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Bipolar battery and method of manufacturing the same

A bipolar battery and manufacturing method technology, applied in secondary battery manufacturing, secondary battery, nano-battery and other directions, can solve the problems of residual air bubbles, inability to fully remove air bubbles, reduce output, etc. excellent effect

Inactive Publication Date: 2008-06-18
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the lamination operation needs to be carefully performed, and even if it is performed carefully, the air bubbles cannot be sufficiently removed and the air bubbles may remain.
If air bubbles remain in such a stacked part, a dead zone where ions cannot pass through and electrons cannot move will be generated in this part, and the output will also be reduced.

Method used

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  • Bipolar battery and method of manufacturing the same
  • Bipolar battery and method of manufacturing the same
  • Bipolar battery and method of manufacturing the same

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0071] 1 is a perspective view showing a bipolar battery 10 according to the first embodiment, FIG. 2 is a cross-sectional view showing main parts of the bipolar battery 10, FIG. 3(A) is a cross-sectional view showing a bipolar electrode 110, and FIG. 3( B) is a cross-sectional view for explaining the unit cell layer 110a, FIGS. A plan view of the main part of the bipolar battery 10 according to the first embodiment including the gap 21, FIG. 6 is a plan view showing a state in which the gap 21 is closed, and FIGS. A cross-sectional view of a state where a gas 30 is mixed with the positive electrode 110 and the electrolyte layer 120 . FIG. 8 is a perspective view illustrating a battery pack 130 using the bipolar battery 10 shown in FIG. 1 , and FIG. 9 is a schematic view of a vehicle 138 equipped with the battery pack 130 shown in FIG. 8 .

[0072] Roughly speaking, the bipolar battery 10 of the first embodiment includes a battery element 100 , a filling portion 20 , and a ve...

no. 2 Embodiment approach

[0167] 25(A) and (B) are plan views showing the filling part 20 of the second embodiment in which the material storage parts 22 and 23 are arranged to face the gap part 21 .

[0168] The second embodiment differs from the first embodiment in that it includes material storage parts 22 and 23 for storing the material supplied to the gap part 21 .

[0169] In the second embodiment, the material storage parts 22 and 23 for storing the material supplied to the gap part 21 to close the gap part 21 are arranged so as to face the gap part 21 in the filling part 20 . The material storage portion 22 of FIG. 25(A) has a rectangular shape, and is disposed facing the gap portion 21 away from the application end portion of the sealing material 114 by several dimensions. On the other hand, the material storage part 23 of FIG. 25(B) has a substantially circular shape, and it is arrange|positioned so that the gap part 21 may be formed in connection with the application|coating end part of the ...

no. 3 Embodiment approach

[0172] 26 is a plan view showing main parts of the bipolar battery 10 according to the third embodiment in which the filled portion 20 includes the uncured portion 24, FIG. 27 is a step diagram for explaining the assembly forming step of the third embodiment, and FIG. 28 29 is a diagram showing the state of heating the fillers 114 and 116 by induction heating, and FIG. 30 is a diagram showing the heating of the fillers 114 and 116 by laser heating. A diagram of the case where heating is performed.

[0173] The third embodiment is different from the first and second embodiments in which the vent portion 32 is constituted by the uncured portion 24 .

[0174] Referring to FIG. 26 , the sealing materials 114 and 116 as the filling material of the third embodiment have thermosetting properties, and the filling part 20 includes an uncured part 24 that communicates with the internal space 31 and the outside, and the gas 30 remaining in the internal space 31 is discharged to the outs...

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Abstract

The present invention provides a bipolar battery which can restrain intermingle of the air bubble and has excellent battery performance and the manufacturing method thereof. The bipolar battery comprises a battery element, a filling part (20) and an air discharging part (32); the battery element is formed by stacking a plurality of bipolar electrodes separating with the electrolyte layer, the bipolar electrode is formed with a positive pole at one surface of the current collector (111) and is formed with a negative pole at the other surface; the filling part (20) is arranged with filling material (114) in the mutual space of the adjacent current collector thereby that the filling material at least surrounds the circumference of the positive pole and the circumference of the negative pole;the air discharging part (32) is arranged on the filling part to discharge the air residual in the inner space surrounded by the current collector, the electrolyte layer and the filling material to the outside of the inner space when stacking the bipolar electrodes.

Description

technical field [0001] The invention relates to a bipolar battery and a manufacturing method thereof. Background technique [0002] A bipolar battery has a structure in which a plurality of bipolar electrodes are stacked with a positive electrode on one side of a current collector and a negative electrode on the other side through an electrolyte layer. For example, Patent Document 1 discloses a A structure in which a plurality of the bipolar electrodes described above are stacked through a separator impregnated with an electrolyte. [0003] When laminating the bipolar electrodes, a current collector having a positive electrode and a negative electrode, and an electrolyte layer (a separator layer that is permeated with an electrolyte and separates the positive electrode and the negative electrode, and a separator layer between the positive electrode or the negative electrode and the separator are provided. Electrolyte layer), but gas (bubbles) may remain due to tiny gaps in ...

Claims

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Application Information

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IPC IPC(8): H01M10/40H01M10/38H01M2/12H01M10/04H01M10/0525H01M10/0565H01M10/0566H01M10/0585
CPCY02E60/122Y02E60/10Y02P70/50H01M10/0418H01M10/0525H01M10/0585H01M10/52H01M2010/0495
Inventor 高山元佐藤一保坂贤司滨田谦二濑川辉夫
Owner NISSAN MOTOR CO LTD
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