CN204859104U - Photovoltaic module terminal box with DC -DC converter chip - Google Patents
Photovoltaic module terminal box with DC -DC converter chip Download PDFInfo
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- CN204859104U CN204859104U CN201520468634.XU CN201520468634U CN204859104U CN 204859104 U CN204859104 U CN 204859104U CN 201520468634 U CN201520468634 U CN 201520468634U CN 204859104 U CN204859104 U CN 204859104U
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- chip
- terminal box
- converter chip
- negative electrode
- pad
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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 provides a photovoltaic module terminal box with DC -DC converter chip, the DC -DC converter chip of in locating the terminal box casing, DC -DC converter chip's negative electrode and positive electrode are connected with welding point no. 1, welding point no. 2 respectively, and every welding point below has a busbar to insert the trompil, export cable no. 1, export cable no. 2 and be connected in DC -DC converter chip's negative electrode and output electrode respectively, the utility model discloses simple structure replaces the bypass diode in traditional terminal box through adopting DC -DC converter chip, when avoiding the hot spot effect, also can improve the generation performance of subassembly under the condition of sheltering from, and beneficial effect is obvious.
Description
Technical field
The utility model belongs to area of solar cell, especially a kind of photovoltaic component terminal box with dc-dc chip.
Background technology
Conventional photovoltaic assemblies is normally by eliminating hot spot effect that assembly produces under obstruction conditions at every two string battery strings two ends reverse parallel connections bypass diodes, this diode is normally integrated in photovoltaic component terminal box.In such scheme, when battery be blocked generate heat to a certain extent time, bypass diode conducting, the battery strings be blocked is bypassed, this mode can prevent hot spot effect well, but under the condition only having percentage of batteries sheet to be blocked, just cause two strings or more battery strings to be bypassed, there is no power stage, significantly reduce the power generation performance of assembly.
For this reason, scheme is had to propose to solve the problems referred to above by the regulatory function of dc-dc chip.Dc-dc chip specific works principle is as follows: dc-dc chip can ensure that the power of input and output remains unchanged, and namely P input=I input × V inputs ≈ P output=I output × V output; When a slice in assembly or multi-disc cell piece are blocked, dc-dc will regulate the output current voltage of battery strings in parallel with it, the output current of battery strings of ensureing often to go here and there is consistent, thus avoids the current mismatch effect of blocking and causing, and avoids the generation of hot spot phenomenon; Because be blocked, battery strings can not be bypassed, thus avoids the phenomenon that power that general components produces because hot spot effect causes diode current flow declines to a great extent, and improves assembly power generation performance.The program normally by realizing in dc-dc integrated chip to assembly in component manufacturing processes.
Although integrated dc-dc packaging scheme can eliminate hot spot effect well, improve the power stage of assembly under obstruction conditions, but because dc-dc device chip needs to be integrated into component internal in module production process, add the step of assembly preparation flow, be unfavorable for improving module production; In addition, dc-dc is integrated in component internal, cannot keep in repair or change when dc-dc breaks down, and component failures can be caused to scrap.
Summary of the invention
Utility model object: for above-mentioned prior art Problems existing and deficiency, the purpose of this utility model is to provide a kind of bypass diode adopting dc-dc chip to replace in traditional terminal box, while avoiding hot spot effect, also can improve the photovoltaic component terminal box with dc-dc chip of the power generation performance of assembly under obstruction conditions.
Technical scheme: the utility model discloses a kind of photovoltaic component terminal box with dc-dc chip, comprise the dc-dc chip be located in terminal block housings, the negative electrode of described dc-dc chip is connected with pad one, pad two respectively with positive electrode, has a busbar access perforate below each pad; Export cable one, output cable two is connected with output electrode respectively at the negative electrode of dc-dc chip; The utility model structure is simple, and replaced the bypass diode in traditional terminal box by employing dc-dc chip, while avoiding hot spot effect, also can improve the power generation performance of assembly under obstruction conditions, beneficial effect is obvious.
Described dc-dc number of chips is 1-6.
Described dc-dc chip adopts and is connected in series, and the output electrode of the n-th dc-dc chip is connected by connecting line with the negative electrode of (n+1)th dc-dc chip.
Export cable one, output cable two is connected with the output electrode of the n-th dc-dc chip with the negative electrode of first dc-dc chip respectively.
Beneficial effect: the utility model compared with prior art, has the following advantages:
1. the photovoltaic component terminal box with integrated dc-dc chip is inner without the need to using bypass diode, but uses dc-dc chip.By the regulating action of dc-dc chip, the output current of each string battery strings is consistent, thus avoids assembly and cause current mismatch because blocking and produce hot spot effect;
2.DC-DC converter chip can avoid the battery strings be blocked to be bypassed, can the effective power stage of lifting subassembly under obstruction conditions;
3.DC-DC converter chip adopts to be connected in series and is placed in junction box, and dc-dc module integration can be avoided in the change of component internal scheme to assembly preparation flow; Avoiding dc-dc integrated chip cannot the risk of maintain and replace during dc-dc chip failure in component internal scheme.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of embodiment 1;
Fig. 3 is the structural representation of embodiment 2;
Wherein: 1.DC-DC converter chip, 2. export cable one, 3. export cable two, 4. pad one, 5. pad two, 6. busbar access perforate, 8. terminal block housings, dc-dc chip 1, dc-dc chip 2 102, dc-dc chip 3 103, connecting line 1, connecting line 2 105, pad 3 108, pad 4 109, pad 5 110, pad 6 111, busbar access perforate 1, busbar access perforate 2 115, busbar access perforate 3 115, busbar access perforate 4 117, busbar access perforate 5 118, busbar access perforate 6 119.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail; but illustrate that protection range of the present utility model is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the utility model; those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
A kind of photovoltaic component terminal box with dc-dc chip 1 as shown in Figure 1, comprise the dc-dc chip 1 be located in terminal block housings 8, the negative electrode of described dc-dc chip 1 is connected with pad 1, pad 25 respectively with positive electrode, has a busbar access perforate 6 below each pad; Export cable 1, output cable 23 is connected with output electrode respectively at the negative electrode of dc-dc chip 1; The utility model structure is simple, and replaced the bypass diode in traditional terminal box by employing dc-dc chip 1, while avoiding hot spot effect, also can improve the power generation performance of assembly under obstruction conditions, beneficial effect is obvious.
Embodiment 1
There is a photovoltaic component terminal box for dc-dc chip, this junction box structure as shown in Figure 2:
Dc-dc chip 1, dc-dc chip 2 102, dc-dc chip 3 103 are fixed in terminal block housings 8 by certain mode, and fixed form can be that screw is fixed, draw-in groove is fixed or other fixed form.
The output electrode of dc-dc chip 1 is connected by connecting line 1 with the negative electrode of dc-dc chip 2 102, the negative electrode of dc-dc chip 1 is connected with pad 1, its positive electrode is connected with pad 25, and the negative electrode of dc-dc chip 1 connects with exporting cable 1.
The output electrode of dc-dc chip 2 102 is connected by connecting line 2 105 with the negative electrode of dc-dc chip 3 103, and the negative electrode of dc-dc chip 2 102 is connected with pad 3 108, and its positive electrode is connected with pad 4 109.
The negative electrode of dc-dc chip 3 103 is connected with pad 5 110, and its positive electrode is connected with pad 6 111, and the output electrode of dc-dc chip 3 103 connects with exporting cable 23.
Connecting line 1 and connecting line 2 105 can be copper conductors, copper core conducting strips or other there is the conductor of excellent conductive performance; Exporting cable 1 for having the copper conductor of female, exporting cable 23 for having the copper conductor of male;
Pad is fixed in terminal block housings 8 by the situation of draw-in groove, and it can be the copper core conducting strip of electroplating surfaces with tin or the conduction steel disc of electroplating surfaces with tin.
Busbar access perforate 1, busbar access perforate 2 115, busbar access perforate 3 115, busbar access perforate 4 117, busbar access perforate 5 118, busbar access perforate 6 119 are positioned in terminal block housings 8, the perforate length of busbar access perforate is 8 ~ 10mm, width is 1 ~ 3mm, is 0 ~ 20mm with corresponding pad distance.
Embodiment 2
There is the structural representation of the photovoltaic component terminal box of multiple dc-dc chip 1 as shown in Figure 3, comprise the dc-dc chip 1 be located in terminal block housings 8, the negative electrode of described dc-dc chip 1 is connected with pad 1, pad 25 respectively with positive electrode, has a busbar access perforate 6 below each pad; Export cable 1, output cable 23 is connected with output electrode respectively at the negative electrode of dc-dc chip 1; Described dc-dc chip 1 quantity is 1-6; Employing is connected in series, and the output electrode of the n-th dc-dc chip 1 is connected by connecting line with the negative electrode of (n+1)th dc-dc chip 1.Export cable 1, output cable 23 is connected with the output electrode of the n-th dc-dc chip 1 with the negative electrode of first dc-dc chip 1 respectively.
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (4)
1. one kind has the photovoltaic component terminal box of dc-dc chip, it is characterized in that: comprise the dc-dc chip (1) be located in terminal block housings (8), the negative electrode of described dc-dc chip (1) is connected with pad one (4), pad two (5) respectively with positive electrode, has busbar access perforate (6) below each pad; Export cable one (2), output cable two (3) is connected with output electrode respectively at the negative electrode of dc-dc chip (1).
2. the photovoltaic component terminal box with dc-dc chip according to claim 1, is characterized in that: described dc-dc chip (1) quantity is 1-6.
3. the photovoltaic component terminal box with dc-dc chip according to claim 2, it is characterized in that: described dc-dc chip (1) adopts and is connected in series, and the output electrode of the n-th dc-dc chip (1) is connected by connecting line with the negative electrode of (n+1)th dc-dc chip (1).
4. the photovoltaic component terminal box with dc-dc chip according to claim 3, is characterized in that: export cable one (2), output cable two (3) is connected with the output electrode of the n-th dc-dc chip (1) with the negative electrode of first dc-dc chip (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468634.XU CN204859104U (en) | 2015-07-03 | 2015-07-03 | Photovoltaic module terminal box with DC -DC converter chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468634.XU CN204859104U (en) | 2015-07-03 | 2015-07-03 | Photovoltaic module terminal box with DC -DC converter chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204859104U true CN204859104U (en) | 2015-12-09 |
Family
ID=54749615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520468634.XU Expired - Fee Related CN204859104U (en) | 2015-07-03 | 2015-07-03 | Photovoltaic module terminal box with DC -DC converter chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204859104U (en) |
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2015
- 2015-07-03 CN CN201520468634.XU patent/CN204859104U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20180703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |