Multi-power switching direct current charging pile

Abstract

The utility model relates to a multi-power switching DC charging pile. The charging pile body is provided with a controller, an electric energy meter, a first power distribution contactor, a second power distribution contactor, a third power distribution contactor, a fourth power distribution contactor, a fifth power distribution contactor, a sixth power distribution contactor, a first charging module, a second charging module, a third charging module and a fourth charging module; the current passing through the first charging gun and the second charging gun can be intuitively and timely known at any time through the electric energy meter; the first charging gun or the second charging gun can independently charge the new energy automobile through multi-power switching, namely 100%, 75%, 50% and 25%, the first charging gun and the second charging gun can charge the new energy automobile at the same time, and charging is carried out through matching of four different power switching of 50% and 50%, 25% and 50%, 50% and 25% and 25% and 25%; therefore, power distribution is finer, different use requirements of users can be met, and use is more comfortable and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current charging piles, in particular to a multi-power switching direct current charging pile. Background Art

[0002] Currently, most electric vehicle charging piles use one machine and one gun or one machine and two guns.

[0003] Some of the dual-charger charging piles on the market can only be used alternately at different times and cannot charge two electric vehicles at the same time. Later, a charging pile that can charge two electric vehicles at the same time appeared.

[0004] However, when both guns need to be charged, it can usually only distribute the power evenly, but cannot dynamically adjust the output power according to the needs of electric vehicles, and cannot achieve more detailed power distribution. For example, one car only needs 25% of the power to charge, while the other needs 50% of the power to charge.

[0005] In addition, although the existing devices for power output of the first charging gun and the second charging gun are installed in one cabinet, the two sets of equipment are independent and cannot share the charging module to work, so it is not a true dual-gun charging pile.

[0006] Therefore, in the utility model patent application, the applicant carefully studied a multi-power switching DC charging pile to solve the above problems. Utility Model Content

[0007] In view of the deficiencies in the above-mentioned prior art, the utility model mainly aims to provide a multi-power switching DC charging pile, which can intuitively and timely understand the current passing through the first charging gun and the second charging gun through the electric energy meter at any time; on the one hand, the first charging gun or the second charging gun can charge the new energy vehicle with multiple power switching, namely 100%, 75%, 50% and 25%; on the other hand, the first charging gun and the second charging gun can charge the new energy vehicle at the same time, and charge with four different power switching combinations of 50% and 50%, 25% and 50%, 50% and 25%, and 25% and 25% respectively, so that the power distribution is more refined, which can meet the different usage needs of users and is more comfortable and convenient to use.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0009] A multi-power switching DC charging pile, comprising a charging pile body and a first charging gun and a second charging gun respectively connected to the charging pile body;

[0010] The charging pile body is provided with a controller, an electric energy meter, a first power distribution contactor, a second power distribution contactor, a third power distribution contactor, a fourth power distribution contactor, a fifth power distribution contactor, a sixth power distribution contactor, a first charging module, a second charging module, a third charging module, a fourth charging module, and a first shunt and a second shunt for connecting the electric energy meter respectively;

[0011] The first power distribution contactor is connected to the second power distribution contactor through a first copper busbar, and the positive output end of the first charging module is connected to the first copper busbar;

[0012] The second power distribution contactor is connected to the third power distribution contactor through a second copper busbar, and the positive output end of the second charging module is connected to the second copper busbar;

[0013] The fourth power distribution contactor is connected to the fifth power distribution contactor through a third copper busbar, and the negative output end of the first charging module is connected to the third copper busbar;

[0014] The fifth power distribution contactor is connected to the sixth power distribution contactor through a fourth copper busbar, and the negative output end of the second charging module is connected to the fourth copper busbar;

[0015] The positive and negative input terminals of the first charging gun are respectively connected to the first output contactor and the second output contactor, the first output contactor is connected to the first power distribution contactor through the fifth copper bar, and the positive output terminal of the third charging module is connected to the fifth copper bar; the first shunt is connected in series between the second output contactor and the fourth power distribution contactor, the first shunt is connected to the fourth power distribution contactor through the sixth copper bar, and the negative output terminal of the third charging module is connected to the sixth copper bar;

[0016] The positive and negative input terminals of the second charging gun are respectively connected to the third output contactor and the fourth output contactor, the third output contactor is connected to the third power distribution contactor through the seventh copper busbar, and the positive output terminal of the fourth charging module is connected to the seventh copper busbar;

[0017] The second shunt is connected in series between the fourth output contactor and the sixth power distribution contactor, the second shunt is connected to the sixth power distribution contactor through the eighth copper bus, and the negative output end of the fourth charging module is connected to the eighth copper bus;

[0018] The electric energy meter is connected to the controller to transmit the current signal entering the first charging gun and the second charging gun to the controller, and the controller is respectively connected to the first power distribution contactor, the second power distribution contactor, the third power distribution contactor, the fourth power distribution contactor, the fifth power distribution contactor and the sixth power distribution contactor to control the state of the corresponding contactor according to different charging power requirements and then automatically connect or cut off one or more charging modules.

[0019] As a preferred solution, it further includes a first current fuse, the first output contactor is connected to the first current fuse, and the first current fuse is connected to the first power distribution contactor through a fifth copper busbar.

[0020] As a preferred solution, a second current fuse is further included, the third output contactor is connected to the second current fuse, and the second current fuse is connected to the third power distribution contactor through a seventh copper busbar.

[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, the utility model mainly cooperates with the first shunt and the second shunt to intuitively and timely understand the current passing through the first charging gun and the second charging gun at any time through the electric energy meter; in particular, through the cooperation of the first power distributor to the sixth power distribution contactor and the first charging module to the fourth charging module, on the one hand, the first charging gun or the second charging gun can be used to charge the new energy vehicle with multiple power switching, i.e., 100%, 75%, 50% and 25%, and on the other hand, the first charging gun and the second charging gun can be used to charge the new energy vehicle at the same time, and they can be charged with four different power switching combinations of 50% and 50%, 25% and 50%, 50% and 25%, and 25% and 25%, respectively. Then, the power distribution is more refined, which can meet the different use needs of users and is more comfortable and convenient to use.

[0022] Secondly, through the cooperation of the first current fuse and the second fuse, the first charging gun and the second charging gun have a short-circuit protection function, which greatly improves the use safety of the first charging gun and the second charging gun.

[0023] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a general control principle block diagram of an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] 11. First charging gun 12. Second charging gun

[0028] 13. First output contactor 14. Second output contactor

[0029] 15. Third output contactor 16. Fourth output contactor

[0030] 20. Controller 30. Electricity meter

[0031] 41. First power distribution contactor 42. Second power distribution contactor

[0032] 43. Third power distribution contactor 44. Fourth power distribution contactor

[0033] 45. Fifth power distribution contactor 46. Sixth power distribution contactor

[0034] 51. First charging module 52. Second charging module

[0035] 53. Third charging module 54. Fourth charging module

[0036] 55. First diverter 56. Second diverter

[0037] 57. First current fuse 58. Second current fuse

[0038] 61. First copper bar 62. Second copper bar

[0039] 63. The third copper bar 64. The fourth copper bar

[0040] 65. Fifth copper bar 66. Sixth copper bar

[0041] 67. The seventh copper bar. 68. The eighth copper bar. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0043] like Figure 1 and Figure 2 As shown, a multi-power switching DC charging pile includes a charging pile body and a first charging gun 11 and a second charging gun 12 respectively connected to the charging pile body.

[0044] The charging pile body is provided with a controller 20, an electric energy meter 30, a first power distribution contactor 41, a second power distribution contactor 42, a third power distribution contactor 43, a fourth power distribution contactor 44, a fifth power distribution contactor 45, a sixth power distribution contactor 46, a first charging module 51, a second charging module 52, a third charging module 53, a fourth charging module 54, and a first shunt 55 and a second shunt 56 for connecting the electric energy meter 30 respectively;

[0045] The first power distribution contactor 41 is connected to the second power distribution contactor 42 via a first copper busbar 61, and the positive output end of the first charging module 51 is connected to the first copper busbar 61;

[0046] The second power distribution contactor 42 is connected to the third power distribution contactor 43 via a second copper busbar 62, and the positive output end of the second charging module 52 is connected to the second copper busbar 62;

[0047] The fourth power distribution contactor 44 is connected to the fifth power distribution contactor 45 through the third copper busbar 63, and the negative output end of the first charging module 51 is connected to the third copper busbar 63;

[0048] The fifth power distribution contactor 45 is connected to the sixth power distribution contactor 46 via the fourth copper busbar 64, and the negative output end of the second charging module 52 is connected to the fourth copper busbar 64;

[0049] The positive and negative input terminals of the first charging gun 11 are respectively connected to the first output contactor 13 and the second output contactor 14, the first output contactor 13 is connected to the first power distribution contactor 41 through the fifth copper busbar 65, and the positive output terminal of the third charging module 53 is connected to the fifth copper busbar 65. In this embodiment, a first current fuse 57 is also included, the first output contactor 13 is connected to the first current fuse 57, and the first current fuse 57 is connected to the first power distribution contactor 41 through the fifth copper busbar 65.

[0050] The first shunt 55 is connected in series between the second output contactor 14 and the fourth power distribution contactor 44, the first shunt 55 is connected to the fourth power distribution contactor 44 through the sixth copper bus 66, and the negative output end of the third charging module 53 is connected to the sixth copper bus 66;

[0051] The positive and negative input terminals of the second charging gun 12 are respectively connected to the third output contactor 15 and the fourth output contactor 16, the third output contactor 15 is connected to the third power distribution contactor 43 through the seventh copper busbar 67, and the positive output terminal of the fourth charging module 54 is connected to the seventh copper busbar 67; in this embodiment, a second current fuse is also included, the third output contactor 15 is connected to the second current fuse 58, and the second current fuse 58 is connected to the third power distribution contactor 43 through the seventh copper busbar 67.

[0052] The second shunt 56 is connected in series between the fourth output contactor 16 and the sixth power distribution contactor 46, the second shunt 56 is connected to the sixth power distribution contactor 46 through the eighth copper bus 68, and the negative output end of the fourth charging module 54 is connected to the eighth copper bus 68;

[0053] The energy meter 30 is connected to the controller 20 to transmit the current signal entering the first charging gun 11 and the second charging gun 12 to the controller 20, and the controller 20 is respectively connected to the first power distribution contactor 41, the second power distribution contactor 42, the third power distribution contactor 43, the fourth power distribution contactor 44, the fifth power distribution contactor 45 and the sixth power distribution contactor 46 to control the state of the corresponding contactor according to different charging demand powers and then automatically connect or cut off one or more charging modules. Each charging module can provide 25% power to the charging gun for charging.

[0054] Next, the working principle is roughly described (the first power distribution contactor 41 and the third power distribution contactor 43 are defined as the first power distribution contactor 41 component, the second power distribution contactor 42 and the fourth power distribution contactor 44 are the second power distribution contactor 42 component, and the third power distribution contactor 43 and the sixth power distribution contactor 46 are the third power distribution contactor 43 component):

[0055] 1. When only the first charging gun 11 needs to output at full power, except that the third output contactor 15 and the fourth output contactor 16 are disconnected, the other contactors are closed, that is, the first power distribution contactor 41, the second power distribution contactor 42, the third power distribution contactor 43, the fourth power distribution contactor 44, the fifth power distribution contactor 45, the sixth power distribution contactor 46, the first output contactor 13 and the second output contactor 14 are all closed, which is equivalent to the first charging module 51, the second charging module 52, the third charging module 53 and the fourth charging module 54 are all connected to the first charging gun 11, and then the first charging gun 11 can be used to quickly charge the new energy vehicle at maximum power (100% power);

[0056] Similarly, if only the second charging gun 12 needs to output full power, except that the first output contactor 13 and the second output contactor 14 are both disconnected, the other contactors are closed, which is equivalent to the first charging module 51, the second charging module 52, the third charging module 53 and the fourth charging module 54 are all connected to the second charging gun 12. Then, the second charging gun 12 can be used to quickly charge the new energy vehicle at maximum power (100% power).

[0057] 2. When only the first charging gun 11 needs to output at 75% power, except for the third output contactor 15, the fourth output contactor 16 and the third power distribution contactor 43, all components are disconnected, and the other contactors are closed, which is equivalent to the first charging module 51, the second charging module 52 and the third charging module 53 are all connected to the first charging gun 11. Then, the first charging gun 11 can quickly charge the new energy vehicle with 75% power;

[0058] Similarly, if only the second charging gun 12 needs to output at 75% power, except for the first output contactor 13, the second output contactor 14 and the first power distribution contactor 41 components are disconnected, the remaining contactors are closed, which is equivalent to the second charging module 52, the third charging module 53 and the fourth charging module 54 are all connected to the second charging gun 12. Then, the second charging gun 12 can quickly charge the new energy vehicle with 75% power.

[0059] 3. When the first charging gun 11 and the second charging gun 12 are needed to quickly charge two different new energy vehicles at the same time, it is only necessary to disconnect the second power distribution contactor 42 component. If no other contactors are disconnected, it is equivalent to that the first charging module 51 and the third charging module 53 are both connected to the first charging gun 11, and then the first charging gun 11 can use 50% power to quickly charge the new energy vehicle. At the same time, the second charging module 52 and the fourth charging module 54 are both connected to the second charging gun 12, and then the second charging gun 12 can use 50% power to quickly charge another new energy vehicle, and then the two guns can charge the corresponding new energy vehicles at 50% power at the same time.

[0060] a. If it is necessary to realize that the first charging gun 11 and the second charging gun 12 charge the corresponding new energy vehicle at 25% power at the same time, it is also necessary to disconnect the first power distribution contactor 41 component and the third power distribution contactor 43 component, which is equivalent to only the third charging module 53 being connected to the first charging gun 11, and then the first charging gun 11 can use 25% power to quickly charge a new energy vehicle. At the same time, only the fourth charging module 54 is connected to the second charging gun 12, and then the second charging gun 12 can use 25% power to quickly charge another new energy vehicle.

[0061] b. If it is necessary to realize that the first charging gun 11 and the second charging gun 12 charge the corresponding new energy vehicles at 25% power and 50% power respectively, the first power distribution contactor 41 component needs to be disconnected, which is equivalent to only the third charging module 53 being connected to the first charging gun 11, and then the first charging gun 11 can use 25% power to quickly charge a new energy vehicle. At the same time, the second charging module 52 and the fourth charging module 54 are both connected to the second charging gun 12, and then the second charging gun 12 can use 50% power to quickly charge another new energy vehicle.

[0062] c. If it is necessary to realize that the first charging gun 11 and the second charging gun 12 charge the corresponding new energy vehicles at 50% power and 25% power respectively, the third power distribution contactor 43 component needs to be disconnected, which is equivalent to the first charging module 51 and the third charging module 53 being connected to the first charging gun 11, and then the first charging gun 11 can use 50% power to quickly charge a new energy vehicle. At the same time, only the fourth charging module 54 is connected to the second charging gun 12, and then the second charging gun 12 can use 25% power to quickly charge another new energy vehicle.

[0063] The key points of the design of the utility model are that, mainly through the cooperation of the first shunt and the second shunt, the current passing through the first charging gun and the second charging gun can be intuitively and timely understood at any time through the electric energy meter; in particular, through the cooperation of the first power distributor to the sixth power distribution contactor and the first charging module to the fourth charging module, on the one hand, the first charging gun or the second charging gun can be used to charge the new energy vehicle with multiple power switching, i.e., 100%, 75%, 50% and 25%, and on the other hand, the first charging gun and the second charging gun can be used to charge the new energy vehicle at the same time, and they can be charged with four different power switching combinations of 50% and 50%, 25% and 50%, 50% and 25%, and 25% and 25%, respectively, so that the power distribution is more refined, which can meet the different use needs of users and is more comfortable and convenient to use;

[0064] Secondly, through the cooperation of the first current fuse and the second fuse, the first charging gun and the second charging gun have a short-circuit protection function, which greatly improves the use safety of the first charging gun and the second charging gun.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-power switching DC charging pile, characterized in that: It includes a charging pile body and a first charging gun and a second charging gun respectively connected to the charging pile body; The charging pile body is provided with a controller, an electric energy meter, a first power distribution contactor, a second power distribution contactor, a third power distribution contactor, a fourth power distribution contactor, a fifth power distribution contactor, a sixth power distribution contactor, a first charging module, a second charging module, a third charging module, a fourth charging module, and a first shunt and a second shunt for connecting the electric energy meter respectively; The first power distribution contactor is connected to the second power distribution contactor through a first copper busbar, and the positive output end of the first charging module is connected to the first copper busbar; The second power distribution contactor is connected to the third power distribution contactor through a second copper busbar, and the positive output end of the second charging module is connected to the second copper busbar; The fourth power distribution contactor is connected to the fifth power distribution contactor through a third copper busbar, and the negative output end of the first charging module is connected to the third copper busbar; The fifth power distribution contactor is connected to the sixth power distribution contactor through a fourth copper busbar, and the negative output end of the second charging module is connected to the fourth copper busbar; The positive and negative input terminals of the first charging gun are respectively connected to the first output contactor and the second output contactor, the first output contactor is connected to the first power distribution contactor through the fifth copper bar, and the positive output terminal of the third charging module is connected to the fifth copper bar; the first shunt is connected in series between the second output contactor and the fourth power distribution contactor, the first shunt is connected to the fourth power distribution contactor through the sixth copper bar, and the negative output terminal of the third charging module is connected to the sixth copper bar; The positive and negative input terminals of the second charging gun are respectively connected to the third output contactor and the fourth output contactor, the third output contactor is connected to the third power distribution contactor through the seventh copper busbar, and the positive output terminal of the fourth charging module is connected to the seventh copper busbar; The second shunt is connected in series between the fourth output contactor and the sixth power distribution contactor, the second shunt is connected to the sixth power distribution contactor through the eighth copper bus, and the negative output end of the fourth charging module is connected to the eighth copper bus; The electric energy meter is connected to the controller to transmit the current signal entering the first charging gun and the second charging gun to the controller, and the controller is respectively connected to the first power distribution contactor, the second power distribution contactor, the third power distribution contactor, the fourth power distribution contactor, the fifth power distribution contactor and the sixth power distribution contactor to control the state of the corresponding contactor according to different charging power requirements and then automatically connect or cut off one or more charging modules.

2. The multi-power switching DC charging pile according to claim 1, characterized in that: It also includes a first current fuse, the first output contactor is connected to the first current fuse, and the first current fuse is connected to the first power distribution contactor through a fifth copper busbar.

3. The multi-power switching DC charging pile according to claim 1, characterized in that: It also includes a second current fuse, the third output contactor is connected to the second current fuse, and the second current fuse is connected to the third power distribution contactor through a seventh copper busbar.

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