Secondary battery and assembled battery
A technology for secondary batteries and assembled batteries, which is applied in the directions of secondary batteries, large-sized batteries/batteries, and small-sized batteries/batteries, etc. less effect
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no. 1 Embodiment approach
[0038] figure 1 , figure 2 It is an exploded perspective view of the lithium ion secondary battery according to the first embodiment of the present invention. image 3 It is an overall perspective view of the lithium ion secondary battery according to the first embodiment of the present invention. Figure 4 It is a plan view of the lithium ion secondary battery according to the first embodiment of the present invention. Figure 5 to Figure 13 It is a figure for demonstrating the lithium ion secondary battery of 1st Embodiment of this invention. It should be noted that, in Figure 4 In , in order to understand the inside of the lithium ion secondary battery, the state after the sealing plate 80 provided originally is removed is shown.
[0039] Such as Figure 1 to Figure 4 As shown, the lithium ion secondary battery 100 of the first embodiment has a square flat shape (refer to image 3 ), and has a positive electrode 10 (refer to figure 1 ) and negative electrode 20 (re...
no. 2 Embodiment approach
[0102] Figure 14 It is a front sectional view of an assembled battery according to a second embodiment of the present invention. It should be noted that, in Figure 14 The configuration inside the battery, such as the electrode group, is omitted. The assembled battery 200 is a battery obtained by stacking four lithium ion secondary batteries 100 according to the first embodiment so as to substantially fit the outer bottom surface 71 a and the outer top surface 81 a , and appropriately connecting the electrode terminals 74 . In addition, the number of lithium-ion secondary batteries 100 which comprise an assembled battery is not specifically limited, What is necessary is just to be 2 or more.
[0103] As described above, the outer top surface 81a of the concave portion forming the sealing body 80 has a substantially rectangular shape slightly larger than the outer bottom surface 71a. Therefore, when the lithium ion secondary batteries 100 are stacked up and down, they can be...
no. 3 Embodiment approach
[0106] Figure 15 It is a front sectional view of an assembled battery according to a third embodiment of the present invention. It should be noted that, in Figure 15 The configuration inside the battery, such as the electrode group, is omitted. The assembled battery 210 of the third embodiment is the assembled battery 200 of the second embodiment in which the damping member 211 is provided between the respective lithium ion secondary batteries 100 .
[0107] The shock absorbing member 211 is clamped between the outer bottom surface 71a of the outer packaging can 70 and the outer top surface 81a of the sealing plate 80, as long as it does not hinder the fitting between the lithium-ion secondary batteries 100, any shape and number can be used. For example, in Figure 15 Among them, the four corners of the fitting part are provided with shock absorbing members 211 respectively. As a material of the shock absorbing member 211, resin or rubber is preferably used.
[0108] Ac...
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Abstract
Description
Claims
Application Information
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