Header box and inverter system

Abstract

The utility model provides a combiner box and an inverter system. The fusing device is arranged on the box body arm of the box body, and the fusing device is connected with the box body wall from the outside of the box body, so that the fusing device can be replaced outside the box body; in addition, the output end of the convergence device is connected with the output end of the convergence box through the switch device, and the opening and closing mechanism in the switch device is located outside the box body, so that the connection between the output end of the convergence device and the output end of the convergence box can be cut off or connected outside the box body. Furthermore, the wireless communication device is connected with the communication end of the controller in the convergence device, so that the terminal equipment outside the box body can realize the purposes of setting a distributed physical address, upgrading software and the like by establishing communication connection with the wireless communication device; in conclusion, the three operations can be completed outside the box body, so that the combiner box reduces the possibility that the protection property of the box body becomes poor due to human reasons.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a combiner box and an inverter system. Background Art

[0002] During the construction of a photovoltaic power station, workers will open the door of the combiner box and enter the combiner box to perform operations for reasons such as connecting component inputs, connecting switch output cables, or setting assigned physical addresses.

[0003] However, it often happens that the staff fails to close the door of the combiner box tightly or forgets to close the door of the combiner box, which causes the protection of the combiner box to deteriorate and may even cause water to enter the combiner box, which in turn causes the entire combiner box to arc or even burn.

[0004] Therefore, how to reduce the possibility that the protective performance of the combiner box body deteriorates due to human factors is a technical problem that needs to be solved urgently. Utility Model Content

[0005] In view of this, the utility model provides a combiner box and an inverter system to reduce the possibility that the protection of the combiner box body deteriorates due to human factors.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] On one hand, the present application provides a combiner box, comprising: a box body, a combiner device, a wireless communication device, a switch device, a controller and at least two fuse devices; wherein:

[0008] The confluence device is arranged inside the box;

[0009] One end of the fuse device is connected to the input end of the converging device;

[0010] The other end of the fuse device is connected to the input end of the combiner box;

[0011] The fuse device is arranged on the box wall of the box, and the connection method of the fuse device is to connect the fuse device to the box wall from the outside of the box;

[0012] The output end of the combiner device is connected to the first end of the switch device, and the second end of the switch device is connected to the output end of the combiner box;

[0013] The opening and closing mechanism in the switch device is located outside the box;

[0014] The wireless communication device is connected to the communication terminal of the controller.

[0015] Optionally, the fuse device comprises: a fuse and a first connector; wherein:

[0016] The first side of the fuse is connected to the corresponding input end of the merging device;

[0017] The second side of the fuse is connected to the corresponding input end of the combiner box through the first connector.

[0018] Optionally, the fuse device further includes: a second connector; wherein:

[0019] The first side of the fuse is connected to the corresponding input end of the merging device through the second connector.

[0020] Optionally, the fuse device further includes: a first current sampling device, and / or a second current sampling device; wherein:

[0021] The signal output end of the first current sampling device is connected to the controller, and the first current sampling device is used to sample the current of the first end of the first side of the fuse;

[0022] The signal output end of the second current sampling device is connected to the controller, and the second current sampling device is used to sample the current at the second end of the first side of the fuse.

[0023] Optionally, the current sampling device includes: a Hall sensor, a shunt or a patch current sensor.

[0024] Optionally, the fuse device further includes: a first anti-reverse diode branch, and / or a second anti-reverse diode branch; wherein:

[0025] The first end of the first side of the fuse is connected to the anode of the first anti-reverse diode branch, and the cathode of the first anti-reverse diode branch is connected to the positive electrode of the corresponding input end of the merging device;

[0026] The second end of the first side of the fuse is connected to the cathode of the second anti-reverse diode branch, and the anode of the second anti-reverse diode branch is connected to the negative electrode of the corresponding input end of the merging device.

[0027] Optionally, the box body comprises: a box cover and a box body with a bottom; wherein:

[0028] The box cover is arranged on the top of the box body in a static connection manner;

[0029] The box body is formed in one piece.

[0030] Optionally, the box body comprises: a box cover, a box bottom and a box body; wherein:

[0031] The box cover is arranged on the top of the box body in a static connection manner;

[0032] The box bottom is arranged at the bottom of the box body in a static connection manner;

[0033] The box body is formed by splicing multiple parts, and the connection methods adopted for splicing include: static connection;

[0034] or,

[0035] The box body is formed in one piece.

[0036] Optionally, the switch device comprises: a switch, a transmission mechanism and an opening and closing mechanism; wherein:

[0037] The moving contact of the switch is connected to the opening and closing mechanism through the transmission mechanism.

[0038] Optionally, it also includes: an output junction box; wherein:

[0039] The second end of the switch device is connected to the output end of the combiner box through the output junction box;

[0040] The output junction box is located outside the box, and the output junction box is arranged on the wall of the box.

[0041] Optionally, the communication mode of the wireless communication device includes: WIFI, and / or Bluetooth.

[0042] Optionally, it also includes: a lightning protection module; wherein:

[0043] The two connection ends of the lightning protection module are respectively connected to the two poles of the output end of the converging device;

[0044] The signal output ends of the lightning protection modules are all connected to the controller.

[0045] Another aspect of the present application provides an inverter system, comprising: an inverter and at least one combiner box as described in any one of the previous aspects of the present application; wherein:

[0046] The output end of each combiner box is connected to the DC side of the inverter;

[0047] The AC side of the inverter serves as the AC side of the inverter system.

[0048] Optionally, the controller in each of the combiner boxes is communicatively connected with the controller in the inverter.

[0049] It can be seen from the above technical scheme that the utility model provides a junction box. In the junction box, since the fuse device is arranged on the box arm of the box, and the connection method of the fuse device is to connect the fuse device to the box wall from the outside of the box, the fuse device can be replaced outside the box; in addition, since the output end of the junction device is connected to the output end of the junction box through the switch device, and the opening and closing mechanism in the switch device is located outside the box, the connection between the output end of the junction device and the output end of the junction box can be cut off or connected outside the box; furthermore, since the wireless communication device is connected to the communication end of the controller in the junction device, the terminal device outside the box can access the controller after establishing a communication connection with the wireless communication device, so that the purpose of setting the assigned physical address, viewing and downloading the operation log, and upgrading the software can be achieved outside the box; in summary, the above three operations can be completed outside the box without opening the door of the junction box, so the junction box reduces the possibility that the protection of its own box body deteriorates due to human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the utility model 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0051] Figure 1-Figure 3 They are schematic structural diagrams of three implementation modes of the combiner box provided in the present application;

[0052] Figure 4-Figure 9 The schematic diagrams of the structures of six implementation modes of the fuse device 50 provided in the present application are shown respectively;

[0053] Fig.10 and Fig.11 They are structural schematic diagrams of two other implementation modes of the combiner box provided in the present application;

[0054] Fig.12 A schematic structural diagram of an implementation scheme of a box provided in this application;

[0055] Fig.13 A schematic diagram of the structure of the inverter system provided in this application. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] In this application, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0058] In order to reduce the possibility that the protection of the box body 10 of the combiner box is deteriorated due to human factors, the embodiment of the present application provides a combiner box, and its specific structure is as follows Figure 1 , Figure 2 and Figure 3 As shown, it specifically includes: a box 10, a confluence device 20, a wireless communication device 30, a switch device 40, a controller 60 and at least two fuse devices 50; the connection relationship and position relationship between the various components are specifically described as follows:

[0059] The confluence device 20 is disposed inside the box 10; wherein, the confluence device 20 refers to a device that can perform the confluence function; in addition, the confluence device 20 can be disposed at any position inside the box 10, which is not specifically limited here and can be determined according to the specific circumstances, all within the protection scope of this application.

[0060] It should be noted that the confluence device 20 is already very mature in the prior art and will not be described in detail here.

[0061] The merging device 20 is provided with at least two input ends, and one end of the fuse device 50 is connected to the input end of the merging device 20; the merging box is provided with at least two input ends, and the other end of the fuse device 50 is connected to the input end of the merging box.

[0062] The fuse device 50 is disposed on the box arm of the box 10 ; wherein the connection method of the fuse device 50 is a method of connecting the fuse device 50 to the box wall from the outside of the box 10 .

[0063] Optionally, the connection method of the fuse device 50 can be a threaded connection. In practical applications, this includes but is not limited to this. It is not specifically limited here and can be determined according to specific circumstances. It is all within the protection scope of this application.

[0064] In a specific example, if Figure 1 As shown, a portion of the fuse device 50 is located outside the box 10, and another portion of the fuse device 50 is located inside the box 10; in another specific example, as shown in FIG. Figure 2 As shown, the fuse device 50 is entirely located outside the box 10; in another example, as shown in FIG. Figure 3 As shown, the fuse device 50 is entirely located inside the box 10 .

[0065] Since the fuse device 50 is located outside the box 10, the heat dissipation problem of the combiner box can be alleviated, and the fuse device 50 is located inside the box 10 to improve the protection level of the fuse device 50, in practical applications, the positional relationship between the fuse device 50 and the box 10 shown in the first example above is a preferred implementation method so as to take into account both heat dissipation and protection level.

[0066] The above three examples show three positional relationships between the fuse device 50 and the box body 10, which are not specifically limited here and can be determined according to specific circumstances, and are all within the scope of protection of this application.

[0067] The output end of the combiner device 20 is connected to the first end of the switch device 40, and the second end of the switch device 40 is connected to the output end of the combiner box; Figure 1 , Figure 2 and Figure 3 As shown, the opening and closing mechanism 41 in the switch device 40 is located outside the box 10 .

[0068] Among them, the opening and closing mechanism 41 in the switch device 40 refers to: a mechanism through which the staff can open or close the switch 43 in the switch device 40. In other words, the connection between the output end of the junction device 20 and the output end of the junction box can be cut off or connected through the opening and closing mechanism 41. For example, the opening and closing mechanism is a handle, that is, turning it downward by a certain angle to open the switch 43 in the switch device 40, and turning it upward by a certain angle to close the switch 43 in the switch device 40.

[0069] In a specific example, if Figure 1 , Figure 2 and Figure 3 As shown, the switch device 40 includes: a switch 43, a transmission mechanism 42 and an opening and closing mechanism. The moving contact of the switch 43 is connected to the opening and closing mechanism through the transmission mechanism 42.

[0070] It should be noted that the connection relationship between the switch 43, the transmission mechanism 42 and the opening and closing mechanism is already very mature in the prior art and will not be described in detail here.

[0071] The above example only shows one implementation of the switch device 40. In practical applications, including but not limited to this, no specific limitation is made here and it may be determined according to the specific circumstances, all of which are within the scope of protection of this application.

[0072] In a specific example, if Figure 1 , Figure 2 and Figure 3 As shown, the switch 43 and the transmission mechanism 42 are both located inside the box 10, which can improve the protection level of the confluence device 20 and thus reduce the possibility of safety accidents.

[0073] The above example only shows a positional relationship between other components in the confluence device 20 except the opening and closing mechanism 41 and the box body 10. In practical applications, including but not limited to this, no specific limitation is made here and it can be determined according to the specific situation and is within the scope of protection of this application.

[0074] Optionally, the switch 43 in the switch device 40 can be a relay or a load switch. In practical applications, this includes but is not limited to these. No specific limitation is made here and it can be determined according to specific circumstances. All of them are within the protection scope of this application.

[0075] It should be noted that, in practical applications, the switch device 40 is required to meet the IP65 protection level to improve the reliability of the switch device 40 .

[0076] Optionally, the switch device 40 can be arranged on the box body 10. In practical applications, including but not limited to this, no specific limitation is made here, and it can be determined according to specific circumstances, all of which are within the protection scope of this application.

[0077] Optionally, the connection method of the switch device 40 can be a method of connecting the switch device 40 to the box body 10 from the outside of the box body 10, or a method of connecting the switch device 40 to the box body 10 from the outside of the box body 10. No specific limitation is made here, and it can be determined according to the specific situation, and both are within the protection scope of this application.

[0078] Optionally, the switch device 40 may be fixed in a threaded manner. In practical applications, this includes but is not limited to this, which is not specifically limited here and may be determined according to specific circumstances, all of which are within the scope of protection of this application.

[0079] The signal input terminal of the controller 60 is connected to the switch device 40 for obtaining an opening and closing signal to obtain the state of the opening and closing mechanism 41 , that is, to obtain the opening and closing state of the switch 43 .

[0080] The wireless communication device 30 is connected to the communication end of the controller 60; wherein the wireless communication device 30 can establish a communication connection with a terminal device outside the box 10, and can also establish a communication connection with a controller 60 in other devices outside the box 10, such as an inverter connected to the output end of the junction box.

[0081] Optionally, the communication mode of the wireless communication device can be WIFI, or Bluetooth, or even both of them. In practical applications, this includes but is not limited to this. No specific limitation is made here and it may be determined according to the specific circumstances. All of them are within the scope of protection of this application.

[0082] Optionally, the terminal device can be a mobile phone or a computer. In practical applications, this includes but is not limited to these. No specific limitation is made here and it can be determined based on the specific circumstances. All of these are within the scope of protection of this application.

[0083] In a specific example, if Figure 1 or Figure 2 As shown, the wireless communication device 30 is located inside the box 10; in another specific example, as shown in FIG. Figure 3 As shown, the wireless communication device 30 is located outside the box 10 .

[0084] The above two examples show two implementations of the positional relationship between the wireless communication device 30 and the box 10. In practical applications, including but not limited to these, no specific limitation is made here and it can be determined according to the actual situation.

[0085] Optionally, the wireless communication device 30 can be disposed on the box 10. In practical applications, this includes but is not limited to this. No specific limitation is made here and it can be determined according to specific circumstances. All of these are within the protection scope of this application.

[0086] It should be noted that the wireless communication device 30 is already very mature in the prior art and will not be described in detail herein.

[0087] In the combiner box, since the fuse device 50 is arranged on the box wall of the box body 10, and the connection method of the fuse device 50 is to connect the fuse device 50 to the box wall from the outside of the box body 10, the fuse device 50 can be replaced outside the box body 10; in addition, since the output end of the combiner device 20 is connected to the output end of the combiner box through the switch device 40, and the opening and closing mechanism 41 in the switch device 40 is located outside the box body 10, the output end of the combiner device 20 and the combiner box can be cut off or connected outside the box body 10. furthermore, since the wireless communication device 30 is connected to the communication end of the controller 60, the terminal equipment outside the box can access the controller 60 after establishing a communication connection with the wireless communication device 30, so that outside the box 10, the purposes of setting the assigned physical address, viewing and downloading the operation log, and upgrading the software can be achieved; in summary, the above three operations can be completed outside the box 10 without opening the door of the combiner box, so the combiner box reduces the possibility that the protection of its own box 10 will deteriorate due to human factors.

[0088] In addition, since the switch device 40 is located outside the box 10, the size of the box 10 can be reduced, thereby reducing the overall cost of the combiner box.

[0089] Another embodiment of the present application provides an implementation of a fuse device 50, and its specific structure can be found in Figure 4 ( Figure 4 Only two fuses are used as an example to illustrate the fuse 51), which specifically includes: a fuse 51 and a first connector 52; the connection relationship between the components is specifically as follows:

[0090] The first side of the fuse 51 is connected to the corresponding input end of the combiner device 20, and the second side of the fuse 51 is connected to the corresponding input end of the combiner box through the first connector 52.

[0091] Optionally, the first connector 52 may be a plug-in connector or a magnetic connector. In practical applications, this includes but is not limited to these. No specific limitation is made here and it may be determined according to specific circumstances. All are within the scope of protection of this application.

[0092] For example, the first connector 52 is a plug-in connector; the two ends of the second side of the fuse 51 are respectively connected to the two male terminals 521 in the first connector 52, such as Figure 4 (To simplify the view, Figure 4 Only the male terminal 521 in the first connector 52 is shown, or, the two ends of the second side of the fuse 51 are respectively connected to the two female terminals in the first connector 52.

[0093] This embodiment also provides another implementation of the fuse device 50, and its specific structure can be found in Figure 5 ( Figure 5 Only in Figure 4 Based on the above embodiment, this embodiment further includes: a second connector 53.

[0094] The first side of the fuse 51 is connected to the corresponding input terminal of the merging device 20 through the second connector 53 .

[0095] Optionally, the second connector 53 may be a plug-in connector or a magnetic connector. In practical applications, this includes but is not limited to these. No specific limitation is made here and it may be determined according to specific circumstances. All are within the scope of protection of this application.

[0096] For example, the second connector 53 is a plug-in connector, and the two ends of the first side of the fuse 51 are respectively connected to the two male terminals 531 in the second connector 53. Figure 5 (To simplify the view, Figure 5 Only the male terminal 531 in the second connector 53 is shown, or, the two ends of the first side of the fuse 51 are respectively connected to the two female terminals in the second connector 53.

[0097] In a specific example, if Figure 4 or Figure 5 As shown, the fuse 51 includes two fuses, one end of the first fuse FUSE1 is connected to the first end of the first side of the fuse 51, the other end of the first fuse FUSE1 is connected to the first end of the second side of the fuse 51, one end of the second fuse FUSE2 is connected to the second end of the first side of the fuse 51, and the other end of the second fuse FUSE2 is connected to the second end of the second side of the fuse 51.

[0098] The above example only shows a specific implementation of the fuse 51. In practical applications, including but not limited to this, no specific limitation is made here and it can be determined according to the specific situation, all of which are within the scope of protection of this application.

[0099] This embodiment also provides another implementation of the fuse device 50. The specific structure of the fuse device 50 can be found in Figure 6-Figure 9 ( Figure 6-Figure 9 Only in Figure 4 The present invention is demonstrated on the basis of FIG. 6 . In order to simplify the view, the controller 60 is not shown in the figure. This embodiment, based on the above embodiment, further includes: a first current sampling device 54, and / or a first anti-reverse diode branch 55, and / or a second current sampling device 56, and / or a second anti-reverse diode branch 57; the connection relationship between the various devices is specifically described as follows:

[0100] The signal output end of the first current sampling device 54 is connected to the controller 60. The first current sampling device 54 is used to sample the current at the first end of the first side of the fuse 51. The controller 60 is used to process the sampling result of the first current sampling device 54 and monitor the actual operation of the current of the corresponding branch.

[0101] The signal output end of the second current sampling device 56 is connected to the controller 60. The second current sampling device 56 is used to sample the current at the second end of the first side of the fuse 51. The controller 60 is used to process the sampling result of the second current sampling device 56 and monitor the actual operation of the current of the corresponding branch.

[0102] Optionally, the current sampling device can be a Hall sensor, a shunt, or a patch current sensor. In practical applications, these include but are not limited to these. No specific limitations are made here and it can be determined according to specific circumstances. All are within the scope of protection of this application.

[0103] For example, Figure 6 or Figure 8 As shown, the first current sampling device 54 is a shunt, the first end of the first side of the fuse 51 is connected to the input end of the first current sampling device 54, and the output end of the first current sampling device 54 is directly or indirectly connected to the positive pole of the corresponding input end of the converging device 20.

[0104] For example, Figure 7 or Fig. 9 As shown, the second current sampling device 56 is a shunt, the second end of the first side of the fuse 51 is connected to the input end of the second current sampling device 56, and the output end of the second current sampling device 56 is directly or indirectly connected to the negative pole of the corresponding input end of the converging device 20.

[0105] It should be noted that Hall sensors, shunts, and patch current sensors are all very mature in the prior art. Here, only the shunt is taken as an example to explain in detail how it samples current, and no further explanation is given.

[0106] The first end of the first side of the fuse 51 is connected to the anode of the first anti-reverse diode branch 55 , and the cathode of the first anti-reverse diode branch 55 is connected to the positive electrode of the corresponding input terminal of the merging device 20 .

[0107] Among them, the first anti-reverse diode branch 55 includes at least one anti-reverse diode branch. If the number of anti-reverse diodes is greater than 1, all anti-reverse diodes are connected in series in the same direction, and the anode of the series branch formed is used as the anode of the first anti-reverse diode branch 55, and the cathode of the anti-reverse diode branch formed is used as the cathode of the first anti-reverse diode branch 55; if the number of anti-reverse diodes is equal to 1, the anode of the anti-reverse diode is used as the anode of the first anti-reverse diode branch 55, and the cathode of the anti-reverse diode is used as the cathode of the first anti-reverse diode branch 55. For example, Figure 8 or Fig.11 Z1 in.

[0108] For example, Figure 6 or Figure 7 As shown, the first end of the first side of the fuse 51 is directly or indirectly connected to the anode of the first anti-reverse diode branch 55 , and the cathode of the first anti-reverse diode branch 55 is connected to the positive electrode of the corresponding input terminal of the merging device 20 .

[0109] The second end of the first side of the fuse 51 is connected to the cathode of the second anti-reverse diode branch 57 , and the anode of the second anti-reverse diode branch 57 is connected to the negative electrode of the corresponding input terminal of the merging device 20 .

[0110] Among them, the second anti-reverse diode branch 57 includes at least one anti-reverse diode branch. If the number of anti-reverse diodes is greater than 1, all anti-reverse diodes are connected in series in the same direction, and the anode of the series branch formed is used as the anode of the second anti-reverse diode branch 57, and the cathode of the anti-reverse diode branch formed is used as the cathode of the second anti-reverse diode branch 57; if the number of anti-reverse diodes is equal to 1, the anode of the anti-reverse diode is used as the anode of the second anti-reverse diode branch 57, and the cathode of the anti-reverse diode is used as the cathode of the second anti-reverse diode branch 57. For example, Fig. 9 or Fig.10 Z2 in.

[0111] For example, Figure 8 or Fig. 9 As shown, the second end of the first side of the fuse 51 is directly or indirectly connected to the cathode of the second anti-reverse diode branch 57 , and the anode of the second anti-reverse diode branch 57 is connected to the negative electrode of the corresponding input terminal of the merging device 20 .

[0112] In a specific example, the first current sampling device 54, the first anti-reverse diode branch 55, the second current sampling device 56, the second anti-reverse diode branch 57, and the fuse 51 are integrated into one; in another specific example, the first current sampling device 54, the first anti-reverse diode branch 55, the second current sampling device 56, the second anti-reverse diode branch 57, and the fuse 51 are independently arranged respectively; in another specific example, among the first current sampling device 54, the first anti-reverse diode branch 55, the second current sampling device 56, the second anti-reverse diode branch 57, and the fuse 51, at least two are integrated into one.

[0113] Since the volume of the box body 10 can be reduced to a certain extent after integration, that is, the overall cost of the combiner box can be reduced, in practical applications, the solution shown in the first example above is a preferred implementation.

[0114] The above two examples show three configuration methods between the components in the fuse device, which are not specifically limited here and can be determined according to specific circumstances, all of which are within the scope of protection of this application.

[0115] The above are only three implementations of the fuse device 50. In practical applications, including but not limited to these, no specific limitations are made here, and it can be determined according to specific circumstances, all of which are within the protection scope of this application.

[0116] Another embodiment of the present application provides another implementation of the combiner box. The specific structure can be found in Fig.10 ( Fig.10 Only in Figure 1 This embodiment is based on the above embodiment and further includes: an output junction box 70.

[0117] The second end of the switch device 40 is connected to the output end of the combiner box through an output junction box 70 . The output junction box 70 is located outside the box body 10 .

[0118] The output junction box 70 refers to a device used only for output wiring. In practical applications, the output junction box 70 is already very mature in the prior art and will not be described in detail here.

[0119] Optionally, the output junction box 70 is fixed on the box body 10. In practical applications, including but not limited to this, no specific limitation is made here, and it can be determined according to specific circumstances, all of which are within the protection scope of this application.

[0120] In this embodiment, since the output junction box 70 is located outside the box 10, the output junction box 70 can be replaced outside the box 10, so the combiner box reduces the possibility that the protection of the box 10 itself will be deteriorated due to human factors.

[0121] This embodiment also provides another implementation of the combiner box, and its specific structure can be found in Fig.11 ( Fig.11 Only in Fig.10 This embodiment is based on the above embodiment and further includes: a lightning protection module 80.

[0122] The two connection ends of the lightning protection module 80 are respectively connected to the two poles of the output end of the converging device 20 ; and the signal output ends of the lightning protection module 80 are both connected to the controller 60 .

[0123] It should be noted that the lightning protection module 80 is already very mature in the prior art and will not be described in detail here.

[0124] In the present embodiment, since the lightning protection module 80 is added, the components in the combiner box can be protected from being damaged when the combiner box is struck by lightning, thereby reducing the maintenance cost of the combiner box.

[0125] The above are only two implementations of the combiner box. In practical applications, including but not limited to these, no specific limitation is made here. It can be determined according to the specific situation and is within the protection scope of this application.

[0126] Another embodiment of the present application provides an implementation of a box body, which is specifically as follows Fig.12 As shown, it specifically includes: a box cover 01 and a box body 02 with a bottom; the box cover 01 is arranged on the top of the box body 02 in a static connection manner; and the box body 02 adopts an integrated molding process.

[0127] Among them, static connection refers to a connection in which the relative positions of the connected parts cannot and are not allowed to change during operation, for example, detachable connection methods such as threaded connection and pin connection, or non-detachable connection methods such as riveting and interference connection.

[0128] In addition, the one-piece molding process refers to the process of completing the molding of the entire part in one module at one time; this process is already very mature in the prior art and will not be described in detail here.

[0129] In this embodiment, since the box cover 01 is statically connected to the top of the box body 02 and the box body 02 is formed in one piece, the protection of the box body 10 is guaranteed to the greatest extent, thereby reducing the possibility of safety accidents; in addition, the overall cost of the junction box is further reduced.

[0130] This embodiment also provides an implementation of a box body, which specifically includes: a box cover, a box bottom and a box body; the box cover is arranged on the top of the box body in a static connection manner; and the box bottom is arranged on the bottom of the box body in a static connection manner.

[0131] In a specific example, the box body is formed by splicing multiple parts, and the connection method used for the splicing includes: static connection; in another specific example, the box body adopts an integrated molding process.

[0132] The above two examples only show two implementation methods of the box body, which are not specifically limited here and can be determined according to specific circumstances, and are all within the scope of protection of this application.

[0133] In this embodiment, since the box cover is arranged on the top of the box body in a static connection manner; the box bottom is arranged on the bottom of the box body in a static connection manner, and the box body is spliced ​​from multiple parts and the connection method used for the splicing is static connection, or the box body adopts an integrated molding process, the protection of the box body 10 is guaranteed to the greatest extent, thereby reducing the possibility of safety accidents; in addition, the overall cost of the junction box is further reduced.

[0134] Another embodiment of the present application provides an inverter system, whose specific structure is as follows: Fig.13 As shown, it specifically includes: an inverter 100 and at least one combiner box 200 provided by the above embodiment.

[0135] The output end of each combiner box 200 is connected to the DC side of the inverter 100; the AC side of the inverter 100 serves as the AC side of the inverter system.

[0136] Optionally, the input end of the combiner box 200 can be connected to the photovoltaic string 300. In practical applications, including but not limited to this, no specific limitation is made here, and it can be determined according to specific circumstances, all of which are within the protection scope of this application.

[0137] In addition, the controller 60 in each combiner box 200 is communicatively connected with the controller in the inverter 100 .

[0138] Optionally, the controller 60 in the combiner box 200 can be connected to the controller in the inverter 100 in a wired manner, such as RS485 or DC MPLC communication methods. In practical applications, this includes but is not limited to this. No specific limitation is made here and it may depend on the specific circumstances. It is all within the scope of protection of this application.

[0139] It should be noted that the inverter 100 is already very mature in the prior art and will not be described in detail here.

[0140] For the above description of the disclosed embodiments, the features recorded in each embodiment in this specification can be replaced or combined with each other, so that professional and technical personnel in this field can implement or use this application. The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with a preferred embodiment, it is not used to limit the utility model. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A combiner box, characterized in that: include: A box, a busbar, a wireless communication device, a switch device, a controller and at least two fuse devices; wherein: The confluence device is arranged inside the box; One end of the fuse device is connected to the input end of the converging device; The other end of the fuse device is connected to the input end of the combiner box; The fuse device is arranged on the box wall of the box, and the connection method of the fuse device is to connect the fuse device to the box wall from the outside of the box; The output end of the combiner device is connected to the first end of the switch device, and the second end of the switch device is connected to the output end of the combiner box; The opening and closing mechanism in the switch device is located outside the box; The wireless communication device is connected to the communication terminal of the controller.

2. The combiner box according to claim 1, characterized in that: The fuse device comprises: a fuse and a first connector; wherein: The first side of the fuse is connected to the corresponding input end of the merging device; The second side of the fuse is connected to the corresponding input end of the combiner box through the first connector.

3. The combiner box according to claim 2, characterized in that: The fuse device further includes: a second connector; wherein: The first side of the fuse is connected to the corresponding input end of the merging device through the second connector.

4. The combiner box according to claim 2, characterized in that: The fuse device further includes: a first current sampling device, and / or a second current sampling device; wherein: The signal output end of the first current sampling device is connected to the controller, and the first current sampling device is used to sample the current of the first end of the first side of the fuse; The signal output end of the second current sampling device is connected to the controller, and the second current sampling device is used to sample the current at the second end of the first side of the fuse.

5. The combiner box according to claim 4, characterized in that: The current sampling device includes: a Hall sensor, a shunt or a patch current sensor.

6. The combiner box according to claim 2, characterized in that: The fuse device further includes: a first anti-reverse diode branch, and / or a second anti-reverse diode branch; wherein: The first end of the first side of the fuse is connected to the anode of the first anti-reverse diode branch, and the cathode of the first anti-reverse diode branch is connected to the positive electrode of the corresponding input end of the merging device; The second end of the first side of the fuse is connected to the cathode of the second anti-reverse diode branch, and the anode of the second anti-reverse diode branch is connected to the negative electrode of the corresponding input end of the merging device.

7. The combiner box according to any one of claims 1 to 6, characterized in that: The box body comprises: a box cover and a box body with a bottom; wherein: The box cover is arranged on the top of the box body in a static connection manner; The box body is formed in one piece.

8. The combiner box according to any one of claims 1 to 6, characterized in that: The box body comprises: a box cover, a box bottom and a box body; wherein: The box cover is arranged on the top of the box body in a static connection manner; The box bottom is arranged at the bottom of the box body in a static connection manner; The box body is formed by splicing multiple parts, and the connection methods adopted for splicing include: static connection; or, The box body is formed in one piece.

9. The combiner box according to any one of claims 1 to 6, characterized in that: The switch device comprises: a switch, a transmission mechanism and an opening and closing mechanism; wherein: The moving contact of the switch is connected to the opening and closing mechanism through the transmission mechanism.

10. The combiner box according to any one of claims 1 to 6, characterized in that: Also includes: Output junction box; where: The second end of the switch device is connected to the output end of the combiner box through the output junction box; The output junction box is located outside the box, and the output junction box is arranged on the wall of the box.

11. The combiner box according to any one of claims 1 to 6, characterized in that: The communication method of the wireless communication device includes: WIFI and / or Bluetooth.

12. The combiner box according to any one of claims 1 to 6, characterized in that: Also includes: Lightning protection module; including: The two connection ends of the lightning protection module are respectively connected to the two poles of the output end of the converging device; The signal output ends of the lightning protection modules are all connected to the controller.

13. An inverter system, characterized in that: include: An inverter and at least one combiner box according to any one of claims 1 to 12; wherein: The output end of each combiner box is connected to the DC side of the inverter; The AC side of the inverter serves as the AC side of the inverter system.

14. The inverter system according to claim 13, characterized in that: The controller in each of the combiner boxes is communicatively connected with the controller in the inverter.

Images