CN211456730U - Identification chip, interface, transmission line, charger and charging system - Google Patents
Identification chip, interface, transmission line, charger and charging system Download PDFInfo
- Publication number
- CN211456730U CN211456730U CN202020016711.9U CN202020016711U CN211456730U CN 211456730 U CN211456730 U CN 211456730U CN 202020016711 U CN202020016711 U CN 202020016711U CN 211456730 U CN211456730 U CN 211456730U
- Authority
- CN
- China
- Prior art keywords
- pin
- charger
- data
- charging
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present disclosure relates to an identification chip, an interface, a transmission line, a charger and a charging system, wherein the identification chip comprises: a pin, comprising: the charging device comprises a first data input pin, a first data output pin, a second data input pin and a second data output pin which are used for data transmission, a charging pin used for outputting charging voltage, an identification pin used for identifying a charging mode and a result output pin used for outputting a charging mode identification result; and the processing module controls the switch between the pins to be opened or closed according to the confirmed charging mode.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to an identification chip, an interface, a transmission line, a charger, and a charging system.
Background
Ports are typically provided on the charging device and the powered device. When the port of the charging device is connected with one port of the transmission line and the port of the powered device is connected with the other connection port of the transmission line, the transmission line may transmit power or a data signal between the charging device and the powered device.
To enable fast charging of electronic devices, many fast charging modes have emerged. However, when the charging device charges the powered device in the fast charging mode, the output power of the charging device is high, and a safety accident is easily caused. Therefore, how to ensure the safety of the fast charging becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present disclosure provides an identification chip, an interface, a transmission line, a charger and a charging system.
According to a first aspect of the embodiments of the present disclosure, there is provided an identification chip, including:
a pin, comprising: the charging device comprises a first data input pin, a first data output pin, a second data input pin and a second data output pin which are used for data transmission, a charging pin used for outputting charging voltage, an identification pin used for identifying a charging mode and a result output pin used for outputting a charging mode identification result;
and the processing module controls the switch between the pins to be opened or closed according to the confirmed charging mode.
According to a second aspect of embodiments of the present disclosure, there is provided an interface comprising:
a housing; and
the charging device comprises a first data pin and a second data pin which are arranged on the shell and used for transmitting data, a power supply pin used for connecting a power supply and a mode identification pin used for identifying a charging mode; wherein the content of the first and second substances,
the first data pin is connected to a first data input pin of the identification chip according to the first aspect of the embodiment of the present disclosure, the second data pin is connected to a second data input pin of the identification chip, the power supply pin is connected to a charging pin of the identification chip, and the pattern identification pin is connected to an identification pin of the identification chip.
According to a third aspect of embodiments of the present disclosure, there is provided a transmission line comprising: the identification device comprises a first interface, a second interface, a transmission line main body for connecting the first interface and the second interface, and an identification chip provided in the first aspect of the embodiment of the disclosure;
the identification chip is arranged in the first interface, the second interface or the transmission line main body;
the first interface is connected with a first data input pin, a second data input pin, a charging pin and an identification pin of the identification chip, and the first interface is used for connecting a charger;
the second interface is connected with the first data output pin, the second data output pin, the charging pin and the result output pin of the identification chip, and the second interface is used for connecting a powered device.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a charger including:
a charger housing; and
a fifth data pin and a sixth data pin which are arranged in the charger shell and used for transmitting data, a power supply pin used for outputting power supply current, and a determination pin used for outputting a charging mode supported by a charger;
and the identification module is used for identifying the charging mode and is connected with the fifth data pin, the sixth data pin and the determination pin.
According to a fifth aspect of embodiments of the present disclosure, there is provided a charging system including:
a transmission line as provided in the third aspect of the embodiments of the present disclosure;
the charger according to the fourth aspect of the embodiments of the present disclosure is electrically connected to the power receiving device through the transmission line.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
compared with the case that the transmission line directly transmits electric energy to the powered device in the fast charging mode supported by the charger, the embodiment of the disclosure performs identity identification verification on the charger through the identification chip in the transmission line, and selects the first charging mode or the second charging mode to charge according to the reply condition of the charger, wherein the charging rate of the second charging mode is lower than that of the first charging mode, which is beneficial to ensuring the safety of the charging process.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram illustrating an identification chip in accordance with an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating another identification chip in accordance with an exemplary embodiment.
FIG. 3 is a schematic diagram illustrating an interface in accordance with an exemplary embodiment.
FIG. 4 is a schematic diagram illustrating another interface in accordance with an exemplary embodiment.
Fig. 5 is a block diagram illustrating a transmission line according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a second interface in accordance with an exemplary embodiment.
Fig. 7 is a block diagram illustrating a charger according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating a charging system in accordance with an exemplary embodiment.
FIG. 9 is a flow chart illustrating a method of charging according to an exemplary embodiment.
FIG. 10 is a flow chart illustrating another charging method according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic diagram illustrating an identification chip 100 according to an example embodiment. Referring to fig. 1, the identification chip 100 includes:
a pin, comprising: a first data input pin 1101, a first data output pin 1102, a second data input pin 1103 and a second data output pin 1104 for data transmission, a charging pin 1105 for outputting a charging voltage, an identification pin 1106 for performing charging mode identification, and a result output pin 1107 for outputting a charging mode identification result;
and a processing module 1200 for controlling the switch between the pins to be opened or closed according to the confirmed charging mode.
Illustratively, the switches between the pins may include: a transistor. For example: diodes, transistors, or field effect transistors, etc.
Taking the switch between the pins as an example of a field effect transistor, the processing module may control the on or off of the transistor by controlling the gate voltage of the field effect transistor. Specifically, when the voltage applied to the gate of the field effect transistor is greater than or equal to the first voltage, the field effect transistor is turned on, i.e., the switch is closed; when the voltage applied to the gate of the field effect transistor is less than the first voltage, the field effect transistor is turned off, i.e. the switch is turned off. Here, the first voltage may be determined according to the properties of the field effect transistor. Illustratively, the first voltage may be 1.6 volts, or 2 volts, etc.
Illustratively, the identification chip 100 may also include a first Ground (GND) pin 1108.
The charging mode may include: a first type charging mode and a second type charging mode; wherein the charging rate of the second type of charging mode is lower than the charging rate of the first type of charging mode. Specifically, the first type of charging mode may include: a fast charge mode, such as energy transfer pd (power delivery) fast charge mode or qc (quick charge) fast charge mode, etc. The second type of charging mode may include: a slow charging mode, for example, a charging mode in which charging is performed at 5 volts and 3 amperes current.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication and the charging mode identification of the charger through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and controls the switch between the pins in the identification chip to be switched off or switched on according to the confirmed charging mode so as to select the corresponding charging mode for charging, thereby improving the safety of the charging process.
In some embodiments, referring to fig. 1, the switch comprises: a first switch 1111 between the first data input pin 1101 and the first data output pin 1102, a second switch 1112 between the second data input pin 1103 and the second data output pin 1104, a third switch 1113 between the charging pin 1105 and the result output pin 1107;
the processing module 1200 includes: a first input 1201, a second input 1202 and a plurality of outputs;
a first input 1201 connected to a first data input pin 1101;
a second input 1202 connected to the second data input pin 1103;
the plurality of output terminals are respectively connected with the control terminals of the first switch 1111, the second switch 1112 and the third switch 1113, and are used for controlling the opening or closing of the first switch 1111, the second switch 1112 and the third switch 1113.
Illustratively, when the identification chip supports the I2C communication mode, the first data input pin 1101 and the second data input pin 1103 may be used for I2C communication with a connected charger. Specifically, the first data input pin 1101 and the second data input pin 1103 may be a pair of differential data input pins, for example, the first data input pin 1101 may be a D + input pin, serving as a data terminal for I2C communication; the second data input lead 1103 may be a D-input lead, which serves as a clock terminal for I2C communication. At this time, the first data output pin 1102 may be a D + output pin, and the second data output pin 1104 may be a D-output pin.
Illustratively, the plurality of outputs may include:
a first output terminal 1211 connected to a control terminal of the first switch 1111 for controlling the first switch 1111 to be opened and closed;
a second output terminal 1212 connected to a control terminal of the second switch 1112, for controlling the opening and closing of the second switch 1112;
and a third output 1213 connected to a control terminal of the third switch 1113 for controlling the opening and closing of the third switch 1113.
In some embodiments, the switch further comprises: a fourth switch 1114 between the identification pin 1106 and the result output pin 1107, a control terminal of the fourth switch 1114 being connected to one of the plurality of output terminals of the processing module 1200;
the processing module 1200 is further configured to control the fourth switch 1114 to open or close.
Illustratively, the plurality of outputs may further include: and a fourth output 1214 connected to the control terminal of the fourth switch 1114 for controlling the opening and closing of the fourth switch 1114.
In some embodiments, referring to fig. 2, the processing module 1200 may include: the first sub-module 1210 is connected to the first data input pin 1101 through the first input terminal 1201, connected to the second data input pin 1103 through the second input terminal 1202, and connected to control terminals of the first switch 1111, the second switch 1112, and the third switch 1113 through the plurality of output terminals. And a first sub-module 1210 for controlling the opening or closing of the first switch 1111, the second switch 1112, and the third switch 1113.
The first sub-module 1210 may include: I2C bus chip (I2C master).
The process module 1200 may further include: the second sub-module 1220 is connected to the first sub-module 1210. The second sub-module 1220 is configured to receive the first identity matching verification information sent by the charger when the charging mode supported by the charger is the energy transfer PD fast charging mode, encrypt the first identity matching verification information according to the set key to obtain encrypted information, and send the encrypted information to the charger.
The charger can carry out matching verification with the transmission line provided with the identification chip according to the encrypted information. When the matching verification is successful, determining that the power receiving equipment is charged by the transmission line in a first charging mode supported by a charger; and when the matching verification fails, determining to charge the power receiving equipment by using the transmission line in the second charging mode.
For example, after the charger sends the first identity matching verification information to the identification chip in the transmission line, the charger may encrypt the first identity matching verification information according to a predetermined key to obtain matching encryption information. When the charger receives the encrypted information generated by the identification chip based on the first identity matching verification information, the charger can compare the encrypted information with the matching encrypted information to obtain a comparison result.
And when the comparison result shows that the matching verification is successful, determining that the power receiving equipment is charged by the transmission line in a first charging mode supported by the charger. Specifically, the case that the comparison result indicates that the match verification is successful may include: the content of the encrypted information is the same as the content of the matching encrypted information.
And when the comparison result shows that the matching verification fails, determining to adopt a second type of charging mode to charge the power receiving equipment by using the transmission line. Specifically, the case that the comparison result indicates that the matching verification fails may include: the content of the encrypted information is different from the content of the matching encrypted information.
For example, when the charger receives the encrypted information, the charger may also decrypt the encrypted information and obtain a matching verification result according to the decryption condition.
When the charger can decrypt the encrypted information to obtain second identity matching verification information, the charger can compare the first identity matching verification information with the second identity matching verification information to obtain a matching verification result.
And when the matching verification result indicates that the matching verification is successful, determining that the power receiving equipment is charged by the transmission line by adopting a first type of charging mode supported by the charger. Specifically, the case where the matching verification result indicates that the matching verification is successful may include: the content of the first identity matching authentication information is the same as the content of the second identity matching authentication information.
And when the matching verification result indicates that the matching verification fails, determining to charge the power receiving equipment by using the transmission line in the second charging mode. Specifically, the case where the matching verification result indicates that the matching verification fails may include: the charger cannot decrypt the encrypted information, or the content of the first identity matching verification information is different from the content of the second identity matching verification information.
Illustratively, the second sub-module 1220 may include: a key generator 1222 and an encryptor 1221. The key generator 1222 is used to generate a set key. The encryptor 1221 is configured to encrypt the first identity matching information sent by the charger according to the set key to obtain encrypted information.
In the embodiment of the disclosure, the charger is subjected to matching verification through the processing module, and the adopted charging mode is determined according to the matching verification result, so that the accuracy of the identification chip for the charger identification is improved, and the safety of the charging process is improved.
The first authentication match information may include a random code. The encryptor 1221 may encrypt the random code according to the set key by the SHA256 algorithm to generate encrypted information.
In some embodiments, the identification chip 100 further comprises: a current source 1300 is located between the charging pin 1105 and the third switch 1113.
When the second type charging mode is used for charging, the charging current of the second type charging mode can be controlled by the current source 1300. Here, the magnitude of the charging current of the second type charging mode may be equal to the current value provided by the current source 1300. Accordingly, the charging current of the second type charging mode can be changed by changing the current value provided by the current source 1300, thereby limiting the output power of the charger connected to the powered device through the transmission line provided with the identification chip.
For example, the current value provided by the current source 1300 may include: 0.5 amps, 1.5 amps, or 3 amps, etc.
Fig. 3 is a schematic diagram illustrating an interface 200 according to an example embodiment. Referring to fig. 3, the interface 200 includes:
a housing 201; and
a first data pin 2101 and a second data pin 2102 for transmitting data, a power supply pin 2103 for connecting a power supply, and a mode identification pin 2104 for identifying a charging mode, which are provided on the housing 201; wherein the content of the first and second substances,
the first data pin 2101 is connected to the first data input pin 1101 of the identification chip 100, the second data pin 2102 is connected to the second data input pin 1103 of the identification chip 100, the power pin 2103 is connected to the charging pin 1105 of the identification chip 100, and the mode identification pin 2104 is connected to the identification pin 1106 of the identification chip 100, as provided by the embodiments of the present disclosure.
Illustratively, the interface 200 also includes a second ground pin 2105.
The interface 200 may include: type a universal serial bus interface.
Fig. 4 is a schematic diagram of a type a usb interface in the related art. As can be seen from fig. 3 and 4, compared to the type a usb interface in the related art, the interface 200 provided in the embodiment of the present disclosure adds the pattern recognition pin 2104 on the basis of the type a usb interface in the related art, and connects the interface 200 with the recognition chip 100.
In the embodiment of the present disclosure, when the interface 200 is connected to a charger, the interface 200 may perform multiple times of verification and identification, such as identification verification of the charger by the identification chip 100, identification of a charging mode supported by the charger, and identification matching verification of the identification chip and the charger, so as to charge the powered device by using the first charging mode or the second charging mode, thereby improving the accuracy of identification of the charger and being beneficial to improving the safety of the charging process.
In some embodiments, referring to fig. 3, first data pin 2101, second data pin 2102, and power pin 2103 all remain flush with the edge of housing 201;
the pattern recognition pins 2104 are located a predetermined distance from an edge of the housing 201.
The constituent material of the pattern recognition pin 2104 may include a conductive material having elasticity. Such as copper.
When the fourth switch 1114 in the identification chip 100 is a flip-chip switch, the pattern recognition pin 2104 can be used as a metal flip chip of the fourth switch 1114. When the fourth switch 1114 is turned off, the metal dome has a predetermined distance from the edge of the housing 201. When the fourth switch 1114 is closed, the metal spring plate is flush with the edge of the housing 201.
In this embodiment, the metal elastic sheet is used as the pattern recognition pin, the elastic sheet type switch is used as the fourth switch of the recognition chip, and the pattern recognition pin is used as the metal elastic sheet of the fourth switch, so that the effect of the pattern recognition pin and the effect of the fourth switch can be simultaneously realized by using one elastic sheet type switch, the number of elements arranged in the interface 200 comprising the recognition chip is reduced, and the cost of the interface 200 is reduced.
Fig. 5 is a schematic diagram illustrating a transmission line 300 according to an exemplary embodiment. Referring to fig. 5, the transmission line 300 includes: a first interface 310, a second interface 320, a transmission line body 330 connecting the first interface 310 and the second interface 320, and an identification chip (not shown) as provided by the embodiments of the present disclosure;
an identification chip (not shown) provided in the first interface 310, the second interface 320, or the transmission line body 330;
the first interface 310 is connected with a first data input pin, a second data input pin, a charging pin and an identification pin of the identification chip, and the first interface 310 is used for connecting a charger;
the second interface 320 is connected to the first data output pin, the second data output pin, the charging pin, and the result output pin of the identification chip, and the second interface 320 is used for connecting a powered device.
The first interface 310 includes: an interface 200 as provided by embodiments of the present disclosure;
the second interface 320 includes: a type C universal serial bus interface.
Illustratively, the transmission line 300 may be used to transmit power between a charger and a powered device. When the charger is an electronic device with communication capability, the transmission line 300 may also transmit communication signals between the charger and the powered device.
The transmission line body may include: a plurality of single wires or flat cables packaged in the conduit, etc.
The charging device may include: a charging post, a battery, or an electronic device equipped with a battery, such as a mobile power supply, a computer, or a mobile phone.
The power receiving apparatus may include: a computer, a mobile terminal or a wearable watch, etc.
For example, the attribute information of the transmission line may be stored in the identification chip according to the user's demand. A user may be connected to the transmission line through a reading device to read or set the attribute information of the transmission line stored in the identification chip. Here, the attribute information may include: type of transmission line, power, voltage rating, current rating, production time or manufacturer, etc. Therefore, the transmission line can be maintained more flexibly and conveniently.
In some embodiments, as shown with reference to fig. 6, the second interface 320 includes:
an interface housing 321; and
a third data pin 3211 and a fourth data pin 3212 for transmitting data, a power receiving pin 3213 for connecting a power source, and a communication pin 3214 for receiving a charging mode identification result output by the identification chip, which are disposed in the interface housing 321; wherein the content of the first and second substances,
the third data pin 3211 is connected to a first data output pin of the identification chip, the fourth data pin 3212 is connected to a second data output pin of the identification chip, the power receiving pin 3213 is connected to a charging pin of the identification chip, and the communication pin 3214 is connected to a result output pin of the identification chip.
After the communication pin 3214 transmits the charging mode identification result to the powered device, the communication pin 3214 may receive a charging negotiation signal sent by the powered device. Here, the charge negotiation signal may include: the powered device identifies the requested charging mode based on the charging mode. It is understood that the charging mode requested by the powered device is a mode in which the transmission line allows the charging device to charge.
For example, when it is determined to charge in the energy transfer PD fast charge mode, the charge negotiation signal transmitted by the powered device is used to request the charger to charge in the energy transfer PD fast charge mode. When it is determined to charge in the QC fast charge mode, the charge negotiation signal transmitted by the powered device is used to request the charger to charge in the QC fast charge mode. When it is determined to perform charging in the second type charging mode, the charging negotiation signal transmitted by the powered device is used to request the charger to charge in the second type charging mode.
When the identification chip receives the charge negotiation signal, the charge negotiation signal may be sent to the charger, so that the charger charges in the charge mode requested by the powered device based on the charge negotiation signal.
Fig. 7 is a block diagram illustrating a charger 400 according to an exemplary embodiment. Referring to fig. 7, the charger 400 includes:
a charger housing 410; and
a fifth data pin 4211 and a sixth data pin 4212 provided in the charger housing 410 for transmitting data, a power supply pin 4213 for outputting a power supply current, and a determination pin 4214 for outputting a charging mode supported by the charger;
the identification module 430 for performing the charging mode identification is connected to the fifth data pin 4211, the sixth data pin 4212 and the determination pin 4214.
For example, when the charger is connected to the powered device through the transmission line, the charger 400 may receive the identification verification information sent by the transmission line, and generate an identification verification result based on the identification verification information by using the identification module 430.
When the identification verification result shows that the verification is successful, sending reply information back to the transmission line; the reply information is used for triggering the transmission line to identify the charging mode of the charger. When the identification verification result indicates that the verification fails, the charger does not send the reply information back to the transmission line.
For example, when the identification verification result indicates that the verification fails, the charger cannot charge the power receiving device through the transmission line, or the charger charges the power receiving device in the second charging mode. When the charger is an electronic device with data transmission capability and the identification verification result indicates that the verification fails, the charger may further communicate with the powered device through the transmission line.
Compared with the scheme that the charger does not need to be subjected to identity verification during charging and the electric energy is directly transmitted in the charging mode supported by the charger, the charger disclosed by the embodiment of the disclosure realizes identity verification and charging mode identification between the charger and the transmission line through the identification module of the charger and the identification chip of the transmission line before transmitting the electric energy to the powered device through the transmission line so as to select the corresponding charging mode for charging, and the safety of the charging process is improved.
In some embodiments, the identification module 430 is configured to perform charging mode identification based on data received by the fifth data pin 4211 and the sixth data pin 4212, and send the charging mode supported by the charger 400 to the powered device through the determination pin 4214.
The charger may transmit the charging parameter to the transmission line based on request information transmitted by the transmission line to read the charging parameter of the charger when receiving the request information. Here, the charging parameter is used to indicate a charging mode supported by the charger.
In some embodiments, the charger 400, electrically connected to the powered device through the transmission line 300 as provided by embodiments of the present disclosure; wherein the first interface 310 of the transmission line 300 comprises the interface 200 as provided by the embodiments of the present disclosure;
the fifth data pin 4211 is connected to a first data pin of the first interface 310, the sixth data pin 4212 is connected to a second data pin of the first interface 310, the power supply pin 4213 is connected to a power supply pin of the first interface 310, and the determination pin 4214 is connected to a mode identification pin of the first interface 310.
When the charging mode supported by the charger includes an energy transfer PD fast charging mode, the charger may provide a first bias voltage signal to a mode identification pin of a first interface in the transmission line through the determination pin 4214, and transmit the first bias voltage signal to the powered device through the identification pin 1106 of the identification chip, the result output pin 1107 and the communication pin 3214 of the second interface of the transmission line in sequence, so that the powered device knows that the charging mode supported by the charging device includes the energy transfer PD fast charging mode.
When the charging mode supported by the charger includes the QC fast charging mode, the charger may provide a second bias signal to the mode identification pin of the first interface in the transmission line through the determination pin 4214, and sequentially pass through the identification pin 1106 of the identification chip, the result output pin 1107, and the communication pin 3214 of the second interface of the transmission line, and transmit the second bias voltage signal to the powered device, so that the powered device knows that the charging mode supported by the charging device includes the QC fast charging mode.
When the charging mode supported by the charger does not include the first type of charging mode and includes the second type of charging mode, the charger may provide a third bias signal to the mode identification pin of the first interface in the transmission line through the determination pin 4214, and transmit the third bias voltage signal to the powered device through the identification pin 1106 of the identification chip, the result output pin 1107 and the communication pin 3214 of the second interface of the transmission line in sequence, so that the powered device knows that the charging mode supported by the charging device includes the QC fast charging mode.
It should be noted that the first bias signal, the second bias signal, and the third bias signal may all be voltage signals, and a voltage value of the first bias signal, a voltage value of the second bias signal, and a voltage value of the third bias signal are different. The powered device may determine the charging mode supported by the charging device according to a signal value of the voltage signal transmitted by the communication pin.
Fig. 8 is an illustration of a charging system 500, in accordance with an exemplary embodiment. Referring to fig. 8, the charging system 500 includes:
a transmission line 300 as provided by embodiments of the present disclosure;
the charger 400, as provided by the embodiments of the present disclosure, is electrically connected to the powered device 501 through the transmission line 300.
Through the charging system provided by the embodiment of the disclosure, when the transmission line provided with the identification chip is electrically connected with the charger, the identification verification is performed on the charger through the identification chip, the charging mode supported by the charger is identified, and the identification matching verification of the identification chip and the charger is performed, and the on/off of the first switch, the second switch, the third switch and the fourth switch in the identification chip is controlled, so that the powered device is charged by adopting the first charging mode or the second charging mode, the identification accuracy between the transmission line provided with the identification chip and the charger is improved, and the safety of the charging process is favorably improved.
Fig. 9 is a flowchart illustrating a charging method according to an exemplary embodiment, which is applied to the transmission line 300 provided in the embodiments of the present disclosure. Referring to fig. 9, the method includes the steps of:
s100: when the transmission line is connected with the charger, identity identification verification information is sent to the charger;
s110: according to the reply condition of the charger to the identity identification verification information, controlling the disconnection or the connection of a switch between pins in an identification chip in the transmission line so as to charge by adopting a first charging mode or a second charging mode; wherein the charging rate of the second type of charging mode is lower than the charging rate of the first type of charging mode.
In S100, the identification verification information may include: data capable of performing identification verification on the charging device. For example, it may be randomly coded.
For example, in S110, the reply to the identification verification information by the charger may include: the charger does not reply the identification verification information or the charger replies the identification verification information. Here, when the charger does not reply the identification verification information, the charger may be considered as not matching the transmission line; when the charger replies the identification verification information, the charger can be considered to be matched with the transmission line.
For example, in S110, the replying of the identification verification information by the charger may further include: the reply information of the charger to the identification verification information is wrong or the reply information of the charger to the identification verification information is correct. Here, when the reply message of the charger to the identification verification message is wrong, the charger can be considered to be not matched with the transmission line; when the reply information of the charger to the identification verification information is correct, the charger can be considered to be matched with the transmission line.
It is understood that the transmission line may have preset reply information stored therein. When the reply information of the charger is different from the preset reply information, the reply information of the charger to the identity recognition verification information can be considered as wrong; when the reply information of the charger is the same as the preset reply information, the charger can be considered to have correct reply information of the identity identification verification information.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure performs the authentication on the charger through the identification chip in the transmission line before transmitting the electric energy to the powered device through the transmission line so as to select the corresponding charging mode for charging, thereby improving the safety of the charging process.
In some embodiments, S110 may include:
when the reply information of the charger to the identity identification verification information is not received within the set time, controlling a first switch between a first data input pin and a first data output pin, a second switch between a second data input pin and a second data output pin and a third switch between a charging pin and a result output pin in the identification chip to be closed so as to charge in a second type charging mode;
when receiving reply information of the charger to the identity identification verification information, controlling a fourth switch between an identification pin and a result output pin of the identification chip to be closed, and sending request information for reading charging parameters of the charger; and controlling the state of the third switch according to the charging mode supported by the charger determined based on the charging parameter returned by the request information so as to adopt the first-type charging mode or the second-type charging mode for charging.
In some embodiments, the controlling the state of the third switch according to the charging mode supported by the charger determined based on the charging parameter returned by the request message to perform charging in the first-type charging mode or the second-type charging mode includes:
when the charging parameters indicate that the charging modes supported by the charger comprise an energy transfer PD quick charging mode, controlling the third switch to be switched off so as to charge in the energy transfer PD quick charging mode; wherein the first type of charging mode comprises an energy transfer PD fast charging mode;
when the charging parameters indicate that the charging mode supported by the charger does not include an energy transfer PD quick charging mode, controlling a third switch to be closed so as to charge by adopting a first type of charging mode or a second type of charging mode; wherein the second type of charging mode does not include the energy transfer PD fast charging mode.
In some embodiments, after the determining the charging mode supported by the charger according to the charging parameter returned based on the request information and controlling the state of the third switch, the method further includes:
sending a matching request to the charger through the first data input pin and the second data input pin;
receiving first identity matching verification information returned by the charger based on the matching request;
encrypting the first identity matching verification information according to the set key to obtain encrypted information;
sending the encrypted information to the charger;
and determining to adopt the first type charging mode or the second type charging mode for charging according to the reply condition based on the encrypted information.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication of the charger and the identification of the charging mode through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and performs encryption authentication on the charger again after the charging mode is confirmed, and determines to select the corresponding charging mode for charging according to the reply status based on the encryption information, thereby further improving the safety of the charging process.
Illustratively, the reply status based on the encryption information may include: and receiving a reply result of the charger to the encrypted information within a preset time, or not receiving the reply result of the charger to the encrypted information within the preset time.
And when a reply result of the charger to the encrypted information is received within the preset time, the charger is indicated to be successfully verified based on the encrypted information. At this time, charging is performed in the first type charging mode supported by the charger.
And when the reply result of the charger to the encrypted information is not received within the preset time, the charger fails to verify based on the encrypted information. At this time, charging is performed in the second type charging mode.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication of the charger and the identification of the charging mode through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and performs encryption authentication on the charger again after the charging mode is confirmed, and determines to select the corresponding charging mode for charging according to the reply status based on the encryption information, thereby further improving the safety of the charging process.
Illustratively, the determining to charge in the first charging mode or the second charging mode according to the reply status based on the encrypted information includes:
receiving a control signal returned by the charger to the encrypted information through a first data pin and a second data pin of a first interface in the transmission line; wherein, the control signal is: a first type of signal transmitted when the charger is successfully verified based on the encrypted information; or a second type of signal sent when the charger fails to verify based on the encrypted information;
when a first type signal is received, determining to adopt a first type charging mode supported by a charger for charging; and when the second type of signals are received, determining to adopt a second type of charging mode for charging.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication of the charger and the identification of the charging mode through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and performs encryption authentication on the charger again after the charging mode is confirmed, and determines to select the corresponding charging mode for charging according to the reply status based on the encryption information, thereby further improving the safety of the charging process.
In some embodiments, the method further comprises:
controlling a charging current for charging in a second type of charging mode based on the current source in the identification chip; wherein the current source is located between the charging pin and the third switch.
For example, the magnitude of the charging current of the second type of charging mode may be equal to the current value provided by the identification on-chip current source. Therefore, the charging current of the second type charging mode can be changed by changing the current value provided by the current source, thereby limiting the output power of the charger connected with the powered device through the transmission line provided with the identification chip.
In the embodiment of the disclosure, the charging current charged in the second type of charging mode is controlled by identifying the current source in the chip, and the method is simple.
Fig. 10 is a flow chart illustrating a charging method applied to a charger according to an exemplary embodiment. Referring to fig. 10, the method includes the steps of:
s200: when the charger is connected with the powered device through the transmission line, receiving identity identification verification information sent by the transmission line;
s210: generating an identification verification result based on the identification verification information;
s220: when the identification verification result shows that the verification is successful, sending reply information back to the transmission line; the reply information is used for triggering the transmission line to identify a charging mode of the charger, the charging mode comprises a first charging mode and a second charging mode, and the charging rate of the second charging mode is lower than that of the first charging mode;
s230: charging the power receiving apparatus with the transmission line based on the recognition result of the charging pattern recognition.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure performs authentication on the charger through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and triggers the transmission line to perform charging mode identification on the charger when the authentication result shows that the authentication is successful, so as to select the corresponding charging mode for charging, and determines the charging mode through the result of multiple authentication processes between the transmission line and the charger before charging, thereby improving the safety of the charging process.
Illustratively, the method further comprises:
and when the identification verification result indicates that the verification fails, charging the powered device by using the transmission line in a second charging mode.
In some embodiments, the method further comprises:
after sending the reply information back to the transmission line, receiving request information sent by the transmission line for reading the charging parameters of the charger;
transmitting the charging parameters to the transmission line based on the request information; the charging parameter is used for indicating a charging mode supported by the charger.
In some embodiments, the recognition result comprises: the charger supported charging mode comprises a first result of the energy transfer PD fast charging mode, or the charger supported charging mode does not comprise a second result of the energy transfer PD fast charging mode;
s230 may include:
charging the powered device with the transmission line in an energy transfer PD fast charge mode according to the first result;
alternatively, the first and second electrodes may be,
and charging the power receiving equipment by using the transmission line in a first charging mode or a second charging mode supported by the charger according to the second result.
In some embodiments, the method further comprises:
after the charging parameters are sent to the transmission line, receiving a matching request sent by the transmission line;
based on the matching request, sending first identity matching verification information to the transmission line;
receiving encrypted information sent by a transmission line;
decrypting the encrypted information to obtain second identity matching verification information;
comparing the first identity matching verification information with the second identity matching verification information to obtain a matching verification result;
and when the matching verification result shows that the matching verification is successful, sending a reply result of the encrypted information to the transmission line, and determining that the power receiving equipment is charged by the transmission line in a first charging mode supported by the charger.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication of the charger and the identification of the charging mode through the identification chip in the transmission line before the electric energy is transmitted to the power receiving equipment through the transmission line, and performs encryption authentication on the charger again after the charging mode is confirmed, and sends the reply result of the encrypted information to the transmission line when the matching authentication result shows that the matching authentication is successful, and determines to select the corresponding charging mode for charging, thereby further improving the safety of the charging process.
In some embodiments, the method further comprises:
and when the matching verification result shows that the matching verification fails, determining to charge the power receiving equipment by using the transmission line in the second charging mode.
In some embodiments, the sending a reply result to the encrypted information to the transmission line when the matching verification result indicates that the matching verification is successful, and determining that the powered device is charged by using the transmission line in a first charging mode supported by the charger includes:
when the matching verification result shows that the matching verification is successful, a first type of signal is sent to a first data pin and a second data pin of a first interface in a transmission line; the first type of signal is used for determining that the power receiving equipment is charged by a transmission line in a first type of charging mode supported by a charger;
when the matching verification result indicates that the matching verification fails, determining to charge the power receiving device by using the transmission line in the second charging mode, including:
when the matching verification result is that the matching verification fails, sending a second type of signal to a first data pin and a second data pin of a first interface in the transmission line; and the second type of signal is used for determining that the power receiving equipment is charged by the transmission line in the second type of charging mode.
Compared with the scheme that the electric energy is directly transmitted in the charging mode supported by the charger without authentication with the charger during charging, the embodiment of the disclosure realizes the authentication of the charger and the identification of the charging mode through the identification chip in the transmission line before the electric energy is transmitted to the powered device through the transmission line, and performs encryption authentication on the charger again after the charging mode is confirmed, and determines to select the corresponding charging mode for charging according to the reply status based on the encryption information, thereby further improving the safety of the charging process.
Example 1
Before the transmission line 300 provided with the identification chip 100 is electrically connected to the charger, the first switch 1111, the second switch 1112, the third switch 1113 and the fourth switch 1114 are all turned off.
When the first interface 310 of the transmission line 300 is electrically connected to the charger and the second interface 320 of the transmission line 300 is electrically connected to the powered device, the charger outputs a voltage signal (e.g., a voltage signal of 5 volts) to the charging pin 1105 to power on the identification chip 100. At this time, the first data input pin 1101 and the second data input pin 1103 of the identification chip generate a voltage (e.g., a voltage of 3.3 volts), and the first data input pin 1101 and the second data input pin 1103 operate in the I2C communication mode. The identification chip 100 may perform I2C communication verification with the charger according to the I2C communication protocol.
Specifically, the identification chip 100 sends identification verification information to the charger through the first data input pin 1101 and the second data input pin 1103 for identification verification. Here, the identification verification information may include: information that can carry out identification verification to charging equipment. For example, information for acquiring the model of the charger, or information for acquiring the supplier of the charger.
The identification chip 100 can control the first switch 1111, the second switch 1112, the third switch 1113 and the fourth switch 1114 of the identification chip 100 to be opened or closed according to the reply of the charger to the identification verification information.
Specifically, when the reply information of the identification verification information from the charger is not received within the set time, the processing module 1200 controls the first switch 1111, the second switch 1112, and the third switch 1113 to be closed, and keeps the fourth switch 1114 open, so as to perform charging in the second type of charging mode.
The reason why the reply message of the charger to the identification verification message is not received within the set time may include: the communication protocol supported by the charger is different from the communication protocol supported by the identification chip, or the charging mode supported by the charger does not include the first type of charging mode. When the reply information of the charger to the identification verification information is received within the set time, the charger can be considered to be not matched with the transmission line provided with the identification chip.
For example, the set time may include a plurality of time periods, and the identification chip transmits the identification verification information to the charger once in each time period.
For example, the set time may include 20 time periods. In the nth time period, when the identification chip sends the identification verification information to the charger and does not receive the reply of the charger in the nth time period, the identification chip can send the identification verification information to the charger again in the (n + 1) th time period, wherein n is an integer which is greater than or equal to 1 and less than or equal to 19. When n is less than or equal to 19, the identification chip repeats the process of sending identification verification information to the charger and waiting for the charger to reply until the identification chip receives the reply information of the charger, or until n is equal to 19. Therefore, the accuracy of the identification chip for identifying and verifying the identity of the charger can be improved.
When receiving the reply information of the charger to the identification verification information, the processing module 1200 in the identification chip 100 controls the fourth switch 1114 to be closed, and identifies the charging mode supported by the charger.
Specifically, when the identification chip 100 identifies the charging mode supported by the charger, the identification chip 100 may perform request information for reading the charging parameter of the charger to the charger through the first data input pin 1101 and the second data input pin 1103, and control the state of the third switch 1113 according to the charging mode supported by the charger determined based on the charging parameter returned by the request information. Here, the charging parameters may include: indicating charging mode data supported by the charger, such as charging output power, charging current, charging voltage, etc.
When the charging parameter indicates that the charging mode supported by the charger is the energy transfer PD fast charging mode, keeping the third switch 1113 off; when the charging parameter indicates that the charging mode supported by the charger is the QC fast charging mode or the charging parameter indicates that the charging mode supported by the charger does not include the fast charging mode, the third switch 1113 is controlled to close.
After the identification chip 100 determines the charging mode supported by the charger, the identification chip 100 also performs identity matching verification with the charger.
Specifically, after the identification chip 100 determines the charging mode supported by the charger, the identification chip 100 may send a matching request to the charger through the first data input pin 1101 and the second data input pin 1103, then receive first identity matching verification information returned by the charger based on the matching request, encrypt the first identity matching verification information by a hash algorithm according to a set key to obtain encrypted information, send the encrypted information to the charger, and control the states of the first switch 1111, the second switch 1112, or the third switch 1113 according to a reply status of the charger based on the encrypted information to determine to perform charging in the first-type charging mode or the second-type charging mode.
And when a reply result of the charger to the encrypted information is received within a preset time, determining that charging is carried out in a first type of charging mode supported by the charger. For example, when the charger supports the energy transfer PD fast charging mode, the identification chip controls the first switch 1111, the second switch 1112, and the fourth switch 1114 to be closed, and determines to perform charging in the energy transfer PD fast charging mode. When the charger supports the QC fast charge mode, the identification chip controls the first switch 1111, the second switch 1112, and the fourth switch 1114 to be closed, determining to charge in the QC fast charge mode.
When the reply result of the charger to the encrypted information is not received within the preset time, the first switch 111 and the second switch 1112 are controlled to be closed, and charging in the second type charging mode is determined.
After the charging mode for charging is determined, the communication pin 3214 of the transmission line second interface may transmit the charging mode identification result to the powered device, and the communication pin 3214 may further receive a charging negotiation signal sent by the powered device. Here, the charge negotiation signal may include: the powered device identifies the requested charging mode based on the charging mode. It is understood that the charging mode requested by the powered device is a mode in which the transmission line allows the charging device to charge.
For example, when it is determined to charge in the energy transfer PD fast charge mode, the charge negotiation signal transmitted by the powered device is used to request the charger to charge in the energy transfer PD fast charge mode. When it is determined to charge in the QC fast charge mode, the charge negotiation signal transmitted by the powered device is used to request the charger to charge in the QC fast charge mode. When it is determined to perform charging in the second type charging mode, the charging negotiation signal transmitted by the powered device is used to request the charger to charge in the second type charging mode.
In this example, when the identification chip is electrically connected to the charger, the identification chip performs identification verification on the charger, identification of a charging mode supported by the charger, and identification matching verification between the identification chip and the charger, controls the first switch, the second switch, the third switch, and the fourth switch in the identification chip to be turned on or off, and determines to allow the charger to charge the powered device in the first charging mode or the second charging mode, so that the identification accuracy between the transmission line provided with the identification chip and the charger is improved, and the improvement of the safety of the charging process is facilitated.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (14)
1. An identification chip, comprising:
a pin, comprising: the charging device comprises a first data input pin, a first data output pin, a second data input pin and a second data output pin which are used for data transmission, a charging pin used for outputting charging voltage, an identification pin used for identifying a charging mode and a result output pin used for outputting a charging mode identification result;
and the processing module controls the switch between the pins to be opened or closed according to the confirmed charging mode.
2. The identification chip of claim 1,
the switch includes: a first switch between the first data input pin and the first data output pin, a second switch between the second data input pin and the second data output pin, and a third switch between the charging pin and the result output pin;
the processing module comprises: a first input, a second input, and a plurality of outputs;
the first input end is connected with the first data input pin;
the second input end is connected with the second data input pin;
the output ends are respectively connected with the control ends of the first switch, the second switch and the third switch and used for controlling the opening or closing of the first switch, the second switch and the third switch.
3. The identification chip of claim 2,
the switch further comprises: a fourth switch between the identification pin and the result output pin, a control end of the fourth switch being connected to one of the plurality of output ends of the processing module;
the processing module is further used for controlling the fourth switch to be opened or closed.
4. The identification chip of claim 2, wherein the identification chip further comprises:
a current source located between the charging pin and the third switch.
5. An interface, comprising:
a housing; and
the charging device comprises a first data pin and a second data pin which are arranged on the shell and used for transmitting data, a power supply pin used for connecting a power supply and a mode identification pin used for identifying a charging mode; wherein the content of the first and second substances,
the first data pin is connected with a first data input pin of the identification chip according to any one of claims 1 to 4, the second data pin is connected with a second data input pin of the identification chip, the power supply pin is connected with a charging pin of the identification chip, and the mode identification pin is connected with an identification pin of the identification chip.
6. The interface according to claim 5,
the first data pin, the second data pin and the power supply pin are all flush with the edge of the shell;
the pattern recognition pin has a predetermined distance from an edge of the housing.
7. The interface according to claim 6,
the interface is an A-type universal serial bus interface.
8. A transmission line, comprising: a first interface, a second interface, a transmission line body connecting the first interface and the second interface, and the identification chip of any one of claims 1 to 4;
the identification chip is arranged in the first interface, the second interface or the transmission line main body;
the first interface is connected with a first data input pin, a second data input pin, a charging pin and an identification pin of the identification chip, and the first interface is used for connecting a charger;
the second interface is connected with the first data output pin, the second data output pin, the charging pin and the result output pin of the identification chip, and the second interface is used for connecting a powered device.
9. The transmission line according to claim 8,
the first interface includes: the interface of any one of claims 5 to 7;
the second interface includes: a type C universal serial bus interface.
10. The transmission line according to claim 9, characterized in that said second interface comprises:
an interface housing; and
the third data pin and the fourth data pin are arranged in the interface shell and used for transmitting data, the power receiving pin is used for being connected with a power supply, and the communication pin is used for receiving a charging mode identification result output by the identification chip; wherein the content of the first and second substances,
the third data pin is connected with a first data output pin of the identification chip, the fourth data pin is connected with a second data output pin of the identification chip, the power receiving pin is connected with a charging pin of the identification chip, and the communication pin is connected with a result output pin of the identification chip.
11. A charger, comprising:
a charger housing; and
a fifth data pin and a sixth data pin which are arranged in the charger shell and used for transmitting data, a power supply pin used for outputting power supply current, and a determination pin used for outputting a charging mode supported by a charger;
and the identification module is used for identifying the charging mode and is connected with the fifth data pin, the sixth data pin and the determination pin.
12. The charger of claim 11,
the identification module is configured to perform charging mode identification based on data received by the fifth data pin and the sixth data pin, and send the charging mode supported by the charger to a powered device through the determination pin.
13. The charger of claim 11,
the charger electrically connecting a power receiving device through the transmission line according to any one of claims 8 to 10; wherein the first interface of the transmission line comprises an interface as claimed in any one of claims 5 to 7;
the fifth data pin is connected with a first data pin of the first interface, the sixth data pin is connected with a second data pin of the first interface, the power supply pin is connected with a power supply pin of the first interface, and the determination pin is connected with a mode identification pin of the first interface.
14. An electrical charging system, comprising:
the transmission line of any one of claims 8 to 10;
a charger according to any of claims 11 to 13, electrically connected to a powered device via said transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016711.9U CN211456730U (en) | 2020-01-03 | 2020-01-03 | Identification chip, interface, transmission line, charger and charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016711.9U CN211456730U (en) | 2020-01-03 | 2020-01-03 | Identification chip, interface, transmission line, charger and charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211456730U true CN211456730U (en) | 2020-09-08 |
Family
ID=72297771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020016711.9U Active CN211456730U (en) | 2020-01-03 | 2020-01-03 | Identification chip, interface, transmission line, charger and charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211456730U (en) |
-
2020
- 2020-01-03 CN CN202020016711.9U patent/CN211456730U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102656498B1 (en) | Power feeding system and power feed control method | |
| US10740495B2 (en) | Host/battery with public/private busses, public memory, processor, and private memory | |
| CN106537719B (en) | Electronic device, charger, charging system and charging method | |
| US8424092B2 (en) | Electronic apparatus for authenticating a battery pack | |
| EP1068753B1 (en) | Communication method and apparatus | |
| CN105762863B (en) | A kind of charging method and charging unit | |
| TW200931738A (en) | Smart cables | |
| JP2009015744A (en) | Authentication system and authenticating apparatus | |
| CN101410848A (en) | Communication protocol for device authentication | |
| CN106911476A (en) | A kind of ciphering and deciphering device and method | |
| CN105631298B (en) | A kind of ciphering and deciphering device and method | |
| CN104867004A (en) | Mobile payment system and mobile payment method thereof | |
| CN113078695A (en) | Identification chip, interface, transmission line, charger, charging system and charging method | |
| JPWO2006049090A1 (en) | Integrated circuit and integrated circuit package | |
| CN211456730U (en) | Identification chip, interface, transmission line, charger and charging system | |
| CN116522983B (en) | Electronic tag chip and charging cable | |
| EP4060537A1 (en) | A method and system for securely provisioning electronic devices | |
| CN112235100B (en) | Electric energy meter soft encryption authentication method and remote authentication system thereof | |
| EP4002792A1 (en) | An apparatus and method for provisioning electronic devices | |
| EP4002790A1 (en) | A provisioning method and system | |
| CN116811610A (en) | Quick charging method for new energy automobile by coupling type charging pile | |
| CN116721494A (en) | Authentication method for battery accessory of intelligent door lock and intelligent door lock | |
| CN112333656A (en) | Gas meter data transmission method and gas meter | |
| CN112508555A (en) | Method and device for recharging gas card by using Bluetooth card reader | |
| CN112072804A (en) | Wireless charging remote control method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210824 Address after: No.018, 8th floor, building 6, No.33 yard, middle Xierqi Road, Haidian District, Beijing 100085 Patentee after: BEIJING XIAOMI MOBILE SOFTWARE Co.,Ltd. Patentee after: Hanxin Microelectronics (Wuxi) Co., Ltd Address before: No.018, 8th floor, building 6, No.33 yard, middle Xierqi Road, Haidian District, Beijing 100085 Patentee before: BEIJING XIAOMI MOBILE SOFTWARE Co.,Ltd. Patentee before: Hanxin Microelectronics (Shanghai) Co.,Ltd. |