Hollow cylindrical battery

Abstract

A hollow cylindrical battery is provided that promotes heat dissipation from the center of the battery. A hollow cylindrical battery has a through-hole 1 that penetrates the center of both bottom surfaces of the battery.

Description

[Technical Field]

[0001] This new patent relates to the shape of the battery. [Background technology]

[0002] With the development of electric vehicles, cylindrical batteries are also being required to have larger housings in order to increase their electrical capacity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent application 2018-507248 published [Patent Document 2] Patent application 2002-226840 Published patent [Patent Document 3] Patent application No. 11-92638 published [Patent Document 4] Patent Application No. 3-326574 Published Patent [Non-patent literature]

[0004] [Non-Patent Document 1] "The Book of Lithium-Ion Batteries" by Katsuo Seki, 2021 [Non-patent document 2] Masashi Kamino "Battery Book" 2019 [Non-patent document 3] Masashi Kanemura, "Lithium-ion Batteries for Hybrid Vehicles," 2015 Summary of the Invention [Problem to be solved by the invention]

[0005] As cylindrical batteries become larger, it becomes more difficult to manage the heat in the center of the battery, which affects the battery's lifespan. [Means for solving the problem]

[0006] This is a new design for a hollow cylindrical battery with through holes that run through the center of both bottom surfaces of the cylindrical battery to facilitate heat management in the center of the battery. [Effects of the Invention]

[0007] In the case of air cooling, the temperature at the center of the battery is optimized by blowing temperature-regulating air through the through-holes of the hollow cylindrical battery, while in the case of liquid cooling, the desired purpose is achieved by circulating temperature-regulating liquid through pipes that pass through the through-holes. In the case of air cooling, it may be possible to install a heat sink in the through hole to improve the effect. [Brief explanation of the drawings]

[0008] [Figure 1] This is a top-down view of the new battery. [Figure 2] This is a view of the new battery from diagonally below. [Figure 3] This is a diagram of the heat sink that is attached to the through hole. [Figure 4] This is a cross section of one of the heat sinks. [Explanation of symbols]

[0009] 1 through hole 2 Positive electrode terminal 3 Negative electrode terminal 4 Battery body

Claims

1. Cylindrical battery with a through-hole that runs through the center of the top and bottom (see Figures 1 and 2)

2. A structure in which a heat sink is installed in the through hole (see Figures 3 and 4).

3. The positive terminal has a structure in which multiple terminals are arranged in a circular ring-shaped area at the top of the battery (see Figure 1).

4. The negative terminal is the annular part at the bottom of the battery (see Figure 2).

Images