging load is pulled out, or the target charging load is not pulled out but the duration of the output current of the target charging path kept lower than the preset current threshold exceeds a first preset time threshold; and disconnecting the target charging path when the state of the target charging load is determined to meet the second preset condition.
The multi-port charging control circuit of the embodiment continuously detects whether the target charging load is pulled out or not when detecting that the output current of the target charging path is lower than the preset current threshold, so that the situation that the target charging load is mistakenly judged to be pulled out due to charging suspension caused by the target charging load can be effectively avoided, the target charging load can be charged again after the target charging load is suspended for a period of time, and the use experience of charging for a user is improved.
In addition, the multi-port charging control circuit of this embodiment can automatically disconnect the target charging path when the duration of the output current of the target charging path being kept lower than the preset current threshold exceeds the first preset time threshold, so that when only one remaining charging load is not fully charged, the charging load not fully charged can be charged in the fast charging mode, thereby improving the charging speed of the charging load not fully charged and improving the use experience of charging for a user.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a functional block diagram of a multi-port charging control circuit according to an embodiment of the present disclosure.
Fig. 2 is a functional block diagram of the detection module shown in fig. 1.
Fig. 3 is a schematic circuit diagram of the plug detection submodule shown in fig. 2.
Fig. 4 is a schematic diagram of a functional module of a charging chip according to an embodiment of the present disclosure.
Fig. 5 is a schematic functional block diagram of a power supply device according to an embodiment of the present application.
Fig. 6 is a flowchart of a multi-port charging control method according to an embodiment of the present disclosure.
Fig. 7 is a flowchart of a method for detecting a state of a charging load according to an embodiment of the present disclosure.
Description of the main elements
Multi-port charging control circuit 100、41、52
Voltage conversion module 11
Charging path 12
Interface module 121
Switch module 122
Charging control module 13
Detection module 14
Plug detection submodule 141
Quick charging protocol detection submodule 142
Current detection submodule 143
Charging load 200
Charging chip 400
Power supply equipment 500
Power input interface 51
USB interface 53
Switch tube Q1、Q2
Resistance (RC) R1
Comparator with a comparator circuit C1
Step (ii) of 601-610、701-714
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The drawings are for illustration purposes only and are merely schematic representations, not intended to limit the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Fig. 1 is a functional block diagram of a multi-port charging control circuit according to an embodiment of the present disclosure. As shown in fig. 1, the multi-port charging control circuit 100 includes a voltage conversion module 11, a plurality of interface modules 121, and a charging control module 13. Each of the interface modules 121 is used to access the charging load 200. The interface module 121 may adopt a Type interface such as Type-a or Type-C. It is understood that a plurality of the interface modules 121 may be configured as the same type of interface, and may also be configured as different types of interfaces. The charging loads 200 shown in fig. 1 correspond to different electronic devices, and the types of the electronic devices may be the same or different, for example, the electronic devices may be mobile phones, tablet computers, and the like. For convenience of description, in fig. 1 of the present embodiment, a plurality of the interface modules 121 are denoted by the same reference numerals, and a plurality of the charging loads 200 are also denoted by the same reference numerals.
The voltage conversion module 11 is configured to receive an input voltage provided by an external power source (not shown), convert the input voltage into a suitable output voltage, and output the suitable output voltage. For example, the input voltage provided by the external power source may be 220V ac mains, and accordingly, the voltage conversion module 11 may be configured to convert the ac input voltage provided by the external power source into a dc output voltage.
The output end of the voltage conversion module 11 is electrically connected to the plurality of interface modules 121, respectively, to form a plurality of charging paths 12. The plurality of charging paths 12 are configured to output charging voltages to the plurality of charging loads 200 connected thereto through the corresponding interface modules 121. For convenience of description, the embodiment of the present application mainly takes two charging paths 12 as an example, and details the structure of the multi-port charging control circuit 100 of the present application are described.
In the present embodiment, the charging control module 13 is electrically connected to the plurality of charging paths 12, and the charging control module 13 is configured to control on/off states of the plurality of charging paths 12. Specifically, as shown in fig. 1, the multi-port charging control circuit 100 further includes a plurality of switch modules 122, the plurality of switch modules 122 correspond to the plurality of charging paths 12 one to one, and each switch module 122 is disposed on a corresponding charging path 12. That is, the plurality of switch modules 122 are electrically connected between the voltage conversion module 11 and the plurality of interface modules 121 one by one. Each switch module 122 is used to control the on-off state of the corresponding charging path 12. The switch module 122 may adopt an electronic switch device such as a MOS transistor, a triode, a relay, etc., and the type of the switch module 122 is not limited in this embodiment.
The charging control module 13 is electrically connected to the plurality of switch modules 122, and the charging control module 13 controls the on/off states of the plurality of charging paths 12 by controlling the on/off states of the plurality of switch modules 122. In the present embodiment, when the charging load 200 is not connected to the interface module 121, the switch module 122 is in an off state.
In this embodiment, the charging control module 13 is further configured to detect an electrical parameter of each charging path 12 and a state of the charging load 200 connected to each interface module 121. Specifically, as shown in fig. 1, the multi-port charging control circuit 100 further includes a plurality of detection modules 14, and the plurality of detection modules 14 correspond to the plurality of interface modules 121 and the plurality of charging paths 12 one to one. The charging control module 13 is configured to detect the electrical parameters of the plurality of charging paths 12 and the states of the charging loads 200 corresponding to the plurality of interface modules 121 through the plurality of detection modules 14.
In this embodiment, as shown in fig. 2, each of the detecting modules 14 includes a plugging detecting sub-module 141, a fast charging protocol detecting sub-module 142, and a current detecting sub-module 143. The plugging detection submodule 141 is electrically connected to the corresponding interface module 121, and the plugging detection submodule 141 is configured to detect a plugging state of the charging load 200 corresponding to the corresponding interface module 121, and feed back a detection result to the charging control module 13.
The circuit structure and the operation principle of the plug detection sub-module 141 will be briefly described with reference to fig. 3. Fig. 3 is a schematic circuit diagram of the plugging detection submodule 141. It is understood that the structure of the plug detection submodule 141 is not limited to the structure shown in fig. 3.
As shown in fig. 3, the plug detection submodule 141 includes a comparator C1, a resistor R1, and switching transistors Q1 and Q2. The positive input terminal + of the comparator C1 is electrically connected to the DP pin or the DM pin of the corresponding interface module (the DP pin is taken as an example in fig. 3), and the positive input terminal + of the comparator C1 is further electrically connected to an output terminal (not shown) of a voltage source through the resistor R1 and the switching tubes Q1 and Q2, so as to receive an input voltage of 2.7V. The negative input terminal of the comparator C1 is electrically connected to the output terminal of a reference voltage generating circuit (not shown) to receive a reference voltage of 2V. The on-off state of the switching tubes Q1 and Q2 may be controlled by a control signal det _ en applied to control terminals of the switching tubes Q1 and Q2. The control signal det _ en may be generated by the charging control module 13, for example.
When no charging load is inserted into the interface module, the DP pin or DM pin is floating, and its voltage is pulled up to 2.7V through resistor R1. At this time, the positive input terminal + of the comparator C1 receives a voltage of 2.7V, which is higher than the reference voltage of 2V received at the negative input terminal. According to the working principle of the comparator, the comparator C1 outputs a high level signal "1". That is, when the charging load is not inserted into the interface module, the detection signal det _ flag output from the comparator C1 is a high level signal "1".
When a charging load (not shown) is inserted into the interface module, the impedance to ground (not shown) of the charging load and the resistor R1 form a voltage dividing circuit, and the voltage of the DP pin or the DM pin is pulled down to 2V or less by the impedance to ground of the charging load according to the principle of voltage division. At this time, the positive input terminal of the comparator C1 receives a voltage lower than 2V, and the comparator C1 outputs a low level signal "0". That is, when a charging load is inserted into the interface module, the detection signal det _ flag output from the comparator C1 is a low level signal "0".
In this way, the charging control module 13 can detect the plugging/unplugging state of the charging load corresponding to the corresponding interface module 121 by the detection signal det _ flag fed back by the plugging/unplugging detection submodule 141.
It can be understood that, when the plugging detection sub-module 141 detects that the charging load 200 is inserted into the corresponding interface module 121, and feeds back the detection signal det _ flag to the charging control module 13, the charging control module 13 can conduct the corresponding charging path 12 according to the detection signal det _ flag fed back by the plugging detection sub-module 141, so as to output a charging voltage to the connected charging load 200.
The quick charge protocol detection submodule 142 is electrically connected to the corresponding interface module 121, and the quick charge protocol detection submodule 142 is configured to detect a quick charge protocol signal of a charging load accessed by the corresponding interface module 121, and feed back a detection result to the charge control module 13. It is understood that the circuit structure of the rapid charging protocol detection submodule 142 may also be changed correspondingly for different types of interface modules.
When the fast charge protocol detection submodule 142 detects a fast charge protocol signal, the charge control module 13 may determine that the corresponding charging load 200 supports the fast charge protocol, and may identify the fast charge voltage required or requested by the corresponding charging load 200 according to the fast charge protocol signal fed back by the fast charge protocol detection submodule 142. In contrast, when the fast charge protocol detection sub-module 142 does not detect the fast charge protocol signal, the charge control module 13 may determine that the corresponding charging load 200 does not support the fast charge protocol, and may determine that the corresponding charging load 200 requests the normal charging voltage.
The current detection submodule 143 is electrically connected to the corresponding charging path 12, and the current detection submodule 143 is configured to detect an output current of the corresponding charging path 12 and feed back a detection result to the charging control module 13. In this way, after the charging control module 13 turns on the charging path 12, the output current of the charging path 12 in the on state can be detected in real time or at a preset frequency by the corresponding current detection submodule 143.
When the charging control module 13 is used, the charging control module is configured to detect whether a charging load is connected to the interface module 121 corresponding to the charging path 12 in the disconnected state in real time or at a preset frequency, and when it is detected that the charging load is connected to the charging path 12 in the disconnected state, turn on the charging path in the disconnected state and to which the charging load is connected. In this embodiment, as described above, the charging control module 13 may detect whether the charging load is connected to the interface module 121 corresponding to the charging path 12 in the disconnected state through the plug and unplug detection submodule 141 corresponding to the charging path 12 in the disconnected state.
In this embodiment, the charging control module 13 is further configured to monitor the number of charging paths 12 in the conducting state in real time or at a preset frequency during the use process.
As shown in fig. 1, the charging control module 13 is further electrically connected to the voltage conversion module 11, and the charging control module 13 is further configured to control the voltage conversion module 11 to output a preset normal charging voltage when at least two of the charging paths 12 are in a conducting state. Wherein the normal charging voltage may be set to 5V.
Because the output power of fast charging is bigger, for the power supply equipment that fills soon of many mouthfuls, if a plurality of output interface output fast charging current simultaneously, total output power is too big, not only can increase the design cost, still can increase the design degree of difficulty. The multi-port charging control circuit 100 of this embodiment outputs a preset normal charging voltage to charge each connected charging load when at least two of the charging paths 12 are in a conducting state, so that the problem of excessive total output power caused by the fact that the plurality of interface modules 121 output fast charging currents at the same time can be effectively avoided through a simple circuit structure, and design and manufacturing costs are not increased.
Further, the charging control module 13 is further configured to detect the output current of each charging path 12 in the conducting state in real time or at a preset frequency when at least two charging paths 12 are in the conducting state. In this embodiment, as described above, the charging control module 13 may detect the output current of the conductive charging path 12 through the current detection sub-module 143.
Further, the charging control module 13 is further configured to determine whether the output current of each charging path 12 in the conducting state satisfies a first preset condition. The first preset condition is that the output current of the charging path is changed from being higher than a preset current threshold value to being lower than the preset current threshold value. The preset current threshold may be set to 10mA or 100mA, for example, and a specific value of the preset current threshold is not limited in this embodiment.
The charging control module 13 is further configured to set, when it is determined that the output current of the one or more charging paths 12 in the on state satisfies the first preset condition, the one or more charging paths 12 satisfying the first preset condition as a target charging path, determine whether a state of a target charging load connected to the target charging path satisfies a second preset condition, and disconnect the target charging path when it is determined that the state of the target charging load satisfies the second preset condition.
In this embodiment, the second preset condition may include that the target charging load is pulled out. In this embodiment, as described above, the charging control module 13 may detect whether the charging load connected to the charging path 12 in the conducting state is pulled out or removed through the plug detection submodule 141 corresponding to the charging path 12 in the conducting state.
It can be understood that, the multi-port charging control circuit 100 of this embodiment disconnects the target charging path when detecting that the target charging load is pulled out, so that when only one conducting charging circuit remains, the charging load connected to the conducting charging path can be charged using the fast charging mode, so as to accelerate the charging speed of the charging load.
In this embodiment, the second preset condition may further include that the target charging load is not pulled out but the output current of the target charging path is kept below the preset current threshold for a duration exceeding a first preset time threshold t 1. The first preset time threshold may be set to 10 minutes, 20 minutes, 30 minutes, or the like, for example, and a specific value of the first preset time threshold is not limited in this embodiment.
It is understood that the multi-port charging control circuit 100 may further include a timer module (not shown) for recording the duration. It is understood that the timer module may also be disposed in the charging control module 13, and the disposition of the timer module is not limited in the embodiment of the present application.
Since some electronic devices may have their own temperature higher due to some special use cases during charging, for example, the electronic devices are charged in a place where the ambient temperature is higher, or a user plays a game while using the electronic devices, when the electronic devices detect that their own temperature is too high, the electronic devices may actively suspend charging without being fully charged for the sake of safe charging, and resume charging after they return to normal temperature. If the electronic equipment is judged to be fully charged only by detecting the output current of the charging path, the corresponding charging path is probably disconnected in advance due to misjudgment when the electronic equipment is suspended to be charged, so that the charging of the electronic equipment is stopped when the electronic equipment is not fully charged, and the use experience of a user is influenced.
The multi-port charging control circuit 100 of this embodiment continues to detect whether the target charging load is pulled out when detecting that the output current of the target charging path is lower than the preset current threshold, so as to effectively avoid the target charging load being erroneously determined to be pulled out due to charging suspension caused by its own reason, and thus, the target charging load can resume charging after charging suspension for a period of time, so as to improve the use experience of charging for a user.
In addition, the duration that the output current of the target charging path is kept below the preset current threshold exceeds a first preset time threshold, which indicates that the target charging load may be fully charged. If the target charging path continues to be in the on state for a long time, even if only one charging load is left to be fully charged, the fully charged charging load cannot be charged using the quick charging mode.
By adopting the multi-port charging control circuit 100 of the embodiment, the target charging path can be automatically disconnected when the duration of the output current of the target charging path being kept lower than the preset current threshold exceeds the first preset time threshold, so that when only one remaining charging load is not fully charged, the charging load not fully charged can be charged in the fast charging mode, the charging speed of the charging load not fully charged is increased, and the use experience of charging for a user is improved.
In summary, the multi-port charging control circuit 100 provided in this embodiment can accurately and effectively detect the plugging/unplugging state and the full-charging state of the charging load corresponding to each charging path, and can dynamically and flexibly adjust the output voltage of the voltage conversion module according to the detection result, thereby optimizing the charging efficiency and improving the charging experience of the user.
In another embodiment, the first preset condition may be that the output current of the target charging path changes from being higher than a preset current threshold to being lower than the preset current threshold, and the duration that the output current of the target charging path is kept lower than the preset current threshold exceeds a second preset time threshold t 0. Therefore, for a transient charging abnormal condition, for example, a condition that a user touches the target charging load to influence circuit connection, frequent triggering of detection of a fully charged state and a pulled-out state of the target charging load can be avoided, and early disconnection of the target charging path can also be avoided.
Wherein the second preset time threshold t0 is smaller than the first preset time threshold t 1. The second preset time threshold t0 may be set to 8 seconds, 16 seconds, 32 seconds, etc., for example, and the specific value of the second preset time threshold is not limited in this embodiment.
The operation of the charging control module 13 determining whether the state of the target charging load connected to the target charging path satisfies the second preset condition will be described in detail below.
In this embodiment, the charging control module 13 first determines whether the target charging load is in a fast charging request state. It can be understood that the charging control module 13 may detect the fast charging protocol signal of the target charging load through the fast charging protocol detection sub-module 142 corresponding to the target charging path, so as to determine whether the target charging load is in the fast charging request state. If the quick charging protocol signal of the target charging load is detected, determining that the target charging load is in a quick charging request state; otherwise, if the rapid charging protocol signal of the target charging load is not detected, it may be determined that the target charging load is not in the rapid charging request state.
In this embodiment, the charging control module 13 may determine that the target charging load is not pulled out when the target charging load is in the quick charging request state. It is to be understood that the target charging load is in the rapid charging request state, which indicates that the target charging load has not been pulled out or removed, and the target charging load may be fully charged or may suspend charging due to an abnormal situation. It should be noted that, in this embodiment, when at least two of the charging paths are in the on state, the voltage conversion module 11 outputs a normal charging voltage, and therefore, all charging loads connected thereto are charged with the normal charging voltage. Therefore, the target charging load in the fast charging request state only indicates that the target charging load supports fast charging or has a fast charging requirement, but the target charging load is not necessarily in the fast charging mode, and the target charging load can also be in a common charging mode, i.e., a non-fast charging mode.
Further, when the target charging load is not in the quick charging request state, the charging control module 13 continues to detect whether the target charging load has been pulled out.
It is to be understood that the charging load may or may not support fast charging. For the charging load that does not support fast charging, the target charging load is not in the fast charging request state and does not represent that the target charging load is pulled out, and therefore, further plug-in detection is required to accurately judge whether the target charging load is actually pulled out.
As described above, the charging control module 13 may detect whether the target charging load is pulled out or removed through the plug detection submodule 141 corresponding to the target charging path 12.
Referring to fig. 3, when the charging load is just inserted into the interface module, since the corresponding charging path has not yet output the fast charging voltage to the charging load, the voltage of the DP pin or the DM pin of the corresponding interface module will be lower than 2V, and the comparator C1 will output the low level signal "0". Therefore, the insertion of the charging load can be accurately detected by the insertion/extraction detection sub-module 141.
However, if only one charging load remains and the charging load is in the fast charging mode during the charging process, even if the charging load is fully charged or charging is suspended, the voltage of the DP pin or the DM pin of the corresponding interface module may be higher than 2V, and thus the comparator C1 may output a high level signal "1". At this time, the charging control module 13 cannot accurately determine whether the charging load is pulled out only by the detection signal det _ flag fed back by the plug detection submodule 141, and may erroneously determine that the charging load is pulled out.
Before the plugging detection of the target load, the multi-port charging control circuit 100 of this embodiment detects the rapid charging protocol signal of the target load to determine whether the target charging load is in a rapid charging request state, and can eliminate the situation that the charging load is in a rapid charging mode of full charge or charging suspension but is erroneously determined to be plugged out, so that the plugging state of the charging load can be effectively and accurately detected, the erroneous detection of whether the charging load is plugged out is avoided, and the target charging path is prevented from being disconnected in advance due to the erroneous determination.
Further, when it is determined that the target charging load is not pulled out, the charging control module 13 continues to determine whether the duration in which the output current of the target charging path is kept below the preset current threshold exceeds the first preset time threshold.
It can be understood that, by determining whether the duration time exceeds the first preset time threshold, the situation that the target charging path is turned off in advance due to charging suspension of the target charging load can be effectively avoided, and the target charging path is also prevented from being in a conducting state for a long time when the target charging load is fully charged. Thus, after the charging load suspends charging for a period of time, the charging load which is not fully charged can resume charging again.
Further, when the duration exceeds the first preset time threshold or when it is determined that the target charging load has been pulled out, the charging control module 13 determines that the state of the target charging load satisfies the second preset condition, and disconnects the target charging path to stop the voltage output to the target charging path.
In this way, when the state of the charging load connected to one or more of the conducting charging paths meets the second preset condition, the charging control module 13 may automatically disconnect the one or more conducting charging paths, so that the remaining conducting charging paths have a chance to obtain a fast charging voltage, thereby shortening the charging time.
It is understood that, in the present embodiment, the target charging path may be disconnected after waiting for the first preset time threshold only in the case where the target charging load is not pulled out, and the target charging path may be disconnected immediately upon determining that the target charging load has been pulled out without waiting for the first preset time threshold.
In this embodiment, the charging control module 13 is further configured to, when only one charging path is in a conducting state, obtain a target charging voltage requested by a charging load connected to the charging path in the conducting state, and control the voltage conversion module 11 to adjust the output voltage to the target charging voltage, so that the charging load connected to the charging path in the conducting state can be charged with the target charging voltage.
The charging control module 13 may detect a fast charging protocol signal of a charging load connected to the charging path in the conducting state through the corresponding fast charging protocol detection submodule 142, and determine a corresponding target charging voltage according to the fast charging protocol signal.
It is understood that, when only one of the charging paths is in the conducting state, the charging load connected to the conducting charging path requests a fast charging voltage. If the charging load requests the normal charging voltage, it indicates that the charging load does not support the fast charging protocol, and the voltage conversion module 11 may continue to output the normal charging voltage to charge the corresponding charging load. If the charging load requests the fast charging voltage, it indicates that the charging load supports the fast charging protocol, and the charging control module 13 may control the voltage conversion module 11 to output the corresponding fast charging voltage to charge the corresponding charging load, so as to shorten the charging time of the corresponding charging load.
It can be understood that, when only one of the charging paths is in the conducting state and the voltage conversion module 11 outputs the fast charging voltage, if a charging load is connected to another charging path, the charging control module 13 may control the voltage conversion module 11 to adjust the output voltage to the normal charging voltage.
In summary, the multi-port charging control circuit 100 provided in this embodiment can automatically and flexibly adjust the output voltage by detecting the state of the connected charging load, so that the fast charging function is suspended when at least two charging paths 12 are in the conducting state, so as to effectively avoid the problem that the total output power is too large because a plurality of interface modules simultaneously output fast charging currents; the quick charging function is recovered when only one charging path 12 is in a conducting state, so that the charging speed of a charging load can be increased in a most efficient charging mode, the effect of optimizing the charging efficiency is achieved, and the use experience of a user can be better considered.
Further, the multi-port charging control circuit 100 provided in this embodiment can effectively identify and distinguish two states, i.e., a fully charged state and a pulled-out/removed state, of the charging load for a charging path with a charging current smaller than the preset current threshold, and adopt different disconnection strategies for corresponding charging paths for the two different states, i.e., the fully charged state and the pulled-out/removed state, so as to improve the charging experience of a user.
In this embodiment, the different turn-off strategies refer to taking different times to maintain the conducting state of the corresponding target charging path for different states of the target charging load. For example, when the target charging load has been removed, the corresponding target charging path may be disconnected after several seconds, ten seconds, or several tens of seconds, so as to reduce the waiting time for other charging loads to use the fast charging mode for charging; when the target charging load still exists on the corresponding interface module, the corresponding target charging path can be disconnected after several minutes, tens of minutes or tens of minutes, so that the false detection of whether the charging load is pulled out can be effectively avoided.
Further, the multi-port charging control circuit 100 provided in this embodiment can not only quickly identify whether the charging load is removed or not for the charging path with the charging current smaller than the preset current threshold, but also quickly disconnect the corresponding charging channel for the case that the charging load is actually removed, and continue to charge the charging load for a prolonged period of time for the case that the charging load is not removed. This way of extending the charging time is particularly effective for the detection scheme with low current detection accuracy, because if the detection accuracy is not high, the preset current threshold needs to be set to be larger, for example, 100mA, at this time, the charging load is in a fast full-charging state, but may not be fully charged yet, and the charging load can actually reach the full-charging state by extending the charging time. In the case where the charging load temporarily stops charging due to the temperature abnormality or the like as described above, the charging time is extended so that the charging load can resume charging within this time.
The application also provides a charging chip. As shown in fig. 4, the charging chip 400 includes a multi-port charging control circuit 41. The multi-port charging control circuit 41 may correspond to the multi-port charging control circuit 100 shown in fig. 1, and for details of the multi-port charging control circuit 41, please refer to the related detailed description of the multi-port charging control circuit 100 shown in fig. 1, and for brevity and avoidance of repetition, repeated details are not repeated herein. It is understood that the plurality of interface modules of the multi-port charging control circuit 41 may correspond to I/O interfaces on the charging chip.
The application also provides a quick-charging power supply device. As shown in fig. 5, the power supply apparatus 500 includes a power input interface 51, a multi-port charging control circuit 52, and a plurality of USB interfaces 53. The power input interface 51 is electrically connected to the multi-port charging control circuit 52, and the power input interface 51 is configured to receive an input voltage provided by an external power source, for example, 220V ac mains, so as to provide the input voltage for the multi-port charging control circuit 52.
The USB interfaces 53 are used for electrically connecting to a plurality of charging loads, such as a mobile phone and a tablet computer. In this embodiment, the USB interface 53 includes a USB TYPE-a interface and a USB TYPE-C interface. The USB interface 53 is used to be electrically connected to a charging load through a USB charging wire.
The multi-port charging control circuit 52 is used for charging the connected charging load. In the present embodiment, the multi-port charging control circuit 52 may correspond to the multi-port charging control circuit 100 shown in fig. 1, and for details of the multi-port charging control circuit 52, please refer to the related detailed description of the multi-port charging control circuit 100 shown in fig. 1, and for brevity and avoidance of repetition, repeated details are not repeated herein. It is understood that the multi-port charging control circuit 52 may be provided in a charging chip.
The multi-port charging control circuit 52 is electrically connected between the power input interface 51 and the plurality of USB interfaces 53, and is configured to receive the input voltage and provide a charging voltage for the plurality of charging loads. Specifically, the input end of the voltage conversion module of the multi-port charging control circuit 52 is electrically connected to the power input interface 51, and the plurality of interface modules of the multi-port charging control circuit 52 are electrically connected to the plurality of USB interfaces 53 one by one.
The power supply device 500 may be a fast charging portable power source, a fast charging adapter, or the like.
Fig. 6 is a flowchart of a multi-port charging control method according to an embodiment of the present disclosure. The multi-port charging control method can be applied to the multi-port charging control circuit 100 shown in fig. 1 or the charging chip shown in fig. 4. It should be noted that the multi-port charging control method of the present embodiment is not limited to the steps and the sequence in the flowchart shown in fig. 6. Steps in the illustrated flowcharts may be added, removed, or changed in order according to various needs.
In this embodiment, as shown in fig. 6, the multi-port charging control method includes the following steps.
Step 601, detecting whether the interface module corresponding to the charging path in the disconnected state has a charging load connected. When detecting that a charging load is connected to the charging path in the disconnected state, executing step 603; when it is not detected that the charging load is inserted into the charging path in the disconnected state, step 602 is executed.
Step 602, determine whether there is a charging path in a conducting state. When there is a charging path in the conducting state, execute step 604; and returning to the step 601 when no charging path is in the on state, and continuously detecting whether the interface module corresponding to the charging path in the off state has the charging load connected.
Step 603, turning on the charging path in the off state and with the charging load connected.
Step 604, the number of charging paths in the conducting state is monitored, and whether only one charging path is in the conducting state is determined. When at least two of the charging paths are in the on state, step 605 is executed; when only one charging path is in the conducting state, step 610 is performed.
Step 605, the voltage conversion module is controlled to output a preset common charging voltage.
Step 606, detecting the output current of each charging path in the conducting state.
In step 607, it is determined whether the output current of each charging path in the on state satisfies a first predetermined condition. The first preset condition is that the output current of the charging path is lower than a preset current threshold.
Alternatively, in another embodiment, the first preset condition may be that the output current of the charging path is lower than a preset current threshold, and the duration of the output current of the charging path being lower than the preset current threshold exceeds a second preset time threshold.
If the output current of the one or more charging paths in the conducting state meets a first preset condition, setting the one or more charging paths meeting the first preset condition as a target charging path, and executing step 608; if the output current of each charging path in the conducting state does not meet the first preset condition, the step 606 is returned to, and the output current of each charging path in the conducting state is continuously detected.
Step 608, determining whether the state of the target charging load accessed by the target charging path satisfies a second preset condition.
Wherein the second preset condition comprises that the target charging load is pulled out, or the target charging load is not pulled out but the output current of the target charging path is kept below the preset current threshold for a duration exceeding a first preset time threshold. Wherein the first preset time threshold is greater than the first preset time threshold.
If the state of the target charging load meets the second preset condition, executing step 609; if the state of the target charging load does not satisfy the second preset condition, the step 606 is returned to, and the output current of each charging path in the conducting state is continuously detected.
Step 610, obtaining a target charging voltage requested by a charging load accessed by the charging path in the conducting state, and controlling the voltage conversion module to adjust the output voltage to the target charging voltage. After the step 610 is performed, the step 606 is continuously performed.
The specific technical details of step 601-610 in the present embodiment can refer to the description of the related technical details of the embodiment shown in fig. 1, and are not repeated herein.
According to the multi-port charging control method, when the output current of the target charging path is lower than the preset current threshold value, whether the target charging load is pulled out or not is continuously detected, so that the situation that the target charging load is mistakenly judged to be pulled out due to charging suspension caused by self reasons can be effectively avoided, the target charging load can be charged again after charging suspension for a period of time, and the use experience of charging of a user is improved.
In addition, the multi-port charging control method of the embodiment can automatically disconnect the target charging path when the duration of the output current of the target charging path kept lower than the preset current threshold exceeds the first preset time threshold, so that when only one remaining charging load is not fully charged, the charging load not fully charged can be charged in a fast charging mode, and the charging speed of the charging load not fully charged is increased and the use experience of charging for a user is improved.
In addition, the multi-port charging control method provided by this embodiment can automatically and flexibly adjust the output voltage by detecting the state of the accessed charging load, so as to suspend the fast charging function when at least two charging paths are in a conducting state, so as to effectively avoid the problem that the total output power is too large because a plurality of interface modules simultaneously output fast charging currents; the quick charging function is recovered when only one charging channel is in a conducting state, so that the charging speed of a charging load can be increased in a most efficient charging mode, the effect of optimizing the charging efficiency is achieved, and the use experience of a user can be better considered.
Fig. 7 is a flowchart of a method for detecting a state of a charging load according to an embodiment of the present disclosure. The method for detecting the state of the charging load can be applied to the multi-port charging control circuit 100 shown in fig. 1 or the charging chip shown in fig. 4.
In the present embodiment, as shown in fig. 7, the method for detecting the state of the charging load includes the following steps.
In step 701, the output current of each charging path in the conducting state is detected.
Step 702, determine whether the output current of each charging path in the conducting state is lower than a preset current threshold. If the output current of the one or more charging paths in the conducting state is lower than the preset current threshold, setting the one or more charging paths of which the output current is lower than the preset current threshold as a target charging path, and executing step 703; if the output current of each charging path in the conducting state is not lower than the preset current threshold, the step 701 is returned to, and the output current of each charging path in the conducting state is continuously detected.
In step 703, a timer is started to start timing, that is, timing the duration t during which the output current of the target charging path is kept lower than the preset current threshold.
Step 704, determining whether the duration time t exceeds a second preset time threshold t 0. If the duration t exceeds the second preset time threshold t0, go to step 708; if the duration t does not exceed the second preset time threshold t0, step 705 is executed.
Step 705, continuously detecting the output current of the target charging path.
Step 706, determining whether the output current of the target charging path is lower than a preset current threshold. If the output current of the target charging path is lower than the preset current threshold, returning to the step 704, and continuing to determine whether the duration time t exceeds a second preset time threshold t 0; if the output current of the target charging path is not lower than the preset current threshold, it indicates that the target charging load resumes charging, and at this time, step 707 is executed.
And step 707, timing and clearing, returning to the step 701, and continuously detecting the output current of each charging path in the conducting state.
Step 708, determine whether the target charging load is in a fast charging request state. If the target charging load is in the fast charging request state, determining that the target charging load is still in the connection state and is not pulled out, and then executing step 712; if the target charging load is not in the fast charging request state, step 709 is executed.
And step 709, performing plug-in detection on the target charging load.
Step 710, determining whether the target charging load has been pulled out. If the target charging load is not pulled out, the step 712 is executed; if the target charging load has been pulled out, step 711 is executed.
Step 711, disconnect the target charging path.
In step 712, it is determined whether the duration time t exceeds a first preset time threshold t 1. If the duration t exceeds the first preset time threshold t1, the process goes to step 711; if the duration t does not exceed the first preset time threshold t1, step 713 is executed.
Step 713, continue to detect the output current of the target charging path.
Step 714, determining whether the output current of the target charging path is lower than a preset current threshold. If the output current of the target charging path is lower than the preset current threshold, returning to the step 708, and continuing to determine whether the target charging load is in a fast charging request state; if the output current of the target charging path is not lower than the preset current threshold, it indicates that the target charging load resumes charging, and at this time, the process goes to step 707.
In this embodiment, the steps 701-714 are specific steps of the steps 606-609 of the embodiment shown in fig. 6, and specific technical details can refer to the description of the related technical details of the embodiment shown in fig. 1, which is not repeated herein.
It should be noted that the method for detecting the state of the charging load according to the present embodiment is not limited to the steps and the sequence in the flowchart shown in fig. 7. Steps in the illustrated flowcharts may be added, removed, or changed in order according to various needs. For example, the steps 704-706 may be removed according to different requirements.
According to the state detection method of the charging load, before the target load is subjected to plug detection, the quick charging protocol signal of the target load is detected to judge whether the target charging load is in a quick charging request state, and the situation that the charging load is in a quick charging mode of full charging or charging suspension but is mistakenly judged to be pulled out can be eliminated, so that the plug state of the charging load can be effectively and accurately detected, the mistaken detection of whether the charging load is pulled out is avoided, and the target charging path is prevented from being disconnected in advance due to the mistaken judgment.
Further, the method for detecting the state of the charging load provided by this embodiment can effectively identify and distinguish two states, namely, a fully charged state and a pulled-out/removed state, of the charging load for a charging path in which the charging current is smaller than the preset current threshold, and adopt different disconnection strategies for corresponding charging paths for the two different states, namely, the fully charged state and the pulled-out/removed state, so that the use experience of charging for a user can be improved.
Further, the method for detecting the state of the charging load provided by this embodiment can quickly identify whether the charging load is removed or not for the charging path with the charging current smaller than the preset current threshold, quickly disconnect the corresponding charging channel for the case that the charging load is actually removed, and continue to charge the charging load for a further extended period of time for the case that the charging load is not removed. This way of extending the charging time is particularly effective for the detection scheme with low current detection accuracy, because if the detection accuracy is not high, the preset current threshold needs to be set to be larger, for example, 100mA, at this time, the charging load is in a fast full-charging state, but may not be fully charged yet, and the charging load can actually reach the full-charging state by extending the charging time. In the case where the charging load temporarily stops charging due to the temperature abnormality or the like as described above, the charging time is extended so that the charging load can resume charging within this time.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims (15)

1. A multi-port charge control circuit comprising:
the interface modules are respectively used for accessing a charging load;
the voltage conversion module is electrically connected with the plurality of interface modules respectively to form a plurality of charging paths;
the detection modules are respectively connected with the interface modules and the charging paths in a one-to-one correspondence manner; and
a charging control module electrically connected to the plurality of detection modules and the voltage conversion module, respectively, the charging control module being electrically connected to the plurality of charging paths through the plurality of detection modules, respectively, the charging control module being configured to detect electrical parameters of the plurality of charging paths and states of charging loads corresponding to the plurality of interface modules through the plurality of detection modules; wherein the charging control module is to:
detecting the output current of the charging path in the conducting state when at least one charging path is in the conducting state;
judging whether the output current of the charging path in the conducting state meets a first preset condition or not, wherein the first preset condition is that the output current of the charging path is lower than a preset current threshold;
when determining that the output current of one or more charging paths in a conducting state meets the first preset condition, setting the one or more charging paths meeting the first preset condition as a target charging path, and judging whether the state of a target charging load connected to the target charging path meets a second preset condition, wherein the second preset condition comprises that the target charging load is pulled out, or the target charging load is not pulled out but the duration of the output current of the target charging path kept lower than the preset current threshold exceeds a first preset time threshold; and
disconnecting the target charging path when the state of the target charging load is determined to meet the second preset condition;
wherein each of the detection modules comprises:
the quick charge protocol detection submodule is electrically connected with the corresponding interface module and is used for detecting a quick charge protocol signal of a charge load accessed by the corresponding interface module and feeding back a detection result to the charge control module; and
the plug detection submodule is electrically connected with the corresponding interface module and used for detecting the plug state of the charging load corresponding to the corresponding interface module and feeding back a detection result to the charging control module, wherein the plug detection submodule comprises a comparator, a first switch tube and a second switch tube, the positive input end of the comparator is electrically connected with a preset pin of the corresponding interface module, and the positive input end of the comparator is also electrically connected with the output end of a voltage source through a resistor, the first switch tube and the second switch tube in sequence so as to receive a preset input voltage; the negative input end of the comparator is electrically connected with the output end of a reference voltage generating circuit so as to receive a preset reference voltage; the output end of the comparator is electrically connected with the charging control module so as to output a detection signal to the charging control module; the charging control module is further configured to generate a control signal to simultaneously control the first switching tube and the second switching tube to be turned on and simultaneously control the first switching tube and the second switching tube to be turned off; when no charging load is inserted into the interface module corresponding to the comparator, the preset pin is suspended, and the positive input end of the comparator is electrically connected to the output end of the voltage source to receive the preset input voltage, so that the output end of the comparator outputs a high-level signal; when a charging load is just inserted into the interface module corresponding to the comparator, the voltage of the preset pin is pulled down to be lower than the preset reference voltage by the impedance to ground of the charging load, so that the output end of the comparator outputs a low-level signal; when a charging load connected with an interface module corresponding to the comparator is in a fast charging mode, the preset pin receives a fast charging voltage to enable the voltage of the positive input end of the comparator to be higher than the preset reference voltage, and the output end of the comparator outputs a high level signal;
the charging control module is configured to, when determining whether the state of the target charging load accessed by the target charging path satisfies the second preset condition:
detecting whether the target charging load is in a quick charging request state or not through a quick charging protocol sub-module corresponding to the target charging load;
when the target charging load is in a quick charging request state, determining that the target charging load is not pulled out;
when the target charging load is not in a quick charging request state, detecting whether the target charging load is pulled out or not through a plug-pull detection submodule corresponding to the target charging load;
when the target charging load is determined not to be pulled out, judging whether the duration of the output current of the target charging path, which is kept lower than the preset current threshold, exceeds the first preset time threshold or not;
and when the duration time exceeds the first preset time threshold value or when the target charging load is determined to be pulled out, determining that the state of the target charging load meets the second preset condition.
2. The multi-port charging control circuit of claim 1, wherein the charging control module, when detecting whether the target charging load is in a fast-charging request state through a fast-charging protocol sub-module corresponding to the target charging load, is configured to:
detecting a quick charge protocol signal of the target charging load through a quick charge protocol sub-module corresponding to the target charging load;
when a quick charge protocol signal of the target charging load is detected, determining that the target charging load is in a quick charge request state; and
and when the quick charge protocol signal of the target charging load is not detected, determining that the target charging load is not in a quick charge request state.
3. The multi-port charge control circuit according to claim 1 or 2, wherein the first preset condition is that the output current of the charging path is lower than the preset current threshold, and the output current of the charging path is kept lower than the preset current threshold for a duration exceeding a second preset time threshold; wherein the second preset time threshold is smaller than the first preset time threshold.
4. The multi-port charging control circuit according to claim 1 or 2, wherein the charging control module is further configured to detect whether a charging load is connected to the interface module corresponding to the charging path in the disconnected state, and to conduct the charging path in the disconnected state and having the charging load connected thereto when detecting that the charging load is connected to the charging path in the disconnected state.
5. The multi-port charge control circuit of claim 4, wherein the charge control module is further configured to:
monitoring the number of charging paths in a conducting state;
when at least two charging paths are monitored to be in a conducting state, the voltage conversion module is controlled to output a preset common charging voltage; and
when only one charging path is monitored to be in a conducting state, a target charging voltage requested by a charging load accessed by the charging path in the conducting state is acquired, and the voltage conversion module is controlled to adjust the output voltage to the target charging voltage.
6. The multi-port charging control circuit according to claim 4, further comprising a plurality of switch modules, wherein the plurality of switch modules correspond to the plurality of charging paths one-to-one, each switch module is disposed on a corresponding charging path, the charging control module is further electrically connected to the plurality of switch modules, respectively, and the charging control module controls the on-off states of the plurality of charging paths by controlling the on-off states of the plurality of switch modules.
7. The multi-port charging control circuit according to claim 1, wherein each of the detection modules further comprises a current detection sub-module electrically connected to the corresponding charging path, and the current detection sub-module is configured to detect an output current of the corresponding charging path and feed back a detection result to the charging control module.
8. A charging chip comprising the multi-port charging control circuit of any one of claims 1-7.
9. A power supply apparatus comprising:
the power supply input interface is used for receiving input voltage provided by an external power supply;
the USB interfaces are used for being electrically connected with the charging loads one by one; and
the multi-port charging control circuit of any one of claims 1-7 or the charging chip of claim 8, electrically connected between the power input interface and the plurality of USB interfaces, for receiving the input voltage and providing a charging voltage to the plurality of charging loads;
the input end of the voltage conversion module of the multi-port charging control circuit or the charging chip is electrically connected with the power input interface, and the plurality of interface modules of the multi-port charging control circuit or the charging chip are electrically connected with the plurality of USB interfaces one by one.
10. The power supply device according to claim 9, wherein the power supply device is a fast-charging portable power source or a fast-charging adapter.
11. A multi-port charging control method, wherein the multi-port charging control method is applied to the multi-port charging control circuit of any one of claims 1 to 7 or the charging chip of claim 8, and the multi-port charging control method comprises:
monitoring the number of charging paths in a conducting state;
detecting the output current of the charging path in the conducting state when at least one charging path is in the conducting state;
judging whether the output current of the charging path in the conducting state meets a first preset condition or not, wherein the first preset condition is that the output current of the charging path is lower than a preset current threshold;
when determining that the output current of one or more charging paths in a conducting state meets the first preset condition, setting the one or more charging paths meeting the first preset condition as a target charging path, and judging whether the state of a target charging load connected to the target charging path meets a second preset condition, wherein the second preset condition comprises that the target charging load is pulled out, or the target charging load is not pulled out but the duration of the output current of the target charging path kept lower than the preset current threshold exceeds a first preset time threshold; and
disconnecting the target charging path when the state of the target charging load is determined to meet the second preset condition;
wherein, judging whether the state of the target charging load accessed by the target charging path meets the second preset condition comprises:
detecting whether the target charging load is in a quick charging request state or not through a quick charging protocol sub-module corresponding to the target charging load;
when the target charging load is in a quick charging request state, determining that the target charging load is not pulled out;
when the target charging load is not in a quick charging request state, detecting whether the target charging load is pulled out or not through a plug-pull detection submodule corresponding to the target charging load;
when the target charging load is determined not to be pulled out, judging whether the duration of the output current of the target charging path, which is kept lower than the preset current threshold, exceeds the first preset time threshold or not;
and when the duration time exceeds the first preset time threshold value or when the target charging load is determined to be pulled out, determining that the state of the target charging load meets the second preset condition.
12. The multi-port charging control method according to claim 11, wherein detecting whether the target charging load is in a fast-charging request state by a fast-charging protocol sub-module corresponding to the target charging load comprises:
detecting a quick charge protocol signal of the target charging load through a quick charge protocol sub-module corresponding to the target charging load;
when a quick charge protocol signal of the target charging load is detected, determining that the target charging load is in a quick charge request state; and
and when the quick charge protocol signal of the target charging load is not detected, determining that the target charging load is not in a quick charge request state.
13. The multi-port charge control method according to claim 11, wherein the first preset condition is that the output current of the charging path is lower than the preset current threshold, and the duration of the output current of the charging path being lower than the preset current threshold exceeds a second preset time threshold; wherein the second preset time threshold is smaller than the first preset time threshold.
14. The multi-port charge control method according to claim 11, further comprising:
detecting whether an interface module corresponding to the charging path in the disconnected state has charging load access;
and when detecting that the charging load is connected into the charging path in the disconnected state, conducting the charging path in the disconnected state and connected with the charging load.
15. The multi-port charge control method according to claim 14, further comprising:
monitoring the number of charging paths in a conducting state;
when at least two charging paths are monitored to be in a conducting state, the voltage conversion module is controlled to output a preset common charging voltage; and
when only one charging path is monitored to be in a conducting state, a target charging voltage requested by a charging load accessed by the charging path in the conducting state is acquired, and the voltage conversion module is controlled to adjust the output voltage to the target charging voltage.
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113267736B (en) * 2021-05-31 2022-04-12 荣耀终端有限公司 Charging test device and method
US11588216B1 (en) 2022-05-24 2023-02-21 Inventus Power, Inc. Detecting conducting fluids in external connectors of conformable wearable battery packs using unused pins
US11777237B1 (en) 2022-05-24 2023-10-03 Inventus Power, Inc. Disconnecting power from external USB connectors of conformable wearable battery packs in the presence of conducting fluids
US11513158B1 (en) 2022-05-24 2022-11-29 Inventus Power, Inc. Detecting conducting fluids in external connectors of conformable wearable battery packs
CN117638587A (en) * 2022-08-31 2024-03-01 苏州宝时得电动工具有限公司 Power manager and control method thereof
CN115237235B (en) * 2022-09-22 2023-01-13 珠海智融科技股份有限公司 USB equipment shift-out identification circuit and method and power supply system
CN115986895B (en) * 2023-03-15 2023-07-14 珠海智融科技股份有限公司 Charging state control method and electronic equipment
CN117081205A (en) * 2023-08-21 2023-11-17 昆山迈致治具科技有限公司 Multi-channel quick charge control circuit and method, charging chip and power supply equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104065110A (en) * 2013-03-21 2014-09-24 荆涛 Charging base, charging system and charging method of electronic device
CN105656092A (en) * 2014-11-12 2016-06-08 中兴通讯股份有限公司 Charging method and apparatus
CN106026258A (en) * 2016-06-24 2016-10-12 青岛海信移动通信技术股份有限公司 Mobile terminal
CN107658926A (en) * 2017-09-27 2018-02-02 深圳英集芯科技有限公司 A kind of multi output interface fast charge control method and device
CN208257463U (en) * 2018-06-04 2018-12-18 深圳英集芯科技有限公司 A kind of multi output charging system
CN109450013A (en) * 2018-10-22 2019-03-08 中国联合网络通信集团有限公司 A kind of management method and device of base station battery

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9806547B2 (en) * 2011-09-29 2017-10-31 Texas Instruments Incorporated Circuits, devices, methods and systems to secure power-up for battery operating devices even with low current chargers and to execute other performances
CN106899056B (en) * 2017-02-25 2018-06-01 吴钰淳 Random fast charging device and method
CN207281751U (en) * 2017-09-25 2018-04-27 珠海智融科技有限公司 A kind of access detection device of USB device
CN110176792B (en) * 2019-03-22 2020-07-07 珠海智融科技有限公司 Multi-port quick-charging mobile power supply circuit and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104065110A (en) * 2013-03-21 2014-09-24 荆涛 Charging base, charging system and charging method of electronic device
CN105656092A (en) * 2014-11-12 2016-06-08 中兴通讯股份有限公司 Charging method and apparatus
CN106026258A (en) * 2016-06-24 2016-10-12 青岛海信移动通信技术股份有限公司 Mobile terminal
CN107658926A (en) * 2017-09-27 2018-02-02 深圳英集芯科技有限公司 A kind of multi output interface fast charge control method and device
CN208257463U (en) * 2018-06-04 2018-12-18 深圳英集芯科技有限公司 A kind of multi output charging system
CN109450013A (en) * 2018-10-22 2019-03-08 中国联合网络通信集团有限公司 A kind of management method and device of base station battery

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