Battery pack and vehicle including the same

Abstract

Disclosed are a battery pack for improving stability by blocking or delaying transfer of heat or flame generated in a specific cell block to an adjacent cell block, and a vehicle including the same.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a battery pack for blocking or delaying the transfer of heat or flame generated in a certain cell block to an adjacent cell block to improve stability, and a vehicle including the same. BACKGROUND

[0002] Recently, technologies for reducing carbon are being actively developed to address environmental problems such as abnormal temperatures. In order to reduce carbon, it is necessary to generate energy in an environmentally friendly manner rather than using fossil fuels to generate energy, store the generated energy in the form of electric energy, and use the stored electric energy in vehicles, various industrial sites, and homes.

[0003] In order to reduce carbon by using electric energy, it is essential to use a battery that can store and extract electric energy. Therefore, in order to sufficiently store electric energy and use electric energy without inconvenience, it is necessary to secure the performance of the battery.

[0004] A battery mainly utilizes the redox reaction of metal ions, and high-density metal ions are used to increase the capacity, charge-discharge performance, and efficiency of the battery, and a great deal of research is being conducted on materials constituting an electrolyte and solid electrolytes. However, as the performance of the battery improves, there is generally a problem of reduced stability.

[0005] A battery used in vehicles, industries, and homes is manufactured as a physical unit called a battery pack. The battery pack performs the following functions by embedding a plurality of battery cells inside a battery case and sealing the battery case: preventing the spread of fire to the outside when an event such as battery thermal runaway occurs, and protecting the internal battery cells from degradation due to the influence of the external environment or damage due to physical factors.

[0006] A plurality of battery cells is embedded in a battery pack in the form of a module or assembly (cell module assembly (CMA)). In the case of a battery module or assembly, a plurality of battery cells is assembled into a single module or assembly, and a plurality of modules is fastened inside a battery pack housing, whereby the battery pack is completed. When a battery is serviced, maintenance becomes easy by allowing maintenance to be performed in units of such a module or assembly.

[0007] In addition, a battery can be degraded due to manufacturing errors, overcharging and discharging, and aging. If the degradation of the battery continues, it will eventually cause a fire.

[0008] In particular, when thermal runaway (TR) occurs in a battery cell inside a battery pack, intense flames, gas, and heat are ejected from the battery cell and flow inside the battery pack. This flow causes heat or flame to be transferred to an adjacent battery cell inside the battery pack. Such heat or flame is one of the causes of simultaneous TR in battery cells inside the battery pack.

[0009] Accordingly, it is necessary to prepare a structure capable of preventing or reducing the transfer of such heat or flame inside the battery pack, in order to prevent the above problems.

[0010] The matters described above as background technique are intended to enhance the understanding of the background of the present disclosure and should not be considered as admitting that they correspond to the prior art known to those skilled in the art. SUMMARY

[0011] TECHNICAL PROBLEM

[0012] An object of the present disclosure proposed to solve the problems is to provide a battery pack capable of improving stability by including a structure for blocking or delaying the transfer of heat or flame generated in a certain cell block to an adjacent cell block, and a vehicle including the same.

[0013] The technical objects to be achieved in the present disclosure are not limited to the aforementioned technical objects, and other technical objects not mentioned above will be clearly understood by persons skilled in the art from the following description.

[0014] TECHNICAL SOLUTION

[0015] A battery pack according to the present disclosure for achieving the above object includes a battery pack case, a plurality of cell blocks built in the battery pack case, each of the cell blocks being composed of a plurality of battery cells stacked, and a support member disposed between adjacent cell blocks to support the adjacent cell blocks, and the support member includes a plurality of assembly portions interlocked with each other, and a blocking portion is disposed between the assembly portions to block the transfer of heat or flame between the adjacent cell blocks.

[0016] In the battery pack according to the present disclosure, the plurality of assembly portions constituting the support member can be disposed to face each other.

[0017] In the battery pack according to the present disclosure, each of the assembly portions can be formed with a protrusion protruding toward the other, and the protrusions formed on each of the assembly portions can be disposed to overlap in a vertical direction while interlocking with each other.

[0018] In the battery pack according to the present disclosure, the assembly portions can be respectively disposed on both sides of each of the cell blocks, and the protrusion of the assembly portion on one side and the protrusion of the assembly portion on the other side can be disposed at different positions on the assembly portions.

[0019] In the battery pack according to the present disclosure, the protrusion of the assembly portion on one side can be formed on an upper portion of the assembly portion on one side, and the protrusion of the assembly portion on the other side can be formed on a lower portion of the assembly portion on the other side.

[0020] In the battery pack according to the disclosure, the blocking portion can have a plate shape covering the protrusions of each of the assembly portions.

[0021] In the battery pack according to the disclosure, the adjacent plurality of assembly portions constituting a single support member can be fastened together by the fastening member.

[0022] In the battery pack according to the disclosure, the adjacent plurality of assembly portions can be fastened at a plurality of spaced locations by a plurality of fastening members.

[0023] In the battery pack according to the disclosure, the fastening member can have a pin shape passing through the adjacent plurality of assembly portions at the same time.

[0024] In the battery pack according to the disclosure, the blocking portion can be a single plate disposed between the plurality of assembly portions, and can be located between the protrusions overlapping in the vertical direction by being bent a plurality of times.

[0025] In the battery pack according to the disclosure, the adjacent plurality of assembly portions constituting a single support member and the blocking portion can be fastened together by the fastening member.

[0026] In the battery pack according to the disclosure, the fastening member can have a pin shape passing through the adjacent plurality of assembly portions and the blocking portion at the same time.

[0027] In the battery pack according to the disclosure, the blocking portion can form a curved surface at a location between the protrusions overlapping in the vertical direction, and the fastening member can pass through the curved surface of the blocking portion.

[0028] In the battery pack according to the disclosure, a curved surface hole for the fastening member to pass through can be formed in the curved surface of the blocking portion, an assembly member can be disposed in the curved surface hole of the blocking portion, and the fastening member can pass through the assembly member to be fastened.

[0029] In the battery pack according to the disclosure, the assembly member can have a bushing shape and have a flange and a neck portion, and the neck portion of the bushing can protrude toward any one of the assembly portions to temporarily fasten the blocking portion and the assembly portion and prevent damage to the blocking portion during fastening.

[0030] In the battery pack according to the disclosure, a fixing recess can be formed on one surface of any one of the assembly portions, and the fixing recess can be formed to correspond to the blocking portion so that the blocking portion is installed in the fixing recess.

[0031] In the battery pack according to the disclosure, the blocking portion can be installed in the fixing recess, and one surface of the assembly portion on which the blocking portion is installed and the blocking portion can form the same plane.

[0032] In the battery pack according to the disclosure, the blocking portion can be made of a fire-resistant material.

[0033] A vehicle according to the present disclosure includes the above-described battery pack.

[0034] Advantageous Effects

[0035] According to the present disclosure, it is possible to provide a battery pack capable of improving stability by including a structure for blocking or delaying the transfer of heat or flames generated in a certain cell block to an adjacent cell block, and a vehicle including the same.

[0036] Effects obtained from the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned above can be clearly understood by those skilled in the art from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a view illustrating a battery pack of the present disclosure.

[0038] Figure 2 is a view illustrating Figure 1 is a view illustrating one embodiment of a support member.

[0039] Figure 3 is a view illustrating Figure 1 is a view illustrating another embodiment of a support member.

[0040] Figure 4 is a view illustrating the coupling of a blocking portion and a support member of the present disclosure.

[0041] Figure 5 is a plan view of a blocking portion of the present disclosure.

[0042] Figure 6 is a plan view of a blocking portion and an assembly member of the present disclosure.

[0043] Figure 7 is a view illustrating one embodiment of an assembly member of the present disclosure.

[0044] Figure 8 is a view illustrating a fixing recess of a support member to which a blocking portion of the present disclosure is mounted and fastened.

[0045] Figure 9 is a view illustrating a vehicle to which a battery pack according to an embodiment of the present disclosure is applied. DETAILED DESCRIPTION

[0046] In the following description, detailed descriptions of known functions and configurations incorporated herein can be omitted when it can make the subject matter of the present disclosure unclear. The same reference numerals will be used to refer to the same or similar components throughout the drawings. Also, the drawings are intended to facilitate easy understanding of the embodiments disclosed in the specification, and the technical idea disclosed in the specification is not limited by the drawings, and it should be understood to include all modifications, equivalents, or alternatives included in the spirit and technical scope of the present disclosure.

[0047] Although terms such as "first" and "second" can be used to describe various elements, these terms are used only to distinguish the same or similar elements from each other. The above terms are used only to distinguish one component from another component. An element described in the singular is intended to include a plurality of elements unless the context clearly dictates otherwise.

[0048] In the present specification, the term "include" or "comprise" is intended to designate the presence of a described feature, number, step, operation, component, part or a combination thereof, but should be understood as not precluding the presence or addition of one or more other features, numbers, steps, operations, components, parts or a combination thereof. The suffix "module" and "unit" of the elements used in the following description are used only for convenience of description and thus can be used interchangeably and do not have any distinguishable meaning or function.

[0049] When a component is "coupled" or "connected" to another component, it should be understood that although the component can be directly coupled or connected to another component, a third component can be present between the two components. When a component is "directly coupled" or "directly connected" to another component, it should be understood that no element is present between the two components.

[0050] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. Regardless of the drawing reference numerals, the same or similar components will be given the same drawing reference numerals, and redundant descriptions thereof will be omitted.

[0051] A plurality of battery cells can be built into a battery pack in an intermediate form of a module or assembly (cell module assembly (CMA)), and in this structure, the module supports and fixes the battery cells to the battery pack. In this structure, a plurality of battery cells are first assembled into a module, and then the assembled module is integrated into one large battery pack. This structure requires a plurality of assembly stages and a complicated connection process, and waste of materials and space can occur at each stage. This can increase the overall size and weight of the battery pack, increase manufacturing costs, and become a factor that limits the energy density of the battery.

[0052] To address this issue, cell-to-pack technology exists. Cell-to-pack technology refers to a technology that eliminates intermediate module assembly steps and directly assembles battery cells into the battery pack.

[0053] In battery packs employing cell-to-pack technology, multiple battery cells are stacked to form a cell block, which is directly supported and fixed to the battery pack (BP) by support members. This structure eliminates intermediate structures such as modules, enabling improved space efficiency, simplified manufacturing processes, and reduced weight of the battery pack BP.

[0054] Furthermore, the battery is subjected to stress due to design or manufacturing defects, overcharging and discharging, misuse, etc., and if this stress persists, the battery cell deteriorates. If the battery cell deteriorates and remains at a certain temperature or higher, the flammable electrolyte inside the battery cell evaporates and sprays out, and the internal pressure of the battery cell increases, leading to a fire in the battery cell and the cell block 100 containing the battery cell. The cell block 100 that has already caught fire releases heat or flames to the surroundings, resulting in a fire in a nearby cell block, which also releases heat and flames. This process repeats, leading to the breakdown of the battery's TR chain.

[0055] However, unlike traditional battery packs, battery packs using cell-to-pack technology do not have intermediate structures such as modules, making it difficult to prevent heat or flames caused by a fire in one cell block from transferring to adjacent cell blocks.

[0056] Therefore, to solve this problem, a battery pack is needed that can prevent heat or flames caused by a fire in one cell from being transferred to adjacent cells.

[0057] This disclosure blocks or delays the transfer of heat or flame between adjacent cell blocks 100 to prevent the transfer of heat and flame caused by a fire in a particular cell block 100 to adjacent cell blocks 100, thereby preventing TR chains in the cell blocks 100 inside the battery pack and improving the performance and safety of the battery pack BP.

[0058] Specifically, such as Figure 1 As shown, the battery pack according to the embodiments of the present disclosure may include a plurality of battery cells 100, and the support member 200 may be connected to both sides of the battery cells 100 and built into the battery pack housing 10.

[0059] Further, the support member 200 disposed between the adjacent battery cell blocks 100 can support the adjacent battery cell blocks 100 and include a plurality of assembly portions 210 engaged with each other, and a blocking portion 230 can be disposed between the plurality of assembly portions 210. The blocking portion 230 can effectively block or delay the transfer of heat or flame between the adjacent battery cell blocks 100.

[0060] As shown in Figure 2 and Figure 3 , in order to more firmly assemble, the plurality of assembly portions 210 constituting the support member can be engaged with each other.

[0061] For example, as shown in Figure 2 and Figure 3 , the assembly portion 210 can be constituted by a pair of support members, and the plurality of assembly portions 210 constituting the support member 200 can be disposed to face each other.

[0062] By adopting the above structure, the battery cell blocks 100 can be assembled without any gap, and thus can be more firmly installed and assembled in the battery pack. Incidentally, the superior performance of the battery means the high energy density of the battery. Since the battery pack BP is constituted by a plurality of battery cell blocks 100, the energy density of the battery can be improved by densely assembling the plurality of battery cell blocks 100. Therefore, in order to improve the performance of the battery, the battery cell blocks 100 need to be assembled at a high density. Therefore, by densely assembling the battery cell blocks 100 in the form of being engaged with each other as described above into the battery pack, the energy density of the battery can be increased, and the battery performance can be improved.

[0063] For example, the assembly portion 210 can have a protrusion 211 formed to protrude toward each other, and the protrusions 211 formed on the assembly portions 210 can be disposed to overlap each other in a vertical direction while being engaged with each other. Specifically, the assembly portions 210 are disposed on both sides of each battery cell block 100, and the protrusion 211 of the assembly portion 210 on one side and the protrusion 211 of the assembly portion 210 on the other side can be disposed at different positions on the corresponding assembly portions 210. More specifically, the protrusion 211 of the assembly portion 210 on one side can be formed on the upper side of the assembly portion 210, and the protrusion 211 of the assembly portion 210 on the other side can be formed on the lower side of the assembly portion 210. In this structure, when the battery cell blocks 100 are assembled into the battery pack, by simply disposing the support member between the adjacent battery cell blocks 100 without the process of adjusting the combination of the support member between the adjacent battery cell blocks 100, the protrusions 211 of the adjacent assembly portions 210 are engaged with each other and overlap in the vertical direction, and thus the battery cell blocks 100 can be firmly assembled into the battery pack, and since no separate assembly process is required, the firm battery cell blocks can be assembled inside the battery pack, thereby reducing the assembly time and cost.

[0064] As shown in Figure 2 andFigure 3 As shown, the shape of the protrusion 211 can be a protruding square protrusion shape having a square cross section. However, this is an example, and the shape of the protrusion 211 is not limited thereto.

[0065] The barrier portion 230 can be formed of a fire-resistant material so as to block heat or flame transfer between adjacent battery cell blocks 100 by being disposed between the assembly portions 210. More specifically, the barrier portion 230 can be formed of a fire-resistant mineral such as mica or a heat-resistant plastic material. However, this is an example, and the material of the barrier portion 230 is not limited thereto. Any material capable of effectively blocking heat and flame can be used as the material of the barrier portion 230.

[0066] In an embodiment of the disclosure, as Figure 2 As shown, the barrier portion 230 can have a plate shape covering the protrusions 211 of each assembly portion 210. The barrier portion 230 can be combined with the protrusions 211 of the assembly portion 210, combined with the assembly portion 210 contacting the other side of the protrusion 211, or combined with all of the adjacent assembly portions 210.

[0067] The barrier portion 230 can be combined with the assembly portion 210 by an adhesive, or can be combined with the assembly portion 210 by being positioned in the fixing recess 213, which will be described later.

[0068] Through this structure, the barrier portion 230 can be inserted by being combined with the protrusion 211 of the assembly portion 210 on one side or with the side of the assembly portion 210 on the other side corresponding thereto. By simply combining a plurality of assembly portions 210 in this way, the barrier portion 230 can be positioned between adjacent battery cell blocks 100 without a separate additional process, thereby reducing assembly costs and time.

[0069] In another embodiment of the disclosure, the barrier portion 230 can be a single plate positioned between the assembly portions 210, and can be positioned between the protrusions 211 overlapping in the vertical direction by being bent a plurality of times. The bent surface 231 of the barrier portion 230 formed by bending the barrier portion 230 a plurality of times can be positioned between the protrusions 211 of the adjacent assembly portions 210 overlapping in the vertical direction.

[0070] More specifically, as Figure 3 As shown, the barrier portion 230 can be bent twice to cover the protrusions 211 of the adjacent assembly portions 210 at the same time, and can be positioned between the protrusions 211 overlapping in the vertical direction. The barrier portion 230 can form a bent surface 231 at a point between the protrusions 211 overlapping in the vertical direction.

[0071] To block or delay the transfer of heat and flames occurring in a specific cell block to adjacent cell blocks, it can be necessary to block the space between adjacent cell blocks without any gap.

[0072] The blocking portion 230 of the present disclosure has a shape corresponding to the contact surface of the adjacent assembly portion 210 and can cover the adjacent assembly portion 210 without any gap, thereby effectively blocking or delaying the transfer of heat and flames occurring in a specific cell block 100 to adjacent cell blocks 100.

[0073] The fastening member 250 can fasten the adjacent assembly portion 210 and the blocking portion 230 constituting one support member 200 together.

[0074] For example, the fastening member 250 can have a pin shape that passes through the adjacent assembly portion 210 or the blocking portion 230 together.

[0075] The fastening member 250 can pass through the protrusion 211 of the plurality of assembly portions 210 or the curved surface 231 of the blocking portion 230. A hole for the fastening member 250 to pass through can be formed in each of the plurality of assembly portions 210 and the blocking portion 230, and a curved surface hole 233 for the fastening member 250 to pass through can be formed in the curved surface 231 of the blocking portion 230. In addition, an assembly member 260, which will be described later, can be disposed in the curved surface hole 233.

[0076] The hole formed in the plurality of assembly portions 210 and the curved surface hole 233 formed in the curved surface 231 of the blocking portion 230 can be formed at positions corresponding to each other in the vertical direction, so that the pin-shaped fastening member 250 passes through the hole in the vertical direction to fasten the assembly portion 210 and the blocking portion 230.

[0077] To more effectively fasten the adjacent assembly portion 210 and the blocking portion 230 with high strength, the adjacent assembly portion 210 and the blocking portion 230 can be fastened at a plurality of spaced-apart points by the fastening member 250.

[0078] The fastening member 250 can have a rod shape extending in the vertical direction, and more particularly, the fastening member 250 can be a pin, a bolt, a screw, a rivet, or the like. The fastening member 250 can be a single rod or a plurality of spaced-apart rods. The vertical length of the fastening member 250 can be the same as the vertical length of the assembly portion 210.

[0079] With this structure, the components of the support member 200 can be more effectively secured, thus allowing the cell blocks 100 connected to the support member 200 to be more efficiently assembled into the battery pack. Additionally, pin-shaped fastening members 250 can be positioned between adjacent cell blocks 100 to protect them from loads and external impacts applied from outside the battery pack. This prevents degradation of the cell blocks 100 and prevents fires within the cell blocks 100 and TRs (transient stresses) in the battery pack caused by fires, thus enabling the manufacture of a battery pack that is safer against physical impacts.

[0080] For example, such as Figure 2 As shown, when the blocking part 230 is a plate covering each protrusion 211 of a plurality of adjacent assembly parts 210, the fastening member 250 can pass through the upper protrusion 211 of one side of the assembly part 210 and the lower protrusion 211 of the assembly part 210 on the other side in the vertical direction at the same time.

[0081] For example, such as Figure 3 As shown, when the blocking portion 230 is a single plate located between the assembly portions 210 and is located between the vertically overlapping protrusions 211 by bending multiple times, and the curved surface 231 is formed at the location between the vertically overlapping protrusions 211, the fastening member 250 can fasten adjacent assembly portions 210 and blocking portions 230 by passing through the protrusions 211 of the plurality of assembly portions 210 and the curved surface 231 of the blocking portion 230.

[0082] Furthermore, a fixing recess 213 is formed on one surface of the support member 200, and the fixing recess 213 is formed to correspond to the blocking portion 230, such that the blocking portion 230 is positioned in the fixing recess 213.

[0083] like Figure 4 As shown, a fixing recess 213 may be formed on a surface of the assembly portion 210 that contacts another assembly portion 210. The fixing recess 213 may be formed in a shape corresponding to the blocking portion 230. The fixing recess 213 may be formed on the entire surface of the assembly portion 210, and may be formed on a protrusion 211 of the assembly portion 210 or on another surface of the assembly portion 210 corresponding to the protrusion 211.

[0084] The hole through which the fastening member 250 passes can be formed in the fixing recess 213 of the assembly part 210, and the hole can be formed at a position corresponding in the vertical direction to the curved surface hole 233 formed in the curved surface 231 of the blocking part 230.

[0085] Figure 5 This is a top view of the blocking part 230 according to an embodiment of the present disclosure. Figure 6 This is a top view of the blocking portion 230 and the assembly member 260 according to an embodiment of this disclosure. (Refer to...)Figure 5 and Figure 6 The blocking portion 230 and the assembly member 260 are described.

[0086] As Figure 5 illustrated, a plurality of curved surface holes 233 can be formed to be spaced apart from each other on the curved surface 231 of the blocking portion 230. As Figure 6 illustrated, the assembly member 260 can be provided in each of the curved surface holes 233 formed in the curved surface 231. The assembly member 260 can be inserted into the curved surface hole 233 of the blocking portion 230. With this structure, the assembly member 260 can temporarily fasten the blocking portion 230 and the assembly portion 210 to position the blocking portion 230 in the fixing recess 213 of the assembly portion 210. Accordingly, the blocking portion 230 and the assembly portion 210 can be easily combined with each other, and the force applied to the assembly portion 210 and the blocking portion 230 when the fastening member 250 is fastened can be dispersed to prevent damage to the assembly portion 210 and the blocking portion 230.

[0087] For example, as Figure 7 illustrated, the assembly member 260 can have a bushing shape constituted by a flange 263 and a neck portion 261. The neck portion 261 can have a cylindrical shape extending in a vertical direction. The flange 263 is integrally formed on an upper end of the neck portion 261 and has a shape extending in a horizontal direction to restrict upward and downward movement of the assembly member 260 and prevent the assembly member 260 from being separated from the curved surface hole 233.

[0088] More specifically, the neck portion 261 of the assembly member 260 can protrude toward one of the plurality of assembly portions 210 and can be inserted into a hole formed in the assembly portion 210. With this structure, the blocking portion 230 and the assembly portion 210 can be temporarily fastened to each other.

[0089] The diameter of the flange 263 can be greater than the diameter of the curved surface hole 233 so that the assembly member 260 can be prevented from being separated from the curved surface hole 233.

[0090] In addition, the assembly member 260 can include a cutout portion formed on a side surface. The cutout portion 265 can increase the flexibility of the assembly member 260 and provide pressure to the hole when the assembly member 260 is inserted into the curved surface hole 233 and the hole formed in the assembly portion 210.

[0091] As Figure 8 illustrated, the blocking portion 230 can be installed in the fixing recess 213 formed on one side of the assembly portion 210.

[0092] For example, the plate thickness of the blocking portion 230 can be the same as the depth of the fixing recess 213 formed on one side of the assembly portion 210. More specifically, when the blocking portion 230 is installed in the fixing recess 213, the blocking portion 230 and the side of the assembly portion 210 on which the blocking portion 230 is positioned form the same plane, thereby achieving a firm connection between the blocking portion 230 and the assembly portion 210.

[0093] For example, the fixing recess 213 can be formed in each of the assembly portion of one side and the assembly portion of the other side. More specifically, the fixing recess 213 formed in the assembly portion of one side can be formed on a surface that contacts the assembly portion of the other side, and the fixing recess 213 formed in the assembly portion of the other side can be formed on a surface that contacts the assembly portion of one side. The fixing recess 213 of the assembly portion of one side and the fixing recess 213 of the assembly portion of the other side can have shapes that face each other and correspond to each other. The blocking portion 230 can be disposed to overlap the fixing recess 213 of the assembly portion of one side and the fixing recess 213 of the assembly portion of the other side. In particular, the sum of the depth of the fixing recess 213 of the assembly portion of one side and the depth of the fixing recess 213 of the assembly portion of the other side is equal to the plate thickness of the blocking portion 230, and thus the assembly portion of one side and the assembly portion of the other side can be closely coupled to each other while the blocking portion 230 is positioned therebetween. Through this structure, the volume of the support member 200 including the assembly portion of one side, the assembly portion of the other side, and the blocking portion 230 can be reduced, thereby increasing the energy density of the battery pack, and the blocking portion 230 can overlap the assembly portion of one side and the assembly portion of the other side at the same time, thereby enabling the two assembly portions 210 to be more firmly coupled.

[0094] Figure 9 FIG. 1 is a view illustrating a vehicle to which a battery pack according to an embodiment of the disclosure is applied. Referring to the drawing, as shown, Figure 9 As shown, the battery pack according to an embodiment of the disclosure can be applied to a battery pack BP of various vehicles V such as an internal combustion engine vehicle, an electric vehicle, a hybrid vehicle, a fuel cell vehicle, and the like, and can be applied to a battery pack BP of various fields such as an industrial energy storage system (ESS), a home ESS, a small battery pack, and the like, in addition to the vehicle V.

[0095] Although the disclosure has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the disclosure without departing from the spirit and scope of the disclosure as set forth in the appended claims.

Claims

1. A battery pack, the battery pack comprising: Battery pack casing; Multiple battery cell blocks, wherein the multiple battery cell blocks are built into the battery pack casing, and each of the battery cell blocks consists of multiple stacked battery cells; as well as A support member is disposed between adjacent battery cells to support the adjacent battery cells, and the support member includes a plurality of interlocking assemblies, with blocking portions disposed between the assemblies to block the transfer of heat or flame between the adjacent battery cells.

2. The battery pack according to claim 1, wherein, The plurality of assembly parts constituting the support member are arranged to face each other. Each of the assembly portions has a protrusion that protrudes toward each other, and the protrusions formed on each of the assembly portions are arranged to overlap in the vertical direction while interlocking with each other.

3. The battery pack according to claim 2, wherein, The assembly portion is provided on both sides of each of the battery cells, and the protrusion of the assembly portion on one side and the protrusion of the assembly portion on the other side are provided at different positions on the assembly portion.

4. The battery pack according to claim 3, wherein, The protrusion of the assembly portion on one side is formed on the upper part of the assembly portion on one side, and the protrusion of the assembly portion on the other side is formed on the lower part of the assembly portion on the other side.

5. The battery pack according to claim 2, wherein, The blocking portion has a plate shape that covers the protrusions in each of the assembly portions.

6. The battery pack according to claim 1, wherein, Multiple adjacent assembly parts constituting a single support member are fastened together by fastening members. The adjacent assembly parts are fastened at multiple spaced locations by multiple fastening members, and the fastening members have a pin shape that passes through the adjacent assembly parts simultaneously.

7. The battery pack according to claim 2, wherein, The blocking part is a single plate disposed between the plurality of assembly parts, and is located between the overlapping protrusions in the vertical direction by bending multiple times.

8. The battery pack according to claim 7, wherein, The adjacent assembly parts constituting a single support member and the blocking part are fastened together by fastening members. Furthermore, the fastening member has a pin shape that passes through both the adjacent plurality of assembly parts and the blocking part.

9. The battery pack according to claim 8, wherein, The blocking portion forms a curved surface at the location between the overlapping protrusions in the vertical direction, and the fastening member passes through the curved surface of the blocking portion.

10. The battery pack according to claim 9, wherein, A curved surface hole is formed in the curved surface of the blocking portion for the fastening member to pass through. An assembly member is disposed in the curved surface hole of the blocking portion, and the fastening member passes through the assembly member to be fastened.

11. The battery pack according to claim 10, wherein, The assembly component has a bushing shape and includes a flange and a neck. Furthermore, the neck of the bushing protrudes toward either of the assembly portions to temporarily secure the blocking portion and the assembly portion and prevent damage to the blocking portion during tightening.

12. The battery pack according to claim 1, wherein, A fixing recess is formed on one surface of any of the assembly parts, and the fixing recess is formed to correspond to the blocking part, such that the blocking part is installed in the fixing recess.

13. The battery pack according to claim 12, wherein, The blocking part is installed in the fixing recess, and the blocking part and the surface of the assembly part on which the blocking part is installed form the same plane.

14. The battery pack according to claim 1, wherein, The blocking part is made of refractory material.

15. A vehicle comprising a battery pack according to claim 1.

Images