Charging wire integrating intelligent switching of storage and power supply

Abstract

The utility model relates to a charging line integrating intelligent switching of storage and power supply. The charging line comprises a storage circuit board, a power supply control board, an uplink equipment interface and a downlink power supply interface, the power control board comprises a step-down compensation circuit and a power switching circuit, the uplink equipment interface and the downlink power supply interface are electrically connected with the power switching circuit, and the power switching circuit is connected in series with the step-down compensation circuit to supply power to the storage circuit board; the power supply switching circuit realizes switching between power supply from the uplink equipment interface to the storage circuit board and power supply from the downlink power supply interface to the storage circuit board; a plurality of grounded capacitors are arranged among the step-down compensation circuit, the power switching circuit and the storage circuit board; the capacitor supplies power to the storage circuit board when discharging. According to the charging line, when the equipment connected with the uplink equipment interface is performing storage read-write work, the downlink power supply interface is connected with an external power supply or cuts off power supply, seamless power supply switching is realized through compensation of the capacitor, and the situation that the work is accidentally stopped due to power failure of a memory of the storage circuit board is prevented.

Description

Technical Field

[0001] The utility model relates to a charging cable, in particular to a charging cable with integrated storage and power supply intelligent switching. Background Art

[0002] For large-capacity mobile storage devices such as mobile phones and computers, current mobile hard disks have only one data transmission interface, which is also the interface for powering the mobile hard disk. When a mobile phone or computer needs to be recharged, especially a device like a mobile phone that only has one interface, the mobile hard disk needs to be removed before charging.

[0003] According to the above demand, it is a trend to add storage components to charging cables to form new products. However, there are two different power supply routes for powering mobile phones and other devices and for devices to power storage components. Traditional solutions are too complicated, resulting in a large product size. For users, as a charging cable, this product is not very convenient to carry. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0004] In view of the above situation, it is necessary to provide a charging cable that solves at least one of the above problems.

[0005] The utility model provides a charging cable with integrated storage and power supply intelligent switching, including a storage circuit board, a power control board, an upstream device interface and a downstream power supply interface;

[0006] The power control board includes a voltage reduction compensation circuit and a power switching circuit, the upstream device interface and the downstream power supply interface are electrically connected to the power switching circuit, and the power switching circuit is connected in series with the voltage reduction compensation circuit to supply power to the storage circuit board;

[0007] The power switching circuit realizes switching between supplying power to the storage circuit board from the upstream device interface and supplying power to the storage circuit board from the downstream power supply interface;

[0008] A plurality of grounded capacitors are arranged at nodes between the voltage reduction compensation circuit, the power supply switching circuit and the storage circuit board;

[0009] The capacitor supplies power to the storage circuit board when discharged.

[0010] As a further solution of the utility model: the power switching circuit includes two groups of power switching circuits, and the two groups of power switching circuits allow current to flow in opposite directions;

[0011] The node between the two groups of the power supply switching circuits is connected in series with the voltage reduction compensation circuit.

[0012] As a further solution of the utility model: the storage circuit board and the power control board are stacked;

[0013] An electrical connector is provided between the storage circuit board and the power control board, and the storage circuit board and the power control board are electrically connected via the electrical connector.

[0014] As a further solution of the utility model: the power switching circuit includes a first interface connected to the voltage reduction compensation circuit, a second interface electrically connected to the upstream device interface, and a third interface electrically connected to the downstream power supply interface.

[0015] As a further solution of the utility model: the power switching circuit further includes a fourth interface;

[0016] The power control board also includes a PD protocol chip, and the PD protocol chip is connected to the power switching circuit signal through the fourth interface;

[0017] The PD protocol chip is also connected to the upstream device interface and the downstream power supply interface signal.

[0018] As a further solution of the utility model: the upstream device interface and the downstream power supply interface are USB connectors.

[0019] The above-mentioned charging cable adopts a combination of power switching circuit, buck compensation circuit and PD protocol chip, and has the following advantages: when the device connected to the upstream device interface is performing storage reading and writing, the downstream power supply interface is connected to an external power supply or disconnected from the power supply, and seamless power switching can be achieved through the capacitor of the buck compensation circuit to prevent the memory of the storage circuit board from losing power, causing unexpected termination of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a block diagram of an embodiment of the utility model;

[0021] Figure 2 It is a position relationship diagram between two circuit boards in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] like Figure 1-Figure 2 As shown, this embodiment provides a charging cable with integrated storage and power supply intelligent switching, including a storage circuit board 4, a power control board 3, an upstream device interface 1 and a downstream power supply interface 2; the upstream device interface 1 is connected to a mobile phone, a computer, a tablet and other devices, and the device can identify and read the product storage module. At this time, the external device supplies power to the storage circuit board 4 through the upstream device interface 1. The downstream power supply interface 2 is connected to an external power source such as a power bank and a power adapter. At this time, the external power supply supplies power to the device connected to the upstream device interface 1 and the storage circuit board 4 through the downstream power supply interface 2.

[0026] The power control board 3 includes a voltage reduction compensation circuit 32 and a power switching circuit 31, the upstream device interface 1 and the downstream power supply interface 2 are electrically connected to the power switching circuit 31, and the power switching circuit 31 is connected in series with the voltage reduction compensation circuit 32 to supply power to the storage circuit board 4;

[0027] The power switching circuit 31 implements switching between supplying power from the upstream device interface 1 to the storage circuit board 4 and supplying power from the downstream power supply interface 2 to the storage circuit board 4;

[0028] A plurality of grounded capacitors 321 are provided at the nodes between the voltage reduction compensation circuit 32 and the power switching circuit 31 and the storage circuit board 4;

[0029] The capacitor 321 supplies power to the storage circuit board 4 when discharging.

[0030] As a further solution of the utility model: the power switching circuit 31 includes two groups of power switching circuits, and the two groups of power switching circuits allow current to flow in opposite directions;

[0031] The node between the two groups of the power supply switching circuits is connected in series with the voltage reduction compensation circuit 32 .

[0032] As a further solution of the utility model: the storage circuit board 4 and the power control board 3 are stacked;

[0033] An electrical connector 5 is provided between the storage circuit board 4 and the power control board 3, and the storage circuit board 4 and the power control board 3 are electrically connected through the electrical connector 5. After the storage circuit board 4 is separated from the power control board 3, they are connected through a connector, which effectively isolates the mutual influence caused by the heating of the two modules, thereby improving the stability of the product and bringing a better product experience.

[0034] As a further solution of the utility model: the power switching circuit 31 includes a first interface connected to the voltage reduction compensation circuit 32 , a second interface electrically connected to the upstream device interface 1 , and a third interface electrically connected to the downstream power supply interface 2 .

[0035] As a further solution of the utility model: the power switching circuit 31 also includes a fourth interface;

[0036] The power control board 3 also includes a PD protocol chip 33, and the PD protocol chip 33 is connected to the power switching circuit 31 through the fourth interface;

[0037] The PD protocol chip 33 is also signal-connected to the upstream device interface 1 and the downstream power supply interface 2 .

[0038] As a further solution of the utility model: the upstream device interface 1 and the downstream power supply interface 2 are USB connectors.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A charging cable with integrated storage and power supply intelligent switching, characterized in that: It includes storage circuit board, power control board, upstream device interface and downstream power supply interface; The power control board includes a voltage reduction compensation circuit and a power switching circuit, the upstream device interface and the downstream power supply interface are electrically connected to the power switching circuit, and the power switching circuit is connected in series with the voltage reduction compensation circuit to supply power to the storage circuit board; The power switching circuit realizes switching between supplying power to the storage circuit board from the upstream device interface and supplying power to the storage circuit board from the downstream power supply interface; A plurality of grounded capacitors are arranged at nodes between the voltage reduction compensation circuit, the power supply switching circuit and the storage circuit board; The capacitor supplies power to the storage circuit board when discharged.

2. The charging cable according to claim 1, characterized in that: The power switching circuit includes two groups of power switching circuits, and the two groups of power switching circuits allow current to flow in opposite directions; The node between the two groups of the power supply switching circuits is connected in series with the voltage reduction compensation circuit.

3. The charging cable according to claim 1, characterized in that: The storage circuit board and the power control board are stacked; An electrical connector is provided between the storage circuit board and the power control board, and the storage circuit board and the power control board are electrically connected via the electrical connector.

4. The charging cable according to any one of claims 1 to 3, characterized in that: The power switching circuit includes a first interface connected to the voltage reduction compensation circuit, a second interface electrically connected to the upstream device interface, and a third interface electrically connected to the downstream power supply interface.

5. The charging cable according to claim 4, characterized in that: The power switching circuit also includes a fourth interface; The power control board also includes a PD protocol chip, and the PD protocol chip is connected to the power switching circuit signal through the fourth interface; The PD protocol chip is also connected to the upstream device interface and the downstream power supply interface signal.

6. The charging cable according to claim 4, characterized in that: The upstream device interface and the downstream power supply interface are USB connectors.

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