Group assembling method for lithium-ion drive batteries, and lithium-ion drive battery pack
A technology of a power battery and an assembly method, which is applied in the field of lithium-ion power battery group assembly method and lithium-ion power battery pack, can solve problems such as unfavorable replacement of single cells, increased weight of tin battery packs, and seal damage, and achieves improved safety. performance, light weight, and thermal runaway prevention
Active Publication Date: 2015-05-06
苏州悦钠新能源科技有限公司
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Embodiment 1
[0046] Please refer to Figure 1 to Figure 9 Shown, embodiment one of the present invention is:
[0047] This embodiment completes the group assembly method of the lithium-ion power battery of a 2-ton logistics vehicle. The battery pack has a total voltage of 336V and a total capacity of 166.7Ah. group, including the following steps:
[0048] (1) making single-sided selectively plated with tin (tin plating forms the first conductive region 20 and the second conductive region 21) and has a plurality of elongated holes (the first strip-shaped hole 200 and the second strip-shaped hole 210 , the role of this hole is to pass through the epoxy copper-clad laminate connecting plate 2 for battery tabs, and the connecting plate 2 also has 4 metal strips with threaded holes (the first metal strip 3 and the second metal strip Strip 4, the material of the metal strip is nickel-plated copper, the same below), of which 2 strips (the first metal strip 3) are used for the confluence of the ...
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The invention relates to a group assembling method for lithium-ion drive batteries, and a lithium-ion drive battery pack. An epoxy copperplate, a bus metal strip, a metal plate with two rows of holes, a cuboid metal mesh winding body, an S-shaped nickel plating connecting strap and a plurality of single polymer batteries are assembled into a group, wherein the epoxy copperplate is locally tinned and comprises a plurality of holes; the cuboid metal mesh winding body is formed by winding on silica gel strips; positive tabs and negative tabs of the plurality of single batteries are located on the same side of the formed group; the plurality of positive tabs penetrate through the epoxy copperplate with the holes to be arranged in a same column; the plurality of negative tabs penetrate through the epoxy copperplate with the holes to be arranged in another same column; the tabs are bent into 90 degrees and then are pressed on a tinning zone of the epoxy copperplate; an electric conductor of the metal wire winding body is additionally arranged above the tabs; the electric conductor of the metal mesh winding body is pressed by a heavy-current bus metal plate to ensure the effective current conduction of the batteries in the use procedure, so that the single batteries can be conveniently and rapidly unloaded or exchanged; and the safety of the battery pack is improved.
Description
technical field [0001] The invention relates to the field of lithium-ion power batteries, in particular to a lithium-ion power battery group assembly method and a lithium-ion power battery pack. Background technique [0002] Lithium-ion power batteries have broad application prospects in the field of new energy, such as in the field of electric vehicles, and energy storage fields such as solar energy, wind energy or pumped storage power stations. In the existing lithium-ion power batteries, the lugs are connected in series or parallel by welding methods such as soldering or ultrasonic welding. The high-temperature soldering process has a certain risk of damage to the seal at the tabs of the polymer cell. At the same time, the weight of the battery pack is increased due to the high proportion of tin; the soldering process is not conducive to the replacement of single cells. Different grouping methods and technologies of lithium-ion power batteries will affect the energy dens...
Claims
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IPC IPC(8): H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 张贵萍刘非姚培新黄子欣李振张晓泉李锦运刘志勇张潘毅余潘轩余永杨
Owner 苏州悦钠新能源科技有限公司