CN117507912A

CN117507912A - Charging system, charging device and charging station

Info

Publication number: CN117507912A
Application number: CN202311750476.2A
Authority: CN
Inventors: 陈绍钦; 邢运东; 翟寄文; 夏伟; 陈连平
Original assignee: Sunshine Lechong Technology Co ltd
Current assignee: Sunshine Lechong Technology Co ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-02-06

Abstract

The application relates to a charging system and device and a charging station. The charging system includes: a plurality of first power modules and a plurality of first switching units; each first power module is provided with an output bus, and each first power module is connected with a charging gun of a terminal to be powered through an output bus; the output buses of any two first power modules in the first power group are connected through a first switch unit; the output buses of any two first power modules in the second power group are connected through another first switch unit; the first switch units connected between the two output buses are different; the plurality of first power modules are sequentially ordered in sequence, the first power group comprises the first power modules ordered as odd numbers, and the second power group comprises the first power modules ordered as even numbers. Accordingly, the present application provides a charging system capable of reducing the number of switching units in the charging system.

Description

Charging system, charging device and charging station

Technical Field

The application relates to the technical field of charging piles, in particular to a charging system, a charging device and a charging station.

Background

With the development of modern society technology, electric vehicles are increasingly used, and this makes the setting of a charging system for charging electric vehicles more and more important. In the multi-gun high-power charging system in the related art, in order to realize full-flexible power distribution, the power distribution is often realized by stacking power distribution contactors, so that the power distribution contactors are too many, and the cost is too high.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a charging system, a charging device, and a charging station that can reduce the number of contactors in the charging system.

In a first aspect, the present application provides a charging system. The charging system includes:

a plurality of first power modules and a plurality of first switching units;

each first power module is provided with an output bus, and each first power module is connected with a charging gun of a terminal to be powered through one output bus; wherein,

any two output buses of the first power modules in the first power group are connected through a first switch unit;

any two output buses of the first power modules in the second power group are connected through another first switch unit; wherein,

the first switch units connected between the two output buses are different;

the plurality of first power modules are sequentially ordered in sequence, the first power group comprises first power modules ordered as odd numbers, and the second power group comprises first power modules ordered as even numbers.

In one embodiment, the charging system further comprises:

a plurality of second switching units;

the plurality of connecting ends of the second power module are correspondingly connected with the output bus of each first power module in the first power group through a second switch unit respectively; wherein the output bus connected with the second switch unit connected with the second power module is different;

the plurality of connecting ends of the third power module are correspondingly connected with the output bus of each first power module in the second power group through the other second switch unit respectively; and the output buses connected with the second switch unit connected with the third power module are different.

In one embodiment, the output power of the second power module and the third power module are the same.

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 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.

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 comprises two first power modules, and the output power of the two first power modules in each power pair is different.

In one embodiment, the output power of the first power modules ordered even in each of the power pairs is higher than the output power of the first power modules ordered odd.

In one embodiment, the output power of the first power modules ordered as even in each of the power pairs is twice the output power of the first power modules ordered as odd.

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

the number of power cells included in the first power modules ordered even in each of the power pairs is greater than the number of power cells included in the first power modules ordered odd.

In one embodiment, the plurality of first power modules are divided into a plurality of power pairs according to a sequencing order, and output buses of two first power modules in each power pair are respectively used for being connected with two charging guns of a common charging terminal.

In one embodiment, the plurality of first power modules are divided into a plurality of power pairs according to a sequencing order, and output buses of two first power modules in each power pair are connected, wherein a connection node of the two output buses is used for being connected with a charging gun of a liquid cooling charging terminal.

In one embodiment, the charging system further comprises a plurality of third switching units; the power generation device comprises a plurality of first power modules, a plurality of second power modules, a plurality of liquid cooling charging guns and a plurality of liquid cooling charging guns, wherein the plurality of first power modules are divided into a plurality of power pairs according to a sequencing sequence, output buses of the two first power modules in each power pair are connected through one second switch unit, and the two output buses are respectively used for being connected with the common charging guns and the liquid cooling charging guns of the hybrid charging terminal.

In one embodiment, the charging system further comprises:

and the control device is respectively connected with the first switch units and the third switch units and used for controlling the on-off states of the first switch units and the third switch units.

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

and under the condition that the common charging gun is started first, the corresponding second switch unit is controlled to be closed.

In one embodiment, the first, second and/or third switching units comprise contactors, circuit breakers or disconnectors.

In one embodiment, the output bus bar comprises a copper bar, an aluminum bar, or a cable.

In a second aspect, the present application also provides a charging device. The charging device includes a charging system in any of the implementations described above.

In a third aspect, the present application also provides a charging station. The charging station includes a charging system in any of the implementations described above.

The charging system, the charging device and the charging station comprise a plurality of first power modules and a plurality of first switch units. The first switching unit is, for example, a first contactor. The first power modules are sequentially arranged in sequence, each first power module is provided with an output bus, each first power module is connected with a charging gun of a terminal to be powered through an output bus, the output buses of any two first power modules which are ordered to be odd are connected through a first switch unit, the output buses of any two first power modules which are ordered to be even are connected through another first switch unit, and therefore the mutual calling of electric energy can be achieved between any two first power modules which are ordered to be odd in a charging system, the mutual calling of electric energy can be achieved between any two first power modules which are ordered to be even, and therefore flexible power distribution of the charging system can be achieved.

Drawings

FIG. 1 is a schematic diagram of a charging system according to an embodiment;

FIG. 2 is a schematic diagram of a charging system according to an embodiment;

FIG. 3 is a schematic diagram of a charging system according to an embodiment;

FIG. 4 is a schematic diagram of a charging system according to an embodiment;

fig. 5 is a schematic structural diagram of a charging system according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The charging system provided by the embodiment of the application can be applied to charging of an electric automobile. As shown in fig. 1, a charging system is provided, which may be provided in a power cabinet. In one embodiment, the charging system includes a plurality of first power modules 10 and a plurality of first switching units 20.

Each first power module 10 is provided with an output bus 11, and each first power module 10 is connected with a charging gun of a terminal 12 to be powered through one output bus 11. The terminal 12 to be powered is, for example, a normal charging terminal or a liquid-cooled charging terminal of an electric vehicle. Wherein the first power module 10 is capable of providing the terminal to be powered with the electrical energy required for charging. The first power module 10 can in particular provide the power required for charging to the terminal to be supplied with power via a correspondingly configured output bus 11. The specific magnitude of the output power of the first power module 10 may be configured according to actual needs. The specific magnitudes of the output powers of at least two first power modules 10 in the plurality of first power modules 10 disposed in the charging system may be the same or different, and may be configured according to actual needs.

The plurality of first power modules 10 are sequentially ordered, the first power group a includes the first power modules 10 ordered as odd numbers, and the second power group B includes the first power modules 10 ordered as even numbers. In the embodiment of the present application, the number of the first power modules 10 provided in the charging system may be odd or even, which is not particularly limited in the embodiment of the present application. The plurality of first power modules 10 provided in the charging system may be sequentially arranged in order, and all the first power modules 10 ordered as an odd number may be divided into the first power group a, and all the first power modules 10 ordered as an even number may be divided into the second power group B.

The first switching unit 20 may include a switching element. For example, the first switching unit 20 may be a first contactor. The output buses 11 of any two first power modules 10 in the first power group A are connected through a first switch unit 20, and the output buses 11 of any two first power modules 10 in the second power group B are connected through another first switch unit 20; wherein the first switching unit 20 connected between the two output buses 11 is different. In this embodiment, the output buses 11 of any two first power modules 10 in the first power group a are connected through a first switch unit 20, the output buses 11 of any two first power modules 10 in the second power group B are connected through another first switch unit 20, when the first switch units 20 connected with the two output buses 11 are turned on, the two output buses 11 are connected, and when the first switch units 20 connected with the two output buses 11 are turned off, the two output buses 11 are disconnected. In this way, according to the on-off state of the corresponding first switch unit 20, the electric energy can be mutually transferred between any two odd-numbered first power modules 10 in the charging system, and the electric energy can be mutually transferred between any two even-numbered first power modules 10, thereby realizing the flexible power distribution of the charging system.

Illustratively, with continued reference to FIG. 1, the charging system includes first power modules 10 numbered 1 through 8 in a sequential order; the first power group a may include No. 1, no. 3, no. 5, and No. 7 first power modules 10, where output buses 11 of any two No. 1, no. 3, no. 5, and No. 7 first power modules 10 are connected by a first switch unit 20, so that according to on-off of the corresponding first switch unit 20, mutual calling of electric energy between any two No. 1, no. 3, no. 5, and No. 7 first power modules 10 can be implemented; the second power group B includes No. 2, no. 4, no. 6 and No. 8 first power modules 10, and any two of No. 2, no. 4, no. 6 and No. 8 first power modules 10 are connected through another first switch unit 20 between output buses 11 of any two first power modules 10, so that according to on-off of the corresponding first switch unit 20, mutual calling of electric energy can be achieved between any two of No. 2, no. 4, no. 6 and No. 8 first power modules 10; thereby, flexible power distribution of each first power module 10 in the charging system is achieved.

In this embodiment, a plurality of first power modules 10 and a plurality of first switch units 20 are disposed in the charging system, where the plurality of first power modules 10 are sequentially arranged, each first power module 10 is configured with an output bus 11, the output buses 11 of any two first power modules 10 ordered as odd numbers are connected through the first switch unit 20, the output buses 11 of any two first power modules 10 ordered as even numbers are connected through another first switch unit 20, so that electric energy can be mutually invoked between any two first power modules 10 ordered as odd numbers in the charging system, electric energy can be mutually invoked between any two first power modules 10 ordered as even numbers, and therefore flexible power distribution of the charging system can be achieved. Because the embodiment of the application only needs to set the first switch units 20 between the output buses 11 of any two first power modules 10 ordered as odd numbers and set the first switch units 20 between the output buses 11 of any two first power modules 10 ordered as even numbers, in the process of realizing flexible power distribution of the charging system, the number of the first switch units 20 required is less, compared with the charging system in the related art, which is realized by stacking the power distribution switch units for realizing full flexible power distribution, the charging system provided by the embodiment of the application reduces the set number of the switch units in the charging system and reduces the cost of the charging system.

In one embodiment, as shown in fig. 2, 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 based on the above embodiments.

The second switching unit 30 may include a switching element; for example, the second switching unit 30 may be a second contactor. The connection ends of the second power module 40 are respectively connected with the output bus 11 of each first power module 10 in the first power group A through a second switch unit 30 correspondingly; wherein the output bus 11 connected to the second switching unit 30 connected to the second power module 40 is different. The connection ends of the third power module 50 are respectively connected with the output bus 11 of each first power module 10 in the second power group B through another second switch unit 30 correspondingly; wherein the output bus 11 connected to the second switching unit 30 connected to the third power module 50 is different.

The first power module 10, the second power module 40, and the third power module 50 may be power modules having the same structure, and each may be capable of providing the electric energy required for charging to the terminal to be powered. The specific magnitudes of the output powers of at least two of the first power module 10, the second power module 40 and the third power module 50 may be the same or different, and may be configured according to actual needs.

In this embodiment, the plurality of connection ends of the second power module 40 are respectively connected with the output bus 11 of each first power module 10 in the first power group a through a second switch unit 30, that is, the plurality of connection ends of the second power module 40 are respectively connected with the output bus 11 of each odd-numbered first power module 10 in the charging system through a second switch unit 30, so that according to the on-off state of the corresponding second switch unit 30, the charging gun connected with any odd-numbered first power module 10 can call electric energy from the second power module 40, thereby improving the maximum output power of the charging gun connected with the odd-numbered first power module 10. The plurality of connection ends of the third power module 50 are respectively connected with the output bus 11 corresponding to each first power module 10 in the second power group B through another second switch unit 30, that is, the plurality of connection ends of the third power module 50 are respectively connected with the output bus 11 corresponding to each even-numbered first power module 10 in the charging system through another second switch unit 30, so that according to the on-off state of the corresponding second switch unit 30, the charging gun connected with any even-numbered first power module 10 can call electric energy from the third power module 50, and the maximum output power of the charging gun connected with the even-numbered first power module 10 is improved.

Illustratively, with continued reference to fig. 2, the charging system includes first power modules 10 No. 1 through 8, which are sequentially arranged in sequence, and two second power modules 40 and two third power modules 50. Because there are four first power modules 10 in odd order in the first power modules 10 in No. 1 to 8, thus each second power module 40 can correspondingly draw out four connection ends, and the four connection ends of each second power module 40 are respectively connected with the output buses 11 of the four first power modules 10 in odd order through a second switch unit 30, so that according to the on-off of the corresponding second switch unit 30, the charging gun connected with any first power module 10 in odd order can call electric energy from at least one second power module 40. For example, the charging gun connected to the first power module 1 may simultaneously invoke power from the two second power modules 40, thereby increasing the maximum output power of the charging gun connected to the first power module 1. Similarly, since there are four first power modules 10 with even ranks in the first power modules 10 with No. 1 to No. 8, each third power module 50 can correspondingly draw out four connection ends, and the four connection ends of each third power module 50 are respectively connected with the output buses 11 of the four first power modules 10 with even ranks through another second switch unit 30, so that according to the on-off state of the corresponding second switch unit 30, the charging gun connected with any first power module 10 with even ranks can call electric energy from at least one third power module 50. For example, the charging gun connected to the number 2 first power module 10 may simultaneously invoke electric power from the two third power modules 50, thereby increasing the maximum output power of the charging gun connected to the number 2 first power module 10.

In this embodiment of the present application, the first power module 10 may be regarded as a direct-connection power module directly connected to the terminal to be powered, the second power module 40 and the third power module 50 may be regarded as free power modules, i.e. free power modules, and based on the electric energy call from the free power modules, the improvement of the maximum output power of the charging gun may be achieved, and the full flexible power distribution of the charging system may be better achieved.

In one embodiment, the output power of the second power module 40 and the third power module 50 are the same, and the output power of the second power module 40 and the third power module 50 are each 30kW.

In this embodiment, by setting the output power of the second power module 40 and the output power of the third power module 50 to be the same, the first power modules 10 ordered odd and the first power modules 10 ordered even in the charging system can respectively call the electric energy with the same size from the corresponding free power modules, so as to increase the maximum output power of the charging system to the same extent, which is beneficial to realizing the maximum output power with the same size.

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

Specifically, the second power module 40 may preferentially supply power to the target output bus with the highest power supply priority configured by itself, and the third power module 50 may preferentially supply power to the target output bus with the highest power supply priority configured by itself. For example, with continued reference to fig. 2, the output bus corresponding to the second power module 40 may be an output bus configured corresponding to the first power module 10 No. 1, no. 3, no. 5, or No. 7, and among the output buses 11 configured corresponding to the first power module 10 No. 1, no. 3, no. 5, or No. 7, one of the output buses 11 may be selected to be configured as the target output bus with the highest power supply priority of the second power module 40, so that the second power module 40 preferentially supplies power to the target output bus.

For example, as originally shown in fig. 2, each second power module 40 may supply power to the output bus 11 configured corresponding to the first power module 10 No. 1, no. 3, no. 5 or No. 7, where in the case that the output bus 11 configured corresponding to the first power module 10 is configured as the target output bus with the highest power supply priority of one of the second power modules 40, during the power distribution, the second power module 40 may preferentially supply power to the output bus 11 configured corresponding to the first power module 10 No. 1; in the case where the output bus 11 configured accordingly for the first power module No. 5 is configured as the target output bus in which the power supply priority of the other second power module 40 is highest, the second power module 40 may preferentially supply power to the output bus 11 configured accordingly for the first power module No. 5 during the power distribution.

Similarly, as in fig. 2, each third power module 50 may supply power to the output bus 11 configured corresponding to the first power module 10 No. 2, no. 4, no. 6 or No. 8, where in the case that the output bus 11 configured corresponding to the first power module 10 No. 4 is configured as the target output bus with the highest power supply priority of one third power module 50, during the power distribution, the third power module 50 may preferentially supply power to the output bus configured corresponding to the first power module 10 No. 4; in the case where the output bus 11 configured accordingly for the first power module No. 8 is configured as the target output bus in which the power supply priority of another third power module 50 is highest, the third power module 50 may preferentially supply power to the output bus 11 configured accordingly for the first power module No. 8 during the power distribution.

In this embodiment, each second power module 40 and each third power module 50 may be configured with a target output bus with the highest power supply priority, so as to be capable of preferentially distributing power to the target output bus with the highest priority, which is beneficial for the charging system to flexibly distribute power to the terminal to be powered as required.

In one embodiment, the plurality of first power modules 10 are divided into a plurality of power pairs in a sorted order, each power pair including two first power modules 10, the output power of the two first power modules 10 in each power pair being different.

Illustratively, with continued reference to FIG. 2, the division of the plurality of first power modules 10 into a plurality of power pairs in a rank order may be: the first power modules 10 of the numbers 1 and 2 are divided into a power pair, the first power modules 10 of the numbers 3 and 4 are divided into a power pair, the first power modules 10 of the numbers 5 and 6 are divided into a power pair, and the first power modules 10 of the numbers 7 and 8 are divided into a power pair. The output power of the No. 1 first power module 10 is different from the output power of the No. 2 first power module 10, the output power of the No. 3 first power module 10 is different from the output power of the No. 4 first power module 10, the output power of the No. 5 first power module 10 is different from the output power of the No. 6 first power module 10, and the output power of the No. 7 first power module 10 is different from the output power of the No. 8 first power module 10.

According to the embodiment of the application, the plurality of first power modules 10 are divided into the plurality of power pairs according to the ordering sequence, each power pair comprises two first power modules 10, and the output power of the two first power modules 10 in each power pair is different, so that the charging system can flexibly distribute power to the terminal to be powered on according to the requirement.

In one embodiment, the output power of the even-ordered first power modules 10 in each power pair is higher than the output power of the odd-ordered first power modules 10.

In one embodiment, each first power module 10 includes at least one power cell; the output power of each power cell is the same. The output power of the power unit is, for example, 15kW, 20kW, 30kW or the like. Wherein the number of power cells included in the first power modules 10 ordered even in each power pair is greater than the number of power cells included in the first power modules 10 ordered odd.

In one embodiment, the output power of the even-ordered first power modules 10 in each power pair is twice the output power of the odd-ordered first power modules 10.

In one embodiment, each first power module 10 includes at least one power cell; the output power of each power cell is the same. The output power of the power unit is, for example, 15kW, 20kW, 30kW or the like. Wherein the number of power units included in the first power module 10 ordered even number in each power pair is twice the number of power units included in the first power module 10 ordered odd number.

In one embodiment, each of the second power modules 40 and each of the third power modules 50 may include a power unit; the output power of each power cell is the same. The output power of the power unit is, for example, 15kW, 20kW, 30kW or the like.

The embodiment of the application 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 also flexibly supplies power to the terminal to be powered on demand.

For example, with continued reference to fig. 2, no. 1 and No. 2 first power modules 10 are divided into a power pair, no. 3 and No. 4 first power modules 10 are divided into a power pair, no. 5 and No. 6 first power modules 10 are divided into a power pair, and No. 7 and No. 8 first power modules 10 are divided into a power pair.

The number of power units in the number 2 first power module 10 is twice the number of power units in the number 1 first power module 10, the number of power units in the number 4 first power module 10 is twice the number of power units in the number 3 first power module 10, the number of power units in the number 6 first power module 10 is twice the number of power units in the number 5 first power module 10, and the number of power units in the number 8 first power module 10 is twice the number of power units in the number 7 first power module 10.

For example, in the case where the output power of the power unit is 30kW, the output powers of the first power modules 10 of No. 1, no. 2, no. 3, no. 4, no. 5, no. 6, no. 7, and No. 8 are 30kW, 60kW, 30kW, 60kW, and 30kW in this order, 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 electric energy extraction 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 electric energy extraction between any two first power modules 10 ordered odd, and the electric energy extraction between any two first power modules 10 ordered even, when all the charging guns are simultaneously charged, 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 arranged in the charging system is only 28, that is, the total number of the first contactors and the second contactors arranged in the charging system is only 28, compared with the charging system in the related art, in order to realize the full flexible power distribution by stacking the power distribution contactors, the charging system provided by the embodiment of the application reduces the number of contactors in the charging system, reduces the cost of the charging system, simultaneously, each charging gun can reach the larger output power, each charging gun can simultaneously output the same output power, and ensures the flexible power distribution of the charging system with smaller output power of the charging system.

In this embodiment, 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 first power module 10 ordered as even in each power pair is greater than the number of power units included in the first power module 10 ordered as odd, so that not only is the smaller granularity of the output power of the charging system ensured, but also the flexible power distribution of the charging system is better realized, and the charging system is ensured to meet the electric energy required by the terminal to be charged.

In one embodiment, as shown in fig. 3, the plurality of first power modules 10 are divided into a plurality of power pairs in a sequential order, and the output bus 11 of two first power modules 10 in each power pair is respectively used for connection with two general charging guns 60 of a general charging terminal.

In this embodiment, in some operation occasions, the electric vehicle supporting liquid cooling and super-charging is not involved, and the charging system only needs to provide electric energy required by charging for the common charging terminal, so that the plurality of first power modules 10 can be divided into a plurality of power pairs according to the sequencing order, and the output buses 11 of two first power modules 10 in each power pair are respectively connected with two common charging guns 60 of the common charging terminal.

In one embodiment, as shown in fig. 4, the plurality of first power modules 10 are divided into a plurality of power pairs according to a sequencing order, and the output buses 11 of two first power modules 10 in each power pair are connected, wherein a connection node a of two output buses 11 is used for connecting with a liquid cooling charging gun 70 of a liquid cooling charging terminal.

In this embodiment, in some operation occasions, only the electric vehicle supporting liquid cooling and super-charging is involved, the charging system needs to be capable of providing electric energy required for charging for the liquid cooling and charging terminal, therefore, the plurality of first power modules 10 can be divided into a plurality of power pairs according to a sequencing order, the output buses 11 of two first power modules 10 in each power pair are connected, the connection node A of the two output buses 11 is connected with the liquid cooling and charging gun 70 of the liquid cooling and charging terminal, and the required super-high power output of the liquid cooling and charging gun 70 can be realized.

In one embodiment, as shown in fig. 5, the charging system further includes a plurality of third switching units 80; the plurality of first power modules 10 are divided into a plurality of power pairs according to a sequencing order, and output buses 11 of two first power modules 10 in each power pair are connected through a third switch unit 80, wherein the two output buses 11 are respectively used for being connected with a common charging gun 60 and a liquid cooling charging gun 70 of the hybrid charging terminal.

In some operation occasions, the electric vehicle supporting liquid cooling and super charging is not many, so that in order to ensure the operation efficiency of the charging system and ensure a large number of charging guns, the common charging gun 60 and the liquid cooling charging gun 70 can be combined into a whole to form a hybrid charging terminal. In this way, the charging system can supply the electric power required for charging to the ordinary charging gun 60, and can supply the electric power required for charging to the liquid-cooled charging gun 70.

In one embodiment, as shown in fig. 5, the terminal to be powered includes a fourth switching unit 90 and a charging gun, and the output bus 11 configured by each first power module 10 is connected to the charging gun through a fourth switching unit 90. The fourth switching unit 90 may include a switching element. For example, the fourth switching unit 90 may be a fourth contactor.

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 may be the same type of contactor. And the third contactor included in the third switching unit 80 may be a contactor of a different specification type from the first contactor and the second contactor; the fourth contactor included in the fourth switching unit 90 may be a contactor of a different specification type from the first contactor and the second contactor.

In one embodiment, the charging system further comprises: and a control device. The control device is connected to each of the first switch units 20, each of the second switch units 30, and each of the third switch units 80, and is used for controlling the on-off states of each of the first switch units 20, each of the second switch units 30, and each of the third switch units 80. The control device is specifically configured to control the on-off states of each first switch unit 20, each second switch unit 30, and each third switch unit 80 according to the actual charging requirements of the common charging gun 60 and/or the liquid-cooled charging gun 70.

In one embodiment, the control device is further configured to control the corresponding third switch unit 80 to be turned on when the liquid-cooled charging gun 70 is started first, so that the state of the ordinary charging gun 60 can be changed into a waiting state, and the charging service cannot be provided, so that the liquid-cooled charging gun 70 realizes high power output. When the normal charging gun 60 is started first, the corresponding third switch unit 80 is controlled to be turned off, the liquid cooling charging gun 70 outputs reduced power, the liquid cooling charging gun 70 can be used as the normal charging gun 60, and the maximum output power is basically the same as the output power of the normal charging gun 60.

In one embodiment, the first switching unit 20, the second switching unit 30, and/or the third switching unit 80 include contactors, circuit breakers, or disconnectors.

In one embodiment, output bus 11 comprises copper bars, aluminum bars, or cables.

The embodiment of the application also provides a charging device, which comprises the charging system in any embodiment. The charging device and the charging system belong to the same inventive concept, can realize the same technical effect, and repeated contents are not repeated here.

The embodiment of the application also provides a charging station, which comprises the charging system in any embodiment. The charging station and the charging system belong to the same inventive concept, can realize the same technical effect, and repeated contents are not repeated here.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. A charging system, the charging system comprising: a plurality of first power modules and a plurality of first switching units;

the first switch units connected between the two output buses are different;

2. The charging system of claim 1, wherein the charging system further comprises:

a plurality of second switching units;

3. The charging system of claim 2, wherein the output power of the second power module and the third power module are the same.

4. The charging system of claim 2, wherein each of the second power modules and each of the third power modules are respectively configured with a target output bus having a highest power supply priority, and wherein the target output bus of each of the second power modules and the target output bus of each of the third power modules are different.

5. The charging system of claim 1, wherein the plurality of first power modules are divided into a plurality of power pairs in a rank order, each power pair comprising two of the first power modules, the output power of the two first power modules in each power pair being different.

6. The charging system of claim 5, wherein the output power of the even-ordered first power modules in each of the power pairs is higher than the output power of the odd-ordered first power modules.

7. The charging system of claim 6, wherein the output power of the even-ordered first power modules in each of the power pairs is twice the output power of the odd-ordered first power modules.

8. The charging system of claim 5, wherein each of the first power modules comprises at least one power cell; the output power of each power unit is the same; wherein,

9. The charging system of claim 1, wherein the plurality of first power modules are divided into a plurality of power pairs in a sequencing order, and output buses of two first power modules in each power pair are respectively used for being connected with two charging guns of a common charging terminal.

10. The charging system of claim 1, wherein the plurality of first power modules are divided into a plurality of power pairs in a sequencing order, and wherein output buses of two first power modules in each power pair are connected, and wherein a connection node of two output buses is used for connecting with a charging gun of a liquid-cooled charging terminal.

11. The charging system of claim 1, further comprising a plurality of third switching units; wherein the plurality of first power modules are divided into a plurality of power pairs according to a sequencing order, output buses of the two first power modules in each power pair are connected through a third switch unit, the two output buses are respectively connected with a common charging gun and a liquid cooling charging gun of the hybrid charging terminal.

12. The charging system of claim 11, wherein the charging system further comprises:

and the control device is respectively connected with the first switch units, the second switch units and the third switch units and is used for controlling the on-off states of the first switch units, the second switch units and the third switch units.

13. The charging system of claim 12, wherein 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;

14. The charging system according to claim 1, wherein the first, second and/or third switching units comprise contactors, circuit breakers or disconnectors.

15. The charging system of claim 1, wherein the output bus comprises a copper bar, an aluminum bar, or a cable.

16. A charging device comprising a charging system according to any one of claims 1-15.

17. Charging station, characterized by comprising a charging system according to any of claims 1-15.