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Method for testing and evaluating PID performance of battery assembly

A battery component and performance technology, applied in the field of testing and evaluating the PID performance of battery components, can solve the problems of long test cycle and high test cost

Inactive Publication Date: 2020-12-08
SPIC XIAN SOLAR POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The anti-PID performance of the battery usually needs to be made into components for formal testing to reflect changes in battery performance. On the one hand, the cost of making samples and testing the components is high. long

Method used

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  • Method for testing and evaluating PID performance of battery assembly
  • Method for testing and evaluating PID performance of battery assembly

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Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Such as figure 1 with figure 2 Shown, the method for testing and assessing battery assembly PID performance of the present invention, it comprises the steps:

[0024] (1) A constant voltage source 6 is externally connected to the environmental test chamber 1 to provide voltage, and a ground wire is drawn from the ground terminal to be grounded to the edge of the laminate 2;

[0025] (2) The laminate 2 is wrapped with aluminum foil and placed in an environmental test box, and the lead-out lines 3 and 4 of the laminate are connected to the joints of the constant voltage source 6;

[0026] (3) Connect the short-circuited joint of the laminate to the interface of the constant pressure source. The environmental test chamber operates under high temperature and high humidity conditions (85°C / 85% RH). The laminate is wrapped with aluminum foil, and the layer is given A certain voltage is applied to the pressing piece, and it runs n×96h.

[0027] In this embodiment, the cons...

specific example

[0033] Specific example: Randomly select 2pcs of cells with 23.2% of the mainstream gear of the production line TOPCon and use 0.35mm solder ribbon to realize welding at 175°C, and use glass / POE / battery / POE / glass packaging lamination to complete the preparation of laminates , the system voltage selection is -1500V, the temperature of the environmental test chamber is set to 85°C, and the humidity is set to 85%RH. The laminated parts are wrapped with aluminum foil to complete the circuit connection. After the conditions are stable, the test is performed for 192 hours. Record and compare changes.

[0034] The method for testing and evaluating the PID performance of the battery assembly of the present invention is easy to implement and relatively low in testing cost, but it can effectively evaluate the anti-PID performance of the finished battery.

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Abstract

The invention aims at disclosing a method for testing and evaluating PID performance of a battery assembly, and compared with the prior art, the evaluation method has the advantages that PID testing is carried out on a small laminated piece of a solar battery by using a small environmental test box, and the battery reliability testing is increased. The solar cell process optimization and performance evaluation after material change are realized, the comprehensive evaluation capability of the product is improved, and the risk is reduced; the component risk pre-judgment is realized; the equipment is simple and easy to realize, the test cost is relatively low, the reliability and stability of product performance are effectively supervised, and the purpose of the invention is realized.

Description

technical field [0001] The invention relates to a method for testing and evaluating the PID performance of a battery assembly, in particular to a method for testing and evaluating the PID performance of a battery assembly by modifying a small environmental test chamber. Background technique [0002] With the rapid development of high-efficiency cell technology in the photovoltaic industry, the mass production of P-type PERC, N-type PERT, TOPCon, and IBC cells has accelerated. The superposition of various high-efficiency technologies has greatly improved the efficiency of solar cells, but the reliability behind high efficiency is A topic worth exploring and verifying. [0003] For batteries, passivation is an important direction of technology development. While the battery process is continuously optimized, downstream components put forward new requirements for its reliability. In order to consider the performance of high-efficiency battery components in high-temperature, hig...

Claims

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Application Information

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IPC IPC(8): H02S50/10H02S50/15
CPCH02S50/10H02S50/15Y02E10/50
Inventor 姜倩苗林潘文强雷柳张银环
Owner SPIC XIAN SOLAR POWER CO LTD
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