Direct current charging pile

Abstract

The utility model discloses a direct current charging pile, which comprises a shell with an opening; the cover body is detachably connected to the opening of the shell, and a first inner cavity is formed between the cover body and the shell; the alternating current input module is arranged in the first inner cavity and is used for inputting alternating current; the rectification module is arranged in the first inner cavity, is electrically connected with the alternating current input module and is used for inputting alternating current and converting the alternating current into direct current to be output; the direct current output module is arranged in the first inner cavity, is electrically connected with the rectification module and is used for inputting the direct current output by the rectification module and outputting the direct current to the electric appliance when the electric appliance needs to use electricity; and the weak current module is arranged on the cover body. By using the direct current charging pile disclosed by the invention, the problem that a household alternating current charging pile in the prior art is low in power and low in charging speed, so that the requirement of quickly charging a household electric vehicle cannot be met can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of charging piles and relates to a DC charging pile. Background Art

[0002] In today's world, new energy and low-carbon economy have become the main theme of economic development, and electric vehicles, as an important part of new energy strategy and smart grid, will surely become the focus of the development of the world's automobile industry and energy industry in the future. The electric vehicle industry is a systematic project, in which the charging of electric vehicles is one of its main links. In recent years, clean energy electric vehicles have developed rapidly, and users' demand for charging implementation has also increased. At present, household electric vehicles are mainly charged by AC charging piles. However, household AC charging piles have low power and slow charging speed, which can no longer meet the requirements of household fast charging. Utility Model Content

[0003] The present application provides a DC charging pile, which is used to solve the problem that the household AC charging piles in the prior art have low power and slow charging speed, resulting in the inability to meet the requirements for fast charging of household electric vehicles.

[0004] In order to solve the above technical problems, the present application provides a DC charging pile, which includes:

[0005] a housing having an opening;

[0006] A cover body, the cover body is detachably connected to the opening of the shell, and a first inner cavity is formed between the cover body and the shell;

[0007] an AC input module, the AC input module being disposed in the first inner cavity and being used to input AC power;

[0008] A rectifier module, which is disposed in the first inner cavity and is electrically connected to the AC input module, and is used to input AC power and convert the AC power into DC power for output;

[0009] A DC output module, which is disposed in the first inner cavity and is electrically connected to the rectifier module, and is used to input the DC power output by the rectifier module and output the DC power to the electrical appliance when the electrical appliance needs power;

[0010] A weak current module, wherein the weak current module is arranged on the cover;

[0011] The weak current module includes at least one of an indicator light panel, a liquid crystal screen, a card reader, a PLC communication module and a main control panel.

[0012] Optionally, the DC charging pile further includes:

[0013] An insulating partition plate is disposed in the first inner cavity and between the AC input module and the DC output module.

[0014] Optionally, the DC charging pile further includes:

[0015] A first partition plate, wherein the first partition plate is located in the first inner cavity, and the first partition plate divides the first inner cavity into a first sub-inner cavity and a second sub-inner cavity. The AC input module and the DC output module are arranged in the first sub-inner cavity, and the rectifier module is arranged in the second sub-inner cavity.

[0016] Optionally, the DC charging pile further includes:

[0017] A cooling fan is disposed in the second sub-inner cavity and is disposed on an air outlet side of the rectifier module.

[0018] Optionally, the shell has a detachable first filter, the air outlet of the cooling fan is close to the first filter, and the air inlet of the cooling fan is close to the air outlet side of the rectifier module.

[0019] Optionally, the shell has a detachable second filter screen, and the air inlet side of the rectifier module is close to the second filter screen.

[0020] Optionally, the DC charging pile further includes:

[0021] The buckle is arranged on the outer wall of the shell.

[0022] Optionally, a guide groove is provided on the outer edge of the buckle along the buckling direction of the buckle.

[0023] Optionally, the shell is provided with a waterproof flange at the opening and away from the opening.

[0024] Optionally, the maximum power of the rectifier module is 40 kilowatts.

[0025] Compared with the prior art, the DC charging pile provided by the present application has the following beneficial effects:

[0026] The AC input module of the DC charging pile in this application can input external AC power, the rectifier module can convert the input AC power into DC power output, and the DC input module can convert the DC power output by the rectifier module into DC power suitable for home electric vehicles, and then output it to home electric vehicles for use; it can be understood that the DC power output by the DC charging pile in this application to the home electric vehicle can be directly used by the electric vehicle, compared with the AC charging pile in the prior art that can only input AC power into the electric vehicle, and further requires the on-board charger of the electric vehicle (the on-board charger has relatively small power due to volume limitations) to convert AC power to obtain DC power that can be used by the electric vehicle. The DC charging pile has a greater charging power for the electric vehicle and a faster charging rate. In summary, the DC charging pile in this application can solve the problem that the home AC charging pile in the prior art has low power and slow charging speed, which cannot meet the requirements of fast charging of home electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application, rather than all the embodiments. For ordinary technicians in this field, without paying creative work, other drawings obtained based on these drawings all fall within the scope of protection of this application.

[0028] Figure 1 This is a schematic diagram of opening a DC charging pile provided in an embodiment of the present application;

[0029] Figure 2 It is a structural schematic diagram of a weak current module provided in an embodiment of the present application;

[0030] Figure 3 is a three-dimensional structural diagram of a DC charging pile provided in an embodiment of the present application in a certain direction;

[0031] Figure 4 is a three-dimensional structural diagram of a DC charging pile provided in an embodiment of the present application in another direction;

[0032] Figure 5 It is a schematic diagram of the structure of a buckle provided in an embodiment of the present application.

[0033] Description of the figure number:

[0034] 100-shell, 110-first inner cavity, 111-first sub-inner cavity, 112-second sub-inner cavity, 120-first filter, 130-second filter, 200-cover, 300-AC output module, 400-rectifier module, 500-DC output module, 600-weak current module, 610-indicator light board, 620-LCD screen, 630-card reader, 640-PLC communication module, 650-main control board, 700-cooling fan, 800-buckle, 810-guide groove. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] In order to make the description of the disclosed content more detailed and complete, the following is an illustrative description of the implementation methods and specific examples of the present application; however, this is not the only form of implementing or applying the specific embodiments of the present application. The implementation methods cover the features of multiple specific embodiments and the method steps and their sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and step sequences. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0038] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two, and other quantifiers are similar. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application, and the embodiments of the present application and the features in the embodiments may be combined with each other without conflict.

[0039] like Figure 1The figure shows a schematic diagram of opening a DC charging pile provided in an embodiment of the present application. The DC charging pile comprises:

[0040] A housing 100 having an opening;

[0041] A cover body 200, wherein the cover body 200 is detachably connected to the opening of the housing 100, and a first inner cavity 110 is formed between the cover body 200 and the housing 100;

[0042] an AC input module 300, the AC input module 300 being disposed in the first inner cavity 110 and being used for inputting AC power;

[0043] A rectifier module 400, which is disposed in the first inner cavity 110 and is electrically connected to the AC input module 300, and is used to input AC power and convert the AC power into DC power for output;

[0044] A DC output module 500, which is disposed in the first inner cavity 110 and is electrically connected to the rectifier module 400, and is used to input the DC power output by the rectifier module 400, and output the DC power to the electrical appliance when the electrical appliance needs power;

[0045] like Figure 2 FIG. 1 is a schematic structural diagram of a weak current module 600 provided in an embodiment of the present application, wherein the weak current module 600 is disposed on the cover 200;

[0046] The weak current module 600 includes at least one of an indicator light board 610 , a liquid crystal screen 620 , a card reader 630 , a PLC communication module 640 , and a main control board 650 .

[0047] Specifically, the shape of the shell 100 can be any shape that can form a shell, for example, the shape of the shell 100 can be hemispherical or cylindrical; specifically, the material of the shell 100 can be any material with a certain bearing function, optionally, the material of the shell 100 can be a material with insulating properties to ensure the safety of the user when using the charging pile.

[0048] Specifically, the shape of the cover body 200 can be any shape that can form a cover, for example, the shape of the cover body 200 can be flat or curved; specifically, the material of the cover body 200 can be any material, optionally, the material of the cover body 200 can be a material with insulating properties to protect the safety of users when using the charging pile.

[0049] Specifically, the AC input module 300 can be any module that allows the user to input external AC power into the charging pile. For example, the AC input module 300 may include an incoming molded case circuit breaker, a lightning arrester, a lightning arrester, and a PE protective ground bar. It should be noted that the incoming molded case circuit breaker, a lightning arrester, a lightning arrester, and a PE protective ground bar are relatively common components in the charging pile AC input module 300 in the related field. Their connection relationship and specific functions are relatively mature technologies in the related field and will not be described in detail here.

[0050] It should be noted that the AC input module 300 can be located at any position of the first inner cavity 110;

[0051] Further optionally, in order to locate the AC input module 300 in the first inner cavity 110 , the AC input module 300 may be mounted on the inner wall of the housing 100 .

[0052] Specifically, the rectifier module 400 can be any module with a rectifying function. For example, the rectifier module 400 can include a vacuum tube, an ignition tube, and a semiconductor diode. The rectifier module 400 is a relatively mature working module in the relevant field and will not be described in detail here.

[0053] More specifically, in order to locate the rectifier module 400 in the first inner cavity 400 , the rectifier module 400 may be mounted on the inner wall of the housing 100 .

[0054] Specifically, the DC output module 500 can be any DC output module 500 that can convert the DC power output by the rectifier module 400 into DC power suitable for use in electric vehicles. For example, the DC output module 500 may include a DC contactor, a shunt, a fuse, and a copper busbar assembly. It should be noted that the DC contactor, the shunt, the fuse, and the copper busbar assembly are relatively common components in the DC output module 500 of the charging pile in the related field. Their connection relationship and specific functions are relatively mature technologies in the related field and are not described in detail here.

[0055] It should be noted that the DC output module 500 can be located at any position of the first inner cavity 110;

[0056] Further optionally, in order to locate the DC output module 500 in the first inner cavity 110 , the DC output module 500 may be installed on the inner wall of the housing 100 .

[0057] It can be understood that weak current is a voltage with an AC voltage lower than 36V and a DC voltage lower than 24V. Therefore, it can be understood that the weak current module 600 is a module with an AC voltage lower than 36V and a DC voltage lower than 24V. The weak current module 600 can be a module composed of any weak current electrical equipment. For example, the weak current module can include an indicator light board 610, an LCD screen 620, a card reader 630, a programmable logic controller (PLC) communication module 640 and at least one of a main control board 650.

[0058] Specifically, the indicator light board 610 can be used to indicate the operating status of the charging pile, for example, it can include a main power indicator light, a first charging gun indicator light and an Nth (N is a positive integer) charging gun indicator light, which are used to indicate whether the main power supply and the charging gun are working normally; the LCD screen 620 can be used to display the operating status and parameters of each module of the charging pile when charging through the charging pile, the card reader 630 can be used to read the electric card to start the charging pile to charge the electric vehicle, and the card reader 630 can also be used to settle the charging fees, the PLC communication module 640 can be used to remotely receive control signals, and the main control board 650 can be used to select the charging mode or the amount of electricity required to be charged, etc.

[0059] It can be understood that by setting the weak-current module 600 on the cover body 200 and installing the strong-current modules such as the AC input module 300, the rectifier module 400 and the DC output module 500 in the first inner cavity 110, the strong-current module and the weak-current module 600 of the charging pile can be separated. If the strong-current equipment and the weak-current equipment are set together, the electromagnetic interference and voltage fluctuation problems that may exist in the strong-current equipment will affect the normal operation of the weak-current equipment. Therefore, separating the strong-current module and the weak-current module 600 can reduce the interference of strong electricity on weak electricity and improve the reliability and stability of the weak-current module 600.

[0060] The AC input module 300 of the DC charging pile in this embodiment can input external AC power, the rectifier module 400 can convert the input AC power into DC power output, and the DC input module 500 can convert the DC power output by the rectifier module 400 into DC power suitable for home electric vehicles, and then output it to home electric vehicles for use; it can be understood that the DC power output by the DC charging pile in this embodiment to the home electric vehicle can be directly used by the electric vehicle, compared with the AC charging pile in the prior art that can only input AC power into the electric vehicle, and further requires the on-board charger of the electric vehicle (the on-board charger has relatively small power due to volume limitations) to convert AC power to obtain DC power that can be used by the electric vehicle. The DC charging pile has a greater charging power for the electric vehicle and a faster charging rate. In summary, the DC charging pile in this application can solve the problem that the home AC charging pile in the prior art has low power and slow charging speed, which cannot meet the requirements of fast charging of home electric vehicles.

[0061] In an optional implementation, Figure 1 As shown, the DC charging pile also includes:

[0062] An insulating partition plate (not shown in the figure), wherein the insulating partition plate is disposed in the first inner cavity 110 , and the insulating partition plate is disposed between the AC input module 300 and the DC output module 500 .

[0063] Specifically, the insulating partition board may be any partition board having an insulating function. For example, the insulating partition board may be made of glass, plastic, or quartz.

[0064] It can be understood that the insulating partition board can isolate the AC input module 300 from the DC output module 500 .

[0065] Further optionally, in order to achieve better isolation between the AC input module 300 and the DC output module 500, the area of ​​a side of the insulating partition plate close to the AC input module 300 can be greater than or equal to the cross-sectional area of ​​the AC input module 300, and the area of ​​a side of the insulating partition plate close to the DC output module 500 can be greater than or equal to the cross-sectional area of ​​the DC output module 500.

[0066] In an optional implementation, Figure 1 As shown, the DC charging pile also includes:

[0067] A first partition plate (not shown in the figure) is located in the first inner cavity 110. The first partition plate divides the first inner cavity 110 into a first sub-inner cavity 111 and a second sub-inner cavity 112. The AC input module 300 and the DC output module 500 are arranged in the first sub-inner cavity 111, and the rectifier module 400 is arranged in the second sub-inner cavity 112.

[0068] It should be noted that the installation position of the first partition plate in the first inner cavity 110 can be any installation position that enables the first partition plate to divide the first inner cavity 110 into the first sub-inner cavity 111 and the second sub-inner cavity 112. For example, if the housing 100 is a hollow cuboid, the four sides of the first partition plate 800 can be respectively connected to the four adjacent sides of the housing 100, so that the first inner cavity 110 can be divided into the first sub-inner cavity 111 and the second sub-inner cavity 112. In this way, when the AC input module 300 and the DC output module 500 are arranged in the first sub-inner cavity 111 and the rectifier module 400 is arranged in the second sub-inner cavity 112, the AC input module 300, the DC output module 500 and the rectifier module 400 can be separated. The rectifier module 400 generates a lot of heat when working. By separating the rectifier module 400 separately, it can be avoided that the heat generated by the rectifier module 400 affects the AC input module 300 and the DC output module 500.

[0069] In an optional implementation, Figure 1 As shown, the DC charging pile also includes:

[0070] The cooling fan 700 is disposed in the second sub-inner cavity 112 , and the cooling fan 700 is disposed on the air outlet side of the rectifier module 400 .

[0071] It should be noted that in this implementation, a cooling fan 700 is provided on the air outlet side of the rectifier module 400 to transfer the heat generated inside the DC module 400 to the air outlet side of the rectifier module 400 through the cooling fan 700 .

[0072] It can be further understood that in order to enable the heat on the air outlet side of the rectifier module 400 to be transferred to the outside of the charging pile through the cooling fan 700, an air duct can be constructed between the cooling fan 700 and the outside of the charging pile so that the heat can be transferred out through the air duct. For example, a ventilation duct can be installed between the air outlet side of the cooling fan 700 and the outside of the charging pile, and the ventilation duct can be used as an air duct.

[0073] It can be understood that by arranging the rectifier module 400 and the cooling fan 700 in the second sub-inner cavity 112, on the one hand, the rectifier module 400 can be cooled by the cooling fan 700, and on the other hand, the heat generation and heat dissipation process of the rectifier module 400 can be carried out in the second sub-inner cavity 112, which will not affect the normal operation of the AC output module 300 and the DC output module 500 in the first sub-inner cavity 111.

[0074] In an optional implementation, Figure 3 The figure shows a three-dimensional structure diagram of a DC charging pile provided in an embodiment of the present application in a certain direction, wherein the shell 100 has a detachable first filter 120, the air outlet of the cooling fan 700 is close to the first filter 120, and the air inlet of the cooling fan 700 is close to the air outlet side of the rectifier module 400.

[0075] It can be understood that, in the present implementation, the first filter 120 can firstly construct an air outlet channel between the air outlet of the cooling fan 700 and the outside of the shell 100, so that the heat generated by the rectifier module 400 can be transmitted to the outside of the shell 100; secondly, the first filter 120 is configured to be detachable, so that when the cooling fan 700 needs to be repaired and maintained, the first filter 120 can be easily removed and the cooling fan 700 can be taken out.

[0076] In an optional implementation, Figure 4 The figure shows a three-dimensional structure diagram of a DC charging pile provided in an embodiment of the present application in another direction. The housing 100 has a detachable second filter 130 , and the air inlet side of the rectifier module 400 is close to the second filter 130 .

[0077] It can be understood that by arranging the second filter 130 of the shell 100 on the air inlet side of the rectifier module 400, on the one hand, an air inlet channel can be formed between the outside of the shell 100 and the air inlet side of the rectifier module 400 through the second filter 130, so that wind can enter the rectifier module 400 through the air inlet channel, and then the heat of the rectifier module 400 can be taken away by the wind entering the air inlet channel; on the other hand, the second filter 130 is set to be detachable, so that when the rectifier module 400 needs to be repaired and maintained, the rectifier module 400 can be easily removed from the charging pile.

[0078] In an optional implementation, Figure 3 As shown, the DC charging pile also includes:

[0079] The buckle 800 is disposed on the outer wall of the shell 100 .

[0080] Specifically, the buckle 800 in the present implementation can be any buckle, for example, it can be an adjustable buckle, it can also be a spring buckle, and it can also be a self-locking buckle. For example, the buckle 800 can be at a certain angle to the outer wall of the shell 100, and the side of the buckle 800 close to the shell 100 can be provided with a snap-on structure (such as a snap-on groove) for snapping.

[0081] It can be understood that in order to install the charging pile at the place where it needs to be installed (such as a pillar or a wall) through the buckle 800, a structure that can adapt to the snap-on structure of the buckle 800 can be provided at the installation site. For example, when the snap-on structure of the buckle 800 is a snap-on groove, the structure that adapts to the snap-on structure can be a snap-on protrusion that adapts to the snap-on groove.

[0082] Optionally, in the present implementation, a mounting back panel may be provided, on which a structure compatible with the snap-fit ​​structure of the buckle 800 may be provided, so that the charging pile can be mounted on the mounting back panel. Furthermore, the mounting back panel can be installed at a place where it is required (such as a column or a wall). Specifically, the mounting back panel can be installed at the place where it is required in any manner, for example, the mounting back panel can be installed at the place where it is required by bolts.

[0083] In an optional implementation, Figure 5 The figure is a schematic structural diagram of a buckle 800 provided in an embodiment of the present application. Along the buckling direction of the buckle 800, a guide groove 810 is provided on the outer edge of the buckle.

[0084] It can be understood that by providing the guide groove 810, when the buckle 800 is overlapped with the structure that needs to be overlapped, the structure that needs to be overlapped can be overlapped with the buckle 800 through the guide groove 810, thereby avoiding deviation to other places when overlapping with the buckle 800, thereby ensuring the stability of the connection.

[0085] In an optional implementation, the housing 100 is provided at the opening with a waterproof flange (not shown in the figure) away from the opening.

[0086] It can be understood that the waterproof flange can allow moisture in the opening of the shell 100 to be discharged from the charging pile, thereby preventing moisture from entering the interior of the charging pile and causing damage to the internal circuit module.

[0087] It is understandable that in order to make the waterproof flange achieve the purpose of waterproofing, the waterproof flange extends from the opening of the shell 100 to the outer wall of the shell 100 so that the waterproof flange can form a certain angle with the shell 100, thereby allowing water to flow out along the waterproof flange.

[0088] In an optional implementation, the maximum power of the rectifier module 400 is 40 kilowatts.

[0089] It should be noted that, in view of a series of improvements made to the charging pile structure in the present application, the charging pile of the present application can use a higher-power rectifier module 400. After actual application on site, the maximum power that can be selected by the rectifier module 400 is 40 kilowatts.

[0090] The technical solution provided by the present application is introduced in detail above. The principles and implementation methods of the present application are explained by using specific examples in the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0091] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A DC charging pile, characterized in that: include: a housing having an opening; A cover body, the cover body is detachably connected to the opening of the shell, and a first inner cavity is formed between the cover body and the shell; an AC input module, the AC input module being disposed in the first inner cavity and being used to input AC power; A rectifier module, which is disposed in the first inner cavity and is electrically connected to the AC input module, and is used to input AC power and convert the AC power into DC power for output; A DC output module, which is disposed in the first inner cavity and is electrically connected to the rectifier module, and is used to input the DC power output by the rectifier module and output the DC power to the electrical appliance when the electrical appliance needs power; A weak current module, wherein the weak current module is arranged on the cover; The weak current module includes at least one of an indicator light panel, a liquid crystal screen, a card reader, a PLC communication module and a main control panel.

2. The DC charging pile according to claim 1, characterized in that: Also includes: An insulating partition plate is disposed in the first inner cavity and between the AC input module and the DC output module.

3. The DC charging pile according to claim 1, characterized in that: Also includes: A first partition plate, wherein the first partition plate is located in the first inner cavity, and the first partition plate divides the first inner cavity into a first sub-inner cavity and a second sub-inner cavity. The AC input module and the DC output module are arranged in the first sub-inner cavity, and the rectifier module is arranged in the second sub-inner cavity.

4. The DC charging pile according to claim 3, characterized in that: Also includes: A cooling fan is disposed in the second sub-inner cavity and is disposed on an air outlet side of the rectifier module.

5. The DC charging pile according to claim 4, characterized in that: The shell has a detachable first filter screen, the air outlet of the cooling fan is close to the first filter screen, and the air inlet of the cooling fan is close to the air outlet side of the rectifier module.

6. The DC charging pile according to claim 5, characterized in that: The shell has a detachable second filter screen, and the air inlet side of the rectifier module is close to the second filter screen.

7. The DC charging pile according to claim 1, characterized in that: Also includes: The buckle is arranged on the outer wall of the shell.

8. The DC charging pile according to claim 7, characterized in that: Along the buckling direction of the buckle, a guide groove is arranged on the outer edge of the buckle.

9. The DC charging pile according to claim 1, characterized in that: The shell is provided with a waterproof flange at the opening and away from the opening.

10. The DC charging pile according to claim 1, characterized in that: The maximum power of the rectifier module is 40 kilowatts.

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