CN218513578U - Battery pack and vehicle - Google Patents

Abstract

The application discloses battery package and vehicle, battery package include shell and electric core group, and the shell includes that the lid of bottom plate is located to bottom plate and lid, and the lid encloses with the bottom plate and establishes formation accommodation space, and multiseriate electric core group arranges along the first direction and sets up in accommodation space. For avoiding outside trampled extrusion force to constitute and cause the damage of electricity core group by the lid transmission, the battery package still includes and extends the supporting beam that sets up along the second direction, supporting beam sets up side by side with electricity core group and along thickness direction's both ends respectively butt in lid and bottom plate, and a supporting beam deviates from a side surface protrusion of bottom plate and sets up in a side surface that electricity core group deviates from the bottom plate, thereby make supporting beam can be prior to electricity core group atress, and transmit extrusion force to the bottom plate through a supporting beam, the electricity core group participation atress has been avoided, the absolute safety of electricity core group has been guaranteed, and then the reliability of battery package has been improved.

Description

Battery pack and vehicle

Technical Field

The application relates to the technical field of new energy automobile driving motors, in particular to a battery pack and a vehicle.

Background

With the development of new energy automobile technology, the requirement of consumers on the endurance mileage of electric automobiles is higher and higher. The performance of battery package is as the important factor that influences electric automobile continuation of the journey mileage, and the vehicle bottom is installed usually to battery package at present, through the lid with battery package and lower automobile body integration to further promote the energy cabin space of whole car, thereby reach the purpose of electric automobile long continuation of the journey mileage.

Since the lower body needs to bear the function of treading by the passengers, the external treading extrusion force is transmitted into the battery pack by the lower body. Receive the structural constraint of current battery package, the lid that the extrusion force can directly pass through the battery package under trampling the operating mode transmits to electric core group, very easily makes the electric core group in the battery package receive the damage, leads to the reliability reduction of battery package.

Therefore, it is highly desirable to provide a new battery pack.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery package and vehicle, can avoid electric core group to participate in the atress, has guaranteed the absolute safety of electric core group, has improved the reliability of battery package.

An aspect of an embodiment of the present application provides a battery pack, including: the shell comprises a bottom plate and a cover body covering the bottom plate, and the cover body and the bottom plate are arranged in a surrounding mode to form an accommodating space; the electric core groups are positioned in the accommodating space, and the multiple rows of electric core groups are arranged along the first direction; and the supporting beam is arranged side by side with the electric core group and extends along the second direction, the two ends of the supporting beam in the thickness direction of the battery pack are respectively abutted against the cover body and the bottom plate, one side surface of the supporting beam departing from the bottom plate protrudes out of one side surface of the electric core group departing from the bottom plate, and the first direction, the second direction and the thickness direction are intersected in pairs.

According to one aspect of the application, the electric core groups and the supporting beams are arranged alternately along the first direction, and the opposite surfaces of the electric core groups in the first direction are connected with the supporting beams which are arranged adjacent to the electric core groups.

According to one aspect of the present application, the cover body includes a plurality of protrusions and body portions alternately arranged at intervals in the first direction, at least a portion of the support beams are disposed in one-to-one correspondence with the protrusions, and an external force applied to the cover body is transmitted to the support beams through the protrusions and dispersed via the bottom plate.

According to one aspect of the application, the projection is stamped and formed, the projection having a recess facing the receiving space, the end of the support beam facing away from the floor being arranged to engage in the recess.

According to an aspect of this application, electric core group includes a plurality of electric cores of arranging along the second direction, and electric core includes one end open-ended casing and connects in the end cover of casing open end, and the end cover sets up towards the bottom plate, and a side surface that this somatic part and casing deviate from the end cover is laminated mutually.

According to one aspect of the application, the support beam is an i-beam structure including two flanges parallel to each other and a web connecting the two flanges, one of the two flanges being connected to the cover and the other being connected to the base plate.

According to one aspect of the application, the surfaces of the electric core groups opposite to the first direction are attached to the web plate, and the size of the web plate is larger than or equal to that of the electric core groups along the thickness direction.

According to one aspect of the application, at least one side of each support beam is correspondingly provided with a connecting area protruding from the battery core group along the second direction, and the battery pack further comprises a cooling member connected to the connecting area of each support beam along the first direction.

According to one aspect of the application, the support beam is provided with cooling parts along the two sides of the second direction, and the cooling parts are abutted to the end parts of the electric core group along the second direction.

Another aspect of the embodiments of the present application provides a vehicle, which includes the battery pack in the above embodiments.

The embodiment of the application discloses battery pack, including shell and electric core group, the shell includes that the lid of bottom plate and lid locating the bottom plate, and the lid encloses with the bottom plate and establishes and form accommodation space, and multiseriate electric core group arranges along the first direction and sets up in accommodation space. For avoiding outside trampled extrusion force to constitute and cause the damage of electricity core group by the lid transmission, the battery package still includes and extends the supporting beam that sets up along the second direction, supporting beam sets up side by side with electricity core group and along thickness direction's both ends respectively butt in lid and bottom plate, and a supporting beam deviates from a side surface protrusion of bottom plate and sets up in a side surface that electricity core group deviates from the bottom plate, thereby make supporting beam can be prior to electricity core group atress, and transmit extrusion force to the bottom plate through a supporting beam, the electricity core group participation atress has been avoided, the absolute safety of electricity core group has been guaranteed, and then the reliability of battery package has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a lower vehicle body and a battery pack integrated together according to an embodiment of the present application;

FIG. 2 is an exploded view of a lower vehicle body and battery pack provided in accordance with one embodiment of the present application;

fig. 3 is a schematic structural diagram of a battery pack provided according to an embodiment of the present application;

fig. 4 is an exploded schematic view of a battery pack provided according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a cell module provided according to an embodiment of the present application;

fig. 6 is a cross-sectional view of a battery pack provided according to an embodiment of the present application;

figure 7 is a side view of a cell module provided in accordance with an embodiment of the present application.

In the drawings:

100-a battery pack; 200-lower vehicle body;

1-a housing; 11-a base plate; 12-a cover body; 121-a convex part; 122-a body portion; 2-the electric core group; 21-battery cell; 211-a housing; 212-end cap; 3-a support beam; 31-a web; 32-a first flange; 33-a second flange; 4-a cooling element;

x-a second direction; y-a first direction; z-thickness direction.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should be understood as having a common meaning as understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise specified.

Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 and 2, a conventional battery pack 100 is generally mounted at the bottom of a vehicle and integrated with a lower vehicle body 200 to increase the energy compartment space of the entire vehicle. In addition, in order to ensure high-strength connection between the battery pack 100 and the lower body 200, the battery cell pack and the cover of the battery pack 100 are generally directly bonded together and integrated with the lower body 200. However, since the lower body 200 will take on the function of the passenger to tread under the treading condition, the external treading force will be transmitted from the lower body 200 to the battery pack 100 and directly transmitted to the electric core assembly through the cover of the battery pack 100 by adopting the structure of the battery pack 100, so that the electric core assembly 2 in the battery pack 100 is very easy to be damaged.

Therefore, the existing battery pack 100 structure cannot guarantee the safety of the electric core set under the treading condition on the premise that the battery pack 100 is integrated with the lower vehicle body 200, in order to solve the above technical problems, the applicant has conducted intensive research, and avoids the electric core set from participating in the stress through the arrangement of the supporting beam, so as to improve the safety of the electric core set, and the battery pack 100 and the vehicle according to the embodiment of the present application are described in detail below with reference to fig. 1 to 7.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a vehicle, where the vehicle may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or an extended range automobile. The battery pack 100 is disposed at the bottom of the vehicle, and the battery pack 100 may be used for supplying power to the vehicle, for example, the battery pack 100 may be used as an operating power source of the vehicle and may also be used as a driving power source of the vehicle to provide driving power for the vehicle instead of or in part instead of fuel or natural gas. Wherein, the bottom of vehicle is provided with down automobile body 200, and lower automobile body 200 can set up to frame rack structure, through setting up battery package 100 in frame rack structure to make the lid of battery package 100 and lower automobile body 200 integrate mutually, in order to promote the energy compartment space of whole car.

Referring to fig. 2 to 4, another embodiment of the present invention provides a battery pack 100, which includes a housing 1, a plurality of electric core assemblies 2 and a support beam 3, wherein the housing 1 includes a bottom plate 11 and a cover 12 covering the bottom plate 11, the cover 12 and the bottom plate 11 form an accommodation space, the electric core assemblies 2 are located in the accommodation space, and the plurality of electric core assemblies 2 are arranged along a first direction Y. Supporting beam 3 and electric core group 2 are just extended along second direction X side by side and are set up, and supporting beam 3 butts respectively in lid 12 and bottom plate 11 along the both ends of 100 thickness direction Z of battery package, and a side surface protrusion that supporting beam 3 deviates from bottom plate 11 in electric core group 2 deviates from a side surface setting of bottom plate 11, first direction Y, second direction X and two liang of crossing of thickness direction Z.

Battery package 100 in the embodiment of the application, with lower automobile body 200 integrated setting, for avoiding outside trampled's extrusion force to transmit to electric core group 2 through lid 12 by lower automobile body 200 and cause electric core group 2 to harm, battery package 100 still includes and extends a supporting beam 3 that sets up along second direction X, supporting beam 3 sets up side by side with electric core group 2 and along thickness direction Z's both ends respectively butt in lid 12 and bottom plate 11, and a supporting beam 3 deviates from a side surface protrusion of bottom plate 11 in electric core group 2 and deviates from a side surface setting of bottom plate 11, thereby make supporting beam 3 can be prior to electric core group 2 atress, and transmit the extrusion force to bottom plate 11 through supporting beam 3, electric core group 2 participation atress has been avoided, the absolute safety of electric core group 2 has been guaranteed, and then battery package 100's reliability has been improved.

Alternatively, the bottom plate 11 may be provided as an aluminum-profile bottom plate, and the cover 12 and the bottom plate 11 may be provided in a predetermined shape to be better disposed in the frame structure of the lower vehicle body 200. In addition, the edge of the cover 12 may be provided with a cover edge that bends outward, and the cover edge is connected to the bottom plate 11, for example, the outer edge of the cover edge may coincide with the outer edge of the bottom plate 11, and at this time, when the cover 12 is pressed, a part of the pressing force may also be transmitted to the bottom plate 11 through the cover edge, so as to reduce the pressing force applied to the supporting beam 3, and further improve the reliability of the battery pack 100.

It is understood that a plurality of support beams 3 may be distributed at intervals in the accommodating space, and each support beam 3 may be distributed mainly at a position on the lower vehicle body 200 where the treading is received, or may be distributed uniformly. The treading resistance of the battery pack 100 can be improved by increasing the number of the supporting beams 3, and when the battery pack 100 occupies the same space, the increase of the number of the supporting beams 3 will undoubtedly reduce the volume of the electric core assembly 2, and influence the energy density of the battery pack 100. Therefore, the supporting beams 3 are provided in a number and at positions sufficient to reliably support the cover 12, so as to prevent the cover 12 from pressing the cell assembly 2.

Referring to fig. 5, in some alternative embodiments, the electric core sets 2 and the support beams 3 are alternately arranged along the first direction Y, and the opposite surfaces of the electric core sets 2 in the first direction Y are connected to the support beams 3 arranged adjacent to each other. Arrange through electric core group 2 and a supporting beam 3 in turn, guaranteed that arbitrary electric core group 2 all sets up with a supporting beam 3 is adjacent to guarantee that the extrusion force that transmits to lid 12 all can transmit to bottom plate 11 from each supporting beam 3, guaranteed the absolute safety of each electric core group 2, further improved battery package 100's reliability. Wherein, because electric core group 2 distributes along first direction Y in turn with supporting beam 3, the event links to each other with its adjacent supporting beam 3 that sets up through the relative surface of electric core group 2 along first direction Y, can be connected each electric core group 2 and each supporting beam 3 for being a holistic electric core module to be more convenient for with electric core module an organic whole set up in accommodation space, in order when guaranteeing battery package 100 security, be more convenient for battery package 100's preparation.

Optionally, both sides of the cell module along the first direction Y may be set as the supporting beams 3, so that the cell module can not only bear the extrusion force along the thickness direction Z, but also improve the impact resistance of the cell module along the first direction Y, so as to further improve the safety of the battery pack 100.

Referring to fig. 2 to 6, in some alternative embodiments, the cover 12 includes a plurality of protrusions 121 and main portions 122 alternately arranged along the first direction Y, at least a portion of the support beams 3 are disposed in one-to-one correspondence with the protrusions 121, and the external force applied to the cover 12 is transmitted to the support beams 3 through the protrusions 121 and dispersed through the bottom plate 11. By arranging the plurality of protrusions 121 on the cover 12, when the cover 12 is pressed by the vehicle body 200 under the treading condition, the protrusions 121 on the cover 12 are firstly pressed, and at least part of the support beams 3 and the protrusions 121 are arranged in a one-to-one correspondence manner, so that the pressing force can be transmitted to the support beams 3 through the protrusions 121 on the cover 12, thereby further avoiding the stress of the battery pack 2 and ensuring the safety of the battery pack 100.

It is understood that the one-to-one correspondence between at least some of the supporting beams 3 and the convex portions 121 includes two cases, one is that the number of the supporting beams 3 is greater than the number of the convex portions 121, the supporting beam 3 may include a first sub-supporting beam 3 and a second sub-supporting beam 3, the first sub-supporting beam 3 and the convex portions 121 are disposed in one-to-one correspondence, and both ends of the second sub-supporting beam 3 in the thickness direction Z are respectively abutted against the main body portion 122 and the bottom plate 11 to serve as auxiliary supports. The dimension of the first sub-support beam 3 is greater than the dimension of the second sub-support beam 3 in the thickness direction Z, and the rigidity of the first sub-support beam 3 may be higher than that of the second sub-support portion to ensure the safety of the battery pack 100. The other is that the number of support beams 3 is equal to the number of protrusions 121, and the support beams 3 and the protrusions 121 are arranged in one-to-one correspondence, that is, the number of protrusions 121 is increased, so that when the lower vehicle body 200 presses the lid body 12, the pressing force can be dispersed by the plurality of protrusions 121, so that the transmission of the pressing force is facilitated, and the safety of the battery pack 100 is ensured.

For convenience of description, the support beam 3 and the convex portions 121 are provided in the same number and in a one-to-one correspondence.

Referring to fig. 4 to 6, in order to transmit the pressing force to the support beam 3 through the protrusion 121, in some alternative embodiments, the protrusion 121 is formed by punching, the protrusion 121 has a groove facing the receiving space, and the end of the support beam 3 facing away from the bottom plate 11 is inserted into the groove. Through the tip embedding recess with supporting beam 3, can make convex part 121 and supporting beam 3 contact to when convex part 121 received the extrusion force trampling under the operating mode, the extrusion force can be convenient for transmit for supporting beam 3 through convex part 121, and transmit to bottom plate 11 by supporting beam 3, and the biography power route of this extrusion force is more smooth and easy reliable, has guaranteed the absolute safety of electric core group 2.

In order to ensure a high-strength connection between the battery pack 100 and the lower vehicle body 200, the battery cell module is generally directly attached to the cover 12, that is, while the end of the support beam 3 away from the bottom plate 11 is attached to the groove, the surface of the battery cell group 2 away from the bottom plate 11 is also attached to the body 122. In order to facilitate the connection between the battery cell pack 2 and the cover 12, in some alternative embodiments, the battery cell pack 2 includes a plurality of battery cells 21 arranged along the second direction X, each battery cell 21 includes a housing 211 with an open end and an end cap 212 connected to the open end of the housing 211, the end cap 212 is disposed toward the bottom plate 11, and the body 122 is attached to a side surface of the housing 211 away from the end cap 212.

It is understood that the end cap 212 refers to a component covering the open end of the housing 211 to isolate the internal environment of the housing 211 from the external environment, and the shape of the end cap 212 may be adapted to the shape of the housing 211 to fit the housing 211. Since the end cap 212 may be provided with functional components such as electrode terminals, when the end cap 212 is attached to the main body 122 of the cover 12, only the functional components such as the electrode terminals are connected to the main body 122, and the connection area is small, so that the connection strength between the electric core assembly 2 and the cover 12 cannot be ensured. Therefore, by arranging the end cover 212 toward the bottom plate 11 and attaching the main body 122 and the side surface of the housing 211 away from the end cover 212, the connection area between the electric core assembly 2 and the cover 12 can be increased, and the electric core assembly 2 and the cover 12 can be glued by using structural glue, so as to ensure the connection strength between the electric core assembly 2 and the cover 12.

Referring to fig. 4 to 6, in some alternative embodiments, the support beam 3 is an i-beam structure including two parallel flanges, one of which is connected to the cover 12 and the other of which is connected to the base plate 11, and a web 31 connecting the two flanges. Through setting up a supporting beam 3 into I-beam structure, simple structure just supports stably. Wherein, the flange that will link to each other with lid 12 is defined as first flange 32, and the flange that will link to each other with bottom plate 11 is defined as second flange 33, through set up first flange 32 and second flange 33 respectively at web 31 along thickness direction Z's both sides, can increase the area of contact of a supporting beam 3 with lid 12 and bottom plate 11, then can improve the joint strength of a supporting beam 3 with lid 12 and bottom plate 11, then also be convenient for the transmission of extrusion force, improve the reliability of transmission route.

Wherein, along the first direction Y, the width of the first flange 32 may be equal to the width of the second flange 33 to facilitate the preparation of the support beam 3. The width of the first flange 32 or the second flange 33 may also be increased appropriately according to the structures of the cover 12 and the base plate 11 to improve the support, that is, the specific widths of the first flange 32 and the second flange 33 may be adjusted according to the structures of the cover 12 and the base plate 11, which is not limited in this embodiment of the present invention.

Alternatively, the first flange 32 and the second flange 33 may be adhered to the lid 12 and the base plate 11 by structural adhesive, or the first flange 32 and the second flange 33 may be connected to the lid 12 and the base plate 11 by mechanical connection and by cooperation with the structural adhesive. For example, the first flange 32 may be matched with the protrusion 121, so that the first flange 32 is connected to the groove through a clearance fit, and a structural adhesive may be disposed in the groove to ensure the connection strength of the first flange 32 and the cover 12. Meanwhile, a sliding groove extending along the second direction X can be formed in the bottom plate 11, the sliding groove is matched with the second flange 33, the sliding groove penetrates through one end of the bottom plate 11 to form an opening, the second flange 33 can be inserted from the opening and is connected with the sliding groove, and structural adhesive can be arranged in the sliding groove to ensure the connection strength of the second flange 33 and the bottom plate 11. In addition, the first flange 32 and the second flange 33 may be connected to the cover 12 and the base plate 11 by other mechanical connection structures, which can ensure the connection strength between the support beam 3 and the cover 12 and the base plate 11.

Referring to fig. 4 to 6, since the support beam 3 needs to ensure that the side surface of the support beam facing away from the bottom plate 11 is protruded from the side surface of the electric core assembly 2 facing away from the bottom plate 11, in some alternative embodiments, the surface of the electric core assembly 2 opposite to the first direction Y is attached to the web plate 31, and the size of the web plate 31 is greater than or equal to the size of the electric core assembly 2 along the thickness direction Z. Wherein, 2 accessible structural adhesives of electric core group bond in web 31, are greater than the size of electric core group 2 through the size that makes web 31, can guarantee when electric core group 2 connects in web 31, and first edge of a wing 32 and second edge of a wing 33 can bulge in the both ends of electric core group 2 edge thickness direction Z to the atress of electric core group 2 has been avoided.

Alternatively, one side surface of the electric core assembly 2 departing from the bottom plate 11 and one end of the web 31 departing from the bottom plate 11 can be leveled, so as to facilitate the connection between the electric core assembly 2 and the supporting beam 3, and meanwhile, by making the height of the protrusion 121 of the upper protruding part 121 of the cover 12 relative to the body part 122 equal to the dimension of the first flange 32 along the thickness direction Z, the protruding part 121 and one side surface of the first flange 32 departing from the bottom plate 11 can be attached, and the body part 122 and the electric core assembly 2 can be attached when the cover 12 is covered on the electric core assembly 2 and the supporting beam 3.

Referring to fig. 4 to 7, at least one side of each support beam 3 is correspondingly provided with a connection region protruding from the electric core pack 2 along the second direction X, and the battery pack 100 further includes a cooling member 4, wherein the cooling member 4 is connected to the connection region of each support beam 3 along the first direction Y. Through linking to each other cooling member 4 and the tip of a supporting beam 3 along second direction X, can control a supporting beam 3's temperature for supporting beam 3 can also regard as the liquid cooling board of electric core group 2 when undertaking the structure carrier, with the cooling of realizing electric core group 2 through a supporting beam 3. Alternatively, the cooling element 4 may be provided as a water pipe.

In some alternative embodiments, the support beam 3 is provided with cooling members 4 on both sides along the second direction X, and the cooling members 4 are disposed to abut against the end portions of the electric core assembly 2 along the second direction X. Through making 4 butt electric core group 2 settings of cooling member, also can restrict the position of electric core group 2 along second direction X to with the electric core module of cooling member 4, electric core group 2 and supporting beam 3 formation an organic whole setting, further improve battery package 100's reliability.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A battery pack (100), comprising:

the shell (1) comprises a bottom plate (11) and a cover body (12) covering the bottom plate (11), wherein the cover body (12) and the bottom plate (11) are arranged in a surrounding mode to form an accommodating space;

the electric core groups (2) are positioned in the accommodating space, and a plurality of rows of the electric core groups (2) are arranged along a first direction (Y);

supporting beam (3), with electric core group (2) just extend the setting along second direction (X) side by side, supporting beam (3) are followed the both ends of battery package (100) thickness direction (Z) respectively the butt in lid (12) with bottom plate (11), just supporting beam (3) deviate from a side surface protrusion of bottom plate (11) in electric core group (2) deviates from a side surface setting of bottom plate (11), first direction (Y) second direction (X) with two liang of crossing in thickness direction (Z).

2. The battery pack (100) according to claim 1, wherein the electric core groups (2) and the support beams (3) are alternately arranged along the first direction (Y), and the surfaces of the electric core groups (2) opposite to each other in the first direction (Y) are connected to the support beams (3) arranged adjacent to each other.

3. The battery pack (100) according to claim 2, wherein the cover body (12) includes a plurality of protrusions (121) and body portions (122) alternately arranged at intervals in the first direction (Y), at least some of the support beams (3) are arranged in one-to-one correspondence with the protrusions (121), and the external force applied to the cover body (12) is transmitted to the support beams (3) through the protrusions (121) and dispersed via the base plate (11).

4. A battery pack (100) according to claim 3, wherein the protrusion (121) is stamped and formed, the protrusion (121) having a recess facing the receiving space, the end of the support beam (3) facing away from the base plate (11) fitting into the recess.

5. The battery pack (100) according to claim 3, wherein the battery cell group (2) comprises a plurality of battery cells (21) arranged along the second direction (X), the battery cells (21) comprise a shell (211) with one open end and an end cap (212) connected to the open end of the shell (211), the end cap (212) is disposed towards the bottom plate (11), and the body part (122) is attached to a side surface of the shell (211) facing away from the end cap (212).

6. The battery pack (100) according to claim 2, wherein the support beam (3) is an i-beam structure comprising two flanges parallel to each other, one of which is connected to the cover (12) and the other of which is connected to the base plate (11), and a web (31) connecting the two flanges.

7. The battery pack (100) according to claim 6, wherein the surfaces of the electric core pack (2) opposite to the first direction (Y) are attached to the web (31), and the size of the web (31) is greater than or equal to the size of the electric core pack (2) in the thickness direction (Z).

8. The battery pack (100) according to claim 1, wherein at least one side of each of the support beams (3) is provided with a connection region protruding from the electric core pack (2) in the second direction (X), and the battery pack (100) further comprises a cooling member (4), wherein the cooling member (4) is connected to the connection region of each of the support beams (3) in the first direction (Y).

9. The battery pack (100) according to claim 8, wherein the support beam (3) is provided with the cooling member (4) at both sides in the second direction (X), and the cooling member (4) is disposed against the end of the electric core pack (2) in the second direction (X).

10. A vehicle, characterized by comprising the battery pack (100) of any one of claims 1 to 9.

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