Multi-port charging device and charger

Abstract

According to the multi-port charging device and the charger, on the basis of reducing the cost of the charger, the charging efficiency is improved, and multi-port simultaneous fast charging is achieved. The multi-port charging device comprises n charging ports, and n is greater than 2; the first converter and the second converter are used for supplying power to charging equipment; (2n-2) switch modules, the first converter is connected with the first charging port through a first branch circuit, the second converter is connected with each second charging port through a second branch circuit, the first branch circuit and the second branch circuit are respectively provided with one switch module, and one switch module is arranged between the two switch modules of the first branch circuit and each third branch circuit; the first charging port is one of the n charging ports, and the second charging port is any one of the n charging ports except the first charging port; and the switch control module is connected with the switch modules and the charging port, and is used for controlling the on-off of (2n-2) switch modules according to the condition that the charging port is inserted into the charging equipment so as to supply power to the inserted charging equipment through the converter.

Description

Technical Field

[0001] The present invention relates to the field of fast charging, and in particular to a multi-port charging device and a charger. Background Art

[0002] At present, fast charging power products are mainly single-C port or single-A port, and are mainly used as accessories for mobile phones, laptops and other devices. With the rapid development of various electronic products, single-port fast charging power products can no longer meet people's needs. Fast charging power products with multiple C ports and multiple A ports combined output have emerged, which can charge multiple electronic products at the same time and ensure the charging speed.

[0003] The existing multi-port charging solution is: the front stage uses the ACDC architecture to output a fixed voltage, and the back stage uses 2 to 3 DCDC buck converters and 1 to 2 fast charging protocol chips to achieve charging of multiple charging port combinations. In the existing technology, multiple ports are fast charged simultaneously by configuring multiple DCDC buck converters, which increases the cost of the charger. At the same time, due to the addition of the DCDC buck converter, the two-stage power conversion reduces the system efficiency. Summary of the invention

[0004] The present invention provides a multi-port charging device and a charger, which can improve the charging efficiency and realize multi-port simultaneous fast charging on the basis of reducing the cost of the charger.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: In a first aspect, the present invention provides a multi-port charging device, the multi-port charging device comprising n charging ports, where n is an integer greater than 2, including: The first converter and the second converter are used to supply power to a charging device inserted into the charging port; (2n-2) switch modules, the first converter is connected to the first charging port via a first branch, the second converter is connected to each second charging port via a second branch, a switch module is provided on the first branch and the second branch respectively, and a switch module is provided between the two switch modules of the first branch and each third branch; The first charging port is one of the n charging ports, the second charging port is any charging port of the n charging ports except the first charging port, and the third branch is any second branch of the (n-2) second branches; The switch control module is connected to each switch module and each charging port, and is used to control the on and off of (2n-2) switch modules according to the situation of charging devices being inserted into the n charging ports, so as to power the inserted charging devices through the converter.

[0006] In a possible implementation, the output power of the first converter is greater than the output power of the second converter; or, The output power of the first converter is equal to the output power of the second converter.

[0007] In a possible implementation, when a charging device is inserted into one of the n charging ports, the switch control module is specifically used to control the on and off of (2n-2) switch modules so that one converter supplies power to the charging device, or the first converter and the second converter simultaneously supply power to the charging device; When two of the n charging ports are plugged into charging devices, the switch control module is specifically used to control the on and off of (2n-2) switch modules so that the first converter and the second converter respectively supply power to the two charging devices; When three or more of the n charging ports are plugged into charging devices, the switch control module is specifically used to control the on and off of (2n-2) switch modules so that the first converter supplies power to one of the charging devices and the second converter supplies power to the other charging devices.

[0008] In a possible implementation, the multi-port charging device further includes a switch module.

[0009] The switch module is arranged between the first branch and two switch modules of the remaining second branches, and the remaining second branches are branches other than the (n-2) second branches among the (n-1) second branches.

[0010] In a possible implementation, the multi-port charging device further includes (n-2) switch modules; The connection point between the switch module arranged between the first branch and the two switch modules of each third branch and the third branch is a node, and the switch modules are respectively arranged between the node and the second charging port.

[0011] In a possible implementation, the switch module includes a first transistor and a second transistor; The first electrode of the first transistor and the first electrode of the second transistor are respectively connected to the switch control module; The second electrode of the first transistor is connected to the second electrode of the second transistor; The third electrode of the first transistor and the third electrode of the second transistor are connected to the converter and the charging port respectively.

[0012] In a possible implementation, the transistor is a MOS tube or a triode.

[0013] In a possible implementation, the n charging ports include n C ports; or, n charging ports include n A ports; or, The n charging ports include a combination of C port and A port.

[0014] In a second aspect, the present invention provides a multi-port charging device, the multi-port charging device comprising a first charging port and a second charging port, including: The first converter and the second converter are used to supply power to a charging device inserted into the charging port; 3 switch modules, the first converter is connected to the first charging port through a first branch, the second converter is connected to the second charging port through a second branch, a switch module is respectively provided on the first branch and the second branch, and a switch module is provided between the two switch modules of the first branch and the second branch; The switch control module is connected to each switch module and each charging port, and is used to control the on and off of the three switch modules according to the situation of the charging devices inserted into the first charging port and the second charging port, so as to supply power to the inserted charging devices through the converter.

[0015] In a possible implementation, the output power of the first converter is greater than the output power of the second converter; When a charging device is plugged into the first charging port or the second charging port, the switch control module is specifically used to control the on and off of the three switch modules so that the first converter supplies power to the charging device, or the first converter and the second converter simultaneously supply power to the charging device; When charging devices are inserted into both the first charging port and the second charging port, the switch control module is specifically used to control the on and off of the three switch modules so that the first converter and the second converter respectively supply power to the two charging devices.

[0016] In a third aspect, the present invention provides a charger, which may include the multi-port charging device of the first aspect and any possible implementation thereof, or may include the multi-port charging device of the second aspect and any possible implementation thereof.

[0017] The multi-port charging device provided by the present invention comprises n charging ports, where n is an integer greater than 2. By setting (2n-2) switch modules, the first converter and the second converter are connected to the n charging ports, so that the first converter is connected to one of the charging ports, the second converter is connected to the remaining (n-1) charging ports respectively, and the first converter is also connected to the remaining (n-2) charging ports respectively. The switch control module can control the on-off of the (2n-2) switch modules according to the situation that the n charging ports are plugged into the charging devices, so as to power the plugged-in charging devices through the first converter and / or the second converter to realize power distribution. In this way, the charging device is powered by the first converter and / or the second converter. Compared with the power supply of the ACDC with the DCDC buck converter in the prior art, there is no need to use the DCDC buck converter, which not only reduces the cost of the charger, but also does not need to perform DCDC conversion, thereby improving the charging efficiency. Moreover, by controlling the on-off of the (2n-2) switch modules to realize power distribution, it is possible to realize fast charging when any two charging ports are plugged into the charging devices at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A circuit principle block diagram of a multi-port charging device provided for related technology; Figure 2 Another circuit principle block diagram of a multi-port charging device provided in the related art; Figure 3 A circuit principle block diagram of a multi-port charging device provided by an embodiment of the present invention; Figure 4 A schematic diagram of a three-port charging device provided by an embodiment of the present invention; Figure 5 A schematic diagram of a four-port charging device provided by an embodiment of the present invention; Figure 6 A schematic diagram of another three-port charging device provided by an embodiment of the present invention; Figure 7 A schematic diagram of another three-port charging device provided by an embodiment of the present invention; Figure 8 A circuit principle block diagram of a dual-port charging device provided by an embodiment of the present invention; Fig. 9 A schematic diagram of a dual-port charging device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, the use of "based on" or "according to" means openness and inclusiveness, because the process, steps, calculations or other actions "based on" or "according to" one or more of the conditions or values ​​may be based on additional conditions or values ​​beyond the described values ​​in practice.

[0021] The fast charging protocol is a faster, more efficient and safer way to charge mobile devices. Through protocol standardization and technical optimization, devices can be charged in a shorter time to meet users' needs for fast charging.

[0022] With the rapid development of fast charging protocols, various types of fast charging protocols have been extended. Among them, the power transmission (USB Power Delivery, USB PD) protocol has gradually become the mainstream of fast charging protocols due to its advantages such as convenient interface, protocol compatibility and higher power limit.

[0023] In the related technology, the multi-port charging solution of the PD charger is: the front stage uses the ACDC architecture to output a fixed voltage, and the back stage uses 2 to 3 DCDC step-down converters and 1 to 2 PD protocol chips to realize charging of multiple charging port combinations. Figure 1 and Figure 2 The following is a circuit principle block diagram of two PD chargers in the related art.

[0024] like Figure 1 As shown in the figure, the PD charger includes three charging ports, namely C1, C2 and A. Among them, when the C2 port and the A port are plugged into the charging device at the same time, the two charging devices are powered by the 5V voltage output by the same DCDC buck converter, and the two charging devices cannot be fast charged at the same time.

[0025] like Figure 2 As shown, in Figure 1 On this basis, a DCDC step-down converter is added to achieve simultaneous fast charging of any two charging devices, but this will increase the cost of the charger.

[0026] In order to improve charging efficiency and realize fast charging of multiple ports at the same time while reducing the cost of the charger, the embodiment of the present invention provides a multi-port charging device and a charger, which supplies power to the charging device through the first converter and / or the second converter without using a DCDC buck converter, which not only reduces the cost of the charger, but also eliminates the need for DCDC conversion, thereby improving charging efficiency. Moreover, by controlling the on and off of (2n-2) switch modules to realize power distribution, fast charging of any two charging ports simultaneously plugged into the charging device can be realized.

[0027] Figure 3 This is a circuit diagram of a multi-port charging device provided by an embodiment of the present invention. Figure 3 As shown, the multi-port charging device may include: n charging ports 31 , a first converter 32 , a second converter 33 , (2n−2) switch modules 34 and a switch control module 35 .

[0028] Wherein, n is an integer greater than 2, and is respectively charging port 1, charging port 2, ..., charging port n. It is understandable that in practical applications, the n charging ports may include n USB Type-C charging ports, referred to as C ports. Alternatively, the n charging ports may include n USB Type-A charging ports, referred to as A ports. Alternatively, the n charging ports may include a combination of C ports and A ports. The embodiment of the present invention does not specifically limit the types of the n charging ports, and different types of charging ports can be set according to actual needs to meet the needs of different users.

[0029] The first converter 32 and the second converter 33 are used to supply power to the charging device inserted into the charging port 31. It is understandable that in the embodiment of the present invention, the first converter 32 and the second converter 33 can be ACDC or DCDC. Especially for the multi-port charging device of ACDC, the multi-channel DCDC buck converter is omitted, which not only reduces the cost of the charger, but also eliminates the need for DCDC conversion, thereby improving the charging efficiency.

[0030] (2n-2) switch modules 34, the first converter 32 is connected to the first charging port through a first branch, the second converter 33 is connected to each second charging port through a second branch, a switch module is set on the first branch and the second branch respectively, and a switch module is set between the two switch modules of the first branch and each third branch. That is to say, a switch module S1 is set on a first branch, (n-1) switch modules are set on the (n-1) second branches, namely S2, S3, ..., Sn, and (n-2) switch modules are set between the first branch and the two switch modules of the (n-2) second branches, namely S11, S12, ..., S1 (n-2), a total of (2n-2) switch modules.

[0031] The first charging port is one of the n charging ports, the second charging port is any charging port among the n charging ports except the first charging port, and the third branch is any second branch among the (n-2) second branches.

[0032] The switch control module 35 is connected to each switch module and each charging port, and is used to control the on and off of (2n-2) switch modules according to the situation of the charging devices being inserted into the n charging ports, so as to power the inserted charging devices through the converter, namely the first converter 32 and / or the second converter 33.

[0033] It should be noted that the embodiment of the present invention introduces a multi-port charging device by taking two converters as an example. Of course, the multi-port charging device may also include three or more converters to achieve simultaneous fast charging of any three or more ports. The implementation principle is the same and will not be repeated.

[0034] The multi-port charging device provided by the present invention comprises n charging ports, where n is an integer greater than 2. By setting (2n-2) switch modules, the first converter and the second converter are connected to the n charging ports, so that the first converter is connected to one of the charging ports, the second converter is connected to the remaining (n-1) charging ports respectively, and the first converter is also connected to the remaining (n-2) charging ports respectively. The switch control module can control the on-off of the (2n-2) switch modules according to the situation that the n charging ports are plugged into the charging devices, so as to power the plugged-in charging devices through the first converter and / or the second converter to realize power distribution. In this way, the charging device is powered by the first converter and / or the second converter. Compared with the power supply of the ACDC with the DCDC buck converter in the prior art, there is no need to use the DCDC buck converter, which not only reduces the cost of the charger, but also does not need to perform DCDC conversion, thereby improving the charging efficiency. Moreover, by controlling the on-off of the (2n-2) switch modules to realize power distribution, it is possible to realize fast charging when any two charging ports are plugged into the charging devices at the same time.

[0035] Optionally, the switch module 34 may include: two switches connected in series.

[0036] In a possible implementation manner, the two switches may be a first transistor and a second transistor respectively.

[0037] The first electrode of the first transistor and the first electrode of the second transistor are connected to the switch control module 35 respectively.

[0038] The second electrode of the first transistor is connected to the second electrode of the second transistor.

[0039] The third electrode of the first transistor and the third electrode of the second transistor are connected to the converter and the charging port respectively.

[0040] Among them, the third pole of the first transistor and the third pole of the second transistor on the first branch are connected to the first converter 32 and the first charging port, respectively. The third pole of the first transistor and the third pole of the second transistor on the second branch are connected to the second converter 33 and the second charging port, respectively. In the switch module set between the two switch modules of the first branch and the second branch, the third pole of the first transistor and the third pole of the second transistor are connected to the first converter 32 and the second charging port, respectively.

[0041] It is understandable that the above transistor can be a MOS tube, such as PMOS or NMOS, or can be a triode, or can also be a switch in other forms, which is not limited in the embodiment of the present invention. If the first transistor and the second transistor are both MOS tubes, the body diodes of the two MOS tubes form a back-to-back structure.

[0042] Exemplarily, if the first transistor and the second transistor are both PMOS, PM1 and PM2 respectively, then the gate of PM1 and the gate of PM2 are both connected to the switch control module 35, the source of PM1 and the source of PM2 are connected, the drain of PM1 is connected to the converter, and the drain of PM2 is connected to the charging port.

[0043] For another example, if the first transistor and the second transistor are both NMOS, NM1 and NM2 respectively, then the gate of NM1 and the gate of NM2 are both connected to the switch control module 35, the drain of NM1 and the drain of NM2 are connected, the source of NM1 is connected to the converter, and the source of NM2 is connected to the charging port. Of course, in this case, the source of NM1 and the source of NM2 can also be connected, the drain of NM1 is connected to the converter, and the drain of NM2 is connected to the charging port. In short, the places where the two transistors are connected to each other are the second poles of the two transistors, and the third poles of the two transistors are connected to the converter at one end and the charging port at the other end. Whether the two NMOS are connected together at the source or the drain can be set according to the actual situation, and the embodiment of the present invention is not specifically limited here.

[0044] It should be noted that, in the embodiment of the present invention, in order to further reduce the cost of the charger, the switch module provided on the first branch may include only one switch. And for the (n-1) second branches, the switch module provided on the remaining second branch except the (n-2) second branch (i.e., except the second branch provided with the switch module between the first branch and the second branch) may also include only one switch, and the remaining switch modules still include two switches.

[0045] Optionally, in the embodiment of the present invention, the output power of the first converter may be greater than the output power of the second converter. Alternatively, the output power of the first converter may be equal to the output power of the second converter.

[0046] Optionally, in the embodiment of the present invention, based on the magnitude relationship between the output powers of the first converter and the second converter, the control of the (2n-2) switch modules by the switch control module may include the following situations.

[0047] When only one of the n charging ports 31 is plugged into a charging device, the switch control module 35 is specifically used to control the on and off of (2n-2) switch modules 34 so that the converter supplies power to the charging device, that is, the converter outputs full power, thereby achieving fast charging. Alternatively, the switch control module 35 is specifically used to control the on and off of (2n-2) switch modules 34 so that the first converter 32 and the second converter 33 simultaneously supply power to the charging device.

[0048] It is understandable that in the case where only one charging device is inserted into the multi-port charging device, whether it is powered by one converter (the first converter or the second converter) or by two converters can be set in advance according to actual needs. The simultaneous power supply of two converters is usually suitable for application scenarios with large output power of the charging port. By supplying power simultaneously by two converters, the output power of the converter can be maximized, greatly reducing power waste.

[0049] When two of the n charging ports 31 are plugged into charging devices, the switch control module 35 is specifically configured to control the on and off of (2n-2) switch modules 34 so that the first converter 32 and the second converter 33 respectively supply power to the two charging devices.

[0050] In this way, two charging devices are powered by two converters respectively, so that the two charging devices can be fast charged at the same time.

[0051] It is worth noting that in the embodiment of the present invention, when charging devices are plugged into any two of the n charging ports, the output power of the two charging ports will be distributed in order to keep the total power output of the system unchanged.

[0052] In addition, in an embodiment of the present invention, when the types of the two charging ports inserted into the charging device are different and the output powers of the two converters are different (the output power of the first converter is greater than the output power of the second converter), the power supply mode of the converter is different. In a specific implementation, when the two charging ports inserted into the charging device are both C ports, the two converters respectively power the two charging devices. When the two charging ports inserted into the charging device are one C port and one A port respectively, the first converter powers the charging device of the C port, and the second converter powers the charging device of the A port.

[0053] When three or more of the n charging ports 31 are plugged into charging devices, the switch control module 35 is specifically used to control the on and off of (2n-2) switch modules 34 so that the first converter 32 supplies power to one of the charging devices and the second converter 33 supplies power to the other charging devices, that is, the other charging devices share the output voltage of the second converter.

[0054] It is understandable that the above-mentioned first converter usually supplies power to the charging port with larger output power. In this way, by preferentially allocating high power to the charging port with larger output power or the main charging port, the output power can be reasonably allocated, and the charging efficiency can be improved when two charging devices are fast charged at the same time.

[0055] For example, Figure 4 Schematic diagram of a three-port charging device provided by an embodiment of the present invention. Figure 4As shown, the three-port charging device may include: three charging ports, a first converter, a second converter, four switch modules, and a switch control module. It is assumed that the three charging ports include two C ports and one A port, namely C1, C2 and A. Among the four switch modules, a switch module S1 is arranged on the first branch between the first converter and the first charging port C1, and the switch module S1 includes a PMOS PM1; a switch module S2 is arranged on the second branch between the second converter and the second charging port C2, and the switch module S2 includes two PMOS, PM2 and PM3; a switch module S3 is arranged on the second branch between the second converter and the second charging port A, and the switch module S3 includes a PMOS, PM4; a switch module S11 is arranged between the switch module S1 of the first branch and the switch module S2 of the second branch, and the switch module S11 includes two PMOS, PM5 and PM6.

[0056] like Figure 4 As shown, the switch control module is connected to ports C1, C2, and A respectively, and is also connected to the gates of the switch modules S1, S2, S3, and S11.

[0057] The source of PM1 in S1 is connected to the first converter, and the drain of PM1 is connected to the C1 port.

[0058] The source of PM2 in S2 is connected to the source of PM3, the drain of PM2 is connected to the second converter, and the drain of PM3 is connected to the C2 port.

[0059] The source of PM4 in S3 is connected to port A, and the drain of PM4 is connected to the second converter.

[0060] The source of PM5 in S11 is connected to the source of PM6, the drain of PM5 is connected to the first converter, and the drain of PM6 is connected to the C2 port.

[0061] based on Figure 4 Assuming that the output power of the first converter is greater than the output power of the second converter, then according to the situation that the three charging ports are plugged into charging devices, the specific implementation of the switch control module controlling the four switch modules can be shown in Table 1.

[0062] Table 1

[0063] Among them, Attach means that a charging device is connected, and Detach means that no charging device is connected. ON means that the switch module is turned on, and OFF means that the switch module is turned off.

[0064] In addition, if Figure 4As shown, assuming that the maximum power output by the first converter is 65W and the maximum power output by the second converter is 22.5W, the output power of each charging port under different control modes of the switch module is as shown in Table 2.

[0065] Table 2

[0066] For another example, Figure 5 Schematic diagram of a four-port charging device provided by an embodiment of the present invention. Figure 5 As shown, the four-port charging device may include: four charging ports, a first converter, a second converter, six switch modules, and a switch control module. Figure 5 As shown, it is assumed that the four charging ports include three C ports and one A port, namely C1, C2, C3 and A. The six switch modules include: S1 on the first branch, S2, S3, S4 on each second branch, and S11 and S12 between the first branch and the second branch. The connection relationship of each device in the four-port charging device is as follows Figure 4 As shown, no further description is given here.

[0067] based on Figure 5 Assuming that the output power of the first converter is greater than the output power of the second converter, then according to the situation that the four charging ports are plugged into charging devices, the specific implementation of the switch control module controlling the six switch modules can be shown in Table 3.

[0068] Table 3

[0069] It is understandable that the power allocation principle of the four charging ports is similar to the power allocation principle of the above-mentioned three charging ports. Please refer to the above description and will not be repeated here.

[0070] Optionally, in an embodiment of the present invention, the multi-port charging device may further include: (n-2) switch modules.

[0071] Among them, the connection point between the switch module set between the first branch and the two switch modules of each third branch and the third branch is a node, and the switch module is respectively arranged between the node and the second charging port. That is to say, a switch module is arranged between the switch module between the first branch and each third branch and the second charging port. The switch module may include one switch or two switches. You can refer to the description of the aforementioned switch module and will not repeat it here. In order to save the cost of the multi-port charging device, the switch module usually includes one switch. For example, the multi-port charging device may also include (n-2) switch modules, namely S21, S22,..., S2 (n-2).

[0072] In this way, when only one of the n charging ports 31 is plugged into a charging device, and the first converter 32 and the second converter 33 simultaneously supply power to the charging device, by setting S21, S22, ..., S2 (n-2), current backflow can be prevented, that is, the first converter and the second converter are prevented from outputting power to other charging ports into which no charging device is plugged, thereby avoiding damage to the charging port.

[0073] Exemplary, reference Figure 4 , Figure 6 A schematic diagram of another three-port charging device provided in an embodiment of the present invention. Figure 6 exist Figure 4 A switch module S21 is added on this basis, and the switch module S21 includes a PMOS, PM7.

[0074] like Figure 6 As shown, the switch control module is also connected to the gate of S21.

[0075] The source of PM7 is connected to the drain of PM6 and the drain of PM3, and the drain of PM7 is connected to the C2 port.

[0076] based on Figure 6 Assuming that the output power of the first converter is greater than the output power of the second converter, and when a single port is plugged into a charging device, the first converter and the second converter supply power simultaneously, then according to the situation that three charging ports are plugged into charging devices, the specific implementation of the switch control module controlling the five switch modules can be shown in Table 4.

[0077] Table 4

[0078] It should be noted that the power allocation principle in this case is the same as Figure 4 The power allocation principle in is the same as that in the embodiment, and the power allocation result shown in Table 2 can be achieved, which will not be repeated here.

[0079] Optionally, in the embodiment of the present invention, the multi-port charging device may further include a switch module.

[0080] The switch module is arranged between the first branch and the two switch modules of the remaining second branches, and the remaining second branches are the branches of the (n-1) second branches except the aforementioned (n-2) second branches. In other words, a switch module is arranged between the first branch and the two switch modules of each second branch. The specific description of the switch module is not repeated here.

[0081] It is understandable that this situation is applicable to the scenario where the output power of each of the n charging ports is relatively large. By setting a switch module between the two switch modules of the first branch and each of the second branches, the output power of the converter can be reasonably distributed, thereby further improving the charging efficiency.

[0082] In addition, in this case, when a single port is plugged into a charging device, power is supplied by the first converter.

[0083] Correspondingly, in this case, a switch module is provided between the switch module between the first branch and each second branch and the second charging port to prevent current backflow and avoid damage to the charging port.

[0084] Exemplary, reference Figure 4 , Figure 7 A schematic diagram of another three-port charging device provided in an embodiment of the present invention. The three charging ports of the three-port charging device are C1, C2 and C3. Figure 7 A switch module S31 is also added, and the switch module S31 includes two PMOSs, PM8 and PM9.

[0085] refer to Figure 7 , the switch control module is also connected to the gate of S31.

[0086] The source of PM8 is connected to the source of PM9, the drain of PM8 is connected to the first converter, and the drain of PM9 is connected to the C3 port.

[0087] based on Figure 7 Assuming that the output power of the first converter is greater than the output power of the second converter, then according to the situation that the three charging ports are plugged into charging devices, the specific implementation of the switch control module controlling the five switch modules can be shown in Table 5.

[0088] Table 5

[0089] It should be noted that the power allocation principle in this case is the same as Figure 4 The power distribution principle is the same as in Table 2, which will not be repeated here. The only difference from Table 2 is that when the C3 port is plugged into a charging device, the power output by the first converter to the C3 port is 65W.

[0090] Optionally, in an embodiment of the present invention, Figure 8 This is a circuit diagram of another multi-port charging device provided by an embodiment of the present invention. Figure 8 As shown, the multi-port charging device may include: a first charging port 81 , a second charging port 82 , a first converter 83 , a second converter 84 , three switch modules 85 and a switch control module 86 .

[0091] The first converter 83 and the second converter 84 are used to supply power to the charging device inserted into the charging port. The output power of the first converter and the second converter is different.

[0092] Three switch modules 85, the first converter 83 is connected to the first charging port 81 through a first branch, the second converter 84 is connected to the second charging port 82 through a second branch, a switch module is respectively set on the first branch and the second branch, and a switch module is set between the two switch modules of the first branch and the second branch.

[0093] The switch control module 86 is connected to each switch module 85 and each charging port, and is used to control the on and off of the three switch modules according to the situation of the charging device being inserted into the first charging port 81 and the second charging port 82, so as to power the inserted charging device through the converter.

[0094] It can be understood that the first charging port and the second charging port can both be C ports, can both be A ports, or can be one C port and one A port, which is not specifically limited in the embodiment of the present invention.

[0095] In this way, the charging device is powered by the first converter and / or the second converter. Compared with the prior art of powering with ACDC and DCDC buck converter, there is no need to use a DCDC buck converter, which not only reduces the cost of the charger, but also does not require DCDC conversion, thereby improving the charging efficiency. Moreover, by controlling the on and off of the three switch modules to achieve power distribution, fast charging can be achieved when two charging ports are plugged into the charging device at the same time.

[0096] Optionally, in an embodiment of the present invention, the output power of the first converter 83 is greater than the output power of the second converter 84 .

[0097] When a charging device is inserted into the first charging port 81 or the second charging port 82, the switch control module 86 is specifically used to control the on and off of the three switch modules 85 so that the first converter 83 supplies power to the charging device, or the first converter 83 and the second converter 84 supply power to the charging device at the same time.

[0098] When charging devices are both inserted into the first charging port 81 and the second charging port 82 , the switch control module 86 is specifically used to control the on and off of the three switch modules 85 so that the first converter 83 and the second converter 84 respectively supply power to the two charging devices.

[0099] For example, Fig. 9 Schematic diagram of a dual-port charging device provided by an embodiment of the present invention. Fig. 9As shown, the two charging ports of the dual-port charging device are port C and port A, and the three switch modules are S1, S2 and S11. Among them, S1 includes one PMOS, and S2 and S11 each include two PMOS.

[0100] When only a charging device is connected to port C, S1 is turned on, S2 and S11 are turned off, and the first converter supplies power to the charging device.

[0101] When only a charging device is connected to port A, S1 and S2 are turned off, S11 is turned on, and the first converter supplies power to the charging device.

[0102] When charging devices are connected to ports C and A at the same time, S1 and S2 are turned on, S11 is turned off, the first converter supplies power to the charging device plugged into port C, and the second converter supplies power to the charging device plugged into port A, thereby achieving maximum power fast charging.

[0103] The embodiment of the present invention further provides a charger, which may include: Figure 3-Figure 9 Any multi-port charging device.

[0104] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multi-port charging device, comprising n charging ports, where n is an integer greater than 2, characterized in that: include: A first converter and a second converter, for supplying power to a charging device plugged into the charging port; (2n-2) switch modules, the first converter is connected to the first charging port via a first branch, the second converter is connected to each second charging port via a second branch, one switch module is provided on each of the first branch and the second branch, and one switch module is provided between the two switch modules of the first branch and each of the third branches; Wherein, the first charging port is one of the n charging ports, the second charging port is any charging port of the n charging ports except the first charging port, and the third branch is any second branch of the (n-2) second branches; The switch control module is connected to each of the switch modules and each charging port, and is used to control the on and off of (2n-2) switch modules according to the situation of charging devices being inserted into the n charging ports, so as to power the inserted charging devices through the converter.

2. The multi-port charging device according to claim 1, characterized in that: The output power of the first converter is greater than the output power of the second converter; or, The output power of the first converter is equal to the output power of the second converter.

3. The multi-port charging device according to claim 2, characterized in that: When a charging device is inserted into one of the n charging ports, the switch control module is specifically used to control the on and off of (2n-2) switch modules so that one converter supplies power to the charging device, or the first converter and the second converter simultaneously supply power to the charging device; When two of the n charging ports are plugged into charging devices, the switch control module is specifically used to control the on and off of (2n-2) switch modules so that the first converter and the second converter respectively supply power to the two charging devices; When three or more of the n charging ports are plugged into charging devices, the switch control module is specifically configured to control the on and off of (2n-2) switch modules so that the first converter supplies power to one of the charging devices and the second converter supplies power to the other charging devices.

4. The multi-port charging device according to any one of claims 1 to 3, characterized in that: The multi-port charging device also includes a switch module; The switch module is arranged between the first branch and two switch modules of the remaining second branches, and the remaining second branches are branches among the (n-1) second branches except the (n-2) second branches.

5. The multi-port charging device according to any one of claims 1 to 3, characterized in that: The multi-port charging device also includes (n-2) switch modules; The connection point between the switch module arranged between the first branch and the two switch modules of each of the third branches and the third branch is a node, and the switch modules are respectively arranged between the node and the second charging port.

6. The multi-port charging device according to any one of claims 1 to 3, characterized in that: The switch module includes a first transistor and a second transistor; The first electrode of the first transistor and the first electrode of the second transistor are respectively connected to the switch control module; The second electrode of the first transistor is connected to the second electrode of the second transistor; The third electrode of the first transistor and the third electrode of the second transistor are connected to the converter and the charging port respectively.

7. The multi-port charging device according to any one of claims 1 to 3, characterized in that: n charging ports include n C ports; or, n charging ports include n A ports; or, The n charging ports include a combination of C port and A port.

8. A multi-port charging device, comprising a first charging port and a second charging port, characterized in that: include: A first converter and a second converter, for supplying power to a charging device plugged into the charging port; 3 switch modules, the first converter is connected to the first charging port through a first branch, the second converter is connected to the second charging port through a second branch, one switch module is respectively provided on the first branch and the second branch, and one switch module is provided between the two switch modules of the first branch and the second branch; The switch control module is connected to each of the switch modules and each charging port, and is used to control the on and off of the three switch modules according to the situation of the charging devices inserted into the first charging port and the second charging port, so as to power the inserted charging devices through the converter.

9. The multi-port charging device according to claim 8, characterized in that: The output power of the first converter is greater than the output power of the second converter; When a charging device is inserted into the first charging port or the second charging port, the switch control module is specifically used to control the on and off of the three switch modules so that the first converter supplies power to the charging device, or the first converter and the second converter simultaneously supply power to the charging device; When charging devices are inserted into both the first charging port and the second charging port, the switch control module is specifically used to control the on and off of the three switch modules so that the first converter and the second converter respectively supply power to the two charging devices.

10. A charger, characterized in that: The charger comprises the multi-port charging device according to any one of claims 1-7, or comprises the multi-port charging device according to any one of claims 8-9.

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