KR-20260062224-A - HEAT BARRIER UNIT, BATTERY PACK COMPRISING THE SAME AND TRANSFERRING METHOD THE SAME

KR20260062224AKR 20260062224 AKR20260062224 AKR 20260062224AKR-20260062224-A

Abstract

The heat blocking unit of the present invention comprises a heat-resistant pad; and a protective pad provided on one or both sides of the heat-resistant pad, wherein the protective pad comprises a wing portion provided at the end of the heat-resistant pad; and a body portion provided on the heat-resistant pad to which the wing portion is not attached, and at the boundary line between the wing portion and the body portion, one or more folding portions are formed to induce the end of the heat-resistant pad provided with the wing portion to be foldable.

Inventors

권희용
안관혁
고윤오
조영신

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260507
Application Date: 20241028

Claims (14)

Heat-resistant pad; and It includes a protective pad provided on one or both sides of the above heat-resistant pad, The above protective pad is, A wing portion provided at the end of the above heat-resistant pad; and It includes a body portion provided on the heat-resistant pad to which the above wing portion is not attached, and At the boundary line between the wing portion and the body portion, A heat blocking unit having one or more foldable portions formed therein to induce the end of the heat-resistant pad equipped with the wing portion to be foldable.
In claim 1, The above-mentioned folding part is, A heat blocking unit provided with a plurality of folding holes formed at intervals along the above boundary line.
In claim 2, The above folding hole is, Heat blocking units formed at intervals of 2~5mm.
In claim 1, The above-mentioned folding part is, A heat blocking unit provided with a folding groove formed along the above boundary line.
In claim 1, The above-mentioned folding part is provided in two pieces, and Two folds are heat blocking units located parallel to the boundary line.
In claim 1, A heat blocking unit having an adhesive layer between the heat-resistant pad and the protective pad.
In claim 1, A heat blocking unit configured such that the end of the heat-resistant pad protrudes further outward than the end of the protective pad.
In claim 1, A heat blocking unit configured such that the thickness of the heat-resistant pad is thicker than the thickness of the protective pad.
In claim 1, The material of the above heat-resistant pad is a heat-blocking unit made of flexible silicone.
In claim 1, The material of the above protective pad is a heat-blocking unit made of flexible polyethylene terephthalate.
Multiple secondary batteries; A pack case having an internal space for loading multiple secondary batteries; A pack cover that is coupled to the pack case and seals the internal space; and A battery pack comprising a heat blocking unit disposed between a secondary battery loaded in the pack case and the secondary battery, provided according to claim 1 above.
In claim 11, A battery pack in which the end of the heat-resistant pad protrudes further outward than the end of the protective pad and is supported on the inner wall of the pack case and the inner surface of the pack cover.
A method for transporting a heat-blocking unit, comprising transporting a heat-blocking unit provided according to claim 1, (a) A step of stacking the above-mentioned heat blocking units in a magazine in multiple layers; (b) lowering an adsorber equipped with a plurality of adsorbent parts at a first speed to adsorb a heat blocking unit located at the top of the magazine, wherein the plurality of adsorbent parts each adsorb a wing part and a body part provided on a protective pad of the heat blocking unit; (c) raising the adsorber at a second speed to discharge the heat blocking unit located at the top of the magazine out of the magazine, and simultaneously, the heat blocking unit rising together with the heat blocking unit located at the top automatically falls as the end of the heat-resistant pad, to which the wing portion is attached based on the folding portion, folds under load; and (d) A method for transferring a heat blocking unit, comprising the step of transferring an adsorber with an adsorbed heat blocking unit located at the top to a set position.
In claim 13, The above second speed is a heat blocking unit transfer method that is equal to or faster than the above first speed.

Description

Heat barrier unit, battery pack comprising the same, and method of transporting the same The present invention relates to a heat blocking unit, a battery pack including the same, and a method for transporting the same. In particular, the present invention relates to a heat blocking unit having a structure capable of preventing two or more sheets from being transported overlapping, a battery pack including the same, and a method for transporting the same. Generally, a secondary battery refers to a battery that can be charged and discharged, unlike a primary battery which cannot be recharged. Such secondary batteries are widely used in phones, laptop computers, camcorders, power storage devices, and electric vehicles. The above-described secondary battery is classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch, and the pouch-type secondary battery includes an electrode assembly in which electrodes and separators are alternately stacked, and a pouch that accommodates the electrode assembly. Meanwhile, with the recent rise in concern over the depletion of fossil fuels and environmental pollution, research on hybrid and electric vehicles is actively underway, and these vehicles are equipped with battery packs. In other words, the battery pack contains multiple secondary batteries, and these multiple secondary batteries are connected in series or parallel to increase capacity and output. However, the above battery pack had a problem in that performance degradation occurred when one or more of the multiple secondary batteries overheated. In particular, there was a problem in that the heat from the overheated secondary battery propagated to other secondary batteries, significantly degrading the performance of the battery pack. To solve this problem, a pad is inserted between the secondary batteries to prevent heat propagation. Specifically, the heat blocking pad is inserted between the secondary batteries while being transported via a transfer device during the battery pack manufacturing process. However, there was a problem in that two or more heat propagation blocking pads were transported during the transport process of the above heat blocking pads, and consequently, there was a problem in that two or more heat propagation blocking pads were inserted between the secondary batteries. FIG. 1 is a perspective view illustrating a heat blocking unit according to a first embodiment of the present invention. FIG. 2 is a plan view illustrating a heat blocking unit according to a first embodiment of the present invention. FIG. 3 is a cross-sectional view along line AA shown in FIG. 1. Figure 4 is an enlarged view of section B shown in Figure 1. FIG. 5 is a side view illustrating the folded state of a heat blocking unit according to a first embodiment of the present invention. FIG. 6 is a drawing showing the transfer state of a heat blocking unit according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view illustrating a battery pack according to a second embodiment of the present invention. FIG. 8 is a flowchart showing a method for transferring a heat blocking unit according to a third embodiment of the present invention. FIG. 9 is a process diagram showing (a) the heat blocking unit loading step. FIG. 10 is a process diagram showing (b) the adsorption step of the heat blocking unit. FIG. 11 is a process diagram showing (c) the heat blocking unit discharge step. FIG. 12 is a process diagram showing (d) the heat blocking unit transfer step. FIG. 13 is a cross-sectional view illustrating a heat blocking unit according to a fourth embodiment of the present invention. FIG. 14 is an enlarged view of section C shown in FIG. 13. FIG. 15 is a cross-sectional view illustrating a battery pack with the heat blocking unit of FIG. 13 arranged therein. FIG. 16 is a perspective view illustrating a heat blocking unit according to a fifth embodiment of the present invention. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals. [Heat blocking unit according to the first embodiment of the present invention] The heat blocking unit according to the first embodiment of the present invention is characterized by a structure in which both ends can be naturally folded by a load. Due to this characteristic, when two or more heat blocking units are raised in an overlapping state, both ends of the heat blo