Double-gun charging circuit and double-gun charging pile

Abstract

The utility model provides a double-gun charging circuit and a double-gun charging pile, and the charging circuit comprises a first power supply branch circuit and a second power supply branch circuit, and the first power supply branch circuit and the second power supply branch circuit are each provided with a positive input line and a negative input line. Each of the first power supply branch and the second power supply branch comprises a first shunt element and a first direct current contactor which are arranged on a positive input line, and a second direct current contactor arranged on a negative input line; a first direct-current contactor and a second direct-current contactor of the first power supply branch are connected to a first charging gun corresponding to the first power supply branch, and a first direct-current contactor and a second direct-current contactor of the second power supply branch are connected to a second charging gun corresponding to the second power supply branch; the first power supply branch and the second power supply branch further comprise lightning protection modules which are connected in parallel between the positive input line and the negative input line, and the other ends of the lightning protection modules are grounded. The safety and stability of the charging pile can be improved, and the influence of thunder and lightning on devices in the charging pile is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of charging piles, and specifically relates to a dual-gun charging circuit and a dual-gun charging pile. Background Art

[0002] With the popularization of new energy vehicles, more and more people are choosing new energy vehicles. New energy vehicles use lithium batteries to replace traditional fuel to provide kinetic energy. However, new energy vehicles also have certain limitations. That is, you need to always pay attention to the remaining amount of electricity and find a suitable charging station for charging.

[0003] In order to reduce the overall structural cost and electrical cost of the charging pile, the existing charging terminals, whether single-gun or dual-gun, do not have lightning protection devices that can cope with extreme thunderstorms, which reduces the safety and stability of the charging terminals. In serious cases, it may cause equipment damage and cause personal injury. Therefore, how to improve the safety and stability of the charging terminal and avoid the impact of lightning on the internal components of the charging terminal is an urgent problem to be solved. Utility Model Content

[0004] The present application provides a dual-gun charging circuit and a dual-gun charging pile to solve the problem of how to improve the safety and stability of a charging terminal and avoid the impact of lightning on various components inside the charging terminal.

[0005] In order to solve the above technical problems, the present application provides a dual-gun charging circuit, including a first power supply branch and a second power supply branch, the first power supply branch and the second power supply branch are both provided with corresponding positive input lines and negative input lines, the first power supply branch and the second power supply branch both include a first shunt element and a first DC contactor provided on the positive input line, and a second DC contactor provided on the negative input line;

[0006] The first DC contactor and the second DC contactor of the first power supply branch are connected to the first charging gun corresponding to the first power supply branch, and the first DC contactor and the second DC contactor of the second power supply branch are connected to the second charging gun corresponding to the second power supply branch;

[0007] The first power supply branch and the second power supply branch further include a lightning protection module connected in parallel between the positive input line and the negative input line, and the other end of the lightning protection module is grounded.

[0008] As a further improvement of the present application, the lightning protection module includes a first circuit breaker element arranged between the positive input line and the negative input line, and a first lightning protection element connected to the first circuit breaker element, and the other end of the first lightning protection element is grounded.

[0009] As a further improvement of the present application, an ammeter element is further connected between the two first shunt elements, and the ammeter element is connected between the first DC contactor of the first power supply branch and the first charging gun, and between the second DC contactor of the first power supply branch and the first charging gun, so as to detect the current in the first power supply branch passing through the first DC contactor and the second DC contactor;

[0010] The electric meter element is also connected between the first DC contactor of the second power supply branch and the second charging gun, and between the second DC contactor of the second power supply branch and the second charging gun to detect the current in the second power supply branch passing through the first DC contactor and the second DC contactor.

[0011] As a further improvement of the present application, insulation detection elements are respectively provided on the first power supply branch and the second power supply branch, one end of the insulation detection element is connected to the positive input line of the corresponding power supply branch, and the other end of the insulation detection element is connected to the negative input terminal of the corresponding power supply branch.

[0012] As a further improvement of the present application, the dual-gun charging circuit further includes a rectifier cabinet connected to the first power supply branch and the second power supply branch;

[0013] The rectifier cabinet is used to convert the input alternating current into direct current, so as to supply power to the corresponding first charging gun and second charging gun through the first power supply branch and the second power supply branch.

[0014] As a further improvement of the present application, the output end of the rectifier cabinet is also provided with a maintenance socket and a switch power supply module, and the maintenance socket and the switch power supply module are connected to the output end of the rectifier cabinet through a leakage switch.

[0015] Based on the above dual-gun charging circuit, the present application also provides a dual-gun charging pile, the dual-gun charging pile comprising a cabinet with a cavity arranged inside;

[0016] The first charging gun and the second charging gun are arranged opposite to each other on two sides of the cabinet.

[0017] As a further improvement of the present application, a display screen is arranged on the top of the cabinet, and a main controller connected to the display screen is arranged inside the cabinet. The display screen is used to display the charging status of the first charging gun and the second charging gun and the costs incurred during the charging process.

[0018] As a further improvement of the present application, a card reader connected to the main controller is also provided inside the cabinet, a round box antenna matching the card reader is provided on the side wall of the cabinet, and a card reading area is provided on the top of the cabinet corresponding to the position of the card reader, so as to identify the information entering the card reading area through the card reader and the round box antenna.

[0019] As a further improvement of the present application, a first indicator light panel and a second indicator light panel are also provided on the top of the cabinet, and the first indicator light panel and the second indicator light panel are connected to the main controller to indicate the charging status of the first charging gun and the second charging gun.

[0020] Compared with the prior art, the dual-gun charging circuit and dual-gun charging pile provided in the embodiments of the present application supply power to the corresponding first charging gun and second charging gun through the first power supply branch and the second power supply branch, and a lightning protection module is also arranged between the positive input line and the negative input line of the first charging gun and the second charging gun. When extreme weather such as thunder occurs, the lightning will directly act on the lightning protection component and will not affect the main circuit of the charging circuit, thereby avoiding the influence of lightning on the service life of various components inside the charging pile, reducing the subsequent maintenance cost and replacement cost, and can effectively improve the safety, stability and reliability of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a dual-gun charging circuit provided in an embodiment of the present application;

[0023] Figure 2 It is a structural schematic diagram of a lightning protection component in a dual-gun charging circuit provided in an embodiment of the present application;

[0024] Figure 3 It is a front view of a dual-gun charging pile provided in an embodiment of the present application;

[0025] Figure 4 It is a left view of a dual-gun charging pile provided in an embodiment of the present application;

[0026] Figure 5 It is a structural schematic diagram of a dual-gun charging pile provided in an embodiment of the present application;

[0027] Figure 6It is a right view of the dual-gun charging pile provided in an embodiment of the present application;

[0028] Description of reference numerals:

[0029] 10-cabinet; 11-first charging gun; 12-second charging gun; 13-display screen; 14-main controller; 15-card reader; 16-round box antenna; 17-card reading area; 18-first indicator light board; 19-second indicator light board; 20-speaker; 21-light; 22-emergency stop button;

[0030] 23-electric meter element; 24-first switch power supply; 25-second switch power supply; 26-third switch power supply; 27-maintenance socket; 28-leakage switch; 29-first circuit breaker element; 30-first lightning protection element; 31-first shunt element; 32-first DC contactor; 33-second DC contactor; 34-4G module. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. All directional indications in the embodiments of the present application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0033] 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 embodiments of the present application; however, this is not the only form of implementing or using the specific embodiments of the present application. The implementation methods cover the features of multiple specific embodiments and the method steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0034] Please refer to Figure 1-Figure 6 , which can solve the problem of how to improve the safety and stability of the charging terminal and avoid the impact of lightning on various components inside the charging terminal. The embodiment of the present application provides a dual-gun charging circuit and a dual-gun charging pile.

[0035] Please refer to Figure 1, which is a structural schematic diagram of a dual-gun charging circuit provided in an embodiment of the present application, the dual-gun charging circuit includes a first power supply branch and a second power supply branch, wherein the first power supply branch and the second power supply branch are both provided with corresponding positive input lines and negative input lines, and it can be observed that the first power supply branch and the second power supply branch both include a first shunt element and a first DC contactor arranged on the positive input line, and a second DC contactor arranged on the negative input line.

[0036] Furthermore, the first DC contactor and the second DC contactor of the first power supply branch are connected to the first charging gun corresponding to the first power supply branch, and the first DC contactor and the second DC contactor of the second power supply branch are connected to the second charging gun corresponding to the second power supply branch;

[0037] Specifically, the first power supply branch and the second power supply branch are used for illustration. Figure 2 , which is a structural schematic diagram of the lightning protection component in the dual-gun charging circuit provided in an embodiment of the present application. The above-mentioned first power supply branch includes a first shunt element FL1 and a first DC contactor KMA1 arranged on the positive input line, and the negative input line of the first power supply branch is provided with a second DC contactor KMA2. It can be observed that the first shunt element FL1 and the first DC contactor KMA1 of the first power supply branch and the second DC contactor KMA2 of the negative input line of the first power supply branch are connected to the first charging gun corresponding to the first power supply branch.

[0038] The second power supply branch includes a first shunt element FL2 and a first DC contactor KMB1 arranged on the positive input line, and the negative input line of the second power supply branch is provided with a second DC contactor KMB2. It can be observed that the first shunt element FL2 and the first DC contactor KMB1 of the positive input line of the second power supply branch, and the second DC contactor KMB2 of the negative input line of the second power supply branch are connected to the second charging gun corresponding to the second power supply branch.

[0039] As an optional implementation, the first power supply branch and the second power supply branch further include a lightning protection module arranged in parallel between the positive input line and the negative input line, and the other end of the lightning protection module is grounded; if extreme weather occurs, the lightning strike will directly act on the lightning protection module without affecting the main circuit.

[0040] Please refer to further Figure 2 It can be observed that the lightning protection module includes a first circuit breaker element arranged between the positive input line and the negative input line, and a first lightning protection element connected to the first circuit breaker element, and the other end of the first lightning protection element is grounded.

[0041] Specifically, the first power supply branch and the second power supply branch are both provided with corresponding lightning protection modules. The lightning protection module arranged in the first power supply branch includes a first circuit breaking element QFO2 and a first lightning protection element SPD1. The first circuit breaking element QFO2 is arranged in parallel between the positive input line and the negative input line of the first power supply branch. One end of the first lightning protection element SPD1 is connected to the first circuit breaking element QFO2, and the other end of the first lightning protection element SPD1 is grounded.

[0042] Furthermore, the lightning protection module arranged in the second power supply branch includes a first circuit breaking element QFO3 and a first lightning protection element SPD2. The first circuit breaking element QFO3 is arranged in parallel between the positive input line and the negative input line of the second power supply branch. The first lightning protection element SPD2 and the first circuit breaking element QFO3, and the other end of the first lightning protection element SPD2 is grounded.

[0043] In this way, by respectively arranging the corresponding first circuit breaker element and the first lightning protection element on the first power supply branch and the second power supply branch, when there is thunder, the lightning strike will directly act on the first lightning protection element without affecting the main circuit.

[0044] As an optional embodiment, the present application is also provided with a meter element PJAB for monitoring the charging current of the first charging gun and the second charging gun. The meter element PJAB is arranged between the two first shunt elements FL1 and FL2. The meter element PJAB is connected between the first DC contactor KMA1 of the first power supply branch and the first charging gun, and between the second DC contactor KMA2 of the first power supply branch and the first charging gun to detect the current in the first power supply branch passing through the first DC contactor KMA1 and the second DC contactor KMA1, that is, to detect the current entering the first charging gun.

[0045] The meter element PJAB is also connected between the first DC contactor KMB1 and the second charging gun of the second power supply branch, and between the second DC contactor KMB2 and the second charging gun of the second power supply branch, to detect the current in the second power supply branch passing through the first DC contactor KMB1 and the second DC contactor KMB2, that is, to detect the current entering the second charging gun.

[0046] The present application realizes the monitoring of the current used by the first charging gun and the second charging gun by setting up an electric meter element PJAB, so as to calculate the cost generated by each charging pile during the charging process according to the current diversion, and the first charging gun and the second charging gun are diverted through a dual-channel method for billing without interfering with each other to avoid errors.

[0047] As an optional implementation, the present application further provides an insulation detection element CCU on the first power supply branch and the second power supply branch, respectively, one end of the insulation detection element CCU is connected to the positive input line of the corresponding power supply branch, and the other end of the insulation detection element CCU is connected to the negative input terminal of the corresponding power supply branch.

[0048] Specifically, corresponding insulation detection elements CCU are provided on the first power supply branch and the second power supply branch. Taking the insulation detection element CCU provided on the first power supply branch as an example, one end of the insulation detection element CCU is connected to the positive input line of the first power supply branch, and the other end of the insulation detection element CCU is connected to the negative input end of the first power supply branch.

[0049] Taking the insulation detection element CCU provided on the second power supply branch as an example, one end of the insulation detection element CCU is connected to the positive input line of the second power supply branch, and the other end of the insulation detection element CCU is connected to the negative input end of the second power supply branch.

[0050] The present application also provides a rectifier cabinet for converting the input AC power into DC power. The output ends of the rectifier cabinet are respectively connected to the corresponding first power supply branch and the second power supply branch. After the input AC power is converted into DC power by the rectifier cabinet, the DC power is respectively supplied to the first charging gun through the first power supply branch, and to the second charging gun through the second power supply branch.

[0051] As an optional implementation, the output end of the rectifier cabinet is also provided with a maintenance socket CZ1 and a switching power supply module, and the maintenance socket CZ1 and the switching power supply module are connected to the output end of the rectifier cabinet through a leakage switch QFO1; it can be observed that the switching power supply module includes a first switching power supply PSU2, a second switching power supply PSU1 and a third switching power supply PSU3, which serve as auxiliary power supplies for the first charging gun and the second charging gun, and as an auxiliary power supply for the meter element PJAB and the charging control board.

[0052] Exemplarily, the first shunt element can be set as a shunt, the first circuit breaking element can be set as a miniature circuit breaker, the first lightning protection element can be set as a lightning arrester, and the leakage switch can be set as a miniature leakage switch. The present application does not impose further restrictions on the specific setting forms of the above elements, and the above are all exemplary optional implementation methods.

[0053] Based on the above-mentioned dual-gun charging circuit, the present application also provides a dual-gun charging pile, which includes the above-mentioned dual-gun charging circuit and a cabinet 10 with a cavity arranged inside.

[0054] Please refer to Figure 3, which is a front view of the dual-gun charging pile provided in an embodiment of the present application. It can be observed that a first charging gun 11 and a second charging gun 12 for charging are correspondingly arranged on both sides of the cabinet 10, a display screen 13 is arranged on the top of the cabinet 10, and a main controller 14 connected to the display screen 13 is arranged inside the cabinet 10. The present application obtains the current data of the meter element 23 through the main controller 14, and generates the costs generated by the first charging gun 11 and the second charging gun 12 during the charging process in real time according to the current data. The display screen 13 is used to display the charging status of the first charging gun 11 and the second charging gun 12 and the costs generated during the charging process.

[0055] As an optional implementation, please refer to Figure 6 , which is a right view of the dual-gun charging pile provided in an embodiment of the present application. In the present application, a card reader 15 connected to the main controller 14 is further arranged inside the cabinet 10, a round box antenna 16 cooperating with the card reader 15 is arranged on the side wall of the cabinet 10, and a card reading area 17 is arranged at the top of the cabinet 10 at a position corresponding to the card reader 15, so as to identify the information entering the card reading area 17 through the card reader 15 and the round box antenna 16.

[0056] Furthermore, the present application also provides a first indicator light panel 18 and a second indicator light panel 19 on the top of the cabinet 10, and the first indicator light panel 18 and the second indicator light panel 19 are also connected to the main controller 14 to indicate the charging status of the first charging gun 11 and the second charging gun 12; such as indicating whether the current moment is in a charging state by turning on and off the light panel, and the present application will not elaborate on this.

[0057] Please continue to refer to Figure 6 A 4G module 34 is also provided inside the cabinet 10 to realize communication with an external intelligent terminal. At the same time, a lighting lamp 21 is provided to illuminate the inside of the cabinet 10, so as to facilitate the staff to repair and debug the various lines or devices inside the cabinet 10.

[0058] For further information, please refer to Figure 4 , which is a left view of a dual-gun charging pile provided in an embodiment of the present application. A speaker 20 is also provided inside the cabinet 10 in the present application to facilitate sound prompts to the user. Please refer to Figure 5, which is a structural schematic diagram of the dual-gun charging pile provided in an embodiment of the present application. After opening the door of the cabinet 10, it can be observed that the present application also provides a first switching power supply 24, a second switching power supply 25, a third switching power supply 26, a maintenance socket 27, a leakage switch 28, a first circuit breaker element 29, a first lightning protection element 30, a first shunt element 31, a first DC contactor 32 and a second DC contactor 33 inside the cabinet 10. As for the specific setting quantity and wiring method of the above-mentioned components, please refer to the specific connection method of each component in the above-mentioned dual-gun charging circuit, and refer to the description of the dual-gun charging circuit provided in the above-mentioned application embodiment, which will not be repeated here.

[0059] The dual-gun charging circuit and dual-gun charging pile provided in the embodiments of the present application supply power to the corresponding first charging gun and second charging gun through the first power supply branch and the second power supply branch. A lightning protection module is also provided between the positive input line and the negative input line of the first charging gun and the second charging gun. When extreme weather such as thunder occurs, the lightning will directly act on the lightning protection component and will not affect the main circuit of the charging circuit, thereby avoiding the influence of lightning on the service life of various components inside the charging pile, reducing the subsequent maintenance cost and replacement cost, and can effectively improve the safety, stability and reliability of the charging pile.

[0060] It can be understood that the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments are merely exemplary embodiments used to illustrate the principles of the present application, but the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of the present application, and these modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A dual-gun charging circuit, characterized in that: The invention comprises a first power supply branch and a second power supply branch, wherein the first power supply branch and the second power supply branch are both provided with corresponding positive input lines and negative input lines, and the first power supply branch and the second power supply branch both comprise a first shunt element and a first DC contactor provided on the positive input line, and a second DC contactor provided on the negative input line; The first DC contactor and the second DC contactor of the first power supply branch are connected to the first charging gun corresponding to the first power supply branch, and the first DC contactor and the second DC contactor of the second power supply branch are connected to the second charging gun corresponding to the second power supply branch; The first power supply branch and the second power supply branch further include a lightning protection module connected in parallel between the positive input line and the negative input line, and the other end of the lightning protection module is grounded.

2. The double-gun charging circuit according to claim 1, characterized in that: The lightning protection module includes a first circuit breaker element disposed between the positive input line and the negative input line, and a first lightning protection element connected to the first circuit breaker element, wherein the other end of the first lightning protection element is grounded.

3. The double-gun charging circuit according to claim 1, characterized in that: An ammeter element is also connected between the two first shunt elements, and the ammeter element is connected between the first DC contactor of the first power supply branch and the first charging gun, and between the second DC contactor of the first power supply branch and the first charging gun, so as to detect the current in the first power supply branch passing through the first DC contactor and the second DC contactor; The electric meter element is also connected between the first DC contactor of the second power supply branch and the second charging gun, and between the second DC contactor of the second power supply branch and the second charging gun to detect the current in the second power supply branch passing through the first DC contactor and the second DC contactor.

4. The double-gun charging circuit according to claim 1, characterized in that: The first power supply branch and the second power supply branch are also respectively provided with an insulation detection element, one end of the insulation detection element is connected to the positive input line of the corresponding power supply branch, and the other end of the insulation detection element is connected to the negative input end of the corresponding power supply branch.

5. The double-gun charging circuit according to claim 1, characterized in that: The dual-gun charging circuit also includes a rectifier cabinet connected to the first power supply branch and the second power supply branch; The rectifier cabinet is used to convert the input alternating current into direct current, so as to supply power to the corresponding first charging gun and second charging gun through the first power supply branch and the second power supply branch.

6. The double-gun charging circuit as claimed in claim 5, characterized in that: The output end of the rectifier cabinet is also provided with a maintenance socket and a switch power module, and the maintenance socket and the switch power module are connected to the output end of the rectifier cabinet through a leakage switch.

7. A dual-gun charging pile, characterized in that: It comprises a dual-gun charging circuit as described in any one of claims 1 to 6, and a cabinet with a cavity arranged inside; The first charging gun and the second charging gun are arranged opposite to each other on two sides of the cabinet.

8. The dual-gun charging pile according to claim 7, characterized in that: A display screen is arranged on the top of the cabinet, and a main controller connected to the display screen is arranged inside the cabinet. The display screen is used to display the charging status of the first charging gun and the second charging gun and the fees generated during the charging process.

9. The dual-gun charging pile according to claim 8, characterized in that: A card reader connected to the main controller is also provided inside the cabinet, a round box antenna matching the card reader is provided on the side wall of the cabinet, and a card reading area is provided on the top of the cabinet at a position corresponding to the card reader, so that information entering the card reading area can be identified through the card reader and the round box antenna.

10. The dual-gun charging pile according to claim 8, characterized in that: A first indicator light panel and a second indicator light panel are also provided on the top of the cabinet. The first indicator light panel and the second indicator light panel are connected to the main controller to indicate the charging status of the first charging gun and the second charging gun.

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