Charging pile circuit and charging pile

Abstract

The embodiment of the utility model provides a charging pile circuit and a charging pile, and relates to the technical field of charging piles. The charging pile circuit comprises a charging gun module, a contactor module, a switch module and at least three charging modules, the at least two charging modules are connected with the contactor module through the switch module, and the contactor module is connected with the charging gun module; the switch module has at least three states, so that the charging gun in the charging gun module can output at least three different powers which are only 50% and 100% compared with the prior art, and the granularity of the power distributed to the charging gun is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of charging piles, and in particular to charging pile circuits. Background Art

[0002] The most common type of DC charging pile is the dual-gun DC charging pile, such as Figure 1 A set of bridge contactors are used to connect charging gun A and charging gun B to distribute power.

[0003] The specific power distribution is as follows: divide the four charging modules into two groups, close the A gun contactor and the B gun contactor, at this time the charging gun A and the charging gun B can only obtain power from one group of charging module groups, and the maximum output power of a single gun is 50% of the maximum power of the charging pile; close the A gun contactor and the bridge contactor, at this time the A gun can obtain power from all charging module groups, and the output power of the other gun is 0; close the B gun contactor and the bridge contactor, at this time the B gun can obtain power from all charging module groups, and the output power of the other gun is 0, that is, the maximum output power of a single gun is 100% of the maximum power of the charging pile.

[0004] However, the allocated power can only be half power or full power, and the allocated power granularity is high, which cannot better meet the charging needs.

[0005] Therefore, how to reduce the granularity of power allocation is a technical problem to be solved by this application. Utility Model Content

[0006] The purpose of the present application is to provide a charging pile circuit and a charging pile to solve the technical problem of how to reduce the granularity of power distribution of the charging pile in the prior art.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0008] In a first aspect, an embodiment of the present application provides a charging pile circuit, comprising a charging gun module, a contactor module, a switch module and at least three charging modules, at least two of the charging modules are connected to the contactor module through the switch module, and the contactor module is connected to the charging gun module;

[0009] The switch module has at least three states, so that the charging gun in the charging gun module can output at least three different powers. When the switch module is in different conduction states, the charging gun module outputs different powers.

[0010] Optionally, the charging module includes two types, a first type of charging module is directly connected to the contactor module, and a second type of charging module is connected to the contactor module via the switch module, and the number of the second type of charging modules is greater than 1.

[0011] Optionally, the charging gun module includes at least 2 charging guns; the contactor module includes at least 2 contactors; the switch module includes at least 2 output terminals; the number of the contactors, the number of the charging guns and the number of the output terminals of the switch module are equal;

[0012] Each output end of the switch module is connected to a charging gun via a contactor.

[0013] Optionally, the charging module includes two types:

[0014] The first type of charging module is directly connected to one of the contactors, and the number of the first type of charging modules is equal to the number of the contactors;

[0015] The second type of charging module is connected to the contactor module via the switch module, and the number of the second type of charging module is greater than or equal to 1.

[0016] Optionally, the first end of each contactor is connected to a charging gun, and the first ends of different contactors are connected to different charging guns;

[0017] The second end of each of the contactors is directly connected to a first charging module, and the second ends of different contactors are directly connected to different charging modules;

[0018] The switch module includes a first type of switch and a second type of switch;

[0019] The first switch is connected between the second ends of the two contactors;

[0020] The second switch is connected between a second end of the contactor and the second charging module.

[0021] Optionally, the charging gun module includes a first charging gun and a second charging gun; the contactor module includes a first contactor and a second contactor;

[0022] The first switch comprises one; the first switch is connected between the second end of the first contactor and the second end of the second contactor;

[0023] The number of the second switches is twice the number of the second charging modules; each of the second charging modules is connected to the second end of the first contactor via one second switch, and is connected to the second end of the second contactor via another second switch.

[0024] Optionally, the second charging module includes a first charging module and a second charging module;

[0025] The second switch includes a first switch, a second switch, a third switch and a fourth switch;

[0026] The first charging module is connected to the second end of the first contactor through the first switch, and is connected to the second end of the second contactor through the second switch;

[0027] The second charging module is connected to the second end of the first contactor through the third switch, and is connected to the second end of the second contactor through the fourth switch.

[0028] Optionally, the switches in the switch module are all relays.

[0029] Optionally, all the charging modules have the same power.

[0030] In a second aspect, an embodiment of the present application provides a charging pile, which includes the charging pile circuit of the first aspect.

[0031] Compared with the prior art, this application has the following beneficial effects:

[0032] The charging pile circuit provided in the embodiment of the present application realizes the output of different charging modules and different numbers of charging modules to the contactor by setting the conduction state of the switch module. There are at least three types of output power, which is only 50% and 100% compared with the prior art, thereby reducing the granularity of the power allocated to the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] Figure 1 A schematic diagram of a charging pile circuit in the prior art in which the power distribution can only be half power or full power;

[0035] Figure 2 A schematic diagram of a charging pile circuit provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a charging pile circuit in which all charging modules are connected to a contactor module via a switch module, provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of a charging pile circuit with two charging guns provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of a charging pile circuit with two charging guns and two charging modules provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of a charging pile circuit in which two charging modules are connected to a contactor via a switch module, provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of a charging pile circuit with three charging guns provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of a charging pile circuit in which a switch module has three switches provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of a charging pile circuit in which a switch module has a bidirectional switch provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of a charging pile circuit in which a switch module is provided in an embodiment of the present application and has five switches. DETAILED DESCRIPTION

[0044] 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. 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 in the drawings here can be arranged and designed in various different configurations.

[0045] 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. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0046] In the description of this application, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The term "connection" 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 directly connected or indirectly connected through an intermediate medium.

[0047] Existing charging piles only have two output powers: 50% and 100%. The power allocated to the charging gun can only be half power or full power. The granularity is high and cannot better meet charging needs.

[0048] To overcome the above problems, please refer to Figure 2 An embodiment of the present application provides a charging pile circuit, which includes a charging gun module, a contactor module, a switch module and at least three charging modules, at least two charging modules are connected to the contactor module through the switch module, and the contactor module is connected to the charging gun module.

[0049] The switch module has at least three states, so that the charging gun in the charging gun module can output at least three different powers. When the switch module is in different conduction states, the charging gun module outputs different powers. Compared with the existing technology, which only has 50% and 100%, the granularity of the power allocated to the charging gun is reduced.

[0050] The output powers of different charging modules can be the same or different. If the output powers of different charging modules are the same, the different charging modules can replace each other. If the output powers of different charging modules are different, more different powers can be output.

[0051] Figure 2 There are two types of charging modules on display. The first type of charging module is directly connected to the contactor module, and the second type of charging module is connected to the contactor module through the switch module. The number of the second type of charging modules is greater than 1. For example, the number of the second type of charging modules is 2. If the power of all charging modules is the same, three power outputs can be formed:

[0052] (1) The switch module disconnects the two charging modules from the contactor module. Only the directly connected contactor module can supply power to the charging gun module, that is, only one charging module has power output;

[0053] (2) The switch module disconnects one charging module from the contactor module and connects one charging module to the contactor module, so that a total of two charging modules can supply power to the charging gun module;

[0054] (3) The switch module connects the two charging modules to the contactor module, so a total of three charging modules can supply power to the charging gun module.

[0055] Figure 3 The embodiment in which all charging modules are connected to the contactor module through the switch module is shown. If the power of all charging modules is the same, three power outputs can be formed:

[0056] (1) The switch module connects one charging module to the contactor module, and the other two charging modules are disconnected from the contactor module;

[0057] (2) The switch module connects the two charging modules to the contactor module, and disconnects one charging module from the contactor module;

[0058] (3) The switch module connects the three charging modules to the contactor module.

[0059] Figure 2 and Figure 3 It can achieve three output powers of 33.3%, 66.7% and 100%.

[0060] like Figure 4 The charging gun module may include at least 2 charging guns, the contactor module may include at least 2 contactors, and the switch module may include at least 2 output terminals; the number of contactors, the number of charging guns and the number of output terminals of the switch module are equal, and each output terminal of the switch module is connected to a charging gun through a contactor.

[0061] By designing the structure of the switch module, the switch module can select any one or several charging modules to connect to any one or several contactors, thereby achieving: for any charging gun, different power outputs can be achieved. The number of power outputs of the charging gun depends on the number of connected charging modules and the power of each charging module.

[0062] Figure 4 All charging modules in the are connected to the contactor through the switch module, such as Figure 5 , it is also possible to set a part of the charging modules to be directly connected to the contactor. Specifically, the charging modules include two types:

[0063] (1) The first charging module is directly connected to a contactor, and the number of the first charging modules is equal to the number of contactors;

[0064] (2) The second charging module is connected to the contactor module via the switch module, and the number of the second charging module is greater than or equal to 1. Figure 5 A second embodiment in which the number of charging modules is 1 is shown. Figure 6 A second embodiment in which the number of charging modules is 2 is shown.

[0065] Figure 5 In the implementation mode, the first charging gun can achieve three power outputs:

[0066] (1) The switch module will Figure 5 The charging modules at the bottom and upper right are disconnected from the first contactor. Figure 5 The charging module on the upper left is connected to the first contactor, that is, only one charging module has power output;

[0067] (2) The switch module will Figure 5 The charging module below is disconnected from the first contactor. Figure 5 The upper left and upper right charging modules are connected to the first contactor, that is, there are two charging module power outputs;

[0068] (3) The switch module will Figure 5All charging modules are connected to the first contactor, that is, there are three charging module power outputs.

[0069] Similarly, the second charging gun can achieve 3 power outputs:

[0070] (1) The switch module will Figure 5 The upper left and upper right charging modules are disconnected from the second contactor, only Figure 5 The charging module below is connected to the second contactor, that is, only one charging module outputs power;

[0071] (2) The switch module will Figure 5 The charging module on the upper right is disconnected from the second contactor. Figure 5 The charging modules at the bottom and upper left are connected to the second contactor, i.e., there are two charging module power outputs;

[0072] (3) The switch module will Figure 5 All charging modules are connected to the second contactor, that is, there are three charging module power outputs.

[0073] Figure 6 In the implementation mode, the first charging gun can achieve 4 power outputs:

[0074] (1) The switch module will Figure 6 The charging modules at the lower left, lower right and upper right are disconnected from the first contactor. Figure 6 The charging module on the upper left is connected to the first contactor, that is, only one charging module has power output;

[0075] (2) The switch module will Figure 6 The charging modules at the upper right and lower right are disconnected from the first contactor. Figure 6 The charging modules on the upper left and lower left are connected to the first contactor, that is, there are two charging module power outputs;

[0076] (3) The switch module will Figure 6 The charging module on the lower right is disconnected from the first contactor. Figure 6 The charging modules at the lower left, upper left and upper right are connected to the first contactor, that is, there are three charging module power outputs;

[0077] (4) The switch module will Figure 6 All charging modules are connected to the first contactor, that is, there are 4 charging module power outputs.

[0078] Similarly, the second charging gun can achieve 4 power outputs: Figure 6 It can be seen that the first charging gun is symmetrical to the second charging gun.

[0079] Figure 5 , Figure 6Two charging gun implementations are shown. Figure 7 An implementation with three charging guns is shown, wherein the first end of each contactor is connected to a charging gun, and the first ends of different contactors are connected to different charging guns; the second end of each contactor is directly connected to a first charging module, and the second ends of different contactors are directly connected to different charging modules.

[0080] For the switch module, the switch module may include a first type of switch and a second type of switch, such as Figure 8 The first type of switch is switch K1, the second type of switch includes switch K2 and switch K3, switches K4 and K5 are contactors, the first charging module and the second charging module are the first type of charging modules, and the third charging module is the second type of charging module.

[0081] One end of the contactor connected to a charging gun is the first end, and the second ends of the two contactors are connected through a switch K1; the switch K2 is connected between the second end of the contactor K4 and the third charging module, and the switch K3 is connected between the second end of the contactor K5 and the third charging module.

[0082] When there are two charging guns, the third charging module needs two switches to output to the two charging guns respectively, so each charging gun can choose to allow the third charging module to output or not. In other words, when there are two charging guns, each second charging module can be connected to two switches respectively, and the number of second switches is twice the number of second charging modules. Each second charging module is connected to the second end of the first contactor through one second switch and connected to the second end of the second contactor through another second switch.

[0083] Figure 8 In the embodiment shown, each charging gun can output three power levels. Increasing the number of the second charging modules can increase the number of power levels output by each charging gun.

[0084] The switch K2 and the switch K3 connected to the third charging module may also be bidirectional switches. Fig. 9 The bidirectional switch K23 in the figure has three nodes: upper, left, and right. When the switch is placed in the middle, it is in the disconnected state. When the switch is placed on the left, the upper node is only connected to the left node. When the switch is placed on the right, the upper node is only connected to the right node.

[0085] like Fig.10 , Fig.10 exist Figure 8 A fourth charging module is added on the basis of the second charging module, and the fourth charging module belongs to the second charging module. The fourth charging module is connected to the contactor K4 through the switch K6 and is connected to the contactor K5 through the switch K7.

[0086] Fig.10There are four charging modules, this power distribution method can allocate single gun power to 25%, 50%, 75% or 100%:

[0087] Close contactor K4, and the first charging gun obtains the power of the first charging module; close contactor K4 and switch K2, and the first charging gun obtains the power of the first charging module and the third charging module; close contactor K4, switch K2 and switch K6, and gun A obtains the power of the first charging module, the third charging module and the fourth charging module; close contactor K4, switch K2, switch K6 and switch K1, and gun A obtains the power of the first charging module, the second charging module, the third charging module and the fourth charging module; the same applies to gun B.

[0088] The four charging modules can make the power distribution granularity lower and the power distribution more refined. In addition, even if any two modules are damaged, the two guns can still be charged at the same time. The switching is flexible, which can better meet the charging needs and reduce the urgency of after-sales service.

[0089] In the above implementation, all switches in the switch module can be implemented by relays, for example Fig.10 There are two bridge contactors and five bridge relays. Switches K1, K2, K3, K6, and K7 are all relays. Relays can be fixed with PCBs, and are smaller and cheaper. The charging pile circuit only needs two bridge contactors. Bridge contactors are large and expensive. This solution saves space.

[0090] Based on the above embodiments, the embodiments of the present application further provide a charging pile, which includes the above-mentioned charging pile circuit.

[0091] In general, the present application proposes a charging pile circuit and a charging pile, which can achieve the following beneficial effects:

[0092] 1. The charging modules are grouped more finely, with lower granularity and more flexible switching;

[0093] 2. Use bridge relays instead of bridge contactors, which are smaller and less expensive;

[0094] 3. In the event that any two charging modules are damaged, the two charging guns can still charge normally at the same time, reducing the urgency of after-sales service.

[0095] The above-described device and system embodiments are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. A person skilled in the art may understand and implement the present embodiment without creative effort.

[0096] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present application 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.

Claims

1. A charging pile circuit, characterized in that: It includes a charging gun module, a contactor module, a switch module and at least three charging modules, at least two of the charging modules are connected to the contactor module through the switch module, and the contactor module is connected to the charging gun module; The switch module has at least three states, and when the switch module is in different conduction states, the charging gun module outputs different powers.

2. The charging pile circuit according to claim 1, characterized in that: The charging modules include two types, the first type of charging module is directly connected to the contactor module, and the second type of charging module is connected to the contactor module via the switch module, and the number of the second type of charging modules is greater than 1.

3. The charging pile circuit according to claim 1, characterized in that: The charging gun module includes at least two charging guns; the contactor module includes at least two contactors; the switch module includes at least two output terminals; the number of the contactors, the number of the charging guns and the number of the output terminals of the switch module are equal; Each output end of the switch module is connected to a charging gun via a contactor.

4. The charging pile circuit according to claim 3, characterized in that: The charging modules include two types: The first type of charging module is directly connected to one of the contactors, and the number of the first type of charging modules is equal to the number of the contactors; The second type of charging module is connected to the contactor module via the switch module, and the number of the second type of charging module is greater than or equal to 1.

5. The charging pile circuit according to claim 4, characterized in that: The first end of each contactor is connected to a charging gun, and the first ends of different contactors are connected to different charging guns; The second end of each of the contactors is directly connected to a first charging module, and the second ends of different contactors are directly connected to different charging modules; The switch module includes a first type of switch and a second type of switch; The first switch is connected between the second ends of the two contactors; The second switch is connected between a second end of the contactor and the second charging module.

6. The charging pile circuit according to claim 5, characterized in that: The charging gun module includes a first charging gun and a second charging gun; the contactor module includes a first contactor and a second contactor; The first switch comprises one; the first switch is connected between the second end of the first contactor and the second end of the second contactor; The number of the second switches is twice the number of the second charging modules; each of the second charging modules is connected to the second end of the first contactor via a second switch, and is connected to the second end of the second contactor via another second switch.

7. The charging pile circuit according to claim 6, characterized in that: The second charging module includes a first charging module and a second charging module; The second switch includes a first switch, a second switch, a third switch and a fourth switch; The first charging module is connected to the second end of the first contactor through the first switch, and is connected to the second end of the second contactor through the second switch; The second charging module is connected to the second end of the first contactor through the third switch, and is connected to the second end of the second contactor through the fourth switch.

8. The charging pile circuit according to any one of claims 1 to 7, characterized in that: The switches in the switch module are all relays.

9. The charging pile circuit according to any one of claims 1 to 7, characterized in that: All the charging modules have the same power.

10. A charging pile, characterized in that: The charging pile comprises the charging pile circuit as described in any one of claims 1 to 9.

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