WO2023011351A1 - Procédé de communication basé sur la distribution d'énergie par bus série universel et appareil associé - Google Patents

Procédé de communication basé sur la distribution d'énergie par bus série universel et appareil associé Download PDF

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Publication number
WO2023011351A1
WO2023011351A1 PCT/CN2022/108982 CN2022108982W WO2023011351A1 WO 2023011351 A1 WO2023011351 A1 WO 2023011351A1 CN 2022108982 W CN2022108982 W CN 2022108982W WO 2023011351 A1 WO2023011351 A1 WO 2023011351A1
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WIPO (PCT)
Prior art keywords
adapter
charging device
power supply
hard reset
voltage value
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Application number
PCT/CN2022/108982
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English (en)
Chinese (zh)
Inventor
汤厚涛
Original Assignee
深圳英集芯科技股份有限公司
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Publication of WO2023011351A1 publication Critical patent/WO2023011351A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4072—Drivers or receivers
    • G06F13/4077—Precharging 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
    • H02J7/00032—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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/30—Charge provided using DC bus or data bus of a computer

Definitions

  • the present application relates to the technical field of power supply communication, in particular to a communication method and related devices based on universal serial bus power supply.
  • USB Power Delivery chargers on the market are uneven, which will cause device charging compatibility issues. Some chargers still exist. When the charger receives a hard reset signal, the serial bus voltage VBUS will not be powered off, causing the charging device to be disconnected and the communication process to be wrong.
  • This application proposes a communication method based on universal serial bus power supply and related devices, which can automatically enable the communication function of the adapter and the charging device when an abnormal situation occurs during the USB Power Delivery hard reset process, prevent the process from getting stuck, and improve Charging compatibility.
  • the embodiment of the present application provides a communication method based on universal serial bus power supply, which is applied to an adapter, and the method includes:
  • the embodiment of the present application provides a communication method based on universal serial bus power supply, which is applied to a charging device, and the method includes:
  • a data packet is received from the adapter to re-establish the powered communication link.
  • the embodiment of the present application provides a communication device powered by a universal serial bus, which is applied to an adapter, and the communication device includes:
  • a receiving unit configured to receive a hard reset signal from the charging device to perform initialization processing, the initialization processing including suspending the power supply communication link with the charging device;
  • a voltage adjustment unit configured to adjust the supply voltage to a first voltage value within a first period of time
  • a first enabling unit configured to determine that the adapter is in a hard reset abnormal state when detecting that the first voltage value has not been adjusted to a second voltage value within a second period of time, and enable the first physical layer of the adapter communication function;
  • a first communication unit configured to send a data packet to the charging device to re-establish the power supply communication link.
  • the embodiment of the present application provides a communication device powered by a universal serial bus, which is applied to a charging device, and the communication device includes:
  • a sending unit configured to send a hard reset signal to the adapter, and suspend the power supply communication link with the adapter
  • a second enabling unit configured to enable the communication function of the second physical layer of the charging device after a third period of time when it is detected that the adapter is in a hard reset abnormal state
  • the second communication unit is configured to receive a data packet from the adapter to re-establish the power supply communication link.
  • the embodiment of the present application provides an adapter, the adapter includes a processor, a memory, and one or more programs, the one or more programs are stored in the memory, and configured by the The processor is executed, and the program includes instructions for executing the steps in the method according to any one of the first aspects of the embodiments of the present application.
  • an embodiment of the present application provides a charging device, the charging device includes a processor, a memory, and one or more programs, and the one or more programs are stored in the memory and configured Executed by the processor, the program includes instructions for executing the steps in the method according to any one of the second aspect of the embodiments of the present application.
  • the embodiment of the present application provides a computer storage medium, the computer storage medium stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a processor, the processor executes The method according to any one of the first aspect and/or the second aspect of the embodiment of the present application.
  • the embodiment of the present application provides a computer product, wherein the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the above-mentioned computer program is operable to enable the computer to execute the Part or all of the steps described in any method of the first aspect and/or the second aspect.
  • the computer program product may be a software installation package.
  • Fig. 1 is a kind of output voltage curve diagram based on the universal serial bus power supply process provided by the embodiment of the present application;
  • FIG. 2 is a schematic diagram of a system architecture of a communication method based on universal serial bus power supply provided by an embodiment of the present application;
  • FIG. 3 is a schematic flowchart of a communication method based on universal serial bus power supply provided by an embodiment of the present application
  • FIG. 4 is a schematic flowchart of another communication method based on universal serial bus power supply provided by the embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another communication method based on USB power supply provided by the embodiment of the present application.
  • FIG. 6 is a block diagram of functional units of a communication device powered by a universal serial bus provided by an embodiment of the present application
  • FIG. 7 is a block diagram of functional units of another universal serial bus-based communication device provided by an embodiment of the present application.
  • USB Power Delivery referred to as USB PD
  • USB PD protocol is a USB power supply extension standard that uses a USB (Universal Serial Bus) cable to receive power at a maximum of 100W.
  • USB Universal Serial Bus
  • Downstream Facing Port can be understood as Host, DFP provides VBUS, which can provide data.
  • DFP specifically refers to the downlink transmission of data, and generally refers to the equipment for downlink data and external power supply.
  • an adapter is taken as an example for description.
  • Upstream Facing Port can be understood as Device, UFP takes power from VBUS and can provide data. Typical devices are U disk, mobile hard disk, etc.
  • Dual Role Port can be used as a device that provides power or as a device that receives power.
  • VBUS is the cable for the adapter to supply power to the charging device, and the VBUS voltage is the power supply voltage.
  • the charging device sends a Hard reset command to the adapter.
  • the adapter receives the Hard reset command, it can Adjust the output voltage to vSafe5V within t1, vSafe5V is a term in the protocol standard, generally 4.75V to 5.25V, and then adjust the output voltage from vSafe5V to vSafe0V within t2, where vSafe0V is generally 0 to 0.8V , I won’t go into details here, and finally, after waiting for t3, restore the output voltage to vSafe5V to complete the hard reset process, so as to resume subsequent USB PD communication.
  • a hard reset exception may occur.
  • the output voltage does not drop from vSafe5V to vSafe0V within t2, but continues to maintain vSafe5V, because the charging device will temporarily turn off the communication function after sending the Hard reset command.
  • the hard reset process of the adapter is detected.
  • the output voltage has not dropped from vSafe5V to vSafe0V, it cannot jump to the next process, that is, the subsequent USB PD communication cannot be performed, resulting in compatibility problems.
  • the embodiment of the present application provides a communication method based on universal serial bus power supply and related devices, which can automatically detect the hard reset abnormality in the process of USB PD, and optimize the USB PD without increasing the hardware cost. process to improve compatibility.
  • FIG. 2 is the system architecture of a communication method based on universal serial bus power supply provided in the embodiment of the present application Schematic diagram, the system architecture includes an adapter 110 and a charging device 120 .
  • the above-mentioned adapter 110 is used as a source, and can supply power to the charging device 120 , and the above-mentioned charging device 120 is used as a sink, and the above-mentioned adapter 110 can be connected to the above-mentioned charging device 120 through a cable.
  • the adapter 110 and the charging device 120 can apply the relevant protocols of the USB PD communication standard. In the embodiment of the present application, there is no further improvement on the hardware of the adapter 110 and the charging device 120. You can refer to the structure of the existing adapter and charging device. This is not specifically limited.
  • the above-mentioned adapter 110 and the above-mentioned charging device 120 are described below from the software architecture level.
  • the above-mentioned adapter 110 may include a first physical layer 111, a first protocol layer 112 and a first policy engine 113.
  • the above-mentioned charging device 120 may include The second physical layer 121 , the second protocol layer 122 and the second policy engine 123 .
  • the charging device 120 can send a hard reset Hard reset command through the second policy engine 123, and transmit it to the adapter 110 through the second protocol layer 122 and the second physical layer 121 in turn, specifically, the first physical layer 111, the first protocol layer 112 is transmitted to the first policy engine 113, and the adapter 110 can execute a corresponding hard reset process after receiving the Hard reset command.
  • the specific process will not be described in detail here, and refer to the subsequent description of the communication method based on USB power supply.
  • a hard reset is not required during normal USB PD communication between the adapter 110 and the charging device 120, and the hard reset process is performed only when an abnormal situation occurs and the method provided in the embodiment of this application is applicable.
  • a communication method based on universal serial bus power supply in the embodiment of the present application is further described in conjunction with Fig. 3, and Fig. 3 is a flow chart of a communication method based on universal serial bus power supply provided in the embodiment of the present application Schematic diagram, the communication method is applicable to the adapter, including the following steps:
  • Step 301 receiving a hard reset signal from a charging device for initialization processing.
  • the initialization process includes suspending the power supply communication link with the charging device.
  • the hard reset signal from the charging device may be received through the first physical layer, and when receiving the hard reset signal, the first physical layer transmits a first reception message to the first protocol layer of the adapter, and closes the The communication function of the first physical layer resets the first message identification counter Message ID Counter and the first retransmission counter Retry Counter through the first protocol layer, wherein the first received message is used to indicate that the hard reset has been received signal, the first message identification counter MessageIDCounter is used to record the number of times of the power supply communication link, i.e.
  • the first message identification counter Message ID Counter and the first retransmission counter Retry Counter have been reset, so the count and the number of retransmissions all become zero, which can be understood as initialization processing, and then, through the first protocol layer to the described A first policy engine of the adapter transmits the first received message.
  • the counting content can be reset, so that the USB PD communication can be restarted later.
  • Step 302 adjusting the supply voltage to a first voltage value within a first period of time.
  • the first timer may be started by the first policy engine, and the power supply voltage is adjusted to the first voltage value within the first period recorded by the first timer, and the first timer It can be NoResponseTimer, when the first strategy engine receives the first reception message and determines that the Hard reset command has been received, the first timer can be started, the first timer can be timed for the first period, and the power supply voltage needs to be at the first time. During the time period, the voltage decreases to the first voltage value, which may be Vsafe5V in the PD communication standard.
  • Step 303 when it is detected that the first voltage value is not adjusted to the second voltage value within the second time period, determine that the adapter is in a hard reset abnormal state, and enable the communication function of the first physical layer of the adapter.
  • the above-mentioned first timer can set a second time period, and when the first voltage value is not adjusted to the second voltage value within the second time period recorded by the first timer, it is determined that the The adapter is in the abnormal state of hard reset, and when it is in the abnormal state of hard reset, the communication function of the first physical layer is enabled through the first policy engine, and the above-mentioned second voltage value may be Vsafe0V in the PD communication standard.
  • the hard reset when the first voltage value is adjusted to the second voltage value within the second period recorded by the first timer, the hard reset is normal, and the subsequent process is continued Specifically, when the first voltage value is adjusted to the second voltage value within the second time period, the first policy engine may transmit a first reset message to the first protocol layer, so The first reset message is used to indicate that the power supply reset in the hard reset is completed;
  • the second reset message uses to indicate that the hard reset is complete.
  • the adapter when it is detected that the first voltage value has not been adjusted to the second voltage value within the second period of time, it is determined that the adapter is in a hard reset abnormal state, and the communication function of the first physical layer of the adapter is enabled. After a hard reset abnormality is detected, the communication function of the first physical layer is automatically restarted, which facilitates the advancement of the subsequent process, prevents the process from getting stuck, and reduces the compatibility problem in the USB PD process.
  • Step 304 sending a data packet to the charging device to re-establish the power supply communication link.
  • the data packet may be transmitted to the first protocol layer through the first policy engine, and the data packet may be a source cap packet;
  • a second timer may be started by the first protocol layer, and the data packet may be transmitted to the first physical layer, and the second timer is used to indicate a cyclic redundancy check (Cyclic Redundancy Check, CRC ), wherein the second timer can be CRCReceiveTimer, the duration of the third period can be 0.9-1.1mS, and the second timer can be used to prompt the loss of the Souce cap information sent, for example, in After sending the Souce cap message, if the GoodCRC message from the other party is not received within the third period of the second timer, that is, 0.9 ⁇ 1.1 mS, it is considered that the message has failed to be sent, and the Souce cap message is resent;
  • CRC Cyclic Redundancy Check
  • the adapter can automatically enable the communication function of the first physical layer when the hard reset is abnormal, and the driving process is advanced, which greatly increases the compatibility of the USB PD process.
  • FIG. 4 is another communication method based on Universal Serial Bus power supply provided in the embodiment of the application, which is applied to charging equipment , including the following steps:
  • Step 401 sending a hard reset signal to the adapter, and suspending the power supply communication link with the adapter.
  • the hard reset signal may be transmitted to the second protocol layer of the charging device through the second policy engine of the charging device, and the second policy engine may be Policy Engine;
  • the second message identification counter and the second retransmission counter are reset through the second protocol layer, and the hard reset signal is transmitted to the second physical layer, and the second message identification counter is used to record the power supply communication
  • the second retransmission counter is used to record the number of retransmissions of the power supply communication link
  • the second message identification counter Message ID Counter is used to record the number of times of the power supply communication link, i.e. Message ID
  • the second retransmission counter Retry Counter is used to record the number of retransmissions of the power supply communication link, here because the second message identification counter Message ID Counter and the second retransmission counter Retry Counter have been reset, so the count and the number of retransmissions all become zero;
  • Step 402 when it is detected that the adapter is in a hard reset abnormal state, enabling the communication function of the second physical layer of the charging device after a third period of time.
  • the charging device can detect the power supply voltage of the adapter in the first period and the second period;
  • the third timer is started by the second physical layer, and the communication function of the second physical layer is enabled after the third period recorded by the third timer, where the third period can be the same as that in FIG. 1
  • the duration of t3 in is the same, for example, the third period may be 800ms.
  • the second policy engine informs the second protocol layer that the charging device has been reset, waiting for the first After three periods, the communication function of the second physical layer is forcibly enabled.
  • Step 403 receiving a data packet from the adapter to re-establish the power supply communication link.
  • the data packet from the adapter may be received through the second physical layer, and the data packet may be a source cap packet;
  • the verification result GoodCRC is transmitted to the second physical layer through the second protocol layer;
  • the check result GoodCRC is fed back to the adapter through the second physical layer, so as to complete the power supply communication link.
  • the charging device can automatically enable the communication function of the second physical layer when the hard reset is abnormal, which greatly improves the compatibility of the USB PD process.
  • FIG. 5 Schematic diagram of the process, which is applied to adapters and charging devices, and specifically includes the following steps:
  • Step 501 the second policy engine sends a hard reset signal to the second protocol layer
  • Step 502 the second protocol layer transmits a hard reset signal to the second physical layer, and resets the second message identification counter and the second retransmission counter;
  • Step 503 the second physical layer transmits a hard reset signal to the first physical layer, and closes its own communication function;
  • Step 504 after receiving the hard reset signal, the first physical layer transmits the first receiving message to the first protocol layer, and closes its own communication function;
  • the first receiving message is used to indicate that a hard reset signal has been received
  • Step 505 the first protocol layer transmits the first received message to the first policy engine, and resets the first message identification counter and the first retransmission counter;
  • Step 506 the first strategy engine starts a first timer, controls the power supply voltage to be powered down to Vsafe5V in the first period, and is powered down to Vsafe0V in the second period;
  • Step 507 when the power is not down to Vsafe0V within the second time period, forcibly enable the communication function of the first physical layer through the first protocol layer;
  • Step 508 the second policy engine informs the second protocol layer that the charging device has recovered
  • Step 509 when it is detected that the adapter is in the hard reset abnormal state, start a third timer through the second protocol layer, and force enable the communication function of the second physical layer after the third time period to complete the hard reset process.
  • USB PD communication can be re-established after the hard reset is complete. The specific steps are as follows:
  • Step 510 the first policy engine sends a Soucecap packet to the first protocol layer
  • Step 511 the first protocol layer starts the second timer CRC receive timer, and sends the Souce cap packet to the first physical layer;
  • Step 512 the first physical layer sends a Source cap packet to the second physical layer and performs a CRC check
  • Step 513 the second physical layer sends a source cap packet to the second protocol layer
  • Step 514 the second protocol layer informs the second strategy engine that the source cap packet has been received, and the source cap packet is verified;
  • Step 515 the second protocol layer sends a GoodCRC message to the second physical layer
  • Step 516 the second physical layer transmits a GoodCRC message to the first physical layer
  • Step 517 the first physical layer transmits the GoodCRC message to the first protocol layer
  • Step 518 the first protocol layer transmits the GoodCRC message to the first policy engine, and stops the second timer;
  • Step 519 the first policy engine controls the first message identification counter to add one, and the USB PD communication is established successfully.
  • the USB Power Delivery process can be optimized without increasing the hardware cost.
  • the sink end process of the charging device can run normally, thereby increasing the USB Power Delivery process. Delivery charging device compatibility.
  • the electronic device includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiment of the present application may divide the electronic device into functional units according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.
  • FIG. 6 is a communication device based on A block diagram of the functional units of the USB-powered communication device 600, the device is applied to an adapter, and the device includes:
  • the receiving unit 610 is configured to receive a hard reset signal from the charging device to perform initialization processing, the initialization processing including suspending the power supply communication link with the charging device;
  • a voltage adjustment unit 620 configured to adjust the supply voltage to a first voltage value within a first period of time
  • the first enabling unit 630 is configured to determine that the adapter is in a hard reset abnormal state when detecting that the first voltage value has not been adjusted to a second voltage value within a second period of time, and enable the first physical The communication function of the layer;
  • the first communication unit 640 is configured to send a data packet to the charging device to re-establish the power supply communication link.
  • FIG. 7 is another communication device provided by the embodiment of the application.
  • a sending unit 710 configured to send a hard reset signal to the adapter, and suspend the power supply communication link with the adapter
  • the second enabling unit 720 is configured to enable the communication function of the second physical layer of the charging device after a third period of time when it is detected that the adapter is in a hard reset abnormal state;
  • the second communication unit 730 is configured to receive a data packet from the adapter to re-establish the power supply communication link.
  • the embodiment of the present application also provides an adapter, the adapter includes a processor, a memory, and one or more programs, the one or more programs are stored in the memory, and configured by the processor Execution, the program includes instructions for executing the steps in the method as described in any one of FIG. 3 .
  • An embodiment of the present application provides a charging device, the charging device includes a processor, a memory, and one or more programs, the one or more programs are stored in the memory, and configured to be processed by the Executed by a computer, the program includes instructions for executing the steps in the method as described in any one of FIG. 4 .
  • An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables the computer to execute some or all of the steps of any method described in the above method embodiments , the above-mentioned computer includes electronic equipment.
  • An embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the computer to execute any one of the methods described in the above method embodiments. Some or all steps of the method.
  • the computer program product may be a software installation package.
  • the disclosed device can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the above units is only a logical function division.
  • there may be other division methods for example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical or other forms.
  • the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the above-mentioned integrated units are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable memory.
  • the technical solution of the present application is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory.
  • a computer device which may be a personal computer, server or network device, etc.
  • the aforementioned memory includes: various media that can store program codes such as U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Power Sources (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé et un appareil de communication à base de distribution d'énergie par bus série universel (USB). Le procédé comprend : tout d'abord, la réception d'un signal de réinitialisation matérielle provenant d'un dispositif de charge (120), de manière à effectuer un traitement d'initialisation (301), le traitement d'initialisation comprenant la suspension d'une liaison de communication d'alimentation électrique avec le dispositif de charge (120); puis le réglage d'une tension d'alimentation électrique à une première valeur de tension dans une première période de temps (302); ensuite, lorsqu'il est détecté que la première valeur de tension n'est pas ajustée à une seconde valeur de tension dans une seconde période de temps, la détermination qu'un adaptateur (110) se trouve dans un état anormal de réinitialisation matérielle, et l'activation de la fonction de communication d'une première couche physique de l'adaptateur (110) (303); et enfin, l'envoi d'un paquet de données au dispositif de charge (120) pour rétablir la liaison de communication d'alimentation électrique (304). Selon le procédé et l'appareil de communication basés sur la distribution d'énergie USB, la fonction de communication de l'adaptateur (110) et du dispositif de charge (120) peut être automatiquement activée lorsqu'une anomalie se produit dans la procédure de réinitialisation matérielle de distribution d'énergie USB, la procédure est empêchée d'être interrompue, et la compatibilité de charge est améliorée.
PCT/CN2022/108982 2021-08-03 2022-07-29 Procédé de communication basé sur la distribution d'énergie par bus série universel et appareil associé WO2023011351A1 (fr)

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