CN111418128A - Electronic device and charging cable verification method - Google Patents
Electronic device and charging cable verification method Download PDFInfo
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- CN111418128A CN111418128A CN201780096071.8A CN201780096071A CN111418128A CN 111418128 A CN111418128 A CN 111418128A CN 201780096071 A CN201780096071 A CN 201780096071A CN 111418128 A CN111418128 A CN 111418128A
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- 238000012795 verification Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 267
- 230000008054 signal transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
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- 230000020169 heat generation Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- 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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Abstract
A charging system (10), the charging system (10) comprising an adapter (11), a charging cable (13) and an electronic device (15) to be charged. The adapter (11) comprises a first connection interface (H1) and a first processing control unit (111); the first connection interface (H1) includes a first power supply pin (Vbus1), a first data transmission pin (D1), and a second data transmission pin (D2); the first processing control unit (111) is electrically connected to the first data transmission pin (D1) or the second data transmission pin (D2). When the charging system is powered on and operated, when the electronic device receives a first check signal output by the first processing unit (111) from one of the first and second data transmission pins (D1, D2) and indicates that the adapter (11) and the charging cable (13) are original, a first charging current is provided to the electronic device (15) from the first power supply pin (Vbus 1); when the feedback information is not received, at least one of the adapter (11) and the charging cable (11) is not installed originally, and a second charging current smaller than the first charging current is provided to the electronic equipment (15) from the first power supply pin (Vbus 1). A charging cable (13) verification method is also provided for whether it is genuine along.
Description
The present invention relates to a charging system, and more particularly, to an adapter and a charging cable capable of providing quick charging for an electronic device.
With the wide application of intelligent electronic products, the power consumption of the intelligent electronic products gradually increases with the use time or running programs. Besides increasing the battery capacity of intelligent electronic products, the solution of increasing the power consumption of batteries widely at present is to charge batteries quickly to reduce the charging time.
A common solution when performing fast charging is to increase the charging current. When the charging current is increased, the heat generated by the adapter for charging, the charging cable and the electronic device to be charged during charging is also increased accordingly. Particularly, in the case of a charging cable, since the impedance of the charging cable is large due to the long length of the conductive circuit, if the charging current is increased and still has the conventional design specification, the charging cable may not be able to withstand the heat generated during the transmission of the large charging current and be damaged. In short, if the charging cable designed for normal charging is used for transmitting a large charging current during rapid charging, the charging cable will generate a large amount of heat, which results in a large electric energy loss and thus a low charging efficiency, and the cable surface temperature is too high due to an excessive heat generation amount, which may damage or even threaten the life safety of a user.
Disclosure of Invention
The embodiment of the invention discloses an adapter capable of safely providing a large charging current.
Further, a charging cable matched with the adapter and a verification method thereof are provided.
Further, an electronic device to be charged capable of safely receiving a large charging current is provided.
Further, a charging system comprising the adapter, the charging cable and the electronic device is provided.
The invention discloses an adapter which comprises a first connecting interface and a first processing control unit, wherein the first connecting interface comprises a first power supply pin, a first data transmission pin, a second data transmission pin and a first grounding pin, the first data transmission pin or the second data transmission pin is used for transmitting data signals, and the first processing control unit is electrically connected to the first data transmission pin or the second data transmission pin. When the adapter is powered on to work, the first processing control unit outputs a first verification signal from the first data transmission pin or the second data transmission pin, and when feedback information that the first verification signal passes verification is received, a first charging current is provided from the first power supply pin; and when the feedback information that the first verification signal passes verification is not received, providing a second charging current from the first power supply pin, wherein the second charging current is smaller than the first charging current.
The invention discloses a charging cable which comprises a first interface and a second interface. The first interface is used for connecting an adapter and comprises a second power supply pin, a third data transmission pin, a fourth data transmission pin and a second grounding pin. The second interface is used for connecting to-be-charged electronic equipment and comprises a third power supply pin, a fifth data transmission pin, a sixth data transmission pin, a third grounding pin and a first addressing pin, wherein the fifth data transmission pin is electrically connected with the third data transmission pin to form a first data transmission line, and the sixth data transmission pin is electrically connected with the fourth data transmission pin to form a second data transmission line. A first resistor is electrically connected between the first data transmission line or the second data transmission line and the first addressing pin, and when the second interface is electrically connected with the electronic device, the first resistor is used for being matched with the resistor connected to the first addressing pin so that the first data transmission line or the second data transmission line transmits data signals.
The embodiment of the invention discloses electronic equipment which comprises a fourth interface and a second processing control unit. The fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin; the second processing control unit is electrically connected to the seventh data pin, the eighth data transmission pin and the second addressing pin. A second resistor is electrically connected between the second addressing pin and the fourth grounding pin; one of the seventh data transmission pin or the eighth data transmission pin and the second addressing pin are matched with each other to transmit data signals.
The embodiment of the invention further discloses electronic equipment which comprises a fourth interface and a second processing control unit, wherein the fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin. And the seventh data transmission pin, the eighth data transmission pin and the second addressing pin are electrically connected with the second processing control unit. The second addressing pin is grounded through the second resistor; when the fourth interface is connected to the adapter through the charging cable, the second resistor cooperates with a resistor in the charging cable so that the seventh data transmission pin or the eighth data transmission pin and the second addressing pin cooperate with each other to transmit a data signal. When the electronic device is electrically connected with the adapter through the charging cable and is electrified, and the second processing control unit receives a data signal from the second addressing pin, the seventh data transmission pin or the eighth data transmission pin, the second processing control unit judges that the charging cable is original.
The embodiment of the invention discloses a charging system which comprises an adapter, an electronic device and a charging cable for connecting the adapter and the electronic device. The adapter comprises a first connection interface and a first processing control unit, wherein the first connection interface comprises a first power supply pin, a first data transmission pin, a second data transmission pin and a first grounding pin, the first data transmission pin or the second data transmission pin is used for transmitting data signals, and the first processing control unit is electrically connected to the first data transmission pin or the second data transmission pin. The charging cable comprises a first interface and a second interface; the first interface is used for connecting an adapter and comprises a second power supply pin, a third data transmission pin, a fourth data transmission pin and a second grounding pin. The second interface is used for connecting to-be-charged electronic equipment and comprises a third power supply pin, a fifth data transmission pin, a sixth data transmission pin, a third grounding pin and a first addressing pin, wherein the fifth data transmission pin is electrically connected with the third data transmission pin to form a first data transmission line, and the sixth data transmission pin is electrically connected with the fourth data transmission pin to form a second data transmission line. The electronic equipment comprises a fourth interface and a second processing control unit; the fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin; the second processing control unit is electrically connected to the seventh data pin, the eighth data transmission pin and the second addressing pin. When the adapter is powered on to work, the first processing control unit outputs a data signal from the first data transmission pin or the second data transmission pin; a first resistor is electrically connected between the first data transmission line or the second data transmission line and the first addressing pin, and when the second interface is electrically connected with the electronic device, the first resistor is used for being matched with the resistor connected to the first addressing pin so that the first data transmission line or the second data transmission line transmits the data signal; a second resistor is electrically connected between the second addressing pin and the fourth grounding pin; and the second processing control unit is matched with the second addressing pin to receive the data signal through one of the seventh data transmission pin or the eighth data transmission pin.
The invention provides a verification method of a charging cable, which runs on an electronic device, wherein the electronic device comprises a fourth interface and a second processing control unit, the fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin, the seventh data transmission pin, the eighth data transmission pin and the second addressing pin are electrically connected with the second processing control unit, and the second addressing pin is grounded through a second resistor, and the verification method is characterized by comprising the following steps:
when the fourth interface is connected to the adapter through a charging cable, judging whether a data signal is received from the second addressing pin and one of the seventh data transmission pin or the eighth data transmission pin;
and when the data signal is received from one of the second addressing pin and the seventh data transmission pin or the eighth data transmission pin, judging that the charging cable is original.
Compared with the prior art, whether the adapter and the charging cable are originally installed or not and whether the adapter and the charging cable are suitable for providing rapid charging with larger first charging current or not during original installation are judged through whether the adapter, the charging cable and the electronic equipment are matched with the transmission of a predetermined data signal or not at the designated pin.
Furthermore, the electronic device to be charged checks and judges the first check signal contained in the data signal, so that whether the charging cable is suitable for transmitting the first charging current for quick charging can be effectively identified, and the situation that the design specification of the charging cable cannot bear the higher first charging current and is damaged, even the adapter or the electronic device to be charged is damaged is prevented.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of an overall connection structure of a charging system according to an embodiment of the present invention;
FIG. 2 is a waveform diagram of a first verification signal according to an embodiment of the invention;
fig. 3 is a schematic view of an overall connection structure of a charging system according to another embodiment of the present invention;
fig. 4 is a flowchart of a method for verifying a first verification signal by an electronic device according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method for verifying an adapter and a cable according to an embodiment of the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The circuit structure and the operation principle of the charging system will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the charging system 10 includes an adapter 11, a charging cable 13, and an electronic device 15 to be charged, which are electrically connected to each other. The adapter 11 is configured to provide a power signal, and the charging cable 13 transmits the power signal to the electronic device 15 to be charged, so as to provide power supply for an energy storage unit (not shown) in the electronic device 15 to be charged for storing electric energy.
The power signal includes a charging voltage and a charging current. The electronic device 15 can determine whether the adapter 11 and the charging cable 13 are suitable for fast charging by determining whether the adapter 11 and the charging cable 13 are original. That is, when the electronic device 15 determines that the adapter 11 and the charging cable 13 are installed as they are, the fast charging can be performed through the adapter 11 and the charging cable 13; when the electronic device 15 determines that the adapter 11 and the charging cable 13 are not installed, that is, not installed, the adapter 11 and the charging cable 13 are not suitable for performing fast charging, and only can perform normal charging. It is understood that the charging current of the quick charging is larger than the conventional charging current, and of course, the charging time of the electronic device 15 can be shortened and the charging efficiency can be improved during the quick charging.
The adapter 11 may be a voltage adapter that directly converts an ac power supply into a dc power supply signal and directly outputs the dc power supply signal, or may be an energy storage power supply that converts an ac power supply into a dc power supply signal and stores the dc power supply signal, such as a portable energy storage power supply like a charger.
Specifically, the adaptor 11 includes a first interface H1, a first process control unit 111, and a power supply unit 113. The first interface H1 includes a first power supply pin Vbus1, a first data transmission pin D1, a second data transmission pin D2, and a first ground pin G1.
The power supply unit 113 is electrically connected to the first power pin Vbus1 and the first ground pin G1, and the power supply unit 113 is configured to output and provide a charging voltage and a charging current in the power signal through the first power pin Vbus1 and the first ground pin G1. In this embodiment, the first power pin Vbus1 and the first ground pin G1 cooperate to provide a first charging voltage and a first charging current or a first charging voltage and a second charging current. The second charging current is smaller than the first charging current, the first charging current corresponds to the fast charging of the adapter 11, and the second charging current corresponds to the normal charging of the adapter 11. In this embodiment, the first charging voltage is 5V, the first charging current is 4A-6A, and the second charging current is 1A.
The first processing control unit 111 is electrically connected to the first data transmission pin D1 or the second data transmission pin D2, i.e., the first data transmission pin D1 and the second data transmission pin D2 are not electrically connected to the first processing control unit 111 at the same time. In this embodiment, the first processing control unit 111 is electrically connected to the second data transmission pin D2, and the first data transmission pin D1 is floating, i.e., the first data transmission pin D1 is not connected to the first processing control unit 111 and other electronic components and conductive circuits. After the adaptor 11 is powered on, the first processing control unit 111 first outputs a data signal to the charging cable 13 and the electronic device 15 to be charged through the second data transmission pin D2.
In one embodiment, the data signal includes a first check signal as shown in fig. 2. Fig. 2 is a waveform diagram of a first calibration signal, and as shown in fig. 2, the first calibration signal is a Pulse Width Modulation (PWM) signal including n pulses, each Pulse including a first time Width T. In this embodiment, n is 8, but of course, in other modified embodiments of the present invention, n may be adjusted according to actual needs, and is a natural number greater than 1, such as 6, 7, 9, 10, and the like.
In another embodiment of the present invention, the first processing control unit 111 is electrically connected to the first data transmission pin D1, and the second data transmission pin D2 is floating, i.e., the second data transmission pin D2 is not connected to other electronic components or conductive circuits. The first process control unit 111 may transmit the PWM signal through the first data transmission pin D1.
The first verification signal is used to verify whether the charging cable 13 and the adapter 11 are genuine and suitable for transmitting the first charging current. When the electronic device 15 to be charged receives the data signal including the first verification signal, it can indicate that the charging cable 13 and the adapter 11 are genuine, and correspondingly, when the electronic device 15 to be charged does not receive the data signal, it can indicate that the charging cable 13 and/or the adapter 11 are not genuine. Further, the verification for the first verification signal is performed by the electronic device 15 to be charged. When the verification passes, the adapter 11 supplies a first charging current through the first power supply pin Vbus1, and when the verification fails, the adapter 11 supplies a second charging current through the first power supply pin Vbus 1.
Preferably, when the verification is passed, the second data transmission pin D2 also receives feedback information from the electronic device 15 to be charged through the charging cable 13, wherein the feedback information includes or represents a verification completion signal. The first processing control unit 111, upon receiving the verification completion signal, controls the first power supply pin Vbus1 to provide the first charging current. When the verification fails, the first processing control unit 111 cannot receive the verification completion signal, and accordingly controls the first power supply pin Vbus1 to provide the second charging current.
Further, when the first processing control unit 111 does not receive the verification completion signal within the first predetermined time period, indicating that the verification is not passed, the first power supply pin Vbus1 is controlled to provide the second charging current accordingly. The first preset time period may be set according to actual requirements, for example, 3 seconds.
In this embodiment, the first interface H1 is an a-type interface of USB2.0 specification, wherein the first power pin Vbus1 is a power pin Vbus, the first data transmission pin D1 corresponds to the data transmission pin D +, the second data transmission pin D2 corresponds to the data transmission pin D-, the first data transmission pin D1 is electrically disconnected from the second data transmission pin D2, and the first ground pin G1 is a ground pin GND.
The charging cable 13 includes a second interface H2 and a third interface H3, wherein the second interface H2 is used for connecting the first interface H1 of the adapter 11, and the third interface H3 is used for connecting the electronic device 15 to be charged.
The second interface H2 includes a second power supply pin Vbus2, a third data transmission pin D3, a fourth data transmission pin D4, and a second ground pin G2.
The third data transmission pin D3 and the fourth data transmission pin D4 cooperate with each other for transmitting data.
The third interface H3 includes a third power supply pin Vbus3, a fifth data transmission pin D5, a sixth data transmission pin D6, a third ground pin G3, and a first address pin ID 1.
The second power pin Vbus2 and the second ground pin G2 correspond to the third power pin Vbus3 and the third ground pin G3, respectively, that is, the third power pin Vbus3 is electrically connected to the second power pin Vbus2, and the third ground pin G3 is electrically connected to the second ground pin G2. The second power pin Vbus2 and the second ground pin G2, and the third power pin Vbus3 and the third ground pin G3 are used for transmitting a first charging voltage and a first charging current, or transmitting a first charging voltage and a second charging current.
The fifth data transmission pin D5 is electrically connected to the third data transmission pin D3, thereby forming a first data transmission line L1, and the sixth data transmission pin D6 is electrically connected to the fourth data transmission pin D4, thereby forming a second data transmission line L2.
In this embodiment, the first resistor r1 is electrically connected between the second data transmission line L2 of the charging cable 13 and the first addressing pin ID1, and the second data transmission line D2 of the second data transmission line L2 connected to the first addressing pin ID1 on the adapter 11 is electrically connected to the first processing control unit 111, that is, when the second data transmission line L2 is connected to the first addressing pin ID1, the first addressing pin ID1 is electrically connected to the first processing control unit 111.
In this embodiment, a first resistor R1 is electrically connected between the second data transmission line L of the charging cable 13 and the first addressing pin ID1, that is, the first resistor R1 is electrically connected between the sixth data pin D6 and the first addressing pin ID1, so that the first resistor R1 makes the sixth data pin D6 and the first addressing pin ID1 cooperate with each other to enable the cable 13 to transmit data signals between the adaptor 11 and the electronic device 15 to be charged, specifically, when the fourth data transmission pin D4 receives the first verification signal from the second data transmission pin D2, the first verification signal is transmitted to the first addressing pin ID1 and the sixth data pin D6 through the first resistor R1.
Correspondingly, when the first address pin ID1 receives the verification completion signal, the verification completion signal is transmitted to the fourth data transmission pin D4 through the sixth data transmission pin D6 and the first address pin ID1 connected to the first resistor R1, and then the second power supply pin Vbus2 transmits the first charging current to the third power supply pin Vbus 3. On the contrary, when the fourth data transmission pin D4 does not receive the verification completion signal, the second power supply pin Vbus2 transmits the second charging current to the third power supply pin Vbus 3.
In this embodiment, the second power pin Vbus2 corresponds to the first power pin Vbus1, the second ground pin G2 corresponds to the first ground pin G1, the third data transmission pin D3 corresponds to the first data transmission pin D1, and the fourth data transmission pin D4 corresponds to the second data transmission pin D2.
The second interface H2 is a type A interface of the USB2.0 specification, and the third interface H3 is a Micro type B interface of the USB2.0 specification.
The second power pin Vbus1 and the third power pin Vbus2 are power pins Vbus, the third data transmission pin D1 and the fifth data transmission pin D5 are data transmission pins D +, the fourth data transmission pin D4 and the sixth data transmission pin D6 are data transmission pins D-, and the second ground pin G2 and the third ground pin G3 are ground pins GND.
It should be noted that, when the charging cable 13 is in the charging state, the second power pin Vbus2 and the third power pin Vbus3 cooperate with the second ground pin G2 and the third ground pin G3 to provide the first charging current or the second charging current for the electronic device 15 to be charged, the charging cable 13 may also be in the data signal transmission state, specifically, when the device connected to the second data interface H2 of the charging cable 13 is the adaptor 11, the data signal transmission may be implemented by the cooperation of the first transmission line L1 or the second data transmission line L2 and the first addressing pin ID1, and when the device connected to the second data interface H2 of the charging cable 13 is other terminal device, such as a mobile phone, a notebook computer, or a desktop computer, the data signal transmission may be implemented by the cooperation of the first transmission line L1 and the second data transmission line L2.
The electronic device 15 to be charged includes a fourth interface H4, a second processing control unit 151, and a power supply unit 153. The fourth interface H4 is electrically connected to the third interface H3 of the charging cable 13, and is used for transmitting data signals to the second processing control unit 151 or power signals to the power unit 153.
Specifically, the fourth interface H4 includes a fourth power supply pin Vbus4, a seventh data transmission pin D7, an eighth data transmission pin D8, a fourth ground pin G4, and a second address pin ID 2.
The seventh data transmission pin D7, the eighth data transmission pin D8 and the second address pin ID2 are all electrically connected to the second processing control unit 151.
The second addressing pin ID2 is connected to the second resistor R2, and the second resistor R2 and the fourth ground pin G4 are both grounded.
The fourth power supply pin Vbus4 corresponds to the third power supply pin Vbus3, the fourth ground pin G4 corresponds to the third ground pin G3, the seventh data transmission pin D7 corresponds to the fifth data transmission pin D5, the eighth data transmission pin D8 corresponds to the sixth data transmission pin D6, and the second addressing pin ID2 corresponds to the first addressing pin ID 1.
The second resistor R2 and the first resistor R1 are connected in series to the second data transmission line L through the first and second addressing pins ID1 and ID2, and the first resistor R2 and the first resistor R1 cooperate with each other to serve as a pull-down resistor of the sixth data transmission pin D6, so that the eighth data transmission pin D8 electrically connected to the sixth data transmission pin D6 cooperates with the second addressing pin ID2 for data transmission.
The second processing control unit 151 is electrically connected to the second address pin ID2 and the eighth data transmission pin D8 to receive a data signal including a first check signal, so as to determine whether the data signal is a predetermined data signal. Specifically, when the received data signal is a preset data signal, the second processing control unit 151 determines that the charging cable 13 is an original charging cable. Of course, the second processing control unit 151 may determine that the charging cable 13 is an original charging cable and also determine that the adapter 11 is not an original adapter. In this embodiment, the predetermined data signal is a PWM signal with a time span of a first predetermined T1 time value.
Preferably, the second processing control unit 151 further checks the first check signal, and determines whether to output a verification completion signal according to a check result after the first check signal is checked. That is, after the first verification signal passes verification, it indicates that the adapter 11 and the charging cable are suitable for fast charging, the second processing control unit 151 controls the power supply unit 153 to enter a fast charging mode, that is, controls the power supply unit 153 to receive the first charging current through the fourth power supply pin Vbus4 and the fourth ground pin G4, and meanwhile, the second processing control unit 151 outputs a verification completion signal through the second addressing pin ID2 and the eighth data transmission pin D8 or only through the eighth data transmission pin D8 and transmits the verification completion signal to the adapter 11 through the charging cable 13; on the contrary, when the first verification signal is not verified, it indicates that the adapter 11 and the charging cable are not suitable for fast charging, the second processing control unit 151 controls the power supply unit 153 not to enter the fast charging mode, that is, controls the power supply unit 153 to receive the second charging current through the fourth power supply pin Vbus4 and the fourth ground pin G4, and meanwhile, the second processing control unit 151 does not output the verification completion signal. Note that the second processing control unit 151 sets the second addressing pin ID2 to an input state in advance.
Preferably, the verification completion signal includes the power of the power supply unit 153 and the maximum current flow information allowed to be input by the power supply unit 153, so that the adapter 11 determines the magnitude or the duration of the first charging current.
In addition, the verification completion signal is specifically transmitted through the second address pin ID2 and the eighth data transmission pin D8 or only through the eighth data transmission pin D8 depending on the type of the verification completion signal. Specifically, when the verification completion signal is a differential signal, the verification is transmitted through the second address pin ID2 and the eighth data transmission pin D8; when the verification completion signal is a single-ended signal, the transmission is performed only through the eighth data transmission pin D8.
Correspondingly, when the verification is passed and the verification completion signal is provided to the adapter 11, the first charging current may be received from the fourth voltage pin Vbus4 to charge the power supply unit 153; when the verification fails, a second charging current is received through the fourth voltage pin Vbus4 to charge the power supply unit 153.
Preferably, after the second processing control unit 151 receives the first verification signal and performs the verification, if the verification passes, the second processing control unit 151 outputs a verification completion signal at a first predetermined time, and transmits the verification completion signal to the adapter 11 through the second addressing pin ID2 and the eighth data transmission pin D8, that is, after the first verification signal passes the verification, the second processing control unit 151 outputs the verification completion signal to the adapter 11 at a first predetermined time when the first verification signal is received; if the verification fails, the verification completion signal cannot be output at the first preset time. Wherein the verification completion signal represents the feedback information.
The fourth interface H4 is a Micro B interface of USB2.0 specification, in which the fourth power pin Vbus4 is a power pin Vbus, the seventh data transmission pin D7 corresponds to a data transmission pin D +, the eighth data transmission pin D8 corresponds to a data transmission pin D ", and the fourth ground pin G4 is a ground pin GND.
It should be noted that, the electronic device 15 to be charged is in a charging state, that is, the fourth power pin Vbus4 cooperates with the fourth ground pin G4 to provide the first charging current or the second charging current to the power unit 153 for the electronic device 15. The electronic device 15 may also be in a data signal transmission state, in which the second addressing pin ID2 cooperates with the seventh data transmission pin D7 or the eighth data transmission line D8 to perform data signal transmission; or the seventh data transmission pin D7 and the eighth data transmission line D8 cooperate with each other to perform data signal transmission.
Please refer to fig. 3, which is a schematic diagram of an overall connection structure of a charging system according to another embodiment of the present invention. As shown in fig. 3, the charging system 20 and the charging system 10 have substantially the same structure and connection relationship, except that:
corresponding to the adaptor 21, the first processing unit 211 is electrically connected to the first data transmission pin D1, and the second data transmission pin D2 is floating, i.e., the second data transmission pin D2 is not connected to other electronic components or conductive circuits.
Corresponding to the charging cable, the first resistor R1 is electrically connected between the first data line L1 and the first address pin ID1, that is, the first resistor R1 is electrically connected between the first data line D1 and the first address pin ID1, therefore, it can be seen that the first data transmission pin D1 connected to the first data line L1 connected to the first address pin ID1 on the adaptor 21 is electrically connected to the first processing control unit 211, that is, when the first data line L1 is connected to the first address pin ID1, the first data transmission pin D1 is electrically connected to the first processing control unit 211.
The second resistor R2 and the first resistor R1 are connected in series to the first data transmission line L through the first and second address pins ID1 and ID2 to serve as a pull-down resistor of the fifth data transmission pin D5, so that the seventh data transmission pin D7 and the second address pin ID2 cooperate with each other for data transmission.
Corresponding to the electronic device 25 to be charged, the second processing control unit 251 is electrically connected to the second addressing pin ID2 and the seventh data transmission pin D7 to receive the first verification signal, perform verification on the first verification signal, and determine whether to output a verification completion signal according to a verification result after the verification is completed. After receiving the first verification signal and performing the verification, the second processing control unit 151 outputs a verification completion signal to the second address pin and the seventh data transmission pin D7 at a first predetermined time if the verification passes, and fails to output the verification completion signal at the first predetermined time if the verification fails. When the charging system 20 is powered on, the fifth data pin D5 and the first addressing pin ID1 cooperate with each other to allow the cable 13 to transmit data signals between the adapter 11 and the electronic device 15 to be charged. Specifically, when the third data transmission pin D3 receives the first verification signal from the first data transmission pin D1, the first verification signal is transmitted to the seventh data pin D7, the first address pin ID1 and the second address pin ID2 through the fifth data pin D5 and the first resistor R1. The second processing unit 251 receives the first verification signal from the seventh data pin D7 and the second address pin ID2 and performs verification.
Correspondingly, when the first address pin ID1 receives the verification completion signal, the verification completion signal is transmitted to the third data transmission pin D3 through the fifth data transmission pin D5 and the first address pin ID1 connected to the first resistor R1, and then the second power supply pin Vbus2 transmits the first charging current to the third power supply pin Vbus 3. On the contrary, when the third data transmission pin D3 does not receive the verification completion signal, the second power pin Vbus2 transmits the second charging current to the third power pin Vbus 3.
Please refer to fig. 4, which is a flowchart illustrating the electronic device 15 to be charged shown in fig. 1-3 performing a verification process on the first verification signal.
The second processing unit 151 specifically includes the following steps when performing the verification:
In this embodiment, the second processing control unit 151 receives the first verification signal from the second address pin ID2 and the eighth data transmission pin D8. The first check signal is a Pulse Width Modulation (PWM) signal.
In another embodiment, the second processing control unit 151 receives the first verification signal from the second address pin ID2 and the seventh data transmission pin D7.
Preferably, when the first verification signal is analyzed in step 402, the number of pulses is increased by 1 when the time width of the pulse is equal to the first time length, which indicates that one pulse is successfully acquired.
When the number of the acquired pulse signals with the time width of the first time is equal to a preset value, the first check signal is indicated to pass the check; otherwise, when the number of the acquired pulse signals with the time width of the first time is not equal to the preset value, it is indicated that the first verification signal verification fails. When the first verification information is not verified, the adapter 11 outputs a second charging current to supply power to the electronic device 15.
Preferably, when the time width of the pulse is not equal to the first time length, it indicates that the pulse acquisition fails, the number of times of pulse capture failure is recorded, and when the number of times of capture failure is greater than the second threshold, it indicates that the verification fails.
Alternatively, in other embodiments of the present invention, when the time width of a pulse signal is greater than the first time, the pulse signal is not verified. The second threshold value may be set according to actual requirements, for example 10.
Preferably, the first preset time may be the same as the sum of the time lengths of the n pulse signals to be analyzed.
Specifically, in one embodiment, the verification completion signal may be transmitted to the adapter through the second address pin ID2 and the eighth data transmission pin D8 or only the eighth data transmission pin D8. When the verification completion signal is a differential signal, the verification completion signal is transmitted to the adapter through the second address pin ID2 and the eighth data transmission pin D8. When the verification completion signal is a single-ended signal, the verification completion signal is transmitted to the adapter only through the eighth data transmission pin D8.
In another embodiment, the verification completion signal may be transmitted to the adapter through the second address pin ID2 and the seventh data transmission pin D7 or only the seventh data transmission pin D7. When the verification completion signal is a differential signal, the verification completion signal is transmitted to the adapter through the second address pin ID2 and the seventh data transmission pin D7. When the verification completion signal is a single-ended signal, the verification completion signal is transmitted to the adapter only through the seventh data transmission pin D7.
Fig. 5 is a flowchart illustrating steps of a method for verifying whether the adapter and the cable are installed originally according to an embodiment of the present invention. As shown in fig. 5, the method includes the steps of:
in step 501, when the fourth interface H4 is connected to the adapters 11 and 21 through the charging cables 13 and 23, it is determined whether the second processing control unit 151 receives data signals from the second addressing pin ID2 and the seventh data transmission pin D7 or from the second addressing pin ID2 and the eighth data transmission pin D8. If yes, go to step 502; if not, go to step 503.
It is understood that, heretofore, the first interface H1 of the adaptor 11 is plugged into and electrically connected with the second interface H2 of the charging cable 13, the third interface H3 of the charging cable 13 is plugged into and electrically connected with the fourth interface H4 of the electronic device 15 to be charged, and the adaptor 11 is electrically operated.
In this embodiment, when the second processing control unit 151 receives the data signal from the second address pin ID2 and the seventh data transmission pin D7 or from the second address pin ID2 and the eighth data transmission pin D8, the second processing control unit 151 determines that the charging cable 13 is genuine, that is, determines that the charging cable 13 is genuine. Preferably, the second processing control unit 151 further determines that the adapter 11 is also genuine, that is, determines that it is the genuine adapter 11.
The third interface H3, where the original charging cable 11 is connected to the electronic device 15, includes a first addressing pin ID1, and a first resistor R1 is electrically connected between the first data transmission line L1 or the second data transmission line L2 and the first addressing pin ID1, and the first resistor R1 is matched with the second resistor R2 to enable the first data transmission line L1 or the second data transmission line L2 to normally transmit data signals.
The original adaptor 11 comprises first processing control units 111 and 211, and a first data transmission pin D1 and a second data transmission pin D2 for electrically connecting with the charging cables 13 and 23, wherein the first data transmission pin D1 and the second data transmission pin D2 are not electrically connected with the first processing control units 111 and 211 at the same time, and the first data transmission pin D1 or the second data transmission pin D2 is used for transmitting the data signal.
Specifically, corresponding to the second interface H2 and the first interface H1, the second power pin Vbus2 is electrically connected to the first power pin Vbus1, the second ground pin G2 corresponds to the first ground pin G1, the third data transmission pin D3 corresponds to the first data transmission pin D1, and the fourth data transmission pin D4 corresponds to the second data transmission pin D2. Corresponding to the fourth interface H4 and the third interface H3, the fourth power pin Vbus4 is electrically connected to the third power pin Vbus3, the fourth ground pin G4 is electrically connected to the third ground pin G3, the seventh transmission pin D7 is electrically connected to the fifth data transmission pin, the eighth data transmission pin D8 is electrically connected to the sixth data transmission pin D6, and the second addressing pin ID2 is electrically connected to the first addressing pin ID 1.
When the adapter 11 is powered on, the first processing control unit 111 outputs a first verification signal from the second data transmission pin D2, and the first verification signal is transmitted to the second processing control unit 151 through the second data transmission line L2 of the charging cable 13, the first resistor R1, the first address pin ID1, the second address pin ID2, and the seventh transmission pin D7 or the eighth transmission pin D8.
In this embodiment, the first processing control unit 112 in the adapter 11 is selectively electrically connected to one of the first data transmission pin D1 or the second data transmission pin D2, and the charging cable 13 has a first resistor R1 disposed on the first data transmission line L1 and the first addressing pin ID1 or a second resistor R1 disposed on the second data transmission line L and the first addressing pin ID1, so as to form the original adapter 11 and the original charging cable 13.
On the contrary, the first data transmission pin D1 and the second data transmission pin D2 of the adapter in the prior art are shorted together, so that the adapter in the prior art cannot transmit the data signal to the electronic device to be charged, that is, the electronic device receives the data signal transmitted by the adapter as before. When the adapter is originally installed, but the cable is not originally installed, the existing cable needs to cooperate with two data lines together to transmit the data signal, and because the original adapter has only one data transmission pin connected with the first processing control unit 112, the original adapter cannot transmit the data signal to the electronic device through the existing charging cable (the non-original cable). In this way, when the electronic device does not receive the data signal, it can be determined that at least one of the adapter 11 and the charging cable 13 is not genuine, that is, when the data signal is received and the cable 15 is genuine, it is determined that the adapter 11 is also genuine.
Preferably, when the charging cable 13 and the adaptor 11 are original, the second control unit 151 sends a verification completion signal through the second addressing pin ID2 and the seventh data transmission pin or the eighth data transmission pin, wherein the verification completion signal includes the electric quantity of the power supply unit 153 and the maximum current flow information allowed to be input.
It should be noted that, when the electronic device 15 determines that the charging cable 13 and the adapter 11 are original, it can be confirmed that the charging cable 13 and the adapter 11 are suitable for providing a large charging current to perform rapid charging on the electronic device 15 without damaging the charging cable 13 and the adapter 11. Thus, when the charging cable 13 and the adapter 11 are installed as they are, the second control unit 151 controls the power supply unit 153 to enter the fast charging mode, and increases the current passing through the fourth power supply pin Vbus4 and the fourth ground pin G4 to the first charging current.
Preferably, when the second processing control unit 151 receives the data signal and determines that the adapter 11 and the charging cable 13 are installed as they are, the second processing control unit 151 further verifies whether the data signal is a predetermined data signal, so as to further more accurately determine whether the adapter 11 and the charging cable 13 are suitable for fast charging.
Specifically, the data signal further includes a first check signal, the second processing control unit 151 analyzes the first check signal to obtain the number of pulse signals with the middle time width equal to the first time width of the first check signal, when the obtained number is the same as a preset threshold, the first check signal passes the check, the second processing control unit 151 outputs a check completion signal, and transmits the check completion signal to the first processing control unit 111 of the adaptor 11 through the second data transmission line L2 and the second addressing pin ID2, the first addressing pin ID1, the first resistor R1, the fourth data transmission pin D4, and the second data transmission pin D2, the first processing control unit 111 receives the check completion signal and accordingly provides the first charging voltage and/or the first charging current from the first power pin Vbus1 to the second power Vbus2, and accordingly provides the first charging voltage and/or the first charging current to the power supply unit Vbus4 through the third power pin Vbus3 and the fourth power supply unit 153, so-called fast charging current of the power supply unit 153 is increased from the second charging current to the second charging current Vbus 3511.
When the number of pulse signals with the time width equal to the first time width acquired by the second processing control unit 151 from the first verification signal is different from the preset threshold, it indicates that the verification fails, and the second processing control unit 151 does not output the verification completion signal. The first processing control unit 111 of the adapter 11 accordingly cannot receive the authentication completion signal. At this time, the adapter 11 supplies the second charging current from the first power pin Vbus1 to the second power pin Vbus2, and accordingly transmits the second charging current to the power unit 153 through the third power pin Vbus3 and the fourth power pin Vbus4, so as to perform the normal charging on the power unit 153. Compared with the prior art, whether the adapter 11 and the charging cable 13 are installed originally or not and whether the rapid charging for providing the larger first charging current is suitable or not when the adapter 11, the charging cable 13 and the electronic device 15 are installed originally or not are judged through whether the adapter 11, the charging cable 13 and the electronic device 15 are matched with the transmission of the predetermined data signal or not at the designated pins.
Further, the electronic device 15 to be charged checks and determines the first check signal included in the data signal, so as to effectively identify whether the charging cable 13 is suitable for transmitting the first charging current for fast charging, and prevent the design specification of the charging cable 13 from being damaged due to the fact that the charging cable cannot bear the higher first charging current, and even damage to the adapter 11 or the electronic device 15 to be charged is caused.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the core concepts of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (14)
- An electronic device comprises a fourth interface and a second processing control unit, wherein,the fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin;the seventh data transmission pin, the eighth data transmission pin and the second addressing pin are all electrically connected with the second processing control unit,the second addressing pin is grounded through the second resistor;when the fourth interface is connected to an adapter through a charging cable, the second resistor cooperates with a resistor in the charging cable to enable the seventh data transmission pin or the eighth data transmission pin and the second addressing pin to be matched with each other to transmit a data signal;when the electronic device is electrically connected with the adapter through the charging cable and is electrified, and the second processing control unit receives a data signal from the second addressing pin, the seventh data transmission pin or the eighth data transmission pin, the second processing control unit judges that the charging cable is original.
- The electronic device according to claim 1, wherein the second processing control unit further determines that the adapter is an original adapter when receiving the data signal.
- The electronic device according to claim 1 or 2, wherein the second processing control unit further determines whether the received data signal is a preset data signal; and when the received data signal is the preset data signal, the second processing control unit judges that the charging cable is the original charging cable.
- The electronic device of claim 3, wherein when the charging cable and the adapter are installed as they are, the second control unit controls the battery unit to enter a fast charging mode, and the power supply unit receives a first charging current corresponding to the fast charging mode through the fourth power supply pin and the fourth ground pin.
- The electronic device according to claim 3, wherein when the charging cable is original, the second control unit receives a verification completion signal from one of the seventh data transmission pin or the eighth data transmission pin through the second addressing pin or sends a verification completion signal only through one of the seventh data transmission pin or the eighth data transmission pin, wherein the fast charging verification completion signal includes information on an amount of power of a power supply unit of the electronic device and a maximum current flow allowed to be input by the power supply unit.
- The electronic device according to claim 3, wherein when the second processing control unit does not receive the data signal or does not receive the data signal from the second addressing pin and the seventh data transmission pin or the eighth data transmission pin, the second processing control unit determines that at least one of the charging cable or the adapter is not genuine.
- The electronic device of claim 6, wherein when the charging cable or the adapter is not genuine, the second processing control unit controls the battery to enter a normal charging mode and receives a first charging current through the fourth power pin and the ground pin.
- A verification method of a charging cable runs on an electronic device, the electronic device comprises a fourth interface and a second processing control unit, the fourth interface comprises a fourth power supply pin, a seventh data transmission pin, an eighth data transmission pin, a fourth grounding pin and a second addressing pin, the seventh data transmission pin, the eighth data transmission pin and the second addressing pin are all electrically connected with the second processing control unit, and the second addressing pin is grounded through a second resistor, the verification method comprises the following steps:when the fourth interface is connected to the adapter through a charging cable, judging whether a data signal is received from the second addressing pin and one of the seventh data transmission pin or the eighth data transmission pin;and when the data signal is received from one of the second addressing pin and the seventh data transmission pin or the eighth data transmission pin, judging that the charging cable is original.
- The method according to claim 8, wherein when the data signal is received from one of the second addressing pin and the seventh data transmission pin or the eighth data transmission pin, it is determined that the adapter connected to the charging cable is genuine.
- The method of claim 9, wherein when the data signal is received from one of the second addressing pin and the seventh data transmission pin or the eighth data transmission pin, a verification completion signal is sent through one of the second addressing pin and the seventh data transmission pin or the eighth data transmission pin or through only one of the seventh data transmission pin or the eighth data transmission pin, wherein the verification completion signal includes the battery capacity and a maximum current allowed to be input.
- The authentication method according to claim 10, further comprising the steps of:when the charging cable and the adapter are original, the battery is controlled to enter a quick charging mode, and the charging current of the battery is increased to a first charging current corresponding to the quick charging mode through the fourth power supply pin and the fourth grounding pin.
- The authentication method according to claim 11, further comprising the steps of:when the charging cable or the adapter is not original, the battery is controlled to enter a normal charging mode and a second charging current corresponding to the normal charging mode is provided for the battery through the fourth power supply pin and the grounding pin, and the second charging current is smaller than the first charging current.
- The method according to any one of claims 8 to 12, wherein an interface between the original charging cable and the electronic device includes a first addressing pin, and a first resistor is electrically connected between the first data transmission line or the second data transmission line and the first addressing pin.
- The verification method according to any one of claims 9 to 12, wherein the original adapter comprises a first processing control unit, and a first data transmission pin and a second data transmission pin which are electrically connected to the charging cable, the first data transmission pin and the second data transmission pin are not electrically connected to the first processing control unit at the same time, and the first data transmission pin or the second data transmission pin is used for transmitting the data signal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/108727 WO2019084813A1 (en) | 2017-10-31 | 2017-10-31 | Electronic device and charging cable verification method |
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| CN111418128A true CN111418128A (en) | 2020-07-14 |
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| CN201780096071.8A Pending CN111418128A (en) | 2017-10-31 | 2017-10-31 | Electronic device and charging cable verification method |
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| WO (1) | WO2019084813A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467109A (en) * | 2014-12-24 | 2015-03-25 | 广东欧珀移动通信有限公司 | Method for supplying power to electronic equipment and electronic equipment |
| CN104953629A (en) * | 2014-03-25 | 2015-09-30 | 国基电子（上海）有限公司 | Charge device |
| CN106026228A (en) * | 2016-05-26 | 2016-10-12 | 维沃移动通信有限公司 | Charging USB cable, adapter and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4572953B2 (en) * | 2008-05-14 | 2010-11-04 | セイコーエプソン株式会社 | Coil unit and electronic device using the same |
| CN102684270B (en) * | 2012-05-31 | 2014-12-10 | 华为技术有限公司 | Method for identifying type of universal serial bus (USB) chargers and USB device |
| CN102957193B (en) * | 2012-11-19 | 2015-12-23 | 中兴通讯股份有限公司 | A kind of charging management method, device and system |
| CN105048555B (en) * | 2015-08-04 | 2018-09-07 | Tcl移动通信科技（宁波）有限公司 | A kind of method and system of USB charger charging identification |
-
2017
- 2017-10-31 CN CN201780096071.8A patent/CN111418128A/en active Pending
- 2017-10-31 WO PCT/CN2017/108727 patent/WO2019084813A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953629A (en) * | 2014-03-25 | 2015-09-30 | 国基电子（上海）有限公司 | Charge device |
| CN104467109A (en) * | 2014-12-24 | 2015-03-25 | 广东欧珀移动通信有限公司 | Method for supplying power to electronic equipment and electronic equipment |
| CN106026228A (en) * | 2016-05-26 | 2016-10-12 | 维沃移动通信有限公司 | Charging USB cable, adapter and mobile terminal |
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Application publication date: 20200714 |