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CN-122003765-A - Battery module, battery pack including the same, and vehicle

CN122003765ACN 122003765 ACN122003765 ACN 122003765ACN-122003765-A

Abstract

The present disclosure relates to a battery module including a battery cell assembly including a plurality of battery cells stacked in a first direction, and a module frame including a first frame and a second frame configured to be coupled to each other along a second direction horizontally orthogonal to the first direction to accommodate the battery cell assembly.

Inventors

  • LI ZHENGXUN
  • ZHENG HUIMEI

Assignees

  • 株式会社LG新能源

Dates

Publication Date
20260508
Application Date
20250211
Priority Date
20240308

Claims (15)

  1. 1. A battery module, comprising: a battery cell assembly including a plurality of battery cells stacked in a first direction, and A module frame including a first frame and a second frame configured to be coupled to each other along a second direction horizontally orthogonal to the first direction to accommodate the battery cell assembly.
  2. 2. The battery module according to claim 1, Wherein the front surface of the battery cell assembly is covered by the first frame, Wherein the rear surface of the battery cell assembly is covered by the second frame, and Wherein the upper surface, the lower surface, the left surface, and the right surface of the battery cell assembly are divided and covered by the first frame and the second frame.
  3. 3. The battery module according to claim 1, Wherein the first frame is configured to accommodate a portion of the battery cell assembly on one side, and Wherein the second frame is configured to be combined with the first frame to accommodate the remaining portion of the battery cell assembly on the other side.
  4. 4. The battery module of claim 1, wherein an exhaust gas guiding direction of exhaust gas generated from the battery cells and the second direction are configured to be orthogonal.
  5. 5. The battery module of claim 1, wherein at least one of the first frame and the second frame is formed on an upper surface thereof with a vent hole configured to vent exhaust gas generated from the battery cell.
  6. 6. The battery module according to claim 1, Wherein the plurality of battery cells are stacked face to face such that the electrode leads are drawn in the front-rear direction and the sealing parts from which the electrode leads are not drawn are directed upward.
  7. 7. The battery module according to claim 1, Wherein the first frame and the second frame have open ends on the inner side, respectively, and Wherein the first frame and the second frame are configured such that inner open ends face each other.
  8. 8. The battery module according to claim 1, wherein a welded portion is formed at an inner open end of the first frame and the second frame facing each other.
  9. 9. The battery module of claim 8, wherein the weld is configured in the form of an at least partially bent wire.
  10. 10. The battery module of claim 1, further comprising a terminal electrically connected with the electrode lead of the battery cell and configured such that at least a portion of the terminal protrudes outside the first frame.
  11. 11. The battery module of claim 10, wherein the first frame has a terminal aperture for the terminal to pass therethrough.
  12. 12. The battery module according to claim 11, An insulating cover is disposed between the first frame and the terminal and is configured to electrically insulate the first frame and the terminal from each other.
  13. 13. The battery module of claim 12, wherein the insulating cover has a through hole configured to pass the terminal therethrough to the outside.
  14. 14. A battery pack comprising the battery module of any one of claims 1 to 13.
  15. 15. A vehicle comprising the battery module of any one of claims 1 to 13.

Description

Battery module, battery pack including the same, and vehicle Technical Field The present disclosure relates to a battery module, a battery pack including the same, and a vehicle. The present application is based on and claims priority of korean patent application No. 10-2024-0033430, filed on the korean intellectual property office at 3/8 of 2024, the disclosure of which is incorporated herein by reference in its entirety. Background Secondary batteries, which are easy to apply according to product groups and have electrical characteristics such as high energy density, are generally used for Electric Vehicles (EVs) or Hybrid Electric Vehicles (HEVs) driven by electric driving sources, and portable devices. These secondary batteries are attracting attention as novel energy sources for improving the ecological friendliness and energy efficiency due to the main advantages of significantly reducing the use of fossil fuels and other advantages of not producing byproducts resulting from the use of energy. Secondary batteries that are widely used at present include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and the like. When a higher output voltage is required, a battery module or a battery pack may be constructed by connecting a plurality of battery cells in series. In addition, the battery module or the battery pack may be constructed by connecting a plurality of battery cells in parallel to increase the charge and discharge capacity. A general method of constructing a battery pack by connecting a plurality of battery cells in series/parallel is performed by preferentially constructing battery modules including at least one battery cell and then adding other components to the at least one battery module to construct a battery pack or a battery rack. In the conventional battery module, the module frame is configured as various members, and welding parts may be formed to join the members. In this case, since the welding process for connecting the plurality of boards must be performed a plurality of times, there is a problem in that productivity is lowered. In addition, in a battery module in which a large number of battery cells are densely packed in a narrow space, ensuring safety when a thermal event occurs may be a very important issue. In particular, when an event such as thermal runaway occurs in the battery cell, high temperature gas, flame, or heat may be generated and emitted. In this case, the pressure inside the module frame may rise due to high temperature exhaust gas or flame, and this may cause damage to the module frame. In addition, if the welded part is broken, external oxygen may flow into the module frame, thereby increasing flames inside the battery module. This may cause a fire or explosion in the battery module or the battery pack. Such fires or explosions in the battery modules or in the battery packs may not only lead to property damage but also to injury. For example, if a fire or explosion occurs in a battery pack of an electric vehicle, safety of a user (e.g., a driver) may be threatened. Disclosure of Invention Technical problem The present disclosure is directed to solving the problems of the related art, and therefore, to provide a battery module, and a battery pack and a vehicle including the same, which stably maintain a coupled state of a module frame of the battery module, thereby ensuring safety. However, the technical problems the present disclosure is intended to solve are not limited to the above-described problems, and other problems not mentioned above will be clearly understood by those skilled in the art from the description of the present invention described below. Technical proposal In one aspect of the present disclosure, there is provided a battery module including a battery cell assembly including a plurality of battery cells stacked in a first direction, and a module frame including a first frame and a second frame configured to be coupled to each other along a second direction horizontally orthogonal to the first direction to accommodate the battery cell assembly. The front surface of the battery cell assembly may be covered by the first frame, the rear surface of the battery cell assembly may be covered by the second frame, and the upper surface, the lower surface, the left surface, and the right surface of the battery cell assembly may be divided and covered by the first frame and the second frame. The first frame may be configured to receive a portion of the battery cell assembly on one side and the second frame may be configured to combine with the first frame to receive the remaining portion of the battery cell assembly on the other side. The exhaust guide direction and the second direction of the exhaust gas generated from the battery cell may be configured to be orthogonal. At least one of the first frame and the second frame may be formed on an upper surface thereof with a ven