WO2022127177A1 - System and method for repairing output power of series solar cell - Google Patents

System and method for repairing output power of series solar cell Download PDF

Info

Publication number
WO2022127177A1
WO2022127177A1 PCT/CN2021/114610 CN2021114610W WO2022127177A1 WO 2022127177 A1 WO2022127177 A1 WO 2022127177A1 CN 2021114610 W CN2021114610 W CN 2021114610W WO 2022127177 A1 WO2022127177 A1 WO 2022127177A1
Authority
WO
WIPO (PCT)
Prior art keywords
series
output power
current density
solar cells
repairing
Prior art date
Application number
PCT/CN2021/114610
Other languages
French (fr)
Chinese (zh)
Inventor
刘家梁
李卫东
肖平
冯笑丹
赵东明
赵志国
秦校军
董超
王百月
Original Assignee
中国华能集团清洁能源技术研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国华能集团清洁能源技术研究院有限公司 filed Critical 中国华能集团清洁能源技术研究院有限公司
Publication of WO2022127177A1 publication Critical patent/WO2022127177A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H02S50/10Testing of PV devices, e.g. of PV modules or single PV cells
    • H02S50/15Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Definitions

  • the invention belongs to the field of solar cells, and in particular relates to a system and method for repairing the output power of serially connected solar cells.
  • the purpose of the present invention is to provide a system and method for repairing the output power of a series solar cell, which solves the above-mentioned deficiencies in the prior art.
  • the invention provides a method for repairing the output power of a series-connected solar cell, comprising a compensation light source controller, wherein the compensation light source controller is used to collect the actual current density output by the sub-cells of each series-connected battery assembly; and calculate the difference between the actual current density and the The difference percentage between the standard current densities corresponding to the sub-cells of the series-connected battery assembly; and then the difference percentage is compared with a preset threshold, and whether to repair the output power of the series-connected solar cell is determined according to the comparison result.
  • the difference percentage is greater than or equal to a preset threshold
  • the output power of the series-connected solar cells is repaired; otherwise, the output power of the series-connected solar cells is kept unchanged.
  • the compensation light source controller is connected with a controllable compensation light source generator for generating light intensity
  • the controllable compensation light source generator is provided with a plurality of controllable compensation light source generators
  • each sub-battery of the series-connected battery assembly is correspondingly provided with a controllable compensation light source generator.
  • Control compensation light source generator is connected with a controllable compensation light source generator for generating light intensity
  • the controllable compensation light source generator is provided with a plurality of controllable compensation light source generators
  • each sub-battery of the series-connected battery assembly is correspondingly provided with a controllable compensation light source generator. Control compensation light source generator.
  • a method for repairing the output power of a series solar cell comprising the following steps:
  • the difference percentage is compared with a preset threshold, and according to the comparison result, it is judged whether to repair the output power of the series-connected solar cells.
  • the difference percentage is greater than or equal to the preset threshold, the output power of the series-connected solar cells is repaired; otherwise, the output power of the series-connected solar cells is kept unchanged.
  • the specific method for repairing the output power of the series-connected solar cells is:
  • the clustered light intensity multiple is calculated by the following formula:
  • X is the concentration multiple of quasi-light concentration
  • is the corresponding reaction coefficient under the concentration intensity of different types of solar cells
  • X standard sunlight intensities is the short-circuit current density of the battery under 1 standard sunlight intensity
  • the corresponding applied light intensity is obtained according to the multiple of the concentrated light intensity; the obtained applied light intensity is applied to the corresponding sub-cells of the series-connected battery module to compensate the short-circuit current of the sub-cells of the series-connected battery module, thereby realizing the solar cell model Group output power fixes.
  • the present invention provides a system and method for repairing the output power of series-connected solar cells.
  • a light source irradiation method Through real-time monitoring of sub-cells of each battery module and adding an external controllable light source, when the battery has a dead point or the efficiency of a single cell is fluctuating , by adding a light source irradiation method, the current compensation is performed on the damaged cells, the reduction effect of the damaged cells on the overall output power is eliminated, the output power of the components is kept stable, and the output power of the final solar cell remains unchanged or increased.
  • the goal of using solar cells to generate electricity with stable and highest efficiency is achieved.
  • FIG. 1 is a schematic diagram of a maximum power repair method of a series solar cell
  • a device for controlling the output power of series-connected solar cells includes a series-connected battery assembly sub-battery 2, a controllable compensation light source generator 3 and a compensation light source controller 4, wherein the compensation light source controller 4 is used to control the series connection.
  • the current density of the battery pack sub-battery 2 is monitored in real time, and a control signal is sent to the controllable compensation light source generator 3; the controllable compensation light source generator 3 is used to generate light intensity, and then control the light source intensity.
  • a controllable compensation light source generator 3 is correspondingly disposed in each sub-cell 2 of the series-connected battery assembly.
  • the controllable compensation light source generator includes a commercial solar simulator and a corresponding output light intensity control system.
  • the present invention relates to a method for repairing the output power of series-connected solar cells, comprising the following steps:
  • the multiplier of the concentrated light intensity is calculated by formula (1), and the output of the controllable compensation light source generator 3 corresponds to the multiplier of the concentrated light intensity.
  • the output voltage remains basically unchanged, which meets the application requirements in the actual application process and ensures the normal operation of the generator set.
  • the repair method of the applied light intensity for the sub-battery is the following formula, wherein the output short-circuit current intensity of the sub-battery and the light intensity satisfy a linear relationship:
  • X is the concentration-like intensity multiple realized by compensating the light source
  • is the corresponding reaction coefficient under the concentration intensity of different types of solar cells (such as monocrystalline silicon cells, perovskite solar cells, etc.); wherein, is the short-circuit current density of the battery under X standard sunlight intensities, is the short-circuit current density of the battery under 1 standard sunlight intensity.
  • the battery open circuit voltage Voc and fill factor FF satisfy the following requirements under different light intensities:
  • X is the intensity multiple of the concentrated light achieved by compensating the light source
  • k is the Boltzmann constant
  • T is the temperature
  • q is the single electron charge.
  • the open-circuit voltage, fill factor and light intensity satisfy the logarithmic relationship, that is, the open-circuit voltage and fill factor will not have a large fluctuation effect on the overall output power of the module under the condition of external light intensity, which ensures the operation of the module. stability of use.
  • the current density I sc standard current density
  • I co the actual current density after decay
  • E ff standard battery output power
  • E co battery output power after attenuation
  • E co /E ff ⁇ I co /I sc by controlling the 4 light source compensators, adjusting the controlled 3 LED light sources, the corresponding compensation current I is generated on the series circuit attenuating sub-battery add (battery current density compensated after adding light intensity), where I add ⁇ I sc -I co , then the battery efficiency can be restored from E co to E ff under the control of the external light source.

Abstract

Provided are a system and method for repairing the output power of a series solar cell. The system comprises a compensated light source controller, wherein the compensated light source controller is used to collect an actual current density output by each series cell module sub-cell, to calculate a difference percentage between the actual current density and a standard current density corresponding to the series cell module sub-cell, to then compare the difference percentage with a preset threshold, and to determine, according to the comparison result, whether to repair the output power of a series solar cell. According to the present invention, on the basis of reducing the module maintenance and replacement costs, the purpose of stably and efficiently using solar cells to generate electricity is achieved.

Description

一种对串联太阳能电池输出功率进行修复的系统及方法A system and method for repairing output power of series-connected solar cells 技术领域technical field
本发明属于太阳能电池领域,具体涉及一种对串联太阳能电池输出功率进行修复的系统及方法。The invention belongs to the field of solar cells, and in particular relates to a system and method for repairing the output power of serially connected solar cells.
背景技术Background technique
由于化石燃料的枯竭与其燃烧所造成的污染,人们亟需一种新型的清洁能源技术来解决目前人类所面临的能源紧缺问题,相比较而言,太阳能由于其储量丰富,材料易得,投资小且无污染而脱颖而出,近年来太阳能电池逐渐走进千家万户的生活。Due to the depletion of fossil fuels and the pollution caused by their combustion, a new type of clean energy technology is urgently needed to solve the current energy shortage problem faced by human beings. And stand out without pollution, in recent years, solar cells have gradually entered the lives of thousands of households.
为了降低生产成本,提高组件整体的光电转换效率,相当部分太阳能电池采用串联结构形成完整结构,然而由于高温或其他外界因素影响,太阳能电池组件中某一子电池易产生坏点等现象导致整个电池组件产生不可逆退化,极大提高了电池的实际成本。In order to reduce the production cost and improve the overall photoelectric conversion efficiency of the module, a considerable part of the solar cell adopts a series structure to form a complete structure. However, due to the influence of high temperature or other external factors, a certain sub-cell in the solar cell module is prone to bad points and other phenomena, resulting in the entire cell. The irreversible degradation of the components greatly increases the actual cost of the battery.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种对串联太阳能电池输出功率进行修复的系统及方法,解决了现有技术中存在的上述不足。The purpose of the present invention is to provide a system and method for repairing the output power of a series solar cell, which solves the above-mentioned deficiencies in the prior art.
为了达到上述目的,本发明采用的技术方案是:In order to achieve the above object, the technical scheme adopted in the present invention is:
本发明提供的一种对串联太阳能电池输出功率进行修复的方法,包括补偿光源控制器,其中,补偿光源控制器用于采集每个串联电池组件子电池输出的实际电流密度;并计算实际电流密度与该串联电池组件子电池对应的标准电流密度之间的差值百分比;进而将该差值百分比与预设阈值进行对比,根据对比结果判断是否进行该串联太阳能电池输出功率的修复。The invention provides a method for repairing the output power of a series-connected solar cell, comprising a compensation light source controller, wherein the compensation light source controller is used to collect the actual current density output by the sub-cells of each series-connected battery assembly; and calculate the difference between the actual current density and the The difference percentage between the standard current densities corresponding to the sub-cells of the series-connected battery assembly; and then the difference percentage is compared with a preset threshold, and whether to repair the output power of the series-connected solar cell is determined according to the comparison result.
优选地,当该差值百分比大于等于预设阈值时,则对该串联太阳能电池的输出功率进行修复;否则,保持该串联太阳能电池的输出功率不变。Preferably, when the difference percentage is greater than or equal to a preset threshold, the output power of the series-connected solar cells is repaired; otherwise, the output power of the series-connected solar cells is kept unchanged.
优选地,所述补偿光源控制器连接有用于产生光强的可控补偿光源产生器,所述可控补偿光源产生器设置有多个,每个所述串联电池组件子电池对应设置有一个可控补偿光源产生器。Preferably, the compensation light source controller is connected with a controllable compensation light source generator for generating light intensity, the controllable compensation light source generator is provided with a plurality of controllable compensation light source generators, and each sub-battery of the series-connected battery assembly is correspondingly provided with a controllable compensation light source generator. Control compensation light source generator.
一种对串联太阳能电池输出功率进行修复的方法,包括以下步骤:A method for repairing the output power of a series solar cell, comprising the following steps:
采集每个串联电池组件子电池输出的实际电流密度;Collect the actual current density output by the sub-cells of each series-connected battery module;
计算实际电流密度与每个串联电池组件子电池对应的标准电流密度之间的差值百分比;Calculate the percentage of difference between the actual current density and the standard current density corresponding to each sub-cell of the series-connected battery assembly;
将该差值百分比与预设阈值进行对比,根据对比结果判断是否进行该串联太阳能电池输出功率的修复。The difference percentage is compared with a preset threshold, and according to the comparison result, it is judged whether to repair the output power of the series-connected solar cells.
优选地,根据对比结果判断是否进行该串联太阳能电池输出功率的修复,具体方法是:Preferably, according to the comparison result, it is judged whether to repair the output power of the solar cell in series, and the specific method is:
当该差值百分比大于等于预设阈值时,对该串联太阳能电池输出功率的修复;否则,保持该串联太阳能电池的输出功率不变。When the difference percentage is greater than or equal to the preset threshold, the output power of the series-connected solar cells is repaired; otherwise, the output power of the series-connected solar cells is kept unchanged.
优选地,当该差值百分比大于等于预设阈值时,对该串联太阳能电池输出功率的修复,具体方法是:Preferably, when the difference percentage is greater than or equal to a preset threshold, the specific method for repairing the output power of the series-connected solar cells is:
通过下式计算类聚光强度倍数:The clustered light intensity multiple is calculated by the following formula:
Figure PCTCN2021114610-appb-000001
Figure PCTCN2021114610-appb-000001
其中,X为类聚光强度倍数;α为不同类型太阳能电池聚光强度下的相应反应系数;其中,
Figure PCTCN2021114610-appb-000002
为X个标准太阳光强下电池短路电流密度,
Figure PCTCN2021114610-appb-000003
为1个标准太阳光强下电池短路电流密度;
Among them, X is the concentration multiple of quasi-light concentration; α is the corresponding reaction coefficient under the concentration intensity of different types of solar cells; among them,
Figure PCTCN2021114610-appb-000002
is the short-circuit current density of the battery under X standard sunlight intensities,
Figure PCTCN2021114610-appb-000003
is the short-circuit current density of the battery under 1 standard sunlight intensity;
根据类聚光强度倍数得到相对应的外加光强;将得到的外加光强作用于对应的串联电池组件子电池,实现对该串联电池组件子电池的短路电流进行补偿,进而实现对太阳能电池模组输出功率的修复。The corresponding applied light intensity is obtained according to the multiple of the concentrated light intensity; the obtained applied light intensity is applied to the corresponding sub-cells of the series-connected battery module to compensate the short-circuit current of the sub-cells of the series-connected battery module, thereby realizing the solar cell model Group output power fixes.
与现有技术相比,本发明的有益效果是:Compared with the prior art, the beneficial effects of the present invention are:
本发明提供的一种对串联太阳能电池输出功率进行修复的系统及方法,通过对每个电池组件子电池 的实时监控并添加外加可控光源,在电池出现坏点或单一电池片出现效率波动时,通过外加光源照射方式,对损坏电池片进行电流补偿,消除损坏电池对整体输出功率的削减作用,使组件输出功率保持稳定,使得最终的太阳能电池的输出功率保持不变或增大,本发明在降低组件维护及更换成本的基础上,达到稳定且最高效率利用太阳能电池发电的目的。The present invention provides a system and method for repairing the output power of series-connected solar cells. Through real-time monitoring of sub-cells of each battery module and adding an external controllable light source, when the battery has a dead point or the efficiency of a single cell is fluctuating , by adding a light source irradiation method, the current compensation is performed on the damaged cells, the reduction effect of the damaged cells on the overall output power is eliminated, the output power of the components is kept stable, and the output power of the final solar cell remains unchanged or increased. On the basis of reducing the maintenance and replacement costs of components, the goal of using solar cells to generate electricity with stable and highest efficiency is achieved.
附图说明Description of drawings
图1为串联太阳能电池最大功率修复方法的示意图;FIG. 1 is a schematic diagram of a maximum power repair method of a series solar cell;
其中,1、太阳光 2、串联电池组件子电池2 3、可控补偿光源产生器3 4、补偿光源控制器。Among them, 1, sunlight 2, series battery assembly sub-cell 2 3, controllable compensation light source generator 3 4, compensation light source controller.
具体实施方式Detailed ways
在描述本发明的实施方案时,为了清楚起见,使用了特定的术语。然而,本发明无意局限于所选择的特定术语。应了解每个特定元件包括类似的方法运行以实现类似目的的所有技术等同物。In describing embodiments of the present invention, specific terminology is used for the sake of clarity. However, the invention is not intended to be limited to the specific terminology so selected. It should be understood that each specific element includes all technical equivalents that operate in a similar manner to accomplish a similar purpose.
下面结合附图对本发明作进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings.
本发明提供的一种用于控制串联太阳能电池输出功率的装置,包括串联电池组件子电池2、可控补偿光源产生器3和补偿光源控制器4,其中,补偿光源控制器4用于对串联电池组件子电池2电流密度进行实时监控,并对可控补偿光源产生器3进行控制信号;所述可控补偿光源产生器3用于产生光强,进而对光源强度进行控制。A device for controlling the output power of series-connected solar cells provided by the present invention includes a series-connected battery assembly sub-battery 2, a controllable compensation light source generator 3 and a compensation light source controller 4, wherein the compensation light source controller 4 is used to control the series connection. The current density of the battery pack sub-battery 2 is monitored in real time, and a control signal is sent to the controllable compensation light source generator 3; the controllable compensation light source generator 3 is used to generate light intensity, and then control the light source intensity.
每个串联电池组件子电池2对应设置有一个可控补偿光源产生器3。A controllable compensation light source generator 3 is correspondingly disposed in each sub-cell 2 of the series-connected battery assembly.
可控补偿光源产生器包括商用太阳光模拟器及相应输出光强控制系统。The controllable compensation light source generator includes a commercial solar simulator and a corresponding output light intensity control system.
本发明涉及的一种对串联太阳能电池输出功率进行修复的方法,包括以下步骤:The present invention relates to a method for repairing the output power of series-connected solar cells, comprising the following steps:
通过补偿光源控制器4实时采集每个串联电池组件子电池2输出的实际电流密度;Real-time acquisition of the actual current density output by the sub-battery 2 of each series-connected battery assembly through the compensation light source controller 4;
计算实际电流密度与每个串联电池组件子电池2对应的标准电流密度之间的差值百分比,之后将该差值百分比与预设阈值进行对比;Calculate the difference percentage between the actual current density and the standard current density corresponding to each series-connected battery assembly sub-cell 2, and then compare the difference percentage with the preset threshold;
当某个串联电池组件子电池2的差值百分比大于等于预设阈值时,通过式(1)计算类聚光强度倍数,并通过可控补偿光源产生器3输出与类聚光强度倍数相对应的外加光强,调节该某个串联电池组件子电池2的短路电流,使其输出的实际电流密度达到标准电流密度,进而实现对光源强度的控制,完成对太阳能电池模组输出功率的调节修复及控制。When the difference percentage of the sub-cells 2 of a series battery assembly is greater than or equal to the preset threshold, the multiplier of the concentrated light intensity is calculated by formula (1), and the output of the controllable compensation light source generator 3 corresponds to the multiplier of the concentrated light intensity. to adjust the short-circuit current of the sub-cell 2 of a certain series battery module, so that the actual output current density reaches the standard current density, thereby realizing the control of the light source intensity, and completing the adjustment and repair of the output power of the solar cell module and control.
其中,通过光强修复方式在提高电路输出电流的同时,输出电压基本保持不变,满足了实际应用过程中的应用要求,保障了发电机组的正常运行。Among them, while increasing the output current of the circuit through the light intensity repair method, the output voltage remains basically unchanged, which meets the application requirements in the actual application process and ensures the normal operation of the generator set.
外加光强对于子电池修复方式为下述公式,其中,子电池输出短路电流强度与光强之间满足线性关系:The repair method of the applied light intensity for the sub-battery is the following formula, wherein the output short-circuit current intensity of the sub-battery and the light intensity satisfy a linear relationship:
Figure PCTCN2021114610-appb-000004
Figure PCTCN2021114610-appb-000004
其中,X为通过补偿光源实现的类聚光强度倍数;α为不同类型太阳能电池(如单晶硅电池、钙钛矿太阳能电池等)聚光强度下的相应反应系数;其中,
Figure PCTCN2021114610-appb-000005
为X个标准太阳光强下电池短路电流密度,
Figure PCTCN2021114610-appb-000006
为1个标准太阳光强下电池短路电流密度。
Among them, X is the concentration-like intensity multiple realized by compensating the light source; α is the corresponding reaction coefficient under the concentration intensity of different types of solar cells (such as monocrystalline silicon cells, perovskite solar cells, etc.); wherein,
Figure PCTCN2021114610-appb-000005
is the short-circuit current density of the battery under X standard sunlight intensities,
Figure PCTCN2021114610-appb-000006
is the short-circuit current density of the battery under 1 standard sunlight intensity.
同时,电池开路电压Voc及填充因子FF在不同光强下满足:At the same time, the battery open circuit voltage Voc and fill factor FF satisfy the following requirements under different light intensities:
Figure PCTCN2021114610-appb-000007
Figure PCTCN2021114610-appb-000007
其中,X为通过补偿光源实现的类聚光强度倍数,
Figure PCTCN2021114610-appb-000008
为X个标准太阳光强下电池开路电压,
Figure PCTCN2021114610-appb-000009
为1标准太阳光强下电池开路电压,k为玻尔兹曼常数,T为温度,q为单电子载荷量。
Among them, X is the intensity multiple of the concentrated light achieved by compensating the light source,
Figure PCTCN2021114610-appb-000008
is the open-circuit voltage of the battery under X standard sunlight intensities,
Figure PCTCN2021114610-appb-000009
is the open circuit voltage of the battery under 1 standard sunlight intensity, k is the Boltzmann constant, T is the temperature, and q is the single electron charge.
在不同光强下,开路电压及填充因子与光强之间满足对数关系,即开路电压及填充因子不会在外加光强情况下对组件整体输出功率产生较大波动影响,保证了组件运行使用的稳定性。Under different light intensities, the open-circuit voltage, fill factor and light intensity satisfy the logarithmic relationship, that is, the open-circuit voltage and fill factor will not have a large fluctuation effect on the overall output power of the module under the condition of external light intensity, which ensures the operation of the module. stability of use.
当串联电路中某节电池发生不可逆衰减时,电池模组电流密度I sc(标准电流密度)下降至I co(衰减后实际电流密度),模组总效率由E ff(标准电池输出功率)下降至E co(衰减后电池输出功率),其中,E co/E ff≈I co/I sc,通过控制4光源补偿器,调节所控制3LED光源,在串联电路衰减子电池上产生相应补偿电流I add(外加光强后所补偿的电池电流密度),其中,I add≈I sc-I co,则电池效率在外加光源控制下,实现由E co向E ff提升的电池功率修复效果。 When a battery in the series circuit decays irreversibly, the current density I sc (standard current density) of the battery module decreases to I co (the actual current density after decay), and the total efficiency of the module decreases from E ff (standard battery output power) To E co (battery output power after attenuation), wherein, E co /E ff ≈I co /I sc , by controlling the 4 light source compensators, adjusting the controlled 3 LED light sources, the corresponding compensation current I is generated on the series circuit attenuating sub-battery add (battery current density compensated after adding light intensity), where I add ≈I sc -I co , then the battery efficiency can be restored from E co to E ff under the control of the external light source.
以上所述实施例仅表达了本发明的一种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下。因此,本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiment only expresses an embodiment of the present invention, and its description is relatively specific and detailed, but it should not be construed as a limitation on the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (6)

  1. 一种对串联太阳能电池输出功率进行修复的系统,其特征在于,包括补偿光源控制器(4),其中,补偿光源控制器(4)用于采集每个串联电池组件子电池(2)输出的实际电流密度;并计算实际电流密度与该串联电池组件子电池(2)对应的标准电流密度之间的差值百分比;进而将该差值百分比与预设阈值进行对比,根据对比结果判断是否进行该串联太阳能电池输出功率的修复。A system for repairing the output power of series-connected solar cells, characterized by comprising a compensation light source controller (4), wherein the compensation light source controller (4) is used to collect the output power of each series-connected battery assembly sub-cell (2) the actual current density; and calculate the difference percentage between the actual current density and the standard current density corresponding to the sub-battery (2) of the series-connected battery assembly; and then compare the difference percentage with the preset threshold, and judge whether to proceed according to the comparison result Repair of the output power of the tandem solar cells.
  2. 根据权利要求1所述的一种对串联太阳能电池输出功率进行修复的系统,其特征在于,当该差值百分比大于等于预设阈值时,则对该串联太阳能电池的输出功率进行修复;否则,保持该串联太阳能电池的输出功率不变。The system for repairing the output power of series-connected solar cells according to claim 1, wherein when the difference percentage is greater than or equal to a preset threshold, repairing the output power of the series-connected solar cells; otherwise, The output power of the tandem solar cells is kept constant.
  3. 根据权利要求1所述的一种对串联太阳能电池输出功率进行修复的系统,其特征在于,所述补偿光源控制器(4)连接有用于产生光强的可控补偿光源产生器(3),所述可控补偿光源产生器(3)设置有多个,每个所述串联电池组件子电池(2)对应设置有一个可控补偿光源产生器(3)。A system for repairing the output power of series-connected solar cells according to claim 1, wherein the compensation light source controller (4) is connected with a controllable compensation light source generator (3) for generating light intensity, There are a plurality of controllable compensation light source generators (3), and each of the series-connected battery assembly sub-cells (2) is correspondingly provided with a controllable compensation light source generator (3).
  4. 一种对串联太阳能电池输出功率进行修复的方法,其特征在于,包括以下步骤:A method for repairing the output power of a series solar cell, characterized in that it comprises the following steps:
    采集每个串联电池组件子电池(2)输出的实际电流密度;Collect the actual current density output by the sub-battery (2) of each series-connected battery assembly;
    计算实际电流密度与每个串联电池组件子电池(2)对应的标准电流密度之间的差值百分比;calculating the percentage difference between the actual current density and the standard current density corresponding to each of the series-connected battery assembly sub-cells (2);
    将该差值百分比与预设阈值进行对比,根据对比结果判断是否进行该串联太阳能电池输出功率的修复。The difference percentage is compared with a preset threshold, and according to the comparison result, it is judged whether to repair the output power of the series-connected solar cells.
  5. 根据权利要求4所述的一种对串联太阳能电池输出功率进行修复的方法,其特征在于,根据对比结果判断是否进行该串联太阳能电池输出功率的修复,具体方法是:A method for repairing the output power of a series-connected solar cell according to claim 4, characterized in that, according to the comparison result, judging whether to repair the output power of the series-connected solar cell, the specific method is:
    当该差值百分比大于等于预设阈值时,对该串联太阳能电池输出功率的修复;否则,保持该串联太阳能电池的输出功率不变。When the difference percentage is greater than or equal to the preset threshold, the output power of the series-connected solar cells is repaired; otherwise, the output power of the series-connected solar cells is kept unchanged.
  6. 根据权利要求5所述的一种对串联太阳能电池输出功率进行修复的方法,其特征在于,当该差值百分比大于等于预设阈值时,对该串联太阳能电池输出功率的修复,具体方法是:The method for repairing the output power of a series-connected solar cell according to claim 5, wherein when the difference percentage is greater than or equal to a preset threshold, repairing the output power of the series-connected solar cell, the specific method is:
    通过下式计算类聚光强度倍数;Calculate the clustered light intensity multiple by the following formula;
    Figure PCTCN2021114610-appb-100001
    Figure PCTCN2021114610-appb-100001
    其中,X为类聚光强度倍数;α为不同类型太阳能电池聚光强度下的相应反应系数;其中,
    Figure PCTCN2021114610-appb-100002
    为X个标准太阳光强下电池短路电流密度,
    Figure PCTCN2021114610-appb-100003
    为1个标准太阳光强下电池短路电流密度;
    Among them, X is the concentration multiple of quasi-light concentration; α is the corresponding reaction coefficient under the concentration intensity of different types of solar cells; among them,
    Figure PCTCN2021114610-appb-100002
    is the short-circuit current density of the battery under X standard sunlight intensities,
    Figure PCTCN2021114610-appb-100003
    is the short-circuit current density of the battery under 1 standard sunlight intensity;
    根据类聚光强度倍数得到相对应的外加光强;将得到的外加光强作用于对应的串联电池组件子电池(2),实现对该串联电池组件子电池(2)的短路电流进行补偿,进而实现对太阳能电池模组输出功率的修复。The corresponding applied light intensity is obtained according to the multiple of the concentrated light intensity; the obtained applied light intensity is applied to the corresponding sub-cell (2) of the series-connected battery assembly, so as to compensate the short-circuit current of the sub-cell (2) of the series-connected battery assembly, In this way, the repair of the output power of the solar cell module is realized.
PCT/CN2021/114610 2020-12-15 2021-08-25 System and method for repairing output power of series solar cell WO2022127177A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011480150.9A CN112636695A (en) 2020-12-15 2020-12-15 System and method for repairing output power of series solar cell
CN202011480150.9 2020-12-15

Publications (1)

Publication Number Publication Date
WO2022127177A1 true WO2022127177A1 (en) 2022-06-23

Family

ID=75313224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/114610 WO2022127177A1 (en) 2020-12-15 2021-08-25 System and method for repairing output power of series solar cell

Country Status (2)

Country Link
CN (1) CN112636695A (en)
WO (1) WO2022127177A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112636695A (en) * 2020-12-15 2021-04-09 华能新能源股份有限公司 System and method for repairing output power of series solar cell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102162619A (en) * 2010-04-28 2011-08-24 张文武 Method and system for integrated utilization of light energy
CN102362360A (en) * 2010-02-19 2012-02-22 欧南芭株式会社 Method for detecting failure of photovoltaic power system
CN106505626A (en) * 2016-12-21 2017-03-15 阳光电源股份有限公司 A kind of photovoltaic inverting system and its PID effect compensation methods and device
CN110557092A (en) * 2019-09-06 2019-12-10 中国计量科学研究院 Irradiance compensation method for photoelectric performance test of solar cell
CN112636695A (en) * 2020-12-15 2021-04-09 华能新能源股份有限公司 System and method for repairing output power of series solar cell

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836272C2 (en) * 1998-08-11 2003-08-07 Astrium Gmbh Flexible, foldable solar generator for spacecraft
TWI326953B (en) * 2006-12-19 2010-07-01 Ind Tech Res Inst Power management apparatus using ambient light source as compensatory power source
CN101976698B (en) * 2009-10-30 2012-04-04 浙江正泰太阳能科技有限公司 Method for positioning and repairing defective cell in I-V curve abnormal solar cell module
CN102928762B (en) * 2012-11-23 2015-08-26 无锡市产品质量监督检验中心 Photovoltaic module hot spot test cell selection equipment
CN103454502A (en) * 2013-08-21 2013-12-18 江苏大学 Method of measuring series internal resistance of photovoltaic cells under any light intensity and any temperature

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102362360A (en) * 2010-02-19 2012-02-22 欧南芭株式会社 Method for detecting failure of photovoltaic power system
CN102162619A (en) * 2010-04-28 2011-08-24 张文武 Method and system for integrated utilization of light energy
CN106505626A (en) * 2016-12-21 2017-03-15 阳光电源股份有限公司 A kind of photovoltaic inverting system and its PID effect compensation methods and device
CN110557092A (en) * 2019-09-06 2019-12-10 中国计量科学研究院 Irradiance compensation method for photoelectric performance test of solar cell
CN112636695A (en) * 2020-12-15 2021-04-09 华能新能源股份有限公司 System and method for repairing output power of series solar cell

Also Published As

Publication number Publication date
CN112636695A (en) 2021-04-09

Similar Documents

Publication Publication Date Title
CN102193027B (en) The power based on model of photovoltaic generating system is estimated
WO2022127177A1 (en) System and method for repairing output power of series solar cell
Shilpa et al. Optimum design of rooftop PV system for an education campus using HOMER
Gupta et al. Smart solar energy management to power computer lab in rural areas
Li et al. The capacity optimization of wind-photovoltaic-thermal energy storage hybrid power system
Gao et al. Design and Simulation of 500kw Wind-solar Complementary Microgrid
Pantelimon et al. Aspects regarding solar battery charge controllers
CN107994611A (en) A kind of method for maintaining photovoltaic plant stable operation
Helać et al. Modeling and the impact on power quality of hybrid solar-wind power plants
CN206894253U (en) A kind of power network intelligent control system based on the energy storage of photovoltaic DC side
Alghassab Performance enhancement of stand-alone photovoltaic systems with household loads
Wenli Research on Energy Storage and Hydrogen Production System of Offshore Wind-solar Hybrid Power Generation Based on 3D Finite Element Method
Mishra et al. Modeling & simulation of a photovoltaic energy system
Tang Research on the Impact of Rooftop Photovoltaic on Reducing Carbon Dioxide Emissions
Hou et al. Optimized wind-light-storage configuration based on Homer pro
Abishek et al. Power Management For Pv-Wind And Hybrid Energy Storage Integrated Micro Grid
Feng et al. Research on joint coordination control of stand-alone wind-solar systems with battery storage
Yan et al. Design of the control strategy for improving the service life of battery in Wind-PV-ES hybrid generation system
Yu et al. Probabilistic Economic and Adequacy Evaluation of the Zero-Carbon Power Systems with CCUS
Achour et al. Modeling and Supervisory Control of Hybrid Renewable Energy Based on Wind-PV-Diesel-Battery
Cao et al. Research on collaborative wind and solar energy storage system based on machine learning
Zhang et al. Control strategy and simulation analysis of wind-solar-storage integrated coupling hydrogen production system
Xu et al. Study on the optimization method of energy storage configuration for new energy
Bagheri-Sanjareh et al. A Novel Two-Stage MMPT Algorithm Under Partial PV Shading Considering the Effect of Shading on Solar Irradiance and PV Temperature
Milenov et al. Design of Photovoltaic plant for research purposes in University of Transport–Sofia

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21905110

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21905110

Country of ref document: EP

Kind code of ref document: A1