Cell pack and power storage unit including plurality of same
一种组电池、电池的技术，应用在组电池领域，能够解决漏气、电池作动不良等问题，达到抑制电池性能的降低、优异速率特性及循环特性、实现放热的效果
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[0268] As the positive electrode active material used in the positive electrode of Manufacturing Example 1, spinel-type lithium manganate (Li 1.1 Al 0.1 mn 1.8 o 4 ).
[0269] Spinel-type lithium manganese oxide (Li 1.1 Al 0.1 mn 1.8 o 4 ), the conductive auxiliary material (acetylene black) and the solid content concentration of the binder (PVdF) are respectively 100 parts by weight, 5 parts by weight and 5 parts by weight of a mixture of slurry. At this time, the binder used was an N-methyl-2-pyrrolidone (NMP) solution adjusted to a solid content concentration of 5 wt%. In order to facilitate the coating described later, NMP was further added to measure the viscosity Adjustment.
[0270] After applying this slurry to an aluminum foil (15 μm), it was dried to remove the solvent. A positive electrode was fabricated by implementing the above steps on both sides of the aluminum foil.
[0271] (Manufacturing example of negative electrode)
[0272] As the negative elect...
Embodiment 1
[0279] (Example 1: Manufacturing example of assembled battery)
[0280] Created using the method described below Figure 12 battery pack shown.
[0281] First, if Figure 4 As shown, the above-mentioned laminated batteries 2 are arranged vertically and horizontally to the stacking direction of the laminated body, that is, two of the above-mentioned laminated batteries 2 are arranged in the stacked layer of the laminated body, and on one main surface 36 thereof The positive electrode terminals 5a were electrically connected to each other, and the negative electrode terminals 5b were electrically connected to each other on the other main surface, thereby producing a laminated battery primary assembly 35 in which one series and two parallels were connected.
[0282] It should be noted that, in this embodiment, in order to maintain the shape of the laminated battery primary assembly 35, as Figure 4 As shown, using a polypropylene plate (25 cm in length, 30 cm in width, and 0.1...
Embodiment 2
[0286] (Example 2: Manufacturing Example of Electric Storage Unit)
[0287] Next, the battery pack 1f prepared in Example 1 was arranged in three rows in the horizontal direction (the first row is divided into four stages in the vertical direction, and the second and third rows are divided into three stages in the vertical direction), thereby producing An electric storage unit 100a in which ten assembled batteries 1f are electrically connected in series. Figure 13 It is a schematic diagram of the above-mentioned electric storage unit 100a.
[0288] The above-mentioned electric storage unit 100a is an electric storage unit in which 100 laminated batteries 2 connected in parallel are connected in series, and is also an electric storage unit in which ten assembled batteries 1f of the present invention are connected in series. Such electric storage cells 100a are also referred to as "100 series and 2 parallel" on the basis of laminated batteries.
[0289] Therefore, the above-m...
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