CN113937831A

CN113937831A - Data line subassembly, charger, battery charging outfit

Info

Publication number: CN113937831A
Application number: CN202010605184.XA
Authority: CN
Inventors: 魏静波
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-01-14

Abstract

The utility model provides a data line subassembly, mobile device plug and charger plug including data line and data line both ends are provided with mated first contact that charges on the mobile device plug, are provided with mated second contact that charges on the charger plug, and first contact and the second contact electricity that charges are connected. The data line assembly further comprises at least one voltage feedback line and at least one feedback contact, the feedback contact is arranged on the charger plug, one end of the voltage feedback line is electrically connected with the first charging contact, and the other end of the voltage feedback line is electrically connected with the feedback contact. In the disclosure, when the charger plug is inserted into the charger, the charger plug can feed back the voltage value of the using end to the charger through the feedback contact, and then allow the charger to adjust parameters such as the output voltage of the charger according to the voltage value fed back by the feedback contact, so that the voltage value of the using end is kept in an ideal voltage range under various charging current conditions. The present disclosure also provides a charger and a charging device.

Description

Data line subassembly, charger, battery charging outfit

Technical Field

The present disclosure relates to the field of mobile terminal devices, and in particular, to a data line assembly, a charger, and a charging device.

Background

With the development of intelligent terminal technology, the processing capacity and the download rate of mobile devices such as mobile phones and tablets are stronger and stronger, the power consumption of the mobile devices is larger and larger, the capacity of a battery in the mobile device (portable device) is also developed to thousands of mAh at present from hundreds of mAh at present, meanwhile, higher requirements are also put forward in the industry for the charging rate of the mobile device, and the charging current of the mobile device is developed to a few amperes (A) at present from hundreds of milliamperes (mA) at present, so that the power consumption requirements of the mobile device in the current market are met.

However, compared with the past low-current charging device, the high-current charging device has the problem that the output power of the charging device cannot meet the standard requirement under different charging current, and the service life of the battery of the mobile device and the safety of the charging process of the device are adversely affected.

Therefore, how to provide a charging device capable of outputting standard power under various current levels becomes a technical problem to be solved in the field.

Disclosure of Invention

The present disclosure is directed to a data line assembly, a charger, and a charging device, in which the data line assembly can feed back an actual voltage value of a use terminal to the charger when a mobile device is charged, so that the charger adjusts parameters such as an output voltage according to the fed-back actual voltage value, thereby outputting a standard power at various current levels.

In order to achieve the above object, as one aspect of the present disclosure, there is provided a data line assembly, the data line assembly including a data line, and a mobile device plug and a charger plug respectively disposed at both ends of the data line, the mobile device plug being provided with a pair of first charging contacts, the charger plug being provided with a pair of second charging contacts, the first charging contacts and the second charging contacts being electrically connected in one-to-one correspondence through the data line, the data line assembly further including at least one voltage feedback line and at least one feedback contact,

the feedback contact is arranged on the charger plug, one end of the voltage feedback line is electrically connected with the first charging contact, and the other end of the voltage feedback line is electrically connected with the feedback contact.

Optionally, the first charging contact disposed in pair comprises a first power supply bus VBUS contact and a first ground GND contact, and the second charging contact disposed in pair comprises a second VBUS contact and a second GND contact, the first VBUS contact being electrically connected to the second VBUS contact, and the first GND contact being electrically connected to the second GND contact.

Optionally, the voltage feedback line comprises a VBUS feedback line, the feedback contact comprises a VBUS feedback contact, and one end of the VBUS feedback line is electrically connected to the first VBUS contact, and the other end is electrically connected to the VBUS feedback contact.

Optionally, the feedback contact includes a VBUS feedback contact, and the VBUS feedback contact and the second VBUS contact are spaced apart from each other along a direction in which the charger plug is inserted into a charger.

Optionally, the voltage feedback line comprises a GND feedback line, the feedback contact comprises a GND feedback contact, one end of the GND feedback line is electrically connected with the first GND contact, and the other end of the GND feedback line is electrically connected with the GND feedback contact.

Optionally, the feedback contact comprises a GND feedback contact, and the GND feedback contact and the second GND contact are arranged at intervals along the direction in which the charger plug is inserted into the charger.

Optionally, the mobile device plug is further provided with a first data sending D + contact and a first data receiving D-contact, the charger plug is further provided with a second D + contact and a second D-contact,

the first D + contact is electrically connected with the second D + contact, and the first D-contact is electrically connected with the second D-contact.

As a second aspect of the present disclosure, a charger is provided, which includes a power supply circuit and a data line socket, wherein a pair of third charging contacts is disposed on the data line socket, the power supply circuit is configured to provide a first potential signal and a second potential signal to two contacts of each pair of the third charging contacts, respectively, and the data line socket further includes at least one receiving contact, and the receiving contact is capable of contacting with at least one feedback contact on the data line assembly in a one-to-one correspondence manner when a charger plug of the data line assembly is inserted into the data line socket.

Optionally, the first charging contacts disposed in pairs include a first power supply bus VBUS contact and a first ground GND contact, the second charging contacts disposed in pairs include a second VBUS contact and a second GND contact, the first VBUS contact is electrically connected to the second VBUS contact, the first GND contact is electrically connected to the second GND contact, the third charging contacts disposed in pairs include a third VBUS contact and a third GND contact, and the second VBUS contact is in contact with the third VBUS contact when the charger plug is inserted into the data line socket, the second GND contact is in contact with the third GND contact;

the feedback contacts include VBUS feedback contacts, the receiving contacts include VBUS receiving contacts capable of contacting the VBUS feedback contacts when the charger plug is inserted into the data line receptacle; and/or

The feedback contact includes a GND feedback contact, and the receiving contact includes a GND receiving contact capable of contacting the GND feedback contact when the charger plug is inserted into the data line socket.

Optionally, the receiving contact includes a VBUS receiving contact, and the third VBUS contact is spaced from the VBUS receiving contact along a direction in which the charger plug is inserted into a charger.

Optionally, the receiving contact includes a GND receiving contact, and the third GND contact and the GND receiving contact are provided at an interval in a direction in which the charger plug is inserted into a charger.

Optionally, the data line socket is further provided with a third D + contact and a third D-contact, when the charger plug of the data line assembly is inserted into the data line socket, the second D + contact on the charger plug contacts with the third D + contact on the data line socket, and the second D-contact on the charger plug contacts with the third D-contact on the data line socket.

As a third aspect of the present disclosure, a charging device is provided, including a data line component and a charger, where two ends of the data line component are respectively used to connect with a mobile device and the charger, and the charger is used to provide electric energy to the mobile device through the data line component, where the data line component is the foregoing data line component, and the charger is the foregoing charger.

In the disclosure, the data line assembly further includes a voltage feedback line and a feedback contact arranged on the charger plug, the data line socket of the charger has a receiving contact, the feedback contact is electrically connected with the first charging contact arranged on the mobile device plug through the voltage feedback line, so that when the charger plug is inserted into the charger, the charger plug can feed back an actual voltage value of a using end to the charger through the feedback contact, the charger adjusts parameters such as output voltage of the charger according to the fed-back actual voltage value, so as to implement corresponding voltage drop compensation on different charging current conditions, and keep the actual voltage value of the using end within an ideal voltage range under various charging current conditions.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic diagram of a charging method for a mobile device according to the prior art;

FIG. 2 is a schematic diagram of another charging method for a mobile device in the prior art;

FIG. 3 is a schematic diagram illustrating the alignment relationship between contacts of a data line and a charger in the prior art;

FIG. 4 is a schematic diagram illustrating the alignment relationship between the data lines and the contacts of the charger in the charging mode shown in FIG. 1;

FIG. 5 is a schematic diagram illustrating the alignment relationship between the data lines and the contacts of the charger in the charging mode shown in FIG. 2;

fig. 6 is a schematic diagram illustrating the alignment relationship between the data line assembly and the charger.

Description of the reference numerals

100: mobile device plug 110: first VBUS contact

120: first GND contact 130: first D-contact

140: first D + contact 200: charger plug

210: second VBUS contact 220: second GND contact

230: second D-contact 240: second D + contact

211: VBUS feedback contact 212: VBUS feedback line

221: GND feedback contact 222: GND feedback line

300: the data line socket 310: third VBUS contact

320: third GND contact 330: third D-contact

340: third D + contact 311: VBUS receiving contact

321: GND receiving contact

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 and fig. 2, the mobile device is connected to a charger (charging adapter) through a Detachable Cable (i.e., a data line), and the charger outputs electric energy to the mobile device at a standard voltage and current (e.g., 5V, 2A or 5V, 1A, etc.) required for charging the mobile device.

Specifically, two ends of the data line are respectively formed into two plugs, and the mobile device and the charger have corresponding sockets, for example, the data line and the charger may be components supporting PE +2.0 and above protocols, as shown in fig. 1 and 4, one end of the data line for connecting with the mobile device has a micro B Plug (μ -B Plug), and the mobile device is provided with a corresponding micro B socket (μ -B receive) or a micro AB socket (μ -AB receive); or, the data line and the charger may be a component supporting QC3.0 and above protocols, as shown in fig. 2 and 5, one end of the data line, which is used for being connected with the mobile device, has a Type-C Plug (Type-C Plug), and the mobile device is provided with a corresponding Type-C socket (Type-C receive). The data line and the charger are usually connected in a Type-a manner, as shown in fig. 1 and fig. 2, one end of the data line, which is used for being connected with the charger, is provided with an Std-a Plug (Std-a Plug), and the charger is provided with a corresponding Std-a socket (Std-a Receptacle).

As shown in fig. 3, each plug and receptacle typically includes at least four contacts: the power supply bus comprises a VBUS contact, a grounding GND contact, a data sending D + contact and a data receiving D-contact, wherein the VBUS contact and the GND contact are used for forming a voltage difference to supply power to the mobile equipment, and the D + contact and the D-contact are used for carrying out data receiving and sending communication with the mobile equipment. The contacts at the two ends of the data line are respectively connected in a one-to-one correspondence manner through corresponding lines.

After extensive research, the inventors of the present disclosure found that the problem of the deviation of the charging power from the standard requirement in the related art is caused by the VBUS line and the GND line, and specifically, voltage signals on the VBUS line and the GND line need to be transmitted to the mobile terminal side through the data line, and it is ensured that the finally received voltage and current of the mobile terminal side meet the standard requirement, however, a certain resistance exists in the line for connecting contacts at two ends in the data line, and the current inevitably generates a voltage drop when flowing through the line.

According to the standard requirements of the existing charger, the deviation of the actual voltage value transmitted to the use end by the voltage output by the 5V charging adapter cannot exceed 5% in any case, namely the voltage at the connection part of the data line and the mobile equipment needs to be maintained in the range of 4.75-5.25V. However, the impedances of different charging lines are different inevitably, and the existing charger and data line usually need to support multiple charging currents (e.g. 1A, 2A) simultaneously, and in case of large current charging, the voltage drop on the charging line is too large, which results in too low voltage at the using end and reduces the charging efficiency, and in case of small current charging, the voltage at the using end is too high easily, which affects the charging safety of the mobile phone.

Therefore, the existing charging equipment is difficult to meet the specification requirements under the condition of using different impedance charging wires and under the condition of simultaneously dealing with the large-current charging requirement and the small-current charging requirement.

In order to solve the above technical problem, as an aspect of the present disclosure, there is provided a data line assembly, as shown in fig. 6, the data line assembly includes a data line and a mobile device plug 100 and a charger plug 200 respectively disposed at both ends of the data line, a pair of first charging contacts (e.g., a first VBUS contact 110 and a first GND contact 120) is disposed on the mobile device plug 100, and a pair of second charging contacts (e.g., a second VBUS contact 210 and a second GND contact 220) is disposed on the charger plug 200, and the first charging contacts and the second charging contacts are electrically connected in one-to-one correspondence through the data line.

The data line assembly further comprises at least one voltage feedback line and at least one feedback contact, the feedback contact is arranged on the charger plug 200, one end of the voltage feedback line is electrically connected with the first charging contact, and the other end of the voltage feedback line is electrically connected with the feedback contact.

In the present disclosure, the data line assembly further includes a voltage feedback line and a feedback contact disposed on the charger plug 200, and the feedback contact is electrically connected to the first charging contact disposed on the mobile device plug 100 through the voltage feedback line, so that when the charger plug 200 is plugged into the charger, the charger plug 200 can feed back an actual voltage value of the using terminal to the charger through the feedback contact, and further allow the charger to adjust parameters such as an output voltage of the charger according to the voltage value fed back by the feedback contact, so as to implement corresponding voltage drop compensation for different charging current conditions, and maintain the actual voltage value of the using terminal within an ideal voltage range (e.g., 0 to 5.25V) under various charging current conditions.

It should be noted that, in order to implement the voltage drop compensation function, the socket on the charger also needs to be adaptively added with corresponding contacts, and when the charger plug 200 is inserted into the charger, the added contacts can be contacted with the feedback contacts, so as to obtain the actual voltage value fed back through the feedback contacts. For example, a power supply circuit of the charger is further provided with a voltage detection unit corresponding to the added contact, and the voltage detection unit is used for detecting the voltage value on the added contact, so that the power supply circuit adjusts parameters such as output voltage according to the fed-back actual voltage value.

The number of the first charging contact and the second charging contact is not particularly limited in the embodiment of the present disclosure, for example, as shown in fig. 6, the first charging contact disposed in pair includes a first power supply bus VBUS contact 110 and a first ground GND contact 120, the second charging contact disposed in pair includes a second VBUS contact 210 and a second GND contact 220, the first VBUS contact 110 is electrically connected to the second VBUS contact 210, and the first GND contact 120 is electrically connected to the second GND contact 220.

In the embodiment of the present disclosure, the data line assembly may include two voltage feedback lines and two feedback contacts to simultaneously feedback the voltage values on the first VBUS contact 110 and the first GND contact 120 (i.e., the case shown in fig. 6), or the data line assembly may also include only one voltage feedback line and one feedback contact to feedback the voltage value of one of the first charging contacts, specifically:

the voltage feedback line may include a VBUS feedback line 212, and the feedback contact may include a VBUS feedback contact 211, and one end of the VBUS feedback line 212 is electrically connected to the first VBUS contact 110, and the other end is electrically connected to the VBUS feedback contact 211.

The voltage feedback line may also include a GND feedback line 222, and correspondingly, the feedback contact may also include a GND feedback contact 221, and one end of the GND feedback line 222 is electrically connected to the first GND contact 120, and the other end is electrically connected to the GND feedback contact 221.

The relative position between the feedback contact and the second charging contact is not particularly limited in the embodiment of the present disclosure, for example, to improve the compatibility of the data line assembly provided in the embodiment of the present disclosure, preferably, as shown in fig. 6, in a case that the feedback contact includes a VBUS feedback contact 211, the VBUS feedback contact 211 and the second VBUS contact 210 are spaced in a direction in which the charger plug 200 is inserted into the charger (that is, the two contacts are inserted into the charger along the same track).

It should be noted that the second VBUS contact 210 has a shorter length compared to the corresponding contact in the prior art, and the distribution area of the second VBUS contact 210 and the VBUS feedback contact 211 is equivalent to the size and shape of one VBUS contact in the prior art, so that when the data line assembly provided by the embodiment of the present disclosure is inserted into a common charger (i.e., an adaptive charger not mentioned above), the data line assembly can also serve as a common data line, and the compatibility of the data line assembly is improved.

As shown in fig. 6, in the case where the feedback contacts include the GND feedback contact 221, the GND feedback contact 221 and the second GND contact 220 are provided at intervals in the direction in which the charger plug 200 is inserted into the charger (i.e., both contacts are inserted into the charger along the same trajectory).

It should also be noted that the second GND contact 220 is shorter than the corresponding contacts in the prior art, and the distribution area of the second GND contact 220 and the GND feedback contact 221 is equivalent to the size and shape of one GND contact in the prior art, so that when the data line assembly provided by the embodiment of the present disclosure is inserted into a common charger (i.e., a non-adaptive charger as mentioned above), the data line assembly can also serve as a common data line, thereby improving the compatibility of the data line assembly.

For example, in order to implement a data transmission function of a data line assembly, as an implementation manner of the present disclosure, as shown in fig. 6, the mobile device plug 100 is further provided with a first data sending D + contact and a first data receiving D-contact, the charger plug 200 is further provided with a second D + contact 240 and a second D-contact 230, the first D + contact 140 is electrically connected to the second D + contact 240 through the data line, and the first D-contact 130 is electrically connected to the second D-contact 230 through the data line.

In the embodiment of the present disclosure, the relative position relationship between the contacts on the plug is not specifically limited, for example, for the purpose of being compatible with the contact arrangement manner of the common socket in the prior art, as an implementation manner of the present disclosure, as shown in fig. 6, on the mobile device plug 100, the first VBUS contact, the first D-contact, the first D + contact, and the first GND contact are sequentially disposed at intervals along a direction perpendicular to the direction in which the charger plug 200 is inserted into the charger; on the charger plug 200, the second VBUS contact, the second D-contact, the second D + contact, and the second GND contact are sequentially arranged at intervals in a direction perpendicular to a direction in which the charger plug 200 is inserted into a charger.

As a second aspect of the present disclosure, a charger is provided, which includes a power supply circuit and a data line socket 300, wherein the data line socket 300 is provided with a pair of third charging contacts, and the power supply circuit is configured to supply a first potential signal and a second potential signal to two contacts of each pair of the third charging contacts, respectively. The data line socket 300 further includes at least one receiving contact capable of contacting with at least one feedback contact on the data line assembly in a one-to-one correspondence when the charger plug 200 of the data line assembly provided in the embodiment of the present disclosure is inserted into the data line socket 300.

It should be noted that the pair of third charging contacts are configured to be in one-to-one contact with the pair of second charging contacts on the charger plug 200 when the charger plug 200 is inserted into the data line socket 300, so as to provide a corresponding level signal to the second charging contacts. The power supply circuit is provided with a corresponding voltage detection unit and can adjust parameters such as output voltage according to the actual voltage value of the using end fed back by the feedback contact, so that the actual voltage value of the using end is adjusted to be within a standard range.

In the present disclosure, the data line socket 300 of the charger has a receiving contact, and the charger can obtain an actual voltage value of a using end through the receiving contact when the charger plug 200 of the data line assembly is inserted into the data line socket 300, so as to adjust parameters such as an output voltage of the charger according to the fed back actual voltage value, and to implement corresponding voltage drop compensation for different charging current conditions, and keep the actual voltage value of the using end within an ideal voltage range under various charging current conditions.

The number of the third charging contacts and the corresponding number of contacts in the data line assembly are not particularly limited in the embodiment of the present disclosure, for example, as shown in fig. 6, the first charging contacts disposed in pairs include a first power supply bus VBUS contact 110 and a first ground GND contact 120, the second charging contacts disposed in pairs include a second VBUS contact 210 and a second GND contact 220, the first VBUS contact 110 is electrically connected to the second VBUS contact 210, and the first GND contact 120 is electrically connected to the second GND contact 220. The pair of the third charging contacts includes a third VBUS contact 310 and a third GND contact 320, and when the charger plug 200 is inserted into the data line socket 300, the second VBUS contact 210 contacts the third VBUS contact 310, and the second GND contact 220 contacts the third GND contact 320.

In the embodiment of the present disclosure, the number of the feedback contacts corresponds to the number of the voltage feedback lines and the feedback contacts in the data line assembly, that is, the voltage values fed back by the first VBUS contact 110 and the first GND contact 120 may be received simultaneously, or only one of the voltage values fed back may be received, specifically:

the feedback contacts include a VBUS feedback contact 211, the receiving contact includes a VBUS receiving contact 311, the VBUS receiving contact 311 is capable of contacting the VBUS feedback contact 211 when the charger plug 200 is inserted into the data line receptacle 300; and/or

The feedback contacts include GND feedback contacts 221, and the receiving contacts include GND receiving contacts 321, the GND receiving contacts 321 being capable of contacting the GND feedback contacts 221 when the charger plug 200 is inserted into the data line socket 300.

The relative position between the feedback contact and the second charging contact is not particularly limited in the embodiment of the present disclosure, for example, to improve the compatibility of the data line assembly provided in the embodiment of the present disclosure, it is preferable that, as shown in fig. 6, in a case that the receiving contact includes a VBUS receiving contact 311, the third VBUS contact 310 and the VBUS receiving contact 311 are spaced apart from each other in a direction in which the charger plug 200 is inserted into the charger.

It should be noted that the third VBUS contact 310 is shorter than the corresponding contacts in the prior art, and the distribution area of the third VBUS contact 310 and the VBUS receiving contact 311 is equivalent to the size and shape of one VBUS contact in the prior art, so that when a common data line is inserted into the charger provided by the embodiment of the present disclosure, the charger can also be used as a common charger, and the compatibility of data line components is improved.

In the case where the receiving contact includes the GND receiving contact 321, the third GND contact 320 is provided at an interval from the GND receiving contact 321 in the direction in which the charger plug 200 is inserted into the charger.

Likewise, the third GND contact 310 is shorter than the corresponding contacts in the prior art, and the distribution area of the third GND contact 310 and the GND receiving contact 311 is equivalent to the size and shape of one GND contact in the prior art, so that when a common data line is inserted into the charger provided by the embodiment of the disclosure, the charger can also be used as a common charger, and the compatibility of the data line component is improved.

For example, in order to implement a data transmission function of a data line assembly, as shown in fig. 6, as an implementation manner of the present disclosure, a third D + contact 340 and a third D-contact 330 are further disposed on the data line socket 300, when the charger plug 200 of the data line assembly is inserted into the data line socket 300, the second D + contact 240 on the charger plug 200 contacts the third D + contact 340 on the data line socket 300, and the second D-contact 230 on the charger plug 200 contacts the third D-contact 330 on the data line socket 300.

The embodiment of the present disclosure does not specifically limit the relative position relationship between the contacts on the plug, for example, for a contact arrangement mode compatible with a common socket in the prior art, as an implementation mode of the present disclosure, as shown in fig. 6, on the data line socket 300, the third VBUS contact, the third D-contact, the third D + contact, and the third GND contact are sequentially disposed at intervals along a direction perpendicular to the direction in which the charger plug 200 is inserted into the charger.

As a third aspect of the present disclosure, a charging device is provided, including a data line component and a charger, where two ends of the data line component are respectively used to connect with a mobile device and the charger, and the charger is used to provide electric energy to the mobile device through the data line component, where the data line component is the data line component provided in the embodiment of the present disclosure, and the charger is the charger provided in the embodiment of the present disclosure.

In the embodiment of the present disclosure, the data line assembly further includes a voltage feedback line and a feedback contact disposed on the charger plug 200, the data line socket 300 of the charger has a receiving contact, the feedback contact is electrically connected to the first charging contact disposed on the mobile device plug 100 through the voltage feedback line, so that when the charger plug 200 is inserted into the charger, the charger plug 200 can feed back an actual voltage value of a user terminal to the charger through the feedback contact, and the charger adjusts parameters such as an output voltage of the charger according to the fed-back actual voltage value, so as to implement corresponding voltage drop compensation for different charging current conditions, and maintain the actual voltage value of the user terminal within an ideal voltage range under various charging current conditions.

It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.

Claims

1. A data line component comprises a data line, a mobile device plug and a charger plug which are respectively arranged at two ends of the data line, wherein the mobile device plug is provided with a pair of first charging contacts, the charger plug is provided with a pair of second charging contacts, and the first charging contacts and the second charging contacts are electrically connected in a one-to-one correspondence manner through the data line,

2. The data line assembly of claim 1, wherein the first charging contact disposed in a pair comprises a first supply bus (VBUS) contact and a first Ground (GND) contact, and the second charging contact disposed in a pair comprises a second VBUS contact and a second GND contact, the first VBUS contact being electrically connected to the second VBUS contact, and the first GND contact being electrically connected to the second GND contact.

3. The data line assembly of claim 2, wherein the voltage feedback line comprises a VBUS feedback line, the feedback contact comprising a VBUS feedback contact, the VBUS feedback line electrically connected to the first VBUS contact at one end and the VBUS feedback contact at another end.

4. The data line assembly of claim 3, wherein the feedback contact comprises a VBUS feedback contact, the VBUS feedback contact spaced apart from the second VBUS contact in a direction of insertion of the charger plug into a charger.

5. The data line assembly of any one of claims 2 to 4, wherein the voltage feedback line comprises a GND feedback line, the feedback contact comprising a GND feedback contact, one end of the GND feedback line being electrically connected to the first GND contact and the other end being electrically connected to the GND feedback contact.

6. The data line assembly of claim 5, wherein the feedback contact comprises a GND feedback contact spaced from the second GND contact in a direction of insertion of the charger plug into a charger.

7. The data line assembly of any one of claims 1 to 4, wherein the mobile device plug is further provided with a first data transmission D + contact and a first data reception D-contact, the charger plug is further provided with a second D + contact and a second D-contact,

8. A charger comprising a power supply circuit and a data line socket, wherein the data line socket is provided with a pair of third charging contacts, the power supply circuit is used for providing a first potential signal and a second potential signal to two contacts of each pair of the third charging contacts respectively, and the data line socket further comprises at least one receiving contact, and the receiving contact can be in one-to-one contact with at least one feedback contact on a data line assembly when a charger plug of the data line assembly as claimed in any one of claims 1 to 7 is inserted into the data line socket.

9. The charger according to claim 8, wherein the first charging contacts disposed in pairs include a first power supply bus VBUS contact and a first ground GND contact, the second charging contacts disposed in pairs include a second VBUS contact and a second GND contact, the first VBUS contact is electrically connected to the second VBUS contact, the first GND contact is electrically connected to the second GND contact, the third charging contacts disposed in pairs include a third VBUS contact and a third GND contact, and the second VBUS contact is in contact with the third VBUS contact when the charger plug is inserted into the data line socket, the second GND contact is in contact with the third GND contact;

10. The charger of claim 9, wherein the receiving contact comprises a VBUS receiving contact, and wherein the third VBUS contact is spaced from the VBUS receiving contact in a direction of insertion of the charger plug into the charger.

11. The charger according to claim 9, wherein the receiving contact includes a GND receiving contact, and the third GND contact is provided at a distance from the GND receiving contact in a direction in which the charger plug is inserted into the charger.

12. The charger according to any one of claims 8 to 11, wherein a third D + contact and a third D-contact are further disposed on the data line socket, when the charger plug of the data line assembly is inserted into the data line socket, the second D + contact on the charger plug contacts with the third D + contact on the data line socket, and the second D-contact on the charger plug contacts with the third D-contact on the data line socket.

13. A charging device, comprising a data line assembly and a charger, wherein two ends of the data line assembly are respectively used for connecting with a mobile device and the charger, and the charger is used for providing electric energy for the mobile device through the data line assembly, wherein the data line assembly is the data line assembly in any one of claims 1 to 7, and the charger is the charger in any one of claims 8 to 12.