EP-4738596-A1 - BATTERY CORE MODULE

EP4738596A1EP 4738596 A1EP4738596 A1EP 4738596A1EP-4738596-A1

Abstract

The present disclosure relates to a battery core module including a battery unit and an electrical connection assembly. The battery unit includes a battery body, a first electrode, and a second electrode, wherein the battery body has an end and wherein the first electrode and the second electrode are disposed at the end. The electrical connection assembly is disposed at the end and includes a first conductive component, a second conductive component, a third conductive component, a thermal cut-off element, and an insulating adhesive. The insulating adhesive wraps a portion of the first conductive component, a portion of the second conductive component, and a portion of the third conductive component, and the thermal cut-off element is connected between the second conductive component and the third conductive component. The first conductive component is connected to the first electrode, and the second conductive component is connected to the second electrode.

Inventors

HUANG, CHIEN-PIN

Assignees

LG Energy Solution, Ltd.

Dates

Publication Date: 20260506
Application Date: 20240626

Claims (10)

A battery core module comprising: a battery unit comprising a battery body, a first electrode, and a second electrode, wherein the battery body has an end and wherein the first electrode and the second electrode are disposed at the end; and an electrical connection assembly disposed at the end and comprising a first conductive component, a second conductive component, a third conductive component, a thermal cut-off element, and an insulating adhesive, wherein the insulating adhesive wraps a portion of the first conductive component, a portion of the second conductive component, and a portion of the third conductive component, wherein the thermal cut-off element is connected between the second conductive component and the third conductive component, wherein the first conductive component is connected to the first electrode, and wherein the second conductive component is connected to the second electrode.
The battery core module according to claim 1, wherein the insulating adhesive is coupled to the first conductive component, the second conductive component, and the third conductive component through insert-injection molding.
The battery core module according to claim 1, wherein the insulating adhesive has two openings, and wherein a local portion of the first conductive component and a local portion of the second conductive component are respectively exposed through the two openings so as to be connected to the first electrode and the second electrode, respectively.
The battery core module according to claim 1, wherein the insulating adhesive has two openings, and wherein a local portion of the second conductive component and a local portion of the third conductive component are respectively exposed through the two openings so as to be connected to both ends of the thermal cut-off element, respectively.
The battery core module according to claim 1, wherein a distal end of the first conductive component and a distal end of the third conductive component protrude and extend from the insulating adhesive.
The battery core module according to claim 5, wherein the first electrode extends to be folded onto the electrical connection assembly and is connected to the first conductive component, and wherein the second electrode extends to be folded onto the electrical connection assembly and is connected to the second conductive component.
The battery core module according to claim 1, wherein the battery core module is installed inside an electronic product, wherein a distal end of the first conductive component and a distal end of the third conductive component are connected to a circuit board of the electronic product, wherein the first electrode is connected to the circuit board through the first conductive component, and wherein the second electrode is connected to the circuit board through the second conductive component, the thermal cut-off element, and the third conductive component.
The battery core module according to claim 1, wherein the insulating adhesive is configured to wrap a portion of the first conductive component, a portion of the second conductive component, and a portion of the third element, and wherein the thermal cut-off element is connected between the second conductive component and the third conductive component.
The battery core module according to claim 1, wherein the insulating adhesive is coupled to the first conductive component, the second conductive component, and the third conductive component, and wherein the thermal cut-off element is connected to the second conductive component and the third conductive component through laser welding.
The battery core module according to claim 1, wherein the first conductive component, the second conductive component, the third conductive component, the thermal cut-off element, and the insulating adhesive are preferentially formed into the electrical connection assembly, and then installed together at the end of the battery body.

Description

TECHNICAL FIELD The present disclosure relates to a battery core module and, more particularly, to a battery core module including a thermal cut-off element. The present application claims priority to Korean Patent Application No. 10-2023-0145119 filed on October 26, 2023 in the Republic of Korea, the disclosures of which are incorporated herein by reference. BACKGROUND ART A battery assembly of electronic products (e.g., laptops, tablets, or the like) usually includes a battery core module therein. In order to pass the shock/drop test of electronic products, buffering and protection measures are required for a positive electrode, a negative electrode, and a thermal cut-off element on the end of the battery core module. In conventional electronic products, insulating paper is used to wrap the positive electrode and negative electrode, and foam is used to protect the thermal cut-off element and the positive electrode adjacent to the thermal cut-off element. However, this method has the problems of making it difficult to protect the negative electrode using foam, and making assembly complicated and inconvenient. DISCLOSURE Technical Problem The present disclosure has been designed to solve the problems of the related art, and therefore the present disclosure is directed to providing a battery core module capable of effectively protecting the electrode structure with a simple structure. Technical Solution According to the present disclosure, a battery core module includes a battery unit and an electrical connection assembly. The battery unit includes a battery body, a first electrode, and a second electrode, wherein the battery body has an end and wherein the first electrode and the second electrode are disposed at the end. The electrical connection assembly is disposed at the end and includes a first conductive component, a second conductive component, a third conductive component, a thermal cut-off element, and an insulating adhesive. The insulating adhesive wraps a portion of the first conductive component, a portion of the second conductive component, and a portion of the third conductive component, and the thermal cut-off element is connected between the second conductive component and the third conductive component. The first conductive component is connected to the first electrode, and the second conductive component is connected to the second electrode. In an embodiment of the present disclosure, the insulating adhesive is coupled to the first conductive component, the second conductive component, and the third conductive component through insert-injection molding. In an embodiment of the present disclosure, the insulating adhesive has two openings, and a local portion of the first conductive component and a local portion of the second conductive component are respectively exposed through the two openings so as to be connected to the first electrode and the second electrode, respectively. In an embodiment of the present disclosure, the insulating adhesive has two openings, and a local portion of the second conductive component and a local portion of the third conductive component are respectively exposed through the two openings so as to be connected to both ends of the thermal cut-off element, respectively. In an embodiment of the present disclosure, a distal end of the first conductive component and a distal end of the third conductive component protrude and extend from the insulating adhesive. In an embodiment of the present disclosure, the first electrode extends to be folded onto the electrical connection assembly and is connected to the first conductive component, and the second electrode extends to be folded onto the electrical connection assembly and is connected to the second conductive component. In the present disclosure, the battery core module is installed inside an electronic product, wherein a distal end of the first conductive component and a distal end of the third conductive component are connected to a circuit board of the electronic product, wherein the first electrode is connected to the circuit board through the first conductive component, and wherein the second electrode is connected to the circuit board through the second conductive component, the thermal cut-off element, and the third conductive component. In the present disclosure, the insulating adhesive is configured to wrap a portion of the first conductive component, a portion of the second conductive component, and a portion of the third element, and the thermal cut-off element may be connected between the second conductive component and the third conductive component. In the present disclosure, the insulating adhesive may be coupled to the first conductive component, the second conductive component, and the third conductive component, and the thermal cut-off element may be connected to the second conductive component and the third conductive component through laser welding. In the present disclosure, the first conductive