Battery pack

Abstract

A battery pack is disclosed. A battery pack according to an embodiment of the present invention comprises: a base plate; an outer side wall protruding upward from the base plate; a battery array positioned on the base plate and comprising a plurality of battery cells; inner side walls covering the sides of the battery array and extending lengthwise in the front-rear direction; and an upper enclosure covering the front side of the battery array and extending lengthwise in the left-right direction.

Description

battery pack

[0001] The present invention relates to a battery pack.

[0002] This application claims priority to Korean Patent Application No. 10-2023-0120716, filed on September 11, 2023, the entire disclosure of which is incorporated herein by reference.

[0003] As demand for portable electronic products such as laptops, video cameras, and mobile phones rapidly increases and the commercialization of robots and electric vehicles becomes more widespread, research into high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.

[0005] These lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative electrode active materials, respectively. Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative electrode active materials, respectively, with a separator interposed between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.

[0006] In general, lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.

[0007] Recently, secondary batteries have been widely used for power and energy storage, not only in small devices like portable electronic devices but also in medium- to large-sized devices like electric vehicles and energy storage systems (ESS). Multiple secondary batteries can be electrically connected and housed within a module case to form a single battery module. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] For medium- to large-sized battery packs, such as those used in electric vehicles, the inclusion of a large number of battery cells and battery modules to increase output and / or capacity can significantly increase weight. This necessitates a structure that enhances the rigidity of the battery pack while also increasing energy density. Furthermore, a lightweight battery pack structure is required.

[0009] The present invention aims to solve the above-mentioned problems and other problems.

[0010] Another object of the present invention may be to provide a battery pack with improved assembly properties.

[0011] Another object of the present invention may be to provide a battery pack having improved energy density.

[0012] The present invention may provide a battery pack with reduced weight.

[0013] In order to achieve the above object, a battery pack according to an embodiment of the present invention may include: a base plate; an outer side wall protruding upward from the base plate; a battery array positioned on the base plate and including a plurality of battery cells; an inner side wall covering a side of the battery array and extending long in a front-back direction; and an upper enclosure covering a front side of the battery array and extending long in a left-right direction.

[0014] Additionally, the battery pack may further include a resin filling the battery array.

[0015] Additionally, the battery pack may further include an insulating member crossing the battery array.

[0016] Additionally, the battery pack may further include a cooling unit traversing the battery array.

[0017] Additionally, the upper enclosure includes a slot, and the cooling unit can be inserted into the slot.

[0018] Additionally, the cooling unit includes: a cooling tube extending across the battery array; and a head provided on the front side of the cooling tube, wherein the head can pass through the slot.

[0019] Additionally, the slot can be opened downwards.

[0020] Additionally, the battery pack may further include a lower enclosure positioned below the upper enclosure and coupled to the upper enclosure.

[0021] Additionally, the battery pack may further include a fastening member that fastens the lower enclosure to the upper enclosure.

[0022] Additionally, the lower enclosure can cover the lower portion of the slot.

[0023] Additionally, the upper enclosure may further include a protrusion protruding from the lower surface, and the lower enclosure may include a groove into which the protrusion is inserted.

[0024] Additionally, the lower enclosure may extend rearward and cover at least a portion of the battery array.

[0025] A vehicle according to one aspect of the present invention comprises a battery pack of the present invention.

[0026] According to at least one of the embodiments of the present invention, the rigidity of the battery pack can be improved.

[0027] According to at least one of the embodiments of the present invention, the energy density of a battery pack can be improved.

[0028] According to at least one of the embodiments of the present invention, the weight of the battery pack can be reduced.

[0029] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0030] FIG. 1 is a perspective view showing a battery pack according to one embodiment of the present invention.

[0031] FIG. 2 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention.

[0032] FIG. 3 is a drawing showing an inner side wall of a battery pack according to one embodiment of the present invention.

[0033] FIG. 4 is a drawing showing an inner side wall and a battery cell of a battery pack according to one embodiment of the present invention.

[0034] FIG. 5 is a diagram illustrating a partial configuration of a battery array of a battery pack according to an embodiment of the present invention.

[0035] FIG. 6 is a perspective view showing a battery array of a battery pack according to one embodiment of the present invention.

[0036] Figure 7 is an enlarged view of part A of Figure 6.

[0037] Fig. 8 is a drawing showing a part of a cross-sectional configuration along the cutting line B-B' of Fig. 6.

[0038] Fig. 9 is a drawing showing a part of the cross-sectional configuration along the cutting line C-C' of Fig. 6.

[0039] FIGS. 10 and 11 are drawings showing an upper enclosure of a battery pack according to one embodiment of the present invention.

[0040] FIGS. 12 and 13 are drawings showing a battery array and an upper enclosure of a battery pack according to one embodiment of the present invention.

[0041] Fig. 14 is a drawing showing a part of a cross-sectional configuration along the cutting line D-D' of Fig. 13.

[0042] FIG. 15 is a diagram illustrating a configuration of a battery pack according to an embodiment of the present invention, viewed from below.

[0043] FIG. 16 is a perspective view of a battery pack according to an embodiment of the present invention viewed from the rear.

[0044] FIG. 17 is a diagram illustrating a configuration of a battery pack according to an embodiment of the present invention, viewed from below.

[0045] FIGS. 18 and 19 are drawings showing a battery array and a lower enclosure of a battery pack according to one embodiment of the present invention.

[0046] FIGS. 20 and 21 are views from below of a portion of a battery pack according to an embodiment of the present invention.

[0047] FIG. 22 is a perspective view showing a part of a configuration of a battery pack according to one embodiment of the present invention.

[0048] Fig. 23 is a drawing showing a part of a cross-sectional configuration along the cutting line G-G' of Fig. 22.

[0049] Figure 24 is an enlarged view of part H of Figure 23.

[0050] Figure 25 is an enlarged view of part I of Figure 23.

[0051] FIG. 26 is a drawing showing a battery array of a battery pack according to one embodiment of the present invention.

[0052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0053] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0054] FIG. 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention in isolation. Referring to FIGS. 1 and 2, a battery pack according to an embodiment of the present invention may include a base plate (100), an outer side wall (200), a battery array (300), an inner side wall (330), and an upper enclosure (320).

[0055] The base plate (100) may have a flat shape. The base plate (100) may have a roughly rectangular shape.

[0056] The outer side wall (200) can protrude upward from the base plate (100). The outer side wall (200) can be fastened, joined, fixed, or attached to the upper surface of the base plate (100). The outer side wall (200) and the base plate (100) can form an internal space.

[0057] A battery array (300) may be accommodated in an internal space. The battery array (300) may include a plurality of battery cells (310). The plurality of battery cells (310) may be arranged to form an array. The battery array (300) may be positioned on a base plate (100). In this case, the battery cells (310) may refer to secondary batteries. In addition, the battery cells (310) may be secondary batteries having a cylindrical shape. The battery array (300) may have a rectangular parallelepiped shape.

[0058] The inner side wall (330) may include a wall body (331) that extends in the X-axis direction or the front-back direction. The inner side wall (330) may cover a side of the battery array (300). The inner side wall (330) may cover at least a portion of the outermost battery cells (310) of the battery array (300). The inner side walls (330) may be provided in pairs. At least a portion of the plurality of battery cells (310) may be fixed to the inner side wall (330). The inner side wall (330) may be fastened, coupled, fixed, or attached to the base plate (100) or the outer side wall (200). The inner side wall (330) may be positioned between the plurality of battery cells (310) and the outer side wall (200).

[0059] The upper enclosure (320) may include a body (321). The body (321) may be elongated in the Y-axis direction or the left-right direction. The upper enclosures (320) may be provided as a pair. The upper enclosures (320) may cover the front and rear sides of the battery array (300), respectively. The upper enclosure (320) may cover at least some of the outermost battery cells (310) of the battery array (300). At least some of the plurality of battery cells (310) may be fixed to the upper enclosure (320). The upper enclosure (320) may be fastened, coupled, fixed, or attached to the base plate (100) or the outer side wall (200). The upper enclosure (320) may be positioned between the plurality of battery cells (310) and the outer side wall (200).

[0060] A pair of inner side walls (330) and a pair of upper enclosures (320) can cover the perimeter of the battery array (300).

[0061] According to this configuration of the present invention, the battery array (300) can be stably supported and fixed. The inner side wall (330) and the upper enclosure (320) can enhance the rigidity and alignment of the battery array (300). As a result, the overall rigidity and safety of the battery pack can be improved.

[0062] It can accommodate multiple battery cells (310). The inner side wall (330) can stably support multiple battery cells (310). This can improve the rigidity of the battery pack.

[0063] Referring to FIGS. 1 and 2, a battery pack according to an embodiment of the present invention may include a busbar assembly (400) and a pack cover (500). The pack cover (500) may cover an internal space of the battery pack. The pack cover (500) may have a plate shape. The pack cover (500) may have a shape similar to that of the base plate (100). The pack cover (500) may be fastened, coupled, fixed, or attached to the outer side wall (200).

[0064] The busbar assembly (400) may be positioned between the battery array (300) and the pack cover (500). The busbar assembly (400) may be physically connected to the upper side of a plurality of battery cells (310). In addition, the busbar assembly (400) may be electrically connected to the plurality of battery cells (310).

[0065] A venting device (600) may be provided on the outer surface of the outer side wall (200). When the pressure inside the battery pack increases, the venting device (600) may expel gas.

[0066] FIG. 3 is a drawing showing an inner side wall (330) of a battery pack according to an embodiment of the present invention. FIG. 4 is a drawing showing an inner side wall (330) and battery cells (310) of a battery pack according to an embodiment of the present invention. Referring to FIGS. 3 and 4, at least some of the plurality of battery cells (310) of the battery pack according to an embodiment of the present invention may be fixed to the inner side wall (330). The inner side wall (330) may include wall heads (332) at both ends in the X-axis direction. The wall heads (332) may have slots (337). The inner side wall (330) may include bottom ribs (333) protruding inwardly. In addition, the inner side wall (330) may include top ribs (334) protruding inwardly. The top rib (334) may be positioned above the bottom rib (333). A plurality of battery cells (310) may be fixed between the bottom rib (333) and the top rib (334). The inner side wall (330) may include a curved portion (336) formed on the inside. The curved portion (336) may be bent along the side of the battery cell (310). The curved portion (336) may support the side of the battery cell (310). The inner side wall (330) may include a plurality of compartments (335) protruding inwardly. Each compartment (335) may protrude between the plurality of battery cells (310).

[0067] According to this configuration of the present invention, a plurality of battery cells (310) can be stably fixed and supported by the inner side wall (330). As a result, the rigidity of the battery pack can be improved.

[0068] FIG. 5 is a diagram illustrating a portion of a battery array (300) of a battery pack according to an embodiment of the present invention in isolation. FIG. 6 is a perspective view illustrating a battery array (300) of a battery pack according to an embodiment of the present invention. FIG. 7 is an enlarged view of portion A of FIG. 6. FIG. 8 is a diagram illustrating a portion of a cross-sectional configuration taken along the cutting line B-B' of FIG. 6. FIG. 9 is a diagram illustrating a portion of a cross-sectional configuration taken along the cutting line C-C' of FIG.

[0069] Referring to FIGS. 5 to 9, a battery array (300) according to an embodiment of the present invention may include a cooling unit (340). The cooling unit (340) may be elongated in the X-axis direction or the front-back direction. The cooling unit (340) may cross the battery array (300). In addition, the cooling unit (340) may partition a plurality of battery cells (310). The cooling unit (340) may be in contact with the plurality of battery cells (310). The cooling unit (340) may be provided in plurality. A cooling liquid or a cooling gas may flow through the cooling unit (340). The cooling unit (340) may include a head (341) and a first cooling tube (342). The first cooling tube (342) may be elongated in the X-axis direction or the front-back direction. The head (341) may be provided on the front side of the first cooling tube (342). The tail (343) may be provided on the rear side of the first cooling tube (342). The first cooling tube (342) may include a flexible material. The first cooling tube (342) may be bent along the side of the battery cell (310). The first cooling tube (342) may include a plurality of flow paths. Cooling fluid may flow through the first cooling tube (342). The cooling fluid may flow and circulate through the head (341), the first cooling tube (342), and the tail (343).

[0070] According to this configuration of the present invention, the cooling effect of the battery array (300) can be increased. The cooling unit (340) can effectively cool the battery cell (310) by increasing the contact area with the battery cell (310).

[0071] In addition, according to this configuration of the present invention, the weight of the battery array (300) can be reduced. Since the battery array (300) includes a lightweight cooling unit (340), the energy density of the battery pack can be improved.

[0072] Referring to FIGS. 5 to 9, a battery array (300) according to an embodiment of the present invention may include an insulating member (350). The insulating member (350) may extend in the X-axis direction or the front-back direction. The insulating member (350) may cross the battery array (300). In addition, the insulating member (350) may partition a plurality of battery cells (310). The insulating member (350) may be in contact with the plurality of battery cells (310). The insulating member (350) may be provided in plurality. The insulating member (350) may include a flexible material. The insulating member (350) may electrically insulate the plurality of battery cells (310). In addition, the insulating member (350) may be composed of a flame retardant material. For example, the insulating member (350) may include a polycarbonate sheet or ceramic wool.

[0073] The cooling unit (340) and the insulating member (350) may be arranged alternately. A pair of inner side walls (330) may be arranged at the outermost edge of the battery array (300).

[0074] According to this configuration of the present invention, the electrical safety of the battery array (300) can be improved.

[0075] In addition, according to this configuration of the present invention, the weight of the battery array (300) can be reduced. Since the battery array (300) includes a lightweight insulating member (350), the energy density of the battery pack can be improved.

[0076] Referring to FIGS. 5 to 9, a battery array (300) according to one embodiment of the present invention may be filled with a resin (700). The resin (700) may mutually couple, fix, or attach components of the battery array (300).

[0077] According to this configuration of the present invention, the rigidity of the battery array (300) can be improved.

[0078] In addition, according to this configuration of the present invention, the weight of the battery array (300) can be reduced by combining the components of the battery array (300) with the resin (700) instead of combining them with a heavy connecting structure or connecting member (S). As a result, the energy density of the battery pack can be improved.

[0079] FIGS. 10 and 11 are views showing an upper enclosure (320) of a battery pack according to an embodiment of the present invention. FIGS. 12 and 13 are views showing a battery array (300) and an upper enclosure (320) of a battery pack according to an embodiment of the present invention. FIG. 14 is a view showing a part of a cross-sectional configuration taken along the line D-D' of FIG. 13. FIG. 15 is a view looking from below of a part of a battery pack according to an embodiment of the present invention. FIG. 16 is a perspective view looking from the rear of a battery pack according to an embodiment of the present invention. FIG. 17 is a view looking from below of a part of a battery pack according to an embodiment of the present invention.

[0080] Referring to FIGS. 10 to 17, the upper enclosure (320) of the battery pack according to one embodiment of the present invention may include a slot (324). A plurality of slots (324) may be provided. The slots (324) may be arranged along the Y-axis direction. A cooling unit (340) may be inserted, coupled, mounted, or fixed into the slot (324).

[0081] According to this configuration of the present invention, the cooling unit (340) can be stably positioned and fixed.

[0082] Referring to FIGS. 10 to 17, a cooling unit (340) of a battery pack according to an embodiment of the present invention can pass through a slot (324) of an upper enclosure (320). A head (341) can be inserted into the slot (324) of the front-side upper enclosure (320). A tail (343) can be inserted into the slot (324) of the rear-side upper enclosure (320).

[0083] According to this configuration of the present invention, the cooling unit (340) can be stably positioned and fixed.

[0084] Referring to FIGS. 10 to 17, the slot (324) of the upper enclosure (320) of the battery pack according to one embodiment of the present invention may have a shape that is open downward. In addition, the slot (324) may have a shape that is elongated in the Z-axis direction. The upper enclosure (320) may be assembled with the cooling unit (340) by moving in the -Z-axis direction or downward. The front-side upper enclosure (320) may be assembled with the head (341) by moving in the -Z-axis direction or downward. In addition, the rear-side upper enclosure (320) may be assembled with the tail (343) by moving in the -Z-axis direction or downward.

[0085] According to this configuration of the present invention, the assemblability of the battery pack can be improved.

[0086] Referring to FIGS. 10 to 17, an upper enclosure (320) of a battery pack according to an embodiment of the present invention may include a first curved portion (322) and a second curved portion (323). The first curved portion (322) and the second curved portion (323) may be provided on the rear side of the upper enclosure (320) on the front side. In addition, the first curved portion (322) and the second curved portion (323) may be provided on the front side of the upper enclosure (320) on the rear side. The first curved portion (322) and the second curved portion (323) may be bent along the side shape of the battery cell (310). As a result, the upper enclosure (320) may stably support the battery array (300).

[0087] FIGS. 18 and 19 are views showing a battery array (300) and a lower enclosure (326) of a battery pack according to an embodiment of the present invention. FIGS. 20 and 21 are views showing a portion of a battery pack according to an embodiment of the present invention viewed from below. Referring to FIGS. 18 to 21, a battery pack according to an embodiment of the present invention may include a lower enclosure (326) positioned below an upper enclosure (320) and coupled to the upper enclosure (320). The lower enclosure (326) may be coupled, fastened, fixed, or attached to a lower surface of the upper enclosure (320). The lower enclosure (326) may extend lengthwise along the upper enclosure (320). Alternatively, the lower enclosure (326) may extend lengthwise in the left-right direction or the Y-axis direction. The lower enclosures (326) may be provided as a pair. The front side lower enclosure (326) can be coupled to the front side upper enclosure (320). The rear side lower enclosure (326) can be coupled to the rear side upper enclosure (320).

[0088] According to this configuration of the present invention, the cooling unit (340) can be stably positioned and fixed by combining the upper enclosure (320) and the lower enclosure (326). As a result, the rigidity of the battery array (300) can be improved.

[0089] Referring to FIGS. 18 to 21, a battery pack according to an embodiment of the present invention may include a fastening member (S) that fastens a lower enclosure (326) to an upper enclosure (320). The fastening member (S) may extend in a vertical direction or a Z-axis direction. A plurality of fastening members (S) may be provided. The fastening members (S) may be arranged along a left-right direction or a Y-axis direction. The fastening members (S) may penetrate the lower enclosure (326). At least a portion of the fastening member (S) may be inserted into the interior of the upper enclosure (320).

[0090] According to this configuration of the present invention, the assemblability of the battery array (300) can be improved.

[0091] Referring to FIGS. 18 to 21, the lower enclosure (326) of the battery pack according to one embodiment of the present invention may cover the lower portion of the slot (324). The front-side lower enclosure (326) may cover the lower portion of the slot (324) and the lower portion of the head (341). In addition, the rear-side lower enclosure (326) may cover the lower portion of the slot (324) and the lower portion of the tail (343).

[0092] According to this configuration of the present invention, the cooling unit (340) can be stably positioned and fixed by combining the upper enclosure (320) and the lower enclosure (326). As a result, the rigidity of the battery array (300) can be improved.

[0093] Fig. 22 is a perspective view showing a portion of a battery pack according to an embodiment of the present invention. Fig. 23 is a drawing showing a portion of a cross-sectional configuration taken along the section line G-G' of Fig. 22. Fig. 24 is an enlarged view of portion H of Fig. 23. Fig. 25 is an enlarged view of portion I of Fig. 23.

[0094] Referring to FIGS. 22 to 25, the upper enclosure (320) of the battery pack according to one embodiment of the present invention may include a protrusion (325) protruding from the lower surface. In addition, the lower enclosure (326) may include a groove (327) into which the protrusion (325) is inserted.

[0095] Conversely, the lower enclosure (326) may include a protrusion protruding from the upper surface, and the upper enclosure (320) may include a groove into which the protrusion is inserted.

[0096] Additionally, it may include additional components such as gaskets, glue, or Cured In Place Gaskets (CIPG) placed between the upper enclosure (320) and the lower enclosure (326).

[0097] According to these components of the present invention, the sealing between the upper enclosure (320) and the lower enclosure (326) can be improved. As a result, when venting gas or ignitable particles are discharged from the battery array (300), venting control can be facilitated.

[0098] Referring to FIGS. 22 to 25, a lower enclosure (326) of a battery pack according to an embodiment of the present invention may extend inwardly and cover at least a portion of a battery array (300). The front-side lower enclosure (326) may extend rearwardly and cover at least a portion of the battery array (300) or the battery cells (310). Alternatively, the front-side lower enclosure (326) may extend rearwardly and support at least a portion of the battery array (300) or the battery cells (310). The rear-side lower enclosure (326) may extend forwardly and cover at least a portion of the battery array (300) or the battery cells (310). Alternatively, the rear-side lower enclosure (326) may extend forwardly and support at least a portion of the battery array (300) or the battery cells (310).

[0099] According to this configuration of the present invention, the battery array (300) can be spaced apart from the base plate (100). In addition, the plurality of battery cells (310) can be spaced apart from the base plate (100). As a result, the plurality of battery cells (310) and the base plate (100) can be more reliably electrically insulated. As a result, the electrical safety of the battery pack can be improved.

[0100] Furthermore, according to this configuration of the present invention, the battery array (300) can secure a space for venting at the bottom. The space between the battery array (300) and the base plate (100) can be used as a space for venting. This can improve the thermal safety of the battery pack.

[0101] FIG. 26 is a drawing showing a battery array (300) of a battery pack according to an embodiment of the present invention. Referring to FIG. 26, the battery array (300) of the battery pack according to an embodiment of the present invention may include a plurality of battery cells (310), an upper enclosure (320), a lower enclosure (326), an inner side wall (330), and a plurality of battery cells (310). In addition, the battery array (300) may additionally include a second cooling tube (344). The second cooling tube (344) may connect a plurality of heads (341). Cooling fluid may be supplied to each head (341) through the second cooling tube (344). In addition, cooling fluid discharged from each head (341) may be discharged to the outside of the battery pack through the second cooling tube (344).

[0102] A vehicle according to the present invention may include the battery pack described above. The battery pack according to the present invention may be applied to vehicles such as electric vehicles or hybrid vehicles. Furthermore, the vehicle according to the present invention may further include various other components, in addition to the battery pack. For example, the vehicle according to the present invention may further include a body, a motor, a control device such as an electronic control unit (ECU), and the like.

[0103] Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, back, inner, and outer are used, but these terms are only for convenience of explanation, and it is obvious to those skilled in the art that these terms may vary depending on the location of the target object or the location of the observer.

[0104] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. Base plate; An outer side wall protruding upward from the base plate; A battery array positioned on the base plate and comprising a plurality of battery cells; An inner side wall that covers the side of the above battery array and extends long in the front-back direction; and A battery pack comprising an upper enclosure that covers the front side of the battery array and extends in the left-right direction.

2. In paragraph 1, A battery pack further comprising a resin filling the above battery array.

3. In paragraph 1, A battery pack further comprising an insulating member crossing the battery array.

4. In paragraph 1, A battery pack further comprising a cooling unit traversing the battery array.

5. In paragraph 4, The above upper enclosure, Includes slots, The above cooling unit, A battery pack inserted into the above slot.

6. In paragraph 5, The above cooling unit: A cooling tube crossing the above battery array; and, Including a head provided on the front side of the above cooling tube, The above head, Battery pack passing through the above slot.

7. In paragraph 5, The above slot is, Battery pack that opens downwards.

8. In paragraph 7, A battery pack further comprising a lower enclosure positioned below the upper enclosure and coupled to the upper enclosure.

9. In paragraph 8, A battery pack further comprising a fastening member for fastening the lower enclosure to the upper enclosure.

10. In paragraph 8, The above lower enclosure, A battery pack covering the lower part of the above slot.

11. In paragraph 8, The above upper enclosure, Including further protrusions on the lower surface, The above lower enclosure, A battery pack including a groove into which the above protrusion is inserted.

12. In paragraph 8, The above lower enclosure, A battery pack extending rearwardly and covering at least a portion of the battery array.

13. A vehicle comprising a battery pack according to any one of claims 1 to 12.

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