Battery Core Module

Abstract

The battery core module according to the present invention includes a battery unit and an impact prevention part. The battery unit includes a battery body, a first electrode, a second electrode, and an overheat prevention element, the battery body has an end portion, the first electrode, the second electrode, and the overheat prevention element of the battery unit are disposed at the end portion of the battery body, and the overheat prevention element is connected to the first electrode. The impact prevention part includes a first sheet and a second sheet, the end portion of the battery unit, a part of the first electrode, a part of the second electrode, and the overheat prevention element of the battery unit are provided between the first sheet and the second sheet, and the first sheet and the second sheet are clamped and fixed to each other.

Description

[Technical Field]

[0001] The present invention relates to a battery core module, and more particularly to a battery core module including an overheating prevention element.This application claims priority to Korean Patent Application No. 10-2022-0160260 filed on November 25, 2022, and Korean Patent Application No. 10-2023-0059816 filed on May 9, 2023, the entire contents of which are incorporated herein by reference in their entirety. [Background technology]

[0002] Battery assemblies for electronic products (e.g., laptops, tablets, etc.) typically incorporate a battery core module. To pass impact / drop tests for electronic products, the positive and negative electrodes and overheat protection elements on the edges of the battery core module must be cushioned and protected. Conventional electronic products surround the positive and negative electrodes with insulating paper and protect the overheat protection element and the positive electrode adjacent to the overheat protection element with foam. However, this method makes it difficult to protect the negative electrode with the foam, and assembly is cumbersome and inconvenient. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION An object of the present invention is to provide a battery core module that can effectively protect a positive electrode, a negative electrode, and an overheat protection element with a simple structure. [Means for solving the problem]

[0004] A battery core module according to the present invention includes a battery unit and an anti-collision structure. The battery unit includes a battery body, a first electrode, a second electrode, and an overheating prevention element. The battery body has an end portion, the first electrode, the second electrode, and the overheating prevention element of the battery unit are disposed at the end portion of the battery body, and the overheating prevention element of the battery unit is connected to the first electrode of the battery unit. The anti-collision structure includes a first sheet and a second sheet, the end portion of the battery body, a portion of the first electrode, a portion of the second electrode, and the overheating prevention element of the battery unit are disposed between the first sheet and the second sheet, and the first sheet and the second sheet are clamped to each other.

[0005] In one aspect of the present invention, the first sheet has a folded portion to form an accommodating space, and the overheat protection element is located within the accommodating space.

[0006] In one embodiment of the present invention, the material of the first sheet and the second sheet is an insulating material.

[0007] In one aspect of the present invention, the first sheet has at least one clamp hole, the second sheet has at least one clamp pillar, and the at least one clamp pillar is clamped to the at least one clamp hole.

[0008] In one aspect of the present invention, the first electrode includes a first conductive element and a second conductive element, the first conductive element is connected between one end of the overheating prevention element and the battery body, the second conductive element is connected to the other end of the overheating prevention element, and a portion of the first conductive element and a portion of the second conductive element are arranged between the first sheet and the second sheet.

[0009] In one embodiment of the present invention, the first conductive element extends on the first sheet in a bent shape.

[0010] The material of the first sheet may be thermoplastic polyurethane (TPU).

[0011] The first conductive element may be bent so as to extend onto the first sheet with respect to a side surface of the first sheet.

[0012] The tip of the clamp pillar may include a sloped shape. [Effects of the Invention]

[0013] As described above, the battery core module of the present invention uses the first and second sheets clamped together, with the first and second electrodes and the overheat protection element disposed therebetween, thereby effectively protecting the first and second electrodes and the overheat protection element, and since the first and second sheets are fixed to the ends of the battery core module by the clamping force after being clamped together, assembly is very simple. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a partial perspective view of a battery core module according to an embodiment of the present invention; [Figure 2] FIG. 2 is a partial front view of the battery core module of FIG. 1. [Figure 3] 2 is a view showing the first conductive element of FIG. 1 in an unfolded state; [Figure 4] FIG. 4 is a partial top view of a partial element of the battery core module of FIG. 3. [Figure 5] FIG. 3 is a partially enlarged view of the impact prevention part of FIG. 2. [Figure 6] FIG. 6 is a cross-sectional view of the impact prevention part of FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0015] FIG. 1 is a partial perspective view of a battery core module according to one embodiment of the present invention. FIG. 2 is a partial front view of the battery core module of FIG. 1. Referring to FIGS. 1 and 2, a battery core module 100 according to this embodiment includes a battery unit 110 and an impact prevention part 120. The battery unit 110 includes a battery body 112, a first electrode 114 (e.g., a positive electrode), a second electrode 116 (e.g., a negative electrode), and an overheat protection element (thermal cut-off: TCO) 118. The battery body 112 has an end 1121, and the first electrode 114, the second electrode 116, and the overheat protection element 118 are disposed at the end 1121, and the overheat protection element 118 is connected to the first electrode 114.

[0016] The shock prevention part 120 includes a first sheet 122 and a second sheet 124. An end 1121 of the battery body 112, a portion of the first electrode 114, a portion of the second electrode 116, and the overheat prevention element 118 are disposed between the first sheet 122 and the second sheet 124, and the first sheet 122 and the second sheet 124 are clamped to each other.

[0017] As described above, the battery core module 100 according to this embodiment uses the first sheet 122 and the second sheet 124 that are clamped together, with the first electrode 114, the second electrode 116, and the overheat protection element 118 disposed therebetween. This provides adequate protection for the first electrode 114, the second electrode 116, and the overheat protection element 118, and simplifies assembly because the first sheet 122 and the second sheet 124 are fixed to the end 1121 of the battery core module 100 by the clamping force applied to the end 1121 after being clamped together.

[0018] In this embodiment, the first sheet 122 has a folded portion 122a to form an accommodating space, and the overheat protection element 118 is located within the accommodating space. The first sheet 122 and the second sheet 124 are made of an insulating material such as plastic. For example, the first sheet 122 and / or the second sheet 124 may be made of a thermoplastic polyurethane (TPU) material. Alternatively, the first sheet 122 may be made of TPU and the second sheet 124 may be made of a plastic other than TPU. Because TPU is a plastic with rubber-like elasticity, making the first sheet 122 out of TPU makes it easier to press and clamp the first sheet 122 against the second sheet 124.

[0019] FIG. 3 is a diagram illustrating the first conductive element of FIG. 1 in an unbent state. FIG. 4 is a partial top view of a partial element of the battery core module of FIG. 3. Referring to FIGS. 1 to 4, the first electrode 114 according to this embodiment includes a first conductive element 1141 and a second conductive element 1142. The first conductive element 1141 is connected between one end of the overheat protection element 118 and the battery body 112, and the first conductive element 1141 is connected to the battery body 112 by welding or the like. The second conductive element 1142 is connected to the other end of the overheat protection element 118. A portion of the first conductive element 1141 and a portion of the second conductive element 1142 are disposed between the first sheet 122 and the second sheet 124. As shown in FIG. 1, the first conductive element 1141 extends on the first sheet 122 in a bent shape. When the battery core module 100 is installed in the electronic product, the battery core module 100 is connected to a corresponding printed circuit board (PCB) in the electronic product via the second conductive element 1142 and the second electrode 116. The first conductive element 1141 is installed between the first sheet 122 and the second sheet 124 in an unfolded state, and can be folded to extend over the first sheet 122 after welding. When folding, the first conductive element 1141 can be folded based on the side surface of the first sheet 122, in other words, folded at a portion where the side surface of the first sheet 122 and the first conductive element 1141 are aligned, allowing for more accurate and safe folding.

[0020] FIG. 5 is a partially enlarged view of the shock prevention part of FIG. 2. FIG. 6 is a cross-sectional view of the shock prevention part of FIG. 5. Referring to FIGS. 5 and 6, in this embodiment, the first sheet 122 has at least one clamp hole 1221, and the second sheet 124 has at least one clamp pillar 1241. The clamp pillar 1241 is clamped to the clamp hole 1221 to secure the first sheet 122 and the second sheet 124 to each other. The tip of the clamp pillar 1241 has an inclined shape, which makes it easy to insert into the clamp hole 1221 of the first sheet 122 from bottom to top and makes it difficult to remove from the clamped state from top to bottom after insertion, thereby maintaining the clamped state. In other embodiments, the first sheet 122 and the second sheet 124 can be clamped to each other using other structures, and the present invention is not limited thereto.

[0021] As described above, the battery core module according to the present invention has the first electrode, the second electrode, and the overheat protection element disposed between the first and second sheets clamped together, thereby providing adequate protection for the first electrode, the second electrode, and the overheat protection element, and since the first and second sheets are clamped together and then fixed to the ends of the battery core module by the clamping force applied to the ends, assembly is very simple. [Explanation of symbols]

[0022] 100: Battery core module 110: Battery unit 112: Battery body 1121:End 114: 1st electrode 1141: First conductive element 1142: Second conductive element 116:Second electrode 118: Overheat prevention element 120: Shock prevention part 122: First sheet 1221: Clamp hole 122a: Bending part 124: Second sheet 1241: Clamp pillar

Claims

1. A battery unit including a sheet-shaped battery body (112), a first electrode, a second electrode, and an overheat prevention element, wherein the battery body has an end portion, the first electrode, the second electrode, and the overheat prevention element are disposed at the end portion of the battery body, and the overheat prevention element is connected to the first electrode; an impact prevention part including a first sheet and a second sheet, wherein the end of the battery body, a portion of the first electrode of the battery unit, a portion of the second electrode, and the overheat prevention element are disposed between the first sheet and the second sheet, and the first sheet and the second sheet are clamped and fixed to each other; A battery core module comprising: A battery core module, wherein the material of the first sheet and the second sheet is an insulating material.

2. The battery core module according to claim 1 , wherein the first sheet has a folded portion to form an accommodating space, and the overheat protection element is located in the accommodating space.

3. 2. The battery core module according to claim 1, wherein the first sheet has at least one clamp hole, the second sheet has at least one clamp pillar, and the at least one clamp pillar is clamped and fixed to the at least one clamp hole.

4. the first electrode includes a first conductive element and a second conductive element; the first conductive element is connected between one end of the overheat protection element and the battery body; the second conductive element is connected to the other end of the overheat protection element; The battery core module according to claim 1 , wherein a portion of the first conductive element and a portion of the second conductive element are provided between the first sheet and the second sheet.

5. The battery core module according to claim 4 , wherein the first conductive element extends on the first sheet in a bent shape.

6. 2. The battery core module according to claim 1, wherein the material of the first sheet is thermoplastic polyurethane (TPU).

7. The battery core module according to claim 4 , wherein the first conductive element is bent so as to extend onto the first sheet with respect to a side surface of the first sheet.

8. The battery core module according to claim 3 , wherein the tip of the clamp pillar includes an inclined shape.

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