Charging system with flexible power scheduling and charging pile

Abstract

The utility model relates to the technical field of automobile charging, and discloses a charging system with flexible power scheduling and a charging pile, the charging system comprises a power charging module, the output end of which is respectively connected with the input ends of a plurality of output modules through a plurality of contactors; the output end of the output module is connected with the to-be-charged equipment, and the output module is used for outputting preset output power; and when the output module is closed through the preset number of contactors and is connected with the preset number of charging power modules, the output module outputs preset output power, the preset output power is determined by rated charging power of the to-be-charged equipment, and the preset number is determined by the preset output power and rated output power of the power charging modules. The plurality of power charging modules are respectively connected with the plurality of output modules through the contactors, so that each output module can flexibly call any one power charging module, the output power range is enlarged, and when the plurality of output modules work at the same time, frequent on-off of the contactors is avoided, and the service life of the contactors is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile charging, and in particular to a charging system and a charging pile with flexible power scheduling. Background Art

[0002] With the popularization of new energy vehicles and the increasing demand of users for charging speed and convenience, the market demand for high-power charging piles is also growing. At present, there is a demand for charging power of 600KW. In terms of charging voltage, it has reached the high voltage limit (1000V), and the charging power needs to be met by increasing the charging current (to 600A). In order to adapt to the 250A charging generally required on the market, in terms of technology, in addition to increasing the voltage platform to 800V or 1000V, high-current charging is also an important way to increase the charging power when the vehicle battery meets the requirements. The current super charging can reach a charging current of 400-600A. The conventional split charging system consists of a charging host and a charging terminal. In order to match the large stock of 250A fast charging terminals on the market, the single-channel output current design current carrying capacity of the charging host is 250A, which cannot meet the high-power output requirements of super charging. Utility Model Content

[0003] In view of this, the utility model provides a charging system and a charging pile with flexible power scheduling to solve the problem that the charging systems on the market cannot achieve flexible scheduling of the charging power module.

[0004] In a first aspect, the utility model provides a charging system with flexible power scheduling, the charging system comprising: a plurality of power charging modules, a plurality of contactors, and a plurality of output modules, wherein:

[0005] A power charging module, whose input end is connected to a power supply, and whose output end is connected to input ends of multiple output modules respectively through multiple contactors;

[0006] An output module, whose output end is connected to the device to be charged and is used to output a preset output power;

[0007] When the output module is closed through a preset number of contactors and connected to a preset number of charging power modules, the output module outputs a preset output power. The preset output power is determined by the rated charging power of the device to be charged, and the preset number is determined by the preset output power and the rated output power of the power charging module.

[0008] The utility model provides a charging system with flexible power scheduling, in which multiple power charging modules are connected to multiple output modules through a contactor respectively. Through the on and off of each contactor, each output module can flexibly call any one or more power charging modules, and the power range that can be output is increased. When multiple output modules work at the same time, frequent on and off of the contactor is avoided, thereby extending the life of the contactor.

[0009] In an optional implementation, the power of the power charging module is 30KW, and the number of the power charging modules is twenty-four.

[0010] In an optional implementation, the power of the power charging module is 40KW, and the number of the power charging modules is eighteen.

[0011] The utility model provides a charging system with flexible power scheduling. The power size of the power charging module can be arbitrarily selected, and the number of power supply power modules is configured accordingly, ensuring that when multiple output modules arbitrarily schedule multiple power charging modules, the super-charging 600KW power output requirement can be met.

[0012] In an optional implementation, the threshold value of the output power of the output module is 240 KW.

[0013] The utility model provides a charging system with flexible power scheduling. The output power threshold of the output module is designed and produced according to existing standards, which reduces the non-standard proportion and the transformation cost. The output power threshold is set for the output module to ensure the safety of electricity use.

[0014] In an optional embodiment, the charging system further includes:

[0015] The bus has an input end connected to the output ends of multiple output modules and an output end connected to the device to be charged. It is used to aggregate the output power of the output modules and charge the device to be charged.

[0016] The charging system with flexible power scheduling provided by the utility model utilizes a bus to aggregate the output power of the output modules, reduces the non-standard proportion without changing the output cable specifications of the output modules, and realizes high-power output through the bus to meet the requirements of a 600KW supercharging terminal.

[0017] In an optional embodiment, when the total output power of the bus is 600KW, the output ends of the three power charging modules are connected to the bus together, the preset output power of each output module is 200KW, and each output module arbitrarily calls seven different power charging modules, and the power of the power charging module is 30KW.

[0018] In an optional embodiment, when the total output power of the bus is 600KW, the output ends of the three power charging modules are connected to the bus together, the preset output power of each output module is 200KW, and each output module arbitrarily calls five different power charging modules, and the power of the power charging module is 40KW.

[0019] The charging system with flexible power scheduling provided by the utility model can select different numbers of power charging modules according to the total power output requirement of the bus and the rated power of each power module. The power calling is more flexible and the output power undertaken by each output module is evenly distributed to ensure power balance and safety.

[0020] In a second aspect, the utility model provides a charging pile, the charging pile comprising: at least one charging system according to any one of the first aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an existing charging system according to an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a charging system with flexible power scheduling according to an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of another charging system with flexible power scheduling according to an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of a charging pile according to an embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] To increase the charging power, the current practices in the industry are: (1) Use 40KW or higher modules to replace the existing 30KW modules. The output power of a single cabinet can reach more than 320KW, which cannot meet the 600KW charging. The output current is greater than 250A, and non-standard modification is required; (2) Multiple outputs are connected in parallel to achieve high power output, such as Figure 1 As shown, the existing solution is to use the form of parallel connection of small-power charging hosts for power scheduling, such as using three 240KW charging hosts (each charging host includes eight 30KW power charging modules) to achieve a 720KW power pool, with one 600KW supercharging terminal and four 250KW fast charging terminals. However, the existing solution is not flexible in scheduling modules. When the charging modules of the first charging host and the second charging host are all used to support the output of a supercharging gun, and the third host has three free charging modules, the free charging modules of the third host cannot be called for the fast charging gun of the first host or the second host. In order to use the free charging modules of the third host for the fast charging gun of the first host or the second host, power switching is required, which is prone to short-term power instability of the supercharging gun and frequent operation of the switching contactor.

[0028] In order to solve the above problems, the embodiments of the utility model provide a charging system and a charging pile with flexible power scheduling, which achieves the effect of flexibly calling the power charging modules by designing a high-power pool composed of multiple power charging modules.

[0029] According to an embodiment of the utility model, a charging system embodiment with flexible power scheduling is provided, such as Figure 2 As shown, the charging system includes: multiple power charging modules 1, multiple contactors 2, and multiple output modules 3, wherein: Figure 2 Take 24 power charging modules, 288 contactors, and 12 output modules as an example.

[0030] like Figure 2 As shown, the power charging module 1 has its input end connected to the power supply, and its output end is connected to the input ends of multiple output modules 3 through multiple contactors 2.

[0031] Specifically, the power charging module 1 is located inside the charging host. Different models of the power charging modules 1 have different output powers. Each charging power module is connected to multiple output modules 3 through multiple contactors 2. However, the power charging module 1 can only be connected to one output module 3 at the same time to provide power to it, that is, it cannot provide power to multiple output modules 3 at the same time.

[0032] like Figure 2 As shown, the output module 3 has an output end connected to the device to be charged, and is used to output a preset output power.

[0033] Specifically, the output module 3 can arbitrarily call multiple power charging modules 1 by closing the contactor 2. The output power of the output module 3 is equal to the sum of the output powers of the multiple power charging modules 1. For example, when the output power of the power charging module 1 is 30KW, when the output module 3 calls two power charging modules 1, the output power of the output module 3 is 60KW. When the output module 3 calls 20 power charging modules 1, the output power of the output module 3 is 600KW. At this time, the output demand of the supercharging gun can be met. This is just an example, but it is not limited to this.

[0034] When the output module 3 is closed through a preset number of contactors 2 and connected to a preset number of charging power modules, the output module 3 outputs a preset output power, the preset output power is determined by the rated charging power of the device to be charged, and the preset number is determined by the preset output power and the rated output power of the power charging module 1.

[0035] Specifically, in actual use, the device to be charged is usually an electric car, and the charging power of the electric car may be: 30KW, 60KW, 100KW, 150KW, 200KW, 600KW. The power output of the charging host can be through a fast charging gun or a super charging gun to meet the charging needs of electric cars with different charging powers. When the charging power of the electric car is 200KW and the output power of the power charging module 1 in the charging host is 30KW, the fast charging gun is used to call 7 power charging modules 1 to meet the output power demand of the fast charging gun; when the charging power of the electric car is 600KW and the output power of the power charging module 1 in the charging host is 30KW, the super charging gun is used to call 20 power charging modules 1 to meet the output power demand of the super charging gun.

[0036] Figure 2 In the embodiment, contactor 2 is connected to the control system in the charging host and is closed or opened according to the control system software control program. The logic of the software control program can be implemented using an existing control program and will not be described in detail here.

[0037] The utility model provides a charging system with flexible power scheduling, in which multiple power charging modules 1 are respectively connected to multiple output modules 3 through a contactor 2. Through the on and off of each contactor 2, each output module 3 can flexibly call any power charging module 1, and the power range that can be output is increased. When multiple output modules 3 work at the same time, frequent on and off of the contactor 2 is avoided, thereby extending the life of the contactor 2.

[0038] In some optional embodiments, the power of the power charging module 1 is 30KW, and the number of the power charging modules 1 is twenty-four.

[0039] Specifically, a power pool with a total power of 720KW is composed of twenty-four 30KW power charging modules. While meeting the maximum charging power requirement of 600KW, it can also meet the output requirements of the remaining charging powers, making it more flexible to use.

[0040] In some optional embodiments, the power of the power charging module 1 is 40KW, and the number of the power charging modules 1 is eighteen.

[0041] Specifically, since the current maximum charging power of electric vehicles is 600KW, the maximum output of the supercharging gun can be 600KW, and the total power of all power charging modules 1 in the charging host can be greater than 600KW. For the convenience of design, the total power is designed to be 720KW. When the supercharging gun is working, the remaining power charging module 1 can also charge other low-power charging electric vehicles, which is more flexible to use.

[0042] like Figure 2 As shown, when the supercharger gun calls the first 20 power charging modules 1, the fourth fast charging gun can directly call the last 4 power charging modules 1 to output low power. To ensure that the fourth fast charging gun can charge quickly, there is no need to change the on-off state of different contactors 2, so that the supercharger gun calls the last 20 power charging modules 1 and the fourth fast charging gun calls the first 4 power charging modules 1, avoiding the process of repeated switching of the contactor 2 and extending the life of the contactor 2.

[0043] Optionally, the power of the power charging module 1 is 60KW, and the number of the power charging modules 1 is twelve, which is only taken as an example but not limited thereto.

[0044] The charging system with flexible power scheduling provided in this embodiment can arbitrarily select the power size of the power charging module 1, and the number of power supply power modules is configured accordingly to ensure that when multiple output modules 3 arbitrarily schedule multiple power charging modules 1, the supercharging 600KW power output requirement can be met.

[0045] In some optional implementations, the threshold of the output power of the output module 3 is 240KW.

[0046] Specifically, the output power of the output module 3 adopts a standard 250A interface, that is, its output power threshold is 240KW, which meets the needs of fast charging, has a small amount of adaptation to super charging, and is more flexible to use. When super charging power output is required, that is, when outputting 600KW, the output power of the output ends of the three output modules 3 can be obtained by combining them.

[0047] In the charging system with flexible power scheduling provided in this embodiment, the output power threshold of the output module 3 is designed and produced according to existing standards, which reduces the non-standard proportion and the transformation cost. By setting the output power threshold for the output module, the safety of electricity use is ensured.

[0048] In some optional embodiments, such as Figure 3 As shown, the charging system also includes:

[0049] like Figure 3 As shown, the bus 4 has an input end connected to the output ends of multiple output modules 3 and an output end connected to the device to be charged, and is used to aggregate the output power of the output modules 3 to charge the device to be charged.

[0050] Specifically, the busbar 4 may be a copper busbar with wiring terminals, or may be a standardized product, which is only taken as an example but not limited thereto.

[0051] The charging system with flexible power scheduling provided in this embodiment uses the bus 4 to aggregate the output power of the output module 3. Without changing the output cable specifications of the output module 3, the non-standard proportion is reduced, and high-power output is achieved through the bus 4 to meet the requirements of the 600KW supercharging terminal.

[0052] In some optional embodiments, when the total output power of the bus 4 is 600KW, the output ends of the three power charging modules 1 are connected to the bus 4 in common, the preset output power of each output module 3 is 200KW, and each output module 3 arbitrarily calls seven different power charging modules 1, and the power of the power charging module 1 is 30KW.

[0053] In some optional embodiments, when the total output power of the bus 4 is 600KW, the output ends of the three power charging modules 1 are connected to the bus 4 in common, the preset output power of each output module 3 is 200KW, and each output module 3 arbitrarily calls five different power charging modules 1, and the power of the power charging module 1 is 40KW.

[0054] Specifically, the power of the power charging module 1 is 30KW or 40KW, which is only taken as an example but not limited thereto.

[0055] The charging system with flexible power scheduling provided in this embodiment selects to call different numbers of power charging modules 1 according to the total power output requirement of the bus 4 and the rated power of each power module. The power call is more flexible and the output power undertaken by each output module 3 is evenly distributed to ensure power balance and safety.

[0056] The utility model provides an embodiment of a charging pile, such as Figure 4As shown, the charging pile includes: at least one charging system of any one of the previous embodiments.

[0057] Specifically, when the charging pile includes multiple charging systems, each charging system can work independently, or according to the actual charging power demand, the power of different output modules of different charging systems can be aggregated and output through a bus, and different power charging modules in different charging systems can be called. This is only an example, but not limited to this.

[0058] Specifically, except for the above-mentioned power flexible calling charging system, the rest of the charging pile can be realized by existing technologies and will not be elaborated here.

[0059] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A charging system with flexible power scheduling, characterized in that: The charging system includes: a plurality of power charging modules, a plurality of contactors, and a plurality of output modules, wherein: A power charging module, whose input end is connected to the power supply, and whose output end is connected to the input ends of the plurality of output modules respectively through a plurality of contactors; An output module, whose output end is connected to the device to be charged and is used to output a preset output power; When the output module is closed through a preset number of contactors and connected to a preset number of charging power modules, the output module outputs a preset output power, the preset output power is determined by the rated charging power of the device to be charged, and the preset number is determined by the preset output power and the rated output power of the power charging module.

2. The charging system according to claim 1, characterized in that: The power of the power charging module is 30KW, and the number of the power charging modules is twenty-four.

3. The charging system according to claim 1, characterized in that: The power of the power charging module is 40KW, and the number of the power charging modules is eighteen.

4. The charging system according to claim 1, characterized in that: The output power threshold of the output module is 240KW.

5. The charging system according to claim 2 or 3, characterized in that: The charging system further comprises: A bus, whose input end is connected to the output ends of the plurality of output modules and whose output end is connected to the device to be charged, is used to aggregate the output power of the output modules to charge the device to be charged.

6. The charging system according to claim 5, characterized in that: When the total bus output power is 600KW, the output ends of the three power charging modules are connected to the bus together, the preset output power of each output module is 200KW, and each output module arbitrarily calls seven different power charging modules, and the power of the power charging module is 30KW.

7. The charging system according to claim 5, characterized in that: When the total bus output power is 600KW, the output ends of the three power charging modules are connected to the bus together, the preset output power of each output module is 200KW, and each output module arbitrarily calls five different power charging modules, and the power of the power charging module is 40KW.

8. A charging pile, characterized in that: The charging pile comprises: at least one charging system according to any one of claims 1 to 7.

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