EP-4738525-A1 - SENSING MODULE AND BATTERY MODULE INCLUDING THE SAME

EP4738525A1EP 4738525 A1EP4738525 A1EP 4738525A1EP-4738525-A1

Abstract

A sensing module, including a busbar holder, a slot passing through the busbar holder in a first direction, a first substrate on the busbar holder, a second substrate extending from the first substrate toward the slot, a temperature sensor connected to the second substrate, a first protective member connected to the second substrate, the first protective member surrounding the temperature sensor, and a support member supporting the first protective member inside the slot.

Inventors

AHN, JAE PIL
HONG, SU BEEN

Assignees

SAMSUNG SDI CO., LTD.

Dates

Publication Date: 20260506
Application Date: 20250926

Claims (15)

A sensing module, comprising: a busbar holder; a slot passing through the busbar holder in a first direction; a first substrate on the busbar holder; a second substrate extending from the first substrate toward the slot; a temperature sensor connected to the second substrate; a first protective member connected to the second substrate, the first protective member surrounding the temperature sensor; and a support member supporting the first protective member inside the slot.
The sensing module as claimed in claim 1, wherein the second substrate comprises: a mounting portion facing the first substrate in a second direction intersecting the first direction, the mounting portion being inserted into the slot; and a connecting portion disposed between the first substrate and the mounting portion.
The sensing module as claimed in claim 2, wherein the connecting portion comprises: a first end portion connected to the first substrate; a second end portion spaced apart from the first end portion in the second direction, the second end portion being connected to the mounting portion; and at least one bending portion between the first end portion and the second end portion.
The sensing module as claimed in claim 3, wherein the bending portion is bent around a third direction intersecting the first direction and the second direction.
The sensing module as claimed in any preceding claim, wherein: the busbar holder comprises a partition wall surrounding the slot, and the support member comprises a hook protruding from the partition wall toward the slot.
The sensing module as claimed in claim 5, wherein the busbar holder further comprises an entry hole passing through the partition wall in the second direction, the connecting portion being inside the entry hole.
The sensing module as claimed in claim 5 or 6, wherein the hook comprises: a first hook body connected to the partition wall; a second hook body extending from the first hook body, the second hook body being spaced apart from an inner surface of the partition wall; and a pressing portion at an end portion of the second hook body, the pressing portion pressing the first protective member in the first direction.
The sensing module as claimed in claim 7, wherein a distance between the second hook body and the inner surface of the partition wall increases toward the pressing portion.
The sensing module as claimed in claim 7 or 8, wherein a distance between the pressing portion and the inner surface of the partition wall is greater than a distance between a perimetric surface of the first protective member and the inner surface of the partition wall.
The sensing module as claimed in claim 7, 8 or 9, wherein the first protective member comprises: a first surface, the pressing portion being in contact with the first surface; and a second surface spaced apart from the first surface in the first direction, the second surface facing the second substrate.
The sensing module as claimed in claim 10, wherein: the first protective member further comprises a concave groove in the first surface in the first direction, and the pressing portion is in the groove.
The sensing module as claimed in any one of claims 2 to 11, wherein: the mounting portion comprises a first mounting surface and a second mounting surface spaced apart from each other in the first direction, and the temperature sensor and the first protective member are on the first mounting surface.
The sensing module as claimed in claim 12, further comprising a second protective member on the second mounting surface, the second protective member supporting the mounting portion.
The sensing module as claimed in any preceding claim, further comprising: a first connecting wire connected to a first terminal of the temperature sensor; and a second connecting wire connected to a second terminal of the temperature sensor, and wherein the first protective member comprises a bypass wire connected to at least one of the first connecting wire and the second connecting wire.
A battery module, comprising: a housing; a plurality of battery cells inside the housing; and the sensing module of any preceding claim, wherein the sensing module is inside the housing, with the busbar holder facing the battery cell, the sensing module collecting operation information of one or more of the plurality of battery cells.

Description

BACKGROUND 1. Field The present disclosure relates to a sensing module and a battery module including the same. 2. Description of the Related Art Secondary batteries are batteries that can be charged and discharged, unlike primary batteries that cannot be recharged. Low-capacity secondary batteries are used in portable small electronic devices such as smartphones, feature phones, laptop computers, digital cameras, and camcorders, while high-capacity secondary batteries are widely used as power sources for motor driving in hybrid vehicles, electric vehicles, and the like, and batteries for power storage. This secondary battery includes an electrode assembly composed of a positive electrode and a negative electrode, a case that accommodates the electrode assembly, and an electrode terminal connected to the electrode assembly. The secondary batteries are being widely used for driving and energy storage not only in small devices such as portable electronic devices, but also in medium-to-large devices such as electric vehicles and energy storage systems (ESS). In particular, in the case of the medium-to-large devices, one battery module is configured in a form that multiple battery cells are electrically connected to each other to improve the output and capacity of the battery. A sensing module for measuring the temperature and voltage of the battery cell in order to detect the risk of explosion due to overheating in advance and perform a protective operation may be mounted on such a battery module. The above-described information disclosed in the technology that forms the background of the present disclosure is only intended to improve understanding of the background of the present disclosure, and thus may include information that does not constitute the related art. SUMMARY The present disclosure is directed to providing a sensing module and a battery module including the same, which can stably fix a component and secure a space for circuit implementation. According to an aspect, a sensing module, includes a busbar holder, a slot passing through the busbar holder in a first direction, a first substrate on, e.g. disposed on, the busbar holder, a second substrate extending from the first substrate toward the slot, a temperature sensor connected to the second substrate, a first protective member connected to the second substrate, the first protective member surrounding, e.g. disposed to surround, the temperature sensor, and a support member supporting the first protective member inside the slot. The second substrate may include a mounting portion facing, e.g. disposed to face, the first substrate in a second direction intersecting the first direction, the mounting portion being inserted into the slot, and a connecting portion disposed between the first substrate and the mounting portion. The connecting portion may include a first end portion connected to the first substrate, a second end portion spaced apart from the first end portion in the second direction, the second end portion being connected to the mounting portion, and at least one bending portion between, e.g. disposed between, the first end portion and the second end portion. The bending portion may be bent around a third direction intersecting the first direction and the second direction. The busbar holder may include a partition wall surrounding, e.g. disposed to surround, the slot, and the support member may include a hook protruding from the partition wall toward the slot. The partition wall may extend from the busbar holder in a direction opposite to the first direction. The busbar holder may further include an entry hole passing through the partition wall in the second direction, the connecting portion being inside, e.g. disposed inside, the entry hole. The hook may include a first hook body connected to the partition wall, a second hook body extending from the first hook body, the second hook body being spaced apart from an inner surface of the partition wall, and a pressing portion at, e.g. disposed at, an end portion of the second hook body, the pressing portion pressing the first protective member in the first direction. The second hook body may extend obliquely from the first hook body in the first direction. A distance between the second hook body and the inner surface of the partition wall may increase toward the pressing portion. A distance between the pressing portion and the inner surface of the partition wall may be greater than a distance between a perimetric surface of the first protective member and the inner surface of the partition wall. The second hook body may be elastically deformable. The first protective member may include a first surface, the pressing portion may be in contact with the first surface, and a second surface may be spaced apart from the first surface in the first direction, the second surface facing, e.g. disposed to face, the second substrate. The first protective member may further include a concave groove in th