Charging system and device, and charging station

Abstract

A charging system and device, and a charging station. The charging system comprises a plurality of first power modules (10) and a plurality of first switch units (20). Each first power module (10) is provided with an output bus (11), and each first power module (10) is connected, by means of the output bus (11), to a charging gun of a terminal (12) to be powered. The output buses (11) of any two first power modules (10) in a first power group (A) are connected by means of one first switch unit (20); and the output buses (11) of any two first power modules (10) in a second power group (B) are connected by means of another first switch unit (20). The first switch unit (20) connected between every two output buses (11) is different. The plurality of first power modules (10) are ordered sequentially; the first power group (A) comprises the first power modules (10) in odd-numbered positions, and the second power group (B) comprises the first power modules (10) in even-numbered positions. Also provided is a charging system capable of reducing the number of switch units therein.

Description

Charging systems and devices, charging stations

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 19, 2023, with application number 202311750476.2 and invention name “Charging system and device, charging station”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of charging piles, and in particular to a charging system and device, and a charging station. Background Art

[0003] With the advancement of modern technology, electric vehicles are becoming increasingly popular, leading to a growing emphasis on charging systems for these devices. In prior art multi-gun high-power charging systems, achieving fully flexible power distribution often relies on stacked power distribution contactors, resulting in an excessive number of contactors and high costs.

[0004] Summary of the Invention

[0005] Based on this, it is necessary to provide a charging system, device, and charging station that can reduce the number of contactors in the charging system in order to address the above technical problems.

[0006] In a first aspect, the present application provides a charging system. The charging system comprises:

[0007] a plurality of first power modules and a plurality of first switch units;

[0008] Each of the first power modules is configured with an output bus, and each of the first power modules is connected to a charging gun of a terminal to be powered via the output bus; wherein,

[0009] The output buses of any two of the first power modules in the first power group are connected via a first switch unit;

[0010] The output buses of any two of the first power modules in the second power group are connected via another first switch unit; wherein,

[0011] The first switch units connected between the two output busbars are different;

[0012] The plurality of first power modules are sequentially arranged in sequence. The first power group includes first power modules that are arranged in odd numbers, and the second power group includes first power modules that are arranged in even numbers.

[0013] In one embodiment, the charging system further comprises:

[0014] a plurality of second switch units;

[0015] at least one second power module, wherein a plurality of connection terminals of the second power module are respectively connected to an output busbar of each first power module in the first power group via a second switch unit; wherein the output busbars connected to the second switch units connected to the second power modules are different;

[0016] At least one third power module, wherein the multiple connection ends of the third power module are respectively connected to the output bus of each first power module in the second power group through another second switch unit; wherein the output bus connected to the second switch unit connected to the third power module is different.

[0017] In one embodiment, the output power of the second power module and the third power module is the same.

[0018] In one embodiment, each of the second power modules and each of the third power modules are respectively configured with a target output bus with the highest power supply priority, wherein the target output bus of each of the second power modules is different from the target output bus of each of the third power modules.

[0019] In one embodiment, the plurality of first power modules are divided into a plurality of power pairs according to a sorting order, each power pair includes two first power modules, and the output powers of the two first power modules in each power pair are different.

[0020] In one embodiment, the output power of the first power module with an even number in each power pair is higher than the output power of the first power module with an odd number.

[0021] In one embodiment, the output power of the even-numbered first power module in each power pair is twice the output power of the odd-numbered first power module.

[0022] In one embodiment, each of the first power modules includes at least one power unit; the output power of each of the power units is the same; wherein,

[0023] The number of the power cells included in the first power module with an even ranking in each of the power pairs is greater than the number of the power cells included in the first power module with an odd ranking.

[0024] In one embodiment, the multiple first power modules are divided into multiple power pairs according to the sorting order, and the output busbars of the two first power modules in each power pair are respectively used to connect to two charging guns of a common charging terminal.

[0025] In one embodiment, the multiple first power modules are divided into multiple power pairs in sorting order, and the output busbars of two first power modules in each power pair are connected, wherein the connection node of the two output busbars is used to connect to the charging gun of the liquid-cooled charging terminal.

[0026] In one embodiment, the charging system further includes a plurality of third switch units; wherein the plurality of first power modules are divided into a plurality of power pairs in sorting order, and the output busbars of the two first power modules in each of the power pairs are connected through a second switch unit, wherein the two output busbars are respectively used to connect to a common charging gun and a liquid-cooled charging gun of the hybrid charging terminal.

[0027] In one embodiment, the charging system further comprises:

[0028] A control device is connected to each of the first switch units and each of the third switch units, and is used to control the on and off states of each of the first switch units and each of the third switch units.

[0029] In one embodiment, the control device is further configured to control the corresponding second switch unit to be turned on when the liquid-cooled charging gun is started first;

[0030] When the common charging gun is started first, the corresponding second switch unit is controlled to be closed.

[0031] In one embodiment, the first switch unit, the second switch unit and / or the third switch unit include a contactor, a circuit breaker or an isolating switch.

[0032] In one embodiment, the output busbar includes a copper busbar, an aluminum busbar, or a cable.

[0033] In a second aspect, the present application further provides a charging device, which includes the charging system in any of the above embodiments.

[0034] In a third aspect, the present application further provides a charging station, which includes the charging system in any of the above embodiments.

[0035] The charging system and device, and the charging station include a plurality of first power modules and a plurality of first switch units, wherein the first switch unit is, for example, a first contactor. The multiple first power modules are arranged in sequence, each first power module is configured with an output busbar, and each first power module is connected to a charging plug of a terminal to be powered via an output busbar. The output busbars of any two odd-numbered first power modules are connected via a first switch unit, and the output busbars of any two even-numbered first power modules are connected via another first switch unit. As a result, any two odd-numbered first power modules in the charging system can transfer electric energy to each other, and any two even-numbered first power modules can transfer electric energy to each other, thereby achieving flexible power distribution of the charging system. Since the embodiment of the present application only requires a first switch unit to be provided between the output busbars of any two odd-numbered first power modules and a first switch unit to be provided between the output busbars of any two even-numbered first power modules, the number of first switch units required to achieve flexible power distribution of the charging system is relatively small. Compared with the charging system in the related art, which often achieves fully flexible power distribution by stacking power distribution switch units, the charging system provided by the embodiment of the present application reduces the number of switch units provided in the charging system, that is, reduces the number of contactors provided in the charging system, thereby reducing the cost of the charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic structural diagram of a charging system according to an embodiment;

[0037] FIG2 is a schematic structural diagram of a charging system according to an embodiment;

[0038] FIG3 is a schematic structural diagram of a charging system according to an embodiment;

[0039] FIG4 is a schematic structural diagram of a charging system according to an embodiment;

[0040] FIG5 is a schematic structural diagram of a charging system according to an embodiment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] The charging system provided in the embodiments of the present application can be used to charge electric vehicles. As shown in FIG1 , a charging system is provided, which can be installed in a power cabinet. In one embodiment, the charging system includes a plurality of first power modules 10 and a plurality of first switch units 20.

[0043] Each first power module 10 is configured with an output bus 11, and each first power module 10 is connected to the charging gun of the terminal to be powered 12 via an output bus 11. The terminal to be powered 12 is, for example, an ordinary charging terminal or a liquid-cooled charging terminal of an electric vehicle. Among them, the first power module 10 can provide the electric energy required for charging to the terminal to be powered. The first power module 10 can specifically provide the electric energy required for charging to the terminal to be powered through the correspondingly configured output bus 11. The specific size of the output power of the first power module 10 can be configured according to actual needs. Among the multiple first power modules 10 provided in the charging system, the specific size of the output power of at least two first power modules 10 can be the same or different, and can be configured according to actual needs.

[0044] Among them, the multiple first power modules 10 are arranged in sequence, the first power group A includes the first power modules 10 with odd numbers, and the second power group B includes the first power modules 10 with even numbers. In the embodiment of the present application, the number of first power modules 10 provided in the charging system can be an odd number or an even number, and the embodiment of the present application does not specifically limit this. The multiple first power modules 10 provided in the charging system can be arranged in sequence, and all the first power modules 10 with odd numbers can be divided into the first power group A, and all the first power modules 10 with even numbers can be divided into the second power group B.

[0045] The first switch unit 20 may include a switch component. For example, the first switch unit 20 may be a first contactor. The output busbars 11 of any two first power modules 10 in the first power group A are connected via a first switch unit 20, and the output busbars 11 of any two first power modules 10 in the second power group B are connected via another first switch unit 20; wherein, the first switch units 20 connected between the two output busbars 11 are different. In an embodiment of the present application, the output busbars 11 of any two first power modules 10 in the first power group A are connected via a first switch unit 20, and the output busbars 11 of any two first power modules 10 in the second power group B are connected via another first switch unit 20. When the first switch unit 20 connecting the two output busbars 11 is turned on, the two output busbars 11 are connected. When the first switch unit 20 connecting the two output busbars 11 is turned off, the two output busbars 11 are disconnected. In this way, according to the on and off of the corresponding first switch unit 20, any two first power modules 10 with odd numbers in the charging system can call each other for electric energy, and any two first power modules 10 with even numbers in the charging system can call each other for electric energy, thereby realizing flexible power distribution of the charging system.

[0046] For example, referring to FIG1 , the charging system includes first power modules 10 No. 1 to No. 8 arranged in sequence; the first power group A may include first power modules 10 No. 1, No. 3, No. 5 and No. 7, and the output busbars 11 of any two first power modules 10 among the first power modules 10 No. 1, No. 3, No. 5 and No. 7 are connected via a first switch unit 20. Thus, according to the on / off of the corresponding first switch unit 20, any two first power modules 10 among the first power modules 10 No. 1, No. 3, No. 5 and No. 7 can be electrically connected. The second power group B includes the first power modules 10 No. 2, No. 4, No. 6 and No. 8, and the output busbars 11 of any two first power modules 10 among the first power modules 10 No. 2, No. 4, No. 6 and No. 8 are connected via another first switch unit 20. In this way, according to the on and off of the corresponding first switch unit 20, the electric energy can be called from any two first power modules 10 among the first power modules 10 No. 2, No. 4, No. 6 and No. 8; thereby, flexible power distribution of each first power module 10 in the charging system is realized.

[0047] In an embodiment of the present application, a plurality of first power modules 10 and a plurality of first switch units 20 are provided in the charging system, wherein the plurality of first power modules 10 are arranged in sequence, and each first power module 10 is configured with an output bus 11. The output busbars 11 of any two odd-numbered first power modules 10 are connected via a first switch unit 20, and the output busbars 11 of any two even-numbered first power modules 10 are connected via another first switch unit 20. Thus, in the charging system, any two odd-numbered first power modules 10 can mutually call electric energy, and any two even-numbered first power modules 10 can mutually call electric energy, thereby realizing flexible power distribution of the charging system. Since the embodiment of the present application only requires setting a first switch unit 20 between the output busbars 11 of any two first power modules 10 with odd order, and setting a first switch unit 20 between the output busbars 11 of any two first power modules 10 with even order, the number of first switch units 20 required in the process of realizing flexible power distribution of the charging system is relatively small. Compared with the charging system in the related art that often realizes full flexible power distribution by stacking power distribution switch units, the charging system provided by the embodiment of the present application reduces the number of switch units set in the charging system and reduces the cost of the charging system.

[0048] In one embodiment, as shown in FIG. 2 , based on the above embodiment, the charging system further includes a plurality of second switch units 30 , at least one second power module 40 and at least one third power module 50 .

[0049] The second switch unit 30 may include a switching component; for example, the second switch unit 30 may be a second contactor. The multiple connection terminals of the second power module 40 are connected to the output busbar 11 of each first power module 10 in the first power group A via a respective second switch unit 30; the second switch unit 30 connected to the second power module 40 is connected to a different output busbar 11. The multiple connection terminals of the third power module 50 are connected to the output busbar 11 of each first power module 10 in the second power group B via another second switch unit 30; the second switch unit 30 connected to the third power module 50 is connected to a different output busbar 11.

[0050] The first power module 10, the second power module 40, and the third power module 50 can be power modules having the same structure and can all provide the power required for charging the terminal to be powered. The specific output power of at least two of the first power module 10, the second power module 40, and the third power module 50 can be the same or different, and can be configured according to actual needs.

[0051] In an embodiment of the present application, the multiple connection ends of the second power module 40 are respectively connected to the output bus 11 of each first power module 10 in the first power group A via a second switch unit 30, that is, the multiple connection ends of the second power module 40 are respectively connected to the output bus 11 of each odd-numbered first power module 10 in the charging system via a second switch unit 30, so that according to the on and off of the corresponding second switch unit 30, the charging gun connected to any odd-numbered first power module 10 can call for electric energy from the second power module 40, thereby increasing the maximum output power of the charging gun connected to the odd-numbered first power module 10. The multiple connection ends of the third power module 50 are respectively connected to the output bus 11 of each first power module 10 in the second power group B via another second switch unit 30, that is, the multiple connection ends of the third power module 50 are respectively connected to the output bus 11 of each even-numbered first power module 10 in the charging system via another second switch unit 30, so that according to the on and off of the corresponding second switch unit 30, the charging gun connected to any even-numbered first power module 10 can call for electric energy from the third power module 50, thereby increasing the maximum output power of the charging gun connected to the even-numbered first power module 10.

[0052] For example, referring again to FIG. 2 , the charging system includes first power modules 10, numbered 1 through 8, arranged sequentially, two second power modules 40, and two third power modules 50. Since four of the first power modules 10 are odd-numbered, each second power module 40 can provide four corresponding connection terminals. Each of the four connection terminals of the second power module 40 is connected to the output busbars 11 of the four odd-numbered first power modules 10 via a second switch unit 30. Consequently, depending on the on / off state of the corresponding second switch unit 30, the charging station connected to any odd-numbered first power module 10 can draw power from at least one second power module 40. For example, the charging station connected to first power module 10 1 can draw power from two second power modules 40 simultaneously, thereby increasing the maximum output power of the charging station connected to first power module 10 1. Similarly, since four of the first power modules 10, numbered 1 to 8, are even-numbered, each third power module 50 can correspondingly extend four connection terminals. The four connection terminals of each third power module 50 are connected to the output busbars 11 of four even-numbered first power modules 10 via another second switch unit 30. Thus, depending on the on / off switching of the corresponding second switch unit 30, the charging cable connected to any even-numbered first power module 10 can draw power from at least one third power module 50. For example, the charging cable connected to first power module 10, numbered 2, can draw power from two third power modules 50 simultaneously, thereby increasing the maximum output power of the charging cable connected to first power module 10, numbered 2.

[0053] In the embodiment of the present application, the first power module 10 can be regarded as a direct-connected power module directly connected to the terminal to be powered, and the second power module 40 and the third power module 50 can be regarded as free power modules, that is, free power modules. Based on the call of electric energy from the free power modules, the maximum output power of the charging gun can be increased, and the fully flexible power distribution of the charging system can be better realized.

[0054] In one embodiment, the output power of the second power module 40 and the third power module 50 are the same. For example, the output power of the second power module 40 and the third power module 50 are both 30 kW.

[0055] In this embodiment, by setting the output power of the second power module 40 and the third power module 50 to be the same, the first power module 10 with an odd number and the first power module 10 with an even number in the charging system can respectively call on the same amount of electric energy from the corresponding free power modules to increase their own maximum output power to the same extent, which is conducive to achieving the same amount of maximum output power.

[0056] In one embodiment, each second power module 40 and each third power module 50 is respectively configured with a target output bus with the highest power supply priority, wherein the target output bus of each second power module 40 is different from the target output bus of each third power module 50.

[0057] Specifically, the second power module 40 can give priority to supplying power to the target output bus with the highest power supply priority configured for itself, and the third power module 50 can give priority to supplying power to the target output bus with the highest power supply priority configured for itself. For example, continuing to refer to Figure 2, the output bus corresponding to the second power module 40 can be the output bus corresponding to the No. 1, No. 3, No. 5 or No. 7 first power module 10, and among the output busses 11 corresponding to the No. 1, No. 3, No. 5 or No. 7 first power module 10, one of the output busses 11 can be selected to be configured as the target output bus with the highest power supply priority for the second power module 40, so that the second power module 40 gives priority to supplying power to it.

[0058] For example, originally, as shown in Figure 2, each second power module 40 can supply power to the output bus 11 correspondingly configured for the first power module 10 No. 1, No. 3, No. 5 or No. 7. When the output bus 11 correspondingly configured for the first power module 10 No. 1 is configured as the target output bus with the highest power supply priority for one of the second power modules 40, during the power distribution process, the second power module 40 can give priority to supplying power to the output bus 11 correspondingly configured for the first power module No. 1; when the output bus 11 correspondingly configured for the first power module No. 5 is configured as the target output bus with the highest power supply priority for another second power module 40, during the power distribution process, the second power module 40 can give priority to supplying power to the output bus 11 correspondingly configured for the first power module No. 5.

[0059] Similarly, originally, as shown in Figure 2, each third power module 50 can supply power to the output bus 11 correspondingly configured to the first power module 10 No. 2, No. 4, No. 6 or No. 8. When the output bus 11 correspondingly configured to the first power module 10 No. 4 is configured as the target output bus with the highest power supply priority for one of the third power modules 50, during the power distribution process, the third power module 50 can give priority to supplying power to the output bus correspondingly configured to the first power module No. 4; when the output bus 11 correspondingly configured to the first power module No. 8 is configured as the target output bus with the highest power supply priority for another third power module 50, during the power distribution process, the third power module 50 can give priority to supplying power to the output bus 11 correspondingly configured to the first power module No. 8.

[0060] In an embodiment of the present application, each second power module 40 and each third power module 50 can be respectively configured with a target output bus with the highest power supply priority, so that power can be distributed preferentially to the target output bus with the corresponding highest priority, which is conducive to the charging system to flexibly distribute power to the terminal to be powered on demand.

[0061] In one embodiment, the plurality of first power modules 10 are divided into a plurality of power pairs according to a sorting order. Each power pair includes two first power modules 10 . The output powers of the two first power modules 10 in each power pair are different.

[0062] For example, with continued reference to FIG2 , the plurality of first power modules 10 may be divided into a plurality of power pairs in the sorted order: first power modules 10 No. 1 and No. 2 are divided into a power pair, first power modules 10 No. 3 and No. 4 are divided into a power pair, first power modules 10 No. 5 and No. 6 are divided into a power pair, and first power modules 10 No. 7 and No. 8 are divided into a power pair. The output power of first power module 10 No. 1 is different from the output power of first power module 10 No. 2, the output power of first power module 10 No. 3 is different from the output power of first power module 10 No. 4, the output power of first power module 10 No. 5 is different from the output power of first power module 10 No. 6, and the output power of first power module 10 No. 7 is different from the output power of first power module 10 No. 8.

[0063] In an embodiment of the present application, multiple first power modules 10 are divided into multiple power pairs according to the sorting order, and each power pair includes two first power modules 10. The output power of the two first power modules 10 in each power pair is different, which is conducive to the charging system to flexibly distribute power to the terminal to be powered on demand.

[0064] In one embodiment, the output power of the first power module 10 with an even number in each power pair is higher than the output power of the first power module 10 with an odd number.

[0065] In one embodiment, each first power module 10 includes at least one power cell; each power cell has the same output power. For example, the output power of the power cells is 15 kW, 20 kW, or 30 kW. In each power pair, the even-numbered first power modules 10 include a greater number of power cells than the odd-numbered first power modules 10.

[0066] In one embodiment, the output power of the even-numbered first power module 10 in each power pair is twice the output power of the odd-numbered first power module 10 .

[0067] In one embodiment, each first power module 10 includes at least one power cell; each power cell has the same output power. For example, the output power of the power cells is 15 kW, 20 kW, or 30 kW. The number of power cells included in the even-numbered first power modules 10 in each power pair is twice the number of power cells included in the odd-numbered first power modules 10.

[0068] In one embodiment, each second power module 40 and each third power module 50 may include a power unit; each power unit has the same output power, for example, 15 kW, 20 kW, or 30 kW.

[0069] The embodiment of the present application thus ensures that the first power module 10 with smaller output power can flexibly supply power to the terminal to be powered on demand, and the first power module 10 with larger output power can flexibly supply power to the terminal to be powered on demand.

[0070] For example, continuing to refer to Figure 2, the first power modules 10 No. 1 and No. 2 are divided into a power pair, the first power modules 10 No. 3 and No. 4 are divided into a power pair, the first power modules 10 No. 5 and No. 6 are divided into a power pair, and the first power modules 10 No. 7 and No. 8 are divided into a power pair.

[0071] Among them, the number of power cells in the first power module No. 2 10 is twice the number of power cells in the first power module No. 1 10, the number of power cells in the first power module No. 4 10 is twice the number of power cells in the first power module No. 3 10, the number of power cells in the first power module No. 6 10 is twice the number of power cells in the first power module No. 5 10, and the number of power cells in the first power module No. 8 10 is twice the number of power cells in the first power module No. 7 10.

[0072] For example, when the output power of the power unit is 30kW, the output powers of the first power modules 10 No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 7 and No. 8 are 30kW, 60kW, 60kW, 30kW, 30kW, 60kW, 60kW and 30kW respectively, the output powers of the two second power modules 40 are 30kW respectively, and the output powers of the two third power modules 50 are 30kW respectively; in this way, according to the power drawn from the two second power modules 40 and the two third power modules 50, the maximum output power of each charging gun can reach 240kW, and according to the power drawn between any two odd-numbered first power modules 10, and between any two even-numbered first power modules 10 In terms of electric energy retrieval, when all charging guns are charging at the same time, the minimum output power of each charging gun is 60kW, and the total number of the first switch units 20 and the second switch units 30 provided in the charging system is only 28, that is, the total number of the first contactors and the second contactors provided in the charging system is only 28. Compared with the charging system in the related art, in order to achieve full flexible power distribution, it is often achieved by stacking power distribution contactors. The charging system provided by the embodiment of the present application reduces the number of contactors set in the charging system, reduces the cost of the charging system, and at the same time, each charging gun can achieve a larger output power, each charging gun can output the same output power at the same time, and ensures a smaller granularity of the output power of the charging system, thereby realizing flexible power distribution of the charging system.

[0073] In an embodiment of the present application, each first power module 10 includes at least one power unit, the output power of each power unit is the same, and the number of power units included in the even-numbered first power modules 10 in each power pair is greater than the number of power units included in the odd-numbered first power modules 10, thereby ensuring a smaller granularity of the output power of the charging system to better realize flexible power distribution of the charging system, and ensuring that the charging system can meet the power requirements of the terminal to be charged.

[0074] In one embodiment, as shown in FIG3 , the plurality of first power modules 10 are divided into a plurality of power pairs in sorting order, and the output busbars 11 of the two first power modules 10 in each power pair are respectively used to connect to two common charging guns 60 of a common charging terminal.

[0075] In the embodiments of the present application, in certain operating scenarios, electric vehicles that do not support liquid-cooled supercharging are not involved, and the charging system only needs to be able to provide the required electrical energy for charging to ordinary charging terminals. To this end, multiple first power modules 10 can be divided into multiple power pairs in sorting order, and the output busbars 11 of the two first power modules 10 in each power pair are respectively connected to the two ordinary charging guns 60 of the ordinary charging terminal.

[0076] In one embodiment, as shown in Figure 4, multiple first power modules 10 are divided into multiple power pairs in sorting order, and the output busbars 11 of two first power modules 10 in each power pair are connected, wherein the connection node A of the two output busbars 11 is used to connect to the liquid-cooled charging gun 70 of the liquid-cooled charging terminal.

[0077] In certain operating scenarios, the embodiments of the present application only involve electric vehicles that support liquid-cooled supercharging. The charging system needs to be able to provide the liquid-cooled charging terminal with the required electrical energy for charging. To this end, multiple first power modules 10 can be divided into multiple power pairs in sorting order. The output busbars 11 of the two first power modules 10 in each power pair are connected, and the connection node A of the two output busbars 11 is connected to the liquid-cooled charging gun 70 of the liquid-cooled charging terminal, so as to achieve the ultra-high power output required by the liquid-cooled charging gun 70.

[0078] In one embodiment, as shown in Figure 5, the charging system also includes multiple third switch units 80; wherein, the multiple first power modules 10 are divided into multiple power pairs according to the sorting order, and the output busbars 11 of the two first power modules 10 in each power pair are connected through a third switch unit 80, wherein the two output busbars 11 are respectively used to connect to the ordinary charging gun 60 and the liquid-cooled charging gun 70 of the hybrid charging terminal.

[0079] In certain operating scenarios, the number of electric vehicles supporting liquid-cooled supercharging is relatively small. To ensure the efficiency of the charging system and a sufficient number of charging guns, the conventional charging gun 60 and the liquid-cooled charging gun 70 can be combined into one, forming a hybrid charging terminal. This allows the charging system to provide both the conventional charging gun 60 and the liquid-cooled charging gun 70 with the required electrical energy.

[0080] In one embodiment, as shown in FIG5 , the terminal to be powered includes a fourth switch unit 90 and a charging gun. The output bus 11 configured for each first power module 10 is connected to the charging gun via a fourth switch unit 90. The fourth switch unit 90 may include a switching component. For example, the fourth switch unit 90 may be a fourth contactor.

[0081] In the embodiment of the present application, the first contactor included in the first switch unit 20 and the second contactor included in the second switch unit 30 can be contactors of the same specifications and type. The third contactor included in the third switch unit 80 can be a contactor of a different specifications and type from the first and second contactors; and the fourth contactor included in the fourth switch unit 90 can be a contactor of a different specifications and type from the first and second contactors.

[0082] In one embodiment, the charging system further includes a control device. The control device is connected to each first switch unit 20, each second switch unit 30, and each third switch unit 80, and is configured to control the on / off state of each first switch unit 20, each second switch unit 30, and each third switch unit 80. The control device is specifically configured to control the on / off state of each first switch unit 20, each second switch unit 30, and each third switch unit 80 based on the actual charging needs of the conventional charging gun 60 and / or the liquid-cooled charging gun 70.

[0083] In one embodiment, the control device is further configured to control the corresponding third switch unit 80 to conduct when the liquid-cooled charging gun 70 is activated first. The conventional charging gun 60 may then be in a waiting state, unable to provide charging services, and the liquid-cooled charging gun 70 achieves high-power output. If the conventional charging gun 60 is activated first, the corresponding third switch unit 80 is controlled to be closed, and the liquid-cooled charging gun 70 will reduce its power output. The liquid-cooled charging gun 70 can then function as a conventional charging gun 60, with a maximum output power substantially the same as that of the conventional charging gun 60.

[0084] In one embodiment, the first switch unit 20 , the second switch unit 30 and / or the third switch unit 80 include contactors, circuit breakers or disconnect switches.

[0085] In one embodiment, the output busbar 11 includes a copper busbar, an aluminum busbar, or a cable.

[0086] The present application also provides a charging device, which includes the charging system of any of the above embodiments. The charging device and the charging system are based on the same inventive concept and can achieve the same technical effects. The repeated contents will not be repeated here.

[0087] The present application also provides a charging station, which includes the charging system of any of the above embodiments. The charging station and the charging system are based on the same inventive concept and can achieve the same technical effects. The repeated contents will not be repeated here.

[0088] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A charging system, characterized in that: The charging system comprises: a plurality of first power modules and a plurality of first switch units; Each of the first power modules is configured with an output bus, and each of the first power modules is connected to a charging gun of a terminal to be powered via the output bus; wherein, The output busbars of any two of the first power modules in the first power group are connected via the first switch unit; The output busbars of any two of the first power modules in the second power group are connected via another first switch unit; wherein, The first switch units connected between the two output busbars are different; The plurality of first power modules are sequentially arranged in sequence. The first power group includes first power modules arranged in odd numbers, and the second power group includes first power modules arranged in even numbers.

2. The charging system according to claim 1, characterized in that: The charging system further comprises: a plurality of second switch units; at least one second power module, wherein a plurality of connection ends of the second power module are respectively connected to an output bus of each of the first power modules in the first power group via a second switch unit; wherein the output bus connected to the second switch unit connected to the second power module is different; At least one third power module, wherein the multiple connection ends of the third power module are respectively connected to the output bus of each of the first power modules in the second power group via another second switch unit; wherein the output bus connected to the second switch unit connected to the third power module is different.

3. The charging system according to claim 2, characterized in that: The output power of the second power module is the same as that of the third power module.

4. The charging system according to claim 2, characterized in that: Each of the second power modules and each of the third power modules are respectively configured with a target output bus with the highest power supply priority, wherein the target output bus of each of the second power modules is different from the target output bus of each of the third power modules.

5. The charging system according to claim 1, characterized in that: The multiple first power modules are divided into multiple power pairs according to the sorting order, each of the power pairs includes two first power modules, and the output powers of the two first power modules in each power pair are different.

6. The charging system according to claim 5, characterized in that: The output power of the first power module with an even number in each of the power pairs is higher than the output power of the first power module with an odd number.

7. The charging system according to claim 6, characterized in that: The output power of the first power module with an even number in each of the power pairs is twice the output power of the first power module with an odd number.

8. The charging system according to claim 5, characterized in that: Each of the first power modules includes at least one power unit; the output power of each of the power units is the same; wherein, The number of the power cells included in the first power module with an even number in each of the power pairs is greater than the number of the power cells included in the first power module with an odd number.

9. The charging system according to claim 1, characterized in that: The multiple first power modules are divided into multiple power pairs according to the sorting order, and the output busbars of two first power modules in each power pair are respectively used to connect to two charging guns of a common charging terminal.

10. The charging system according to claim 1, characterized in that: The multiple first power modules are divided into multiple power pairs according to the sorting order, and the output busbars of two first power modules in each power pair are connected, wherein the connection node of the two output busbars is used to connect to the charging gun of the liquid-cooled charging terminal.

11. The charging system according to claim 1, characterized in that: The charging system also includes multiple third switch units; wherein the multiple first power modules are divided into multiple power pairs according to the sorting order, and the output busbars of two first power modules in each power pair are connected through a third switch unit, wherein the two output busbars are respectively used to connect to the ordinary charging gun and the liquid-cooled charging gun of the hybrid charging terminal.

12. The charging system according to claim 11, characterized in that: The charging system further comprises: A control device is connected to each of the first switch units, each of the second switch units and each of the third switch units, respectively, and is used to control the on and off states of each of the first switch units, each of the second switch units and each of the third switch units.

13. The charging system according to claim 12, characterized in that: The control device is also used to control the corresponding second switch unit to be turned on when the liquid-cooled charging gun is started first; When the common charging gun is started first, the corresponding second switch unit is controlled to be closed.

14. The charging system according to claim 1, characterized in that: The first switch unit, the second switch unit and / or the third switch unit include a contactor, a circuit breaker or a disconnector.

15. The charging system according to claim 1, characterized in that: The output busbar includes a copper busbar, an aluminum busbar or a cable.

16. A charging device, characterized in that: Comprising a charging system as described in any one of claims 1-15.

17. A charging station, characterized in that: Comprising a charging system as described in any one of claims 1-15.

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