Battery packs and automobiles

Abstract

The present invention discloses a battery pack and a vehicle including the same that improve space efficiency of an installation location. To achieve this object, the battery pack according to the present invention includes at least one battery module, and a cooling unit having a refrigerant flow path formed therein for allowing a refrigerant to flow, having a plate shape for mounting the at least one battery module on an upper portion, and having at least one of a ridge portion where a portion where the battery module is not mounted bulges upward and a valley portion where another portion where the battery module is not mounted is recessed downward.

Description

[Technical field]

[0001] The present invention relates to a battery pack and a vehicle including the same, and more particularly to a battery pack and a vehicle including the same that improves space efficiency of an installation location.

[0002] This application claims priority to Korean Patent Application No. 10-2020-0138666, filed on October 23, 2020, and the entire contents disclosed in the specification and drawings of the corresponding application are incorporated herein by reference. [Background technology]

[0003] Recently, as the demand for portable electronic products such as notebook PCs, video cameras, and mobile phones has increased sharply and the development of electric vehicles, energy storage batteries, robots, satellites, etc. has progressed in earnest, research into high-performance secondary batteries that can be repeatedly charged and discharged is progressing vigorously.

[0004] Currently, commercial secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Of these, lithium secondary batteries are in the spotlight due to their advantages over nickel-based secondary batteries, such as almost no memory effect, freedom to charge and discharge, a very low self-discharge rate, and high energy density.

[0005] Such a lithium secondary battery mainly uses a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate, each coated with a positive electrode active material and a negative electrode active material, are arranged with a separator sandwiched therebetween, and an exterior material, i.e., a battery case, that seals and houses the electrode assembly together with an electrolyte. A battery pack may include a plurality of lithium secondary batteries.

[0006] Recently, there has been an increasing demand for large-capacity battery packs to be applied to electric vehicles, etc. Such battery packs are installed in the narrow interior space of an automobile, and since an automobile is equipped with many internal components such as an electric motor and a power transmission device in addition to the battery pack, it is necessary to secure a sufficient storage space to accommodate the battery pack.

[0007] In addition, if the installation location where the battery pack is mounted has a round-shaped part or a convex bottom, dead space (empty space) occurs between the battery pack and the storage space in the conventional technology, resulting in a problem of reduced space efficiency of the automobile. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above problems, and has an object to provide a battery pack and an automobile including the same that improve the space efficiency of the installation location.

[0009] Other objects and advantages of the present invention will become apparent from the following description and the accompanying drawings, in which: FIG. 1 is a block diagram of a method for manufacturing a semiconductor device according to the present invention; [Means for solving the problem]

[0010] The battery pack according to the present invention for solving the above problems comprises: At least one battery module; a cooling unit having a refrigerant flow path formed therein and configured to allow a refrigerant to flow therethrough, a plate shape for mounting the at least one battery module on an upper portion, and having at least one of a ridge portion where a portion where the battery module is not mounted bulges upward and a valley portion where another portion where the battery module is not mounted is recessed downward.

[0011] The battery pack further includes an electrical module configured to control charging and discharging of the battery module, The electrical module may be positioned to face at least one of the peaks and valleys of the cooling unit, and may have at least one curved surface.

[0012] The battery module may further include a heat transfer member having one side configured to connect to the electrical module and another side contacting the battery module, the heat transfer member having at least one curved surface facing at least one of the peaks and the valleys of the cooling unit.

[0013] The heat transfer member may have an internal space configured to accommodate a cable that electrically connects the electrical module and the battery module.

[0014] Further, the battery module includes a coupling part extending outward from one side surface and having a first bolt fastening hole formed therein, The heat transfer member may include a support portion having a second bolt fastening hole formed therein to be coupled to a coupling portion of the battery module.

[0015] The battery pack includes: a front plate coupled to a front end of the cooling unit; a rear plate coupled to a rear end of the cooling unit; a left plate coupled to a left end of the cooling unit; a right plate coupled to a right end of the cooling unit.

[0016] Furthermore, the electrical module may further include a pillar member extending long from the left side to the right side of the electrical module so that both ends support the left side plate and the right side plate, respectively, and having at least one curved surface so as to face at least one of the peaks and valleys of the cooling unit.

[0017] In addition, the pillar member is a receiving portion located on the ridge portion of the cooling unit and recessed upward so that the ridge portion can be inserted therein; The cooling unit may further include a protrusion located above the valley portion of the cooling unit and protruding downwardly so as to be inserted into a recessed space of the valley portion.

[0018] In order to achieve the above object, the automobile of the present invention includes at least one battery pack as described above.

[0019] and further comprising a vehicle body configured to mount the battery pack; A portion of the vehicle body may be configured to be inserted into a space formed by the ridges of the cooling unit. Effect of the Invention

[0020] According to one aspect of the present invention, the present invention includes a cooling unit having at least one ridge and valley, so that even if a round-shaped part is present at an installation location where a battery pack is mounted or the installation bottom has a bulging shape, the round-shaped part or the bulging shape can be at least partially accommodated in the recessed space of the ridge of the cooling unit, thereby effectively improving the space efficiency of the installation location. In particular, when the storage space for the battery pack is narrow, such as in an automobile, the occurrence of dead space (empty space) caused by the battery pack can be minimized.

[0021] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical ideas of the present invention. Therefore, the present invention should not be interpreted as being limited to only the matters described in the drawings. [Brief description of the drawings]

[0022] [Figure 1] 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention; [Diagram 2]1 is an exploded perspective view illustrating a battery pack according to an embodiment of the present invention; [Diagram 3] 1 is a perspective view illustrating a cooling unit of a battery pack according to an embodiment of the present invention; [Figure 4] FIG. 2 is a bottom perspective view illustrating a cooling unit of a battery pack according to an embodiment of the present invention. [Diagram 5] 1 is a vertical cross-sectional view illustrating a schematic configuration of a portion of a battery pack according to an embodiment of the present invention. [Figure 6] FIG. 6 is a partially enlarged view showing a schematic view of a portion of the battery pack shown in FIG. 5. [Figure 7] FIG. 2 is a perspective view illustrating a schematic configuration of a portion of a battery pack according to another embodiment of the present invention. [Figure 8] 11 is a perspective view showing a pillar member of a battery pack according to another embodiment of the present invention; FIG. [Figure 9] 1 is a perspective view showing a schematic view of an automobile according to an embodiment of the present invention; [Figure 10] 1 is a partial front view showing a schematic internal configuration of an automobile according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms and words used in the specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as having meanings and concepts corresponding to the technical ideas of the present invention, in accordance with the principle that the inventor himself can appropriately define the concepts of terms in order to best describe the invention.

[0024] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can be substituted for them at the time of this application.

[0025] Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present invention. Fig. 2 is a schematic exploded perspective view of a battery pack according to an embodiment of the present invention. Fig. 3 is a schematic perspective view of a cooling unit of a battery pack according to an embodiment of the present invention. And Fig. 4 is a schematic bottom perspective view of a cooling unit of a battery pack according to an embodiment of the present invention.

[0026] 1 to 4, a battery pack 100 according to an embodiment of the present invention includes at least one battery module 110 and a cooling unit 120.

[0027] Specifically, the battery module 110 may include a plurality of battery cells (not shown) and a module housing 111 that houses the plurality of battery cells therein. The battery cells may be lithium secondary batteries. The battery cells may be pouch-type battery cells including an electrode assembly (not shown), an electrolyte (not shown), and a pouch that houses the electrode assembly and the electrolyte (not shown). However, the battery pack 100 according to the present invention is not limited to the above-mentioned pouch-type battery cells, and the battery cells may be cylindrical battery cells, for example. That is, the battery cells may be any of various battery cells known at the time of filing of the present invention.

[0028] The battery module 110 may include at least one bus bar (not shown) or power cable (not shown) configured to electrically connect the plurality of battery cells to each other. Specifically, the bus bar may include a conductive metal, such as copper, aluminum, nickel, etc.

[0029] Furthermore, the module housing 111 may include an electrically insulating material. For example, the module housing 111 may be made of a polyvinyl chloride material. The module housing 111 may have a space capable of accommodating the plurality of battery cells therein. The module housing 111 may be generally in the shape of a rectangular parallelepiped box.

[0030] Furthermore, the battery pack 100 of the present invention may include a sensing cable 162 (FIG. 6) electrically connected between the plurality of battery modules 110 and the electrical module 160. The sensing cable may be configured to transmit an electrical signal to measure a current or a temperature of the battery module 110. A typical known configuration may be applied to the detailed configuration of the battery module 110. Therefore, a detailed description will be omitted. Furthermore, the battery pack 100 may further include a power cable (not shown) electrically connecting the plurality of battery modules.

[0031] In addition, the cooling unit 120 may be manufactured as a single unit by extrusion molding. In the present invention, the cooling unit 120 is manufactured as a single unit by extrusion molding, and thus the sealing performance can be improved and the refrigerant can be prevented from leaking to the outside, compared with the conventional cooling unit manufactured by joining two members. In addition, the shape of the cooling unit 120 is not limited to a flat plate shape, and can be freely modified. The cooling unit 120 may include an injection port 122 through which the refrigerant is injected and an exhaust port 123 through which the refrigerant is exhausted. The injection port 122 and the exhaust port 123 may be configured to communicate with a refrigerant flow path 121 formed inside the cooling unit 120.

[0032] The cooling unit 120 may have a refrigerant flow path 121 formed therein such that a refrigerant flows therethrough. The refrigerant flow path 121 may have a shape extending in a front-rear direction. The cooling unit 120 may include a partition wall W that divides the refrigerant flow path 121. The cooling unit 120 may be configured to mount the at least one battery module 110 on an upper portion thereof.

[0033] Further, the cooling unit 120 may be in the form of a plate having upper and lower surfaces wider than the sides. The cooling unit 120 may be a flat surface having a portion on which the battery module 110 is mounted extending horizontally.

[0034] The cooling unit 120 may include at least one of a peak 124 and a valley 125. The peak 124 may be a portion of the cooling unit 120 where the battery module 110 is not mounted. The peak 124 may have an upwardly bulging shape. The valley 125 may be another portion of the cooling unit 120 where the battery module 110 is not mounted. The valley 125 may have a downwardly recessed shape. For example, as shown in FIG. 3, the cooling unit 120 may have two peaks 124 at the center in the left-right direction (X-axis direction) and a valley 125 located between the two peaks 124.

[0035] 4, the peaks 124 of the cooling unit 120 may be formed in an upwardly protruding shape, so that a space 124b may be formed below the peaks 124. Conversely, the valleys 125 may be formed in a downwardly concave shape, so that a lower portion of the valleys 125 may protrude downward.

[0036] Therefore, according to this configuration of the present invention, the present invention includes the cooling unit 120 having at least one or more peaks 124 and valleys 125, so that even if a round-shaped part is present or the installation bottom has a bulging shape at the installation location where the battery pack 100 is mounted, the round-shaped part or the bulging shape at the installation bottom can be at least partially accommodated in the space 124b of the peaks 124 of the cooling unit 120, thereby effectively improving the space efficiency of the installation location. In particular, when the accommodation space for the battery pack 100 is narrow, such as in an automobile, the occurrence of dead space (empty space) that may be generated by the battery pack 100 can be minimized.

[0037] FIG. 5 is a vertical cross-sectional view illustrating a schematic configuration of a portion of a battery pack according to an embodiment of the present invention.

[0038] 2 and 3, the battery pack 100 according to an embodiment of the present invention may further include an electrical module 160. The electrical module 160 may include a control element (not shown) to control charging and discharging of the battery module 110. The electrical module 160 may include a BMS board, a relay, a fuse, a sensing cable, and the like as the control element. The control element of the electrical module 160 may have a known configuration. Therefore, a detailed description of the control element will be omitted.

[0039] The electrical module 160 may include an electrically insulating electrical housing 161 configured to accommodate the control element therein. The electrical housing 161 may be positioned to face at least one of the peaks 124 and the valleys 125 of the cooling unit 120. The electrical housing 161 may have a shape corresponding to at least one of the peaks 124 and the valleys 125. That is, the electrical housing 161 may have at least one first curved surface 160a. For example, referring to FIG. 5, the electrical module 160 may have a first curved surface 160a configured to face two peaks 124, respectively, and recessed toward the inside of the main body, and a first curved surface 160a configured to face the valleys 125 and bulged toward the outside of the main body.

[0040] Therefore, according to this configuration of the present invention, the present invention further includes an electrical module 160 positioned to face at least one of the peaks 124 and the valleys 125 of the cooling unit 120 and having at least one first curved surface 160a, thereby making it possible to efficiently use the internal space of the battery pack 100. Furthermore, the present invention can effectively improve the cooling efficiency of the electrical module 160 since heat generated in the electrical module 160 can be transferred to the cooling unit 120 through the wide conduction area of ​​the first curved surface 160a.

[0041] Meanwhile, referring to FIG. 5 together with FIG. 2 and FIG. 3, the battery pack 100 according to an embodiment of the present invention may further include a heat transfer member 170. The heat transfer member 170 may include a material having excellent thermal conductivity so as to receive heat generated from the battery module 110 and transfer the heat to the cooling unit 120. For example, the heat transfer member 170 may include an aluminum alloy or stainless steel. The insulating member 170 may have an electrically insulating coating layer formed on an outer surface. For example, the electrically insulating coating layer may be a polymer resin.

[0042] The heat transfer member 170 may be configured such that one side is connected to the electrical module 160. For example, one surface of the heat transfer member 170 may be joined to the electrical module 160. Alternatively, the heat transfer member 170 may be connected to the electrical module 160. The heat transfer member 170 may be formed integrally with the electrical module 160. For example, as shown in FIG. 5, a left side surface or a right side surface of the heat transfer member 170 may be configured to be connected to a side surface of the electrical module 160.

[0043] In addition, the other side of the heat transfer member 170 may be configured to contact the battery module 110. For example, as shown in FIG 5, the left side or the right side of the heat transfer member 170 may be configured to contact the side of the battery module 110.

[0044] Further, the heat transfer member 170 may be configured to face at least one of the peaks 124 and the valleys 125 of the cooling unit 120. The cooling unit 120 may have at least one second curved surface 170a. For example, as shown in FIG. 5, the heat transfer member 170 may have a second curved surface 170a configured to face an upper surface of the peaks 124.

[0045] Therefore, according to the above configuration of the present invention, the present invention further includes a heat transfer member 170 having at least one second curved surface 170a, so that the heat generated from the battery module 110 can be effectively transferred to the cooling unit 120. As a result, the battery pack 100 of the present invention can significantly improve the cooling efficiency.

[0046] FIG. 6 is a partially enlarged view that shows a schematic view of a portion of the battery pack of FIG.

[0047] 2, 3, and 5, the heat transfer member 170 may have an internal space S configured to accommodate a cable 162. For example, the cable 162 may be a sensing cable 162 configured to sense a current. The cable 162 may be configured to electrically connect a connection terminal of the electrical module 160 to an external terminal of the battery module 110. That is, the insulating member may have a movement passage extending in the left-right direction so that the cable 162 penetrates in the left-right direction (X-axis direction), and an inlet and an outlet that are partially perforated.

[0048] Therefore, according to the above-described configuration of the present invention, the present invention provides an internal space S for accommodating the cable 162, thereby facilitating electrical connection between the battery module 110 and the electrical module 160. This can increase the utilization of the internal space of the battery pack 100 of the present invention and improve manufacturing efficiency.

[0049] Meanwhile, referring to FIG. 6, the battery module 110 may include a coupling part 112 extending outward from one side surface and having a first bolt fastening hole H1 formed therein. The heat transfer member 170 may include a support part 172 having a thread formed thereon to be coupled to the coupling part 112 of the battery module 110 and having a second bolt fastening hole H2 formed therein. The first bolt fastening hole H1 formed in the coupling part 112 and the second bolt fastening hole H2 formed in the support part 172 may be configured to communicate with each other. That is, the first bolt fastening hole H1 and the second bolt fastening hole H2 may be configured such that one fastening bolt B passes through to fasten the coupling part 112 and the support part 172 to each other.

[0050] Therefore, according to this configuration of the present invention, the connecting portion 112 provided on the battery module 110 and the support portion 172 provided on the heat transfer member 170 are configured to be connected to each other by bolting, so that not only can the battery module 110 be stably fixed on the cooling unit 120, but the heat transfer member 170 can be stably maintained in close contact with the battery module 110, thereby effectively increasing the cooling performance of the battery module 110.

[0051] Meanwhile, referring to FIGS. 1 and 2, a battery pack 100 according to an embodiment of the present invention may include an upper cover 130, a front plate 141, a rear plate 142, a left plate 151, and a right plate 152.

[0052] The upper cover 130 may be located on the upper part of the battery modules 110. Also, the upper cover 130 may be in the form of a plate extending horizontally to cover the upper parts of the battery modules 110. The upper cover 130 may be configured to be coupled to the upper ends of each of the front plate 141, the rear plate 142, the left plate 151, and the right plate 152.

[0053] The front plate 141 may be configured to be coupled to a front end of the cooling unit 120. A portion of the front plate 141 may have a shape corresponding to the peaks 124 and the valleys 125 of the front end of the cooling unit 120. That is, a lower surface of the front plate 141 may have a curved surface 141a recessed upward to correspond to the peaks 124. A lower surface of the front plate 141 may have a curved surface 141a protruding downward to correspond to the valleys 125.

[0054] In addition, the rear plate 142 may have a shape corresponding to the peaks 124 and the valleys 125 of the rear end of the cooling unit 120. That is, the lower surface of the rear plate 142 may have a curved surface 142a recessed upward to correspond to the peaks 124. The lower surface of the rear plate 142 may have a curved surface 142a protruding downward to correspond to the valleys 125.

[0055] Further, the left plate 151 may be configured to be coupled to a left end of the cooling unit 120. The left plate 151 may have a third bolt fastening hole H3 configured to be bolted to the coupling portion 112 of the battery module 110. A screw thread may be formed in the third bolt fastening hole H3. The third bolt fastening hole H3 may be configured to communicate with a first bolt fastening hole H1 formed in the coupling portion 112 of the battery module 110.

[0056] The right plate 152 may be configured to be coupled to a right end of the cooling unit 120. The right plate 152 may have a third bolt fastening hole H3 configured to be bolted to the coupling portion 112 of the battery module 110. A thread may be formed in the third bolt fastening hole H3. The third bolt fastening hole H3 may be configured to communicate with a first bolt fastening hole H1 formed in the coupling portion 112 of the battery module 110.

[0057] Therefore, according to this configuration of the present invention, the coupling portion 112 of the battery module 110 can be fixed to the left plate 151 or the right plate 152 in which the third bolt fastening hole H3 is formed, so that the battery module 110 can be stably mounted on the cooling unit 120. As a result, the durability of the battery pack 100 of the present invention can be improved.

[0058] Fig. 7 is a perspective view showing a schematic configuration of a portion of a battery pack according to another embodiment of the present invention. And Fig. 8 is a perspective view showing a schematic configuration of a pillar member of a battery pack according to another embodiment of the present invention. For reference, in Fig. 7, the battery module 110, the electrical module 160, and the heat transfer member 170 are omitted for convenience of explanation of the drawings, but the battery pack according to another embodiment of the present invention may include the battery module 110, the electrical module 160, and the heat transfer member 170 like the battery pack of Fig. 2.

[0059] 7 and 8, the battery pack 100 according to another embodiment of the present invention may further include a pillar member 180, compared to the battery pack 100 according to the embodiment of Fig. 2. The pillar member 180 may be located between two battery modules 110 arranged in the front-rear direction (Y-axis direction). For example, as shown in Fig. 7, two pillar members 180 may be located between the battery modules 110 arranged in the front-rear direction.

[0060] In addition, the pillar member 180 may be configured such that both ends in the longitudinal direction (X-axis direction) support the left plate 151 and the right plate 152, respectively. The pillar member 180 may have a shape that extends elongatedly from the left side to the right side of the electrical module 160.

[0061] Furthermore, a lower portion of the pillar member 180 may be configured to face at least one of the peaks 124 and the valleys 125 of the cooling unit 120. That is, the pillar member 180 may have at least one third curved surface 180a having a shape corresponding to at least one of the peaks 124 and the valleys 125 of the cooling unit 120. The pillar member 180 may be made of steel or stainless steel having excellent mechanical rigidity. The pillar member 180 may include a receiving portion 181 and a protruding portion 182. The receiving portion 181 may be configured to be positioned on the peak portion 124 of the cooling unit 120. The receiving portion 181 may have a shape recessed upward so that the peak portion 124 can be inserted therein. The protruding portion 182 may be positioned on the valley portion 125 of the cooling unit 120. The protruding portion 182 may have a shape protruding downward so that the protruding portion 182 can be inserted into a space recessed downwardly of the valley portion 125.

[0062] Therefore, according to this configuration of the present invention, the present invention further includes a pillar member 180 configured to face at least one of the peak portion 124 and the valley portion 125 of the cooling unit 120, so that when the battery pack 100 receives an external impact, the battery module 110 mounted therein can be protected by the high mechanical rigidity of the pillar member 180. As a result, the safety of the battery pack 100 of the present invention can be improved.

[0063] FIG. 9 is a perspective view that shows a schematic view of a vehicle according to an embodiment of the present invention.

[0064] 9, an automobile 200 according to an embodiment of the present invention may include at least one battery pack 100 and a vehicle body having an accommodation space for accommodating the battery pack 100. For example, the automobile 200 may be an electric automobile 200, an electric scooter, an electric wheelchair, an electric motorcycle, or the like.

[0065] FIG. 10 is a partial front view showing a schematic internal configuration of an automobile according to an embodiment of the present invention.

[0066] 9 and 10, the automobile 200 according to an embodiment of the present invention may further include a body 210 configured to mount the battery pack 100. A portion of the body 210 may be configured to be inserted into the ridge portion 124 of the cooling unit 120. A portion of the body 210 may have an upwardly bulging shape. For example, as shown in FIG. 10, the body 210 may have a portion 210a bulging upward corresponding to the ridge portion 124 of the cooling unit 120. The bulging portion 210a of the body 210 may be inserted into a space formed under the ridge portion 124 of the cooling unit 120. The body 210 may have a portion 210b recessed downward corresponding to the valley portion 125 of the cooling unit 120. The valley portion 125 of the cooling unit 120 may be mounted in the recessed portion 210b of the body 210.

[0067] Therefore, according to this configuration of the present invention, a part of the automobile 200 and the body 210 of the present invention is configured to be inserted into the space formed by the ridge 124 of the cooling unit 120, thereby effectively improving the space efficiency of the installation location of the battery pack 100. In particular, when the storage space for the battery pack 100 is narrow, such as in the automobile 200, generation of dead space due to the battery pack 100 can be minimized.

[0068] In addition, although terms indicating directions such as up, down, left, right, front, and back are used in this specification, it will be obvious to those skilled in the art that these terms indicate relative positions and are used only for convenience of explanation, and may change depending on the position of the target object, the position of the observer, etc.

[0069] Although the present invention has been described above with reference to limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and various modifications and variations can be made by those having ordinary skill in the art to which the present invention pertains within the scope of the technical spirit of the present invention and the scope of the claims. [Explanation of symbols]

[0070] 100 Battery Packs 110 Battery Module 120 Cooling Unit 121 Coolant flow path 124 Yamabe 125 Valley

Claims

1. At least one battery module; A cooling unit having a refrigerant flow path formed therein through which a refrigerant flows; A battery pack comprising: The cooling unit comprises: A portion for mounting the battery module; a portion where the battery module is not mounted; Including, the battery module mounting portion is formed in a plate shape, and the at least one battery module is mounted on the battery module mounting portion, the portion where the battery module is not mounted includes at least one of a ridge portion bulging upward and a valley portion recessed downward, a space corresponding to the upwardly bulging peak portion is formed by the upwardly bulging peak portion, and a space corresponding to the downwardly recessed valley portion is formed by the downwardly recessed valley portion, and a lower portion of the valley portion protrudes downward.

2. The battery pack further includes an electrical module configured to control charging and discharging of the battery module; 2. The battery pack according to claim 1, wherein the electrical module has at least one curved surface formed in a shape corresponding to at least one of the peaks and valleys of the cooling unit at a position facing the at least one of the peaks and valleys of the cooling unit.

3. 3. The battery pack according to claim 2, further comprising a heat transfer member, one side of which is configured to connect to the electrical module and the other side of which is in contact with the battery module, the heat transfer member having at least one curved surface to face at least one of the peaks and the valleys of the cooling unit.

4. 4. The battery pack according to claim 3, wherein the heat transfer member has an internal space configured to accommodate a cable that electrically connects the electrical module and the battery module.

5. The battery module includes a coupling portion extending outward from one side surface and having a first bolt fastening hole formed therein, The battery pack according to claim 3 or 4, wherein the heat transfer member comprises a support portion having a second bolt fastening hole formed therein to be coupled to a coupling portion of the battery module.

6. The battery pack includes: a front plate coupled to a front end of the cooling unit; a rear plate coupled to a rear end of the cooling unit; a left plate coupled to a left end of the cooling unit; a right plate coupled to a right end of the cooling unit; 6. The battery pack according to claim 2, further comprising:

7. 7. The battery pack according to claim 6, further comprising a column member, the column member extending long from the left side to the right side of the electrical module so as to support the left plate and the right plate, respectively, at both ends of the column member having at least one curved surface so as to face at least one of the peaks and the valleys of the cooling unit.

8. The pillar member is a receiving portion located on the ridge portion of the cooling unit and recessed upward so that the ridge portion can be inserted therein; a protrusion located above the valley of the cooling unit and protruding downward so as to be inserted into a recessed space of the valley; The battery pack according to claim 7, comprising:

9. A vehicle comprising at least one battery pack according to any one of claims 1 to 8.

10. a vehicle body configured to mount the battery pack; 10. The vehicle according to claim 9, wherein the part of the vehicle body is adapted to be inserted into a space formed by the ridge of the cooling unit.

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