Two-turn battery-changing power supply device and two-turn battery-changing power supply system

Abstract

The utility model discloses a two-turn power conversion power supply device and system, and relates to the field of power conversion, an AC-DC module adopted in the scheme can be disassembled through a matched input end standard interface and a first bus standard interface, and a DC-DC module can be disassembled through a matched second bus standard interface. According to the invention, the number of the AC-DC modules and the number of the DC-DC modules can be respectively configured according to requirements by arranging each standard interface, and the scheme has the function of power reduction configuration on the occasion that all batteries do not need to be charged at the same time; and secondly, according to the scheme, different DC-DC modules can be flexibly selected to charge a plurality of batteries in a mode of controlling the first switch array and the second switch array, so that the power supply system after power reduction configuration can normally and reasonably work. Compared with an existing power supply system, the total cost of the system is optimized, and resources are effectively and reasonably utilized and maximized.

Description

Technical Field

[0001] The utility model relates to the field of battery swapping, in particular to a two-wheel battery swapping power supply device and system. Background Art

[0002] With the development of technology, a large number of electric vehicles are used. In particular, the number of electric bicycles is increasing year by year, and the batteries of electric bicycles need to be charged. Therefore, the two-wheel battery swapping power supply system is used more and more frequently.

[0003] In the existing power supply system, multiple fixed power supply lines are used to charge the batteries. In each power supply line, an AC-DC (Alternating Current-Direct Current) module and a DC-DC (Direct Current -Direct Current) module are arranged in sequence. Among them, the AC-DC module is connected to the power distribution cabinet, and the DC-DC module is connected to the charging interface of the battery. Each AC-DC module and DC-DC are fixedly connected, and the AC-DC module and DC-DC module on each charging line are fixed. Each battery charging port is connected to the AC power supply of the power distribution cabinet through a DC-DC and an AC-DC. Therefore, in the existing setting method, there is a situation of overall power over-allocation. And in actual operation, there is only a very small probability that multiple batteries need to be charged together, that is, only a very small part of the AC-DC modules and DC-DC modules are needed to work during actual battery charging. The AC-DC modules and DC-DC modules on the non-charging power supply lines will be in an idle state, which will cause the resources of the entire power supply system not to be reasonably utilized and greatly increase the total cost of the power supply system. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a two-wheel battery swapping power supply device and system. By setting each standard interface, the two-wheel battery swapping power supply system can configure the number of AC-DC modules and DC-DC modules according to needs. In the case where not all batteries need to be charged simultaneously, this solution has the function of reducing power configuration. Secondly, this solution can flexibly select different DC-DC modules to charge multiple batteries by controlling the first switch array and the second switch array, so that the power supply system after reducing power configuration can work normally and reasonably. Compared with the existing power supply system, the total cost of the system is optimized, and the resources are effectively and reasonably utilized and maximized.

[0005] To solve the above technical problems, the present utility model provides a two-wheel battery swapping power supply device, comprising: M AC-DC modules, N DC-DC modules, a first switch array, a second switch array, M input standard interfaces corresponding to the M AC-DC modules one by one, M first bus standard interfaces, N second bus standard interfaces corresponding to the N DC-DC modules one by one, and t charging interfaces; M, N, and t are all positive integers greater than 1.

[0006] The M input standard interfaces are all connected to the power distribution cabinet through an AC bus, and are used to receive the AC electric energy transmitted by the power distribution cabinet.

[0007] The input ends of the M AC-DC modules are detachably connected to the M input standard interfaces one by one, and are used to convert the AC electric energy into corresponding DC electric energy.

[0008] The M first bus standard interfaces are detachably connected to the output ends of the M AC-DC modules one by one and are all connected to the DC bus.

[0009] The N second bus standard interfaces are all connected to the DC bus and are used to receive the DC electric energy.

[0010] The input ends of the N DC-DC modules are detachably connected to the N second bus standard interfaces one by one, and are used to perform voltage transformation on the DC electric energy to obtain the transformed DC electric energy.

[0011] The N input ends of the first switch array are connected to the output ends of the N DC-DC modules one by one.

[0012] The N input ends of the second switch array are connected to the N output ends of the first switch array one by one, and the N*t output ends of the second switch array are respectively connected to the t charging interfaces.

[0013] Optionally, the first switch array includes: N first controllable switches.

[0014] For any one of the first controllable switches, it includes an input end and an output end. The input end of any one of the first controllable switches is correspondingly connected to the output end of the DC-DC module, and the output end of any one of the first controllable switches is correspondingly connected to the input end of the second switch array.

[0015] Wherein, when the two-wheel battery swapping power supply device works, at least one of the N first controllable switches is closed.

[0016] Optionally, the second switch array includes: N*t second controllable switches.

[0017] The N*t second controllable switches are divided into N groups of switch modules, and each group of switch modules contains t second controllable switches;

[0018] The input ends of any one of the second controllable switches inside each group of switch modules are connected to each other, and serve as an input end of the second switch array to be correspondingly connected to the N output ends of the first switch array one by one;

[0019] The output end of any one of the second controllable switches inside each group of switch modules is correspondingly connected to the t charging interfaces one by one;

[0020] When the two-wheeled power swapping power supply device works, at least one of the second controllable switches connected to the closed first switch array is closed.

[0021] Optionally, the first controllable switch or the second controllable switch is a relay, the moving contact of the normally open contact of the relay serves as the input end of the first controllable switch or the second controllable switch, and the static contact of the normally open contact serves as the output end of the first controllable switch or the second controllable switch.

[0022] Optionally, the first controllable switch or the second controllable switch is a bidirectional MOS transistor, one non-control pole of the bidirectional MOS transistor serves as the input end of the first controllable switch or the second controllable switch, and the other non-control pole of the bidirectional MOS transistor serves as the output end of the first controllable switch or the second controllable switch.

[0023] Optionally, the number of the first bus standard interfaces ≥ M; the number of the second bus standard interfaces ≥ N.

[0024] Optionally, it further includes: a first acquisition device and a controller;

[0025] The acquisition end of the first acquisition device is connected to t batteries, and is used for acquiring the voltage value and / or charging current value and / or temperature value of the t batteries;

[0026] The first input end of the controller is connected to the output end of the first acquisition device, and the first control end is connected to the control ends of the first switch array and / or the second switch array, and is used for controlling the first switch array and / or the second switch array to perform corresponding opening or closing based on the voltage value and / or the charging current value and / or the temperature value.

[0027] Optionally, it further includes:

[0028] A second acquisition device, the acquisition end of the second acquisition device is connected to the N DC-DC modules, and is used for acquiring the fault parameters of the N DC-DC modules;

[0029] Correspondingly, the second input end of the controller is connected to the output end of the second acquisition device, and the second control end is connected to the control end of the first switch array and / or the control end of the second switch array, and is configured to control the first switch array and / or the second switch array to perform corresponding opening or closing based on the fault parameter.

[0030] To solve the above technical problems, the present utility model further provides a two-wheel battery swapping power supply system, including: a power distribution cabinet, the two-wheel battery swapping power supply device as described above, and t batteries, and the two-wheel battery swapping power supply device is respectively connected to the power distribution cabinet and the charging interfaces of the t batteries.

[0031] The purpose of the present utility model is to provide a two-wheel battery swapping power supply device and system. In the present solution, the AC-DC module can be disassembled through the supporting input end standard interface and the first bus standard interface, while the DC-DC module is disassembled through the supporting second bus standard interface. That is, the present application enables the two-wheel battery swapping power supply system to configure the number of AC-DC modules and DC-DC modules separately according to requirements. In occasions where it is not necessary to charge all batteries simultaneously, the present solution has the function of reducing power configuration. Secondly, the present solution can flexibly select different DC-DC modules to charge multiple batteries by controlling the first switch array and the second switch array, so that the power supply system after reducing power configuration can work normally and reasonably. Compared with the existing power supply system, the total cost of the system is optimized, and resources are effectively and reasonably utilized and maximized. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of a two-wheel battery swapping power supply device provided by the present utility model;

[0034] Figure 2 It is another schematic structural diagram of a two-wheel battery swapping power supply device provided by the present utility model;

[0035] Figure 3 It is a partial schematic structural diagram of a two-wheel battery swapping power supply device provided by the present utility model;

[0036] Figure 4 It is another partial schematic structural diagram of a two-wheel battery swapping power supply device provided by the present utility model. Detailed implementation manners

[0037] The core of the present utility model is to provide a two-wheeled power swapping power supply device and system. By setting various standard interfaces in this application, the two-wheeled power swapping power supply system can configure the number of AC-DC modules and DC-DC modules according to requirements. In situations where it is not necessary to charge all batteries simultaneously, this solution has the function of reducing power configuration. Secondly, this solution can flexibly select different DC-DC modules to charge multiple batteries by controlling the first switch array and the second switch array, enabling the power supply system after reducing power configuration to work properly and reasonably. Compared with the existing power supply system, the total cost of the system is optimized, and resources are effectively and reasonably utilized and maximized.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a two-wheeled power swapping power supply device provided by the present utility model. The two-wheeled power swapping power supply device includes: M AC-DC modules 1, N DC-DC modules 2, a first switch array 3, a second switch array 4, M input terminal standard interfaces 5 corresponding to the M AC-DC modules 1 one by one, M first bus standard interfaces 6, N second bus standard interfaces 7 corresponding to the N DC-DC modules 2 one by one, and t charging interfaces 8; M, N, and t are all positive integers greater than 1;

[0040] The M input terminal standard interfaces 5 are all connected to the power distribution cabinet through an AC bus for receiving AC electric energy transmitted by the power distribution cabinet;

[0041] The input ends of the M AC-DC modules 1 are detachably connected to the M input terminal standard interfaces 5 one by one for converting AC electric energy into corresponding DC electric energy;

[0042] The M first bus standard interfaces 6 are detachably connected to the output ends of the M AC-DC modules 1 one by one and are all connected to the DC bus;

[0043] The N second bus standard interfaces 7 are all connected to the DC bus for receiving DC electric energy;

[0044] The input ends of N DC-DC modules 2 are detachably connected to N second bus standard interfaces 7 one by one, and are used for transforming the DC electric energy to obtain the transformed DC electric energy;

[0045] The N input ends of the first switch array 3 are connected to the output ends of N DC-DC modules 2 one by one;

[0046] The N input ends of the second switch array 4 are connected to the N output ends of the first switch array 3 one by one, and the N*t output ends of the second switch array 4 are respectively connected to t charging interfaces 8.

[0047] In the present utility model, in order to improve the flexibility of the two-wheeled power swapping power supply device and reduce the waste of resources of the two-wheeled power swapping power supply device, corresponding numbers of input end standard interfaces 5 and first bus standard interfaces 6 are provided for the AC-DC module 1, so as to install or remove the corresponding AC-DC module 1 through the input end standard interface 5 and the first bus standard interface 6. Similarly, corresponding numbers of second bus standard interfaces 7 are provided for the DC-DC module 2, so as to install or remove the corresponding DC-DC module 2 through the second bus standard interface 7. Therefore, the two-wheeled power swapping power supply device provided by the present application can set the numbers of the AC-DC module 1 and the DC-DC module 2 according to actual needs, and compared with the power supply system in the prior art, the present solution has the function of reducing power configuration; secondly, since the first switch array 3 has N input ends and N output ends, it is equivalent to N switches, and since the second switch array 4 has N input ends and N*t output ends, it is equivalent to N*t switches. Therefore, in actual application, the present application can control the first switch array 3 and the second switch array 4 to select different DC-DC modules 2 to charge different batteries through different charging interfaces 8. For example: there are three switches in the first switch array 3. If there are five batteries to be charged, then fifteen switches need to be set in the second switch array 4 at this time; if two DC-DC modules 2 are needed to charge the first battery currently, the two switches in the first switch array 3 can be controlled to close, and the switches in the second switch array 4 that are connected to the two closed switches and are connected to the battery to be charged can be controlled to close, so as to realize selecting different DC-DC modules 2 to charge different batteries, so as to achieve the purpose of optimizing power configuration. Compared with the existing power supply system, the total cost of the system is optimized, and the resources are effectively and reasonably utilized and maximized.

[0048] It should be noted that, such as Figure 2As shown, in this two-wheel battery swapping power supply system, it includes: M AC-DC modules 1, N DC-DC modules 2, a first switch array 3, a second switch array 4, and t battery charging interfaces, where M, N, and t are positive integers greater than 1. The input end of the AC-DC module 11 serves as the input end of the two-wheel battery swapping power supply system and is connected to a distribution box or a power distribution cabinet to obtain alternating current therefrom. In this application, it is defined that this distribution box or power distribution cabinet is the power distribution network, and the alternating current obtained therefrom is defined as distribution electric energy.

[0049] It should also be noted that in actual applications, the above-mentioned distribution electric energy limits the maximum power for charging several batteries by this power supply system. The number of charging interfaces can be set reasonably according to this maximum power. In order to solve the problems of the prior art to be addressed in this application, reduce the power configuration of the power supply, and reduce the initial investment cost, a configured power less than the maximum power is set; according to this configured power and the power of each AC-DC module 1, the number of AC-DC modules 1 and the corresponding number of DC-DC modules 2 can be calculated; the first switch array 3 and the second switch array 4 can be set according to the number of charging interfaces and the number of DC-DC modules 2. In the two-wheel battery swapping power supply system of this application, for the setting of the AC-DC module 1 and the DC-DC module 2, the separately independent charging paths in the prior art are replaced by detachable modules through standard interfaces, enabling it to flexibly select the number of each module configured according to the charging requirements. At the same time, after the demand for the battery swapping system increases in the future, the distribution power can be increased by increasing the number of each module, realizing the expansion of the battery swapping system without the need to invest in reconstructing the battery swapping system again. When a certain AC-DC module 1 fails or a certain DC-DC module 2 fails, the output power of the entire power supply system decreases to the total power of the power supply modules in normal operation, but through the control of the first switch array 3 and the second switch array 4, the batteries can still be charged orderly.

[0050] It should also be noted that the standard interface in this application refers to standardizing both ends of the interface for electrical connection such as connection lines or connection ports. While standardizing the interface, the ports of the modules connected to the standardized interface or the connection lines are also standardized. When the power supply system standardizes all the connection lines or connection ports, the modules are no longer independent, but the same modules are combined into an overall functional block. Even if one or some modules in the functional block stop working, the functional block can still work normally, thus not affecting the operation of the system. At the same time, modules can be conveniently installed or removed inside the functional block, and the number of modules can be set and changed arbitrarily according to requirements. The structures of the M input end standard interfaces 5, the M first bus standard interfaces 6, and the N second bus standard interfaces 7 are as Figure 3As shown in the figure, where A1 - A5 are the standard input interfaces 5, B1 - B5 are the first bus standard interfaces 6, and C1 - C5 are the second bus standard interfaces 7. It can be seen that the number of standard input interfaces 5 is equal to the number of the first bus standard interfaces 6. Taking the selection of the number of AC - DC modules 1 as an example, assume that when the power of the power grid allows the power supply system to operate at the maximum power, 5 AC - DC modules 1 are required to achieve this. Then assume that the charging requirement is that not all batteries need to be charged at the maximum power simultaneously. In this case, the two - wheel battery - swapping power supply system does not need 5 AC - DC modules 1. Maybe only 3 AC - DC modules 1 are needed to meet the charging requirement. Then, according to the charging requirement, 3 AC - DC modules 1 can be configured in the two - wheel battery - swapping power supply system of the present application. That is, 3 are selected from the standard input interfaces 5 and the first bus standard interfaces 6 respectively to form 3 pairs of standard interfaces, which shows that the two - wheel battery - swapping power supply system of the present application has the function of power - down configuration.

[0051] This embodiment provides a two - wheel battery - swapping power supply device and system. In this solution, the AC - DC module 1 can be disassembled through the supporting standard input interfaces 5 and the first bus standard interfaces 6, while the DC - DC module 2 is disassembled through the supporting second bus standard interfaces 7. That is, the present application enables the two - wheel battery - swapping power supply system to configure the number of AC - DC modules 1 and DC - DC modules 2 respectively according to requirements by setting each standard interface. In the case where not all batteries need to be charged simultaneously, this solution has the function of power - down configuration. Secondly, this solution can flexibly select different DC - DC modules 2 to charge multiple batteries by controlling the first switch array 3 and the second switch array 4, so that the power supply system after power - down configuration can work normally and reasonably. Compared with the existing power supply systems, the total cost of the system is optimized, and resources are effectively and reasonably utilized and maximized. At the same time, in the power supply settings of the prior art, if one or more power modules fail, it cannot be used, which will affect the overall economic benefits if not repaired in time, and the operation and maintenance costs are relatively high. However, even if one or a few AC - DC modules 1 or DC - DC modules 2 in the power supply device of the present application fail, the system can still reduce the power to charge all batteries by controlling the first switch array 3 and the second switch array 4.

[0052] Based on the above - mentioned embodiment:

[0053] As an optional embodiment, the first switch array 3 includes: N first controllable switches;

[0054] For any one of the first controllable switches, it includes an input end and an output end. The input end of any one of the first controllable switches is correspondingly connected to the output end of the DC - DC module 2, and the output end of any one of the first controllable switches is correspondingly connected to the input end of the second switch array 4;

[0055] Among them, when the two-wheel battery swapping power supply device works, at least one of the N first controllable switches is closed.

[0056] In the present utility model, the first switch sequence is composed of N first controllable switches. Since each first controllable switch is correspondingly connected to the output end of a DC-DC module 2 and the second switch array 4, and when the two-wheel battery swapping power supply device actually works, at least one first controllable switch can be closed, thereby ensuring that the battery connected to the two-wheel battery swapping power supply device can be normally charged. In addition, in practical applications, different DC-DC modules 2 can be selected to supply power to different batteries by controlling the first controllable switches, so as to avoid the situation that one or more DC-DC modules 2 or AC-DC modules 1 suddenly fail, resulting in the inability to supply power to the corresponding battery, and improving the reliability of the solution.

[0057] It should be noted that as Figure 4 shown, among them, the number of controllable switches in the first switch array 3 is 3, and the number of controllable switches in the second switch array 4 is 5. When the two-wheel battery swapping power supply system works, at least one switch in the first switch array 3 is turned on, and at least one switch in a group of switches in the second switch array 4 connected to the turned-on switch is turned on, so as to ensure that the battery can receive DC electric energy.

[0058] It should also be noted that for the two-wheel battery swapping power supply system of the present application, considering the requirement of reducing power cost, in practical applications, it is necessary to ensure that the maximum output power of the M AC-DC modules 1 does not exceed the maximum output power of the charging interfaces of t batteries; similarly, it is also necessary to ensure that the maximum output power of the N DC-DC modules 2 does not exceed the maximum output power of the charging interfaces of t batteries, so as to achieve the purpose of optimizing the system cost. Assume that the maximum output power of each charging interface among the charging interfaces of t batteries is s1, and the maximum output power of each DC-DC module 2 is s2, then it is necessary to ensure that s2 * N ≤ s1 * t. Similarly: assume that the maximum output power of each charging interface among the t charging interfaces is s1, and the maximum output power of each AC-DC module 1 is s3, then it is necessary to ensure that s3 * M ≤ s1 * t.

[0059] It should also be noted that taking N = 3 and t = 5 as an example, that is, the number of DC-DC modules 2 is 3 and the number of battery packs is 5. Therefore, according to the two-wheel battery swapping power supply system of the present application, 3 switches are set in the first switch array 3, as Figure 4 shown as SW1, SW2, and SW3 respectively, and their first ends are respectively connected to a DC-DC module 2. 3 groups of switches are set in the second switch array 4, and each group of switches is provided with 5 switches, as Figure 4The first group of switches are shown as SW11, SW12, SW13, SW14, and SW15, the second group of switches are SW21, SW22, SW23, SW24, and SW25, and the third group of switches are SW31, SW32, SW33, SW34, and SW35. All the first ends of the first group of switches (SW1, …, SW5) are connected and connected to the second end of SW1, while the second ends of the first group of switches (SW1, …, SW5) are respectively connected to the charging interfaces of 5 batteries in one-to-one correspondence.

[0060] It should also be noted that in practical applications, the first controllable switch or the second controllable switch can be a relay, a bidirectional MOS transistor, or other controllable switch devices. For example, a relay and an electronic control switch can be provided in the first controllable switch. The control end of the electronic control switch can be connected to the controller, the first end of the electronic control switch is connected to the preset power supply, the second end is connected to the first end of the coil of the relay, the second end of the coil of the relay is connected to the ground, the moving contact of the normally open contact of the relay is connected to the output end of the DC-DC module 2 in correspondence, and the static contact of the normally open contact is connected to the second switch array 4. When the controller sends an electrical signal, the electronic control switch closes, the coil of the relay is energized, and the moving contact and the static contact of the normally open contact of the relay close; conversely, when the controller does not send an electrical signal, the electronic control switch disconnects, the coil of the relay is not energized, and the moving contact and the static contact of the normally open contact of the relay turn off.

[0061] As an optional embodiment, the second switch array 4 includes: N*t second controllable switches;

[0062] The N*t second controllable switches are divided into N groups of switch modules, and each group of switch modules contains t second controllable switches;

[0063] The input ends of any one of the second controllable switches inside each group of switch modules are connected to each other and serve as an input end of the second switch array to be connected to the N output ends of the first switch array 3 in one-to-one correspondence;

[0064] The output ends of any one of the second controllable switches inside each group of switch modules are connected to t charging interfaces in one-to-one correspondence;

[0065] Among them, when the two-wheeled power swapping device is working, at least one of the second controllable switches connected to the closed first switch array 3 is closed.

[0066] In the present utility model, N*t second controllable switches are provided in the second switch array 4, and the N*t second controllable switches are divided into N switch modules, with each switch module containing t second controllable switches. Since each second controllable switch needs to be respectively connected to the corresponding charging interface and the output end of the first switch array, when the two-round power swapping power supply device operates normally, to ensure that the battery connected to the two-round power swapping power supply device can be normally charged, it is necessary to ensure that at least one of the second controllable switches connected to the closed first switch array 3 is closed. Therefore, in practical applications, different DC-DC modules 2 can be selected to supply power to different batteries by controlling the second controllable switches, so as to avoid the situation where one or more DC-DC modules 2 or AC-DC modules 1 suddenly fail, resulting in the inability to supply power to the corresponding battery, thereby improving the reliability of the solution.

[0067] As an optional embodiment, the first controllable switch or the second controllable switch is a relay. The moving contact of the normally open contact of the relay serves as the input end of the first controllable switch or the second controllable switch, and the static contact of the normally open contact serves as the output end of the first controllable switch or the second controllable switch.

[0068] In the present utility model, both the first controllable switch and the second controllable switch can adopt relays. By using the characteristics that after the coil of the relay is energized, the moving contact and the static contact of the normally open contact of the relay are closed, and conversely, if the coil of the relay is not energized, the moving contact and the static contact of the normally open contact of the relay are disconnected, the opening and closing of the relay are controlled, thereby controlling the charging process of the battery. In addition, the relay also has the advantages of fast action, stable operation, long service life, small volume, can directly control a relatively large load, does not require additional driving devices, and can play a role in isolating strong electricity and weak electricity.

[0069] As an optional embodiment, the first controllable switch or the second controllable switch is a bidirectional MOS transistor. One non-control pole of the bidirectional MOS transistor serves as the input end of the first controllable switch or the second controllable switch, and the other non-control pole of the bidirectional MOS transistor serves as the output end of the first controllable switch or the second controllable switch.

[0070] In the present utility model, the first controllable switch or the second controllable switch can adopt a bidirectional MOS transistor. By controlling the bidirectional MOS transistor to conduct, the charging process of the battery is further controlled. In addition, the bidirectional MOS transistor also has the advantages of high input resistance, low noise, and low power consumption.

[0071] As an optional embodiment, the number of the first bus standard interfaces 6 ≥ M; the number of the second bus standard interfaces 7 ≥ N.

[0072] In the present utility model, the number of the first bus standard interfaces 6 can be greater than or equal to M; the number of the second bus standard interfaces 7 can be greater than or equal to N. By setting the numbers of the first bus standard interfaces 6 and the second bus standard interfaces 7, the input cost can be reduced at the initial stage of constructing the two-wheel battery swapping power supply device, and in subsequent use, the numbers of the AC-DC modules 1 and the DC-DC modules 2 can be increased according to the increasing charging demand, optimizing the total cost of the system.

[0073] As an optional embodiment, it further includes: a first acquisition device and a controller;

[0074] The acquisition end of the first acquisition device is connected to t batteries, and is used for acquiring the voltage value and / or the charging current value and / or the temperature value of the t batteries;

[0075] The first input end of the controller is connected to the output end of the first acquisition device, and the first control end is connected to the control ends of the first switch array 3 and / or the second switch array 4, and is used for controlling the first switch array 3 and / or the second switch array 4 to perform corresponding opening or closing based on the voltage value and / or the charging current value and / or the temperature value.

[0076] In the present utility model, considering the safety problem of the battery during the charging process, a first acquisition device and a controller are further provided in the two-wheel battery swapping power supply device. In actual use, the first switch array 3 and / or the second switch array 4 can perform the switching of corresponding circuits based on manual or controller control, so that the first acquisition device can acquire the charging parameters of the battery when multiple different circuits are working. Among them, the first acquisition device can acquire one or more parameters of the voltage value, the charging current value, and the temperature value of the t batteries, and transmit the acquired respective parameters to the controller, facilitating the controller to perform corresponding opening or closing on the first switch array 3, or the second switch array 4, or the first switch array 3 and the second switch array 4 according to the safety requirements of each parameter, improving the safety of the solution and facilitating actual detection.

[0077] It should be noted that in actual applications, an additional display device and several alarm devices can also be provided. The acquisition end of the display device is connected to the acquisition device, and its function is to perform corresponding display on the voltage value and / or the charging current value and / or the temperature value of the acquired battery, facilitating the actual viewing of the user; the number of the alarm devices can be one or multiple. The alarm devices are connected to the controller and are used for receiving the alarm signal transmitted by the controller when the above respective parameters exceed their corresponding preset ranges and performing corresponding alarms. The alarms can be display alarms, or sound alarms, or display alarms and sound alarms. By making corresponding alarms for the fault conditions of each parameter, it is convenient for the user to understand whether corresponding faults occur during the battery charging process.

[0078] Such as Figure 4As shown, if 5 batteries need to be charged successively, within a certain period of time, the charging path of battery 1 through switches SW1 and SW11 is charged by the first DC-DC module 2. When the detection control module detects that battery 1 has been fully charged, that is, when it detects that its charging current drops to a preset value, switch SW11 is disconnected. At the same time, if battery 2 has not been charged yet, the detection control module controls the switch array to turn on SW21 and keeps switch SW1 on, then the charging path of the first DC-DC module 2 can be switched from battery 1 to battery 2.

[0079] As Figure 4 shown, if 5 batteries need to be charged successively, at a certain moment, the first DC-DC module 2 finishes charging battery 1 through switches SW1 and SW11, and control switches SW1 and SW11 are disconnected. At the same moment, battery 2 is being charged, and the second DC-DC module 2 charges it via switches SW2 and SW22. At the same time, the output power of the second DC-DC module 2 cannot meet the charging requirement of battery 2. Then, when the controller detects that the charging requirement of battery 2 is not met, switches SW1 and SW12 are turned on, and switches SW2 and SW22 are also kept on. Then, the first DC-DC module 2 and the second DC-DC module 2 can charge battery 2 simultaneously through two charging paths.

[0080] As an optional embodiment, it further includes:

[0081] A second acquisition device, the acquisition end of the second acquisition device is connected to N DC-DC modules 2, and is used to acquire the fault parameters of the N DC-DC modules 2;

[0082] Correspondingly, the second input end of the controller is connected to the output end of the second acquisition device, and the second control end is connected to the control end of the first switch array 3 and / or the control end of the second switch array 4, and is used to control the first switch array 3 and / or the second switch array 4 to perform corresponding opening or closing based on the fault parameters.

[0083] In the present utility model, considering the safety issues during the operation of the DC-DC module 2, a second acquisition device is further provided in the two-wheel battery swapping power supply device. The function of the second acquisition device is to acquire the fault parameters of N DC-DC modules 2 and transmit the acquired multiple fault parameters to the controller, so that the controller can detect the respective conditions of the N DC-DC modules 2 according to the fault parameters. If any one or more of the N DC-DC modules 2 fail, the controller will timely control the first switch array 3, or the second switch array 4, or the first switch array 3 and the second switch array 4 to perform corresponding opening or closing, improving the safety of the solution. And when the faulty DC-DC module 2 is repaired, the controller can also automatically control the first switch array 3, or the second switch array 4, or the first switch array 3 and the second switch array 4 to close, which is convenient for practical applications.

[0084] As Figure 4 shown, if the first DC-DC module 2 fails, the switch SW1 connected thereto is controlled to disconnect. At the same time, if the first DC-DC module 2 was working normally before the fault and charged the battery 1 through the switches SW1 and SW11, then after the fault, while disconnecting SW1, SW2 and SW21 can be connected, so that the second DC-DC module 2 charges the battery 1 through the switch array. That is, the charging path of the battery 1 is switched from SW1 and SW11 before the fault to SW2 and SW21 after the fault, that is, the charging power module of the battery 1 is switched from the first DC-DC module 2 to the second DC-DC module 2.

[0085] It should be noted that in practical applications, N protection devices are further provided in the two-wheel battery swapping power supply device. Each protection device is correspondingly arranged between the output end of the DC-DC module 2 and the input end of the first switch array 3, and can disconnect when an overcurrent situation occurs in the corresponding circuit, improving the safety of the two-wheel battery swapping power supply device. And in practical applications, the protection device can be a fuse or other protection devices.

[0086] The present utility model also provides an embodiment corresponding to the two-wheel battery swapping power supply system, including: a power distribution cabinet, the two-wheel battery swapping power supply device as described above, and t batteries. The two-wheel battery swapping power supply device is respectively connected to the power distribution cabinet and the charging interfaces of the t batteries.

[0087] The two-wheel battery swapping power supply system provided in this embodiment corresponds to the above two-wheel battery swapping power supply device, so it has the same beneficial effects as the two-wheel battery swapping power supply device. Therefore, for the embodiments of the two-wheel battery swapping power supply system part, please refer to the description of the embodiments of the two-wheel battery swapping power supply device part, which will not be elaborated here for the time being.

[0088] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0089] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A two-wheel power supply device, characterized in that: include: M AC-DC modules, N DC-DC modules, a first switch array, a second switch array, M input terminal standard interfaces corresponding to the M AC-DC modules and M first bus standard interfaces, N second bus standard interfaces corresponding to the N DC-DC modules, and t charging interfaces; M, N, and t are all positive integers greater than 1; The M input-end standard interfaces are all connected to the power distribution cabinet via an AC bus, and are used to receive the AC power transmitted by the power distribution cabinet; The input ends of the M AC-DC modules are detachably connected to the M input end standard interfaces in a one-to-one correspondence, and are used to convert the AC power into corresponding DC power; The M first bus standard interfaces are detachably connected to the output ends of the M AC-DC modules in a one-to-one correspondence and are all connected to the DC bus; N second bus standard interfaces are all connected to the DC bus for receiving the DC power; The input ends of the N DC-DC modules are detachably connected to the N second bus standard interfaces in a one-to-one correspondence, and are used to transform the DC power to obtain the transformed DC power; The N input terminals of the first switch array are connected to the output terminals of the N DC-DC modules in a one-to-one correspondence; The N input ends of the second switch array are connected to the N output ends of the first switch array in a one-to-one correspondence, and the N*t output ends of the second switch array are connected to t charging interfaces respectively.

2. The two-wheel power supply device according to claim 1, characterized in that: The first switch array comprises: N first controllable switches; Any first controllable switch includes an input end and an output end, the input end of any first controllable switch is correspondingly connected to the output end of the DC-DC module, and the output end of any first controllable switch is correspondingly connected to the input end of the second switch array; Among them, when the two-wheel power exchange power supply device is working, at least one first controllable switch among the N first controllable switches is closed.

3. The two-wheel power supply device according to claim 2, characterized in that: The second switch array comprises: N*t second controllable switches; N*t second controllable switches are divided into N groups of switch modules, and each group of switch modules includes t second controllable switches; The input ends of any second controllable switches in each group of the switch modules are connected to each other, and are connected one-to-one with the N output ends of the first switch array as an input end of the second switch array; The output end of any one of the second controllable switches in each group of the switch modules is connected to t charging interfaces in a one-to-one correspondence; When the two-wheel power-changing power supply device is working, at least one of the second controllable switches connected to the closed first switch array is closed.

4. The two-wheel power supply device according to claim 3, characterized in that: The first controllable switch or the second controllable switch is a relay, a moving contact of a normally open contact of the relay serves as an input end of the first controllable switch or the second controllable switch, and a static contact of the normally open contact serves as an output end of the first controllable switch or the second controllable switch.

5. The two-wheel power supply device according to claim 3, characterized in that: The first controllable switch or the second controllable switch is a bidirectional MOS tube, one non-control electrode of the bidirectional MOS tube serves as an input end of the first controllable switch or the second controllable switch, and the other non-control electrode of the bidirectional MOS tube serves as an output end of the first controllable switch or the second controllable switch.

6. The two-wheel power supply device according to claim 1, characterized in that: The number of the first bus standard interfaces is ≥M; the number of the second bus standard interfaces is ≥N.

7. The two-wheel power supply device according to any one of claims 1 to 6, characterized in that: Also includes: a first acquisition device and a controller; The collection end of the first collection device is connected to t batteries, and is used to collect voltage values ​​and / or charging current values ​​and / or temperature values ​​of the t batteries; The first input end of the controller is connected to the output end of the first acquisition device, and the first control end is connected to the control end of the first switch array and / or the second switch array, and is used to control the first switch array and / or the second switch array to turn on or off accordingly based on the voltage value and / or the charging current value and / or the temperature value.

8. The two-wheel power supply device according to claim 7, characterized in that: Also includes: A second acquisition device, wherein the acquisition end of the second acquisition device is connected to the N DC-DC modules and is used to collect fault parameters of the N DC-DC modules; Correspondingly, the second input end of the controller is connected to the output end of the second acquisition device, and the second control end is connected to the control end of the first switch array and / or the control end of the second switch array, and is used to control the first switch array and / or the second switch array to be turned on or off accordingly based on the fault parameters.

9. A two-wheel power exchange power supply system, characterized in that: include: A power distribution cabinet, a two-wheel power supply device as described in any one of claims 1 to 8, and t batteries, wherein the two-wheel power supply device is respectively connected to the power distribution cabinet and the charging interfaces of the t batteries.

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