Low-cost quick charging device for realizing independent quick charging of any two interfaces of multiple interfaces through two paths of DC-DC (Direct Current-Direct Current)

Abstract

The utility model provides a low-cost fast charging device capable of realizing independent fast charging of any two interfaces of multiple interfaces through two paths of DC-DC. The low-cost fast charging device comprises a plurality of interfaces, a first BUCK-BOOST module, a second BUCK-BOOST module, a BAT power supply module, a control module and switch modules, wherein the number of the switch modules is consistent with that of the interfaces. Wherein the switch modules are connected with the interfaces in a one-to-one correspondence manner, the first BUCK-BOOST module and the second BUCK-BOOST module are connected with the interfaces through the switch modules, the BAT power supply module is respectively connected with the first BUCK-BOOST module and the second BUCK-BOOST module, and the control module is respectively connected with the control ends of the switch modules. Therefore, the function of independent quick charging of any two interfaces in the three interfaces can be realized, and the purposes of improving user experience, meeting user use requirements and improving product competitiveness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile power supplies, in particular to a low-cost fast charging device that realizes independent fast charging of any two interfaces among multiple interfaces through two DC-DCs. Background Art

[0002] With the development of mobile intelligent devices and the increase of people's demands, it is inevitable to carry many electronic products when going out, such as laptops, tablets, smartphones, cameras, wireless earphones, etc. In real life, the situation of multiple devices needing to be charged is often faced. At the same time, different electronic products have different required charging voltages, which makes the demand for multi-port independent fast charging increase day by day. At present, the existing products in the mobile device charging industry that adopt the architecture of two DC-DCs with three interfaces can only realize the function of independent fast charging of two determined interfaces among the three interfaces, and cannot realize the function of independent fast charging of any two interfaces among the three interfaces, making it difficult to meet the needs of users. See Figure 1 , Figure 1 which is a schematic diagram of the existing solution that adopts the architecture of two DC-DCs with three interfaces. This existing solution consists of a BAT power module, a BUCK-BOOST module 1, a BUCK-BOOST module 2, a protocol IC module 1, a protocol IC module 2, and three 5-20V input-output interface modules. The circuit principle of this solution is relatively simple, but it cannot realize the function of independent fast charging of any two interfaces among the three interfaces by switching the input-output path, making it difficult to meet the needs of users. Summary of the Utility Model

[0003] The low-cost fast charging device and control method that realizes independent fast charging of any two interfaces among multiple interfaces through two DC-DCs provided by the utility model are mainly used to solve the problem that the existing products that adopt the architecture of two DC-DCs with three interfaces cannot realize independent fast charging of any two interfaces among the three interfaces and are difficult to meet the needs of users.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] Comprising: a plurality of interfaces, a first BUCK-BOOST module, a second BUCK-BOOST module, a BAT power supply module, a control module, and switch modules that are equal in number to the interfaces; wherein, the switch modules are respectively and correspondingly connected to the interfaces, the first BUCK-BOOST and the second BUCK-BOOST modules are connected to the interfaces through the respective switch modules, the BAT power supply module is respectively connected to the first BUCK-BOOST module and the second BUCK-BOOST module, and the control module is respectively connected to the control ends of the respective switch modules, and is configured to control the conduction or cut-off of multiple switches in the respective switch modules according to the load of each interface or the access state of a charging device, so as to switch and connect the connection paths between the first BUCK-BOOST module, the second BUCK-BOOST module and each interface.

[0006] It can be seen that through the optimized design of the circuit structure, the control module enables the device to simply control the conduction or cut-off of the corresponding switches under different access states of the load or the charging device, so as to cleverly switch and connect different connection paths, enabling the device to switch between the mobile power supply working mode and the adapter working mode. Furthermore, in the mobile power supply working mode, the function of independent fast charging for any two of the three interfaces can be realized, and in the adapter working mode, the functions of fast charging output for a single port or shared output for two ports and fast charging of the BAT power supply module can be realized. Compared with the existing solution that adopts a two-way DC-DC and three-interface architecture and can only realize the function of independent fast charging for two determined interfaces among the three interfaces, the present utility model can realize the function of independent fast charging for any two of the three interfaces by switching the input and output paths of the two-way DC-DC, achieving the purpose of improving the user experience, meeting the user's usage requirements, and enhancing the product competitiveness.

[0007] According to a low-cost fast charging device for realizing independent fast charging of any two of multiple interfaces through two-way DC-DC provided by the present utility model, the number of interfaces is 3, including a first input / output interface, a second input / output interface, and a third input / output interface. The 3 input / output ports are all TYPE-C interface modules, and are configured to detect the insertion and extraction states of the load or the charging device on the TYPE-C interface.

[0008] According to a low-cost fast charging device provided by the present utility model for realizing independent fast charging between any two of multiple interfaces through two DC-DCs, the switching module includes a first switching module, a second switching module, and a third switching module; the first switching module includes a third switch and a fifth switch; the second switching module includes a fourth switch and a second switch; the third switching module includes a first switch and a sixth switch; the first BUCK-BOOST module is connected to the third input / output interface through the first switch, the first BUCK-BOOST module is connected to the second input / output interface through the second switch, and the first BUCK-BOOST module is connected to the first input / output interface through the third switch; the second BUCK-BOOST module is connected to the second input / output interface through the fourth switch, the second BUCK-BOOST module is connected to the third input / output interface through the sixth switch, and the second BUCK-BOOST module is connected to the first input / output interface through the fifth switch, or the second BUCK-BOOST module is connected to the first input / output interface through the fifth switch and the third switch.

[0009] According to a low-cost fast charging device provided by the present utility model for realizing independent fast charging between any two of multiple interfaces through two DC-DCs, the first BUCK-BOOST module is connected to the control module, the second BUCK-BOOST module is connected to the control module, and the control module is used to configure the working states of the first BUCK-BOOST module and the second BUCK-BOOST module according to the input / output protocols of each interface.

[0010] According to a low-cost fast charging device provided by the present utility model for realizing independent fast charging between any two of multiple interfaces through two DC-DCs, the first input / output interface is used to connect to a load. The control module controls the third switch to conduct, so that the output voltage of the BAT power module is regulated by the first BUCK-BOOST module and then output to the first input / output interface; the second input / output interface is used to connect to a load. The control module controls the fourth switch to conduct, so that the output voltage of the BAT power module is regulated by the second BUCK-BOOST module and then output to the second input / output interface; the third input / output interface is used to connect to a load. The control module controls the sixth switch to conduct, so that the output voltage of the BAT power module is regulated by the second BUCK-BOOST module and then output to the third input / output interface.

[0011] According to a low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces through two DC-DCs provided by the present utility model, the second input / output interface and the third input / output interface are used to connect to a load. The control module controls the second switch and the sixth switch to conduct, so that the output voltage of the BAT power module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the second input / output interface and the third input / output interface; or, the first input / output interface and the third input / output interface are used to connect to a load. The control module controls the third switch and the sixth switch to conduct, so that the output voltage of the BAT power module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the first input / output interface and the third input / output interface; or, the first input / output interface and the second input / output interface are used to connect to a load. The control module controls the third switch and the fourth switch to conduct, so that the output voltage of the BAT power module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the first input / output interface and the second input / output interface.

[0012] According to a low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces through two DC-DCs provided by the present utility model, the first input / output interface is used to connect to an adapter. The control module controls the third switch to conduct, so that the input voltage of the first input / output interface is regulated by the first BUCK-BOOST module and then output to the BAT power module; the second input / output interface is used to connect to an adapter. The control module controls the fourth switch to conduct, so that the input voltage of the second input / output interface is regulated by the second BUCK-BOOST module and then output to the BAT power module; the third input / output interface is used to connect to an adapter. The control module controls the sixth switch to conduct, so that the input voltage of the third input / output interface is regulated by the second BUCK-BOOST module and then output to the BAT power module, realizing fast charging of the BAT power module.

[0013] According to a low-cost fast charging device provided by the present utility model, which realizes independent fast charging of any two interfaces among multiple interfaces through two DC-DCs, the first input / output interface, the second input / output interface, and the third input / output interface are all used to connect to loads. The control module controls the third switch to conduct, so that the output voltage of the BAT power module is regulated by the first BUCK-BOOST module and then output to the first input / output interface. The control module controls the fourth switch and the sixth switch to conduct, so that the output voltage of the BAT power module is regulated by the second BUCK-BOOST module and then output to the second input / output interface and the third input / output interface.

[0014] According to a low-cost fast charging device provided by the present utility model, which realizes independent fast charging between any two interfaces through two DC-DCs, the first input / output interface is used to connect to an adapter, and the second input / output interface is used to connect to a load. The control module connects the load to the adapter by controlling the third switch and the second switch to conduct, so that the load can apply for the required voltage from the adapter. At the same time, the voltage output by the adapter is regulated by the first BUCK-BOOST module and then output to the BAT power module; or, the second input / output interface is used to connect to an adapter, and the first input / output interface is used to connect to a load. The control module connects the load to the adapter by controlling the fourth switch, the fifth switch, and the third switch to conduct, so that the load can apply for the required voltage from the adapter. At the same time, the voltage output by the adapter is regulated by the second BUCK-BOOST module and then output to the BAT power module; or, the first input / output interface is used to connect to an adapter, and the third input / output interface is used to connect to a load. The control module connects the load to the adapter by controlling the third switch and the first switch to conduct, so that the load can apply for the required voltage from the adapter. At the same time, the voltage output by the adapter is regulated by the first BUCK-BOOST module and then output to the BAT power module; or, the third input / output interface is used to connect to an adapter, and the first input / output interface is used to connect to a load. The control module connects the load to the adapter by controlling the sixth switch, the fifth switch, and the third switch to conduct, so that the load can apply for the required voltage from the adapter. At the same time, the voltage output by the adapter is regulated by the second BUCK-BOOST module and then output to the BAT power module; or, the second input / output interface is used to connect to an adapter, and the third input / output interface is used to connect to a load. The control module connects the fourth switch and the sixth switch to conduct, so that the input voltage of the second input / output interface is regulated by the load connected to the third input / output interface and then output to the third input / output interface. At the same time, it is regulated by the second BUCK-BOOST module and then output to the BAT power module; or, the third input / output interface is used to connect to an adapter, and the second input / output interface is used to connect to a load. The control module connects the sixth switch and the fourth switch to conduct, so that the input voltage of the third input / output interface is regulated by the load connected to the second input / output interface and then output to the second input / output interface. At the same time, it is regulated by the second BUCK-BOOST module and then output to the BAT power module.

[0015] A low-cost fast charging device that realizes independent fast charging between any two interfaces of multiple interfaces through two DC-DCs according to the present utility model. The first input / output interface is used to connect to an adapter, and the second input / output interface and the third input / output interface are both used to connect to loads. The control module makes the input voltage of the first input / output interface output to the BAT power module after voltage regulation by the first BUCK-BOOST module by controlling the third switch, the fourth switch, and the sixth switch to conduct, and at the same time makes the output voltage of the BAT power module output to the second input / output interface and the third input / output interface after voltage regulation by the second BUCK-BOOST module; or, the second input / output interface is used to connect to an adapter, and the first input / output interface and the third input / output interface are both used to connect to loads. The control module makes the input voltage of the second input / output interface output to the BAT power module after voltage regulation by the second BUCK-BOOST module by controlling the fourth switch, the third switch, and the first switch to conduct, and at the same time makes the output voltage of the BAT power module output to the first input / output interface and the third input / output interface after voltage regulation by the first BUCK-BOOST module; or, the third input / output interface is used to connect to an adapter, and the first input / output interface and the second input / output interface are both used to connect to loads. The control module makes the input voltage of the third input / output interface output to the BAT power module after voltage regulation by the second BUCK-BOOST module by controlling the sixth switch, the third switch, and the second switch to conduct, and at the same time makes the output voltage of the BAT power module output to the first input / output interface and the second input / output interface after voltage regulation by the first BUCK-BOOST module.

[0016] It can be seen that in the present utility model, under different access states of the adapter and the load, by only controlling the corresponding switches to conduct or turn off, the connection paths can be cleverly switched to connect, so that the device can be switched between the mobile power working mode and the adapter working mode. Furthermore, in the mobile power working mode, independent fast charging between any two of the three interfaces can be realized, and in the adapter working mode, single-port fast charging output or dual-port shared output and fast charging of the BAT power module can be realized. The circuit structure is simple and reliable. At the same time, due to the significant simplification of the device structure design, the failure rate of the circuit structure will be greatly reduced.

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of an existing scheme with a two-DC-DC configuration and a three-interface architecture.

[0019] Figure 2 This is the circuit schematic diagram of an embodiment of a low-cost fast charging device that uses two DC-DCs in the present utility model to achieve independent fast charging for any two of multiple interfaces.

[0020] Figure 3 This is the circuit schematic diagram of the BUCK-BOOST module integrating the control module in an embodiment of a low-cost fast charging device that uses two DC-DCs in the present utility model to achieve independent fast charging for any two of multiple interfaces.

[0021] Figure 4 This is the flowchart of the control method implemented in an embodiment of a low-cost fast charging device that uses two DC-DCs in the present utility model to achieve independent fast charging for any two of multiple interfaces. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0023] Refer to Figure 2 and Figure 3 A low-cost fast charging device that uses two DC-DCs in the present utility model to achieve independent fast charging for any two of multiple interfaces includes a plurality of interfaces, a first BUCK-BOOST module 40, a second BUCK-BOOST module 50, a BAT power supply module 60, a control module 70, and a switching module corresponding to the number of the plurality of interfaces. Among them, the first BUCK-BOOST module and the second BUCK-BOOST module 50 are respectively connected to the corresponding interfaces through the corresponding switching modules, the BAT power supply module 60 is respectively connected to the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50, and the control module 70 is respectively connected to the control ends of the respective switching modules, and is used to control the conduction or cut-off of multiple switches in the respective switching modules according to the load of each interface or the access state of the charging device, so as to switch and connect the connection paths between the first BUCK-BOOST module 40, the second BUCK-BOOST module 50 and each interface, thereby realizing the function of independent fast charging for any two of the three interfaces. It can be understood that the control module 70 generally includes a controller and its peripheral circuits, and the control module 70 can control the MOS transistors in each switching module by two control ICs respectively, or control all the MOS transistors in each switching module by one MCU.

[0024] Specifically, the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50 in this embodiment are bidirectional buck-boost modules. Among them, the first BUCK-BOOST module 40 can achieve the bidirectional buck-boost function between the BAT power module 60 and the first input / output interface 10, the unidirectional buck-boost function between the BAT power module 60 and the second input / output interface 20, and the unidirectional buck-boost function between the BAT power module 60 and the third input / output interface 30. The second BUCK-BOOST module 50 can achieve the bidirectional buck-boost function between the BAT power module 60 and the second input / output interface 20 and the bidirectional buck-boost function between the BAT power module 60 and the third input / output interface 30.

[0025] Specifically, the BAT power module 60 in this embodiment is used to store electrical energy during charging and release electrical energy during discharging.

[0026] Specifically, the number of interfaces in this embodiment is 3, including the first input / output interface 10, the second input / output interface 20, and the third input / output interface 30. The first input / output interface 10 is a TYPE-C interface module, which is used to detect the insertion and removal states of the load or charging device on the TYPE-C interface. The second input / output interface 20 is a TYPE-C interface module, which is used to detect the insertion and removal states of the load or charging device on the TYPE-C interface. The third input / output interface 30 is a TYPE-C interface module, which is used to detect the insertion and removal states of the load or charging device on the TYPE-C interface.

[0027] Specifically, the TYPE-C interface in this embodiment is a 5-20V charge and discharge interface.

[0028] Correspondingly, the number of switch modules in this embodiment is also 3, including the first switch module, the second switch module, and the third switch module. The first switch module includes the third switch Q3 and the fifth switch Q5. The second switch module includes the fourth switch Q4 and the second switch Q2. The third switch module includes the first switch Q1 and the sixth switch Q6. The first BUCK-BOOST module 40 is connected to the first input / output interface 10 through the third switch Q3, connected to the second input / output interface 20 through the second switch Q2, and connected to the third input / output interface 30 through the first switch Q1. The second BUCK-BOOST module 50 is connected to the third input / output interface 30 through the sixth switch Q6, connected to the second input / output interface 20 through the fourth switch Q4, and connected to the first input / output interface 10 through the fifth switch Q5 and the third switch Q3.

[0029] Specifically, the control terminals of the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, and the sixth switch Q6 in this embodiment are connected to the control module 70.

[0030] Specifically, multiple switches in this embodiment all use MOS transistors. The source and drain of the MOS transistor are connected to the connection path, and its gate is the control terminal.

[0031] Specifically, when a load is connected to the first input / output interface 10 in this embodiment, the control module 70 controls the third switch Q3 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the first BUCK-BOOST module 40 and then output to the first input / output interface 10, realizing single-port fast charging output for the first input / output interface 10.

[0032] Specifically, when a load is connected to the second input / output interface 20 in this embodiment, the control module 70 controls the fourth switch Q4 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the second BUCK-BOOST module 50 and then output to the second input / output interface 20, realizing single-port fast charging output for the second input / output interface 20.

[0033] Specifically, when a load is connected to the third input / output interface 30 in this embodiment, the control module 70 controls the sixth switch Q6 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the second BUCK-BOOST module 50 and then output to the third input / output interface 30, realizing single-port fast charging output for the third input / output interface 30.

[0034] Specifically, when loads are connected to the second input / output interface 20 and the third input / output interface 30 in this embodiment, the control module 70 controls the second switch Q2 and the sixth switch Q6 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50 and then output to the second input / output interface 20 and the third input / output interface 30, realizing dual-port independent fast charging output for the second input / output interface 20 and the third input / output interface 30.

[0035] Specifically, when loads are connected to the first input / output interface 10 and the third input / output interface 30 in this embodiment, the control module 70 controls the third switch Q3 and the sixth switch Q6 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50 and then output to the first input / output interface 10 and the third input / output interface 30, realizing dual-port independent fast charging output for the first input / output interface 10 and the third input / output interface 30.

[0036] Specifically, when loads are connected to the first input / output interface 10 and the second input / output interface 20 in this embodiment, the control module 70 controls the third switch Q3 and the fourth switch Q4 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50 and then output to the first input / output interface 10 and the second input / output interface 20, realizing dual-port independent fast charging output for the first input / output interface 10 and the second input / output interface 20.

[0037] Specifically, when loads are connected to the first input / output interface 10, the second input / output interface 20, and the third input / output interface 30 in this embodiment, the control module 70 controls the third switch Q3 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the first BUCK-BOOST module 40 and then output to the first input / output interface 10. The control module 70 controls the fourth switch Q4 and the sixth switch Q6 to conduct, so that the output voltage of the BAT power supply module 60 is regulated by the second BUCK-BOOST module 50 and then output to the second input / output interface 20 and the third input / output interface 30, thereby realizing independent fast charging output for the first input / output interface 10 and dual-port shared output for the second input / output interface 20 and the third input / output interface 30. It can be understood that the control module 70 can also control the first switch Q1 and the second switch Q2 to conduct, so that the output voltage of the BAT power supply module 60 can also be regulated by the first BUCK-BOOST module 40 and then output to the second input / output interface 20 and the third input / output interface 30, thereby realizing fast charging output for the first input / output interface 10, the second input / output interface 20, and the third input / output interface 30 simultaneously.

[0038] Specifically, when an adapter is connected to the first input / output interface 10 in this embodiment, the control module 70 controls the third switch Q3 to conduct, so that the input voltage of the first input / output interface 10 is regulated by the first BUCK-BOOST module 40 and then output to the BAT power supply module 60, realizing fast charging of the BAT power supply module 60.

[0039] Specifically, when an adapter is connected to the second input / output interface 20 in this embodiment, the control module 70 controls the fourth switch Q4 to conduct, so that the input voltage of the second input / output interface 20 is regulated by the second BUCK-BOOST module 50 and then output to the BAT power supply module 60, realizing fast charging of the BAT power supply module 60.

[0040] Specifically, when the third input / output interface 30 is connected to an adapter in this embodiment, the control module 70 controls the sixth switch Q6 to conduct, so that the input voltage of the third input / output interface 30 is regulated by the second BUCK-BOOST module 50 and then output to the BAT power module 60, realizing fast charging of the BAT power module 60.

[0041] Specifically, when the first input / output interface 10 is connected to an adapter and the second input / output interface 20 is connected to a load in this embodiment, the control module 70 controls the third switch Q3 and the second switch Q2 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the first input / output interface 10 by the adapter is output to the load through the second input / output interface 20, and at the same time, it is regulated by the first BUCK-BOOST module 40 and then output to the BAT power module 60, realizing fast charging output for the load connected to the second input / output interface 20 and fast charging of the BAT power module 60.

[0042] Specifically, when the second input / output interface 20 is connected to an adapter and the first input / output interface 10 is connected to a load in this embodiment, the control module 70 controls the fourth switch Q4, the fifth switch Q5 and the third switch Q3 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the second input / output interface 20 by the adapter is output to the load through the first input / output interface 10, and at the same time, it is regulated by the second BUCK-BOOST module 50 and then output to the BAT power module 60, realizing fast charging output for the load connected to the first input / output interface 10 and fast charging of the BAT power module 60.

[0043] Specifically, when the first input / output interface 10 is connected to an adapter and the third input / output interface 30 is connected to a load in this embodiment, the control module 70 controls the third switch Q3 and the first switch Q1 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the first input / output interface 10 by the adapter is output to the load through the third input / output interface 30, and at the same time, it is regulated by the first BUCK-BOOST module 40 and then output to the BAT power module 60, realizing fast charging output for the load connected to the third input / output interface 30 and fast charging of the BAT power module 60.

[0044] Specifically, in this embodiment, when the third input / output interface 30 is connected to the adapter and the first input / output interface 10 is connected to the load, the control module 70 controls the sixth switch Q6, the fifth switch Q5, and the third switch Q3 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the third input / output interface 30 of the adapter is output to the load through the first input / output interface 10, and at the same time, it is output to the BAT power module 60 after voltage regulation by the second BUCK-BOOST module 50, realizing fast charging output for the load connected to the first input / output interface 10 and fast charging for the BAT power module 60.

[0045] Specifically, in this embodiment, when the second input / output 20 module is connected to the adapter and the third input / output interface 30 is connected to the load, the control module 70 controls the fourth switch Q4 and the sixth switch Q6 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the second input / output interface 20 of the adapter is output to the load through the third input / output interface 30, and at the same time, it is output to the BAT power module 60 after voltage regulation by the second BUCK-BOOST module 50, realizing fast charging output for the load connected to the third input / output interface 30 and fast charging for the BAT power module 60.

[0046] Specifically, in this embodiment, when the third input / output interface 30 is connected to the adapter and the second input / output interface 20 is connected to the load, the control module 70 controls the sixth switch Q6 and the fourth switch Q4 to conduct, so that the load is connected to the adapter. The load can request the required voltage from the adapter. The voltage input through the third input / output interface 30 of the adapter is output to the load through the second input / output interface 20, and at the same time, it is output to the BAT power module 60 after voltage regulation by the second BUCK-BOOST module 50, realizing fast charging output for the load connected to the second input / output interface 20 and fast charging for the BAT power module 60.

[0047] Specifically, in this embodiment, when the first input / output interface 10 is connected to the adapter and both the second input / output interface 20 and the third input / output interface 30 are connected to the load, the control module 70 controls the third switch Q3, the fourth switch Q4, and the sixth switch Q6 to conduct, so that the input voltage of the first input / output interface 10 is output to the BAT power module 60 after voltage regulation by the first BUCK-BOOST module 40. At the same time, the output voltage of the BAT power module 60 is output to the second input / output interface 20 and the third input / output interface 30 after voltage regulation by the second BUCK-BOOST module 50. Realize dual-port shared output for the second input / output interface 20 and the third input / output interface 30 and fast charging for the BAT power module.

[0048] Specifically, in this embodiment, when the second input / output interface 20 is connected to an adapter and the first input / output interface 10 and the third input / output interface 30 are both connected to loads, the control module 70 controls the fourth switch Q4, the third switch Q3, and the first switch Q1 to conduct, so that the input voltage of the second input / output interface 20 is regulated by the second BUCK-BOOST module 50 and then output to the BAT power module 60. At the same time, the output voltage of the BAT power module 60 is regulated by the first BUCK-BOOST module 40 and then output to the first input / output interface 10 and the third input / output interface 30. The dual-port shared output of the first input / output interface 10 and the third input / output interface 30 and the fast charging of the BAT power module are realized.

[0049] Specifically, in this embodiment, when the third input / output interface 30 is connected to an adapter and the first input / output interface 10 and the second input / output interface 20 are both connected to loads, the control module 70 controls the sixth switch Q6, the third switch Q3, and the second switch Q2 to conduct, so that the input voltage of the third input / output interface 30 is regulated by the second BUCK-BOOST module 50 and then output to the BAT power module 60. At the same time, the output voltage of the BAT power module 60 is regulated by the first BUCK-BOOST module 40 and then output to the first input / output interface 10 and the second input / output interface 20. The dual-port shared output of the first input / output interface 10 and the second input / output interface 20 and the fast charging of the BAT power module are realized.

[0050] Specifically, in this embodiment, the control module 70 includes a control module integrated with the first BUCK-BOOST module 40 and a control module integrated with the second BUCK-BOOST module 50. The control module integrated with the second BUCK-BOOST module 50 communicates with the control module integrated with the first BUCK-BOOST module 40 through a communication protocol. The control module 70 configures the first BUCK-BOOST module 40 and the second BUCK-BOOST module 50 according to the input / output protocols of each interface.

[0051] See Figure 4 , this embodiment also provides a super-low-cost fast charging control method for realizing independent fast charging of any two interfaces among three interfaces by two-way DC-DC, which is applied to the low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces by two-way DC-DC. The method includes:

[0052] S1: Determine whether the first input / output interface 10 is connected to an adapter, whether the second input / output interface 20 is connected to an adapter, and whether the third input / output interface 30 is connected to an adapter. If none of them is connected to an adapter, execute step S2; if connected to an adapter, execute step S3;

[0053] S2: Determine whether a load is connected to the first input / output interface 10, whether a load is connected to the second input / output interface 20, and whether a load is connected to the third input / output interface 30. If no load is connected, it is in the standby state; if only one input / output module is connected to a load, the control module 70 controls the corresponding switch to conduct or turn off to achieve single-port fast charging output of the BAT power module 60 to the load; if two input / output modules are connected to loads, the control module 70 controls the corresponding switch to conduct or turn off to achieve dual-port independent fast charging output of the BAT power module 60 to the load; if all three input / output modules are connected to loads, the control module 70 controls the corresponding switch to conduct or turn off to achieve independent fast charging output of the BAT power module 60 to the first input / output interface 10 and dual-port shared output to the second input / output interface 20 and the third input / output interface 30. Repeat step S1;

[0054] S3: Excluding the input / output module to which the adapter is connected, determine whether the remaining two input / output modules are connected to a load. If neither is connected, the control module 70 controls the corresponding switch to conduct or turn off to achieve fast charging of the BAT power module 60 by the first BUCK - BOOST module 40 or the second BUCK - BOOST module 50. If the remaining two input / output modules are connected to loads, the control module 70 controls the corresponding switch to conduct or turn off to achieve single-port fast charging output or dual-port shared output to the load and fast charging of the BAT power module 60, and repeat step S1.

[0055] Specifically, in this embodiment, it further includes S4: When one input / output module is connected to the adapter, determine whether the remaining two input / output modules are connected to a load. If only one of the remaining two input / output modules is connected to a load, the control module 70 controls the corresponding switch to conduct or turn off to achieve single-port fast charging output to the load and fast charging of the BAT power module 60; if the remaining two input / output modules are both connected to loads, the control module 70 controls the corresponding switch to conduct or turn off to achieve dual-port shared output to the load and fast charging of the BAT power module 60, and repeat step S3.

[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity in description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0057] The above implementation manners are only the preferred implementation manners of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope required to be protected by the present invention.

Claims

1. A low-cost fast charging device that uses two DC-DC converters to achieve independent fast charging for any two interfaces among multiple interfaces, characterized in that Comprising: A plurality of interfaces, a first BUCK - BOOST module, a second BUCK - BOOST module, a BAT power supply module, a control module, and switch modules having the same number as the interfaces; wherein, the switch modules are respectively and correspondingly connected to the interfaces, the first BUCK - BOOST and the second BUCK - BOOST modules are connected to the interfaces through the respective switch modules, the BAT power supply module is respectively connected to the first BUCK - BOOST module and the second BUCK - BOOST module, and the control module is respectively connected to the control ends of the respective switch modules, and is used to control the conduction or cut - off of a plurality of switches in each switch module according to the load of each interface or the access state of a charging device, so as to switch and connect the connection paths between the first BUCK - BOOST module, the second BUCK - BOOST module and each interface.

2. The low - cost fast - charging device for realizing independent fast - charging of any two interfaces among multiple interfaces by two - way DC - DC according to claim 1, wherein: The number of the interfaces is 3, including a first input / output interface, a second input / output interface, and a third input / output interface. The 3 input / output ports are all TYPE - C interface modules, and are used to detect the insertion and extraction states of a load or a charging device on the TYPE - C interface.

3. The low - cost fast - charging device for realizing independent fast - charging of any two interfaces among multiple interfaces by two - way DC - DC according to claim 2, wherein: The switch modules include a first switch module, a second switch module, and a third switch module; the first switch module includes a third switch and a fifth switch; the second switch module includes a fourth switch and a second switch; the third switch module includes a first switch and a sixth switch; the first BUCK - BOOST module is connected to the third input / output interface through the first switch, the first BUCK - BOOST module is connected to the second input / output interface through the second switch, and the first BUCK - BOOST module is connected to the first input / output interface through the third switch; The second BUCK - BOOST module is connected to the second input / output interface through the fourth switch, the second BUCK - BOOST module is connected to the third input / output interface through the sixth switch, the second BUCK - BOOST module is connected to the first input / output interface through the fifth switch, or the second BUCK - BOOST module is connected to the first input / output interface through the fifth switch and the third switch.

4. The low - cost fast - charging device for realizing independent fast - charging of any two interfaces among multiple interfaces by two - way DC - DC according to claim 1, wherein: The first BUCK-BOOST module is connected to the control module, and the second BUCK-BOOST module is connected to the control module. The control module is configured to configure the operating states of the first BUCK-BOOST module and the second BUCK-BOOST module according to the input-output protocol of the interface.

5. The low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces by two-way DC-DC according to claim 3, wherein: The first input-output interface is used to connect to a load. The control module controls the third switch to conduct, so that the output voltage of the BAT power supply module is regulated by the first BUCK-BOOST module and then output to the first input-output interface. The second input-output interface is used to connect to a load. The control module controls the fourth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the second BUCK-BOOST module and then output to the second input-output interface. The third input-output interface is used to connect to a load. The control module controls the sixth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the second BUCK-BOOST module and then output to the third input-output interface.

6. The low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces by two-way DC-DC according to claim 3, wherein: The second input-output interface and the third input-output interface are used to connect to a load. The control module controls the second switch and the sixth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the second input-output interface and the third input-output interface. Alternatively, the first input-output interface and the third input-output interface are used to connect to a load. The control module controls the third switch and the sixth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the first input-output interface and the third input-output interface. Alternatively, the first input-output interface and the second input-output interface are used to connect to a load. The control module controls the third switch and the fourth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the first BUCK-BOOST module and the second BUCK-BOOST module and then output to the first input-output interface and the second input-output interface.

7. The low-cost fast charging device for realizing independent fast charging of any two interfaces among multiple interfaces by two-way DC-DC according to claim 3, wherein: The first input / output interface is used to connect to an adapter. The control module controls the third switch to conduct, so that the input voltage of the first input / output interface is regulated by the first BUCK-BOOST module and then output to the BAT power supply module. The second input / output interface is used to connect to an adapter. The control module controls the fourth switch to conduct, so that the input voltage of the second input / output interface is regulated by the second BUCK-BOOST module and then output to the BAT power supply module. The third input / output interface is used to connect to an adapter. The control module controls the sixth switch to conduct, so that the input voltage of the third input / output interface is regulated by the second BUCK-BOOST module and then output to the BAT power supply module, realizing fast charging of the BAT power supply module.

8. The low-cost fast charging device for realizing independent fast charging of any two interfaces of multiple interfaces by two-way DC-DC according to claim 3, wherein: The first input / output interface, the second input / output interface and the third input / output interface are all used to connect to a load. The control module controls the third switch to conduct, so that the output voltage of the BAT power supply module is regulated by the first BUCK-BOOST module and then output to the first input / output interface; the control module controls the fourth switch and the sixth switch to conduct, so that the output voltage of the BAT power supply module is regulated by the second BUCK-BOOST module and then output to the second input / output interface and the third input / output interface.

9. The low-cost fast charging device for realizing independent fast charging of any two interfaces of multiple interfaces by two-way DC-DC according to claim 3, wherein: One of the first input / output interface and the second input / output interface is used to connect to an adapter, and the other is used to connect to a load. The control module controls the first switch module, the second switch module and the third switch module to connect the load to the adapter, so that the load can apply for the required voltage from the adapter. At the same time, the control module controls the first switch module, the second switch module and the third switch module to make the voltage output by the adapter pass through the first BUCK-BOOST module or the second BUCK-BOOST module for voltage regulation and then output to the BAT power supply module.

10. The low-cost fast charging device for realizing independent fast charging of any two interfaces of multiple interfaces by two-way DC-DC according to claim 3, wherein: The first input / output interface is used to connect to an adapter, the second input / output interface and the third input / output interface are both used to connect to loads. The control module makes the input voltage of the first input / output interface output to the BAT power module after voltage regulation by the first BUCK-BOOST module by controlling the third switch, the fourth switch and the sixth switch to conduct. At the same time, the output voltage of the BAT power module is output to the second input / output interface and the third input / output interface after voltage regulation by the second BUCK-BOOST module; Alternatively, the second input / output interface is used to connect to an adapter, the first input / output interface and the third input / output interface are both used to connect to loads. The control module makes the input voltage of the second input / output interface output to the BAT power module after voltage regulation by the second BUCK-BOOST module by controlling the fourth switch, the third switch and the first switch to conduct. At the same time, the output voltage of the BAT power module is output to the first input / output interface and the third input / output interface after voltage regulation by the first BUCK-BOOST module; Alternatively, the third input / output interface is used to connect to an adapter, the first input / output interface and the second input / output interface are both used to connect to loads. The control module makes the input voltage of the third input / output interface output to the BAT power module after voltage regulation by the second BUCK-BOOST module by controlling the sixth switch, the third switch and the second switch to conduct. At the same time, the output voltage of the BAT power module is output to the first input / output interface and the second input / output interface after voltage regulation by the first BUCK-BOOST module.

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