Battery pack

Abstract

The present disclosure may provide a battery pack comprising: a power storage device including battery cells; and a plate having a seating portion in which the power storage device is seated, wherein the plate has a through-hole in at least a partial region thereof, and at least a part of the through-hole is covered with a sealing material.

Description

battery pack

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

[0002] Recently, demand for mobile devices such as smartphones, tablet PCs, and wireless earphones has been increasing. Furthermore, with the development of electric vehicles, energy storage batteries, robots, and satellites in full swing, research is actively underway on high-performance secondary batteries capable of repeated charging and discharging as an energy source.

[0003] Currently commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries offer advantages over nickel-based batteries, including virtually no memory effect, free charging and discharging, a very low self-discharge rate, and high energy density.

[0004] Lithium secondary batteries can experience thermal runaway due to mechanical, electrical, or thermal abnormalities, or internal short circuits. If the separator between the anode and cathode of a lithium secondary battery is damaged, the stored electrochemical energy is spontaneously released along with heat generation when the cathode and anode come into contact.

[0005] Meanwhile, a battery pack may be defined as a storage device including one or more battery cells, a BMS (Battery Management System), various control devices (e.g., a cooling device), and a protection system. The battery pack may be described with reference to Patent Document 1. In the battery pack, the storage device may generally be mounted on a cooling plate. When thermal runaway occurs in a specific storage device, a large amount of heat is generated, and the heat may be conducted to other storage devices through the cooling plate. This process may cause a chain reaction of thermal runaway in the storage devices. To prevent this phenomenon, structures of multiple battery packs are proposed.

[0006] The present disclosure provides a battery pack capable of effectively preventing thermal propagation. Furthermore, the present disclosure provides a battery pack capable of effectively dissipating heat generated from battery cells. Furthermore, the present disclosure provides a battery pack that is lightweight yet possesses superior durability. Furthermore, the present disclosure provides a battery pack with improved airtightness.

[0007] Additionally, the present disclosure aims to provide an electrical device including one or more battery packs.

[0008] A battery pack according to one example of the present disclosure includes a storage device including a battery cell and a plate having a mounting portion on which the storage device is mounted, wherein the plate has a through hole in at least a portion of the plate, and the through hole can be at least partially covered with a sealant.

[0009] In a battery pack according to an example of the present disclosure, the through hole may be provided in an area that does not overlap with the mounting portion.

[0010] In a battery pack according to an example of the present disclosure, the plate may include a plurality of mounting portions, and a through hole may be provided between adjacent mounting portions.

[0011] In a battery pack according to an example of the present disclosure, the plate includes a plurality of through holes, and each of the through holes can be at least partially covered with a sealant.

[0012] In a battery pack according to an example of the present disclosure, the sealant may include an adhesive.

[0013] In a battery pack according to an example of the present disclosure, the through hole may be entirely covered with a sealant.

[0014] In one example of the present disclosure, a battery pack further includes a pack frame surrounding a storage device, wherein the pack frame can contact a sealing material in at least a portion of the area.

[0015] In a battery pack according to an example of the present disclosure, the pack frame may further include a groove portion in at least a portion of an area in contact with the sealant.

[0016] In a battery pack according to an example of the present disclosure, the sealant may fill at least a portion of the home portion.

[0017] In a battery pack according to an example of the present disclosure, the pack frame may include a groove portion that does not face the through hole.

[0018] A battery pack according to an example of the present disclosure further includes a fixing member, wherein the fixing member can jointly fix a plate and a pack frame.

[0019] In a battery pack according to an example of the present disclosure, the pack frame has a joining hole, the joining hole and the through hole face each other at least in a portion of the area, and the fixing member can pass through both the through hole provided in the plate and the joining hole provided in the pack frame to jointly fix the plate and the pack frame.

[0020] In a battery pack according to an example of the present disclosure, the pack frame further includes an additional hole and a sealing tape, and at least a portion of the additional hole can be covered by the sealing tape.

[0021] *In a battery pack according to an example of the present disclosure, the plates include a first plate having a plate shape and a second plate having a folded shape, and the first plate and the second plate can be connected by bonding.

[0022] In a battery pack according to an example of the present disclosure, the plates may further include a euro between at least a portion of the first plate and the second plate.

[0023] In a battery pack according to an example of the present disclosure, the plate may include a flow path in an area where no through hole is provided.

[0024] A battery pack according to an example of the present disclosure includes a thermally conductive layer on a mounting portion, and a storage device can be mounted on the thermally conductive layer.

[0025] In a battery pack according to an example of the present disclosure, the thermal conductive layer may have a thermal conductivity of 0.1 W / m·K or more.

[0026] In a battery pack according to an example of the present disclosure, the battery cells included in the storage device can be in direct contact with the thermally conductive layer.

[0027] An electric device according to an example of the present disclosure may include a battery pack, and at least a portion of the battery pack may be a battery pack according to an example of the present disclosure. A vehicle according to an example of the present disclosure may include a power unit including the battery pack and a power fixing member for fixing the power unit, wherein the battery pack includes a pack frame including a first frame coupling hole and a second frame coupling hole, wherein at least one selected from the group consisting of the first frame coupling hole and the second frame coupling hole faces a hole formed in at least a portion of the power fixing member, and a fastening member may pass through the hole of the power fixing member and at least one selected from the group consisting of the first frame coupling hole and the second frame coupling hole to fix the battery pack.

[0028] The present disclosure can provide a battery pack that effectively prevents thermal propagation. Furthermore, the present disclosure can provide a battery pack that effectively dissipates heat generated from battery cells. Furthermore, the present disclosure can provide a battery pack that is lightweight yet possesses superior durability. Furthermore, the present disclosure can provide a battery pack with improved airtightness.

[0029] Additionally, the present disclosure may provide an electrical device including one or more battery packs.

[0030] The drawings shown in this disclosure are according to examples of this disclosure, and the ratios of width, height, or depth of each component are for the purpose of explaining this disclosure in detail, and these ratios may differ from the actual ones. In addition, in the coordinate system shown in the drawings, each axis may be perpendicular to each other, and the direction pointed by the arrow may be the + direction, and the direction opposite to the direction pointed by the arrow (rotated by 180 degrees) may be the - direction.

[0031] FIG. 1 is a simplified diagram illustrating a portion of a structure of a battery pack according to an example of the present disclosure.

[0032] FIG. 2 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the XZ plane in FIG. 1.

[0033] FIG. 3 is a simplified diagram illustrating a portion of a structure of a battery pack according to an example of the present disclosure, and is a drawing illustrating another example of FIG. 2.

[0034] FIG. 4 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the XY plane in FIG. 1.

[0035] FIG. 5 is a simplified diagram illustrating a portion of a structure of a battery pack according to an example of the present disclosure, and is a drawing illustrating another example of FIG. 4.

[0036] FIG. 6 is a simplified drawing showing a part of the structure of a pack frame of a battery pack according to an example of the present disclosure.

[0037] FIG. 7 is a simplified diagram illustrating a portion of the structure of a battery pack according to an example of the present disclosure.

[0038] FIG. 8 is a simplified diagram illustrating a portion of the structure of a battery pack according to an example of the present disclosure.

[0039] FIG. 9 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the appearance along the XZ plane in FIG. 8.

[0040] FIG. 10 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the appearance along the XZ plane in FIG. 8.

[0041] FIG. 11 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the appearance along the XZ plane in FIG. 8.

[0042] FIG. 12 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the appearance along the XZ plane in FIG. 8.

[0043] FIG. 13 is a simplified diagram showing a part of the structure of a plate of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the appearance along the XZ plane in FIG. 1.

[0044] FIG. 14 is a simplified diagram showing a part of the structure of a battery pack according to an example of the present disclosure, and is a drawing showing a part of the XY plane in FIG. 1.

[0045] FIG. 15 is a simplified diagram illustrating a portion of the structure of a battery pack according to an example of the present disclosure.

[0046] FIG. 16 is a simplified diagram illustrating a portion of a structure of a battery pack according to an example of the present disclosure, and is a drawing illustrating another example of a portion of the shape along the XZ plane in FIG. 15.

[0047] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings. However, these are merely exemplary and the present disclosure is not limited to the specific embodiments described as examples.

[0048] Among the properties mentioned in this disclosure, if the measurement temperature affects the properties, the properties are properties measured at room temperature and pressure unless otherwise specified.

[0049] The term room temperature used in this disclosure refers to a natural temperature that is not heated or cooled, and may mean, for example, any temperature within the range of 10°C to 30°C, for example, a temperature that is about 15°C or higher, about 18°C ​​or higher, about 20°C or higher, about 23°C or higher, about 27°C or lower, or 25°C. Unless specifically defined in this disclosure, the unit of temperature is Celsius (°C).

[0050] Among the properties mentioned in this disclosure, if the measurement pressure affects the property, the property is a property measured at atmospheric pressure unless otherwise specified.

[0051] The term atmospheric pressure used in this disclosure refers to natural pressure that is neither pressurized nor depressurized, and typically refers to atmospheric pressure within the range of about 700 mmHg to 800 mmHg.

[0052] The terms a to b used in this disclosure mean a and b inclusive, and within a range between a and b. For example, including a to b by weight means including within a range of a to b by weight.

[0053] The terms thickness (or height), width and depth used in this disclosure mean average values ​​unless specifically stated otherwise, and measurements can be made according to a method known in the art using a measuring device capable of measuring thickness (or height), width and depth, respectively.

[0054] The present disclosure can provide a battery pack (1) that can effectively prevent the thermal propagation phenomenon (see FIG. 1). Furthermore, the present disclosure can provide a battery pack (1) that can effectively dissipate heat generated from a battery cell (210). Furthermore, the present disclosure can provide a battery pack (1) that is lightweight yet has excellent durability. Furthermore, the present disclosure can provide a battery pack (1) with improved airtightness.

[0055] FIG. 1 is a drawing briefly showing a part of the structure of a battery pack (1) according to an example of the present disclosure.

[0056] A battery pack (1) according to an example of the present disclosure may include a storage device (20) including a battery cell (210). In the present disclosure, the storage device (20) may be the battery cell (210) itself. Alternatively, the storage device (20) may be a battery cell (210) stack comprising a plurality of battery cells (210) that are electrically connected to each other. Alternatively, the storage device (20) may refer to a battery module that includes one or more battery cells (210) and includes a cover that can protect the battery cells (210) from external impact while housing them. However, in another example, even if the storage device (20) is built into the cover, the cover of the contact surface may not be provided so that one surface of the battery cell (210) can be in direct contact with the plate (10) or thermal conductive layer (50) described later (see FIG. 1 and FIG. 15).

[0057] In the above, the meaning of being electrically connected to each other may mean a state in which an electric circuit is formed when the objects to be connected are connected by a connecting means, so that current can flow to each of the connected objects. The connecting means is not particularly limited as long as it is capable of electrical connection, but may be direct contact between the objects to be connected or a wire through which current can flow. In the case where a plurality of battery cells (210) are provided in the storage device (20) and are electrically connected to each other, the battery cells (210) may be electrically connected to each other in series, parallel, or a combination thereof.

[0058] Meanwhile, in the battery pack (1) according to an example of the present disclosure, the structure of the battery cell (210) may be known. The battery cell (210) may have a structure in which an electrode assembly is embedded within an outer material and filled with an electrolyte. In another example, the battery cell (210) may include an electrode and a solid electrolyte layer, and the solid electrolyte layer may have a separator function. A battery cell (210) including the solid electrolyte layer may be referred to as an all-solid battery.

[0059] In a battery pack (1) according to an example of the present disclosure, the electrode assembly may include an electrode. The term "electrode" may encompass a positive electrode and a negative electrode. The electrode assembly may include a separator. The separator may be interposed between the positive electrode and the negative electrode.

[0060] The cathode may refer to a reduction electrode through which an electron transport material receives electrons when the battery cell (210) is discharged. The anode refers to an oxidation electrode through which an electron transport material transfers electrons when the battery cell (210) is discharged. In addition, the separator refers to a membrane through which an electron transport material passes while preventing an electrical short circuit between the anode and the cathode.

[0061] Additionally, the battery cell (210) may have a structure in which the electrode assembly is housed within a sealed space made of an outer material and filled with an electrolyte. The term "sealed space," as used herein, refers to a closed space that prevents liquid substances from leaking to the outside when present in the space.

[0062] The above electrolyte refers to a medium that facilitates the movement of electron transport substances to facilitate the electrochemical reaction between the positive and negative electrodes. The above electrolyte generally includes an organic solvent and a lithium salt, and the organic solvent and lithium salt may include those known in the art.

[0063] The above is classified into several types depending on the type of electron transport material. For example, if the electron transport material is lithium (including Li ions), the battery is called a lithium ion battery.

[0064] In addition, as described above, the outer packaging material can protect the electrode assembly from external impact and prevent the electrolyte from leaking out (i.e., sealing it). Depending on the shape of the outer packaging material, the battery cell (210) can be classified into a square shape, a cylindrical shape, or a pouch shape.

[0065] A battery pack (1) according to an example of the present disclosure may include a plate (10) having a mounting portion (110) on which the storage device (20) is mounted. Referring to FIG. 1, the battery pack (1) may include a plate (10) having a mounting portion (110) on which the storage device (20) is mounted. The shape of the plate (10) may be determined in consideration of the shape of the storage device (20). Although not limited to a specific shape, for example, if the surface where the storage device (20) and the plate (10) contact each other is a square, the overall shape of the plate (10) may be a square.

[0066] In a battery pack (1) according to an example of the present disclosure, the plate (10) may have a through hole (120) at least in a portion of the plate. One or more through holes (120) may be provided in the plate (10). In addition, the through hole (120) is a hole that penetrates the plate (10), and its shape is not particularly limited. When the plate (10) has the through hole (120), heat transfer through the plate (10) can be partially suppressed, effectively preventing a heat transfer phenomenon. Heat transfer through the plate (10) may mean conduction. Referring to FIG. 1, in the battery pack (1), the plate (10) may have a through hole (120) at least in a portion of the plate.

[0067] In a battery pack (1) according to an example of the present disclosure, at least a portion of a through hole (120) of a plate (10) may be covered with a sealant (130). That is, the battery pack (1) may include a sealant (130), and the sealant (130) may cover at least a portion of the through hole (120). In addition, the sealant (130) may cover at least a portion of a plurality of through holes (120), and may cover at least a portion of each through hole (120). In the present disclosure, covering a through hole (120) may mean covering the through hole (120) so as to reduce a penetrated area of ​​the through hole (120).

[0068] Meanwhile, in a battery pack (1) according to an example of the present disclosure, the through hole (120) of the plate (10) may be entirely covered with a sealant (130). That is, the battery pack (1) may include a sealant (130), and the sealant (130) may cover the entire through hole (120). In the above, the fact that the through hole (120) is entirely covered may mean that the entire penetrated area of ​​the through hole (120) is covered.

[0069] Fig. 2 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing a part of the structure along the XZ plane in Fig. 1. Fig. 3 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing another example of Fig. 2.

[0070] Referring to FIG. 2, in a battery pack (1) according to an example of the present disclosure, at least a portion of a through hole (120) of a plate (10) may be covered with a sealant (130) on at least one side. Specifically, referring to FIG. 2, in a battery pack (1) according to an example of the present disclosure, the through hole (120) of a plate (10) may be entirely covered with a sealant (130) on one side.

[0071] Referring to FIG. 3, in a battery pack (1) according to an example of the present disclosure, at least a portion of the through hole (120) of the plate (10) may be covered with a sealant (130) on both sides. Specifically, referring to FIG. 3, in a battery pack (1) according to an example of the present disclosure, the through hole (120) of the plate (10) may be completely covered with a sealant (130) on both sides.

[0072] FIG. 4 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing a part of the structure along the XY plane in FIG. 1. FIG. 5 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing another example of FIG. 4.

[0073] Referring to FIG. 4, in a battery pack (1) according to an example of the present disclosure, at least a portion of a through hole (120) of a plate (10) may be covered with a sealant (130). In addition, the sealant (130) may not only cover the through hole (120), but may also cover the surrounding area of ​​the through hole (120). In addition, for convenience of processing, the sealant (130) may be provided continuously without being interrupted as shown in FIG. 4, so as to cover at least a portion of the through hole (120).

[0074] Referring to FIG. 5, in a battery pack (1) according to an example of the present disclosure, the sealant (130) may cover not only the through hole (120) but also the plate (10) other than the area where the through hole (120) is formed. Specifically, the sealant (130) may cover at least one surface of the plate (10) other than the area where the through hole (120) is formed. In addition, the sealant (130) may further cover the outer surface of the plate (10). Referring to FIG. 5, the sealant (130) may further cover not only the through hole (120) but also the outer surface of the plate (10). In this way, when the sealant (130) covers not only the through hole (120) but also the plate (10) other than the area where the through hole (120) is formed, the plate (10) may be lightweight while ensuring excellent durability.

[0075] In a battery pack (1) according to an example of the present disclosure, the through hole (120) may be provided in an area that does not overlap with the mounting portion (110). Referring to FIG. 1, the through hole (120) may be provided in an area that does not overlap with the mounting portion (110). That is, the storage device (20) mounted on the mounting portion (110) may not be mounted on the through hole (120).

[0076] In a battery pack (1) according to an example of the present disclosure, the sealant (130) may be provided in an area that does not overlap with the mounting portion (110). Referring to FIG. 5, the sealant (130) covers the outer surface of the plate (10), and at the same time, the sealant (130) covers the through hole (120). Here, the mounting portion (110) may be provided in an area that does not overlap with the sealant (130). That is, the storage device (20) mounted on the mounting portion (110) may not be mounted on the sealant (130).

[0077] In a battery pack (1) according to an example of the present disclosure, a plate (10) may include a plurality of mounting portions (110). That is, a plurality of storage devices (20) may be mounted on each mounting portion (110) on the plate (10).

[0078] Meanwhile, in the battery pack (1) according to an example of the present disclosure, the through hole (120) may be provided between adjacent mounting portions (110). Referring to FIGS. 1, 4, and 5, the through hole (120) is provided between adjacent mounting portions (110). When the through hole (120) is provided between adjacent mounting portions (110) in the battery pack (1), the heat transfer phenomenon occurring in the battery cell (210) can be effectively prevented. For example, due to thermal runaway occurring in one storage device (20), heat can be transferred to another adjacent storage device (20) through the plate (10), and the through hole (120) acts as a resistance to heat transfer in the heat transfer path, so that the heat transfer phenomenon can be effectively prevented.

[0079] In a battery pack (1) according to an example of the present disclosure, the plate (10) may include a plurality of through holes (120), and each of the through holes (120) may be at least partially covered with a sealant (130). Referring to FIGS. 1, 4, and 5, the plate (10) includes a plurality of through holes (120), and each of the through holes (120) may be at least partially covered with a sealant (130). Furthermore, in another example, the plate (10) may include a plurality of through holes (120), and each of the through holes (120) may be entirely covered with a sealant (130).

[0080] In a battery pack (1) according to an example of the present disclosure, the sealant (130) may include an adhesive. The adhesive may be a resin having adhesive properties in itself or a resin that exhibits adhesive properties through a curing or polymerization reaction. In addition, the adhesive may be a room temperature curing type, a thermosetting type, a hot melt type, a pressure-sensitive type, a dehumidifying type, a water type, or a solvent type. In addition, the adhesive is not particularly limited as long as it exhibits adhesive properties at room temperature and can be used in the art, but may include at least one selected from the group consisting of epoxy resins, acrylic resins, urethane resins, phenol resins, vinyl-phenol resins, epoxy-phenol resins, polyvinyl acetate, polyester resins, glue, and starch. In addition, the adhesive may preferably include at least one selected from the group consisting of epoxy resins, acrylic resins, vinyl-phenol resins, and epoxy-phenol resins.

[0081] In a battery pack (1) according to an example of the present disclosure, the sealant (130) may have an appropriate viscosity at room temperature. The appropriate viscosity may mean a viscosity at which, when the sealant (130) is positioned as shown in FIG. 2 to cover the through hole (120), a portion of the sealant (130) passes through the through hole (120) and the shape of the sealant (130) is not collapsed.

[0082] *Figure 6 is a drawing that simply illustrates a part of the structure of a pack frame (40) of a battery pack (1) according to an example of the present disclosure. The battery pack (1) according to an example of the present disclosure may include a pack frame (40) that surrounds a storage device (20). When the battery pack (1) includes a plurality of storage devices (20), the pack frame (40) may surround each of the storage devices (20). The pack frame (40) may be configured by combining and connecting several members in consideration of the contents to be described later, or may be configured in an integral form through a process such as extrusion.

[0083] Referring to FIG. 6, a battery pack (1) according to an example of the present disclosure may include a first frame (410) and a second frame (420). In addition, the battery pack (1) may include a plurality of first frames (410) and a plurality of second frames (420). In addition, in the battery pack (1), the plurality of first frames (410) may be positioned parallel to each other, and the plurality of second frames (420) may be positioned parallel to each other. In addition, in the battery pack (1), the first frame (410) and the second frame (420) may be connected to each other. The first frame (410) and the second frame (420) may be connected to each other through welding, bonding (such as brazing), adhesion, or a fastening means (such as rivets or bolts / nuts).

[0084] Also, referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the first frame (410) may be positioned along a first direction, and the second frame (420) may be positioned along a second direction. The first direction and the second direction may be different directions, for example, referring to FIG. 6, the first direction may be the y direction and the second direction may be the x direction. Also, the angle formed by the first direction and the second direction may be determined according to the shape of the storage device (20), and may be, for example, perpendicular to each other (see FIG. 6).

[0085] In addition, referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a space (430) formed by a first frame (410) and a second frame (420). The first frame (410) and the second frame (420) may be connected to each other so that the storage device (20) positioned on the plate (10) of the battery pack (1) enters the formed space (430). That is, the first frame (410) and the second frame (420) may be connected so that the storage device (20) is surrounded by the first frame (410) and the second frame (420).

[0086] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a first separating frame (410a) that divides a zone across a space (430) formed by the first frame (410) and the second frame (420). In addition, the pack frame (40) may include a second separating frame (420a) that divides a zone across a space (430) formed by the first frame (410) and the second frame (420). In addition, the pack frame (40) may include a first separating frame (410a) and a second separating frame (420a).

[0087] Also, referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the first separation frame (410a) may be positioned along a third direction, and the second separation frame (420a) may be positioned along a fourth direction. The third direction and the fourth direction may be different directions, for example, referring to FIG. 6, the third direction may be the y direction and the fourth direction may be the x direction. Also, an angle formed by the third direction and the fourth direction may be determined depending on the shape of the storage device (20), and may be, for example, perpendicular to each other (see FIG. 6).

[0088] Meanwhile, in the battery pack (1) according to an example of the present disclosure, the first separation frame (410a) of the pack frame (40) may be positioned parallel to the first frame (410). That is, the first direction and the third direction may be the same direction. In addition, the second separation frame (420a) of the pack frame (40) may be positioned parallel to the second frame (420). That is, the second direction and the fourth direction may be the same direction.

[0089] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, at least a portion of a first frame (410) and at least a portion of a second separating frame (420a) may be connected to each other. For example, the first frame (410) and the second separating frame (420a) may be connected through welding, bonding (brazing, etc.), adhesive, or a fastening means (for example, a rivet or a bolt / nut, etc.). In addition, in the battery pack (1), at least a portion of a second frame (420) and at least a portion of a first separating frame (410a) may be connected to each other. For example, the second frame (420) and the first separating frame (410a) may be connected through welding, bonding (brazing, etc.), adhesive, or a fastening means (for example, a rivet or a bolt / nut, etc.).

[0090] Also, referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a plurality of first separation frames (410a) and a plurality of second separation frames (420a). At least some of the first separation frames (410a) may be connected to at least some of the second separation frames (420a), and may be connected, for example, by welding, bonding (brazing, etc.), adhesive, or fastening means (for example, rivets or bolts / nuts, etc.). Specifically, referring to FIG. 6, in the battery pack (1), the pack frame (40) includes two first separation frames (410a) and two second separation frames (420a), and each of the first separation frames (410a) is connected to a respective second frame (420) positioned in parallel and is also connected to the second separation frame (420a). In addition, each of the second separation frames (420a) is connected to each of the first frames (410) positioned in parallel and is also connected to the first separation frame (410a). Through the positional arrangement of the first separation frame (410a) and the second separation frame (420a), each space (430) into which the storage device (20) can enter can be formed.

[0091] Referring to FIG. 6, the pack frame (40) forms the skeleton of the battery pack (1) with the first frame (410) and the second frame (420), and can form each space (430) into which the storage device (20) can enter through the first separation frame (410a) and the second separation frame (420a). The pack frame (40) is mounted on the plate (10), and the storage device (20) mounted on the mounting portion of the plate (10) can pass through each space (430) of the pack frame (40) and ultimately surround each storage device (20).

[0092] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first separation frame (410a) of a pack frame (40) may include a first internal separation frame (410a-1). The first internal separation frame (410a-1) may be connected to an area where the first separation frame (410a) is to be mounted on the plate (10). The first separation frame (410a) and the first internal separation frame (410a-1) may be connected to each other, and may be connected, for example, by welding, bonding (such as brazing), adhesion, or a fastening means (such as a rivet or a bolt / nut).

[0093] Also, referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first internal separation frame (410a-1) of a pack frame (40) may be connected to the first separation frame (410a) so as to protrude from at least one surface of the first separation frame (410a). Specifically, referring to FIG. 6, the first internal separation frame (410a-1) may be positioned so as to protrude in the x direction from the first separation frame (410a) provided in the longitudinal direction of the y direction.

[0094] In addition, referring to FIG. 6, the first separation frame (410a) may include a plurality of first internal separation frames (410a-1). For example, referring to FIG. 6, the first separation frame (410a) provided in the longitudinal direction of the y direction may include a first internal separation frame (410a-1) protruding in the -x direction and a first internal separation frame (410a-1) protruding in the +x direction.

[0095] In a battery pack (1) according to an example of the present disclosure, if the first separation frame (410a) of the pack frame (40) includes a first internal separation frame (410a-1), excellent durability can be secured.

[0096] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first internal separation frame (410a-1) of a pack frame (40) may include an additional hole (410a-h). A plurality of the additional holes (410a-h) may be provided. In addition, the additional holes (410a-h) may penetrate the first internal separation frame (410a-1). If the first internal separation frame (410a-1) includes the additional hole (410a-h), when the pack frame (40) comes into contact with the sealant (30), the sealant (30) fills at least a portion of the additional hole (410a-h) and is fixedly bonded, thereby ensuring superior durability.

[0097] In a battery pack (1) according to an example of the present disclosure, the second separation frame (420a) of the pack frame (40) may also include a second internal separation frame (not shown), similar to the first internal separation frame (410a-1) of the first separation frame (410a). The second internal separation frame may be connected to an area where the second separation frame (420a) is to be mounted on the plate (10). The second separation frame (20a) and the second internal separation frame may be connected to each other, for example, by welding, bonding (such as brazing), adhesion, or a fastening means (such as a rivet or a bolt / nut).

[0098] The second inner separation frame of the above pack frame (40) may be connected to the second separation frame (420a) so as to protrude from at least one side of the second separation frame (420a). Referring to Fig. 6, the second inner separation frame may be positioned so as to protrude in the y direction from the second separation frame (420a) provided in the longitudinal direction of the x direction, although not shown.

[0099] In addition, the second separation frame (420a) may include a plurality of second internal separation frames. For example, referring to FIG. 6, the second separation frame (420a) provided in the longitudinal direction of the x direction may include a second internal separation frame protruding in the -y direction and the second internal separation frame protruding in the +y direction.

[0100] In a battery pack (1) according to an example of the present disclosure, if the second separation frame (420a) of the pack frame (40) includes a second internal separation frame, excellent durability can be secured.

[0101] Meanwhile, in the battery pack (1) according to an example of the present disclosure, the second internal separation frame of the pack frame (40) may include an additional hole, such as the additional hole (410a-h) of the first internal separation frame (410a-1). The second internal separation frame may have a plurality of additional holes, and may penetrate the second internal separation frame. If the second internal separation frame includes the additional holes as described above, when the pack frame (40) comes into contact with the sealant (30), the sealant (30) fills at least a portion of the additional hole and is fixedly bonded, thereby ensuring superior durability.

[0102] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first frame (410) in a pack frame (40) may include a first inner frame (410c) connected to an area to be mounted on a plate (10) toward each space (430) in which a storage device (20) may enter. The first frame (410) and the first inner frame (410c) may be connected to each other, and may be connected, for example, by welding, bonding (such as brazing), adhesion, or a fastening means (such as a rivet or a bolt / nut).

[0103] Referring to FIG. 6, in the battery pack (1), the first inner frame (410c) of the pack frame (40) may be connected to protrude from one side of the first frame (410). Specifically, referring to FIG. 6, the first inner frame (410c) may be positioned to protrude in the x direction from the first frame (410) provided in the longitudinal direction of the y direction.

[0104] Also, referring to FIG. 6, the first frame (410) may include a plurality of first internal frames (410c), and if there are a plurality of first frames (410), each of the first frames (410) may include one or more first internal frames (410c).

[0105] In a battery pack (1) according to an example of the present disclosure, if the first frame (410) of the pack frame (40) includes a first inner frame (410c), excellent durability can be secured.

[0106] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first inner frame (410c) of a pack frame (40) may include additional holes (410c-h). A plurality of the additional holes (410c-h) may be provided. In addition, the additional holes (410c-h) may penetrate the first inner frame (410c). If the first inner frame (410c) includes the additional holes (410c-h), when the pack frame (40) comes into contact with the sealant (30), the sealant (30) fills at least a portion of the additional holes (410c-h) and is fixedly bonded, thereby ensuring superior durability.

[0107] In a battery pack (1) according to an example of the present disclosure, the second frame (420) of the pack frame (40) may also include a second internal frame (not shown), similar to the first internal frame (410c) of the first frame (410). The second internal frame of the pack frame (40) may be connected to protrude from one surface of the second frame (420). Specifically, referring to FIG. 6, the second internal frame (not shown) may be positioned to protrude in the y direction from the second frame (420) provided in the longitudinal direction of the x direction.

[0108] Also, referring to FIG. 6, the second frame (420) may include a plurality of second internal frames, and if there are a plurality of second frames (420), each second frame (420) may include one or more second internal frames.

[0109] In a battery pack (1) according to an example of the present disclosure, if the second frame (420) of the pack frame (40) includes a second internal frame, excellent durability can be secured.

[0110] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a second inner frame of a pack frame (40) may include an additional hole (not shown) such as an additional hole (410c-h) of the first inner frame (410c). In addition, the additional hole may penetrate the second inner frame. If the second inner frame includes the additional hole, when the pack frame (40) comes into contact with a sealant (30), the sealant (30) fills at least a portion of the additional hole and is fixedly bonded, thereby ensuring superior durability.

[0111] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a first auxiliary frame (410b) connected to an outer surface of a first frame (410). In addition, the pack frame (40) may include a second auxiliary frame (420b) connected to an outer surface of a second frame (420). The first frame (410) and the first auxiliary frame (410b) and the second frame (420) and the second auxiliary frame (420b) may be connected to each other, and may be independently connected to each other, for example, by welding, bonding (brazing, etc.), adhesive, or fastening means (for example, rivets or bolts / nuts, etc.). The positional relationship between the first frame (410) and the first auxiliary frame (410b) can be seen with reference to FIG. 16, and the positional relationship between the second frame (420) and the second auxiliary frame (420b) to be described later can also be sufficiently understood by those skilled in the art through FIG. 16.

[0112] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the first auxiliary frame (410b) and the second auxiliary frame (420b) may be independently hollow to reduce weight, and may have a pipe shape with a cross-section of a triangle, a square, a circle, an oval, etc. In addition, the first auxiliary frame (410b) may be formed along the outer surface of the first frame (410), and the second auxiliary frame (420b) may be formed along the outer surface of the second frame (420). In this case, the first auxiliary frame (410b) and the second auxiliary frame (420b) may be configured to overlap each other so that structural interference does not occur.

[0113] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a plurality of first auxiliary frames (410b) and a plurality of second auxiliary frames (420b). Specifically, the pack frame (40) may include a plurality of first frames (410), and each of the first frames (410) may be connected to at least one first auxiliary frame (410b). In addition, each of the second frames (420) may be connected to at least one second auxiliary frame (420b).

[0114] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first frame (410) may include a first inner frame (410c), and the first auxiliary frame (410b) may be connected to the first frame (410). The first inner frame (410c) and the first auxiliary frame (410b) may be provided so as not to overlap each other. For example, the first inner frame (410c) may be connected to an inner surface of the first frame (410), and the first auxiliary frame (410b) may be connected to an outer surface of the first frame (410). In addition, in the battery pack (1), a second frame (420) may include a second inner frame, and the second auxiliary frame (420b) may be connected to the second frame (420). The second inner frame and the second auxiliary frame (420b) may be provided so as not to overlap each other. For example, the second inner frame may be connected to the inner surface of the second frame (420), and the second auxiliary frame (420b) may be connected to the outer surface of the second frame (420).

[0115] Referring to FIG. 6, in a battery pack (1) according to an example of the present disclosure, a first auxiliary frame (410b) of a pack frame (40) may include one or more first frame coupling holes (410b-h). The first frame coupling holes (410b-h) may penetrate the first auxiliary frame (410b). The first frame coupling holes (410b-h) may be provided so as to be coupled with an electric device to be described later, and the electric device may be, for example, a vehicle. For example, the vehicle may include a power unit that may include the battery pack (1) according to an example of the present disclosure. In addition, the vehicle may further include a power fixing member that fixes the power unit. The power fixing member may be a part of a car body of the vehicle, and by fixing the power unit, the power unit may not be separated from the vehicle even when the vehicle is driving or an external impact is applied due to an accident, etc. The above first frame joining holes (410b-h) may face holes formed in at least a portion of the power fixing part of the vehicle, and a fastening part (R) or the like may pass through these holes to fix the battery pack (1) provided in the power fixing part. The fastening part (R) may be a bolt or a rivet, but is not particularly limited thereto.

[0116] Also, referring to FIG. 6, in the battery pack (1) according to an example of the present disclosure, the second auxiliary frame (420b) of the pack frame (40) may include one or more second frame coupling holes (420b-h). The second frame coupling holes (420b-h) may penetrate the second auxiliary frame (420b). The second frame coupling holes (420b-h) may be provided so as to be coupled with an electric device to be described later, and the electric device may be, for example, an automobile. The second frame coupling holes (420b-h) may face holes formed in at least a portion of a power fixing part of the automobile, and a fastening part (R) or the like may pass through these to fix the battery pack (1) provided to the power part. The fastening part (R) may be a bolt or a rivet, but is not particularly limited thereto.

[0117] That is, a vehicle according to an example of the present disclosure may include a power unit including the battery pack (1) and a power fixing unit for fixing the power unit. In addition, the battery pack (1) includes a pack frame (40) including a first frame coupling hole (410b-h) and a second frame coupling hole (420b-h), and at least one selected from the group consisting of the first frame coupling hole (410b-h) and the second frame coupling hole (420b-h) may face a hole formed in at least a portion of the power fixing unit. That is, at least one of the holes formed in at least a portion of the power fixing unit may be formed at a position that can face the first frame coupling hole (410b-h) and / or the second frame coupling hole (420b-h). The battery pack (1) can be fixed to the vehicle by passing a fastening member (R) through one or more selected from the group consisting of the first frame coupling hole (410b-h) and the second frame coupling hole (420b-h) and the hole of the power fixing member.

[0118] Additionally, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include steel to secure structural rigidity and protect the storage device (20) from external impact. Specifically, components constituting the pack frame (40), such as the first frame (410) and the second frame (420), may include steel as described above.

[0119] Figures 7 and 8 are schematic drawings illustrating a portion of a structure of a battery pack (1) according to an example of the present disclosure. In the battery pack (1) according to an example of the present disclosure, the pack frame (40) can be in contact with the sealant (30) in at least some areas.

[0120] Referring to FIG. 7, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may be in contact with the sealing material (30) covering at least a portion of the through hole (120) on the plate (10) at least in a portion thereof. In addition, referring to FIG. 7, the pack frame (40) may be in contact with the sealing material (30) at least in a portion thereof while surrounding each of the storage devices (20) mounted on the mounting portion (110).

[0121] Meanwhile, referring to FIG. 7, the plate (10) may include a plate coupling hole (10h). The plate coupling hole (10h) may penetrate the plate (10). In addition, the plate (10) may be provided with the plate coupling hole (10h) in an area that does not overlap with the through hole (120), and the plate coupling hole (10h) may be provided at a position facing a hole (not shown) formed in at least a portion of the pack frame (40). When the pack frame (40) is mounted on the plate (10), the hole formed in at least a portion of the pack frame (40) may face the plate coupling hole (10h) provided in the plate (10). In this way, the plate coupling hole (10h) is provided at a position facing the hole formed in at least a portion of the aforementioned pack frame (40), so that the fastening portion (R) can pass through the plate coupling hole (10h) and additionally pass through the hole formed in at least a portion of the pack frame (40). The fastening portion (R) may be, for example, a bolt or a rivet, but is not particularly limited thereto. Excellent durability can be secured through the fastening portion (R).

[0122] Referring to Fig. 8, the pack frame (40) is mounted on the plate (10). Specifically, the pack frame (40) is mounted on the plate (10) so that at least a portion of the pack frame (40) is in contact with the sealing material (130) provided on the plate (10). In addition, referring to Fig. 8, the pack frame (40) can allow the storage device (20) to enter the space (430) formed by the first frame (410), the second frame (420), the first separation frame (410a), and the second separation frame (420a). That is, the pack frame (40) can surround the storage device (20). In addition, referring to Fig. 8, the pack frame (40) and the plate (10) can be more strongly coupled and fixed through the fastening portion (R).

[0123] FIGS. 9 to 12 are drawings showing a simplified view of a part of the structure of a battery pack (1) according to an example of the present disclosure, and are drawings showing a part of the appearance along the XZ plane in FIG. 8.

[0124] Referring to Fig. 9, this is a drawing showing the state of the pack frame (40) just before it is seated on the plate (10). Specifically, Fig. 9 is a drawing showing the state of the first separation frame (410a) of the pack frame (40) just before it is seated on the plate (10) provided with a sealing material (30) that covers at least a portion of the through hole (120). Fig. 9 only shows the first separation frame (410a), but those skilled in the art can easily understand that the second separation frame (420a) will also be the same.

[0125] Meanwhile, referring to FIG. 9, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a groove portion (440) in at least a portion of an area in contact with the sealant (30). Specifically, referring to FIG. 9, in the battery pack (1), the first separation frame (410a) of the pack frame (40) may include a groove portion (440) in at least a portion of an area in contact with the sealant (30). As described above, the second separation frame (420a) of the pack frame (40) may also include a groove portion (440) in at least a portion of an area in contact with the sealant (30).

[0126] Referring to FIG. 10, in a battery pack (1) according to an example of the present disclosure, the sealant (30) may fill at least a portion of the groove portion (440). Specifically, referring to FIG. 10, in the battery pack (1), the sealant (30) may fill at least a portion of the groove portion (440) of the first separating frame (410a). In addition, as described above, the sealant (30) may fill at least a portion of the groove portion (440) of the second separating frame (420a). In addition, referring to FIG. 10, the sealant (30) may completely fill the groove portion (440).

[0127] In a battery pack (1) according to an example of the present disclosure, if the pack frame (40) includes a groove (440) in at least a part of an area in contact with the sealant (30), and the sealant (30) fills at least a part of the groove (440), excellent airtightness and durability can be secured.

[0128] Referring to FIGS. 9 and 10, in a battery pack (1) according to an example of the present disclosure, the pack frame (40) may include a groove portion (440) that does not face the through hole (120). That is, the groove portion (440) of the pack frame (40) may be positioned so as not to face at least a portion of the through hole (120). As described above, when the groove portion (440) is positioned so as not to face the through hole (120), excellent airtightness and durability can be secured.

[0129] Referring to FIG. 11, a battery pack (1) according to an example of the present disclosure may include a fixing portion (460). In addition, in the battery pack (1), the pack frame (40) may have a coupling hole (450), and the coupling hole (450) may pass through the pack frame (40). In addition, specifically, the first separation frame (410a) of the pack frame (40) may have a coupling hole (450), and the coupling hole (450) may pass through the first separation frame (410a). In addition, as described above, the second separation frame (420a) may have a coupling hole (450), and the coupling hole (450) may pass through the second separation frame (420a).

[0130] Referring to FIG. 11, in a battery pack (1) according to an example of the present disclosure, the fixing member (460) passes through the through hole (120) of the plate (10) and can additionally pass through the coupling hole (450). The fixing member (460) is fixed after passing through the through hole (120) and the coupling hole (450), thereby more strongly coupling and fixing the plate (10) and the pack frame (40), thereby ensuring excellent durability. That is, the fixing member (460) can couple and fix the plate (10) and the pack frame (40). The fixing member (460) is not particularly limited as long as it can pass through the through hole (120) and the coupling hole (450) to couple and fix the plate (10) and the pack frame (40) to each other, but may be, for example, a bolt or a rivet. The fixing member (460) can refer to FIG. 16.

[0131] Referring to FIG. 11, in a battery pack (1) according to an example of the present disclosure, the coupling hole (450) and the through hole (120) may face each other in at least a portion of the area. Specifically, in the battery pack (1), the coupling hole (450) and the through hole (120) may face each other in at least a portion of the area that is large enough to allow the fixing member (460) to pass through. The fixing member (460) may penetrate both the through hole (120) provided in the plate (10) and the coupling hole (450) provided in the pack frame (40) to couple and fix the plate (10) and the pack frame (40).

[0132] Referring to FIGS. 6 and 12, as described above, the pack frame (40) may include an additional hole. Specifically, the first internal separation frame (410a-1) of the pack frame (40) may include an additional hole (410a-h), and the second internal separation frame of the pack frame (40) may also include an additional hole.

[0133] Referring to FIG. 12, when the pack frame (40) is seated on the plate (10) while being in contact with the sealant (30) at least in a portion thereof, the sealant (30) may fill at least a portion of the additional hole (410a-h) of the pack frame (40). Here, in order to prevent the sealant (30) from overflowing through the additional hole (410a-h), the additional hole (410a-h) may be covered at least in part with a sealing tape (470). Here, the content regarding the additional hole (410a-h) may be applied not only to the first internal separation frame (410a-1) but also to the second internal separation frame.

[0134] Referring to Fig. 12, the pack frame (40) may be provided with additional holes (410a-h) and a sealing tape (470), and at least a portion of the additional holes (410a-h) may be covered with the sealing tape (470). In addition, referring to Fig. 12, the additional holes (410a-h) may be entirely covered with the sealing tape (470). The material of the sealing tape (470) is not particularly limited as long as it prevents the sealing material (30) from overflowing through the additional holes (410a-h).

[0135] FIG. 13 is a simplified diagram showing a part of the structure of a plate (10) of a battery pack (1) according to an example of the present disclosure, and is a drawing showing a part of the structure along the XZ plane in FIG. 1. FIG. 14 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing a part of the structure along the XY plane in FIG. 1.

[0136] Referring to FIG. 13, in a battery pack (1) according to an example of the present disclosure, the plate (10) may include a first plate (10a) having a plate shape and a second plate (10b) having a folded shape.

[0137] Meanwhile, in the battery pack (1) according to an example of the present disclosure, the first plate (10a) and the second plate (10b) may be connected by bonding. The first plate (10a) and the second plate (10b) may be connected to each other through welding, bonding (brazing, etc.), adhesion, or a fastening means (e.g., rivets or bolts / nuts, etc.). Preferably, the first plate (10a) and the second plate (10b) may be connected to each other through welding or bonding (brazing, etc.).

[0138] In a battery pack (1) according to an example of the present disclosure, the first plate (10a) may be referred to as an upper plate according to a relative positional relationship, and in this case, the second plate (10b) may be referred to as a lower plate. In addition, in the battery pack (1), the first plate (10a) may be referred to as a lower plate according to a relative positional relationship, and in this case, the second plate (10b) may be referred to as an upper plate. In the battery pack (1), the mounting portion (110) may be provided on the upper plate. That is, depending on the positional relationship, the mounting portion (110) may be provided on one surface of the first plate (10a) (specifically, the other surface that is not in contact with the second plate (10b)), and the storage device (200) may be mounted on the mounting portion (110). In addition, depending on the positional relationship, a mounting portion (110) may be provided on one side of the second plate (10b) (specifically, the other side that is not in contact with the first plate (10a)), and a storage device (200) may be mounted on the mounting portion (110).

[0139] Referring to FIGS. 13 and 14, in a battery pack (1) according to an example of the present disclosure, a plate (10) may include a flow path (10c) at least in a portion between a first plate (10a) and a second plate (10b). The flow path (10c) may be formed by a plate-shaped first plate (10a) and a second plate (10b) having a bent shape (10b-1). In addition, the flow path (10c) may be formed over the entire plate (10) by appropriately designing the first plate (10a) and the second plate (10b). In particular, the flow path (10c) may allow a heat transfer medium (not shown) capable of absorbing heat generated in a storage device (20) mounted on a mounting portion (110) to pass therethrough. In addition, the flow path (10c) may refer to FIG. 16.

[0140] The above heat transfer medium can perform the function of receiving and absorbing heat generated from the storage device (20) and dissipating it. The heat transfer medium is not particularly limited as long as it is a fluid that can flow in the passage (10c), but may include one or more selected from the group consisting of a gaseous medium such as air and a liquid medium such as water.

[0141] In addition, referring to FIG. 14, in order for a heat transfer medium to pass through the passage (10c), the plate (10) may include an inlet (10c-1) and an outlet (10c-2) that can connect the passage (10c) to the outside. A heat transfer medium to pass through the passage (10c) can be injected into the passage (10c) through the inlet (10c-1), and the heat transfer medium that has received the heat can be discharged to the outside from the passage (10c) through the outlet (10c-2).

[0142] In addition, Fig. 14 is only an exemplary design of the euro (10c), and the design method is not limited as long as the structure can effectively dissipate the heat generated in the storage device (20).

[0143] Referring to FIG. 13, in a battery pack (1) according to an example of the present disclosure, the plate (10) may include a flow path (10c) in an area where a through hole (120) is not provided. If the positions of the through hole (120) of the plate (10) and the flow path (10c) are not overlapped with each other, heat generated in the storage device (20) can be effectively dissipated.

[0144] FIG. 15 is a schematic diagram illustrating a portion of a structure of a battery pack (1) according to an example of the present disclosure. Referring to FIG. 15, the battery pack (1) according to an example of the present disclosure may include a thermally conductive layer (50) on a mounting portion (110). The thermally conductive layer (50) may be provided on at least a portion of each mounting portion (110). In addition, a storage device (20) may be mounted on the thermally conductive layer (50).

[0145] Referring to Fig. 15, the thermal conductive layer (50) may be formed in a layer form and may transfer heat generated from the storage device (20) to the plate (10) through conduction. In addition, the thermal conductive layer (50) may be a heat dissipation layer and the storage device (20) may be fixed by being adhered to the mounting portion (110) of the plate (10).

[0146] Additionally, the thermally conductive layer (50) may include an adhesive component. The adhesive component may include one or more selected from the group consisting of silicone resin, acrylic resin, urethane resin, and epoxy resin. Additionally, the adhesive component may have adhesive performance on its own, or may not have adhesive performance on its own but may be made to secure adhesive performance through a curing or polymerization reaction.

[0147] In addition, the thermal conductivity of the thermal conductive layer (50) may be 0.1 W / m·K or more, 0.2 W / m·K or more, 0.3 W / m·K or more, 0.4 W / m·K or more, 0.5 W / m·K or more, 0.6 W / m·K or more, 0.7 W / m·K or more, 0.8 W / m·K or more, 0.9 W / m·K or more, or 1 W / m·K or less, 9.5 W / m·K or less, 9 W / m·K or less, 8.5 W / m·K or less, 8 W / m·K or less, 7.5 W / m·K or less, or 7 W / m·K or less. The thermal conductivity of the thermal conductive layer (50) may be within a range that appears when the above-mentioned upper and lower limits are appropriately selected. If the above-mentioned thermal conductive layer (50) has the thermal conductivity described above, an excellent heat dissipation effect can be secured. The thermal conductivity of the above-mentioned thermal conductive layer (50) may refer to a value measured in accordance with ASTM D5470 or ISO 22007-2 along the thickness direction of a sample (cured product) manufactured to be 20 mm.

[0148] In addition, the thermally conductive layer (50) may include a heat-radiating component. The heat-radiating material may impart heat-radiating properties to the thermally conductive layer (50). Various known heat-radiating materials may be used as the heat-radiating material without particular limitations. The heat-radiating material may be a ceramic filler, exemplified by aluminum oxide, aluminum hydroxide, magnesium oxide, magnesium hydroxide, and boron nitride.

[0149] In addition, the thermal conductive layer (50) may further include a flame retardant material as needed. The flame retardant material may impart flame retardancy to the thermal conductive layer (50). Various known flame retardants may be used as the flame retardant material without any particular limitation. The flame retardant may be a halogen flame retardant containing a halogen element (a term encompassing F, Cl, Br, and I) or a non-halogen flame retardant not containing a halogen element, or a phosphorus flame retardant containing phosphorus (P) or an inorganic flame retardant exemplified by a metal oxide (e.g., aluminum hydroxide).

[0150] FIG. 16 is a simplified diagram showing a part of the structure of a battery pack (1) according to an example of the present disclosure, and is a drawing showing another example of a part of the appearance along the XZ plane in FIG. 15.

[0151] In a battery pack (1) according to an example of the present disclosure, a battery cell (210) included in a storage device (20) may be in direct contact with the thermally conductive layer (50). In another example, in the battery pack (1), a battery cell (210) included in a storage device (20) may be in direct contact with a mounting portion (110) of a plate (10).

[0152] Referring to FIG. 16, the storage device (20) includes one or more battery cells (210), and the battery cells (210) are electrically connected to each other, and the battery cells (210) can be protected from external impact by a battery cover (220). At the same time, in the storage device (20), the battery cells (210) may be in direct contact with the thermally conductive layer (50) as described above, or in another example, the battery cells (210) may be in direct contact with the mounting portion (110) of the plate (10). If the storage device (20) has such a structure, heat generated from the battery cells (210) can be effectively dissipated.

[0153] Referring to FIG. 16, the pack frame (40) may include a coupling frame and a coupling / separation frame in order to fix the storage device (20) mounted on the mounting portion (110) to the pack frame (40). Meanwhile, FIG. 16 illustrates the first frame (410) and the first separation frame (410a), but it will be apparent to those skilled in the art that the same applies to the second frame (420) and the second separation frame (420a).

[0154] Referring to FIG. 16, the pack frame (40) may include a coupling frame (410-f) and a coupling-separation frame (410a-f). Specifically, the first frame (410) of the pack frame (40) may include a coupling frame (410-f), and the first coupling-separation frame (410a) of the pack frame (40) may include a coupling-separation frame (410a-f). The coupling frame (410-f) and the coupling-separation frame (410a-f) may be provided to protrude inwardly so as to be coupled with the battery cover (220) of the aforementioned storage device (20). Specifically, referring to FIG. 16, the coupling frame (410-f) may protrude from the first frame (410) in the +x direction, which is the inner side where the mounting portion (110) is located, and the coupling separation frame (410a-f) may protrude from the first separation frame (410a) in the -x direction, which is the inner side where the mounting portion (110) is located.

[0155] As described above, the pack frame (40) may also include a second frame (420) and a second separation frame (420a). The second frame (420) may include a joining frame, and the second separation frame (420a) may include a joining-separating frame. The joining frame and the joining-separating frame may each be provided to protrude inwardly where the mounting portion (110) is located, in order to be joined with the battery cover (220) of the storage device (20) described above.

[0156] Referring to FIG. 16, a battery pack (1) according to an example of the present disclosure may include a cover fixing member (230) to couple and fix the battery cover (220) and the pack frame (40). In the battery pack (1), the coupling frame (410-f) and the coupling / separation frame (410a-f) may have a through hole through which the cover fixing member (230) may pass. The battery cover (220) may have a screw thread or a through hole at a position corresponding to the through hole provided in the coupling frame (410-f) and the coupling / separation frame (410a-f), and when the cover fixing member (230) is coupled therebetween, the battery cover (220) and the pack frame (40) may be coupled and fixed. The cover fixing member (230) is not particularly limited as long as it can couple and fix the battery cover (220) and the pack frame (40), but may be, for example, a bolt or a rivet.

[0157] An electric device according to an example of the present disclosure may include one or more battery packs (1) according to an example of the present disclosure. The aforementioned electric device refers to a device that operates through power generated from a battery cell (210), etc. The electric device may be, for example, a mobile phone, a home appliance, a car (electric car or hybrid car), or an energy storage system (ESS).

[0158] The above description is merely an example of applying the principles of the present disclosure, and other configurations may be further included without departing from the scope of the present disclosure.

Claims

1. A storage device including one or more battery cells and It includes a plate having a mounting portion on which the above-mentioned storage device is mounted, The above plate has through holes in at least some areas, A battery pack wherein the above through hole is at least partially covered with a sealant.

2. In paragraph 1, The above through hole is provided in a battery pack in an area that does not overlap with the mounting portion.

3. In paragraph 1, The above plate includes a plurality of mounting portions, The above through hole is a battery pack provided between adjacent mounting portions.

4. In paragraph 1, The above plate includes a plurality of through holes, A battery pack wherein each of the above through holes is at least partially covered with a sealant.

5. In paragraph 1, The above sealant is a battery pack containing an adhesive.

6. In paragraph 1, A battery pack in which the above penetration holes are entirely covered with sealant.

7. In paragraph 1, Further comprising a pack frame surrounding the above storage device, A battery pack wherein the pack frame is in contact with the sealant at least in some area.

8. In paragraph 7, A battery pack wherein the pack frame further includes a groove portion in at least a portion of an area in contact with the sealant.

9. In paragraph 8, The above sealant fills at least a portion of the home portion of the battery pack.

10. In paragraph 8, A battery pack having a pack frame including a groove portion that does not face the through hole.

11. In paragraph 7, Further including the above fixed part, The above-mentioned fixing part is a battery pack that fixes the plate and pack frame together.

12. In paragraph 11, The above pack frame has a joining hole, The above-mentioned joining hole and through hole face each other at least in some area, A battery pack in which the fixing member penetrates both the through hole provided in the plate and the joining hole provided in the pack frame to jointly fix the plate and the pack frame.

13. In paragraph 12, The above pack frame further includes additional holes and sealing tapes, A battery pack wherein the above additional hole is at least partially covered with the above sealing tape.

14. In paragraph 1, The above plate includes a first plate having a plate shape and a second plate having a bent shape, A battery pack in which the first plate and the second plate are joined and connected.

15. In paragraph 14, A battery pack wherein the above plate further includes a euro in at least a portion between the first plate and the second plate.

16. In paragraph 15, The above plate is a battery pack that includes a euro in an area where a through hole is not provided.

17. In paragraph 1, A heat-conducting layer is included on the above-mentioned mounting portion, The above storage device is a battery pack mounted on the heat-conducting layer.

18. In paragraph 17, A battery pack having the above thermal conductive layer having a thermal conductivity of 0.1 W / m·K or more.

19. In paragraph 17, A battery pack in which the battery cells included in the above storage device are in direct contact with the thermal conductive layer.

20. Power unit including the battery pack of paragraph 1 and Including a power fixing part that fixes the above power part, The above battery pack includes a pack frame including a first frame joining hole and a second frame joining hole, At least one selected from the group consisting of the first frame coupling hole and the second frame coupling hole faces a hole formed in at least a part of the power fixing part, An automobile in which a fastening member passes through a hole of the power fixing member and at least one selected from the group consisting of the first frame coupling hole and the second frame coupling hole to fix the battery pack.

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