TW201339582A - Probe device used in measurement of property of solar battery cell - Google Patents
Probe device used in measurement of property of solar battery cell Download PDFInfo
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- 239000000523 sample Substances 0.000 title claims abstract description 129
- 238000005259 measurement Methods 0.000 title claims description 49
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- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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
Description
本發明係關於測量太陽電池單元之輸出特性時所使用之特性測量用探針裝置。 The present invention relates to a probe device for measuring a characteristic used when measuring an output characteristic of a solar battery cell.
太陽電池做為可再生之能源其重要性節節高升，近年來其需要持續大幅增加。當伴隨這樣的需求增加太陽電池廣泛流通之際，公正地測量並確認其輸出特性之技術變得越來越重要。 The importance of solar cells as a renewable energy source has been rising steadily, and its demand has continued to increase substantially in recent years. As solar cells are widely distributed along with such demand, techniques for fair measurement and confirmation of their output characteristics are becoming more and more important.
當測量太陽電池單元之輸出特性時，由於使用實際之太陽光會受到天候等影響而產生特性變動，因此現行是在將來自太陽模擬器之模擬太陽光照射於太陽電池單元之狀態下測量輸出特性。而即使在如此使用太陽模擬器公正且正確地測量太陽電池單元之輸出特性之情況中，亦有必要使與太陽電池單元之集電電極電性接觸之特性測量用探針之接觸阻抗低且安定。 When the output characteristics of the solar cell are measured, since the actual sunlight is affected by the weather and the like, the characteristic change is performed. Therefore, the current output characteristic is measured by irradiating the simulated solar light from the solar simulator to the solar cell. . Even in the case where the solar simulator is used to accurately and accurately measure the output characteristics of the solar cell unit, it is necessary to make the contact impedance of the characteristic measuring probe electrically contacting the collector electrode of the solar cell unit low and stable. .
專利文獻1中，作為習知技術，揭示有使以壓縮螺旋彈簧賦予勢能之複數針狀銷探針接觸設於受光面側之 太陽電池單元之電極而取出輸出訊號的太陽電池單元之特性測量裝置。 Patent Document 1 discloses, as a conventional technique, a plurality of needle-like pin probes that are provided with a potential energy by a compression coil spring, and are provided on the light-receiving surface side. The characteristic measuring device of the solar battery unit that outputs the signal is taken out from the electrode of the solar battery unit.
專利文獻1：特許第4386783號公報。 Patent Document 1: Patent No. 4,386,783.
如揭示於專利文獻1之習知之特性測量裝置，沿設於太陽電池單元之受光面之集電電極排列為一列之複數針狀探針係以壓縮螺旋彈簧賦予勢能，並藉由與該等集電電極電性接觸來以低接觸阻抗之方式取出輸出訊號。 According to the conventional characteristic measuring device disclosed in Patent Document 1, a plurality of needle probes arranged in a row along the collector electrodes provided on the light receiving surface of the solar cell unit are provided with potential energy by a compression coil spring, and by the set The electrical electrode is electrically contacted to take the output signal with low contact impedance.
為了如此使朝集電電極之接觸阻抗抑制降低且安定，有必要設置具有可耐受按壓針狀探針之壓縮螺旋彈簧之彈力之強度及大小的支持構件，又，必須配線進行與各探針電性連接之導線。然而，該等支持構件級配線導線之尺寸變大會導致所照射之模擬太陽光之一部份會被該支持構件及配線導線遮住，而於太陽電池單元上產生其等之陰影，而該陰影會成為正確之光電轉換特性測量的很大的障礙。 In order to reduce and stabilize the contact resistance of the collector electrode in this manner, it is necessary to provide a support member having the strength and magnitude of the elastic force of the compression coil spring that can withstand the needle probe, and it is necessary to perform wiring and each probe. Electrically connected wires. However, the size variation of the supporting member-level wiring wires causes a portion of the simulated sunlight to be blocked by the supporting member and the wiring wires to generate a shadow on the solar cell unit, and the shadow Will become a big obstacle to the measurement of correct photoelectric conversion characteristics.
因此，本發明之目的係提供一種可將朝應測量之太陽電池單元之電極之接觸阻抗安定且抑制降低，並且，使其朝受光面之模擬太陽光之照射幾乎不被遮住的太陽電池單元之特性測量用探針裝置。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a solar cell unit which can stabilize and suppress the contact impedance of an electrode of a solar cell unit to be measured, and which is hardly shielded from the simulated sunlight of the light receiving surface. A probe device for measuring characteristics.
根據本發明，太陽電池單元之特性測量用探針裝置，係包含有：拱形之第1導線接觸件，係以導電性金屬材料形成之具有彈性者；及固定支持部，係將該第1導線接觸件之至少其中一端加以固定者，且，第1導線接觸件係構成為沿著應測量之太陽電池單元之表面電極伸長並與太陽電池單元之受光面呈相對向，於朝表面電極按下時形變而沿表面電極導通者。 According to the invention, the probe device for measuring the characteristics of the solar battery unit includes: an arched first wire contact member having elasticity formed of a conductive metal material; and a fixing support portion for the first At least one end of the wire contact member is fixed, and the first wire contact member is configured to extend along a surface electrode of the solar cell to be measured and to face the light receiving surface of the solar cell unit, and to face the surface electrode Deformed underneath and turned on along the surface electrode.
拱形之第1導線接觸件係沿表面電極與太陽電池單元之受光面呈相對向，並於朝表面電極按下時形變而沿表面電極伸長且接觸導通。其結果，可將特性測量用探針裝置之接觸阻抗安定並保持低下，如此之外，不會再太陽電池單元之受光面上形成特性測量用探針之陰影，模擬太陽光之照射幾乎不會被遮住，因此可在幾乎不使太陽電池單元之轉換效率低落之狀態下進行特性測量。 The arched first wire contact member is opposed to the light receiving surface of the solar cell unit along the surface electrode, and deforms toward the surface electrode when pressed, and is elongated along the surface electrode and is in contact with the conduction. As a result, the contact resistance of the probe device for characteristic measurement can be stabilized and kept low, and therefore, the shadow of the probe for characteristic measurement is not formed on the light-receiving surface of the solar cell unit, and the irradiation of the simulated sunlight hardly occurs. It is shielded, so that characteristic measurement can be performed in a state where the conversion efficiency of the solar cell is hardly lowered.
固定支持部係宜構成為將第1導線接觸件之兩端加以固定者。 Preferably, the fixing support portion is configured to fix both ends of the first wire contact member.
固定支持部宜構成為僅將前述第1導線接觸件之其中一端加以固定，而第1導線接觸件之另一端係構成為可於其軸方向自由移動。 Preferably, the fixing support portion is configured to fix only one end of the first wire contact member, and the other end of the first wire contact member is configured to be freely movable in the axial direction.
太陽電池單元與固定支持部宜構成為可相對移動以使兩者之間隔變化。 The solar cell unit and the fixed support portion are preferably configured to be relatively movable to vary the interval between the two.
第1導線接觸件宜為電流檢出用端子，又，更具有第2導線接觸件，該第2導線接觸件係固定於前述固定支持部以使其與前述表面電極之兩端部相抵接之電壓檢出用端子。 Preferably, the first wire contact member is a current detecting terminal, and further includes a second wire contact member that is fixed to the fixed support portion so as to abut against both end portions of the surface electrode. Terminal for voltage detection.
第1導線接觸件宜為電流檢出及電壓檢出之共用端子。 The first wire contact member is preferably a common terminal for current detection and voltage detection.
第1導線接觸件宜具有較前述表面電極之寬度小之寬度。 The first wire contact member preferably has a width smaller than the width of the aforementioned surface electrode.
第1導線接觸件宜由單一導線、相互絞合之複數導線、或者周圍捲繞有導線之鋼線所構成者。該導線係由磷青銅、青銅、黃銅、白銅、洋白銅或銅之線材所構成者，且，該線材表面係施以鍍金或鍍鎳之線為佳。 The first wire contact member is preferably composed of a single wire, a plurality of wires stranded with each other, or a steel wire around which the wire is wound. The wire is composed of a material of phosphor bronze, bronze, brass, white copper, copper or copper, and the surface of the wire is preferably a gold-plated or nickel-plated wire.
根據本發明，可將特性測量用探針裝置之接觸阻抗安定且保持低落，除此之外，不會於太陽電池單元之受光面上產生特性測量用探針裝置之陰影，而模擬太陽光之照射幾乎不會被遮住，因此可在幾乎不使太陽電池單元之轉換效率低落之狀態下進行特性測量。 According to the present invention, the contact impedance of the probe device for characteristic measurement can be stabilized and kept low, and in addition, the shadow of the probe device for characteristic measurement is not generated on the light receiving surface of the solar cell unit, and the sunlight is simulated. The irradiation is hardly blocked, so that the characteristic measurement can be performed in a state where the conversion efficiency of the solar cell is hardly lowered.
10‧‧‧太陽電池單元 10‧‧‧Solar battery unit
10a‧‧‧表面電極 10a‧‧‧ surface electrode
11‧‧‧固定台 11‧‧‧ fixed table
12‧‧‧支持構件 12‧‧‧Support components
13‧‧‧內面電極用電流端子 13‧‧‧ Current terminal for inner electrode
14‧‧‧內面電極用電壓端子 14‧‧‧voltage terminals for inner electrodes
15、45‧‧‧電流測量用探針 15, 45‧‧‧ Probe for current measurement
16、46‧‧‧電壓測量用探針 16, 46‧‧‧ Probe for voltage measurement
17、47、48、49‧‧‧固定支持部 17, 47, 48, 49‧‧‧ Fixed Support Department
18、51、52、53‧‧‧連結構件 18, 51, 52, 53‧‧‧ Linked components
19、50‧‧‧安裝框 19, 50‧‧‧ installation box
19a‧‧‧溝 19a‧‧‧ditch
20‧‧‧螺栓 20‧‧‧ bolt
21、54‧‧‧上下移動構件 21, 54‧‧‧ moving parts up and down
22、55‧‧‧固定柱構件 22, 55‧‧‧Fixed column members
35‧‧‧共用探針 35‧‧‧Shared probe
第1圖係概略顯示作為本發明之第1實施型態，太陽電池單元之特性測量裝置之特性測量用探針裝置之構成的透視圖。 Fig. 1 is a perspective view showing a configuration of a probe device for characteristic measurement of a characteristic measuring device for a solar battery cell as a first embodiment of the present invention.
第2圖係概略顯示第1實施型態之電流測量用探針及電壓測量用探針之構成的側面圖。 Fig. 2 is a side view schematically showing the configuration of a current measuring probe and a voltage measuring probe according to the first embodiment.
第3圖係概略顯示作為本發明之第2實施型態，太陽電池單元之特性測量裝置之特性測量用探針裝置之構成的透視圖。 Fig. 3 is a perspective view showing a configuration of a probe device for characteristic measurement of a characteristic measuring device for a solar battery cell as a second embodiment of the present invention.
第4圖係概略顯示作為本發明之第3實施型態，太陽電池單元之特性測量裝置之特性測量用探針裝置之構成的透 視圖。 Fig. 4 is a view schematically showing the configuration of a probe device for measuring characteristics of a characteristic measuring device for a solar battery cell as a third embodiment of the present invention. view.
第5圖係概略顯示第3實施型態之電流測量用探針及電壓測量用探針之構成的側面圖。 Fig. 5 is a side view schematically showing the configuration of a current measuring probe and a voltage measuring probe according to a third embodiment.
第6圖係顯示藉由習知技術、以及第1實施型態及第3實施型態之技術之太陽電池單元之特性測量裝置所測量之特性的圖表。 Fig. 6 is a graph showing characteristics measured by a characteristic measuring device of a solar battery cell of the prior art and the first embodiment and the third embodiment.
第1圖係概略顯示本發明之第1實施型態之特性測量用探針裝置之構成，第2圖係概略顯示本實施型態之電流測量用探針及電壓測量用探針之構成。本實施型態之特性測量用探針裝置，係利用相互獨立之電流測量用探針及電壓用測量探針藉由4端子法進行太陽電池單元之輸出特性測量的裝置。 Fig. 1 is a view schematically showing the configuration of a probe device for measuring a characteristic according to a first embodiment of the present invention, and Fig. 2 is a view schematically showing the configuration of a probe for current measurement and a probe for voltage measurement according to the present embodiment. In the probe device for measuring characteristics of the present embodiment, the current measurement probe and the voltage measurement probe which are independent of each other are used to measure the output characteristics of the solar cell by the 4-terminal method.
第1圖及第2圖中，10係顯示應測量特性之太陽電池單元，11係顯示固定該太陽電池單元10之固定台。太陽電池單元10，其係以其內面與固定台11之表面抵接之方式藉由真空或其他機械式手段固定於固定台11上，於為其表面之受光面可供來自太陽模擬器之模擬太陽光大致垂直於受光面地加以照射。 In Figs. 1 and 2, 10 is a solar battery cell in which characteristics are to be measured, and 11 is a fixed table in which the solar battery unit 10 is fixed. The solar battery unit 10 is fixed to the fixing table 11 by vacuum or other mechanical means such that the inner surface thereof abuts against the surface of the fixing table 11, and the light receiving surface of the surface is available from the solar simulator. The simulated sunlight is illuminated substantially perpendicular to the light receiving surface.
固定台11係由導電性之金屬材料板所形成，並機械式地固著支持於支持部12。支持部12於本實施型態中係固定於靜止位置，因此固定台11施固定於靜止位置。該固定台11係兼用為與太陽電池單元10之內面之內面電極接觸並導通之內面端子之功能、以及將太陽電池單元10保持於 固定溫度加以冷卻之亨溫面板之功能。如第2圖所示，於該固定台11電性共通連接有內面電極用電流端子13及內面電極用電壓端子14。惟，關於由該等內面電極用電流端子13及內面電極用電壓端子14連接至測量機器之配線，省略其圖示。又，關於冷卻固定台11之機構亦省略其圖示。 The fixing table 11 is formed of a conductive metal material plate and is mechanically fixedly supported by the support portion 12. In the present embodiment, the support portion 12 is fixed to the rest position, so that the fixing table 11 is fixed to the rest position. The fixing table 11 also functions as an inner surface terminal that is in contact with and electrically connected to the inner surface electrode of the inner surface of the solar cell unit 10, and holds the solar battery unit 10 at The function of the Hengwen panel with a fixed temperature for cooling. As shown in FIG. 2, the inner surface electrode current terminal 13 and the inner surface electrode voltage terminal 14 are electrically connected in common to the fixed stage 11. The wiring connected to the measuring device by the inner surface electrode current terminal 13 and the inner surface electrode voltage terminal 14 is omitted. Further, the mechanism for cooling the fixing table 11 is also omitted.
於太陽電池單元10之受光面形成有單元本體、以及用以將單元本體之電動勢進行集電之本實施型態之例子為2個表面電極(匯流排條)10a。2個表面電極10a係相互平行伸長為直線狀。於特性測定時，如第1圖及第2圖所示，於各表面電極10a分別按下導通為表面電極用電流端子之電流測量用探針15、及為表面電極用電壓端子之電壓測量用探針16。當表面電極(匯流排條)為3個以上時，設置與該數量對應之電流測量用探針15及電壓測量用探針16。 An example of the present embodiment in which the unit body is formed on the light receiving surface of the solar battery cell 10 and the electromotive force of the unit body is collected is two surface electrodes (bus bar) 10a. The two surface electrodes 10a are linearly elongated in parallel with each other. In the measurement of the characteristics, as shown in FIG. 1 and FIG. 2, the current measuring probe 15 that is turned on as the surface electrode current terminal for each surface electrode 10a and the voltage measurement for the surface electrode voltage terminal are used. Probe 16. When the number of surface electrodes (bus bar) is three or more, the current measuring probe 15 and the voltage measuring probe 16 corresponding to the number are provided.
電流測量用探針15係與本發明之第1導線接觸件對應，而由以導電性金屬材料形成之具有彈性之拱形導線所構成。該電流測量用探針15係呈與太陽電池單元10之受光面呈相對向之狀態沿著表面電極10a伸長，與該表面電極10a抵接而電性連接，且其兩端由固定支持部17固定著。 The current measuring probe 15 is composed of an elastic arched wire formed of a conductive metal material in accordance with the first wire contact of the present invention. The current measuring probe 15 is extended along the surface electrode 10a in a state of being opposed to the light receiving surface of the solar battery cell 10, and is electrically connected to the surface electrode 10a, and both ends thereof are fixedly supported by the fixing portion 17. Fixed.
電壓測量用探針16係與本發明之第2導線接觸件對應，而由以導電性金屬材料形成之具有彈力之1對導線所構成。個電壓測量用探針16之一端係與太陽電池單元10之表面電極10a之一端部抵接而電性連接，且其另一端係固定於固定支持部17。 The voltage measuring probe 16 is composed of a pair of wires having an elastic force formed of a conductive metal material in accordance with the second wire contact of the present invention. One end of the voltage measuring probe 16 is electrically connected to one end of the surface electrode 10a of the solar cell unit 10, and the other end thereof is fixed to the fixed support portion 17.
該等電流測量用探針15及電壓測量用探針16，於本實施型態係將直徑0.5mm之洋白銅之3根導線相互絞合 而構成。藉由絞合，可增加與表面電極10a之接觸面積。本實施型態之變形態樣中，電流測量用探針15及電壓測量用探針16係由單一導線、相互絞合之2根或4根以上之複數導線、或者於周圍捲繞有導線之鋼線所構成。又，作為導線可使用磷青銅、青銅、黃銅、白銅或者銅之線材，而進一步將該等線材之表面施以鍍金或鍍鎳之線亦可。藉由進行前述表面處理，可提升導電性。又，電流測量用探針15及電壓測量用探針16之寬度構成為較太陽電池單元10之表面電極10a之寬度較小之寬度。 In the present embodiment, the current measuring probe 15 and the voltage measuring probe 16 are twisted together with three wires of a diameter of 0.5 mm. And constitute. By stranding, the contact area with the surface electrode 10a can be increased. In the modified embodiment of the present embodiment, the current measuring probe 15 and the voltage measuring probe 16 are composed of a single wire, two or four or more plural wires twisted together, or a wire wound around the wire. The steel wire is composed. Further, as the wire, a wire of phosphor bronze, bronze, brass, white copper or copper may be used, and the surface of the wire may be further plated with a gold plating or a nickel plating wire. Conductivity can be improved by performing the aforementioned surface treatment. Further, the widths of the current measuring probe 15 and the voltage measuring probe 16 are configured to be smaller than the width of the surface electrode 10a of the solar battery cell 10.
各固定支持部17係機械性地固著於各連結構件18，該連接構件18係藉由螺栓20等機械性地固著於安裝框19之溝19a。螺栓20等構成為可沿著溝19a移動，藉此，可使連接構件18及固定支持部17沿溝19a移動而將電流測量用探針15及電壓測量用探針16正確對位至表面電極10a之中心線上。 Each of the fixing support portions 17 is mechanically fixed to each of the coupling members 18, and the connecting members 18 are mechanically fixed to the grooves 19a of the mounting frame 19 by bolts 20 or the like. The bolt 20 and the like are configured to be movable along the groove 19a, whereby the connecting member 18 and the fixed support portion 17 can be moved along the groove 19a to correctly align the current measuring probe 15 and the voltage measuring probe 16 to the surface electrode. On the center line of 10a.
安裝框19係固著於上下移動構件21，該上下移動構件21係構成為可相對於固定柱構件22於上下方向升降。藉此，可變化電流測量用探針15及電壓測量用探針16、與太陽電池單元10之表面電極10a之間的間隔。 The mounting frame 19 is fixed to the vertical moving member 21, and the vertical moving member 21 is configured to be movable up and down with respect to the fixed column member 22. Thereby, the interval between the current measuring probe 15 and the voltage measuring probe 16 and the surface electrode 10a of the solar battery cell 10 can be changed.
當進行太陽電池單元10之輸出特性之測量時，藉由使上下移動構件21下降，可將電流測量用探針15朝表面電極10a按下而形變，而與表面電極10a之全體電性接觸而導通，並且將電壓測量用探針16與表面電極10a之一部分電性接觸而導通。藉此，可測量太陽電池單元10之輸出。然而，關於由電流測量用探針15及電壓測量用探針16連接至 測量機器之配線，於第1圖中省略其表示。 When the measurement of the output characteristics of the solar battery cell 10 is performed, by lowering the vertical movement member 21, the current measuring probe 15 can be pressed toward the surface electrode 10a to be deformed, and electrically contacted with the entire surface electrode 10a. It is turned on, and the voltage measuring probe 16 is electrically connected to one of the surface electrodes 10a to be electrically connected. Thereby, the output of the solar cell unit 10 can be measured. However, the probe 15 for voltage measurement and the probe 16 for voltage measurement are connected to The wiring of the measuring machine is omitted in Fig. 1 .
如同以上所說明，根據本實施型態，係使電流測量用探針15及電壓測量用探針16按壓至表面電極10a上使其導通，並且更使電流測量用探針15電性接觸表面電極10a全體，因此可得到與多點接觸狀態相同之功能。亦即，可將作為特性測量用探針裝置之接觸阻抗安定並保持為較低除此之外，不會在太陽電池單元10之受光面上產生該等探針之陰影，而幾乎不會遮住模擬太陽光之照射，因此可在太陽電池單元10之轉換效率幾乎不會更低落之狀態下來進行特性測量。順道一提，根據本案之申請人與習知特性測量用探針裝置比起來轉換效率提升了2.3%。 As described above, according to the present embodiment, the current measuring probe 15 and the voltage measuring probe 16 are pressed against the surface electrode 10a to be turned on, and the current measuring probe 15 is electrically contacted with the surface electrode. Since 10a is the whole, the same function as the multi-point contact state can be obtained. That is, the contact impedance of the probe device for characteristic measurement can be stabilized and kept low, and the shadow of the probes is not generated on the light receiving surface of the solar cell unit 10, and is hardly covered. By illuminating the simulated sunlight, the characteristic measurement can be performed in a state where the conversion efficiency of the solar cell unit 10 is hardly lowered. By the way, the applicant according to the present case has a 2.3% improvement in conversion efficiency compared to the conventional probe device for measuring characteristics.
然而，前述實施型態係構成為使安裝有電流測量用探針15及電壓測量用探針16之安裝框19為可升降，且固定有太陽電池單元10之固定台11為靜止之構成，但很明顯亦可使安裝框19為靜止而固定台11為可升降之構成。 However, the above-described embodiment is configured such that the mounting frame 19 to which the current measuring probe 15 and the voltage measuring probe 16 are attached is movable up and down, and the fixing table 11 to which the solar battery unit 10 is fixed is stationary. It is obvious that the mounting frame 19 can be made stationary and the fixed table 11 can be moved up and down.
第3圖係概略顯示本發明之第2實施型態之特性測量用探針裝置之構成。本實施型態之特性測量用探針裝置係利用共通探針35來進行電流測量及電壓測量之太陽電池單元10之太陽電池單元之特性測量裝置。本實施型態中，關於與第1圖及第2圖之實施型態之情況同樣之構成要素係使用相同編號並省略其說明。 Fig. 3 is a view schematically showing the configuration of a probe device for measuring a characteristic according to a second embodiment of the present invention. The probe device for measuring a characteristic of the present embodiment is a characteristic measuring device for a solar battery cell of the solar battery cell 10 that performs current measurement and voltage measurement using the common probe 35. In the present embodiment, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and their description will be omitted.
本實施型態中，於特性測量時，如第3圖所示，於各表面電極10a將使用於電流測量及電壓測量雙方之共通探針35按下並導通。 In the present embodiment, at the time of characteristic measurement, as shown in FIG. 3, the common probe 35 used for both current measurement and voltage measurement is pressed and turned on in each surface electrode 10a.
共通探針35係與本發明之第1導線接觸件對應， 由以導電性金屬材料形成之具有彈性之拱形導線所構成。該共通探針35係在與太陽電池單元10之受光面呈相對向之狀態下沿該表面電極10a伸長，並與該表面電極10a抵接而電性連接，且其兩端係藉由固定支持部17加以固定。 The common probe 35 corresponds to the first wire contact of the present invention. It is composed of an elastic arched wire formed of a conductive metal material. The common probe 35 is extended along the surface electrode 10a while being opposed to the light receiving surface of the solar cell unit 10, and is electrically connected to the surface electrode 10a, and both ends thereof are fixedly supported. The part 17 is fixed.
共通探針35於本實施型態係將直徑0.5mm之洋白銅之3根導線相互絞合而構成。本實施型態之變形態樣中，共通探針35由單一導線、相互絞合之2根或4根以上之複數導線、或者於周圍捲繞有導線之鋼線所構成。又，作為導線可使用磷青銅、青銅、黃銅、白銅或者銅之線材，而進一步將該等線材之表面施以鍍金或鍍鎳之線亦可。藉由進行前述表面處理，可提升導電性。又，共通探針35之寬度構成為較太陽電池單元10之表面電極10a之寬度較小之寬度。 In the present embodiment, the common probe 35 is formed by twisting three wires of a white copper having a diameter of 0.5 mm. In the modified embodiment of the present embodiment, the common probe 35 is composed of a single wire, two or four or more plural wires twisted together, or a steel wire around which a wire is wound. Further, as the wire, a wire of phosphor bronze, bronze, brass, white copper or copper may be used, and the surface of the wire may be further plated with a gold plating or a nickel plating wire. Conductivity can be improved by performing the aforementioned surface treatment. Further, the width of the common probe 35 is configured to be smaller than the width of the surface electrode 10a of the solar battery cell 10.
由於前述之第2實施型態之其他構成及作用效果與顯示於第1圖及第2圖之第1實施型態之情況相同，因此省略其說明。 Since the other configurations and operational effects of the second embodiment described above are the same as those of the first embodiment shown in FIGS. 1 and 2, the description thereof will be omitted.
第4圖係概略顯示本發明之第3實施型態之特性測量用探針裝置之構成，第5圖係概略顯示本實施型態之電流測量用探針及電壓測量用探針之構成。本實施型態之特性測量用探針裝置係利用相互獨立之電流測量用探針及電壓測量用探針藉由4端子法來進行太陽電池單元10之輸出特性測量的裝置。 Fig. 4 is a view schematically showing the configuration of a probe device for measuring a characteristic according to a third embodiment of the present invention, and Fig. 5 is a view schematically showing the configuration of a probe for current measurement and a probe for voltage measurement according to the present embodiment. The probe device for characteristic measurement according to the present embodiment is a device for measuring the output characteristics of the solar cell unit 10 by a four-terminal method using mutually independent current measuring probes and voltage measuring probes.
於第4圖及第5圖中，10係顯示應測量特性之太陽電池單元、11係顯示固定太陽電池單元10之固定台。太陽電池單元10係以其內面與固定台11之表面抵接之方式藉由 真空或其他機械性手段固定於固定台11上，且來自太陽模擬器之模擬太陽光可大至垂直受光面地照射於為其表面之受光面。 In Fig. 4 and Fig. 5, the 10 series shows the solar cell unit to be measured, and the 11 series shows the fixed stage of the fixed solar cell unit 10. The solar battery unit 10 is configured such that its inner surface abuts against the surface of the fixed table 11 A vacuum or other mechanical means is fixed to the fixed table 11, and the simulated sunlight from the solar simulator can be illuminated to the light receiving surface of its surface as large as the vertical light receiving surface.
固定台11係由導電性之金屬材料板所形成，而由未圖示之支持構件機械性地固著並支持。支持構件於本實施型態係固定於靜止位置，因此固定台11亦固定於靜止位置。該固定台11係兼用為接觸於太陽電池單元10之內面電極而導通之內面端子之功能、以及將太陽電池單元10保持於固定溫度加以冷卻之恆溫面板之功能。如第5圖所示，該固定台11電性共通連接有內面電極用電流端子13及內面電極用電壓端子14。惟，關於由該等內面電極用電流端子13及內面電極用電壓端子14連接至測量機器之配線省略其圖示。又，就冷卻固定台11之手段亦省略其圖示。 The fixing table 11 is formed of a conductive metal material plate, and is mechanically fixed and supported by a supporting member (not shown). The support member is fixed to the rest position in this embodiment, so that the fixing table 11 is also fixed to the rest position. The fixing table 11 also functions as a function of the inner surface terminal that is in contact with the inner surface electrode of the solar battery cell 10 and a constant temperature panel that holds the solar battery unit 10 at a fixed temperature and is cooled. As shown in FIG. 5, the fixed stage 11 is electrically connected in common to the inner surface electrode current terminal 13 and the inner surface electrode voltage terminal 14. However, the wiring connected to the measuring device by the inner surface electrode current terminal 13 and the inner surface electrode voltage terminal 14 is omitted. Further, the means for cooling the fixing table 11 is also omitted.
於太陽電池單元10之受光面形成有單元本體、及將單元本體之電動勢進行集電之本實施型態之例子為2個表面電極(匯流排條)10a。2個表面電極10a係相互平行伸長為直線狀。於特性測定時，如第4圖及第5圖所示，於各表面電極10a分別按下導通為表面電極用電流端子之電流測量用探針45、及為表面電極用電壓端子之電壓測量用探針46。當表面電極(匯流排條)為3個以上時，設置與該數量對應之電流測量用探針45及電壓測量用探針46。 An example of the present embodiment in which the unit body is formed on the light receiving surface of the solar battery cell 10 and the electromotive force of the unit body is collected is two surface electrodes (bus bar) 10a. The two surface electrodes 10a are linearly elongated in parallel with each other. In the measurement of the characteristics, as shown in FIGS. 4 and 5, the current measuring probe 45 that is turned on as the surface electrode current terminal and the voltage electrode for the surface electrode voltage terminal are pressed for each of the surface electrodes 10a. Probe 46. When the number of surface electrodes (bus bar) is three or more, the current measuring probe 45 and the voltage measuring probe 46 corresponding to the number are provided.
電流測量用探針45係與本發明之第1導線接觸件對應，由以導電性金屬材料形成之具有彈性之拱形導線所構成。該電流測量用探針45係在與太陽電池單元10之受光面呈相對向之狀態下沿表面電極10a伸長，與表面電極10a 抵接而電性連接，其其中一端係以螺絲等固定於固定支持部47，而另一端係由支持部48支持而可於導線之軸方向自由移動。如此，本實施型態中，由於電流測量用探針45其只有其中一端為固定，而另一端可於軸方向自由移動，因此於表面電極10a接觸時，可使其中央部之飄移或左右方向之偏離由軸方向之移動吸收，而可均勻接觸表面電極10a，可得到更好之電性接觸。 The current measuring probe 45 is composed of an elastic arched wire formed of a conductive metal material in accordance with the first wire contact of the present invention. The current measuring probe 45 is extended along the surface electrode 10a in a state opposed to the light receiving surface of the solar battery cell 10, and the surface electrode 10a One end is electrically connected to the fixed support portion 47 by screws or the like, and the other end is supported by the support portion 48 to be freely movable in the axial direction of the wire. As described above, in the present embodiment, since only one of the current measuring probes 45 is fixed and the other end is freely movable in the axial direction, when the surface electrode 10a is in contact, the central portion can be moved or left and right. The deviation is absorbed by the movement of the axial direction, and the surface electrode 10a can be uniformly contacted, and a better electrical contact can be obtained.
電壓測量用探針46係與本發明之第2導線接觸件對應，由以導電性金屬材料形成之具有彈性之拱形導線所構成。個電壓測量用探針46之其中一端係與太陽電池單元10之表面電極10a之一端部抵接而電性連接，其另一端係以螺絲等固定於固定支持部49。本實施型態中，電壓測量用探針46係就各表面電極10a僅設置一個。當然，亦可將電壓測量用探針46就表面電極10a於其兩端部設置2個。 The voltage measuring probe 46 is composed of an elastic arched wire formed of a conductive metal material in accordance with the second wire contact of the present invention. One end of each of the voltage measuring probes 46 is electrically connected to one end of the surface electrode 10a of the solar battery cell 10, and the other end thereof is fixed to the fixed support portion 49 by screws or the like. In the present embodiment, the voltage measuring probe 46 is provided only for each surface electrode 10a. Of course, the voltage measuring probe 46 may be provided with two surface electrodes 10a at both ends thereof.
該等電流測量用探針45及電壓測量用探針46，於本實施型態係將直徑0.5mm之洋白銅之3根導線相互絞合而構成。藉由絞合，可增加與表面電極10a之接觸面積。本實施型態之變形態樣中，電流測量用探針45及電壓測量用探針46係由單一導線、相互絞合之2根或4根以上之複數導線、或者於周圍捲繞有導線之鋼線所構成。又，作為導線可使用磷青銅、青銅、黃銅、白銅或者銅之線材，而進一步將該等線材之表面施以鍍金或鍍鎳之線亦可。藉由進行前述表面處理，可提升導電性。又，電流測量用探針45及電壓測量用探針46之寬度構成為較太陽電池單元10之表面電極10a之寬度較小之寬度。 In the present embodiment, the current measuring probe 45 and the voltage measuring probe 46 are configured by twisting three wires of ocean white copper having a diameter of 0.5 mm. By stranding, the contact area with the surface electrode 10a can be increased. In the modified embodiment of the present embodiment, the current measuring probe 45 and the voltage measuring probe 46 are a single wire, two or four or more plural wires twisted together, or a wire wound around the wire. The steel wire is composed. Further, as the wire, a wire of phosphor bronze, bronze, brass, white copper or copper may be used, and the surface of the wire may be further plated with a gold plating or a nickel plating wire. Conductivity can be improved by performing the aforementioned surface treatment. Further, the widths of the current measuring probe 45 and the voltage measuring probe 46 are configured to be smaller than the width of the surface electrode 10a of the solar battery cell 10.
固定支持部47係以未圖示之螺栓等固定於固著於安裝框50之連接構件51而可拆裝。該連結構件51係藉由使例如2片帶狀板構件呈相對向固定而於之間形成太陽電池單元10之寬方向之溝(未圖示)所形成者，各固定支持部47係以螺栓等機械性地固定於該連結構件51之溝。螺栓係構成為可沿該溝移動，藉此，使固定支持部47沿溝移動可使電流測量用探針45正確對位至表面電極10a之中心線上。又，支持部48係以未圖示之螺栓等固定於固著於安裝框50之連結構件52且可拆裝。該連結構件52係藉由使例如2片帶狀板構件呈相對向固定而於之間形成太陽電池單元10之寬方向之溝(未圖示)所形成者，各支持部48係藉由螺栓等機械性地固定於該連結構件52之溝。螺栓係構成為可沿該溝移動，藉此，使支持部48沿溝移動可使電流測量用探針45正確對位至表面電極10a之中心線上。 The fixing support portion 47 is detachably attached to the connecting member 51 fixed to the mounting frame 50 by a bolt or the like (not shown). The connecting member 51 is formed by, for example, forming a groove in a width direction (not shown) of the solar battery cell 10 between the two strip-shaped plate members, and each of the fixing support portions 47 is bolted. The groove is mechanically fixed to the connecting member 51. The bolt is configured to be movable along the groove, whereby moving the fixing support portion 47 along the groove allows the current measuring probe 45 to be correctly aligned to the center line of the surface electrode 10a. Further, the support portion 48 is detachably fixed to the connecting member 52 fixed to the mounting frame 50 by a bolt or the like (not shown). The connecting member 52 is formed by forming, for example, two strip-shaped plate members that are oppositely fixed to form a groove (not shown) in the width direction of the solar battery cell 10, and each support portion 48 is formed by a bolt. The groove is mechanically fixed to the connecting member 52. The bolt is configured to be movable along the groove, whereby moving the support portion 48 along the groove allows the current measuring probe 45 to be correctly aligned to the center line of the surface electrode 10a.
固定支持部49係以未圖示之螺栓等固定於固著於安裝框50之連接構件53而可拆裝。該連結構件53係藉由使例如2片帶狀板構件呈相對向固定而於之間形成太陽電池單元10之寬方向之溝(未圖示)所形成者，各固定支持部49係藉由螺栓等機械性地固定於該連結構件53之溝。螺栓係構成為可沿該溝移動，藉此，使固定支持部49沿溝移動可使電壓測量用探針46正確對位至表面電極10a之中心線上。 The fixing support portion 49 is detachably attached to the connecting member 53 fixed to the mounting frame 50 by a bolt or the like (not shown). The connecting member 53 is formed by forming, for example, two strip-shaped plate members that are oppositely fixed to form a groove (not shown) in the width direction of the solar cell unit 10, and each of the fixing support portions 49 is formed by A bolt or the like is mechanically fixed to the groove of the coupling member 53. The bolt is configured to be movable along the groove, whereby moving the fixed support portion 49 along the groove allows the voltage measuring probe 46 to be correctly aligned to the center line of the surface electrode 10a.
安裝框50係係固著於上下移動構件54，該上下移動構件54係構成為可相對於固定柱構件55於上下方向升降。藉此，可變化電流測量用探針45及電壓測量用探針46、與 太陽電池單元10之表面電極10a之間的間隔。 The mounting frame 50 is fixed to the vertical moving member 54, and the vertical moving member 54 is configured to be movable up and down with respect to the fixed column member 55. Thereby, the current measuring probe 45 and the voltage measuring probe 46 can be changed, and The spacing between the surface electrodes 10a of the solar cell unit 10.
當進行太陽電池單元10之輸出特性之測量時，藉由使上下移動構件54下降，可將電流測量用探針45朝表面電極10a按下而形變，而與表面電極10a之全體電性接觸而導通，並且將電壓測量用探針46與表面電極10a之一部分電性接觸而導通。藉此，可測量太陽電池單元10之輸出。然而，關於由電流測量用探針45及電壓測量用探針46連接至測量機器之配線，於第4圖中省略其表示。 When the measurement of the output characteristics of the solar battery cell 10 is performed, by lowering the vertical movement member 54, the current measuring probe 45 can be pressed toward the surface electrode 10a to be deformed, and electrically contacted with the entire surface electrode 10a. It is turned on, and the voltage measuring probe 46 is electrically connected to one of the surface electrodes 10a to be electrically connected. Thereby, the output of the solar cell unit 10 can be measured. However, the wiring connected to the measuring device by the current measuring probe 45 and the voltage measuring probe 46 is omitted from the fourth drawing.
如同以上所說明，根據本實施型態，係使電流測量用探針45及電壓測量用探針46按壓至表面電極10a上使其導通，除此之外使電流測量用探針45電性接觸表面電極10a全體，因此可得到與多點接觸狀態相同之功能。特別於本實施型態中，僅有電流測量用探針45之其中一端為固定，而另一端可朝軸方向自由移動，因此與表面電極10a接觸時，可使其中央部之飄移或左右方向之偏離由軸方向之移動吸收，而可均勻接觸表面電極10a，可得到更好之電性接觸。亦即，可將作為特性測量用探針裝置之接觸阻抗安定並保持為較低，除此之外，不會在太陽電池單元10之受光面上產生該等探針之陰影，而幾乎不會遮住模擬太陽光之照射，因此可在太陽電池單元10之轉換效率幾乎不會更低落之狀態下來進行特性測量。 As described above, according to the present embodiment, the current measuring probe 45 and the voltage measuring probe 46 are pressed against the surface electrode 10a to be electrically connected, and the current measuring probe 45 is electrically contacted. Since the entire surface electrode 10a is provided, the same function as the multi-point contact state can be obtained. In particular, in the present embodiment, only one end of the current measuring probe 45 is fixed, and the other end is freely movable in the axial direction, so that when it is in contact with the surface electrode 10a, the central portion can be moved or left and right. The deviation is absorbed by the movement of the axial direction, and the surface electrode 10a can be uniformly contacted, and a better electrical contact can be obtained. That is, the contact impedance of the probe device for characteristic measurement can be stabilized and kept low, and in addition, the shadow of the probes is not generated on the light receiving surface of the solar cell unit 10, and hardly The illumination of the simulated sunlight is blocked, so that the characteristic measurement can be performed in a state where the conversion efficiency of the solar battery cell 10 is hardly lowered.
然而，前述實施型態係構成為使安裝有電流測量用探針45及電壓測量用探針46之安裝框50為可升降，且固定有太陽電池單元10之固定台11為靜止之構成，但很明顯亦可使安裝框50為靜止而固定台11為可升降之構成。 However, the above-described embodiment is configured such that the mounting frame 50 to which the current measuring probe 45 and the voltage measuring probe 46 are attached is movable up and down, and the fixing table 11 to which the solar battery unit 10 is fixed is stationary. It is obvious that the mounting frame 50 can be made stationary and the fixed table 11 can be raised and lowered.
針對具有3個表面電極(匯流排條)之6英吋單晶矽太陽電池單元10，使用以下三種特性測量裝置來實際測量I-V特性(電流電壓特性)及P-V特性(功率-電壓特性)，該三種特性測量裝置係：記載於專利文獻1之具有以彈簧賦予勢能之一列排列之複數針狀探針之習知技術之特性測量裝置；具有兩端固定之多股絞合線之第1實施型態之電流測量用探針的特性測量裝置；以及具有僅一端固定之單線之第3實施型態之電流測量用探針的特性測量裝置。表1係顯示其測量條件及測量結果，第6圖係顯示經實際測量之I-V特性及P-V特性。惟，第6圖中，a係顯示藉由習知之特性測量裝置所測量之I-V特性，b係顯示藉由第1實施型態之特性測量裝置所測量之I-V特性，c係顯示藉由第3實施型態之特性測量裝置所測量之I-V特性，d係顯示藉由習知技術之特性測量裝置所測量之P-V特性，e係顯示藉由第1實施型態之特性測量裝置所測量之P-V特性，f係顯示藉由第3實施型態之特性測量裝置所測量之P-V特性。又，表1中之短路電流密度Jsc係將短路電流Isc除以太陽電池單元之發電部分之面積所得之值，而短路電流Isc係將太陽電池單元之輸出端子短路時之流經其端子間電流，而開路電壓Voc係將太陽電池單元之輸出端子開路時之其端子間之電壓，最大輸出Pmax係於短路電流Isc及開路電壓Voc之間之I-V特性之中使電流×電壓成為最大之太陽電池單元之輸出，最大輸出動作電流Ipm係太陽電池單元之輸出成為最大時之電流，最大輸出動作電壓Vpm係太陽電池單元之輸出成為最大時之電壓，曲線因子FF係將最大輸出Pmax除以短路電流Isc及開路電壓Voc之 乘積所得到之值，單元轉換效率Eff係將最大輸出Pmax除以入射至太陽電池單元之單元面積之輻射通量所得之值，放射照度irr係照射光之放射照度，其單位Sun係1Sun=1000W/m2。 For the 6 inch single crystal germanium solar cell unit 10 having three surface electrodes (bus bar), the following three characteristic measuring devices are used to actually measure the IV characteristic (current-voltage characteristic) and the PV characteristic (power-voltage characteristic), which Three characteristic measuring devices are the characteristic measuring devices of the prior art having a plurality of needle probes arranged in one of a series of potential energy provided by a spring; the first embodiment having a plurality of stranded wires fixed at both ends A characteristic measuring device for a current measuring probe of the present state; and a characteristic measuring device for the current measuring probe of the third embodiment having a single wire fixed at one end. Table 1 shows the measurement conditions and measurement results, and Figure 6 shows the measured IV characteristics and PV characteristics. However, in Fig. 6, a shows the IV characteristic measured by the conventional characteristic measuring device, b shows the IV characteristic measured by the characteristic measuring device of the first embodiment, and c shows the third characteristic. The IV characteristic measured by the characteristic measuring device of the implementation type, d is the PV characteristic measured by the characteristic measuring device of the prior art, and the e is the PV characteristic measured by the characteristic measuring device of the first embodiment. And f shows the PV characteristics measured by the characteristic measuring device of the third embodiment. Further, the short-circuit current density Jsc in Table 1 is a value obtained by dividing the short-circuit current Isc by the area of the power-generating portion of the solar battery cell, and the short-circuit current Isc is a current flowing between the terminals when the output terminal of the solar battery cell is short-circuited. And the open circuit voltage Voc is the voltage between the terminals when the output terminal of the solar cell unit is open, and the maximum output Pmax is the solar cell in which the current × voltage is maximized among the IV characteristics between the short circuit current Isc and the open circuit voltage Voc. The output of the unit, the maximum output operating current Ipm is the current when the output of the solar battery unit becomes maximum, the maximum output operating voltage Vpm is the voltage at which the output of the solar battery unit becomes maximum, and the curve factor FF divides the maximum output Pmax by the short-circuit current. The value obtained by the product of Isc and the open circuit voltage Voc, the unit conversion efficiency Eff is the value obtained by dividing the maximum output Pmax by the radiant flux incident on the cell area of the solar cell unit, and the irradiance irr is the irradiance of the irradiated light. The unit Sun is 1Sun=1000W/m 2 .
由表1及第6圖可知，與習知技術之特性測量裝置比起來具有第1實施型態之電流測量用探針之特性測量裝置其單元轉換效率Eff係提升0.827%，而具有第3實施型態之電流測量用探針之特性測量裝置其單元轉換效率Eff係提升1.29%。因此，根據具有本發明之電流測量用探針之特性測量裝置，可將接觸阻抗安定並保持較低，除此之外，由於幾乎不會遮住模擬太陽光之照射，因此可在幾乎不使太陽電池單元之轉換效率低下之情況下進行特性測量。 As can be seen from Table 1 and FIG. 6 , the characteristic measuring device of the current measuring probe according to the first embodiment has a unit conversion efficiency Eff of 0.827%, and has a third embodiment. In the characteristic measuring device for the current measuring probe of the type, the unit conversion efficiency Eff is increased by 1.29%. Therefore, according to the characteristic measuring device having the probe for current measurement of the present invention, the contact resistance can be stabilized and kept low, and besides, since the irradiation of the simulated sunlight is hardly blocked, it can hardly be made. The characteristic measurement is performed under the condition that the conversion efficiency of the solar battery unit is low.
以下所述之實施型態並非例示所有本發明者亦即非限定地顯示所有本發明者，本發明可以其他各種變形 型態及改變型態加以實施。因此本發明之範圍僅由申請專利範圍及其均等範圍來規定。 The embodiments described below are not intended to illustrate all of the inventors, that is, all of the inventors are not limited, and the invention may be variously modified. Types and changes are implemented. The scope of the invention is therefore intended to be limited only by the scope of the claims and their equivalents.
本發明係可應用於具有在於太陽電池單元照射光之狀態下由其集電電極取出電性訊號之特性測量用探針的例如太陽模擬器等之測量機器。 The present invention is applicable to a measuring machine such as a solar simulator or the like having a characteristic measuring probe for taking out an electrical signal from a collecting electrode in a state in which the solar battery unit is irradiated with light.
10‧‧‧太陽電池單元 10‧‧‧Solar battery unit
10a‧‧‧表面電極 10a‧‧‧ surface electrode
11‧‧‧固定台 11‧‧‧ fixed table
12‧‧‧支持構件 12‧‧‧Support components
15‧‧‧電流測量用探針 15‧‧‧Probe for current measurement
16‧‧‧電壓測量用探針 16‧‧‧Voltage measurement probe
17‧‧‧固定支持部 17‧‧‧Fixed Support Department
18‧‧‧連結構件 18‧‧‧Connected components
19‧‧‧安裝框 19‧‧‧Installation box
19a‧‧‧溝 19a‧‧‧ditch
20‧‧‧螺栓 20‧‧‧ bolt
21‧‧‧上下移動構件 21‧‧‧Up and down moving components
22‧‧‧固定柱構件 22‧‧‧Fixed column members
Claims (10)
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| JP6408864B2 (en) * | 2014-10-28 | 2018-10-17 | 日置電機株式会社 | Method and apparatus for measuring characteristics of solar panel |
| CN108206671B (en) * | 2018-02-10 | 2024-04-09 | 泰州隆基乐叶光伏科技有限公司 | MBB solar cell testboard |
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