CN116522983B - Electronic tag chip and charging cable - Google Patents

Electronic tag chip and charging cable Download PDF

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Publication number
CN116522983B
CN116522983B CN202310794111.3A CN202310794111A CN116522983B CN 116522983 B CN116522983 B CN 116522983B CN 202310794111 A CN202310794111 A CN 202310794111A CN 116522983 B CN116522983 B CN 116522983B
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China
Prior art keywords
pin
module
adapter
charging cable
pull
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Application number
CN202310794111.3A
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Chinese (zh)
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CN116522983A (en
Inventor
汤厚涛
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Shenzhen Injoinic Technology Co Ltd
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Shenzhen Injoinic Technology Co Ltd
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Priority to CN202310794111.3A priority Critical patent/CN116522983B/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0702—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
    • G06K19/0704—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery the battery being rechargeable, e.g. solar batteries
    • 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
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • 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
    • 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
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
    • G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/0772—Physical layout of the record carrier
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07745—Mounting details of integrated circuit chips
    • 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
    • H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
    • H02J7/00043—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors using switches, contacts or markings, e.g. optical, magnetic or barcode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • 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

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application provides an electronic tag chip and a charging cable. The electronic tag chip is applied to a charging cable and comprises a digital control module, a pull-up detection module, a current source switching module, a passage switching module and a USB communication module. The pull-up detection module is used for detecting the level type of the electric signal output by the CC pin of the adapter. The pull-up detection module is also used for controlling the access switching module and the current source switching module based on the level type of the electric signal output by the CC pin of the adapter. And under the condition that the CCA pin and the CC pin are in a path, and the pull-up current source and the CC pin are disconnected, the digital control module is used for controlling the USB communication module to output a second message aiming at the first message to the adapter after determining that the first message from the adapter is received through the USB communication module. By adopting the method, the electronic tag identification of the TypeA-C cable is realized, and the applicability and the practicability of the TypeA-C cable are improved.

Description

Electronic tag chip and charging cable
Technical Field
The application relates to the technical field of charging, in particular to an electronic tag chip and a charging cable.
Background
With the rapid popularization of the power transmission protocol and the rapid popularization of the Type-C interface, more and more charging devices support the Type-C interface to charge, so that the demand of the Type A-C cable is also increased. Because the USB power transmission protocol prescribes that for the occasion that the charging current is more than 3A, an electronic tag chip is required to ensure the communication of charging information so as to ensure the charging safety. Therefore, an electronic tag chip scheme suitable for the conventional TypeA-C cable is gradually proposed.
The prior electronic tag chip scheme suitable for the charging cable comprises a first prior art and a second prior art. The first prior art is to add a memory chip between the adapter and the cable. The storage chip and the adapter carry out private identification through a single-wire protocol, and after the stored information in the chip is identified, the storage chip and the adapter are identified as private cables, a charging process is established, and high-power transmission is carried out. In the second prior art, a USB switch is used for communication with an I2C interface, the DP and the DM are multiplexed into the I2C interface, and the adapter reads the cable electronic tag information through the I2C interface to complete the protocol identification of the cable. However, the first disadvantage of the prior art is that the protocol content is easily cracked, there is a potential safety hazard, and the cost of the USB interface is increased, which is not suitable for the USB PD fast charging scenario. The second disadvantage of the prior art is that the performance cannot meet the requirement when USB is in high-speed communication due to the introduction of the USB switch. Therefore, how to safely and reliably realize the identification of the electronic tag of the typeA-C cable has become one of the technical problems to be solved urgently.
Disclosure of Invention
The embodiment of the application provides an electronic tag chip and a charging cable, which realize the electronic tag identification of a TypeA-C cable and improve the applicability and practicality of the TypeA-C cable.
In a first aspect, an embodiment of the present invention provides an electronic tag chip. The electronic tag chip is applied to a charging cable, the charging cable comprises a CCA pin and a CC pin, the adapter comprises a CC pin, the CC pin is connected with the CCA pin, the electronic tag chip comprises a digital control module, a pull-up detection module, a current source switching module, a passage switching module and a Universal Serial Bus (USB) communication module, the digital control module is connected with the USB communication module, the pull-up detection module is connected with the current source switching module, the passage switching module and the CCA pin, the current source switching module is connected with the passage switching module and the CC pin, and the passage switching module is connected with the USB communication module, the CCA pin and the CC pin. The pull-up detection module is used for detecting the level type of the electric signal output by the CC pin of the adapter after the charging cable is connected with the adapter. The pull-up detection module is further used for controlling the access switching module and the current source switching module based on the interface type of the adapter so as to control the on-off between the CCA pin and the CC pin and control whether the CC pin is connected with a pull-up current source in the current source switching module. And under the condition that the CCA pin is connected with the CC pin and the pull-up current source is disconnected with the CC pin, the digital control module is used for controlling the USB communication module to output a second message aiming at the first message to the adapter after determining that the first message from the adapter is received through the USB communication module, wherein the second message is used for determining that the charging cable is a target charging cable supporting quick charging by the adapter.
In the embodiment of the application, after the charging cable and the adapter are connected, the pull-up detection module of the electronic tag chip can detect the level type of the electric signal output by the CC pin of the adapter, and control the access switching module and the current source switching module according to the level type of the electric signal output by the CC pin of the adapter, so that the digital control module controls the USB communication module to output a second message aiming at the first message to the adapter after determining that the USB communication module receives the first message from the adapter, and the adapter can further identify the cable type of the charging cable, thereby realizing quick charging of the terminal equipment after determining that the charging cable is a target cable supporting quick charging. Through the method, the electronic tag identification of the TypeA-C cable is realized safely and reliably, and the applicability and the practicability of the TypeA-C cable are improved.
With reference to the first aspect, in a possible implementation manner, the USB communication module includes a USB PD physical layer circuit and a USB PD protocol layer circuit. The USB PD physical layer circuit is used for receiving a third message from the adapter. The digital control module is used for controlling the USB PD protocol layer circuit to identify whether the third message is the first message. And the digital control module is used for controlling the USB PD protocol layer circuit to generate the second message when the third message is determined to be the first message. The USB PD physical layer circuit is used for outputting the second message to the adapter.
With reference to the first aspect, in a possible implementation manner, the electronic tag chip further includes an encryption module, and the encryption module is connected with the digital control module. The digital control module is used for controlling the encryption module to encrypt the second message so as to obtain an encrypted second message. The digital control module is further configured to control the USB communication module to send the encrypted second message to the adapter.
With reference to the first aspect, in a possible implementation manner, the level type of the electrical signal output by the CC pin of the adapter includes a first level type and a second level type, and the pull-up detection module is configured to, when detecting that the level type of the electrical signal output by the CC pin of the adapter is the first level type, control the path switching module to enable the CCA pin to be in a path with the CC pin, and control the current source switching module to enable the pull-up current source to be disconnected from the CC pin. The pull-up detection module is used for controlling the access switching module to enable the CCA pin to be disconnected from the CC pin and controlling the current source switching module to enable the pull-up current source to be accessed to the CC pin when the level type of the electric signal output by the CC pin of the adapter is detected to be a second level type.
With reference to the first aspect, in a possible implementation manner, the first level type is used to indicate that the adapter supports fast charging, and the second level type is used to indicate that the adapter does not support fast charging.
With reference to the first aspect, in a possible implementation manner, the path switching module includes a first controllable switching device, a first end of the first controllable switching device is connected with the CCA pin, a second end of the first controllable switching device is connected with the CC pin, and a third end of the first controllable switching device is connected with the pull-up detection module.
With reference to the first aspect, in a possible implementation manner, the pull-up detection module is configured to control the first controllable switching device to be turned on when determining that a level type of an electrical signal output by a CC pin of the adapter is the first level type, so that the CCA pin and the CC pin are in a path. The pull-up detection module is further used for controlling the first controllable switching device to be turned off when the level type of the electric signal output by the CC pin of the adapter is determined to be the second level type, so that the CCA pin and the CC pin are disconnected.
With reference to the first aspect, in a possible implementation manner, the current source switching module includes the pull-up current source, a second controllable switching device and a third controllable switching device, a fourth end of the second controllable switching device and a fifth end of the third controllable switching device are connected with the pull-up detection module, a sixth end of the second controllable switching device is connected with the pull-up current source, a seventh end of the second controllable switching device is connected with an eighth end of the third controllable switching device, and a ninth end of the third controllable switching device is connected with the CC pin.
With reference to the first aspect, in a possible implementation manner, the pull-up detection module is configured to control the second controllable switching device and the third controllable switching device to be turned off when determining that a level type of an electrical signal output by a CC pin of the adapter is the first level type, so that the pull-up current source is disconnected from the CC pin. And the pull-up detection module is used for controlling the second controllable switching device and the third controllable switching device to be conducted when the level type of the electric signal output by the CC pin of the adapter is determined to be the second level type, so that the pull-up current source and the CC pin are conducted.
In a second aspect, an embodiment of the present invention provides a charging cable, including: the transmission cable at least comprises a charging connection wire and a communication connection wire. And the CCA pin and the CC pin are respectively positioned at two ends of the communication connection line and can be used for being respectively connected with an adapter and terminal equipment so that the adapter and the terminal equipment are connected through the communication connection line. The electronic tag chip is arranged at any end of the charging cable and is connected between the adapter and the terminal equipment through the communication connecting line, and the electronic tag chip is provided in the first aspect.
By implementing the embodiment of the invention, after the charging cable and the adapter are connected, the pull-up detection module of the electronic tag chip can detect the level type of the electric signal output by the CC pin of the adapter, and control the access switching module and the current source switching module according to the level type of the electric signal output by the CC pin of the adapter, so that the digital control module controls the USB communication module to output a second message aiming at the first message to the adapter after determining that the USB communication module receives the first message from the adapter, and the adapter can further identify the cable type of the charging cable, thereby realizing quick charging of the terminal equipment after determining that the charging cable is a target cable supporting quick charging. By adopting the method, the electronic tag identification of the TypeA-C cable is realized safely and reliably, and the applicability and the practicability of the TypeA-C cable are improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic diagram of a charging system according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of an electronic tag chip according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic tag chip according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of an electronic tag chip according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of an electronic tag chip according to an embodiment of the present application;
Fig. 6 is a schematic structural diagram of an electronic tag chip according to an embodiment of the present application;
Fig. 7 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application;
Fig. 8 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application;
Fig. 9 is a schematic structural diagram of a charging cable according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps is not limited to the elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
With the rapid popularization of the power transmission protocol and the rapid popularization of the Type-C interface, more and more charging devices support the Type-C interface to charge, so that the demand of the Type A-C cable is also increased. Because the power transmission protocol prescribes that for the occasion that the charging current is more than 3A, an electronic tag chip is required to ensure the communication of charging information so as to ensure the charging safety. Therefore, the technical problems to be solved by the application are as follows: how to safely and reliably realize the electronic tag identification of the TypeA-C cable.
Referring to fig. 1, fig. 1 is a schematic diagram of a charging system according to an embodiment of the application. The charging system may include: an adapter 10, a charging cable 11 and a terminal device 12. One end of the charging cable 11 is provided with a Type-A interface and a cable chamber corresponding to the interface, and the other end is provided with a Type-C interface and a cable chamber corresponding to the interface. The Type-a interface of the charging cable 11 may include a CCA pin and the Type-C interface may include a CC pin. The charging cable 11 is connected to the adapter 10 using a Type-a interface. The CCA pin of the charging cable 11 is connected to the CC pin of the adapter 10. The charging cable 11 is connected to the terminal device 12 using a Type-C interface, and specifically, the CC pin of the charging cable 11 is connected to the CC pin of the terminal device 12.
Here, in the embodiment of the present application, the charging cable 11 may also be referred to as a data line. Alternatively, the cable types of the charging cable 11 may include a first cable type and a second cable type. The charging cable 11 of the first cable type may be a cable supporting quick charging, and the charging cable 11 of the second cable type may be a cable not supporting quick charging. Alternatively, the first cable type of charging cable 11 may be UFCS (Universal FAST CHARGING Specification, new generation fusion rapid charging protocol) cable.
It should be noted that, in the embodiment of the present application, the terminal device 12 may be any electronic device that supports a charging function, such as a smart phone, a tablet computer, a portable notebook computer, a wearable device, a headset device, a smart home device, and the like. The present application is not particularly limited in terms of the implementation form of the terminal device 12.
It should be further noted that, in the embodiment of the present application, the adapter 10 may be an interface converter, such as a power adapter, capable of converting the high voltage in the mains circuit into the voltage required by the terminal device 12. The implementation of the adapter 10 is not particularly limited by the embodiment of the present application.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an electronic tag chip according to an embodiment of the application. As shown in fig. 2, the electronic tag chip 20 applied to the charging cable 11 may include a digital control module 21, a pull-up detection module 22, a current source switching module 23, a path switching module 24, and a universal serial bus USB communication module 25. The digital control module 21 is connected with the USB communication module 25, the pull-up detection module 22 is connected with the current source switching module 23, the path switching module 24 and the CCA pin of the charging cable 11, the current source switching module 23 is connected with the path switching module 24 and the CC pin of the charging cable 11, and the path switching module 24 is connected with the USB communication module 25, the CCA pin of the charging cable 11 and the CC pin of the charging cable. Here, it should be noted that, the electronic tag chip 20 is generally disposed in any cable room in fig. 1, and the location of the electronic tag chip 20 is not particularly limited in the embodiment of the present application.
In actual operation, the pull-up detection module 22 may be configured to detect the level type of the electrical signal output by the CC pin of the adapter 10 and received by the CCA pin of the charging cable 11 after the charging cable 11 and the adapter 10 are connected. Alternatively, the electrical signal output by the CC pin of the adapter 10 may be an analog voltage signal. The pull-up detection module 22 may also be configured to control the path switching module 24 and the current source switching module 23 based on the level type of the electrical signal output by the CC pin of the adapter 10, so as to control the on-off between the CCA pin and the CC pin of the charging cable 11, and control whether the CC pin of the charging cable 11 is connected to the pull-up current source in the current source switching module 23. In the case where the CCA pin of the charging cable 11 is in the path of the CC pin and the pull-up current source is disconnected from the CC pin of the charging cable 11, the digital control module 21 may be configured to, upon determining that the first message from the adapter 10 is received through the USB communication module 25, control the USB communication module 25 to output a second message for the first message to the adapter 10, where the second message is used by the adapter 10 to determine that the charging cable 11 is a target charging cable supporting fast charging.
It should be noted here that when the USB PD (USB Power Delivery, power transfer protocol) communication protocol is adopted, the first message from the adapter 10 may be a discovery identity Discovery Identity message. The second message for the first message may be an ack+ Emark message. It should be noted that, the second message for the first message may carry attribute information of the charging cable 11, and the attribute information may include a power transmission capability, a data transmission capability, a video transmission capability, ID information, and the like, so that the adapter 10 may determine the cable type of the charging cable 11 according to the attribute information carried by the second message.
Alternatively, the level types of the electrical signals output from the CC pins of the adapter 10 may include a first level type and a second level type. For example, the first level type may be a low level and the second level type may be a high level. The adapter 10 supports the fast charge when the level type of the electric signal output from the CC pin of the adapter 10 is the first level type, and the adapter 10 does not support the fast charge when the level type of the electric signal output from the CC pin of the adapter 10 is the second level type.
The USB PD protocol specifies that an adapter of a5 pin (pin) interface supports fast charging of a USB PD, and an adapter of a 4pin interface does not support fast charging.
Alternatively, in an embodiment of the present application, the target charging cable may be a charging cable 11 supporting quick charging, such as Emark (Electronically Marked Cable, electronic sign cable) cable. The embodiment of the present application does not particularly limit the implementation form of the charging cable 11.
In an alternative implementation manner, please refer to fig. 3, fig. 3 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 3, the pull-up detection module 22 may include a comparator 220, and the electronic tag chip 20 may further include a driving circuit 26. A first terminal 221 of the comparator 220 is connected to the CCA pin, a second terminal 222 of the comparator 220 is adapted to be connected to a reference voltage (Voltage reference, vref for short), and a third terminal 223 of the comparator 220 is connected to the path switching module 24 and the current source switching module 23. In a specific implementation, after the charging cable 11 establishes a connection with the adapter 10 and the system supplies power, the CCA pin of the charging cable 11 may receive an analog voltage signal output by the CC pin of the adapter 10. Further, the CCA pin of the charging cable 11 may input the received analog voltage signal to the comparator 220, and the comparator 220 may be configured to compare the analog voltage signal with the reference voltage and output a level signal, where the level type of the level signal may be the first level type or the second level type. Specifically, when the analog voltage signal is smaller than the above-described reference voltage, the comparator 220 may output a level signal of the first level type. When the analog voltage signal is greater than the reference voltage, the comparator 220 may output a level signal of the second level type.
Illustratively, it is assumed herein that the adapter 10 outputs a level signal of a first level type when fast-charging is supported, and that the adapter 10 does not support a level signal of a second level type when fast-charging is not supported. It is assumed that the adapter 10 supports fast charging. After the charging cable 11 establishes a connection with the adapter 10, the CCA pin of the charging cable 11 may receive an analog voltage signal output from the CC pin of the adapter 10. Further, the CCA pin of the charging cable 11 may input the received analog voltage signal to the comparator 220, and the comparator 220 may output a level signal of the first level type by comparing the analog voltage signal CC with the reference voltage.
In an alternative embodiment, the pull-up detection module 22 is configured to, when detecting that the level type of the electrical signal output by the CC pin of the adapter 10 is the first level type, control the path switching module 24 to make the CCA pin and the CC pin pass through by the driving circuit 26, and control the current source switching module 23 to break the pull-up current source in the current source switching module 23 and the CC pin. The pull-up detection module 22 is configured to, when detecting that the level type of the electrical signal output by the CC pin of the adapter 10 is the second level type, control the path switching module 24 by the driving circuit 26 to disconnect the CCA pin from the CC pin, and control the current source switching module 23 to disconnect the pull-up current source in the current source switching module 23 from the CC pin.
In an alternative implementation manner, please refer to fig. 4, fig. 4 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 4, the path switching module 24 may include a first controllable switching device 240. The first end 241 of the first controllable switching device 240 is connected to the CCA pin, the second end 242 of the first controllable switching device 240 is connected to the CC pin, and the third end 243 of the first controllable switching device 240 is connected to the pull-up detection module 22. For example, when the first controllable switching device 240 is a PMOS transistor, the first terminal 241 may be a source, the second terminal 242 may be a gate, and the third terminal 243 may be a drain.
In a specific implementation, the pull-up detection module 22 may be configured to control the first controllable switching device 240 to be turned on when detecting that the level type of the electrical signal output by the CC pin of the adapter 10 is the first level type, so that the CCA pin and the CC pin are in a path. The pull-up detection module 22 may be further configured to control the first controllable switching device 240 to be turned off when detecting that the level type of the electrical signal output by the CC pin of the adapter 10 is the second level type, so that the CCA pin is disconnected from the CC pin. Specifically, when the level type of the electrical signal output by the CC pin of the adapter 10 is detected to be the first level type by the comparator 220, the level signal output by the third terminal 223 of the comparator 220 may be input to the driving circuit 26 to control the first terminal 241 and the CCA pin path of the first controllable switching device 240, and the second terminal 242 and the CC pin path to enable the CCA pin and the CC pin path. When the level type of the electrical signal output by the CC pin of the adapter 10 is detected to be the second level type by the comparator 220, the level signal output by the third terminal 223 of the comparator 220 may be input to the driving circuit 26 to control the first terminal 241 of the first controllable switching device 240 to be disconnected from the CCA pin, and the second terminal 242 to be disconnected from the CC pin, so that the CCA pin is disconnected from the CC pin.
In an alternative implementation manner, please refer to fig. 5, fig. 5 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 5, the current source switching module 23 may include a pull-up current source 230, a second controllable switching device 231, and a third controllable switching device 232. The fourth terminal 233 of the second controllable switching device 231 and the fifth terminal 234 of the third controllable switching device 232 are connected to the pull-up detection module 22, the sixth terminal 235 of the second controllable switching device 231 is connected to the pull-up current source 230, the seventh terminal 236 of the second controllable switching device 231 is connected to the eighth terminal 237 of the third controllable switching device 232, and the ninth terminal 238 of the third controllable switching device 232 is connected to the CC pin.
The second controllable switch device 231 and the third controllable switch device 232 may have a backflow preventing function, so as to prevent the current of the current source switching module 23 from suddenly changing, thereby protecting the stability of the current source switching module 23 and protecting the current source switching module 23 from being damaged.
Optionally, the first controllable switching device 240, the second controllable switching device 231, and the third controllable switching device 232 may be any types of switching devices capable of being controlled according to an input signal, such as Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET, abbreviated MOS, abbreviated field effect transistor or MOS transistor), where the field effect transistors are divided into PMOS (P-channel type) and NMOS (N-channel type). The MOS tube comprises a source electrode, a grid electrode and a drain electrode. In the embodiment of the present application, the forms of the first controllable switching device 240, the second controllable switching device 231, and the third controllable switching device 232 are not particularly limited.
For example, when the first controllable switching device 240 is a PMOS transistor, the first terminal 241 may be a source, the second terminal 242 may be a gate, and the third terminal 243 may be a drain.
Here, the pull-up current source 230 may be a current source capable of outputting a direct current. In the embodiment of the present application, the current value output by the pull-up current source 230 is not particularly limited.
In a specific implementation, the pull-up detection module 22 may be configured to control the second controllable switching device 231 and the third controllable switching device 232 to be turned off when determining that the level type of the electrical signal output by the CC pin of the adapter 10 is the first level type, so that the pull-up current source 230 is disconnected from the CC pin. The pull-up detection module 22 may be further configured to, when determining that the level type of the electrical signal output by the CC pin of the adapter 10 is the second level type, control the second controllable switching device 231 and the third controllable switching device 232 to be turned on, so that the pull-up current source 230 is in communication with the CC pin. Specifically, when the level type of the electrical signal output by the CC pin of the adapter 10 is detected to be the first level type by the comparator 220, the level signal output by the third terminal 223 of the comparator 220 may be input to the driving circuit 26 to control the sixth terminal 235 of the second controllable switching device 231 to be disconnected from the pull-up current source 230, the seventh terminal 236 of the second controllable switching device 231 to be disconnected from the eighth terminal 237 of the third controllable switching device 232, and the ninth terminal 238 of the third controllable switching device 232 to be disconnected from the CC pin, so that the pull-up current source 230 is disconnected from the CC pin. When the level type of the electric signal output by the CC pin of the adapter 10 is detected to be the second level type by the comparator 220, the level signal output by the third terminal 223 of the comparator 220 may be input to the driving circuit 26 to control the sixth terminal 235 of the second controllable switching device 231 to be in a path with the pull-up current source 230, the seventh terminal 236 of the second controllable switching device 231 to be in a path with the eighth terminal 237 of the third controllable switching device 232, and the ninth terminal 238 of the third controllable switching device 232 to be in a path with the CC pin, so that the pull-up current source 230 is in a path with the CC pin.
In an alternative implementation manner, please refer to fig. 6, fig. 6 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 6, the USB communication module 25 may include a USB PD physical layer circuit 251 and a USB PD protocol layer circuit 252.USB PD physical layer circuit 251 may be operable to receive a third message from the CCA pin of adapter 10. The digital control module 21 may be used to control the USB PD protocol layer circuit 252 to identify whether the third message from the CCA pin of the adapter 10 is the first message. The digital control module 21 may be configured to control the USB PD protocol layer circuit 252 to generate a second message for the first message when the third message is determined to be the first message. USB PD physical layer circuit 251 may be operable to output a second message to the CCA pin of adapter 10.
Illustratively, the USB PD physical layer circuit 251 may be operable to receive a third message from the CCA pin of the adapter 10. The digital control module 21 may be used to control the USB PD protocol layer circuit 252 to identify whether the third message from the CCA pin of the adapter 10 is a Discovery Identity message. The digital control module 21 may be configured to control the USB PD protocol layer circuit 252 to generate ack+ Emark when the third message is determined to be Discovery Identity messages. USB PD physical layer circuit 251 may be operable to output ack+ Emark to the CCA pin of adapter 10.
Here, it should be noted that the USB PD physical layer circuit 251 may include a data transmitter and a data receiver. The data receiver is operable to receive the communication data and to decode the communication data. The data transmitter may be operable to transmit communication data. The data is sent and received in half duplex mode, and the data is sent and received on CC pins.
It is further to be appreciated that the USB PD protocol layer circuit 252 may be configured to perform identification and use of received messages, setting of message timers and timeout times, control of message retransmission mechanisms, USB PD message state machine control, and the like.
Alternatively, after the adapter 10 receives the second message, the adapter 10 may determine the cable type of the charging cable 11 according to the attribute information included in the second message. Specifically, if the adapter 10 determines that the attribute information included in the second message corresponds to the attribute information of the charging cable of the first cable type, the charging cable 11 may be determined to be a target charging cable supporting fast charging. Further, the adapter 10 may broadcast high power Sourcecap packets (60W or more) to enable fast charging of the terminal device 12. If the adapter 10 determines that the attribute information included in the second message corresponds to the attribute information of the charging cable of the second cable type, it may be determined that the charging cable 11 is a charging cable that does not support quick charging. Further, the adapter 10 does not perform processing, and performs normal charging, i.e., non-quick charging, on the terminal device 12.
In the above implementation, after the connection between the charging cable 11 and the adapter 10 is established, the pull-up detection module 22 of the electronic tag chip 20 may detect the level type of the electrical signal output by the CC pin of the adapter 10, and control the path switching module 24 and the current source switching module 23 according to the level type of the electrical signal output by the CC pin of the adapter 10, so that the digital control module 21 controls the USB communication module 25 to output a second message for the first message to the adapter 10 after determining that the USB communication module 25 receives the first message from the adapter 10, and thus the adapter 10 may identify the cable type of the charging cable 11 according to the second message, so that when determining that the charging cable 11 is the target charging cable, rapid charging of the terminal device 12 may be achieved. By adopting the method, the electronic tag identification of the TypeA-C cable is realized safely and reliably, and the applicability and the practicability of the TypeA-C cable are improved.
In an alternative implementation manner, please refer to fig. 7, fig. 7 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 7, the electronic tag chip 20 applied to the charging cable 11 may further include an encryption module 27, where the encryption module 27 is connected to the digital control module 21. The digital control module 21 may be configured to control the encryption module 27 to encrypt the second message to obtain an encrypted second message. The digital control module 21 may be further configured to control the USB communication module 25 to send the encrypted second message to the adapter 10.
Alternatively, the encryption algorithm used by the encryption module 27 to encrypt the second message may include hip hop algorithm, CRC encryption check, SHA256 encryption algorithm. In the embodiment of the present application, the encryption algorithm used by the encryption module 27 is not particularly limited.
In the above implementation, the encryption module 27 included in the electronic tag chip 20 of the charging cable 11 may encrypt the communication data between the charging cables 11 of the adapter 10, so as to ensure the security of the communication data and improve the security of the communication.
In an alternative implementation manner, please refer to fig. 8, fig. 8 is a schematic diagram of another structure of an electronic tag chip according to an embodiment of the present application. As shown in fig. 8, the electronic tag chip 20 applied to the charging cable 11 may further include a power supply module 28, where the power supply module 28 is connected to the digital control module 21. The digital control module 21 may be used to control the power supply module 28 to supply power to each module included in the electronic tag chip 20 after the adapter 10 is connected with the charging cable 11, so as to implement normal operation of the electronic tag chip 20.
The embodiment of the application also provides a charging cable. Referring to fig. 9, fig. 9 is a schematic structural diagram of a charging cable according to an embodiment of the present application. As shown in fig. 9, the charging cable 11 may include a transmission cable and an electronic tag chip 20. The transmission cable at least comprises a charging connection line 111 and a communication connection line 112, and a CCA pin and a CC pin which are respectively positioned at two ends of the communication connection line 112. The CCA pin may establish a connection with adapter 10 through the CC pin of adapter 10 and the CC pin may establish a connection with terminal device 12 through the CC pin of terminal device 12, thereby enabling adapter 10 and terminal device 12 to make a connection through communication link 112. The electronic tag chip 20 is disposed at either end of the charging cable 11 and is connected between the adapter 10 and the terminal device 12 through a communication connection 112, and the electronic tag chip 20 can implement the method or steps described in the above embodiments.
In actual operation, after the adapter 10 establishes a connection with the charging cable 11, the adapter 10 can identify the cable type of the charging cable 11 through the message sent by the electronic tag chip 20 of the charging cable 11. When the adapter 10 recognizes that the cable type of the charging cable 11 is the first cable type, it can broadcast a high-power Sourcecap packet (60W or more) to perform quick charging on the terminal device 12. The adapter can perform non-quick-charging, i.e. normal charging, of the terminal device 12 upon identifying the cable type of the charging cable 11 as the second cable type.
It should be noted that, for simplicity of description, any one of the embodiments of the electronic tag chip is described as a series of combinations of actions, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously according to the present application. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required for the present application.
Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
The foregoing describes embodiments of the present application in detail, and specific examples are applied herein to illustrate the principles and embodiments of an electronic tag chip and a charging cable of the present application, where the descriptions of the foregoing embodiments are indicative of methods and core ideas for aiding in understanding the present application; meanwhile, as for those skilled in the art, according to the concept of an electronic tag chip and a charging cable of the present application, there are various changes in the specific embodiments and application ranges, and the disclosure should not be construed as limiting the present application.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present application in further detail, and are not to be construed as limiting the scope of the application, but are merely intended to cover any modifications, equivalents, improvements, etc. based on the teachings of the application.

Claims (9)

1. The electronic tag chip is characterized in that the electronic tag chip is applied to a charging cable, the charging cable comprises a CCA pin and a CC pin, the adapter comprises a CC pin, the CC pin of the charging cable is connected with the CCA pin, the electronic tag chip comprises a digital control module, a pull-up detection module, a current source switching module, a channel switching module and a Universal Serial Bus (USB) communication module, the digital control module is connected with the USB communication module, the pull-up detection module is connected with the current source switching module, the channel switching module and the CCA pin, the current source switching module is connected with the channel switching module and the CC pin of the charging cable, the channel switching module is connected with the USB communication module, the CCA pin and the CC pin of the charging cable, the current source switching module comprises a pull-up current source, a second controllable switching device and a third controllable switching device, a fifth end of the second controllable switching device and a fifth end of the third controllable switching device are connected with the pull-up detection module, a sixth controllable switching device is connected with a seventh end of the second controllable switching device, and a seventh controllable switching device is connected with the eighth end of the second controllable switching device;
the pull-up detection module is used for detecting the level type of an electric signal output by a CC pin of the adapter after the charging cable is connected with the adapter;
The pull-up detection module is further used for controlling the access switching module and the current source switching module based on the level type of the electric signal output by the CC pin of the adapter so as to control the on-off between the CCA pin and the CC pin of the charging cable and control whether the CC pin of the charging cable is connected with a pull-up current source in the current source switching module;
And under the condition that the CCA pin is connected with the CC pin of the charging cable and the pull-up current source is disconnected with the CC pin of the charging cable, the digital control module is used for controlling the USB communication module to output a second message aiming at the first message to the adapter after determining that the first message is received by the USB communication module, wherein the second message is used for determining that the charging cable is a target charging cable supporting quick charging.
2. The electronic tag chip of claim 1, wherein the USB communication module comprises a USB PD physical layer circuit and a USB PD protocol layer circuit;
the USB PD physical layer circuit is used for receiving a third message from the adapter;
The digital control module is used for controlling the USB PD protocol layer circuit to identify whether the third message is the first message or not;
the digital control module is used for controlling the USB PD protocol layer circuit to generate the second message when the third message is determined to be the first message;
the USB PD physical layer circuit is used for outputting the second message to the adapter.
3. The electronic tag chip according to claim 1 or 2, further comprising an encryption module, the encryption module being connected to the digital control module;
The digital control module is used for controlling the encryption module to encrypt the second message so as to obtain an encrypted second message;
The digital control module is further configured to control the USB communication module to send the encrypted second message to the adapter.
4. The electronic tag chip of claim 1, wherein the level type of the electrical signal output by the CC pin of the adapter includes a first level type and a second level type, and the pull-up detection module is configured to, when detecting that the level type of the electrical signal output by the CC pin of the adapter is the first level type, control the path switching module to cause the CCA pin to be in a path with the CC pin of the charging cable, and control the current source switching module to cause the pull-up current source to be out of circuit with the CC pin of the charging cable;
The pull-up detection module is used for controlling the access switching module to enable the CCA pin to be disconnected from the CC pin of the charging cable and controlling the current source switching module to enable the pull-up current source to be connected with the CC pin of the charging cable when the level type of the electric signal output by the CC pin of the adapter is detected to be a second level type.
5. The electronic tag chip of claim 4, wherein the adapter supports fast charging when a level type of an electrical signal output from a CC pin of the adapter is a first level type;
when the level type of the electric signal output by the CC pin of the adapter is the second level type, the adapter does not support quick charging.
6. The electronic tag chip of claim 4 or 5, wherein the path switching module comprises a first controllable switching device, a first end of the first controllable switching device is connected to the CCA pin, a second end of the first controllable switching device is connected to the CC pin of the charging cable, and a third end of the first controllable switching device is connected to the pull-up detection module.
7. The electronic tag chip of claim 6, wherein the pull-up detection module is configured to control the first controllable switching device to be turned on when determining that a level type of an electrical signal output by a CC pin of the adapter is the first level type, so that the CCA pin is in a CC pin path with the charging cable;
the pull-up detection module is further used for controlling the first controllable switching device to be turned off when the level type of the electric signal output by the CC pin of the adapter is determined to be the second level type, so that the CCA pin and the CC pin of the charging cable are disconnected.
8. The electronic tag chip according to claim 4 or 5, wherein the pull-up detection module is configured to control the second controllable switching device and the third controllable switching device to be turned off when determining that a level type of an electrical signal output by a CC pin of the adapter is the first level type, so that the pull-up current source is disconnected from the CC pin of the charging cable;
And the pull-up detection module is used for controlling the second controllable switch device and the third controllable switch device to be conducted when the level type of the electric signal output by the CC pin of the adapter is determined to be the second level type, so that the pull-up current source and the CC pin of the charging cable are conducted.
9. A charging cable, comprising:
The transmission cable at least comprises a charging connecting wire and a communication connecting wire;
The CCA pin and the CC pin are respectively positioned at two ends of the communication connection line and can be used for being respectively connected with an adapter and terminal equipment so that the adapter and the terminal equipment are connected through the communication connection line;
An electronic tag chip, which is disposed at either end of the charging cable and is connected between the adapter and the terminal device through the communication connection line, the electronic tag chip being as set forth in any one of claims 1 to 8.
CN202310794111.3A 2023-06-30 2023-06-30 Electronic tag chip and charging cable Active CN116522983B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106992372A (en) * 2017-05-31 2017-07-28 珠海市魅族科技有限公司 USB cable, USB interface and adapter
CN210129644U (en) * 2019-09-25 2020-03-06 上海爻火微电子有限公司 Type A-Type C cable and cable chip thereof
CN111509815A (en) * 2020-05-29 2020-08-07 维沃移动通信有限公司 Data line and charging equipment
CN112952485A (en) * 2021-01-28 2021-06-11 深圳慧能泰半导体科技有限公司 Compatible charging cable and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106992372A (en) * 2017-05-31 2017-07-28 珠海市魅族科技有限公司 USB cable, USB interface and adapter
CN210129644U (en) * 2019-09-25 2020-03-06 上海爻火微电子有限公司 Type A-Type C cable and cable chip thereof
CN111509815A (en) * 2020-05-29 2020-08-07 维沃移动通信有限公司 Data line and charging equipment
CN112952485A (en) * 2021-01-28 2021-06-11 深圳慧能泰半导体科技有限公司 Compatible charging cable and control method thereof

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