A compatible circuit for charging and a compatible functional device

Abstract

This utility model discloses a compatible circuit and a compatible functional device for charging. The compatible circuit is used to connect to an external Apple connector. The compatible circuit includes: an MCU signal processing circuit, a charge / discharge management circuit, a USB-C input / output interface circuit, an Apple connector input / output interface circuit, and a delay control circuit. The MCU signal processing circuit is connected to the charge / discharge management circuit, the USB-C input / output interface circuit, the Apple connector input / output interface circuit, and the delay control circuit. The charge / discharge management circuit is connected to the USB-C input / output interface circuit and the Apple connector input / output interface circuit. The Apple connector input / output interface circuit is connected to the delay control circuit, and the delay control circuit is connected to the Apple connector. This application can be applied to scenarios involving charging power banks, chargers, and digital products, achieving charging compatibility between charging devices of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of charging, and in particular to a compatible circuit and compatible functional device for charging. Background Technology

[0002] In existing technologies, when Apple female connectors are used as both input and output connectors, it is difficult to solve the charging compatibility issue between different brands of chargers. For example, when an Apple female connector for a terminal device or power bank has both input and output functions, if a charger and a Lightning cable are connected, the data cable's built-in MOSFETs consume power. At this time, the terminal device or power bank detects the output current and defaults to outputting power. However, the purpose of connecting a charger is to charge the terminal device; this causes a conflict between the charging and discharging actions of the device, affecting normal charging or even preventing charging altogether.

[0003] Therefore, the industry needs to design a compatible circuit and compatible functional device for charging to solve the above-mentioned technical problems. Utility Model Content

[0004] To address the aforementioned problems, in a first aspect, this application proposes a compatible circuit for charging, the compatible circuit being used to connect to an external Apple connector, the compatible circuit comprising: an MCU signal processing circuit, a charge / discharge management circuit, a USB-C connector input / output interface circuit, an Apple connector input / output interface circuit, and a delay control circuit; the MCU signal processing circuit is connected to the charge / discharge management circuit, the USB-C connector input / output interface circuit, the Apple connector input / output interface circuit, and the delay control circuit; the charge / discharge management circuit is connected to the USB-C connector input / output interface circuit and the Apple connector input / output interface circuit, the Apple connector input / output interface circuit is connected to the delay control circuit, and the delay control circuit is connected to the Apple connector.

[0005] A further technical solution is that the delay control circuit is used to control the charging state of the Apple female connector input / output interface circuit.

[0006] A further technical solution is that the compatible circuit also includes a display module and a touch module, wherein the display module is connected to the MCU signal processing circuit and the touch module is connected to the MCU signal processing circuit.

[0007] A further technical solution is that the compatible circuit also includes a lithium battery protection circuit and a battery cell, the charge / discharge management circuit is connected to the lithium battery protection circuit, and the lithium battery protection circuit is connected to the battery cell.

[0008] A further technical solution is that the BVBUSC terminal of the Apple female connector input / output interface circuit is connected to resistor R14, resistor R14 is connected to resistor R13, resistor R13 is connected to the VDD terminal of the SOT23-6 chip, and the NGT terminal of the SOT23-6 chip is connected to the delay control circuit.

[0009] A further technical solution is that the NGT terminal of the SOT23-6 chip of the Apple female connector input / output interface circuit is connected to the positive terminal of the diode D1 of the delay control circuit, the negative terminal of the diode D1 is connected to the resistor R18, and the resistor R18 is connected to the CC1-1 terminal.

[0010] A further technical solution is as follows: the resistor R18 is also connected to the drain (D) of the NMOS switch Q3; the gate (G) of the NMOS switch Q3 is connected to the CCSW module and the MCU signal processing circuit; the source (S) of the NMOS switch Q3 is connected to the positive terminal of the diode D2; the negative terminal of the diode D2 is connected to the drain (D) of the NMOS switch Q3; the source (S) of the NMOS switch Q3 is also connected to the source (S) of the NMOS switch Q5; the gate (G) of the NMOS switch Q5 is connected to the CCSW module and the MCU signal processing circuit; the drain (D) of the NMOS switch Q5 is connected to the negative terminal of the diode D3; the positive terminal of the diode D3 is connected to the source (S) of the NMOS switch Q5 and to the positive terminal of the diode D2; and the drain (D) of the NMOS switch Q5 is also connected to the Apple connector via the CC-AP terminal.

[0011] A further technical solution is as follows: the MCU signal processing circuit includes an MCU unit, which includes a CCSW terminal. The CCSW module includes resistors R31 and R30. The gate (G) of NMOS switch Q3 is connected to the CCSW terminal through resistor R31, and the gate (G) of NMOS switch Q5 is also connected to the CCSW terminal through resistor R31. Resistor R31 is also connected to resistor R30, and resistor R30 is grounded. Under normal conditions, NMOS switches Q3 and Q5 are turned on. When the voltage at the BVBUSC terminal is detected, the MCU powers on, the CCSW terminal outputs a high level, and NMOS switches Q3 and Q5 are turned off. The Apple connector's CC-AP terminal does not receive a signal and cannot charge. After a delay of approximately two seconds, the CCSW terminal returns to normal, and NMOS switches Q3 and Q5 are turned on. The signal output by NMOS switches Q3 and Q5 at the CC1-1 terminal is transmitted to the Apple connector through the CC-AP terminal, thus achieving charging.

[0012] Secondly, this application proposes a compatibility device, including a compatibility circuit for charging as described in the first aspect, wherein the compatibility circuit is connected to an external Apple connector. The compatibility device enables charging compatibility between charging devices of different brands.

[0013] In summary, current Apple female connectors, when used as both input and output connectors, struggle to address charging compatibility issues between different brand chargers. Therefore, this application can be applied to scenarios involving power banks, chargers, and digital product charging, enabling charging compatibility between different brand charging devices and between charging devices of different specifications. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an overall block diagram of the compatible circuit proposed in this utility model.

[0016] Figure 2 The first figure shows the charge and discharge management circuit of the compatible circuit proposed in this utility model.

[0017] Figure 3 The second figure shows the charge and discharge management circuit of the compatible circuit proposed in this utility model.

[0018] Figure 4 This is an overall diagram of the charge and discharge management circuit of the compatible circuit proposed in this utility model.

[0019] Figure 5 This is a circuit diagram of the MCU signal processing circuit for the compatible circuit proposed in this utility model.

[0020] Figure 6 This is a circuit diagram of the C-type input / output interface of the compatible circuit proposed in this utility model.

[0021] Figure 7 This invention relates to an Apple female connector input / output interface circuit for a compatible circuit proposed in this utility model.

[0022] Figure 8 This invention relates to a delay control circuit for a compatible circuit.

[0023] Figure 9 This is a display module diagram of the compatible circuit proposed in this utility model.

[0024] Figure 10This is a diagram of the touch module of the compatible circuit proposed in this utility model.

[0025] Figure 11 This is a lithium battery protection circuit diagram for the compatible circuit proposed in this utility model. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] Example

[0029] See Figures 1 to 11 As shown in the figure, a compatible circuit for charging is proposed in an embodiment of this utility model. The compatible circuit is used to connect to an external Apple connector. The compatible circuit includes: an MCU signal processing circuit, a charge / discharge management circuit, a USB-C connector input / output interface circuit, an Apple connector input / output interface circuit, and a delay control circuit. The MCU signal processing circuit is connected to the charge / discharge management circuit, the USB-C connector input / output interface circuit, and the Apple connector input / output interface circuit. The charge / discharge management circuit is connected to the USB-C connector input / output interface circuit and the Apple connector input / output interface circuit. The Apple connector input / output interface circuit is connected to the delay control circuit, and the delay control circuit is connected to the Apple connector.

[0030] Furthermore, the delay control circuit is used to control the charging state of the Apple female connector input / output interface circuit. Furthermore, the compatibility circuit also includes a display module and a touch module, the display module being connected to the MCU signal processing circuit, and the touch module being connected to the MCU signal processing circuit. Furthermore, the compatibility circuit also includes a lithium battery protection circuit and a battery cell, the charge / discharge management circuit being connected to the lithium battery protection circuit, and the lithium battery protection circuit being connected to the battery cell.

[0031] The above solution comprises several main components: an MCU signal processing circuit for overall control, a charge / discharge management circuit for managing power input and output, a Type-C connector input / output interface circuit, an Apple connector input / output interface circuit for connecting to the Apple connector, and a delay control circuit. The MCU signal processing circuit is connected to the charge / discharge management circuit, the Type-C connector input / output interface circuit, the Apple connector input / output interface circuit, and the delay control circuit. The charge / discharge management circuit is connected to both the Type-C connector input / output interface circuit and the Apple connector input / output interface circuit. The Apple connector input / output interface circuit is connected to the delay control circuit, which in turn is connected to the external Apple connector. Specifically, the delay control circuit controls the charging state of the Apple connector input / output interface circuit. Furthermore, this compatible circuit may also include a display module and a touch module connected to the MCU signal processing circuit for human-machine interaction. It also includes a lithium battery protection circuit and battery cells for lithium battery protection; the charge / discharge management circuit is connected to the lithium battery protection circuit, which in turn is connected to the battery cells.

[0032] Furthermore, the BVBUSC terminal of the Apple female connector input / output interface circuit is connected to resistor R14, resistor R14 is connected to resistor R13, resistor R13 is connected to the VDD terminal of the SOT23-6 chip, and the NGT terminal of the SOT23-6 chip is connected to the delay control circuit. Furthermore, the NGT terminal of the SOT23-6 chip in the Apple female connector input / output interface circuit is connected to the positive terminal of diode D1 in the delay control circuit, the negative terminal of diode D1 is connected to resistor R18, and resistor R18 is connected to the CC1-1 terminal. The solution described in this application can achieve charging compatibility between charging devices of different specifications; these different specifications can refer to situations where there are significant differences in specifications affecting charging, or situations where different brands affect charging.

[0033] Furthermore, resistor R18 is also connected to the drain (D) of NMOS switch Q3. The gate (G) of NMOS switch Q3 is connected to the CCSW module and the MCU signal processing circuit. The source (S) of NMOS switch Q3 is connected to the positive terminal of diode D2. The negative terminal of diode D2 is connected to the drain (D) of NMOS switch Q3. The source (S) of NMOS switch Q3 is also connected to the source (S) of NMOS switch Q5. The gate (G) of NMOS switch Q5 is connected to the CCSW module and the MCU signal processing circuit. The drain (D) of NMOS switch Q5 is connected to the negative terminal of diode D3. The positive terminal of diode D3 is connected to the source (S) of NMOS switch Q5 and the positive terminal of diode D2. The drain (D) of NMOS switch Q5 is also connected to the Apple connector via the CC-AP terminal.

[0034] Furthermore, the MCU signal processing circuit includes an MCU unit, the MCU unit includes a CCSW terminal, the CCSW module includes resistor R31 and resistor R30, the gate of the NMOS switch Q3 is connected to the CCSW terminal through resistor R31, the gate of the NMOS switch Q5 is connected to the CCSW terminal through resistor R31, resistor R31 is also connected to resistor R30, and resistor R30 is grounded.

[0035] Furthermore, this utility model embodiment proposes a compatibility function device, which includes a compatibility circuit for charging as described in any of the above embodiments, the compatibility circuit being connected to an external Apple connector. The compatibility function device can achieve charging compatibility between charging devices of different specifications.

[0036] In summary, existing technologies struggle to address charging compatibility issues between different brand chargers when using Apple female connectors as both input and output connectors. For instance, when an Apple female connector for a terminal device or power bank functions as both input and output, connecting a charger and a Lightning cable results in power consumption due to the power MOSFETs in the cable. Consequently, the terminal device or power bank detects the output current and defaults to outputting power. However, the purpose of connecting a charger is to charge the terminal device; this creates a conflict between charging and discharging, affecting normal charging or even preventing it from happening. Therefore, this application proposes a compatible circuit and a compatible functional device for charging, enabling charging compatibility between charging devices of different specifications.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0042] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0043] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A compatible circuit for charging, characterized in that, The compatibility circuit is used to connect to an external Apple connector, and the compatibility circuit includes: MCU signal processing circuit, charge and discharge management circuit, C-type input / output interface circuit, Apple female input / output interface circuit, delay control circuit; The MCU signal processing circuit is connected to the charge / discharge management circuit, the C-type input / output interface circuit, the Apple female input / output interface circuit, and the delay control circuit. The charging and discharging management circuit is connected to the C-type input / output interface circuit and the Apple female connector input / output interface circuit. The Apple female connector input / output interface circuit is connected to the delay control circuit, and the delay control circuit is connected to the Apple female connector.

2. The compatible circuit for charging according to claim 1, characterized in that: The delay control circuit is used to control the charging state of the Apple female connector input / output interface circuit.

3. The compatible circuit for charging according to claim 2, characterized in that: The compatible circuit also includes a display module and a touch module, wherein the display module is connected to the MCU signal processing circuit and the touch module is connected to the MCU signal processing circuit.

4. The compatible circuit for charging according to claim 3, characterized in that: The compatible circuit also includes a lithium battery protection circuit and a battery cell. The charge / discharge management circuit is connected to the lithium battery protection circuit, and the lithium battery protection circuit is connected to the battery cell.

5. The compatible circuit for charging according to claim 1, characterized in that: The BVBUSC terminal of the Apple female connector input / output interface circuit is connected to resistor R14, resistor R14 is connected to resistor R13, resistor R13 is connected to the VDD terminal of the SOT23-6 chip, and the NGT terminal of the SOT23-6 chip is connected to the delay control circuit.

6. The compatible circuit for charging according to claim 5, characterized in that: The NGT terminal of the SOT23-6 chip in the Apple female connector input / output interface circuit is connected to the positive terminal of diode D1 in the delay control circuit, and the negative terminal of diode D1 is connected to resistor R18, which is connected to the CC1-1 terminal.

7. The compatible circuit for charging according to claim 6, characterized in that: The resistor R18 is also connected to the drain of the NMOS switch Q3. The gate of the NMOS switch Q3 is connected to the CCSW module and the MCU signal processing circuit. The source of the NMOS switch Q3 is connected to the positive terminal of the diode D2. The negative terminal of the diode D2 is connected to the drain of the NMOS switch Q3. The source (S) of NMOS switch Q3 is also connected to the source (S) of NMOS switch Q5. The gate (G) of NMOS switch Q5 is connected to the CCSW module and the MCU signal processing circuit. The drain (D) of NMOS switch Q5 is connected to the negative terminal of diode D3. The positive terminal of diode D3 is connected to the source (S) of NMOS switch Q5 and the positive terminal of diode D2. The drain (D) of NMOS switch Q5 is also connected to the Apple connector via the CC-AP terminal.

8. The compatible circuit for charging according to claim 7, characterized in that: The MCU signal processing circuit includes an MCU unit, the MCU unit includes a CCSW terminal, the CCSW module includes resistor R31 and resistor R30, the gate of the NMOS switch Q3 is connected to the CCSW terminal through resistor R31, the gate of the NMOS switch Q5 is connected to the CCSW terminal through resistor R31, resistor R31 is also connected to resistor R30, and resistor R30 is grounded.

9. A compatible functional device, characterized in that, The compatible device includes a compatible circuit for charging as described in any one of claims 1 to 8, the compatible circuit being connected to an external Apple connector.

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