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JP-2026514210-A - Module cover, battery pack, and vehicle

JP2026514210AJP 2026514210 AJP2026514210 AJP 2026514210AJP-2026514210-A

Abstract

A panel shape is disclosed which has an area that can cover together multiple battery modules adjacent to each other with a crossbeam in between, and a fixing portion is formed in the part corresponding to the crossbeam, and the module cover, battery pack, and vehicle are connected to the crossbeam through the fixing portion.

Inventors

  • ギ・ファン・イ
  • キ・テク・ジュン

Assignees

  • エルジー エナジー ソリューション リミテッド

Dates

Publication Date
20260507
Application Date
20241212
Priority Date
20240402

Claims (15)

  1. A pack case in which multiple crossbeams are formed in the internal space, spaced apart from each other, A battery module is positioned between adjacent crossbeams, has a flange that protrudes outward, and is coupled to the crossbeam through the flange, A battery pack comprising a module cover having a panel shape with an area capable of covering multiple adjacent battery modules together, with a fixing portion formed in the portion corresponding to the crossbeam, and the module cover being coupled to the crossbeam through the fixing portion.
  2. In the aforementioned pack case, the crossbeams are arranged to form a grid shape, and multiple battery modules are installed in a matrix shape having rows and columns. The battery pack according to claim 1, characterized in that the module covers are coupled to correspond to each row of battery modules, and one module cover covers together the battery modules included in one row.
  3. The battery pack according to claim 1 or 2, characterized in that both sides of the crossbeam face the battery module, and the flanges of the battery modules are connected to the ends of the crossbeam that are exposed between the battery modules on both sides.
  4. The battery pack according to claim 1 or 2, characterized in that each of the battery modules on both sides flanking the crossbeam has multiple flanges formed at spaced intervals, and the flanges of the battery modules on both sides are arranged alternately with respect to the crossbeam and coupled to it.
  5. The crossbeam is formed to be lower in height than the battery module, and the flange and module cover of the battery module are connected to the end of the crossbeam. The battery pack according to claim 1 or 2, characterized in that the flange and module cover of the battery module are fastened together to the crossbeam through the same fastening mechanism.
  6. The module cover includes a planar cover portion that covers the battery module, and a fixing portion that is recessed between adjacent cover portions and connected to the crossbeam. The cover portion is formed with a vent portion through which gases and flames generated from the battery module are discharged. The battery pack according to claim 1 or 2, characterized in that the fixing portion has a through hole through which a fastening mechanism that is coupled to the crossbeam passes.
  7. The battery pack according to claim 1 or 2, characterized in that the fixing portion of the module cover and the flange of the battery module are passed through together via a fastening mechanism, and the fastening mechanism is fastened to the crossbeam after passing through the fixing portion of the module cover and the flange of the battery module.
  8. The ends of the crossbeam, positioned between adjacent battery modules, are covered by the fixing portion of the module cover. The battery pack according to claim 1 or 2, characterized in that the end of the crossbeam and the fixing portion of the module cover have a planar shape that faces each other.
  9. The battery pack according to claim 1 or 2, characterized in that the flanges of the battery module are coupled to the ends of the crossbeam in a manner that is spaced apart from each other.
  10. The battery pack according to claim 9, characterized in that spacers are placed between multiple spaced flanges to fill the empty spaces between the flanges.
  11. The battery pack according to claim 10, characterized in that the flange and the spacer are on the same plane and are in contact with the fixing portion of the module cover.
  12. The battery pack according to claim 9, characterized in that the end of the crossbeam is covered by the fixing portion of the module cover, and the fixing portion has a projection that fills the gap between a plurality of spaced flanges.
  13. A bracket is provided on the outside of the fixing portion of the module cover, the bracket is fastened to the crossbeam together with the fixing portion of the module cover, the bracket has a pressurizing portion that pressurizes the fixing portion of the module cover into the space between a plurality of spaced flanges, and the fixing portion of the module cover, pressed by the pressurizing portion, fills the empty space between the plurality of spaced flanges, as described in claim 9.
  14. A module cover that covers multiple battery modules installed between multiple crossbeams inside a pack case, A module cover having a panel shape with an area capable of covering multiple battery modules adjacent to each other with the aforementioned crossbeam in between, wherein a fixing portion is formed in the portion corresponding to the crossbeam, and the module cover is coupled to the crossbeam through the fixing portion.
  15. A vehicle characterized by including the battery pack described in claim 1 or 2.

Description

This invention relates to a module cover, battery pack, and vehicle that can prevent fire spread between adjacent modules in the event of a fire in a battery module, reduce the number of module covers to lower production costs, improve assembly efficiency, and reduce assembly tolerances. Recently, technologies for carbon reduction have been actively developed to address environmental problems such as extreme temperatures. To reduce carbon emissions, energy must be produced in an environmentally friendly way, rather than using fossil fuels. This involves storing the produced energy in the form of electricity and using that stored electricity in vehicles, various industrial sites, and homes. To utilize electrical energy for carbon reduction, the use of batteries that can store and retrieve electrical energy is essential. Therefore, ensuring sufficient battery performance is crucial for adequately storing and using electrical energy without inconvenience. Batteries primarily utilize the oxidation-reduction reaction of metal ions. High-density metal ions are used to increase battery capacity, charge/discharge performance, and efficiency, and extensive research has been conducted on the materials that make up the electrolyte, including solid electrolytes. However, a common problem is that stability decreases as battery performance improves. Batteries used in vehicles, industry, and homes are manufactured in physical units called battery packs. A battery pack encloses numerous battery cells within a sealed battery case, preventing fire from spreading to the outside in the event of an accident such as thermal runaway. It also protects the internal battery cells from degradation due to external environmental factors or physical damage. A battery pack contains numerous battery cells in a form intermediate between modules and assemblies (CMAs, Cell Module Assembly). In the case of battery modules or assemblies, numerous battery cells are assembled into a single module or assembly, and these modules are fastened together inside the pack case, completing the battery pack. Maintenance is facilitated by servicing the battery in these module or assembly units. The numerous unit battery cells that make up a module or assembly consist of a positive electrode, a negative electrode, and an electrolyte. Since battery cells generate heat during charging and discharging, effective heat dissipation is necessary. Furthermore, from the perspective of battery modules, assemblies, and battery packs, efficient heat dissipation design is essential to prevent safety accidents. On the other hand, batteries can deteriorate due to manufacturing errors, excessive charging and discharging, and aging. If battery deterioration persists, it can eventually lead to a fire. Therefore, it is necessary to take precautions to prevent fires caused by batteries. To this end, it is important to continuously sense the battery's condition and to recognize and address any problems in advance, minimizing damage in the event of an unexpected problem. In particular, in the case of battery modules, venting of gases and flames is performed through the module cover. However, if the module cover detaches or a gap is created due to the venting of the module in question, fire can easily spread to other battery modules adjacent to that gap. This ultimately led to a fire within the battery pack itself, spreading the damage. Therefore, a technology was needed that would allow for smooth venting while reliably preventing the fire from spreading to adjacent battery modules. The matters described above as background technology are intended to enhance understanding of the background of the present invention and should not be interpreted as constituting prior art already known to those with ordinary skill in this field. A drawing showing a battery pack according to one embodiment of the present invention.A view of the battery pack shown in Figure 1 from above.A magnified view of a portion of the battery pack shown in Figure 1.A diagram showing the battery module of the battery pack illustrated in Figure 1.Figure 4 shows a view of the battery module from above.Figure 5 shows the battery module with a spacer attached.A drawing showing a protruding portion of a module cover according to an embodiment of the present invention.Figure 4 shows the battery module with the bracket attached.Figure 8 shows a diagram illustrating the pressurizing portion of the bracket.A drawing showing an embodiment in which the battery pack of the present invention is applied to a vehicle. In describing the embodiments disclosed herein, if a detailed description of related published technology is deemed to obscure the essence of the embodiments disclosed herein, such detailed description will be omitted. Furthermore, the accompanying drawings are merely for the purpose of providing a simplified understanding of the embodiments disclosed herein, and should not be understood as limiting the technical