Integrated direct current charging pile

Abstract

The utility model discloses an integrated direct current charging pile, which comprises a cabinet, a plurality of main control boards, a plurality of direct current contactors, a plurality of groups of charging modules and a plurality of charging guns, the plurality of direct current contactors are arranged at the front lower part in the cabinet, and comprise straight-through direct current contactors and adjusting direct current contactors; the multiple groups of charging modules are arranged at the rear upper part in the cabinet, and at least four groups of charging modules are arranged; one of the plurality of charging guns is connected with the corresponding one of the plurality of groups of charging modules through the straight-through direct current contactors and is connected with one of the other groups of charging modules through the adjusting direct current contactors, and the plurality of charging guns, the plurality of groups of charging modules and the straight-through direct current contactors are in one-to-one correspondence; the adjusting direct current contactor is arranged between the output ends of any two of the multiple groups of charging modules; and the plurality of main control boards are arranged in the middle of the front surface of the cabinet and are connected with the plurality of direct current contactors, the plurality of groups of charging modules and the plurality of charging guns. According to the charging pile, manpower and material resources are reduced, and the output power of the multiple charging guns can be flexibly allocated.

Description

Technical Field

[0001] The present application relates to the field of charging equipment, and more specifically, to an integrated DC charging stack. Background Art

[0002] A charging pile is a device that provides electric energy for electric vehicles (EVs). It mainly uses power electronics technology to convert AC power into DC power through connection with the AC power grid, and then transmits it to the charging port of the electric vehicle to charge the electric vehicle. Charging piles generally provide two charging methods: conventional charging and fast charging. People can use a specific charging card to swipe the card on the human-computer interaction interface provided by the charging pile to perform corresponding operations such as charging method, charging time, and cost data printing. The charging pile display can display data such as charging amount, cost, and charging time.

[0003] However, the existing charging piles are basically single-gun DC charging piles. Not only does one charging pile usually only charge one car, resulting in high manpower and material costs, but also because there is no power regulation function, the charging efficiency is low. Utility Model Content

[0004] In view of this, the embodiments of the present application are directed to providing an integrated DC charging pile to solve the problems of high manpower and material costs and low charging efficiency existing in current charging piles.

[0005] In a first aspect, this specification provides an integrated DC charging stack, including: a cabinet, multiple main control boards, multiple DC contactors, multiple groups of charging modules, and multiple charging guns;

[0006] A plurality of DC contactors are installed at the front lower part of the cabinet and include a direct-through DC contactor and a regulating DC contactor;

[0007] Multiple groups of charging modules are arranged at the upper rear of the cabinet, and there are at least four groups;

[0008] There are at least 4 charging guns, one of which is connected to a corresponding group of the multiple charging modules through a direct DC contactor, and is connected to a group of other charging modules through an adjustable DC contactor. The multiple charging guns, the multiple charging modules and the direct DC contactors correspond to each other one by one, and the adjustable DC contactor is arranged between the output ends of any two groups of the multiple charging modules.

[0009] Multiple main control boards are arranged in the middle of the front of the cabinet and are connected to multiple DC contactors, multiple charging modules and multiple charging guns;

[0010] A plurality of DC contactors, a plurality of charging modules and a plurality of charging guns form a charging circuit; a plurality of main control boards can adjust the output power of a plurality of charging guns by adjusting the on and off of the DC contactors.

[0011] According to the first aspect, in a possible implementation, a fuse and a shunt are also installed at the front lower position inside the cabinet, and one of the multiple charging guns is connected to a corresponding group of the multiple charging modules through the fuse and the shunt; multiple DC contactors, fuses and shunts are connected using multiple copper busbars.

[0012] According to the first aspect, in a possible implementation, a molded case leakage protection switch and a lightning arrester are installed on the left side of the lower rear of the cabinet, and an AC contactor is installed on the right side of the lower rear of the cabinet. The molded case leakage protection switch is connected to the AC contactor with a copper busbar, and the AC contactor outputs to one group of multiple charging modules after passing through the copper busbar.

[0013] According to the first aspect, in a possible implementation, there are four charging guns and two main control boards, which respectively control two of the multiple charging guns. Five auxiliary power supplies are installed at the upper front inside the cabinet, wherein four auxiliary power supplies respectively power one of the multiple charging guns, and the other one powers the charging stack system.

[0014] According to the first aspect, in a possible implementation, two of the multiple charging guns are respectively arranged on the left and right sides of the cabinet, the cabinet has a front cabinet door, a left cabinet door and a right cabinet door, an independent gun hanging column is respectively arranged on the left and right sides of the cabinet, and a gun hanging seat is respectively arranged on the left and right sides of the middle front of the cabinet, and each of the two gun hanging columns and the two gun hanging seats is placed with one of the multiple charging guns.

[0015] According to the first aspect, in a possible implementation, two charging gun waterproof connectors are respectively provided on the left and right sides of the cabinet, two gun hanging columns and two gun hanging seats are configured with corresponding charging QR codes, and a card reader is provided in the middle and upper part of the front cabinet door.

[0016] According to the first aspect, in a possible implementation manner, a DC power meter and a plurality of relays are further provided in the middle of the front of the cabinet.

[0017] According to the first aspect, in a possible implementation manner, a top cover is configured on the top of the cabinet, and a base is configured on the bottom of the cabinet.

[0018] According to the first aspect, in a possible implementation manner, waterproof shutters and dustproof filters are installed on both the left cabinet door and the right cabinet door.

[0019] According to the first aspect, in a possible implementation manner, an LED light panel, a display screen, and an emergency stop switch are installed on the front cabinet door.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] Different from the prior art, the integrated DC charging stack provided in the present application includes: a cabinet, multiple main control boards, multiple DC contactors, multiple groups of charging modules and multiple charging guns; multiple DC contactors are installed at the front lower part of the cabinet, and include straight-through DC contactors and regulating DC contactors; multiple groups of charging modules are arranged at the rear upper part of the cabinet, and there are at least four groups; there are at least four charging guns, one of the multiple charging guns is connected to a corresponding group of the multiple groups of charging modules through a straight-through DC contactor, and is connected to a group of other groups of charging modules through an regulating DC contactor, multiple charging guns, multiple groups of charging modules and straight-through DC contactors correspond one to one, and the regulating DC contactor is arranged between the output ends of any two groups of charging modules; multiple main control boards are arranged in the middle of the front of the cabinet, and are connected to multiple DC contactors, multiple groups of charging modules and multiple charging guns; multiple DC contactors, multiple groups of charging modules and multiple charging guns form a charging circuit; multiple main control boards can adjust the output power of multiple charging guns based on the on and off of regulating DC contactors. This charging stack can charge more than 4 devices at the same time, reducing manpower and material resources. When there are idle charging guns, multiple main control boards can control the on and off of the DC contactors according to the idle status of the charging guns, change the number of charging modules connected to the charging guns, and thus flexibly allocate the output power of multiple charging guns. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an integrated DC charging stack provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of an integrated DC charging stack provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the appearance of an integrated DC charging stack provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the structure of the integrated DC charging stack after the cabinet door is opened provided in an embodiment of the present application;

[0027] Figure 5 A top view of the integrated DC charging stack provided in an embodiment of the present application with the cabinet door opened;

[0028] Figure 6 A top view of the integrated DC charging stack provided in an embodiment of the present application after deployment.

[0029] Figure markings: 1. Left cabinet door, 2. Dust filter, 3. Front cabinet door, 4. LED light board, 5. Display screen, 6. DC energy meter, 7. Card reader, 8. Emergency stop switch, 9. Charging gun, 10. Left gun hanging column, 11. Shunt, 12. Top cover, 13. Charging module, 14. Right cabinet door, 15. Charging stack system fan, 16. Auxiliary power supply, 17. Relay, 18. Main control board, 19. Copper busbar, 20. Fuse, 21. DC contactor, 22. Charging gun waterproof connector, 23. Right gun hanging column, 24. Cabinet, 25. Base, 26. AC contactor, 27. Lightning arrester, 28. Molded case leakage protection switch. DETAILED DESCRIPTION

[0030] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0031] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0032] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0033] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the three-dimensional structure of the integrated DC charging stack provided in the embodiment of the present application. Figure 2A schematic diagram of an integrated DC charging stack provided in an embodiment of the present application. The utility model provides an integrated DC charging stack, comprising: a cabinet, a plurality of main control boards 18, a plurality of DC contactors 21, a plurality of charging modules 13 and a plurality of charging guns; the plurality of DC contactors 21 are installed at the front lower part of the cabinet, and include a straight-through DC contactor and an adjusting DC contactor; the plurality of charging modules 13 are arranged at the rear upper part of the cabinet, and are at least four groups; the plurality of charging guns are at least four, one of the plurality of charging guns is connected to a corresponding group of the plurality of charging modules through a straight-through DC contactor, and is connected to a group of other charging modules through an adjusting DC contactor, the plurality of charging guns, the plurality of charging modules and the straight-through DC contactors correspond one to one, and the adjusting DC contactor is arranged between the output ends of any two groups of the plurality of charging modules; the plurality of main control boards 18 are arranged in the middle of the front of the cabinet, and are connected to the plurality of DC contactors 21, the plurality of charging modules 13 and the plurality of charging guns; the plurality of DC contactors, the plurality of charging modules and the plurality of charging guns form a charging circuit; the plurality of main control boards can adjust the output power of the plurality of charging guns based on the on-off of the adjusting DC contactors.

[0034] Multiple main control boards 18 receive information from various components and control multiple charging guns, multiple DC contactors 21 and multiple groups of charging modules 13. Each group of charging modules can include multiple charging modules, and multiple charging modules can be evenly distributed to each group of charging modules. The DC contactor is a device widely used in the field of electrical control, which is specifically used to control the on and off of DC circuits.

[0035] The charging stack can charge more than 4 devices at the same time, reducing manpower and material costs. When there are idle charging guns, multiple main control boards are used to control and adjust the on and off of the DC contactors according to the idle status of the charging guns, thereby flexibly allocating the output power of multiple charging guns.

[0036] As a preferred solution, Figure 1 and Figure 2As shown, a fuse 20 and a shunt 11 are also installed at the front lower position inside the cabinet. One of the multiple charging guns is connected to a corresponding group of multiple charging modules through the fuse and the shunt; multiple DC contactors, fuses and shunts are connected by multiple copper bars 19. The fuse is based on the current exceeding the specified value for a period of time, and the heat generated by itself melts the melt, thereby disconnecting the circuit; it uses the thermal effect principle of current to automatically cut off the circuit when the current rises abnormally to protect the safety of electrical equipment and lines. A shunt is an instrument for measuring direct current. It is made based on the principle that a voltage is generated across a resistor when a direct current passes through a resistor, and can distribute input signals or energy to multiple output ports or systems. Copper busbar, also known as copper busbar or copper busbar, is a conductive component made of high-purity copper; it usually appears as a flat long strip and has excellent conductivity and mechanical strength. The fuse realizes the safety protection of the charging gun. Multiple main control boards receive the signal of the shunt to control the corresponding charging gun. The direct DC contactor acts as the main control switch to control the corresponding charging gun. By setting the fuse and shunt, the safety and stability are enhanced.

[0037] As a preferred solution, Figure 4 As shown, a molded case leakage protection switch 28 and a lightning arrester 27 are installed on the left side of the lower back of the cabinet, and an AC contactor 26 is installed on the right side of the lower back of the cabinet. The molded case leakage protection switch 28 is connected to the AC contactor 26 with a copper bar, and the AC contactor 26 is output to one of the multiple charging modules after passing through the copper bar. The leakage protection switch, also known as a leakage protector or a leakage circuit breaker, is a new type of electrical safety device, which is mainly used to prevent electric shock accidents and electrical fires caused by leakage of electrical equipment and electrical lines. A lightning arrester, also known as a lightning arrester or a surge protector (Surge protection Device, SPD), is a device that protects electronic equipment and electrical systems from lightning hazards by guiding, releasing and isolating lightning energy. An AC contactor is an automatic switching appliance that connects or disconnects the main circuit of a motor or load, and uses electromagnetic force to close or disconnect the switch. It is suitable for frequent operation and remote control of high-voltage circuits, and has low-voltage release protection performance. By setting a leakage protection switch, a lightning arrester and an AC contactor, the safety and stability of the input AC power supply are enhanced. like Figure 4 As shown, the left view, front view and right view of the charging stack cabinet door when it is opened are respectively shown.

[0038] In order to increase the redundancy and stability of the equipment, as a preferred solution, Figure 1 and Figure 2As shown, there are four charging guns and two main control boards, each controlling two of the multiple charging guns. Five auxiliary power supplies 16 are installed on the upper front of the cabinet, of which four auxiliary power supplies respectively power one of the multiple charging guns, and the other one powers the charging stack system. The auxiliary power supply is a power supply unit (PSU or power supply for short), which is mainly responsible for converting standard alternating current (AC) into low-voltage stable direct current (DC) for use by electronic devices such as computers and televisions. Figure 2 As shown, PSU1~PSU4 can supply power to 4 charging guns respectively.

[0039] As a preferred solution, Figure 3-Figure 5 As shown, two charging guns are respectively arranged on the left and right sides of the cabinet, the cabinet has a front cabinet door 3, a left cabinet door 1 and a right cabinet door 14, and an independent gun hanging column (left gun hanging column 10 and right gun hanging column 23) is respectively arranged on the left and right sides of the cabinet, and a gun hanging seat is respectively arranged on the left and right sides of the middle of the front of the cabinet, and each of the two gun hanging columns and the two gun hanging seats is placed with one of the multiple charging guns. Figure 3 As shown, they are a stereogram, a front view, a top view and a side view of the integrated DC charging stack. For the sake of aesthetics and practicality, the left cabinet door 1 and the right cabinet door 14 can be set to open from front to back.

[0040] As a preferred solution, Figure 1 , Figure 3-Figure 5 As shown, two charging gun waterproof connectors 22 are respectively provided on the left and right sides of the cabinet, two gun hanging columns and two gun hanging seats are equipped with corresponding charging QR codes, and a card reader 7 is provided in the middle and upper part of the front cabinet door. For example, the charging guns at the back of the left and right sides are respectively placed on the left and right gun hanging columns, and the charging guns at the front of the left and right sides are respectively placed on the left and right gun hanging seats of the front cabinet door, so as to ensure the neatness of the equipment while corresponding the charging QR code with the charging gun, so as not to cause confusion and affect the use. The charging gun waterproof connector is used to prevent the charging gun from leaking electricity and enhance safety. The setting of the charging QR code and the card reader is conducive to the selection of multiple charging methods and charging convenience. The card reader is used to swipe the card to start charging, and it also has the function of radio frequency card swiping and deducting fees for the charging pile. The card verification is performed according to the encrypted ESAM. The card can be swiped and deducted normally only after the verification is correct.

[0041] As a preferred solution, Figure 1As shown, a DC energy meter 6 and a plurality of relays 17 are also provided in the middle of the front of the cabinet. A DC energy meter is an instrument specially used to measure the energy consumption and output in a DC circuit, and can measure the voltage, current, power, forward and reverse energy in a DC system. A relay (English name: relay) is an electrical control device. When the change of the input quantity (excitation quantity) reaches the specified requirements, it can cause a predetermined step change in the controlled quantity in the electrical output circuit, and plays the role of automatic regulation, safety protection, and conversion circuit in the circuit. The charging stack measures the electric energy through the DC energy meter 6 and performs automatic control through a plurality of relays 17.

[0042] As a preferred solution, Figure 1 As shown, the top of the cabinet is also equipped with an independent top cover 12; the bottom of the cabinet is equipped with an independent base 25, the height of the base 25 is suitable for facilitating the AC line and preventing rain from entering the cabinet; the cabinet is sprayed with different colors according to different customer needs. In addition, Figure 1 As shown, the cabinet further includes a cabinet body 24 for fixing and supporting the entire cabinet.

[0043] As a preferred solution, Figure 1 As shown, waterproof shutters (not shown) and dust filters 2 are installed on the left cabinet door 1 and the right cabinet door 14. The waterproof shutters and dust filters 2 realize the waterproof and dustproof functions of the charging stack. In addition, charging stack system fans 15 are installed on the left cabinet door and the right cabinet door to dissipate heat from the charging module and improve product stability and reliability.

[0044] As a preferred solution, Figure 1 As shown, the front cabinet door is equipped with an LED light panel 4, a display screen 5 and an emergency stop switch 8. The LED light panel 4 can display lights of various colors as needed to indicate the charging gun, power supply and fault. When the charging pile is in a dangerous state, the emergency stop switch can be used to cut off the power supply and stop the equipment to protect the safety of people and equipment; users can operate the display screen according to their needs, and can customize parameters according to the power mode, amount mode, time mode, scheduled charging and other methods to perform automatic charging functions, and can also charge in automatic full mode.

[0045] like Figure 2As shown, the principle of power adjustment of the utility model (taking 4 charging guns as an example) is: when charging guns A, B and C are charging the vehicle, and charging gun D is idle, the D group charging module can be assigned to any one of charging guns A, B and C as needed. For example, the D group charging module can be assigned to charging gun A by adjusting the DC contactors KM13 and KM14 to be connected, or the D group charging module can be assigned to charging gun B by adjusting the DC contactors KM9 and KM10 to be connected, or the D group charging module can be assigned to charging gun C by adjusting the DC contactors KM7 and KM8 to be connected. When one or more other charging guns are idle, similar processing can be performed, which will not be repeated here. In addition, as shown in the figure, DC contactors KM3, KM4, KM5, KM6, KM11 and KM12 are also adjustable DC contactors.

[0046] like Figure 2 As shown in the figure, DC contactors KMA1, KMA2, KMB1, KMB2, KMC1, KMC2, KMD1 and KMD2 are all direct DC contactors used to connect a charging gun and a corresponding charging module. FUSE is a fuse, and shunts PJA, PJB, PJC and PJD are used to connect a charging gun and a corresponding charging module. As shown in the figure, charging gun A is directly connected to charging module A through direct DC contactors KMA1, KMA2 and shunt PJA.

[0047] The above is only a specific implementation of this specification, but the protection scope of this specification is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this specification, which should be included in the protection scope of this specification. Therefore, the protection scope of this specification should be based on the protection scope of the claims.

Claims

1. An integrated DC charging stack, characterized in that: include: Cabinets, multiple main control boards, multiple DC contactors, multiple charging modules and multiple charging guns; The plurality of DC contactors are installed at the front lower part of the cabinet and include a direct-flow DC contactor and a regulating DC contactor; The multiple groups of charging modules are arranged at the upper rear of the cabinet, and there are at least four groups; The plurality of charging guns are at least 4, one of the plurality of charging guns is connected to a corresponding group of the plurality of charging modules through the direct DC contactor, and is connected to a group of the other groups of charging modules through the regulating DC contactor, the plurality of charging guns, the plurality of charging modules and the direct DC contactors correspond one to one, and the regulating DC contactor is arranged between the output ends of any two groups of the plurality of charging modules; The multiple main control boards are arranged in the middle of the front of the cabinet and are connected to the multiple DC contactors, the multiple charging modules and the multiple charging guns; The multiple DC contactors, the multiple charging modules and the multiple charging guns form a charging circuit; the multiple main control boards can adjust the output power of the multiple charging guns based on the on-off regulation of the DC contactors.

2. The charging stack according to claim 1, characterized in that: A fuse and a shunt are also installed at the front lower position inside the cabinet, and one of the multiple charging guns is connected to a corresponding group of the multiple charging modules through the fuse and the shunt; the multiple DC contactors, the fuse and the shunt are connected using multiple copper busbars.

3. The charging stack according to claim 1, characterized in that: A molded case leakage protection switch and a lightning arrester are installed on the left side of the lower rear of the cabinet, and an AC contactor is installed on the right side of the lower rear of the cabinet. The molded case leakage protection switch is connected to the AC contactor with a copper busbar, and the AC contactor outputs to one group of the multiple charging modules after passing through the copper busbar.

4. The charging stack according to claim 2 or 3, characterized in that: There are four charging guns and two main control boards, which respectively control two of the charging guns. Five auxiliary power supplies are installed on the upper front inside the cabinet, among which four auxiliary power supplies respectively supply power to one of the charging guns and the other one supplies power to the charging stack system.

5. The charging stack according to claim 4, characterized in that: The multiple charging guns are respectively arranged in two on the left and right sides of the cabinet, and the cabinet has a front cabinet door, a left cabinet door and a right cabinet door. An independent gun hanging column is respectively arranged on the left and right sides of the cabinet, and a gun hanging seat is respectively arranged on the left and right sides of the middle front of the cabinet, and each of the two gun hanging columns and the two gun hanging seats is placed with one of the multiple charging guns.

6. The charging stack according to claim 5, characterized in that: Two charging gun waterproof connectors are respectively arranged on the left and right sides of the cabinet, the two gun hanging columns and the two gun hanging seats are configured with corresponding charging QR codes, and a card reader is arranged in the middle and upper part of the front cabinet door.

7. The charging stack according to claim 2 or 3, characterized in that: A DC electric energy meter and a plurality of relays are also arranged in the middle of the front of the cabinet.

8. The charging stack according to claim 2 or 3, characterized in that: The top of the cabinet is configured with a top cover, and the bottom of the cabinet is configured with a base.

9. The charging stack according to claim 5, characterized in that: Waterproof shutters and dustproof filters are installed on the left cabinet door and the right cabinet door.

10. The charging stack according to claim 5, characterized in that: An LED light panel, a display screen and an emergency stop switch are installed on the front cabinet door.

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