Charging device and charging system

Abstract

The utility model provides a charging device and a charging system, and belongs to the technical field of charging. The charging device comprises an AC input port set and a charging module set. Wherein the alternating current input port set comprises a plurality of alternating current input ports, and the charging module set comprises a plurality of charging modules; and the input ends of at least one group of adjacent charging modules are connected to different alternating current input ports, so that the power difference between the different alternating current input ports is smaller than a preset value. According to the invention, the charging power of each AC input port in the charging system can be balanced, and the overall utilization rate of the charging system is improved.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging device and a charging system. Background Art

[0002] With the development of long-range electric vehicles, the high-power demand of charging systems is also growing. In order to improve the overall utilization efficiency of the charging system, the "high-voltage access + charging host + charging terminal" method is often used to charge electric vehicles. Among them, the charging terminal often uses ordinary terminals (250A gun heads) and super-charged liquid-cooled terminals (800V / 500A and above specifications). The main specifications of the charging host are 480, 720 and 960. The charging host often uses multiple AC input ports, such as 480 and 720 often use dual AC inputs, and 960 and above will use three or four AC inputs. However, multiple AC input ports are often connected to the transformer by cables, so that the charging system generates a certain amount of AC line loss. According to the statistical results of charging station data, the power loss of a general charging station is about 18%, of which the power loss of the charging host accounts for about 8% of the power loss of the entire station, and the AC line loss of the AC input port accounts for about 3% of the power loss of the entire station.

[0003] At present, the AC input port and the charging module in the charging system are randomly matched. The charging module is used to convert the AC power input from the AC input port into DC power, which is then output to the charging terminal to charge the electric vehicle to be charged. However, when charging based on the charging system of the prior art, it is impossible to ensure that the operating power of each AC input port in the charging system is balanced, which reduces the overall utilization rate of the charging system. Therefore, an efficient charging device is urgently needed. Utility Model Content

[0004] The purpose of the present application is to provide a charging device and a charging system, which can achieve the effect of balancing the charging power of each AC input port in the charging system and improving the overall utilization of the charging system.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect of an embodiment of the present application, a charging device is provided, the charging device comprising: an AC input port set and a charging module set;

[0007] The AC input port set includes a plurality of AC input ports, and the charging module set includes a plurality of charging modules;

[0008] The input ends of at least one group of adjacent charging modules are connected to different AC input ports so that the power difference between the different AC input ports is less than a preset value.

[0009] As an optional implementation, if the charging modules are electrically connected in sequence, the charging modules are connected to different AC input ports at intervals.

[0010] As an optional implementation, the AC input port set includes: a first AC input port and a second AC input port, and the charging module set includes: a first charging module, a second charging module and a third charging module;

[0011] The first charging module, the second charging module and the third charging module are electrically connected in sequence;

[0012] If the input end of the first charging module is connected to the first AC input port, the input end of the second charging module is connected to the second AC input port, and the input end of the third charging module is connected to the first AC input port.

[0013] As an optional implementation, if the charging module is electrically connected to a plurality of charging modules, at least one charging module among the plurality of charging modules electrically connected to the charging module is connected to a different AC input port from the charging module.

[0014] As an optional implementation, the AC input port set includes: a first AC input port and a second AC input port, and the charging module set includes: a first charging module, a second charging module, a third charging module and a fourth charging module;

[0015] The second charging module, the third charging module and the fourth charging module are all electrically connected to the first charging module;

[0016] If the input end of the first charging module is connected to the first AC input port, at least two of the input ends of the second charging module, the third charging module, and the fourth charging module are connected to the second AC input port.

[0017] As an optional implementation, based on the connection relationship between each charging module, a plurality of charging module groups are determined, and the charging module group includes a pre-connection relationship between each AC input port and each charging module;

[0018] According to the grouping of multiple charging modules, a connection relationship between each AC input port in the AC input port set and each charging module in the charging module set is determined so that the power difference between different AC input ports is less than a preset value.

[0019] As an optional implementation, different AC input ports are connected at intervals according to the identification sequence of each charging module in the charging module set, and the identification sequence is determined according to the traversal sequence of each charging module.

[0020] A second aspect of the embodiments of the present application provides a charging system, the charging system comprising the charging device, the charging terminal set and the switch unit as described in the first aspect above;

[0021] The charging terminal set includes a plurality of charging terminals, and the switch unit includes a plurality of switch controls;

[0022] The output end of the charging device is connected to each charging terminal in the charging terminal set;

[0023] The charging modules in the charging device are connected via switch controls.

[0024] As an optional implementation, if multiple adjacent charging modules of the charging module in the charging device are connected to charging terminals in the charging terminal set, the adjacent charging modules connected to the charging terminals are connected to different AC input ports.

[0025] As an optional implementation, the AC input port set includes: a first AC input port and a second AC input port, the charging module set includes: a first charging module, a second charging module, a third charging module and a fourth charging module, and the charging terminal set includes: a first charging terminal, a second charging terminal and a third charging terminal;

[0026] The second charging module, the third charging module and the fourth charging module are all electrically connected to the first charging module, the second charging module is connected to the first charging terminal, the third charging module is connected to the second charging terminal, and the fourth charging module is connected to the third charging terminal;

[0027] If the input end of the first charging module is connected to the first AC input port, the input ends of the second charging module, the third charging module and the fourth charging module are all connected to the second AC input port.

[0028] The beneficial effects of the embodiments of the present application include:

[0029] A charging device provided in an embodiment of the present application is composed of an AC input port set and a charging module set, wherein the AC input port set includes multiple AC input ports, and the charging module set includes multiple charging modules. Each AC input port in the AC input port set obtains AC power from the upper circuit, and converts the AC power into DC power through each charging module in the charging module set. Each charging module has a charging module connected to it, and at least one group of adjacent charging modules in the adjacent modules of each charging module is connected to different AC input ports, so that the power difference between each AC input port is less than a preset value, so as to achieve the purpose of balancing the operating power of each AC input port in the charging device. In this way, the charging power of each AC input port in the charging system can be balanced, and the overall utilization rate of the charging system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a first charging device provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of a second charging device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of a third charging device provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of a fourth charging device provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the structure of a first charging system provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the structure of a second charging system provided in an embodiment of the present application;

[0037] Figure 7 A schematic diagram of the structure of a third charging system provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of the structure of a switch unit provided in an embodiment of the present application;

[0039] Fig. 9 A schematic diagram of the structure of another switch unit provided in an embodiment of the present application.

[0040] Description of the drawings: 10: Charging system; 101: Charging device; 1011: AC input port collection; 10111: First AC input port; 10112: Second AC input port; 1012: Charging module collection; 10121: First charging module; 10122: Second charging module; 10123: Third charging module; 10124: Fourth charging module; 102: Switching unit; 103: Charging terminal collection; 1031: First charging terminal; 1032: Second charging terminal; 1033: Third charging terminal. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] At present, the electric vehicle charging system often adopts the method of "high voltage access + charging host + charging terminal" to improve the overall utilization rate of the charging system, wherein the AC power connected by high voltage is input into the charging system through multiple AC input ports of the charging host, and each AC input port of the charging host is randomly assigned to the charging module in the charging system, so that the charging module can convert the AC power connected to the AC input port into DC power, and the charging module outputs the converted DC power to the charging terminal to charge the electric vehicle. However, in this scheme, each AC input port and each charging module in the charging system are randomly matched, which causes the problem of unbalanced operating power of each AC input port, increases the AC line loss of the AC input port, and reduces the overall utilization rate of the charging system.

[0046] To this end, an embodiment of the present application provides a charging device, which includes an AC input port set and a charging module set, wherein the AC input port set includes multiple AC input ports, and the charging module set includes multiple charging modules. The adjacent charging modules of each charging module of the charging device are connected to different AC input ports, so that the charging modules connected to each AC input port in the charging device are evenly distributed, ensuring that the power difference between each AC input port is less than a preset value, and reducing the AC line loss of each AC input port in the charging system. In this way, the charging power of each AC input port in the charging system can be balanced, and the overall utilization efficiency of the charging system can be improved.

[0047] The charging device provided in the embodiment of the present application is explained in detail below with reference to the accompanying drawings.

[0048] Figure 1 A schematic diagram of the structure of a charging device provided in this application, see Figure 1 The charging device 101 provided in the embodiment of the present application includes: an AC input port set 1011 and a charging module set 1012. The AC input port set 1011 is composed of a plurality of AC input ports, and the charging module set 1012 is composed of a plurality of charging modules.

[0049] Optionally, the AC input port set 1011 includes a plurality of AC input ports for receiving an AC signal from a transformer of a front-end circuit, and each AC input port is connected to the transformer of the front-end circuit via a cable.

[0050] Optionally, the charging module set 1012 includes multiple charging modules, each charging module is used to convert the AC power connected to the AC input port into the corresponding DC power, and each charging module can be implemented by an AC-DC converter. It is worth noting that the number of charging modules in the charging module set 1012 in the charging device 101 is greater than or equal to the number of AC input ports in the AC input port set 1011.

[0051] The input ends of at least one group of adjacent charging modules are connected to different AC input ports so that the power difference between the different AC input ports is less than a preset value.

[0052] Optionally, adjacent charging modules are used to indicate charging modules that are electrically connected to each other, and each charging module includes at least one adjacent charging module. For example, if charging module MK2 is electrically connected to charging module MK1 and charging module MK3, then charging module MK1 and charging module MK3 are both adjacent charging modules of charging module MK2, wherein charging module MK1 forms a set of adjacent relationships with charging module MK2, and charging module MK3 forms a set of adjacent relationships with charging module MK2.

[0053] Optionally, the input ends of at least one group of adjacent modules of each charging module are connected to different AC input ports of the charging module, so that the power difference between the AC input ports in the charging device 101 is less than a preset value. The preset value is a power difference threshold value set in advance by humans, and the preset value can be regarded as a benchmark for measuring the power difference between the AC input ports. When the power difference between the AC input ports in the charging device 101 is less than the preset value, it is determined that the operating power of the AC input ports in the charging device 101 is balanced, otherwise, the operating power of the AC input ports is unbalanced.

[0054] Exemplarily, when charging module MK1 is electrically connected only to charging module MK2, that is, charging module MK1 has only one adjacent charging module MK2, if charging module MK1 is connected to AC input port AC1, the adjacent charging module MK2 can only be connected to another AC input port AC2, and charging module MK1 and charging module MK2 cannot be connected to the same AC input port.

[0055] Optionally, Figure 1 MK1, MK2, MKx and MKn are only used to distinguish the charging modules in the charging module set 1012, and AC1, AC2 and ACx are only used to distinguish the AC input ports in the AC input port set 1011, and do not identify the calling priority of each AC input port and each charging module. If the charging module MK1 is electrically connected to the charging module MK2, it means that the charging module MK1 and the charging module MK2 are adjacent charging modules. If MK1 is connected to the AC input port AC1, the charging module MK2 can be connected to any AC input port except the AC input port AC1, and this application does not make specific restrictions on this.

[0056] In an embodiment of the present application, a charging device is formed by an AC input port set and a charging module set, wherein the AC input port set includes a plurality of AC input ports, and the charging module set includes a plurality of charging modules. Each AC input port in the AC input port set obtains AC power from an upper circuit, and converts the AC power into DC power through each charging module in the charging module set. Each charging module has a charging module connected to it adjacent to it, and at least one group of adjacent charging modules in the adjacent modules of each charging module is connected to different AC input ports, so that the power difference between each AC input port is less than a preset value, so as to achieve the purpose of balancing the operating power of each AC input port in the charging device. In this way, the charging power of each AC input port in the charging system can be balanced, and the overall utilization rate of the charging system can be improved.

[0057] As an optional implementation, see Figure 2If the charging modules are electrically connected in sequence, then the charging modules are connected to different AC input ports at intervals.

[0058] Optionally, if the charging modules in the charging module set 1012 are electrically connected in sequence, that is, each charging module has at least one adjacent charging module, wherein the charging module corresponding to the starting position of the electrical connection and the charging module corresponding to the ending position have only one adjacent charging module, and the charging module in the middle section has at least two adjacent charging modules.

[0059] Optionally, when the charging modules in the charging module set 1012 are electrically connected in sequence, the charging modules that are adjacently electrically connected to each other are adjacent charging modules of the charging module, and each charging module and its adjacent charging module are connected to different AC input ports in an interval form to improve the charging freedom of the charging device 101, which can effectively prevent the problem of unbalanced operating power distribution of each AC input port in the charging device, so that the operating pressure of each AC input port is balanced.

[0060] Exemplarily, the charging module set in the charging device M includes: charging module MK1, charging module MK2, charging module MK3 and charging module MK4, and the AC input port set includes AC input port AC1 and AC input port AC2. If the charging modules MK1, charging module MK2, charging module MK3 and charging module MK4 are electrically connected in sequence, then the adjacent charging module of the charging module MK1 is the charging module MK2, the adjacent charging modules of the charging module MK2 are the charging modules MK1 and the charging modules MK3, the adjacent charging modules of the charging module MK3 are the charging modules MK2 and the charging modules MK4, and the adjacent charging module of the charging module MK4 is the charging module MK3. When the charging module MK1 is connected to the AC input port AC1, the charging module MK2 is connected to the AC input port AC2, the charging module MK3 is connected to the AC input port AC1, and the charging module MK4 is connected to the AC input port AC2.

[0061] As an optional implementation, see Figure 3 A charging device 101 provided in the present application includes an AC input port set 1011 and a charging module set 1012, wherein the AC input port set 1011 includes: a first AC input port 10111 and a second AC input port 10112, and the charging module set 1012 includes: a first charging module 10121, a second charging module 10122 and a third charging module 10123.

[0062] Optionally, the AC input port set 1011 includes the first AC input port 10111 and the second AC input port 10112 only as an example, which does not mean that the AC input port set 1011 includes only two AC input ports, and the present application does not make any specific limitation on this.

[0063] Optionally, the charging module set 1012 includes a first charging module 10121, a second charging module 10122 and a third charging module 10123 as an example only, and does not mean that the charging module set 1012 of the charging device 101 only includes three charging modules. This application does not specifically limit the number of charging modules in the charging module set.

[0064] Optionally, the first AC input port 10111 and the second AC input port 10112 are both used to connect the AC power of the upper circuit to the charging device.

[0065] The first charging module 10121 , the second charging module 10122 , and the third charging module 10123 are electrically connected in sequence.

[0066] Optionally, the first charging module 10121, the second charging module 10122 and the third charging module 10123 are electrically connected in sequence, that is, the first charging module 10121 and the third charging module 10123 are both adjacent charging modules of the second charging module 10122, and the first charging module 10121 and the third charging module 10123 cannot be connected to the same AC input port as the second charging module 10122.

[0067] It is worth noting that the first charging module 10121 , the second charging module 10122 and the third charging module 10123 are only used to distinguish the charging modules in the charging module set 1012 in the charging device 101 , and do not represent the calling sequence of each charging module.

[0068] If the input end of the first charging module 10121 is connected to the first AC input port 10111 , the input end of the second charging module 10122 is connected to the second AC input port 10112 , and the input end of the third charging module 10123 is connected to the first AC input port.

[0069] Optionally, if the input end of the first charging module 10121 is connected to the first AC input port 10111, the second charging module 10122 adjacent to the first charging module 10121 is connected to the second AC input port 10112, and the third charging module 10123 adjacent to the second charging module 10122 is connected to the first AC input port 10111 other than the second AC input port 10112. The first AC input port 10111 and the second AC input port 10112 do not specify any AC input port in the charging device 101.

[0070] Optionally, if the input end of the first charging module 10121 is connected to the second AC input port 10112, the second charging module 10122 adjacent to the first charging module 10121 is connected to the first AC input port 10111, and the third charging module 10123 adjacent to the second charging module 10122 is connected to the input end of the second AC input port 10112.

[0071] Optionally, if the AC input port set 1011 in the charging device 101 includes three AC input ports, the first charging module 10121, the second charging module 10122 and the third charging module 10123 are electrically connected in sequence, when the input end of the first charging module 10121 is connected to the first AC input port 10111, the second charging module 10122 adjacent to the first charging module 10121 is connected to the second AC input port 10112, and the third charging module 10123, which is adjacent to the second charging module 10122, is connected to the input end of the third AC input port.

[0072] Optionally, each charging module can convert the AC power connected to the AC input port to which it is connected into the corresponding DC power. For example, when the input end of the first charging module 10121 is connected to the first AC input port 10111, the first charging module 10121 converts the AC power connected to the first AC input port 10111 into the corresponding DC power a; the input end of the second charging module 10122 is connected to the second AC input port 10112, and the second charging module 10122 converts the AC power connected to the second AC input port 10112 into the corresponding DC power b. The present application does not make any specific limitations on this.

[0073] As an optional implementation, if the charging module is electrically connected to a plurality of charging modules, at least one charging module among the plurality of charging modules electrically connected to the charging module is connected to a different AC input port from the charging module.

[0074] Optionally, when the charging module is electrically connected to multiple charging modules, that is, there are multiple groups of adjacent charging modules in the charging module, the charging modules that are electrically connected to the charging module are all adjacent charging modules of the charging module. Among them, at least one charging module in the adjacent charging module is connected to a different AC input port from the charging module, so that the power difference of each AC input port in the charging device 101 is maintained within a preset value range.

[0075] As an optional implementation, a charging device 101 provided in the present application includes an AC input port set 1011 and a charging module set 1012, wherein the AC input port set 1011 includes: a first AC input port 10111 and a second AC input port 10112, and the charging module set 1012 includes: a first charging module 10121, a second charging module 10122, a third charging module 10123 and a fourth charging module 10124.

[0076] Optionally, the charging module set 1012 includes a first charging module 10121, a second charging module 10122, a third charging module 10123 and a fourth charging module 10124 as an example only, and does not mean that the charging module set 1012 of the charging device 101 only includes four charging modules. This application does not specifically limit the number of charging modules in the charging module set.

[0077] The second charging module 10122 , the third charging module 10123 , and the fourth charging module 10124 are all electrically connected to the first charging module 10121 .

[0078] Optionally, the second charging module 10122 , the third charging module 10123 and the fourth charging module 10124 are all electrically connected to the first charging module 10121 , that is, the second charging module 10122 , the third charging module 10123 and the fourth charging module 10124 are all adjacent charging modules of the first charging module 10121 .

[0079] Optionally, the electrical connection form of the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 with the first charging module 10121 can be a tree-shaped electrical connection or a Y-shaped electrical connection. In the tree-shaped electrical connection form, the output ends of some charging modules in the adjacent charging modules of the charging module are directly used as the output ends of the charging device, that is, some of the adjacent charging modules are directly connected charging modules; in the Y-shaped electrical connection form, the output ends of all charging modules in the adjacent charging modules of the charging module are directly used as the output ends of the charging device, that is, all the charging modules in the adjacent charging modules are directly connected charging modules.

[0080] It is worth noting that the direct-connected charging module is used to indicate that the output end of the charging module is directly connected to the charging terminal in the charging system as the output end of the charging device to supply power to the charging module.

[0081] If the input end of the first charging module 10121 is connected to the first AC input port 10111 , at least two of the input ends of the second charging module 10122 , the third charging module 10123 , and the fourth charging module 10124 are connected to the second AC input port 10112 .

[0082] Optionally, when the input end of the first charging module 10121 is connected to the first AC input port 10111, the input ends of at least two charging modules among the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 adjacent to the first charging module 10121 are connected to the second AC input port.

[0083] Alternatively, see Figure 4 , when the electrical connection between the first charging module 10121 and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 is a Y-type electrical connection, two of the adjacent charging modules of the first charging module 10121 are connected to different AC input ports from the first charging module 10121. It is worth noting that in the Y-type electrical connection, there is at least one direct-connected charging module among the adjacent charging modules.

[0084] Optionally, if the second charging module 10122 and the fourth charging module 10124 are directly connected charging modules, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are adjacent charging modules of the first charging module 10121, when the first charging module 10121 is connected to the second AC input port 10112, the second charging module 10122 and the third charging module 10123 are connected to the first AC input port 10111, and the fourth charging module 10124 is connected to the second AC input port 10112.

[0085] Optionally, if the first charging module 10121 and the third charging module 10123 are directly connected charging modules, and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are adjacent charging modules of the first charging module 10121, when the first charging module 10121 is connected to the first AC input port 10111, the second charging module 10122 and the third charging module 10123 are connected to the second AC input port 10112, and the fourth charging module 10124 is connected to the first AC input port 10111.

[0086] It is worth noting that, among the multiple groups of charging modules formed by the combination of Y-shaped electrically connected charging modules, an equal number of direct-connected charging modules are distributed to each AC input port to increase the degree of freedom of each AC input port.

[0087] Alternatively, see Figure 5 , when the electrical connection between the first charging module 10121 and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 is a tree-shaped electrical connection, three of the adjacent charging modules of the first charging module 10121 are connected to different AC input ports from the first charging module 10121. It is worth noting that in the tree-shaped electrical connection, all the adjacent charging modules are direct-connected charging modules.

[0088] Optionally, when the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are directly connected charging modules, and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all adjacent charging modules of the first charging module 10121, when the first charging module 10121 is connected to the second AC input port 10112, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all connected to the first AC input port 10111.

[0089] Optionally, when the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are directly connected charging modules, and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all adjacent charging modules of the first charging module 10121, when the first charging module 10121 is connected to the first AC input port 10111, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all connected to the second AC input port 10112.

[0090] As an optional implementation, based on the connection relationship between each charging module, a plurality of charging module groups are determined, and the charging module grouping includes a pre-connection relationship between each AC input port and each charging module.

[0091] Optionally, based on the connection relationship between each charging module, multiple groups of traversal orders are determined to ensure that each charging module in the charging device 101 is traversed, and multiple charging module groups are determined based on the traversal results. The charging module groupings are used to indicate the pre-connection relationship between each charging module and the AC input port. The pre-connection relationship is used to indicate the preparatory connection relationship between each charging module and the AC input port, rather than the actual connection relationship.

[0092] According to the grouping of multiple charging modules, a connection relationship between each AC input port in the AC input port set and each charging module in the charging module set is determined so that the power difference between different AC input ports is less than a preset value.

[0093] Optionally, based on the pre-connection relationship between each AC input port and each charging module in each charging module grouping, the charging efficiency or efficiency loss corresponding to each charging module grouping is calculated, and based on the comparison result of the charging efficiency or efficiency loss corresponding to each charging module grouping, a charging module grouping with the smallest efficiency loss or the highest charging efficiency is determined, and the pre-connection relationship between each AC input port and each charging module in the charging module grouping is used as the actual connection relationship between each AC input port and each charging module in the charging device 101, so that the power difference between each AC input port is less than a preset value, and the operating power of each AC input port is balanced.

[0094] As an optional implementation, different AC input ports are connected at intervals according to the identification sequence of each charging module in the charging module set, and the identification sequence is determined according to the traversal sequence of each charging module.

[0095] Optionally, the representation order of each charging module in the charging module set is used to indicate the traversal order of each charging module. The traversal order of each charging module is determined by the connection relationship between the charging modules. Traversing along any connection path of the charging module can ensure that each charging module in the charging system is traversed, thereby determining the allocation relationship between each charging module and each AC input port.

[0096] For example, the charging system A includes twelve charging modules and six charging terminals, and the charging modules are electrically connected in sequence. The identification of each charging module is MK1, MK2, MK3, MK4, MK5, MK6, MK7, MK8, MK9, MK10, MK11 and MK12, and the identification of each charging terminal is DC1, DC2, DC3, DC4, DC5 and DC6. Among them, DC1 is connected to MK1, DC2 is connected to MK4, DC3 is connected to MK12, DC4 is connected to MK9, DC5 is connected to MK6, and DC6 is connected to MK7. MK1 is also connected to MK8, MK2 is also connected to MK6, MK5 is also connected to MK12, and MK7 is also connected to MK11. If MK1 is used as the starting charging module, MK1 includes two connection paths, namely, MK1 is connected to MK2, and MK1 is connected to MK8. ​​Then the traversal order 1 starting from MK1 is MK1—MK2—MK3—MK4—MK5—MK6—MK7—MK8—MK9—MK10—MK11—MK12; the traversal order 2 starting from MK1 is MK1—MK2—MK6—MK5—MK4—MK3, MK8—MK7—MK 11—MK12, MK9—MK10; the traversal order 3 with MK1 as the starting point is MK1—MK2—MK3—MK4—MK5—MK6, MK8—MK7—MK11—MK12, MK9—MK10; the traversal order 4 with MK1 as the starting point is MK1—MK2—MK6—MK5—MK4—MK3, MK8—MK9—MK10—MK11—MK7, MK12, etc., and this application does not make any specific limitations on this.

[0097] Optionally, different AC input ports are connected at intervals according to the identification sequence of each charging module in the charging module set 1012. For example, if the identification sequence corresponding to the traversal sequence 1 is MK1—MK2—MK3—MK4—MK5—MK6—MK7—MK8—MK9—MK10—MK11—MK12, MK1, MK3, MK5, MK7, MK9, MK11 are assigned to AC1, and MK1, MK3, MK5, MK7, MK9, MK11 are assigned to the AC input port AC2.

[0098] As an optional implementation, see Figure 6 The present application provides a charging system 10, which includes: a charging device 101, a switch unit 102, and a charging terminal set 103. The charging terminal set 103 includes multiple charging terminals, and the switch unit 102 includes multiple switch controls.

[0099] Optionally, the charging terminal set 103 includes multiple charging terminals, which are connected to the device to be charged. The charging terminal may be a charging gun head, a supercharging liquid cooling terminal, etc. The switch unit 102 is implemented by a multi-input and multi-output matrix switch unit, which is not specifically limited in this application.

[0100] The output end of the charging device 101 is connected to each charging terminal in the charging terminal set 103 .

[0101] Optionally, the output end of the charging device 101 is the input end of each directly connected charging module in the charging module set 1012 in the charging device 101, and the output end of the charging device 101 is a set of output ends of multiple directly connected charging modules. The charging device 101 is connected to each charging terminal in the charging terminal set 103 via each directly connected charging module.

[0102] The charging modules in the charging device 101 are connected via switch controls.

[0103] Optionally, each charging module is electrically connected via a switch control in the switch unit 102. The switch unit 102 can realize the series and parallel connection of each charging module. The switch unit 102 can control the conduction and disconnection between each charging module, so that each charging module in the charging module set 1012 directly or indirectly transmits a DC signal to multiple charging terminals. Among them, if the charging module is a direct-connected charging module, the charging module directly transmits the DC signal to the corresponding charging terminal. In addition, the output end of each charging module in the charging module set 1012 is connected to the input end of each charging terminal via the switch unit 102. The switch unit 102 is used to control the conduction and disconnection between each charging module and each charging terminal, thereby completing the charging and power-off of the device to be charged connected to the charging terminal.

[0104] Optionally, the switch unit 102 is a multi-input multi-output switch matrix. The switch unit 102 may be implemented by a full-matrix switch unit or a non-full-matrix switch unit, which is not specifically limited in the present application.

[0105] It is worth noting that if the switch unit 102 is implemented by a full-matrix switch unit, each charging module in the charging system 10 can be connected to the charging terminal via a matrix switch, which can improve the charging distribution freedom of the charging system 10; if the switch unit 102 is implemented by a non-full-matrix switch unit, some of the charging modules in the charging system 10 are directly connected to each other, and some of the charging modules are interconnected and then power the charging terminal via a direct connection module.

[0106] Optionally, the switch unit 102 may be a full-matrix switch unit with multiple inputs and multiple outputs, or a non-full-matrix switch unit with multiple inputs and multiple outputs. Figure 8 The switch unit 102 is implemented by a full matrix switch unit, Fig. 9 The switch unit 102 is implemented by a non-full matrix switch unit, and this application does not make any specific limitation on this.

[0107] It is worth mentioning that Figure 8 The full matrix switch unit in the charging module can connect each charging terminal via the distribution matrix switch; Fig. 9 The non-full matrix switch unit can enable part of each charging module to be directly connected to the charging terminal, and part to be connected to the charging terminal via the distribution matrix switch. The specific implementation functions and effects are consistent, but the freedom of charging module calling of the non-full matrix switch unit is slightly inferior to that of the full matrix switch unit. This application does not make specific limitations on this.

[0108] As an optional implementation, if multiple adjacent charging modules of the charging module in the charging device 101 are connected to charging terminals in the charging terminal set 103, the adjacent charging modules connected to the charging terminals are connected to different AC input ports.

[0109] Optionally, if multiple adjacent charging modules of the charging module in the charging device 101 are connected to the charging terminals in the charging terminal set 103, that is, there are multiple direct-connected charging modules in the charging device 101, the direct-connected charging modules connected to the charging terminals are connected to different AC input ports, so that the operating efficiency of each AC input port in the charging system 10 is balanced.

[0110] As an optional implementation, see Figure 6 The charging system 10 provided in the present application includes a charging device 101, a switch unit 102 and a charging terminal set 103. The AC input port set 1011 in the charging device 101 includes: a first AC input port 10111 and a second AC input port 10112; the charging module set 1012 in the charging device 101 includes: a first charging module 10121, a second charging module 10122, a third charging module 10123 and a fourth charging module 10124; the charging terminal set 103 includes: a first charging terminal 1031, a second charging terminal 1032 and a third charging terminal 1033.

[0111] The second charging module 10122 , the third charging module 10123 and the fourth charging module 10124 are all electrically connected to the first charging module 10121 . The second charging module 10122 is connected to the first charging terminal 1031 , the third charging module 10123 is connected to the second charging terminal 1032 , and the fourth charging module 10124 is connected to the third charging terminal 1033 .

[0112] Optionally, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all electrically connected to the first charging module 10121, that is, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all adjacent charging modules of the first charging module 10121. Among them, the second charging module 10122 is connected to the first charging terminal 1031, the third charging module 10123 is connected to the second charging terminal 1032, and the fourth charging module 10124 is connected to the third charging terminal 1033, that is, the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are all directly connected charging modules.

[0113] If the input end of the first charging module 10121 is connected to the first AC input port 10111 , the input ends of the second charging module 10122 , the third charging module 10123 and the fourth charging module 10124 are all connected to the second AC input port 10112 .

[0114] Optionally, the electrical connection between the first charging module 10121 and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 is a tree-shaped electrical connection, and the second charging module 10122, the third charging module 10123 and the fourth charging module 10124 are connected to different AC input ports from the first charging module 10121. For example, if the input end of the first charging module 10121 is connected to the first AC input port 10111, the input end of the second charging module 10122, the input end of the third charging module 10123 and the input end of the fourth charging module 10124 are all connected to the second AC input port 10112. For another example, if the input end of the first charging module 10121 is connected to the second AC input port 10112, the input end of the second charging module 10122, the input end of the third charging module 10123 and the input end of the fourth charging module 10124 are all connected to the first AC input port 10111.

[0115] As an optional implementation, Figure 7 A schematic diagram of a charging system provided for this application, see Figure 7, S1 is used to represent the first switch control 1021, S3 is used to represent the third switch control 1023, S5 is used to represent the fifth switch control 1025, S7 is used to represent the seventh switch control 1027, S9 is used to represent the ninth switch control 1029, S11 is used to represent the eleventh switch control 10211, S13 is used to represent the thirteenth switch control 10213, S2 is used to represent the second switch control 1022, S4 is used to represent the fourth switch control 1024, S6 is used to represent the sixth switch control 1026, S8 is used to represent the eighth switch control 1028, S10 is used to represent the tenth switch control 10210, S12 is used to represent the twelfth switch control 10212, S14 is used to represent the fourteenth switch control 10214, and S15 is used to represent the fifteenth switch control 10215. The above identifications are all examples, and do not mean that only these numbers can be used for identification, and the present application does not make specific limitations on this.

[0116] Optionally, Figure 7 Among them, MK1 is used to indicate the first charging module 10121, MK2 is used to indicate the second charging module 10122, MK3 is used to indicate the third charging module 10123, MK4 is used to indicate the fourth charging module 10124, MK5 is used to indicate the fifth charging module 10125, MK6 is used to indicate the sixth charging module 10126, MK7 is used to indicate the seventh charging module 10127, MK8 is used to indicate the eighth charging module 10128, MK9 is used to indicate the ninth charging module 10129, MK10 is used to indicate the tenth charging module 101210, MK11 is used to indicate the eleventh charging module 101211, and MK12 is used to indicate the twelfth charging module 101212. The above identifications are all examples, and do not mean that only these numbers can be used for identification, and this application does not make any specific limitations on this.

[0117] Optionally, Figure 7 Among them, DC1 is used to represent the first charging terminal 1031, DC2 is used to represent the second charging terminal 1032, DC3 is used to represent the third charging terminal 1033, DC4 is used to represent the fourth charging terminal 1034, DC5 is used to represent the fifth charging terminal 1035, and DC6 is used to represent the sixth charging terminal 1036. The above identifications are all examples and do not mean that only these numbers can be used for identification. This application does not make specific limitations on this.

[0118] Optionally, the first charging module 10121 is connected to the second charging module 10122 via the first switch control 1021, the third charging module 10123 is connected to the fourth charging module 10124 via the third switch control 1023, the fifth charging module 10125 is connected to the sixth charging module 10126 via the fifth switch control 1025, the seventh charging module 10127 is connected to the eighth charging module 10128 via the seventh switch control 1027, the ninth charging module 10129 is connected to the tenth charging module 101210 via the ninth switch control 1029, the eleventh charging module 101211 is connected to the twelfth charging module 101212 via the eleventh switch control 10211, and the first charging module 10121 is also connected to the eighth charging module 10128 via the thirteenth switch control 10213. Among them, the first switch control 1021 controls the on-off of the first charging module 10121 and the second charging module 10122, the third switch control 1023 controls the on-off of the third charging module 10123 and the fourth charging module 10124, the fifth switch control 1025 controls the on-off of the fifth charging module 10125 and the sixth charging module 10126, the seventh switch control 1027 controls the on-off of the seventh charging module 10127 and the eighth charging module 10128, the ninth switch control 1029 controls the on-off of the ninth charging module 10129 and the tenth charging module 101210, the eleventh switch control 10211 controls the on-off of the eleventh charging module 101211 and the twelfth charging module 101212, and the thirteenth switch control 10213 controls the on-off of the first charging module 10121 and the eighth charging module 10128.

[0119] Optionally, the second charging module 10122 is connected to the third charging module 10123 via the second switch control 1022, the fourth charging module 10124 is connected to the fifth charging module 10125 via the fourth switch control 1024, the sixth charging module 10126 is connected to the seventh charging module 10127 via the sixth switch control 1026, the eighth charging module 10128 is connected to the ninth charging module 10129 via the eighth switch control 1028, the tenth charging module 101210 is connected to the eleventh charging module 101211 via the tenth switch control 10210, and the twelfth charging module 101212 is connected to the fifth charging module 10125 via the twelfth switch control 10212. Among them, the second switch control 1022 controls the on-off of the second charging module 10122 and the third charging module 10123, the fourth switch control 1024 controls the on-off of the fourth charging module 10124 and the fifth charging module 10125, the sixth switch control 1026 controls the on-off of the sixth charging module 10126 and the seventh charging module 10127, the eighth switch control 1028 controls the on-off of the eighth charging module 10128 and the ninth charging module 10129, the tenth switch control 10210 controls the on-off of the tenth charging module 101210 and the eleventh charging module 101211, and the twelfth switch control 10212 controls the on-off of the twelfth charging module 101212 and the fifth charging module 10125.

[0120] Optionally, the seventh charging module 10127 is connected to the eleventh charging module 101211 via the fourteenth switch control 10214, and the fourteenth switch control 10214 is used to implement on-off control of the seventh charging module 10127 and the eleventh charging module 101211; the second charging module 10122 is connected to the sixth charging module 10126 via the fifteenth switch control 10215, and the fifteenth switch control 10215 is used to implement on-off control of the second charging module 10122 and the sixth charging module 10126.

[0121] Optionally, the output end of the first charging module 10121 is connected to the input end of the first charging terminal 1031, the output end of the seventh charging module 10127 is connected to the input end of the third charging terminal 1033, and the output end of the ninth charging module 10129 is connected to the input end of the fifth charging terminal 1035; when the output end of the first charging terminal 1031 is connected to the device to be charged, the first charging module 10121 is preferentially called for charging; when the output end of the third charging terminal 1033 is connected to the device to be charged, the seventh charging module 10127 is preferentially called for charging; when the output end of the fifth charging terminal 1035 is connected to the device to be charged, the ninth charging module 10129 is preferentially called for charging.

[0122] Optionally, the output end of the fourth charging module 10124 is connected to the input end of the second charging terminal 1032, the output end of the sixth charging module 10126 is connected to the input end of the fourth charging terminal 1034, and the output end of the twelfth charging module 101212 is connected to the input end of the sixth charging terminal 1036; when the output end of the second charging terminal 1032 is connected to the device to be charged, the fourth charging module 10124 is preferentially called for charging; when the output end of the fourth charging terminal 1034 is connected to the device to be charged, the sixth charging module 10126 is preferentially called for charging; when the output end of the sixth charging terminal 1036 is connected to the device to be charged, the twelfth charging module 101212 is preferentially called for charging.

[0123] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0124] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A charging device, characterized in that: The charging device comprises: an AC input port set and a charging module set; The AC input port set includes a plurality of AC input ports, and the charging module set includes a plurality of charging modules; The input ends of at least one group of adjacent charging modules are connected to different AC input ports so that the power difference between the different AC input ports is less than a preset value.

2. The charging device according to claim 1, characterized in that: If the charging modules are electrically connected in sequence, the charging modules are connected to different AC input ports at intervals.

3. The charging device according to claim 2, characterized in that: The AC input port set includes: a first AC input port and a second AC input port, and the charging module set includes: a first charging module, a second charging module and a third charging module; The first charging module, the second charging module and the third charging module are electrically connected in sequence; If the input end of the first charging module is connected to the first AC input port, the input end of the second charging module is connected to the second AC input port, and the input end of the third charging module is connected to the first AC input port.

4. The charging device according to claim 1, characterized in that: If the charging module is electrically connected to a plurality of charging modules, at least one of the plurality of charging modules electrically connected to the charging module is connected to a different AC input port from the charging module.

5. The charging device according to claim 4, characterized in that: The AC input port set includes: a first AC input port and a second AC input port, and the charging module set includes: a first charging module, a second charging module, a third charging module and a fourth charging module; The second charging module, the third charging module and the fourth charging module are all electrically connected to the first charging module; If the input end of the first charging module is connected to the first AC input port, at least two of the input ends of the second charging module, the input end of the third charging module, and the input end of the fourth charging module are connected to the second AC input port.

6. The charging device according to any one of claims 1 to 5, characterized in that: Determine a plurality of charging module groups based on a connection relationship between each charging module, wherein the charging module group includes a pre-connection relationship between each AC input port and each charging module; According to the plurality of charging module groups, a connection relationship between each AC input port in the AC input port set and each charging module in the charging module set is determined so that a power difference between different AC input ports is less than a preset value.

7. The charging device according to claim 1, characterized in that: Different AC input ports are connected at intervals according to the identification sequence of each charging module in the charging module set, and the identification sequence is determined according to the traversal sequence of each charging module.

8. A charging system, characterized in that: The charging system comprises the charging device according to any one of claims 1 to 7, a charging terminal set and a switch unit; The charging terminal set includes a plurality of charging terminals, and the switch unit includes a plurality of switch controls; The output end of the charging device is connected to each charging terminal in the charging terminal set; The charging modules in the charging device are connected via the switch control.

9. The charging system according to claim 8, characterized in that: If a plurality of adjacent charging modules of the charging module in the charging device are all connected to charging terminals in the charging terminal set, the adjacent charging modules connected to the charging terminals are connected to different AC input ports.

10. The charging system according to claim 9, characterized in that: The AC input port set includes: a first AC input port and a second AC input port, the charging module set includes: a first charging module, a second charging module, a third charging module and a fourth charging module, and the charging terminal set includes: a first charging terminal, a second charging terminal and a third charging terminal; The second charging module, the third charging module and the fourth charging module are all electrically connected to the first charging module, the second charging module is connected to the first charging terminal, the third charging module is connected to the second charging terminal, and the fourth charging module is connected to the third charging terminal; If the input end of the first charging module is connected to the first AC input port, the input end of the second charging module, the input end of the third charging module and the input end of the fourth charging module are all connected to the second AC input port.

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