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Series connection method of double-sided batteries

A technology of double-sided battery and series connection method, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., to achieve the effect of increasing the speed of series connection, improving yield rate and increasing production capacity

Pending Publication Date: 2022-02-11
CHANGZHOU SHICHUANG ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fronts of the double-sided cells in the existing double-sided modules are all facing the same direction. For example, when laying battery strings, the fronts of the double-sided cells are all facing upwards; The top surface of the double-sided battery is connected to the bottom surface of the adjacent double-sided battery through a connector (such as a ribbon), that is, the connector needs to be bent from the top surface of the double-sided battery to the bottom surface of the adjacent double-sided battery. At the bend, the connection Parts contact with the edge of the double-sided cell to form a large stress, which will have many adverse effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The invention provides a method for connecting double-sided batteries in series, comprising the following steps:

[0017] Step A1):

[0018] Lay down the connecting piece horizontally along the left and right direction; then perform step A2);

[0019] Step A2):

[0020] Place the double-sided battery facing up on the lower connecting piece placed in step A1), so that the bottom surface of the double-sided battery is electrically connected to the lower connecting piece, so that the right end of the lower connecting piece is located on the right side of the double-sided battery. side; on the top surface of the double-sided battery, place the upper connecting piece horizontally along the left and right direction, so that the upper connecting piece is electrically connected to the top surface of the double-sided battery;

[0021] If the left side of the double-sided battery placed in step A2) is not placed flat on the adjacent double-sided battery, then the upper connecto...

Embodiment 2

[0031] The present invention also provides another method for connecting double-sided batteries in series, which includes the following steps:

[0032] Step B1):

[0033] Lay down the connecting piece horizontally along the left and right direction; then perform step B2);

[0034] Step B2):

[0035] Place the double-sided battery with the back facing up on the lower connecting piece placed in step B1), so that the bottom surface of the double-sided battery is electrically connected to the lower connecting piece, so that the right end of the lower connecting piece is located on the right side of the double-sided battery. side; on the top surface of the double-sided battery, place the upper connecting piece horizontally along the left and right direction, so that the upper connecting piece is electrically connected to the top surface of the double-sided battery;

[0036] If there is no adjacent double-sided battery on the left side of the double-sided battery placed in step B2...

Embodiment 3

[0046] The present invention also provides another method for connecting double-sided batteries in series, which includes the following steps:

[0047] Step C1):

[0048] The lower connecting piece is placed horizontally along the left and right directions. The lower connecting piece is used as the lead wire at the left end of the battery string. The double-sided battery facing upward is placed flat on the lower connecting piece, so that the bottom surface of the double-sided battery is electrically connected to the lower connecting piece. connect; then execute step C2);

[0049] Step C2):

[0050] The lower connector laid flat along the left-right direction, so that the lower connector is located on the right side of all the connectors that have been laid flat and all the double-sided batteries that have been laid flat; The bottom surface of the double-sided battery is electrically connected to the lower connector, the right end of the lower connector is located on the righ...

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PUM

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Abstract

The invention discloses a series connection method of double-sided batteries, which comprises the following steps of: a plurality of double-sided batteries are sequentially connected in series to form a battery string, so that two adjacent double-sided batteries are respectively provided with upward front surfaces and upward back surfaces, and the double-sided batteries with the upward front surfaces and the double-sided batteries with the upward back surfaces are alternately arranged along the extending direction of the battery string; and the top surfaces or the bottom surfaces of the two adjacent double-sided batteries are electrically connected by using a connecting piece. According to the invention, the tandem connection speed of the double-sided battery can be improved, the productivity of the battery string and the assembly can be improved, the yield of the battery string and the assembly can be improved, and the unit manufacturing cost can be reduced. During series connection, an upper connecting piece and a lower connecting piece do not need to be connected to the bottom surface of the adjacent double-sided battery from the top surface of the double-sided battery, and the upper connecting piece and the lower connecting piece are straightly connected and do not need to be bent in the middle, so that no protruding stress point exists, the development of module thinning is facilitated, and an implementation method is provided for battery thinning.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a method for connecting double-sided batteries in series. Background technique [0002] Crystalline silicon solar cells are made into photovoltaic modules through series connection and lamination packaging. The welding of cells in series is a major process. The series connection of cells directly affects the performance of the modules and the production speed of the modules. [0003] With the development of photovoltaic technology at any time, there have been double-sided cells that can generate electricity by receiving light from the front and back sides. Modules made of double-sided cells are called double-sided modules. However, the fronts of the double-sided cells in the existing double-sided modules are all facing the same direction. For example, when laying battery strings, the fronts of the double-sided cells are all facing upwards; The top surface of the double-sided battery...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/05H01L31/0475
CPCH01L31/0504H01L31/1876H01L31/0475Y02E10/50Y02P70/50
Inventor 陈章洋王伟亮曹育红
Owner CHANGZHOU SHICHUANG ENERGY CO LTD
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