CN218976369U

CN218976369U - Charging circuit and related device

Info

Publication number: CN218976369U
Application number: CN202223092979.9U
Authority: CN
Inventors: 谭秋野
Original assignee: Fibocom Wireless Inc
Current assignee: Fibocom Wireless Inc
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-05
Anticipated expiration: 2032-11-17

Abstract

The application discloses a charging circuit and a related device, which are applied to the technical field of electronic power. The circuit comprises: the charging system comprises a first interface unit, a second interface unit, a charging unit and a platform; the first interface unit is connected with the platform, the second interface unit is connected with the platform, the platform is connected with the charging unit, and the platform is provided with a single Universal Serial Bus (USB) physical layer (PHY) interface; the first interface unit is used for OTG of the platform, and the second interface unit is used for charging the charging unit. The circuit can realize simultaneous charging in the OTG mode under the condition of only a single USB PHY interface.

Description

Charging circuit and related device

Technical Field

The present disclosure relates to the field of electronic power technology, and in particular, to a charging circuit and a related device.

Background

Generally, the current communication platform only has a single universal serial bus (universal serial bus, USB) physical layer (PHY) interface, which cannot meet the situation that the communication device does host and does device at the same time. For example, a scene in which a USB camera is turned on and charged. If the communication platform is changed, the problems of high project cost, prolonged project time and the like are caused.

Therefore, how to solve the problem of simultaneous charging in OTG mode in a single USB PHY interface scenario is an important issue for those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a charging circuit and a related device, which can realize simultaneous charging in an OTG mode under the scene of only a single USB PHY interface.

In a first aspect, embodiments of the present application provide a charging circuit, the circuit comprising:

the charging system comprises a first interface unit, a second interface unit, a charging unit and a platform;

the first interface unit is connected with the platform, the second interface unit is connected with the platform, the platform is connected with the charging unit, and the platform is provided with a single Universal Serial Bus (USB) physical layer (PHY) interface;

the first interface unit is used for OTG of the platform, and the second interface unit is used for charging the charging unit.

In this embodiment of the present application, OTG is performed through the first interface unit, and the second interface unit charges the charging unit, so that even in a platform having only a single USB PHY interface, the charging unit can be simultaneously charged in the OTG mode, and the problem that the charging unit cannot be simultaneously charged in the OTG mode in a scenario having only a single USB PHY interface is solved.

In one possible implementation, the first interface unit includes:

the first interface Type C1, the OTG boost VBUS and the first PD protocol chip;

the first interface Type C1 is respectively connected with the OTG boost VBUS, the first PD protocol chip and the platform, the OTG boost VBUS is connected with the platform, and the first PD protocol chip is connected with the platform;

the first interface Type C1 is used for OTG is carried out to the platform, the first PD protocol chip is used for discernment first interface Type C1 is in OTG mode, and to the platform sends first signal, the platform is used for through OTG pin for OTG boost VBUS power supply.

In this embodiment of the application, OTG is performed through the first interface Type C1, so that a platform having only a single USB PHY interface can be implemented, and OTG and charging can also be performed simultaneously.

In one possible implementation, the second interface unit includes:

the second interface Type C2 and the second PD protocol chip;

the second interface Type C2 is connected with the second PD protocol chip, and the second PD protocol chip is connected with the platform;

the second interface Type C2 is used for sending a second signal when the charging unit is charged, the second PD protocol chip is used for identifying that the second interface Type C2 is in a charging mode and forwarding the second signal to the platform, and the platform is used for charging the charging unit.

In this embodiment of the application, charging is performed through the second interface Type C2, so that a platform having only a single USB PHY interface can be realized, and OTG and charging can also be performed simultaneously.

In one possible embodiment, the charging unit includes:

a charging IC and a battery;

wherein the charging IC is respectively connected with the platform and the battery;

the charging IC is used for charging the battery.

In the embodiment of the application, the battery is charged through the charging IC, so that a platform with only a single USB PHY interface can be realized, and OTG and charging can be performed simultaneously.

In one possible embodiment, the current when the second interface unit charges the charging unit is greater than the current when the first interface unit performs OTG.

In this embodiment of the application, the second interface unit charges the current when the unit charges and is greater than the current when the first interface unit carries out OTG, can make the charging current when a Type-C interface charges always be greater than the current when another Type-C interface carries out OTG (for example, broadcast video or video recording), can guarantee that the platform continuously operates.

In one possible embodiment, the first interface unit has a higher priority for charging the charging unit than the second interface unit.

In this embodiment of the present application, the priority is clear to the interface that charges when inserting the charger simultaneously to two Type-C interfaces, and the priority that charges to the charging unit by first interface unit is higher than the priority that charges to the charging unit by second interface unit for can charge to the charging unit through first interface unit preferentially.

In one possible implementation, the first signal is sent to the platform through a first I2C and the second signal is sent to the platform through a second I2C.

In the embodiment of the application, the first signal and the second signal are respectively sent to the platform through different I2C buses, so that the platform with only a single USB PHY interface is realized, and OTG and charging can be simultaneously carried out.

In a second aspect, embodiments of the present application provide a charging device, which includes a power source, a chip, and a charging circuit according to any one of the first aspect and the corresponding embodiments.

In a possible implementation form, the power supply is used to power the chip and the charging circuit of any of the first aspect and the corresponding implementation form, the chip being a chip integrated inside the charging circuit or being a chip independent from the outside of the charging circuit.

In one possible embodiment, the charging device further comprises a docking station and an external device, wherein the docking station is connected with the external device and the charging circuit respectively.

In one possible embodiment, the charging circuit includes:

In one possible implementation, the first interface unit includes:

the first interface Type C1, the OTG boost VBUS and the first PD protocol chip;

In one possible implementation, the second interface unit includes:

the second interface Type C2 and the second PD protocol chip;

In one possible embodiment, the charging unit includes:

a charging IC and a battery;

the charging IC is used for charging the battery.

With regard to the technical effects brought about by the second aspect and any one of the possible embodiments, reference may be made to the description of the technical effects corresponding to the first aspect and the corresponding embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a charging circuit according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a charging circuit according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a charging device according to an embodiment of the present application;

fig. 4 is a schematic signal diagram provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The terms first and second and the like in the description, in the claims and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the list of steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

It should be understood that, in the present application, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three and three or more, "and/or" for describing an association relationship of an association object, three kinds of relationships may exist, for example, "a and/or B" may mean: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The present application provides a charging circuit, and in order to more clearly describe the solution of the present application, some knowledge related to charging is introduced below.

OTG: is The abbreviation of On-The-Go, and is mainly applied to The connection between different devices or mobile devices for data exchange. OTG technology allows for data transfer between devices without a Host (Host). Through OTG technique, can extend USB interface accessory for intelligent terminal in order to enrich intelligent terminal's function, for example extend remote controller accessory, become cell-phone, dull and stereotyped universal remote controller and use.

Aiming at the problem that the single USB PHY interface scene can not be charged simultaneously in the OTG mode, the application provides a charging circuit and a charging device, which can realize that the single USB PHY interface can be charged simultaneously in the OTG mode even in a platform with the single USB PHY interface, and solve the problem that the single USB PHY interface scene can not be charged simultaneously in the OTG mode.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a charging circuit according to an embodiment of the present application.

As shown in fig. 1, a charging circuit described in an embodiment of the present application includes:

a first interface unit 10, a second interface unit 20, a charging unit 30, and a platform 40;

the first interface unit 10 is connected with the platform 40, the second interface unit 20 is connected with the platform 40, the platform 40 is connected with the charging unit 30, and the platform 40 is provided with a single Universal Serial Bus (USB) physical layer (PHY) interface;

the first interface unit 10 is used for OTG by the platform 40, and the second interface unit 20 is used for charging the charging unit 30.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a charging circuit according to an embodiment of the present application.

As shown in fig. 2, the charging circuit described in the embodiment of the present application includes:

In one possible embodiment, the first interface unit 10 comprises:

the first interface Type C1 (101), the OTG boost VBUS (102) and the first PD protocol chip 103;

the first interface Type C1 (101) is respectively connected with the OTG boost VBUS (102), the first PD protocol chip 103 and the platform 40, the OTG boost VBUS (102) is connected with the platform 40, and the first PD protocol chip 103 is connected with the platform 40;

the first interface Type C1 (101) is used for carrying out OTG on the platform 40, the first PD protocol chip 103 is used for identifying that the first interface Type C1 (101) is in an OTG mode and sending a first signal to the platform 40, and the platform 40 is used for supplying power to the OTG boost VBUS (102) through an OTG pin.

In one possible embodiment, the second interface unit 20 comprises:

a second interface Type C2 (201), a second PD protocol chip 202;

the second interface Type C2 (201) is connected with the second PD protocol chip 202, and the second PD protocol chip 202 is connected with the platform 40;

the second interface Type C2 (201) is configured to send a second signal when the charging unit 30 is charged, the second PD protocol chip 202 is configured to identify that the second interface Type C2 (201) is in the charging mode, forward the second signal to the platform 40, and the platform 40 is configured to charge the charging unit 30.

In one possible embodiment, the charging unit 30 includes:

a charging IC (301) and a battery 302;

wherein the charging IC (301) is connected with the platform 40 and the battery 302 respectively;

the charging IC (301) is used to charge the battery 302.

In the charging circuit described in fig. 1 and 2, it is possible to obtain:

In a possible embodiment, the first interface unit charges the charging unit with a higher priority than the second interface unit charges the charging unit.

In one possible embodiment, the first signal is sent to the platform through a first I2C and the second signal is sent to the platform through a second I2C.

In one possible embodiment, only the Type-C interface of the charging function may be externally identified, so as to implement the functions of OTG and charging of different Type-C interfaces.

The embodiment of the application further provides a charging device, and in particular, referring to fig. 3, fig. 3 is a schematic structural diagram of the charging device provided in the embodiment of the application.

As shown in fig. 3, the device includes a power supply, a chip, and a charging circuit as shown in any one of fig. 1 or fig. 2 above.

In one possible embodiment, the power supply is used to supply power to the chip and the charging circuit, and the chip may be a chip integrated inside the charging circuit or may be a chip independent of the outside of the charging circuit, so as to control the signal flow direction of the charging circuit.

In one possible embodiment, the charging apparatus further includes a docking station 50 and an external device (e.g., device 1, device 2, device n, etc.), and the docking station 50 is connected to the external device and the charging circuit, respectively.

In one possible embodiment, the charging circuit includes:

In a possible embodiment, the first interface unit comprises:

the first interface Type C1, the OTG boost VBUS and the first PD protocol chip;

In a possible embodiment, the second interface unit comprises:

the second interface Type C2 and the second PD protocol chip;

In one possible embodiment, the charging unit includes:

a charging IC and a battery;

the charging IC is used for charging the battery.

In a possible embodiment, the current when the second interface unit charges the charging unit is greater than the current when the first interface unit performs OTG.

In a possible embodiment, the first interface unit has a higher priority for charging the charging unit than the second interface unit.

Specifically, the connection manner and the signal flow direction between the modules or units in the charging device may refer to fig. 1 or fig. 2, and the description of the technical effects of the charging device corresponding to the technical effects of fig. 1 or fig. 2 may be referred to and will not be repeated herein.

For example, the first signal and the second signal may refer to fig. 4, and fig. 4 is a schematic signal diagram provided in the embodiment of the present application.

As shown in fig. 4, the signal described in this embodiment is a square wave signal alternately appearing at a high level and a low level, and may include a transmission control command or a data segment or a data block, where the signal corresponds to the low level at "0" and the signal corresponds to the high level at "1". The control command is taken as an example of the signal, the signal is low level "0" in the first time period, high level "1" in the second time period, low level "0" in the third time period, low level "0" in the fourth time period and high level "1" in the fifth time period, the sum of the duration of the five time periods can be taken as one period, the corresponding levels of the five time periods can be repeatedly generated in the next period, and the signal can be used for periodically transmitting the same control command. It should be noted that the high and low levels in the signal do not correspond to voltages of two specific values, but to two voltage ranges. The signals described in this embodiment may be a first signal, a second signal in the charging circuit.

Through the above application embodiment, OTG is carried out through the first interface unit, and the second interface unit charges the charging unit, so that even in a platform with only a single USB PHY interface, the charging unit can be simultaneously charged in an OTG mode, and the problem that the charging unit can not be simultaneously charged in the OTG mode in a single USB PHY interface scene is solved.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A charging circuit, comprising:

2. The charging circuit of claim 1, wherein the first interface unit comprises:

the first interface Type C1, the OTG boost VBUS and the first PD protocol chip;

3. The charging circuit of claim 2, wherein the second interface unit comprises:

the second interface Type C2 and the second PD protocol chip;

4. A charging circuit according to claim 3, wherein the charging unit comprises:

a charging IC and a battery;

the charging IC is used for charging the battery.

5. The charging circuit of claim 3 or 4, wherein the current when the second interface unit charges the charging unit is greater than the current when the first interface unit performs OTG.

6. The charging circuit of claim 5, wherein the first interface unit has a higher priority to charge the charging unit than the second interface unit.

7. The charging circuit of claim 6, wherein the first signal is sent to the platform via a first I2C and the second signal is sent to the platform via a second I2C.

8. A charging device comprising a power supply, a chip, and the charging circuit of any one of claims 1 to 7.

9. The charging device according to claim 8, wherein the power supply is configured to supply power to the chip and the charging circuit according to any one of claims 1 to 7, the chip being integrated inside the charging circuit or being independent from a chip outside the charging circuit.

10. The charging apparatus according to claim 8 or 9, further comprising a docking station and an external device, the docking station being connected to the external device and the charging circuit, respectively.