KR-20260063711-A - Battery module

Abstract

The present disclosure relates to a battery module, wherein the contact distance between internal components of a secondary battery can be maintained constant, thereby improving the charging and discharging efficiency of the battery and extending the service life of the secondary battery. An exemplary battery module according to one embodiment of the present invention may include an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator, a case in which the electrode assembly is received internally, and a deformation prevention member installed in a shape that surrounds the edge of the case and restrains deformation of the case.

Inventors

• 김범래
• 김다현

Assignees

• 삼성에스디아이 주식회사

Dates

Publication Date

20260507

Application Date

20241031

Claims (20)

1. An electrode assembly comprising a first electrode plate, a second electrode plate, and a separator; A case in which the above electrode assembly is accommodated on the inside; and It includes a deformation prevention member that is installed in a shape that wraps around the edge of the above case and restrains the deformation of the above case; A battery module characterized by having the case mounted on the inner side of the deformation prevention part to form a unit module.
2. In paragraph 1, A battery module characterized by the above unit modules being arranged continuously in the width direction.
3. In paragraph 2, A housing that accommodates the above unit module and has open sides; and A battery module comprising: end covers coupled to both sides of the housing and electrically connected to the electrode assembly.
4. In paragraph 1, A battery module characterized by the above case being made of a soft film.
5. In paragraph 1, A first electrode lead protruding along one side in the longitudinal direction of the above case; and A battery module further comprising a second electrode lead protruding to the other side in the longitudinal direction of the above case.
6. In paragraph 5, The above deformation prevention member comprises: a first body part that surrounds the upper and lower sides of the case and one side in the longitudinal direction of the case connected to the first electrode lead; and A battery module comprising: a first cover that wraps around the other longitudinal side of the case connected to the second electrode lead and is detachably installed on the first body part.
7. In paragraph 6, The above deformation prevention member comprises: a first front cover coupled to at least one of the first body part and the first cover and positioned on the front of the case; and A battery module further comprising: a first rear cover coupled to at least one of the first body part and the first cover and located on the rear of the case.
8. In Paragraph 7, A battery module characterized in that the first front cover and the first rear cover include an insulating material.
9. In Paragraph 7, A battery module characterized in that the shapes of the first front cover and the first rear cover correspond to the shape of the case.
10. In paragraph 6, The first body portion comprises: a first fixed body having a shape that surrounds the upper side of the case and one side in the longitudinal direction of the case connected to the first electrode lead; and A battery module comprising: a first movable body rotatably installed on the first fixed body and opening the lower side of the case by a rotating motion.
11. An electrode assembly comprising a first electrode plate, a second electrode plate, and a separator; A case in which the above electrode assembly is accommodated on the inside; A first electrode lead electrically connected to the first electrode plate and protruding to the outside of the case; A second electrode lead electrically connected to the second electrode plate and protruding in the same direction as the first electrode lead; A battery module comprising: a deformation prevention member installed in a shape that wraps around the edge of the case, wherein the first electrode lead and the second electrode lead protrude outwardly, and which restrains the deformation of the case.
12. In Paragraph 11, A battery module characterized by having the case mounted on the inner side of the deformation prevention part to form a unit module.
13. In Paragraph 11, The above deformation prevention member comprises: a second body part that surrounds the upper and lower sides of the case and one side in the longitudinal direction of the case; and A battery module comprising: a second cover that wraps around the other longitudinal side of the case connected to the first electrode lead and the second electrode lead, and is detachably installed on the second body part.
14. In Paragraph 13, The second cover comprises: a cover body extending in the vertical direction having a hole in which the first electrode lead and the second electrode lead are located; and A battery module comprising: a wing member extending obliquely from the upper and lower sides of the cover body and contacting the second body part.
15. In Paragraph 13, The above deformation prevention member comprises: a second front cover coupled to at least one of the second body part and the second cover and positioned on the front of the case; and A battery module further comprising: a second rear cover coupled to at least one of the second body part and the second cover and located on the rear of the case.
16. In paragraph 15, A battery module characterized in that the second front cover and the second rear cover include an insulating material.
17. In paragraph 15, A battery module characterized in that the shapes of the second front cover and the second rear cover correspond to the shape of the case.
18. In Paragraph 14, The second body portion comprises a second fixed body having a shape that wraps around the upper side of the case and one side in the longitudinal direction of the case; and A battery module comprising: a second movable body rotatably installed on the second fixed body and opening the lower side of the case by a rotating motion.
19. In Paragraph 12, A battery module characterized by the above unit modules being arranged continuously in the width direction.
20. In Paragraph 19, A housing that accommodates the above unit module and has open sides; and A battery module comprising: end covers coupled to both sides of the housing and electrically connected to the electrode assembly.

Description

Battery module The present disclosure relates to a battery module. Unlike primary batteries, which cannot be recharged, secondary batteries are batteries capable of both charging and discharging. Low-capacity secondary batteries are used in small portable 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 drive systems and power storage batteries in hybrid and electric vehicles. Such secondary batteries include an electrode assembly consisting of a positive electrode and a negative electrode, a case housing the assembly, and electrode terminals connected to the electrode assembly. The information described above disclosed in the background technology of this invention is intended only to enhance understanding of the background of the present invention and may therefore include information that does not constitute prior art. The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is an exploded perspective view of a battery module according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of a unit module according to one embodiment of the present invention. FIG. 3 is a combined perspective view of a unit module according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of an electrode assembly and a case according to one embodiment of the present invention. FIG. 5 is a front view illustrating a state in which a case is exposed forward in a unit module according to one embodiment of the present invention. FIG. 6 is a front view illustrating the state in which the first cover and the first movable body are moved according to one embodiment of the present invention. FIG. 7 is an exploded perspective view of a unit module according to another embodiment of the present invention. FIG. 8 is a combined perspective view of a unit module according to another embodiment of the present invention. FIG. 9 is a front view illustrating a state in which a case is exposed forward in a unit module according to another embodiment of the present invention. FIG. 10 is a front view illustrating the state in which the second cover and the second movable body are moved according to another embodiment of the present invention. FIGS. 11a and FIGS. 11b are perspective views illustrating a battery pack including an exemplary secondary battery according to the present invention. FIGS. 12a and FIGS. 12b are a perspective view and a side view illustrating an automobile including an exemplary battery pack according to the present invention. Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor can appropriately define the concepts of terms to best describe their invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. Additionally, as used herein, “comprise, include” and/or “comprising, including” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and/or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and/or groups. Additionally, to aid in understanding the invention, the attached drawings are not drawn to actual scale, and the dimensions of some components may be exaggerated. Furthermore, the same reference numerals may be assigned to identical components in different embodiments. The statement that two subjects of comparison are ‘identical’ means that they are ‘substantially identical.’ Therefore, substantial identity may include deviations considered low in the industry, for example, deviations within 5%. Additionally, the statement that a parameter is uniform in a given area may mean that it is uniform from an average perspective. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that th