CN202034385U - Protecting diode module for solar energy photovoltaic cell assembly - Google Patents
Protecting diode module for solar energy photovoltaic cell assembly Download PDFInfo
- Publication number
- CN202034385U CN202034385U CN2011200643864U CN201120064386U CN202034385U CN 202034385 U CN202034385 U CN 202034385U CN 2011200643864 U CN2011200643864 U CN 2011200643864U CN 201120064386 U CN201120064386 U CN 201120064386U CN 202034385 U CN202034385 U CN 202034385U
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- Prior art keywords
- diode
- solar photovoltaic
- battery component
- photovoltaic battery
- diode module
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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
Abstract
The utility model discloses a protecting diode module for a solar energy photovoltaic cell assembly. The protecting diode module is characterized by comprising an aluminum substrate, wherein a plurality of mutually-insulating copper foils are arranged on the aluminum substrate, a plurality of diode chips are arranged between each two copper foils, two ends of the diode chips are respectively led out by bus bar welding points, and the upper portion of the plurality of diode chips is covered by an epoxy plastic layer. In the protecting diode module provided in the utility model, the diode chips with large power are directly sintered onto an AL PCB board so as to solve the heat radiation problem of the chips, thus reliability is high, packaging cost is reduced, thick-film design is reasonable, structure is simple, and usage is convenient.
Description
Technical field
The utility model relates to a kind of solar photovoltaic battery component protecting diode module, is applied to photovoltaic junction box.
Background technology
As everyone knows, the photovoltaic terminal box is widely used in the various sun-generated electric power devices as a vitals of solar-electricity source component.Conventional photovoltaic terminal box is used the big electric current Schottky diode of several traditional pins; because the photovoltaic terminal box requires to have waterproof and dampproof function; so diode is in an airtight environment; because diode adopts the not high epoxy material package envelope of conductive coefficient; therefore chip is when flowing through big electric current; temperature on its PN junction (or heat) can not be scattered quickly; cause on the chip temperature too high; the thermal resistance of axial type diode up to 40 ℃/W about; when ambient temperature raises; temperature rise on some device chip is near the maximum junction temperature of device; this heat that rising of element leakage stream index is produced until the inefficacy diode can't leave by its body and brace, causes the terminal box temperature too high, diode fails; solar battery sheet can't be protected, initiation fire when serious.
Summary of the invention
The utility model is primarily aimed at existing photovoltaic terminal box and is using the problem that conventional diode produced; it is bad to dispel the heat, and product strength is low, and consistency is poor; technical problems such as inconvenience are installed; thermal resistance with chip after the encapsulation technology encapsulation of this case is about 10 ℃/W, than about the low 30 ℃/W of conventional diode thermal resistance, under the same terms; the environment serviceability temperature improves 30 ℃ than conventional diode; the product strength height, high conformity, solar components protecting diode module easy for installation.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of solar photovoltaic battery component protecting diode module; it is characterized in that; comprise an aluminium base; the Copper Foil of some mutual insulation is set on described aluminium base; some diode chip for backlight unit are set between the Copper Foil in twos; described diode chip for backlight unit two ends are drawn respectively by the busbar pad, and the top of described some diode chip for backlight unit covers an epoxy plastics layer.
Reasonablely be, described diode chip for backlight unit is crossed on respectively in twos on the Copper Foil, and wherein a chip sintering is on a described Copper Foil, and another chip links to each other with another Copper Foil by a connecting piece;
Described solar photovoltaic battery component protecting diode module further comprises two package lead pads, is used to draw input and output after described some diode chip for backlight unit make up.
Reasonable is that described solar photovoltaic battery component protecting diode module comprises the plurality of fixed hole, is used for being connected with solar photovoltaic battery component.
Reasonable is that described module comprises quadrangle, polygon.
Reasonable is that described diode chip for backlight unit is more than or equal to 2.
Reasonable is on described busbar pad and the described assembly pad crimping seat to be installed respectively.
Reasonable is that described busbar pad is drawn by pin respectively.
Diode (led) module of the present utility model has good heat dispersion, and on the AL pcb board, to solve the chip cooling problem, the reliability height reduces packaging cost with heavy-duty diode chip sintering, and the thick film design is reasonable in design, simple in structure, the convenient use.
As preferably, above-mentioned diode (led) module, except pad and pin, other positions of whole module all are with the diode insulation, be fit to very much directly interconnected with metal shell, the heat dissipation problem and the fail safe that thoroughly solve the photovoltaic terminal box.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Fig. 1 is the principle schematic of band solar photovoltaic battery component and protecting diode module thereof;
Fig. 2 (A) is the schematic diagram of protecting diode module in the utility model one preferred embodiment;
Fig. 2 (B) is the local enlarged diagram of Fig. 2 (A);
Fig. 2 (C) is the circuit theory schematic diagram of Fig. 2 (A);
Fig. 3 is the protecting diode module diagram of another preferred embodiment of the utility model;
Fig. 4 is the protecting diode module diagram of the utility model the 3rd preferred embodiment.
Embodiment
Below by example, and in conjunction with the accompanying drawings, the technical solution of the utility model is done further concrete introduction.
Fig. 1 has provided the schematic diagram of the solar photovoltaic cell panel of band protective device, and wherein, solar photovoltaic cell panel is the battery modules that forms certain voltage and power with element cell E1～E3 (PN junction) after going here and there, also interconnecting.Individual elements begins not work this module in the module when making because of certain reason (comprising outside cause), and (when for example this part cell panel can not absorb sunlight because of birds droppings stains) can cause a certain area failures of battery modules, its output voltage or power output is badly damaged is directed at cisco unity malfunction.
In Fig. 1, adopted this solar-energy photo-voltaic cell protecting diode module; it promptly is the protective device that constitutes with low forward voltage drop, big electric current Schottky diode; can prevent the fault that above-mentioned reason causes; shown in Figure 1ly be attempted by on each element cell with second tube sheet D1～D3 array; it is in parallel with an element cell to illustrate each second tube sheet; owing to reverse polarity shown in Figure 1, under normal circumstances do not flow electric current among diode D1～D3, do not influence battery component work.
Fig. 2 (A) is depicted as the schematic diagram of solar photovoltaic battery component protecting diode module; comprise an aluminium base L1; some Copper Foil T1 are set on aluminium base L1; T2; T3; T4; (be illustrated as 3 being provided with Schottky diode between the Copper Foil in twos; D1～D3); Fig. 2 (B) has provided the enlarged side view of one of them PN junction diode, the copper foil layer T3 of mutually insulated is set, T4 on aluminium base L1; by soldering paste X21 the N knot of stamp-mounting-paper diode is welded on the Copper Foil T3, stamp-mounting-paper diode P knot is welded on a connecting piece X3 by soldering paste X22.The other end after this brace X3 bending on Copper Foil T4, forms a diode by soldering paste X23 sintering.The structure of other two diodes is with above-mentioned.Need to prove that diode is once sintered moulding.
Epoxy plastics body S1 side also be provided with two positive and negative levels to assembly connecting line pad J1, J2, and the busbar pad A1 that constitutes by Copper Foil, A2, A3, A4 is solder mask Z1 in twos between the pad.
Need to prove, except busbar pad A1, A2, A3, A4 package lead pad J1, J2, other positions of whole module all are to insulate with diode.
In addition, on four angles of aluminium base L1, also be provided with 4 fixing hole G1, G2, G3, G4, when being used to use and solar photovoltaic cell panel be fixed together.
After finishing the diode (led) module of said structure, adopt epoxy plastics S1 cast or molding, reserve busbar pad A1, A2, A3, A4 and assembly connecting line pad J1, J2 also can the sintering pin, and directly use is in conventional electrical connectors.
Fig. 2 (C) is the circuit theory schematic diagram of diode (led) module correspondence shown in Fig. 2 (A), and as can be seen, the element cell of solar components in parallel can be distinguished by busbar pad A1～A4 difference pin in the two ends of three diodes during use.
Fig. 3 is another preferred embodiment on Fig. 2 architecture basics.Different part is, busbar pad A1 therein, and A2, A3, A4 adopt the structure of crimping seat A1j, A2j, A3j, A4j, and the assembly pad can be installed crimping seat J1j, J2j.This situation is to use for the client who does not use welding.
Fig. 4 is the schematic diagram of the 3rd embodiment on Fig. 2 architecture basics.Different part is, has adopted pin B1, B2, and B3, B4 to replace traditional diode, directly uses in traditional terminal box, improves the serviceability temperature and the reliability of terminal box.
The described module of present embodiment is a quadrangle, is not limited to this shape, can also be other polygons according to the shape conversion of solar photovoltaic cell panel.And employed number of diodes can increase and decrease according to the quantity of element cell.
In the said structure, because chip directly is welded on the aluminium base, chip cooling is very fast, makes that the thermal resistance of chip is significantly little than conventional diode, and its structure adopts welding manner, and without connector, product reliability is improved, and cost also descends.
The front provides the description to preferred embodiment, so that any technical staff in this area can use or utilize the utility model.Various modifications to these embodiment are conspicuous to those skilled in the art, can be applied to other embodiment to total principle described here and not use creativeness.Thereby, the embodiment shown in the utility model will be not limited to here, and the wide region of principle that should disclose and new feature according to meeting here.
Claims (7)
1. solar photovoltaic battery component protecting diode module; it is characterized in that; comprise an aluminium base; the Copper Foil of some mutual insulation is set on described aluminium base; some diode chip for backlight unit are set between the Copper Foil in twos; described diode chip for backlight unit two ends are drawn respectively by the busbar pad, and the top of described some diode chip for backlight unit covers an epoxy plastics layer.
2. solar photovoltaic battery component protecting diode module according to claim 1, it is characterized in that, described diode chip for backlight unit is crossed on respectively in twos on the Copper Foil, and wherein a chip sintering is on a described Copper Foil, and another chip links to each other with another Copper Foil by a connecting piece;
Described solar photovoltaic battery component protecting diode module further comprises two package lead pads, is used to draw input and output after described some diode chip for backlight unit make up.
3. solar photovoltaic battery component protecting diode module according to claim 2 is characterized in that, described solar photovoltaic battery component protecting diode module comprises the plurality of fixed hole, is used for being connected with solar photovoltaic battery component.
4. solar photovoltaic battery component protecting diode module according to claim 3 is characterized in that described module comprises quadrangle, polygon.
5. solar photovoltaic battery component protecting diode module according to claim 4 is characterized in that described diode chip for backlight unit is more than or equal to 2.
6. according to claim 2 or 3 or 4 or 5 described solar photovoltaic battery component protecting diode modules, it is characterized in that, on described busbar pad and the described assembly pad crimping seat is installed respectively.
7. according to claim 2 or 3 or 4 or 5 described solar photovoltaic battery component protecting diode modules, it is characterized in that described busbar pad is drawn by pin respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200643864U CN202034385U (en) | 2011-03-11 | 2011-03-11 | Protecting diode module for solar energy photovoltaic cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200643864U CN202034385U (en) | 2011-03-11 | 2011-03-11 | Protecting diode module for solar energy photovoltaic cell assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034385U true CN202034385U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200643864U Expired - Fee Related CN202034385U (en) | 2011-03-11 | 2011-03-11 | Protecting diode module for solar energy photovoltaic cell assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683446A (en) * | 2011-03-11 | 2012-09-19 | 上海上斯电子有限公司 | Diode module for protecting solar photovoltaic battery component |
-
2011
- 2011-03-11 CN CN2011200643864U patent/CN202034385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683446A (en) * | 2011-03-11 | 2012-09-19 | 上海上斯电子有限公司 | Diode module for protecting solar photovoltaic battery component |
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| 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: 20111109 Termination date: 20150311 |
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| EXPY | Termination of patent right or utility model |