Battery pack and vehicle comprising the same

Abstract

A battery pack according to the present application has: a battery cell; a battery module including a module frame, one side of which is open and which accommodates the battery cell, and a cover plate covering the open side of the module frame; and a battery pack frame configured to support and accommodate the battery module, wherein the module frame, the cover plate, and the battery pack frame can be fixed by a coupling member.

Description

Technical Field

[0001] This application claims the benefit of Korean Patent Application No. 2024-0134995, filed on October 4, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0002] This disclosure relates to a battery pack and a vehicle including the battery pack. Background Technology

[0003] The surge in demand for portable electronic devices, such as laptops, cameras, and mobile phones, along with the accelerated commercialization of robots and electric vehicles, has intensified research into high-performance secondary batteries capable of repeated charge and discharge cycles.

[0004] Among currently commercially available secondary batteries such as nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium-ion batteries, lithium-ion batteries have attracted widespread attention compared to nickel-based batteries due to their high energy density, low self-discharge rate, and minimal memory effect, which refers to the reduction in usable capacity when a battery is recharged before it has been fully discharged.

[0005] Lithium-ion rechargeable batteries typically use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively. A lithium-ion rechargeable battery includes: an electrode assembly in which positive and negative electrode plates, coated with the positive and negative active materials respectively, are arranged opposite each other, with a separator located between the positive and negative electrode plates; and a casing, i.e., the battery housing, which seals the electrode assembly and electrolyte together.

[0006] Generally, based on the shape of the casing, lithium secondary batteries are divided into: can-type secondary batteries, in which the electrode assembly is housed in a metal can; and pouch-type secondary batteries, in which the electrode assembly is housed in a pouch formed of aluminum laminates.

[0007] Recently, secondary batteries have been widely used not only in small devices (such as portable electronic devices) but also in large and medium-sized devices (such as electric vehicles and energy storage systems (ESS)) as a driving power source or for energy storage. Multiple secondary batteries can be electrically connected and housed together in a module housing to form a single battery module, and multiple such battery modules can then be electrically connected in a confined space to form a battery pack with increased energy density.

[0008] However, when multiple battery modules and / or battery cells are densely arranged in such a confined space, they may be prone to accidents such as fires or explosions. In particular, when battery packs are used in electric vehicles, the orientation of the venting channels for discharging gases in the event of an event such as thermal runaway within the battery pack is a critical safety consideration, as it directly affects the safety of the electric vehicle and its occupants. Summary of the Invention

[0009] Technical goals

[0010] The technical objective of this disclosure, conceived in view of the above-mentioned problems, is to provide a battery pack configured to allow downward gas discharge.

[0011] Technical solution

[0012] According to one aspect, a battery pack is provided, the battery pack comprising: a battery module, the battery module including: a battery cell; a module frame configured to have an opening on one side and accommodate the battery cell; and a cover plate covering the opening on one side of the module frame; and a battery pack frame configured to support and accommodate the battery module, wherein the module frame, the cover plate, and the battery pack frame can be fastened via connecting members.

[0013] The battery pack frame can be in direct contact with the module frame.

[0014] The module frame may include: a substrate, the battery module being formed on the opposite side of the cover plate, and including a fastening portion into which the connecting member is inserted; and a plurality of side plates connected to the substrate and covering the side surfaces of the battery module.

[0015] The fastening part can be formed by a deep drawing process.

[0016] The fastening part can be located near the corner of the substrate.

[0017] The substrate and the plurality of side plates can be integrally formed by a pressing process.

[0018] The plurality of side panels may include: two first side panels disposed opposite to each other; and two second side panels disposed opposite to each other between the two first side panels. The two first side panels may be connected to the two second side panels.

[0019] Each end of the two first side plates may be provided with a connecting portion that bends toward the second side plate and overlaps with the second side plate.

[0020] The connecting part can be welded to the second side plate.

[0021] The connecting part can be bolted to the second side plate.

[0022] The connecting part can be riveted to the second side plate.

[0023] The battery pack frame may include: a first tray supporting the battery module; and a second tray disposed on the opposite side of the battery module with respect to the first tray and spaced apart from the first tray.

[0024] The second tray may be provided with a support column, which is formed to protrude from the surface facing the first tray toward the first tray and support the lower surface of the battery module.

[0025] The support column can be connected to the cover plate and the module frame via the connecting member.

[0026] According to another aspect, a vehicle is also provided, the vehicle including a battery pack according to the present disclosure.

[0027] Invention Effects

[0028] According to the example implementation, the gas discharge direction can be set towards the bottom of the battery module. By simply providing an exhaust port in the cover and arranging it to cover the lower side of the battery module, the gas discharge direction can be set downwards without adding a separate exhaust device and / or additional components for forming an exhaust channel. The weight of the battery module can be used to seal the gap between the first and second trays, thereby improving sealing performance and effectively preventing gas leakage into the gap between the cover and the first tray after passing through the exhaust port. Therefore, considering that the battery pack is typically mounted in the lower part of an electric vehicle, downward gas discharge can enhance passenger safety.

[0029] According to the example implementation, the manufacturing cost of the battery pack can also be reduced and the manufacturing method simplified because there is no need to add separate components for connecting the battery modules to the battery pack frame. This is possible because by integrally forming the fastening portion in the substrate, after the substrate and side plates are connected, the battery modules can be connected to the battery pack frame by inserting the connecting members into the fastening portion, without the need for additional processes. In particular, the manufacturing method can be further simplified when the fastening portion is formed in the substrate by a deep drawing process. Attached Figure Description

[0030] Figure 1 This is an exploded view of a portion of a battery pack according to an exemplary embodiment of the present disclosure.

[0031] Figure 2This is an assembly perspective view of the battery modules included in a battery pack according to an exemplary embodiment of the present disclosure.

[0032] Figure 3 This is an exploded perspective view of a battery module included in a battery pack according to an exemplary embodiment of the present disclosure.

[0033] Figure 4 This is a diagram illustrating a cover plate included in a battery module according to an exemplary embodiment of the present disclosure.

[0034] Figure 5 This is a diagram illustrating the module framework included in a battery module according to an exemplary embodiment of the present disclosure.

[0035] Figure 6 This is a diagram showing the state of the module frame included in a battery module according to an exemplary embodiment of the present disclosure before assembly.

[0036] Figure 7 This is a diagram illustrating a battery module disposed in a battery pack frame according to an exemplary embodiment of the present disclosure.

[0037] Figure 8 This is a diagram illustrating the connection relationship between a first side plate and a second side plate included in a battery module according to another exemplary embodiment of the present disclosure.

[0038] Figure 9 This is a diagram illustrating the connection relationship between a first side plate and a second side plate included in a battery module according to yet another exemplary embodiment of the present disclosure.

[0039] Figure 10 This is a diagram illustrating a first tray included in a battery pack frame according to an exemplary embodiment of the present disclosure.

[0040] Figure 11 This is a diagram illustrating a second tray included in a battery pack frame according to an exemplary embodiment of the present disclosure.

[0041] Figure 12 This is a diagram illustrating a vehicle according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0042] Before describing the exemplary embodiments of this disclosure, the terms or words used in this disclosure and the appended claims are not limited to their general or dictionary definitions, and will be interpreted as such in accordance with the concepts that the inventors may appropriately define in order to best describe the principles of their invention. Therefore, the exemplary embodiments described in this disclosure and the configurations shown in the accompanying drawings are merely the most desirable exemplary embodiments and do not represent all the technical spirit of this disclosure, and it should be understood that various equivalents and modifications may exist in place of the exemplary embodiments and configurations at the time of filing this application.

[0043] The same reference numerals or symbols shown in each of the accompanying drawings of this disclosure indicate parts or components that perform substantially the same function. For ease of interpretation and understanding, the same reference numerals or symbols may be used to describe different exemplary embodiments. That is, although parts with the same reference numerals are shown in multiple drawings, the multiple drawings do not necessarily imply a single exemplary embodiment.

[0044] In the following description, singular terms include plural terms unless there is an obvious and contextually conflicting description. Terms such as “comprising” or “including” are used to indicate the presence of features, numbers, operations, actions, elements, components, or combinations thereof, and it should be understood that these terms do not preclude the possibility that one or more other features, numbers, operations, actions, elements, components, or combinations thereof may be present or added.

[0045] Furthermore, it should be understood that terms such as “upper side,” “upper surface,” “lower side,” “lower surface,” “side surface,” “front surface,” or “rear surface” are based on the orientation shown in the accompanying drawings and may vary depending on the orientation of the corresponding object.

[0046] Furthermore, in this disclosure and claims, terms including ordinal numbers such as "first" or "second" may be used to distinguish elements. These ordinal numbers are used to differentiate identical or similar parts from one another, and the meaning of the terms should not be construed as limiting by the use of these ordinal numbers. For example, elements combined with such ordinal numbers should not be interpreted as restricting the order of use or arrangement by the ordinal numbers. The various ordinal numbers may be used interchangeably if necessary.

[0047] In the following description, exemplary embodiments of the present disclosure will be illustrated with reference to the accompanying drawings. However, the spirit of the present disclosure is not limited to the exemplary embodiments presented. For example, those skilled in the art who understand the spirit of the present disclosure may suggest other exemplary embodiments that are included within the scope of the spirit of the present disclosure by adding, modifying, or deleting elements; however, these are also considered to be included within the scope of the spirit of the present disclosure. For clarity, the shapes and dimensions of the elements in the drawings may be exaggerated.

[0048] Figure 1 This is an exploded view of a portion of a battery pack 1 according to an exemplary embodiment of the present disclosure. Figure 2 This is an assembled perspective view of the battery module 10 included in the battery pack 1 according to an exemplary embodiment of the present disclosure. Figure 3 This is an exploded perspective view of a battery module 10 included in a battery pack 1 according to an exemplary embodiment of the present disclosure.

[0049] Reference Figures 1 to 3 According to this disclosure, the battery pack 1 may include a battery module 10 and a battery pack frame 20.

[0050] The battery module 10 may include a battery cell 110, a module frame 120, and a cover plate 130.

[0051] The battery cell 110 can be a pouch-type battery cell. The battery cell 110 may include an electrode assembly, an electrolyte, and a pouch-type casing. Multiple battery cells 110 may be stacked and arranged in one direction.

[0052] The module frame 120 may have an open side. The bottom side of the module frame 120 may also be open. The module frame 120 may be configured to accommodate a battery cell 110. The module frame 120 may have a box shape with a bottom opening to accommodate the battery cell 110 within its internal space. A cover plate 130 may cover one of the open sides of the module frame 120. The module frame 120 may be inserted into the inner surface of the cover plate 130. The module frame 120 may be coupled to the cover plate 130 by fitting it into the inner surface of the cover plate 130. The cover plate 130 may be provided with a vent H, configured to allow gases generated from the battery cell 110 to be released.

[0053] The battery pack frame 20 may be provided with a battery module receiving section 211 into which the battery module 10 is inserted. The battery module receiving section 211 may be an opening. The battery module receiving section 211 may be configured such that the lower part of the battery module 10 is inserted. At least a portion of the cover plate 130 of the battery module 10 may be inserted into the battery module receiving section 211. The battery pack frame 20 may be configured to accommodate the battery module 10. The battery pack frame 20 may include a partition wall W defining a receiving space for accommodating the battery module 10. The battery pack frame 20 may include an exhaust device D configured to exhaust gases generated from the battery cell 110. The battery pack frame 20 may be in direct contact with the module frame 120. That is, the module frame 120 may be directly accommodated within the battery pack frame 20 without the need for an additional plate located on the outside.

[0054] Figure 4 This is a diagram showing the cover plate 130 included in a battery module 10 according to an exemplary embodiment of the present disclosure. Figure 5 This is a diagram illustrating the module frame 120 included in a battery module 10 according to an exemplary embodiment of the present disclosure. Figure 6 This is a diagram showing the state of the module frame 120 included in the battery module 10 according to an exemplary embodiment of the present disclosure before assembly. Figure 7 This is a diagram showing a battery module 10 disposed in a battery pack frame 20 according to an exemplary embodiment of the present disclosure.

[0055] Reference Figures 4 to 7 The cover plate 130 may include an insertion portion 131 and a support portion 133.

[0056] The insertion portion 131 can be inserted into the battery module receiving portion 211 of the battery pack frame 20. The surface area of ​​the lower surface of the insertion portion 131 can be smaller than the surface area of ​​the opening of the battery module receiving portion 211, such that the insertion portion 131 is inserted into the battery module receiving portion 211. The outer surface of the insertion portion 131 can contact the side surface of the first tray 210 of the battery pack frame 20, which will be described later. The support portion 133 can extend from the insertion portion 131. The extension direction of the support portion 133 can be perpendicular to the insertion direction of the battery module 10 into the battery pack frame 20. The support portion 133 can be supported by engaging with the battery pack frame 20, thereby allowing the battery module 10 to be placed or secured to the first tray 210. The lower surface of the support portion 133 can contact the upper surface of the first tray 210 of the battery pack frame 20, which will be described later. In the height direction (Z-axis extension direction), the position of the support portion 133 can correspond to the upper end of the insertion portion 131. The support portion 133 may be formed as a rectangular strip along the periphery of the insertion portion 131. The support portion 133 may be configured to seal the gap between the first tray 210 and the second tray 220.

[0057] However, the type and shape of the battery cell 110 and corresponding components described above are not limited thereto. For example, the battery cell 110 can be any type of battery cell known prior to submission, such as a prismatic battery cell or a cylindrical battery cell, and it can be applied to the corresponding module frame 120, battery pack frame 20, cover plate 130, and other components described later.

[0058] According to this configuration, the direction of gas discharge can be set towards the bottom (negative Z-axis direction) of the battery pack 1. The downward direction of gas discharge can be achieved simply by providing an exhaust port H in the cover plate 130 and arranging the cover plate 130 to cover the lower side of the battery module 10, without the need for a separate exhaust device and / or additional components for forming an exhaust channel. The weight of the battery module 10 can be used to seal the gap between the first tray 210 and the second tray 220, thereby improving sealing performance and effectively preventing gas leakage into the gap between the cover plate 130 and the first tray 210 after passing through the exhaust port H. Therefore, considering that the battery pack 1 is typically installed in the lower part of an electric vehicle, downward gas discharge can enhance passenger safety.

[0059] Furthermore, the battery module 10 can be housed or secured within the battery module receiving portion 211 without additional bonding (such as welding) between the battery module receiving portion 211, the cover plate 130, and the module frame 120, simply by inserting the cover plate 130 into the battery module receiving portion 211 and the module frame 120 into the cover plate 130. Since the outer surface of the portion of the module frame 120 inserted into the cover plate 130 is supported by the cover plate 130, and the cover plate 130 is supported by the first tray 210, double support can be provided to the module frame 120. That is, structural stability sufficient to house or secure the battery module 10 within the battery module receiving portion 211 can be achieved solely through the structural characteristics of the battery module receiving portion 211, the cover plate 130, and the module frame 120, without the need for additional welding processes or increased material rigidity. Due to this structural stability, even if the interior of the module frame 120 expands due to the expansion of the battery cells 110, the deformation of the module frame 120 can be minimized, and the expansion can be constrained.

[0060] Return to reference Figures 4 to 7 The module frame 120 may include a base plate 121 and multiple side plates 123.

[0061] The substrate 121 and multiple side plates 123 can be integrally formed by a pressing process.

[0062] The substrate 121 can be disposed opposite to the cover plate 130. The substrate 121 may be provided with a fastening portion F. The fastening portion F may be disposed at a corner or outer region of the substrate 121 so as not to overlap with the battery cell 110 in the height direction (Z-axis direction). The fastening portion F can be formed by a deep drawing process. The fastening portion F can be formed in the substrate 121 by pressing a plate-shaped substrate 121 with an internal shape corresponding to the fastening portion F. The fastening portion F can be configured to receive a connecting member S2. The connecting member S2 can pass through the fastening portion F to connect the module frame 120, the cover plate 130, and the battery pack frame 20.

[0063] According to this configuration, the manufacturing cost of the battery pack 1 can be reduced and the manufacturing process can be simplified because no separate component is needed to connect the battery module 10 to the battery pack frame 20. This is because, by integrally forming the fastening portion F in the substrate 121, after the substrate 121 and the side plate 123 are connected, the battery module 10 can be connected to the battery pack frame 20 by inserting the connecting member S2 into the fastening portion F without additional processes. In particular, the manufacturing method can be further simplified when the fastening portion F is formed in the substrate 121 by a deep drawing process.

[0064] Return to reference Figure 5 and Figure 6Multiple side plates 123 can be connected to the substrate 121. The multiple side plates 123 can cover the side surfaces of the battery module 10. The multiple side plates 123 may include two first side plates 123a and two second side plates 123b. The two first side plates 123a can be disposed opposite to each other. The two second side plates 123b can be disposed opposite to each other between the two first side plates 123a.

[0065] Figure 8 This is a diagram illustrating the connection relationship between a first side plate 123a and a second side plate 123b included in a battery module 10 according to another exemplary embodiment of the present disclosure. Figure 9 This is a diagram illustrating the connection relationship between a first side plate 123a and a second side plate 123b included in a battery module 10 according to yet another exemplary embodiment of the present disclosure.

[0066] refer to Figure 8 and Figure 9 as well as Figure 7 Two first side plates 123a can be connected to two second side plates 123b. Each end of the first side plate 123a may be provided with a connecting portion 125 that bends toward and overlaps with the second side plate 123b. Figure 7 As shown, the connecting part 125 can be connected to the second side plate 123b via the connecting member S1. Alternatively, as Figure 8 As shown, the connecting portion 125 can be welded to the second side plate 123b. Welding can be laser welding performed using a laser beam while the connecting portion 125 of the first side plate 123a and the second side plate 123b overlap, or ultrasonic welding using an anvil and welding head. Alternatively, as... Figure 9 As shown, the connecting portion 125 can be press-fitted with the second side plate 123b. Press-fitting can refer to a joining method in which the connecting portion 125 of the first side plate 123a and the second side plate 123b are joined via a mold J2 and a pressing member J1 configured to apply pressure to the mold J2 while the second side plate 123b is in an overlapping state. In another example embodiment, the connecting portion 125 can be formed at each end of the second side plate 123b and connected to the first side plate 123a. Multiple side plates 123 can be inserted and fitted into the inner surface of the insertion portion 131 to connect the module frame 120 to the cover plate 130.

[0067] Figure 10 This is a diagram showing a first tray 210 included in a battery pack frame 20 according to an exemplary embodiment of the present disclosure. Figure 11 This is a diagram illustrating a second tray 220 included in a battery pack frame 20 according to an exemplary embodiment of the present disclosure.

[0068] refer to Figure 10 and Figure 11The battery pack frame 20 may include a first tray 210 and a second tray 220.

[0069] The first tray 210 can support the battery module 10. The battery module 10 can be disposed on the upper surface of the first tray 210. The first tray 210 can be provided with a battery module receiving portion 211. The first tray 210 can be provided with battery module receiving portions 211 corresponding to the number of battery modules 10. The first tray 210 can have a plate shape, and within the plate, the battery module receiving portions 211 can be formed in a shape corresponding to the shape of the lower part of the battery module 10, such as a rectangular opening. (See also...) Figure 7 The first tray 210 may also include a reinforcement 213 that extends from the battery module receiving portion 211 toward the second tray 220 and supports the side surface of the cover plate 130.

[0070] The second tray 220 can be positioned on the opposite side of the battery module 10, with the first tray 210 as a reference. The second tray 220 can be spaced apart from the first tray 210. The second tray 220 can be provided with a support post P protruding from the surface facing the first tray 210 toward the first tray 210. The support post P can support the lower surface of the cover plate 130. The support post P can be positioned at a corner or outer area of ​​the cover plate 130 so as not to overlap with the battery cell 110 in the height direction (Z-axis direction). (See also...) Figure 7 The connecting member S2, passing through the fastener F, can be connected to the support column P to connect the module frame 120, the cover plate 130, and the battery pack frame 20. The second tray 220 may include a side beam 221 and a central beam 223 that support the first tray 210 and define space.

[0071] According to this configuration of the present disclosure, even without a separate component for securing the battery module 10, the battery module 10 can be secured and placed in the battery pack frame 20 by inserting the insertion portion 131 of the cover plate 130 into the battery module receiving portion 211 and engaging and being supported by the first tray 210 with the support portion 133 of the cover plate 130. When the support post P is provided, the battery module 10 can be placed more effectively in the battery pack frame 20. When the connecting member S2 is connected to the support post P via the fastening portion F, the battery module 10 can be secured to the battery pack frame 20 more effectively.

[0072] By forming an opening, the battery module receiving part 211 of the first tray 210 can not only be used to fix the battery module 10, but also to directly connect the exhaust port H of the battery module 10 to the exhaust channel U.

[0073] An exhaust channel U, configured to allow gas generated from battery cell 110 to flow through, can be disposed between first tray 210 and second tray 220. (See also...) Figure 7 The exhaust passage U may include a first passage U1 flowing between the first tray 210 and the second tray 220 within the battery module 10, and a second passage U2 flowing between regions corresponding to adjacent battery modules. Gas flowing along the first passage U1 may flow in two rows along the second passage U2 within the space defined by the side beam 221 and the central beam 223, and then flow into the interior space of the central beam 223 through an exhaust port (not shown) or an exhaust device (not shown) located at the edge of the central beam 223. The interior space of the central beam 223 may be connected to an exhaust device D (see reference) of the battery pack frame 20. Figure 1 This allows gas to escape to the outside of battery pack 1.

[0074] The battery pack 1 may also include a battery pack cover C and a heat sink (not shown). The battery pack cover C may cover the battery pack frame 20. The battery pack cover C may cover one side of the opening of the battery pack frame 20. The heat sink may be disposed on the opposite side of the battery module receiving section 211 with reference to the battery module 10. That is, the heat sink may be disposed between the battery module 10 and the battery pack cover C. The heat sink may be configured to exchange heat with the battery module 10 using internally flowing coolant. For example, the coolant may be introduced into the heat sink from the outside in a cooled state, heated by heat conducted from the battery module 10 while flowing through specific channels disposed inside, and then discharged back to the outside. The coolant may have a circulation structure in which the coolant is cooled again on the outside and introduced into the heat sink and discharged after flowing through specific channels disposed inside to exchange heat with the battery module 10.

[0075] Figure 12 This is a diagram illustrating a vehicle V according to an exemplary embodiment of the present disclosure.

[0076] refer to Figure 12 The vehicle V according to this disclosure may include a battery pack 1. In addition to the battery pack 1, the vehicle V may also include various other components included in the vehicle V. For example, in addition to the battery pack 1, the vehicle V according to this disclosure may also include a body, a motor, and control devices (such as an electronic control unit (ECU)).

[0077] As described above, although this disclosure has been described with reference to the accompanying drawings and preferred embodiments, it will be apparent to those skilled in the art that various obvious modifications can be made without departing from the scope of this disclosure. Therefore, the scope of this disclosure should be interpreted by the appended claims, which are intended to include examples of such various modifications.

[0078] [Figure Labels]

[0079] 1 Battery pack

[0080] 10 Battery Modules

[0081] More than 110 battery cells

[0082] 120-Module Framework

[0083] 121 substrate

[0084] F Fastener

[0085] 123 Side panels

[0086] 123a First side plate

[0087] 123b Second side plate

[0088] 125 Connecting part

[0089] 130 cover plate

[0090] H exhaust port

[0091] U-shaped exhaust channel

[0092] D Exhaust device

[0093] 131 Insertion section

[0094] 133 Support section

[0095] 20 Battery pack frame

[0096] C Battery pack cover

[0097] W dividing wall

[0098] 210 First pallet

[0099] 211 Battery Module Receiving Unit

[0100] 213 Reinforcement Department

[0101] 220 Second tray

[0102] P Support Column

[0103] 221 Side Beam

[0104] 223 Center Beam

[0105] S-connecting components

Claims

1. A battery pack, the battery pack comprising: A battery module, comprising: a battery cell; a module frame configured to have an opening on one side and accommodate the battery cell; and a cover plate covering the opening on one side of the module frame; and A battery pack frame configured to support and house the battery module; The module frame, the cover plate, and the battery pack frame are fastened together by connecting members.

2. The battery pack according to claim 1, wherein, The battery pack frame is in direct contact with the module frame.

3. The battery pack according to claim 1, wherein, The module framework includes: A substrate, wherein the battery module is formed on the opposite side of the cover plate, and includes a fastening portion into which the connecting member is inserted; and Multiple side plates are connected to the substrate and cover the side surfaces of the battery module.

4. The battery pack according to claim 3, wherein, The fastening part is formed by a deep drawing process.

5. The battery pack according to claim 3, wherein, The fastening part is located near the corner of the substrate.

6. The battery pack according to claim 3, wherein, The substrate and the plurality of side plates are integrally formed by a pressing process.

7. The battery pack according to claim 3, wherein, The plurality of side plates include: Two first side panels arranged opposite each other; and Two second side plates are disposed between the two first side plates, facing each other. The two first side plates are connected to the two second side plates.

8. The battery pack according to claim 7, wherein, Each end of the two first side plates is provided with a connecting portion that bends toward the second side plate and overlaps with the second side plate.

9. The battery pack according to claim 8, wherein, The connecting part is welded to the second side plate.

10. The battery pack according to claim 8, wherein, The connecting part is bolted to the second side plate.

11. The battery pack according to claim 8, wherein, The connecting part is riveted to the second side plate.

12. The battery pack according to claim 1, wherein, The battery pack frame includes: A first tray, the first tray supporting the battery module; and The second tray is positioned on the opposite side of the battery module, with the first tray as a reference, and is spaced apart from the first tray.

13. The battery pack according to claim 12, wherein, The second tray is provided with a support column, which is formed to protrude from the surface facing the first tray toward the first tray and support the lower surface of the battery module.

14. The battery pack according to claim 13, wherein, The support column is connected to the cover plate and the module frame via the connecting member.

15. A vehicle comprising a battery pack according to any one of claims 1 to 14.

Images