CN204633078U - A kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box - Google Patents
A kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box Download PDFInfo
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- CN204633078U CN204633078U CN201520262506.XU CN201520262506U CN204633078U CN 204633078 U CN204633078 U CN 204633078U CN 201520262506 U CN201520262506 U CN 201520262506U CN 204633078 U CN204633078 U CN 204633078U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model is a kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box, and described bus-bar divides X-axis and Y-axis two main directions, and bus-bar body part take centre as maximum cross-section, toward the left and right sides in distribution of successively decreasing step by step; This photovoltaic combiner box arranges lightning protection device, always to conflux electric elements, branch's electric elements in the casing of closed; branch's electric elements divide two parts to be arranged in electric elements both sides of always confluxing; other 2 group of branches electric elements are arranged in upside, and lightning protection device and its protective device are also arranged in upside.Photovoltaic combiner box of the present utility model effectively make use of cabinet space, reduces header box overall volume and installing space; Meanwhile, this kind of mode of connection and bus-bar shape make convenient, the easy protection of header box back panel wiring, safety and reliability higher.Shorten current path, reduce system electrical loss; Longitudinal and transverse reversible bus-bar different piece adopts unequal section to amass, and reduces metal material consumption, effectively reduces production cost.
Description
Technical field
This technology relates to the electric elements used in solar photovoltaic generation system, relates in particular to a kind of bus-bar and photovoltaic combiner box in solar photovoltaic generation system.
Background technology
At present, energy scarcity problem is day by day serious, and clean energy resource is the inevitable developing direction of current low-carbon environment-friendly life, and solar energy is as the main energy in future, and along with the growth of solar power generation market scale, arise at the historic moment in large-sized photovoltaic power station.
In group string data solar photovoltaic generation system, be generally made up of photovoltaic array, inverter, interchange header box, case change.In order to reduce inverter and case become between line, simplied system structure, improve the reliability and maintainability of electricity generation system, the output cable of some, photovoltaic battery matrix that specification is identical can be together in series, form several photovoltaic arrays, and then photovoltaic DC-to-AC converter is connected to photovoltaic array output line, photovoltaic DC-to-AC converter is connected with photovoltaic combiner box, after confluxing in photovoltaic combiner box, output to case and become, form photovoltaic generating system.
In current group string data photovoltaic generating system, exchange photovoltaic combiner box and play the effect of forming a connecting link, being the tie connecting inverter and case change, is equipment small area analysis electric energy being confluxed into big current electric energy.The operation conditions exchanging photovoltaic combiner box directly affects whole photovoltaic generating system, so photovoltaic combiner box is of crucial importance.Exchange photovoltaic combiner box mainly to comprise: casing, mounting panel, branch's electric elements, lightning protection device, always to conflux electric elements.First inverter output cable is connected to the end of incoming cables of branch's electric elements, and branch's electric elements generally adopt AC circuit breaker, is installed on mounting panel, and 6 groups or 8 groups of inverters are confluxed into one group by general 6 roads or two kinds, 8 tunnels mode of confluxing.Exchange header box and lightning protection device is provided, complete the protection to lightning protection.After confluxing, exported by the electric elements that always conflux.
In existing scheme, the general side adopting branch road electric elements to be positioned over the electric elements that always conflux, upper and lower two-layer layout, adopts flexible cord to be connected to bus-bar, but first by detouring on the downside of mounting panel, must be connected on conversion terminal, then supplying client's wiring;
Technique scheme subject matter and shortcoming as follows:
1, branch road adopts flexible cord to connect, and must by detouring on the downside of mounting panel, complex process, and cost is high;
2, circuit breaker directly cannot supply client's wiring, and flexible cord must be used to be transferred on terminal;
3, branch breaker is arranged in main breaker side, and electric current bus-bar sectional area is large, and box volume is large, and cost is high;
4, wiring node is many, often increases a wiring node, increases a dangerous matter sources, and reliability reduces; Simultaneously for screw connects, add contact resistance, improve system power dissipation.
Patent 201220592506.2 " photovoltaic header box bus structure ", disclose a kind of photovoltaic header box bus-bar, this structure comprises a busbar body, the one group of circuit breaker that distributes in the side of busbar body connects gear shaping, the effect of these gear shapings is for being directly connected with other electric elements, a circular hole is had, for connecting the electric elements that always conflux in one end of busbar.
The shortcoming of the program: only at a direction connecting circuit element, width is too wide, and width and length ratio are not spatially optimized, and being not suitable for is having the occasion of width requirement to use; In addition, this busbar structure is uiform section formula structure, and it is unequal that the function due to bus-bar itself determines the electric current flow through in the different piece of busbar, can this uiform section structure not mated by electric current with institute, there is the problem of serious metal material waste, add production cost.
Patent 2011320830615.8 " photovoltaic intelligent header box confluence copper bar " discloses a kind of photovoltaic intelligent header box confluence copper bar for collecting fuse or circuit breaker, described bus-bar body surface side is provided with some circular holes along its length, confluence copper bar surface opposite side arranges some rectangle gear shapings along its length, and these gear shapings are used for being electrically connected with circuit breaker.
The shortcoming of above-mentioned patent: only at a direction connecting circuit element; Width is too wide, and width and length ratio are not spatially optimized, and being not suitable for is having the occasion of width requirement to use; In addition, this confluence copper bar is uiform section formula structure, and it is unequal that the function due to bus-bar itself determines the electric current flow through in the different piece of busbar, can this uiform section structure not mated by electric current with institute, there is the problem of serious metal material waste, add production cost.Moreover circular hole contained by above-mentioned confluence copper bar, then when carrying out being connected with other electric elements, need connect with screw, this kind of connection has unsteadiness, adds internal resistance, increases system loss.
Patent 201111073388.4 " comb bus bar connected system, comb bus bar and implementation method " disclose a kind of comb bus bar, this busbar is made up of interconnective bus-bar body and comb, described comb can insert the inlet wire port of outside circuit breaker, and busbar comb contacts with the line ball termination of described inlet wire port and connects; Wherein, electrical leads contacts is entered in corresponding with comb busbar opposite side and outside.
The shortcoming of above-mentioned patent: only at a direction connecting circuit element; Width is too wide, and width and length ratio are not spatially optimized, and being not suitable for is having the occasion of width requirement to use; In addition, this busbar that confluxes is uiform section formula structure, and it is unequal that the function due to bus-bar itself determines the electric current flow through in the different piece of busbar, can this uiform section structure not mated by electric current with institute, there is the problem of serious metal material waste, add production cost.
Patent 201310673903.1 " a kind of comb that confluxes be applied in photovoltaic combiner box " discloses one and comprises the output cable that confluxes (1), confluxes and comb and multiple bus terminal, the comb that confluxes has comb body (2) and multiple comb (6) to form, multiple comb is arranged in parallel within the side of comb body, the whole comb form of comb for copper coin is washed into that conflux; The output cable that confluxes is fixedly connected on and confluxes on the comb body of comb, and multiple comb of the comb that confluxes connect multiple bus terminal respectively.
The shortcoming of above-mentioned patent formula: only at a direction connecting circuit element; Width is too wide, and width and length ratio are not spatially optimized, and being not suitable for is having the occasion of width requirement to use; In addition, this busbar structure is uiform section formula structure, and because the electric current flow through in the different piece of busbar is unequal, this uiform section structure is not mated by electric current with institute, there is the problem of serious metal material waste, adds production cost; The input existing problems of confluxing of the program simultaneously, cause the resistance of major loop large, power consumption is high, improves operating cost.
The size that patent 201220172837.0 " conflux busbar and supply unit " discloses a kind of busbar cross-sectional area is ascending change along the length direction of described bus-bar.Described supply unit comprises first busbar, second that confluxes and to conflux busbar, total bus-bar, multiple electric conductor and parallel electric source module, described first busbar and second busbar that confluxes that confluxes is connected to described total bus-bar, and be connected to described parallel electric source module by described multiple electric conductor, described first the conflux size of cross-sectional area of busbar of busbar and second of confluxing is ascending change along the described first conflux busbar and the second length direction confluxing busbar, and has the maximum cross-section area at one end place being connected to described total bus-bar.
The shortcoming of above-mentioned patent formula: only at a direction connecting circuit element; Width is too wide, and width and length ratio are not spatially optimized, and being not suitable for is having the occasion of width requirement to use; In addition, although this confluxes, busbar adopts different cross-sectional areas according to the difference of electric current on the busbar that confluxes in different parts, effectively reduces metal material consumption to a certain extent, has saved cost., owing to being conflux in one end, all branch currents finally also all will be pooled to total bus-bar through side, thoroughly do not solve the problem that the magnitude of current mates completely with cross-sectional area, there is node in the input of confluxing of the program simultaneously, causes the resistance of major loop large, power consumption is high, improves operating cost.
Patent 201420539536.6 " a kind of multi-functional photovoltaic exchanges header box " discloses a kind of photovoltaic belonging to solar energy power generating technical field of auxiliary equipment and exchanges header box.This header box comprises housing, wiring board, branch road breaker of plastic casing, fuse, lightning arrester, binding post, ground connection breaker of plastic casing, bus-bar, described wiring board is arranged in housing by binding post, described branch road breaker of plastic casing has multiple, multiple branch road breaker of plastic casing arranges in the circuit board and is arranged in array, accessed one end of fuse by bus-bar after each branch road breaker of plastic casing is confluxed by bus-bar, the other end of fuse connects leading-out terminal, and one end of described ground connection breaker of plastic casing connects lightning arrester, the other end is connected to bus-bar by connecting row.This scheme can adapt to conflux the operational environment of alternating current.
The shortcoming of above-mentioned patent formula: 1. branch's electric elements are all horizontally set, the wire of upper and lower electric elements outlet causes overlap, conductor arrangement difficulty, there is lightning protection device below again, make wire outlet more difficult, consider the requirement of electric mounting code and electrical equipment standard, this is illustrated as each three branch's electric elements around, existing photovoltaic combiner box adopts 8 loop electric elements mostly, the space length of electric elements and casing will stop four electric elements conductor layouts spaces, the safe distance of lower end electrical equipment must be considered, could safety standard be met.Wire can be caused like this difficulty to be installed, the problems such as box volume is huge.2. there is alternately interspersed problem in bus-bar wiring.Protection difficulty is large, and coefficient of safety is low.3. lightning arrester and ground connection breaker of plastic casing layout unreasonable, make overall structure clean and tidy not.
Utility model content
The purpose of this utility model is to design a kind of header box of small-sized, simplicity exchanging photovoltaic combiner box longitudinal and transverse reversible bus-bar used and extend therefrom.Can efficiently solve branch road in conventional art adopts flexible cord to connect, and must by detouring on the downside of mounting panel, complex process, the problem that cost is high, and improves box house connection protective, prevents the potential safety hazard brought in operation and maintenance process.
In order to realize the purpose of this utility model, following technical scheme is proposed:
A kind of longitudinal and transverse reversible bus-bar, described bus-bar comprises trunk 10, front branch 12, rear branch 11 and total bus-bar 9, described trunk 10 connects front branch 12, rear branch 11 and total bus-bar 9; Described total bus-bar 9 is perpendicular to trunk 10, and described front branch 12 and trunk 10 level, described rear branch 11 is perpendicular to trunk 10.
Described front branch 12 is arranged at the two ends of trunk 10, and described total bus-bar 9 is arranged at the middle part of trunk.
Described trunk 10 amasss maximum in intermediate cross-section, turns left and reduces gradually with loaded current toward right direction sectional area.
Describedly be connected to front branch 12 on trunk 10 and rear branch 11, the coupling part of itself and electric elements is the variable cross-section shape that head breadth body is narrow, its sectional area with pass through currents match.
Described bus-bar is integrally formula, and its molding mode can have two kinds; One strikes out part blank with monoblock copper coin, then bending and molding;
The another kind of molding mode of described bus-bar is that the main part (10) of bus-bar is shaped separately, rear branch (11), front branch (12) and splicing ear part independently make, and synthesize longitudinal and transverse reversible bus-bar by welding manner.
The utility model also proposes a kind of photovoltaic combiner box using described longitudinal and transverse reversible bus-bar, and described bus-bar can horizontal and vertical connecting circuit element, and described total bus-bar 9 longitudinally connects the electric elements 6 that always conflux; Described front branch 12 connects branch's electric elements 1,3; Described rear branch 11 connects branch's electric elements 7 perpendicular to trunk 10.
Each connection branch's electric elements in branch 12 before the two ends of described trunk 10.
Between branch's electric elements that described front branch 12 two ends connect, connect lightning protection device and protective device.
The utility model adopts the longitudinal and transverse method being bi-directionally connected electric elements, and wire does not interfere with each other, easy for installation, and fail safe is good, takes full advantage of cabinet space, is extremely conducive to, there being the occasion of width requirement to use, reducing header box overall volume and installing space; Bus-bar, by confluxing in the middle of two side direction, shortens current path, reduces system electrical loss; Longitudinal and transverse reversible bus-bar different piece adopts unequal section to amass, and reduces metal material consumption, effectively reduces production cost.
The beneficial effect that technical solutions of the utility model are brought
1, without secondary switching, inlet wire can directly be fastened on circuit breaker by client, decreases secondary switching, decreases tie point, reduce internal resistance, reduce power consumption, saved cost;
2, branch road directly confluxes, and without cord structures, decreases tie point, reduces internal resistance, is applicable to outdoor operations, adds reliability;
3, due to longitudinal and transverse reversible bus structures, electric elements can be arranged in total isolating switch both sides and point two arrangements are put, and effectively make use of space, make header box casing miniaturized, reduce installing space;
4, the longitudinal and transverse two-way mode of connection and bus-bar shape make convenient, the easy protection of header box back panel wiring, safety and reliability higher;
5, the difference of bus-bar sectional area, makes the magnitude of current passed through with it match, decreases metal material consumption, saved cost.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram that the utility model exchanges photovoltaic combiner box.
Fig. 2 is the longitudinal and transverse reversible bus structures figure that the utility model exchanges photovoltaic combiner box.
Fig. 3 is that busbar makes separately and makes comparison diagram with separating.
In Fig. 4 three dimensions, three superimposed layout plans.
Fig. 5 is the overall structure design sketch that the utility model exchanges photovoltaic combiner box.
The utility model structure comprise casing 8, mounting panel 5, longitudinal and transverse reversible bus-bar 4, electric elements 1,3,7, isolating switch 6, lightning protection device 2.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the utility model is further described.
Concrete structure of the present utility model is as depicted in figs. 1 and 2: vertical, horizontal reversible bus-bar agent structure is in three dimensions, possessing X-axis and Y-axis both direction all can the feature of wiring, both on the horizontal agent structure basis of body, extend two groups of longitudinal branches, can twocouese connecting circuit element, therefore in casing, appliance component can divide two arrangements to put, branch's electric elements 7 points of two parts are longitudinally arranged in electric elements 6 both sides of confluxing respectively, other two group of branches electric elements 1 are transversely arranged on mounting panel both upper ends thereof, its terminal connecting portion of bus-bar, there is the bolt hole for connecting bus-bar and electric elements, electric elements and busbar are fixed by available bolt.The electric connecting member of bus-bar 4 and bus-bar body trunk portion not in a plane, longitudinal and transverse reversible bus-bar 4 point of three part, i.e. A phase, B phase, C phase.A phase is positioned at the superiors, B phase is positioned at intermediate layer, C phase is at orlop, due in this embodiment, the wiring position of electric elements all in same level, therefore three-phase conflux the terminal connecting portion of busbar also all need in unified plane, the busbar height of three-phase also just increases progressively successively, as for middle the distance that staggers, can determine according to actual conditions.As mentioned above, the height of three-phase bar-bar is adjustable, is not limited to a numerical value.Layer laminated bus bar arrangement like this, reduces longitudinal space distance.
The utility model is a kind of longitudinal and transverse reversible bus-bar and small-sized, simplicity (interchange) photovoltaic combiner box.Described longitudinal and transverse reversible bus-bar, primary structure divides X-axis and Y-axis two main directions, and the busbar that namely confluxes enumerates and longitudinally connects and lateral connection; And bus-bar body part take centre as maximum cross-section, toward the left and right sides in distribution of successively decreasing step by step; This photovoltaic combiner box can divide and arranges 9 group of branches electric elements, at least one lightning protection device 2, at least one the electric elements 6 that always conflux in the casing 8 of closed; Described wherein 6 group of branches electric elements 7 points of two parts are arranged in electric elements 6 both sides of always confluxing; other 2 group of branches electric elements 1 are arranged in upside, and lightning protection device 2 and its protective device (circuit breaker or fuse) branch's electric elements 3 are also arranged in upside.The terminal connecting portion of longitudinal and transverse reversible bus-bar 4 is connected respectively on each electric elements, uses bolted.Photovoltaic combiner box described in the utility model longitudinal and transverse reversible bus-bar used and header box adopt longitudinally, laterally two-way wiring, effectively make use of cabinet space, reduce header box overall volume and installing space; Bus-bar is confluxed by two side direction mid portions, shortens current path, reduces system electrical loss; Longitudinal and transverse reversible bus-bar different piece adopts unequal section to amass, and reduces metal material consumption, effectively reduces production cost.
Longitudinal and transverse reversible bus-bar in Fig. 2, it comprise totally conflux after the coupling part 9 of conductor, bus-bar trunk portion 10, branch's conductor coupling portion of confluxing divides 11,12, and the conductor coupling portion of lightning protection device 2 and branch's electric elements (fuse or circuit breaker) 3 divides 12.9 parts be connected with the electric elements that totally conflux, owing to being the place passed through after all branch roads conflux, the magnitude of current is larger, need the sectional area matched with it, according to each branch current, to calculate after finally confluxing required sectional area, determine each branch road by branch current amount and branch road quantity and the sectional area of trunk roads after confluxing.The electric connecting member of longitudinal and transverse reversible bus-bar and electric elements, being positioned in the Z-direction of three dimensions, is a underrange with the angle of X, Y plane, can be arbitrary value of 0 °-180 °, it is 90 ° with X, Y plane in this embodiment, being designed to shape is the narrow form of head breadth body, and the head breadth, ensures electrical contact area, body is narrow, ensure to mate with the magnitude of current, save metal material, reduce costs.
This longitudinal and transverse reversible bus-bar molding mode can be divided into two kinds, one makes integral type, with jointless form, strike out part blank with monoblock copper coin, and then bending and forming, so just made integral type and to have confluxed busbar, the terminal part in order to form relay contacts is not needed with this, and carry out welding or crimping, integral type reduces contact resistance, reduces system power dissipation.
The second molding mode, the busbar that will conflux divides two parts to make, main part 10 is shaped separately, the terminal part of the narrow shape of head breadth body be then connected 11,12 etc. with electrical equipment independently makes, because 9 groups of terminal connecting portion shapes are consistent, processing technology is also fairly simple, and a secondary mould can directly be stamped to form, and finally two parts is synthesized longitudinal and transverse reversible bus-bar by welding manner.This processing technology, in shaping engineering, waste material is less, adds stock utilization, and technique is simple, is easy to operation.Fig. 3 is that busbar makes separately and makes comparison diagram with separating.
Fig. 4 is in three dimensions, three superimposed layout plans; Fig. 5 is the overall structure design sketch that the utility model exchanges photovoltaic combiner box.Exchange photovoltaic combiner box longitudinal and transverse reversible bus-bar used, the branch road 12 reserved in bus-bar 4, linked lightning protection device 2 and its protective device (fuse or circuit breaker) 3.The protective device 3 of lightning protection device is connected to the branch road 12 of longitudinal and transverse reversible bus-bar, by bolt hole contained by bus-bar, is fixed with bolt, and then utilize the mode of connection of crimping and protective device to be electrically connected by copper bar lightning protection device.So take full advantage of the inner space of header box, make integral layout orderliness clear, clean and tidy, avoid numerous and diverse wiring.
Above-described specific embodiment; further detailed description has been carried out to the purpose of this utility model, technical scheme and beneficial effect; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a longitudinal and transverse reversible bus-bar, it is characterized in that, described bus-bar comprises trunk (10), front branch (12), rear branch (11) and total bus-bar (9), and described trunk (10) is upper connects front branch (12), rear branch (11) and total bus-bar (9); Described total bus-bar (9) is perpendicular to trunk (10), and described front branch (12) and trunk (10) level, described rear branch (11) is perpendicular to trunk (10).
2. bus-bar according to claim 1, is characterized in that: described front branch (12) is arranged at the two ends of trunk (10), and described total bus-bar (9) is arranged at the middle part of trunk.
3. bus-bar according to claim 2, is characterized in that: described trunk (10) amasss maximum in intermediate cross-section, turns left and reduces gradually with loaded current toward right direction sectional area.
4. bus-bar according to claim 3, it is characterized in that: described in be connected to front branch (12) on trunk (10) and rear branch (11), the coupling part of itself and electric elements, for the variable cross-section shape that head breadth body is narrow, its sectional area with pass through currents match.
5., according to the bus-bar of claim 1-3 described in one of them, it is characterized in that: described in the molding mode that confluxes can have two kinds, integral seamless formula is shaping and substep punching welding type is shaping.
6. bus-bar according to claim 5, is characterized in that: described bus-bar can integral type shaping, strike out part blank with monoblock copper coin, then bending and molding.
7. bus-bar according to claim 5, it is characterized in that: the main part (10) of described bus-bar is shaped separately, rear branch (11), front branch (12) and splicing ear part independently make, and synthesize longitudinal and transverse reversible bus-bar by welding manner.
8. one kind uses the photovoltaic combiner box of the longitudinal and transverse reversible bus-bar of claim 1-7 described in one of them, it is characterized in that: the bus-bar in described photovoltaic combiner box can horizontal and vertical connecting circuit element, described total bus-bar (9) longitudinally connects the electric elements (6) that always conflux; Described front branch (12) connects branch's electric elements (1), (3); Described rear branch (11) connects branch's electric elements (7) perpendicular to trunk (10).
9. photovoltaic combiner box according to claim 8, is characterized in that: the upper each connection branch's electric elements of the front branch (12) at the two ends of described trunk (10).
10. photovoltaic combiner box according to claim 9; it is characterized in that: between branch's electric elements that described front branch (12) two ends connect, be connected with lightning protection device (2) and the branch's electric elements (3) as its protective device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520262506.XU CN204633078U (en) | 2015-04-27 | 2015-04-27 | A kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box |
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| CN201520262506.XU CN204633078U (en) | 2015-04-27 | 2015-04-27 | A kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821786A (en) * | 2015-04-27 | 2015-08-05 | 首瑞（天津）电气设备有限公司 | Longitudinal and transverse bidirectional bus-bar and photovoltaic convergence box |
| CN106921097A (en) * | 2017-03-29 | 2017-07-04 | 新华三技术有限公司 | Busbar and preparation method thereof |
| WO2021203527A1 (en) * | 2020-04-10 | 2021-10-14 | 公牛集团股份有限公司 | Electrically-conductive metal strip, socket, and assembly method for socket |
-
2015
- 2015-04-27 CN CN201520262506.XU patent/CN204633078U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821786A (en) * | 2015-04-27 | 2015-08-05 | 首瑞（天津）电气设备有限公司 | Longitudinal and transverse bidirectional bus-bar and photovoltaic convergence box |
| CN104821786B (en) * | 2015-04-27 | 2017-09-29 | 首瑞（天津）电气设备有限公司 | A kind of longitudinal and transverse reversible bus-bar and photovoltaic combiner box |
| CN106921097A (en) * | 2017-03-29 | 2017-07-04 | 新华三技术有限公司 | Busbar and preparation method thereof |
| WO2021203527A1 (en) * | 2020-04-10 | 2021-10-14 | 公牛集团股份有限公司 | Electrically-conductive metal strip, socket, and assembly method for socket |
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