One-to-many charging device

Abstract

The utility model discloses a one-to-many charging device, comprising a main control module, an input interface, n DC-DC circuits, m output interfaces and m(n+1) switch circuits, wherein m-1≥n≥0, m≥3, the main control module is electrically connected to the input interface, the input interface is electrically connected to the input ends of the n DC-DC circuits respectively, and the n DC-DC circuits can output n charging voltages of different sizes; each of the output interfaces comprises n+1 input ends, the n+1 input ends are respectively provided with a switch circuit, one input end of the output interface is electrically connected to the input interface through the corresponding switch circuit, and the remaining input ends are electrically connected to the output ends of the n DC-DC circuits in a one-to-one correspondence through the corresponding switch circuit; the main control module is electrically connected to the m(n+1) switch circuits respectively, and the main control module communicates with the m output interfaces respectively to obtain the power supply requirements at the corresponding output interfaces, thereby controlling the on-off state of the corresponding switch circuit, so that the corresponding output interface outputs the charging voltage of the corresponding size.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, in particular to a one-to-many charging device. Background Art

[0002] In order to meet the various charging needs of users, the charging power is constantly increasing, and the cable structure is also constantly changing. For example, the charging device with a common slow charging interface has developed into a one-to-two charging device with a slow charging interface and a fast charging interface. The common one-to-two devices on the market generally only have one branch line that supports fast charging, and the other branch line only supports ordinary 5V slow charging. Its general framework is as follows Figure 1 As shown, it is necessary to distinguish between the fast charging interface and the slow charging interface when using, and the charging power provided by the power supply device cannot be fully utilized, and there is only one fast charging channel, which is difficult to meet the user's demand for multiple fast charging channels. Utility Model Content

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a one-to-many charging device that does not need to distinguish between fast charging / slow charging interfaces and can meet the needs of multi-channel fast charging.

[0004] According to an embodiment of the utility model, a one-to-many charging device includes a main control module, an input interface, n DC-DC circuits, m output interfaces and m(n+1) switch circuits, wherein m-1≥n≥0, m≥3, the main control module is electrically connected to the input interface, the input interface is electrically connected to the input ends of the n DC-DC circuits respectively, and the n DC-DC circuits can output n charging voltages of different sizes; each of the output interfaces includes n+1 input ends, and the n+1 input ends are respectively provided with a switch circuit, one input end of the output interface is electrically connected to the input interface through the corresponding switch circuit, and the remaining input ends are electrically connected to the output ends of the n DC-DC circuits in a one-to-one correspondence through the corresponding switch circuit; the main control module is electrically connected to the m(n+1) switch circuits respectively, and the main control module communicates with the m output interfaces respectively to obtain the power supply requirements at the corresponding output interfaces, thereby controlling the on-off state of the corresponding switch circuit, so that the corresponding output interface outputs a charging voltage of a corresponding size.

[0005] According to some embodiments of the present invention, the DC-DC circuit is a BUCK circuit or a BUCK-BOOST circuit.

[0006] According to some embodiments of the present utility model, the input interface is electrically connected to the power supply device, the main control module communicates with the power supply device through the input interface to adjust the power supply device output voltage that complies with the charging protocol, and the output interface is electrically connected to the load.

[0007] According to some embodiments of the utility model, the main control module includes a protocol chip 1 and a protocol chip 2 that communicate with each other. The protocol chip 1 obtains the information of the power supply device through the input interface and adjusts the power supply device to output a voltage that complies with the charging protocol. The protocol chip 2 is electrically connected to the m(n+1) switching circuits respectively. The protocol chip 2 communicates with the m output interfaces respectively to obtain the power supply requirements of the loads at the corresponding output interfaces and control the on-off state of the corresponding switching circuits.

[0008] According to some embodiments of the present utility model, the switching circuit includes a MOS tube, the G pole of the MOS tube is electrically connected to the protocol chip 2, the S pole of the MOS tube is electrically connected to the input end of the corresponding output interface, and the D pole of the MOS tube is electrically connected to the output end of the corresponding DC-DC circuit or the output end of the input interface.

[0009] According to the one-to-many charging device of the embodiment of the utility model, at least the following beneficial effects are achieved: the input interface of the device can be electrically connected to the power supply device, the input interface and n DC-DC circuits can respectively power m output interfaces, and multiple output interfaces can also share the charging voltage on one input interface, which can meet the power supply requirements of different devices. When any two output interfaces are connected to the load at the same time, the output interface with the highest voltage requirement can be directly connected to the power supply device through the input interface to obtain the highest charging voltage, and the output interface with the second voltage requirement can be powered by the corresponding DC-DC circuit. Similarly, when any m output interfaces are connected to the load, one or more output interfaces with the highest voltage requirement can be directly connected to the power supply device through the input interface to obtain the charging voltage, one or more output interfaces with the second voltage requirement can be powered by the corresponding DC-DC circuit, and one or more output interfaces with the third voltage requirement can be powered by another corresponding DC-DC circuit, and so on. That is, the power supply device can directly power multiple output interfaces through the input interface to support high-voltage fast charging, and the power supply device can also power multiple DC-DC circuits through the input interface, thereby powering multiple output interfaces to support low-voltage slow charging in multiple gears. This device can flexibly allocate the supply voltage of the two output interfaces to support different charging scenarios. There is no need to distinguish between fast charging paths and non-fast charging paths, and the power provided by the power supply equipment can be better utilized.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0012] Figure 1 This is a circuit diagram of a one-to-two device in the prior art;

[0013] Figure 2 This is a circuit structure diagram of a one-to-many charging device;

[0014] Figure 3 This is the circuit schematic diagram of a one-to-many charging device. DETAILED DESCRIPTION

[0015] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0016] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0017] Reference Figure 2 and Figure 3 The utility model discloses a one-to-many charging device, comprising a main control module, an input interface, n DC-DC circuits, m output interfaces and m(n+1) switch circuits, wherein m-1≥n≥0, m≥3, and the main control module is electrically connected to the input interface. In charging applications, the input interface is electrically connected to a power supply device (adapter), the main control module communicates with the power supply device through the input interface to adjust the power supply device to output a voltage that complies with the charging protocol, and the output interface is electrically connected to a load. The input interface is electrically connected to the input ends of n DC-DC circuits respectively, and the n DC-DC circuits can output n charging voltages of different magnitudes; each of the output interfaces includes n+1 input ends, and each of the n+1 input ends is provided with a switch circuit, one input end of the output interface is electrically connected to the input interface through the corresponding switch circuit, and the remaining input ends are electrically connected to the output ends of the n DC-DC circuits through the corresponding switch circuits in a one-to-one correspondence; the main control module is electrically connected to m(n+1) switch circuits respectively, and the main control module communicates with m output interfaces respectively to obtain the power supply requirements at the corresponding output interfaces, thereby controlling the on-off state of the corresponding switch circuit, so that the corresponding output interface outputs a charging voltage of a corresponding magnitude.

[0018] The main control module can be a main control chip, or it can be a protocol chip 1 and a protocol chip 2 that communicate with each other. The protocol chip 1 obtains the information of the power supply device through the input interface and adjusts the power supply device to output a voltage that complies with the charging protocol. The protocol chip 2 is electrically connected to the m (n + 1) switch circuits respectively. The protocol chip 2 communicates with the m output interfaces respectively to obtain the power supply requirements of the corresponding loads at the output interfaces and control the on-off state of the corresponding switch circuits. The voltage output by the power supply device is generally high and suitable for fast charging. The DC-DC circuit is a BUCK circuit or a BUCK-BOOST circuit, which can convert the higher fast charging voltage output by the power supply device into a slow charging voltage that matches the power supply requirements at the output interface.

[0019] like Figure 3 , the n DC-DC circuits are BUCK[1], BUCK[2]…BUCK[n], the input interface is expressed as the main line, the output interface is expressed as the branch line, the m output interfaces are branch line 1, branch line 2…branch line m, the first gear charging voltage of fast charging is VBUS, and the charging voltages of n gears of slow charging are VOUT[1], VOUT[2]…VOUT[n]. The switch circuit includes a MOS tube, the G pole of the MOS tube is electrically connected to the protocol chip 2, the S pole of the MOS tube is electrically connected to the input end of the corresponding output interface, and the D pole of the MOS tube is electrically connected to the output end of the corresponding DC-DC circuit or the output end of the input interface. The m(n+1) MOS tubes are Q11, Q12…Q1(n+1) electrically connected to branch line 1, Q21, Q22…Q2(n+1) electrically connected to branch line 2, and Qm1, Qm2…Qm(n+1) electrically connected to branch line m.

[0020] That is, the input interface and n DC-DC circuits of this device can respectively supply power to m output interfaces. Since the charging voltage on the input interface and the charging voltage output by the n DC-DC circuits are different in size, multiple output interfaces can share the charging voltage on one input interface, or they can correspond to one DC-DC circuit respectively, which can meet the power supply requirements of different devices. When any two output interfaces are connected to the load at the same time, the output interface requiring the highest voltage can be directly connected to the power supply device through the input interface to obtain the highest charging voltage, and the output interface requiring the second gear voltage can be powered by the corresponding DC-DC circuit. Similarly, when any m output interfaces are connected to the load, one or more output interfaces requiring the highest voltage can be directly connected to the power supply device through the input interface to obtain the charging voltage, one or more output interfaces requiring the second gear voltage can be powered by the corresponding DC-DC circuit, and one or more output interfaces requiring the third gear voltage can be powered by another corresponding DC-DC circuit, and so on. That is, the power supply device can directly supply power to multiple output interfaces through the input interface to support high-voltage fast charging, and the power supply device can also supply power to multiple DC-DC circuits through the input interface, thereby supplying power to multiple output interfaces to support multi-gear low-voltage slow charging. This device can flexibly allocate the supply voltage of the two output interfaces to support different charging scenarios. There is no need to distinguish between fast charging paths and non-fast charging paths, and the power provided by the power supply equipment can be better utilized.

[0021] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0022] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A one-to-many charging device, characterized in that: include: A main control module, an input interface, n DC-DC circuits, m output interfaces and m(n+1) switch circuits, wherein m-1≥n≥0, m≥3, the main control module is electrically connected to the input interface, the input interface is electrically connected to the input ends of the n DC-DC circuits respectively, and the n DC-DC circuits can output n charging voltages of different sizes; Each of the output interfaces comprises n+1 input terminals, each of the n+1 input terminals is provided with a switch circuit, one input terminal of the output interface is electrically connected to the input interface through the corresponding switch circuit, and the remaining input terminals are electrically connected to the output terminals of the n DC-DC circuits in a one-to-one correspondence through the corresponding switch circuit; The main control module is electrically connected to the m(n+1) switch circuits respectively, and the main control module communicates with the m output interfaces respectively to obtain the power supply requirements at the corresponding output interfaces, thereby controlling the on-off state of the corresponding switch circuit so that the corresponding output interface outputs a charging voltage of a corresponding magnitude.

2. The one-to-many charging device according to claim 1, characterized in that: The DC-DC circuit is a BUCK circuit or a BUCK-BOOST circuit.

3. The one-to-many charging device according to claim 1, characterized in that: The input interface is electrically connected to the power supply device, the main control module communicates with the power supply device through the input interface to adjust the power supply device to output a voltage that complies with the charging protocol, and the output interface is electrically connected to the load.

4. The one-to-many charging device according to claim 3, characterized in that: The main control module includes a protocol chip 1 and a protocol chip 2 that communicate with each other. The protocol chip 1 obtains the information of the power supply device through the input interface and adjusts the power supply device to output a voltage that complies with the charging protocol. The protocol chip 2 is electrically connected to the m(n+1) switching circuits respectively. The protocol chip 2 communicates with the m output interfaces respectively to obtain the power supply requirements of the loads at the corresponding output interfaces and control the on-off state of the corresponding switching circuits.

5. The one-to-many charging device according to claim 4, characterized in that: The switch circuit includes a MOS tube, the G pole of the MOS tube is electrically connected to the protocol chip 2, the S pole of the MOS tube is electrically connected to the input end of the corresponding output interface, and the D pole of the MOS tube is electrically connected to the output end of the corresponding DC-DC circuit or the output end of the input interface.

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