WO2024027101A1

WO2024027101A1 - Battery cell module, battery pack structure and electric vehicle

Info

Publication number: WO2024027101A1
Application number: PCT/CN2022/144279
Authority: WO
Inventors: 罗峥; 席兵荣
Original assignee: 欣旺达动力科技股份有限公司
Priority date: 2022-08-01
Filing date: 2022-12-30
Publication date: 2024-02-08
Also published as: CN115064830B; CN115064830A

Abstract

Disclosed are a battery cell module, a battery pack structure and an electric vehicle. The present application aims to enable, by means of providing a raised structure having an inclined face on the side, which is away from the battery cell module, of each of first side plates fixed to the battery cell module by means of bonding, the tooling precision not to be excessively high during the operation of hoisting the battery cell module to mount the battery cell module in a box, thereby making it convenient for the battery cell module to be subsequently easily assembled in an accommodation recess of a box body. In addition, the structure design can allow a larger tolerance, so that tooling costs can be greatly reduced. Moreover, after the battery cell module is mounted in the box body, a glue bonding region between the battery cell module and the box body is controllable, such that the defect of all gaps between the first side plate and the box body needing to be filled during conventional glue injection can be overcome, and the problems of excessive bonding, excessive glue, etc. can be prevented.

Description

A battery cell module, battery pack structure and electric vehicle

This application claims priority to the Chinese patent application filed with the China Patent Office on August 1, 2022, with application number 202210917310.4 and the invention title "Battery Cell Module, Battery Pack Structure and Electric Vehicle", the entire content of which is incorporated by reference. in this application.

Technical field

This application relates to the field of electric vehicles, and more specifically to a battery cell module, a battery pack structure and an electric vehicle.

Background technique

In recent years, the new energy industry has developed rapidly, and the requirements for power battery packs have become increasingly higher. The safety performance and mechanical strength of battery modules have also become important criteria for evaluating the structural quality of power battery modules. Currently, in common technology, most battery modules require strict alignment before they can be installed into the box through hoisting operations. After loading into the box, a large amount of structural glue is usually injected to fill the battery core and the battery. In the gaps formed by the bottom of the core, large surfaces, small surfaces, etc., this method uses a larger amount of glue, and excess bonding is not conducive to lightweighting and cost reduction of the battery system.

technical problem

Embodiments of the present application provide a battery cell module, a battery pack structure and an electric vehicle to solve the existing problems in the prior art that require strict alignment and excessive bonding when the battery module is assembled into a box.

Technical solutions

According to one aspect of the present invention, an embodiment of the present application provides a battery core module, including: a battery core assembly, the battery core assembly includes a plurality of battery core groups that are fixedly connected in sequence, and the plurality of battery core groups are fixedly connected in sequence. The battery core group forms two opposite first sides and two opposite second sides, each of the battery core groups includes a plurality of battery cores arranged in an array; the housing includes two first side plates and two second side plates, the two first sides of the battery core assembly are adhesively connected to the two first side plates respectively, and the two second sides of the battery core assembly are respectively adhesively connected to the two second side plates; wherein the surface of the first side plate away from the battery core assembly is provided with a protruding structure along the length direction of the first side plate, and the The surface of the side of the protruding structure away from the battery core assembly is a slope.

In some embodiments, the protruding structure includes a first parallel plane and a second plane, the inclined plane is located between the first plane and the second plane, and the width of the first plane is greater than the width of the first plane. The width of the second plane is such that the cross section of the protruding structure is a right-angled trapezoid, wherein the inclined plane constitutes the hypotenuse of the right-angled trapezoid, and the first plane and the second plane respectively constitute the The two bases of a right-angled trapezoid.

In some embodiments, a first elastic component is disposed on the second plane of the protruding structure, and the cross-section of the first elastic component is rectangular, wherein the length of the first elastic component is the same as the length of the first elastic component. The second planes have the same length, and the width of the first elastic component is greater than or equal to the width of the second plane.

In some embodiments, one or more second elastic components are provided on the inclined surface, each second elastic component is fixedly connected to the inclined surface, and each second elastic component is connected to the inclined surface of the inclined surface. The contact surface is a horizontal surface.

In some embodiments, two second elastic components are provided on the inclined surface, and the two second elastic components are respectively located at both ends of the inclined surface, wherein each second elastic component has a length of The extension direction of the edge intersects the extension direction of the first elastic component, and each of the second elastic components is in sealing contact with the first elastic component.

In some embodiments, one or more third elastic members are further disposed between the two second elastic members, wherein the extension direction of each third elastic member on the long side is consistent with the extension direction of the third elastic member. The extending directions of an elastic component intersect, and each third elastic component is in sealing contact with the first elastic component.

In some embodiments, the protruding structure has one or more hollow structures penetrating the protruding structure in the extending direction of the protruding structure.

According to another aspect of the present invention, a battery pack structure is also provided. The battery pack structure includes a box and one or more battery cell modules as described in the previous embodiments. The box includes a frame and one or more battery core modules. A plurality of longitudinal beams, the frame and the one or more longitudinal beams form a plurality of receiving slots; the box also includes one or more cross beams, the one or more cross beams assist in supporting the battery core module ; Wherein, the frame and the one or more longitudinal beams are provided with a step structure that is adapted in position and shape to the convex structure of the battery module.

In some embodiments, the battery core modules are placed in the plurality of receiving slots in a one-to-one correspondence, and the battery core modules are fixedly connected to the box through the protruding structure.

In some embodiments, the step structure includes a first step surface and a second step surface and an inclined surface located between the first step surface and the second step surface, wherein the battery core module The raised structure is supported by the first stepped surface of the corresponding stepped structure, and the inclined surface of the raised structure is parallel to the inclined surface of the corresponding stepped structure.

In some embodiments, the first elastic component on the protruding structure is located on the first step surface of the corresponding step structure and is pressed and abutted against the first step surface in an elastically deformed manner. , and the second elastic component on the protruding structure is pressed and abutted with the corresponding inclined surface of the step structure in an elastically deformed manner, so as to form an opening on the second step surface. And the remaining surface is a sealed glue injection space.

According to another aspect of the present invention, an electric vehicle is also provided, including the battery pack structure described in the previous embodiment.

According to another aspect of the present invention, a battery pack structure is also provided. The battery pack structure includes a box and one or more battery cell modules according to any one of claims 1 to 7, The box body includes a frame and one or more longitudinal beams, and the frame and the one or more longitudinal beams form a plurality of receiving grooves; the box body also includes one or more cross beams, and the one or more cross beams assist Support the battery core module; wherein, the cross beam is provided with a step structure that is adapted in position and shape to the protruding structure of the battery core module.

beneficial effects

The battery cell module, battery pack structure and electric vehicle according to the embodiments of the present invention are intended to provide a protrusion with a slope on the side of the first side plate that is bonded and fixed to the battery cell module and away from the battery module. The structure allows the battery module to be installed in the box without too high a precision when hoisting it into the box, making it easy for the battery module to be easily assembled into the receiving groove of the box later. Moreover, this structural design can cover large tolerances. The tooling cost can be greatly reduced; and after the battery module is installed into the box, the adhesive area between the battery module and the box can be controlled, which can solve the conventional glue injection need to fill the first side plate and the box. The shortcomings of all gaps between the bodies are prevented to prevent problems such as excessive bonding and glue overflow.

Furthermore, the first elastic component and the second elastic component on the protruding structure can form a glue injection space with an open top and a sealed rest surface after being pressed and abutted with the step structure, so that the first elastic component can be The adhesive area between the side plate and the box is controllable. The adhesive with appropriate viscosity is selected according to the minimum size of the injection space. The adhesive can flow freely and fill the glue injection space without leaking out of the glue injection space. This solves the shortcoming of conventional glue injection that needs to fill all the gaps between the first side plate and the box body, and the shape and size of the protruding structure of the first side plate can be customized to avoid sticking. Problems such as excess knots and glue overflow.

Various aspects, features, advantages, etc. of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The above aspects, features, advantages, etc. of the present invention will become clearer from the following detailed description in conjunction with the accompanying drawings.

Reference is made to the following description and to the accompanying drawings, specific embodiments of the invention are disclosed in detail and illustrate the manner in which the principles of the invention may be employed. It should be understood that embodiments of the invention are not thereby limited in scope. Embodiments of the present invention include numerous alterations, modifications and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in the other embodiments, or in place of features in the other embodiments .

It should be emphasized that the term "comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic three-dimensional structural diagram of a battery module according to an embodiment of the present application;

Figure 2 is an exploded view of the battery module in the embodiment of Figure 1;

Figure 3 is a schematic three-dimensional structural diagram of the side plate in the embodiment of Figure 1;

Figure 4 is a schematic assembly diagram of the battery pack structure according to the embodiment of the present application;

Figure 5 is a schematic side view of the battery pack structure according to the embodiment of the present application;

Figure 6 is a partially enlarged structural schematic diagram of the bonding area between the side panel and the box frame in the embodiment of Figure 5;

Figure 7 is a partially enlarged structural schematic diagram of the bonding area between the side panel and the box longitudinal beam in the embodiment of Figure 5;

Figure 8 is a schematic diagram of a second elastic component provided on the slope of the protruding structure according to an embodiment of the present application;

Figure 9 is a schematic diagram of a second elastic component provided on the slope of the protruding structure according to yet another embodiment of the present application;

Figure 10 is a schematic plan view of the second elastic component in sealing contact with the first elastic component in Figure 9;

FIG. 11 is a schematic plan view of the structure in FIG. 9 in which one or more third elastic members are disposed between two second elastic members and in sealing contact with the first elastic member.

Embodiments of the invention

In order to facilitate understanding of various aspects, features and advantages of the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. It should be understood that the various embodiments described below are only for illustration and are not intended to limit the scope of the present invention.

In the description of this application, it should be understood that the orientation descriptions involved, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. are based on the orientation or positional relationship shown in the drawings, and are only In order to facilitate the description of the present application and simplify the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.

In the description of this application, several means one or more, plural means two or more, greater than, less than, exceeding, etc. are understood to exclude the original number, and above, below, within, etc. are understood to include the original number. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features. relation.

In the description of this application, unless otherwise explicitly limited, words such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in this application in conjunction with the specific content of the technical solution. In the description of this application, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" is intended to be in conjunction with the description of the embodiment. or examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment or example of the present application. In this document, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The word "including" mentioned in this article is an open-ended term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

Figure 1 is a schematic three-dimensional structural view of the battery cell module in the embodiment of the present application. Figure 2 is an exploded view of the battery cell module in the embodiment of Figure 1. Figure 3 is a schematic three-dimensional structural view of the side plate in the embodiment of Figure 1.

Referring to Figures 1 to 3, an embodiment of the present application provides a battery cell module 1000, which includes: a battery core assembly 100. The battery core assembly 100 includes a plurality of battery core groups 110 that are fixedly connected in sequence. The plurality of battery core groups 110 that are fixedly connected in sequence form two opposite first sides 100A and two opposite second sides 100B. Each of the battery core groups 110 includes a plurality of battery cells 1 arranged in an array; Housing 200. The housing 200 includes two first side plates 210 and two second side plates 220. The two first sides 100A of the battery core assembly 100 are respectively connected with the two first sides. The plates 210 are adhesively connected, and the two second sides 100B of the battery core assembly 100 are respectively adhesively connected to the two second side plates 220; wherein, the first side plates 210 are far away from the battery core. A protruding structure 212 is provided on one side surface of the assembly 100 along the length direction of the first side plate 210 , and the side surface of the protruding structure 212 away from the battery core assembly 100 is a slope 212C.

In the exemplary embodiment of the present application, each of the battery core groups 110 includes a plurality of battery cores 1 arranged in an array, and adjacent battery cores 1 are bonded and fixed. Therefore, multiple scattered battery cores 1 1 are fixed to each other and connected into a whole. Illustratively, multiple battery cores 1 are arranged in a row in the width direction of the battery core. Of course, in other embodiments, multiple battery cores 1 can also be arranged in a row in the length direction of the battery core. The present invention is There is no restriction on this. It should be noted that in the exemplary embodiment of the present application, the meaning of plurality is two or more. In actual use, the plurality of battery cells 1 may be, for example, 2, 3, 4 or more. , you can choose flexibly according to actual needs.

Among them, the first side plate 210 is evenly coated with glue on the smooth surface on one side close to the battery core assembly 100 to fit and adhere to the side of the battery core assembly 100. After the glue solidifies, a simple Battery core module 1000; a protruding structure 212 extending along the length direction of the first side plate 210 is provided on the side surface of the first side plate 210 away from the battery core assembly 100, and the protruding structure 212 extends along the length direction of the first side plate 210. The surface of the side of the structure 212 away from the battery cell assembly 100 is a slope 212C, which enables the battery module 1000 to be installed in a box without too high a precision during hoisting operations, so that the battery module 1000 can be easily assembled later. in the corresponding receiving slot of the box.

It should be understood that in the above-mentioned housing 200, the first side plate 210 serves as a side plate and the second side plate 220 serves as an end plate. Alternatively, the first side plate 210 serves as an end plate and the second side plate 220 serves as an end plate. The side plate 220 serves as a side plate. In the implementation provided by the embodiment of the present application, the protruding structure 212 may be provided on either the side plate or the end plate.

In some embodiments, the protruding structure 212 may be a flexible material. The flexible material will deform after being acted upon by external force and is not easily damaged. Moreover, the protruding structure 212 made of flexible material is easier to install in actual use due to its deformability.

In some embodiments, the protruding structure 212 may be made of rigid material, such as plastic, metal, etc. The protruding structure 212 made of rigid material can have certain mechanical strength. Preferably, the protruding structure 212 is made of rigid material so that it can be integrally formed with the first side plate 210 and is not easily deformed or bent after being formed. For example, the first side plate 210 with the protruding structure 212 on one side surface is directly produced through a molding process, eliminating the need for subsequent assembly, thus saving assembly time.

Compared with common technologies, the technical solutions of the exemplary embodiments of the present application can, on the one hand, make the tooling precision of the battery module not need to be too high when loading into the box and hoisting the battery module, which facilitates the subsequent easy assembly of the battery module. in the receiving groove of the box, and this structural design can cover larger tolerances and significantly reduce tooling costs; on the other hand, after the battery module is installed into the box, the battery module and all the The adhesive area between the boxes is controllable, which can solve the shortcoming of conventional glue injection that needs to fill all the gaps between the first side plate and the box, and prevent problems such as excessive bonding and glue overflow.

In an exemplary embodiment, the protruding structure 212 includes a first parallel plane 212A and a second plane 212B, the inclined plane 212C is located between the first plane 212A and the second plane 212B, and the The width of the first plane 212A is greater than the width of the second plane 212B, so that the cross section of the sexual protruding structure 212 is a right-angled trapezoid, wherein the inclined surface 212C constitutes the hypotenuse of the right-angled trapezoid, and the The first plane 212A and the second plane 212B respectively constitute the two bases of the right-angled trapezoid. It should be understood that in other embodiments, the cross section of the protruding structure 212 may also be non-right-angled trapezoidal. In this case, the first plane 212A and the second plane 212B are in contact with the first side plate 210 . The plane has a certain tilt angle.

In some embodiments, a first elastic component 10 is disposed on the second plane 212B of the protruding structure 212 . The first elastic component 10 is made of elastic material, such as foam or rubber. , so that it has a certain amount of compression deformation when it is squeezed by stress. The first elastic member 10 has a long rectangular cross-section, wherein the length of the first elastic member 10 is the same as the length of the second plane 212B, and the width of the first elastic member 10 is greater than or equal to The width of the second plane 212B.

In some embodiments, as shown in FIG. 8 , one or more second elastic components 9 are provided on the inclined surface 212C. Each second elastic component 9 is fixedly connected to the inclined surface 212C, and each second elastic component 9 is fixedly connected to the inclined surface 212C. The contact surface between the second elastic component 9 and the inclined surface 212C is a horizontal surface. The second elastic component 9 is also made of elastic material, such as foam or rubber material, so that it has a certain amount of compression deformation when it is squeezed by stress. On the one hand, the inclined surface 212C of the protruding structure 212 can act as elastic protection to prevent wear caused by rigid contact; on the other hand, after the battery module 1000 is loaded into the box through hoisting operations, it can fill the box A part of the gap between the first side plate 210 and the first side plate 210 .

In some embodiments, as shown in FIGS. 9 and 10 , the one or more second elastic members 9 include two second elastic members 9 , and the two second elastic members 9 are respectively located on the inclined surface 212C. at both ends, wherein the extending direction of each second elastic member 9 on the long side intersects the extending direction of the first elastic member 10 , and each second elastic member 9 is connected to the first elastic member 9 . The elastic component 10 is in sealing contact.

In some embodiments, as shown in FIG. 11 , in addition to the second elastic members 9 provided at both ends of the slope 212C, one or more second elastic members 9 are also provided between the two second elastic members 9 . third elastic members 11 , wherein the extension direction of each third elastic member 11 on the long side intersects the extension direction of the first elastic member 10 , and each third elastic member 11 is connected to the extension direction of the first elastic member 10 . The first elastic component 10 is in sealing contact. On the one hand, the elastic protection effect on the inclined surface 212C of the protruding structure 212 can be enhanced. On the other hand, when bonding with the box body, one or more additional second elastic components 9 can also be used to bind the The adhesive area between the inclined surface 212C of the raised structure 212 and the box body is separated to facilitate the selection of an adhesive with appropriate viscosity according to the minimum size of the glue injection space and to better control the amount of filling glue.

In some embodiments, the protruding structure 212 has one or more hollow structures penetrating the protruding structure 212 in the extending direction of the protruding structure 212. By using the hollow structure, the protrusions can be saved. Structural 212 material reduces weight and improves the energy density of the battery pack.

In an exemplary embodiment, the protruding structure 212 and the first side plate 210 are both made of aluminum, and a surface with stable characteristics (aluminum surface) is formed on one side of the first side plate 210 by extrusion molding. It has a protective film layer of aluminum oxide, which is resistant to water vapor corrosion) and has a raised structure 212 with a hollow structure, and the wall thickness of the raised structure 212 of the hollow structure is uniform at each position, so that the raised structure 212 can have a constant shrinkage rate after being cooled by the outside during production and molding, thereby preventing unnecessary pits and other defects on the outer surface of the protruding structure 212 with a hollow structure.

According to another aspect of the present application, a battery pack structure is also provided. The battery pack structure includes a box and one or more battery cell modules as described in the above embodiments.

FIG. 4 is a schematic assembly diagram of the battery pack structure according to the embodiment of the present application, and FIG. 5 is a schematic side view of the battery pack structure according to the embodiment of the present application.

As shown in Figures 4 and 5, one or more accommodation slots are provided in the box 300, and the battery module 1000 is placed in the one or more accommodation slots in a one-to-one correspondence, and the The battery module 1000 is fixedly connected to the box 300 through the protruding structure 212 .

In some embodiments, the box 300 includes a frame 5 and one or more longitudinal beams 61 , and the frame 5 and one or more longitudinal beams 61 form a plurality of receiving slots; the box 300 also includes One or more cross beams 62 assist in supporting the battery core module 1000; wherein, the frame 5 and the one or more longitudinal beams 61 are provided with the battery core module 1000 in position and shape. The step structure 310 is adapted to the protruding structure 212 of the module 1000; or, the cross beam 62 is provided with a step structure 310 that is adapted in position and shape to the protruding structure 212 of the battery module 1000. The step structure 310.

FIG. 6 is a partially enlarged structural schematic diagram of the bonding area between the side panel and the box frame in the embodiment of FIG. 5 . FIG. 7 is a partially enlarged structural schematic diagram of the bonding area between the side panel and the box longitudinal beam in the embodiment of FIG. 5 .

In an exemplary embodiment, the frame 5 of the box 300 and one or more longitudinal beams 61 are provided with protruding structures 212 corresponding in position and shape to the battery core module 1000 . Adapted step structure 310. The step structure 310 includes a first step surface 311 and a second step surface 312 and an inclined surface 313 located between the first step surface 311 and the second step surface 312, wherein the battery module 1000 The protruding structure 212 is supported by the first step surface 311 of the corresponding step structure 310, and the inclined surface 212C of the protruding structure 212 is parallel to the inclined surface 313 of the corresponding step structure 310, so that When the battery module 1000 is placed in the multiple receiving slots of the box 300 through hoisting operations, there is no need for strict alignment tolerances. It is only through the inclined surface 212C of the protruding structure 212 and the Cooperating with the inclined surface 313 of the step structure 310 , the battery module 1000 can be easily assembled into the corresponding receiving groove of the box 300 . Therefore, tooling costs can be significantly reduced.

In an exemplary embodiment, when one or more battery core modules 1000 are placed in multiple receiving slots of the box 300 through hoisting operations, the slope 212C of the protruding structure 212 and the The inclined surface 313 of the step structure 310 located on the frame 5 of the box 300 and the longitudinal beam 61 cooperates so that the first elastic component 10 on the protruding structure 212 can just be moved by the corresponding The first step surface 311 of the step structure 310 is supported and pressed against the first step surface 311 in an elastically deformed manner, and the second elastic component 9 on the protruding structure 212 is just able to The corresponding inclined surface 313 of the step structure 310 is contacted and pressed against the inclined surface 313 in an elastic deformation manner to form an opening on the second step surface 312 And the remaining surface is a sealed glue injection space. Illustratively, for example, the first elastic component 10 and the second elastic component 9 shown in FIG. 10 and FIG. 11 are in sealing contact, and the first elastic component 10 and the second elastic component 9 are in pressing and abutting with the step structure 310. Finally, a glue injection cavity with five sealing faces and one opening is formed. Therefore, the adhesive area between the first side plate 210 and the box 300 is controllable, and an adhesive with appropriate viscosity is selected according to the minimum size of the adhesive injection space. The adhesive can flow freely and fill the adhesive injection space without Will seep out of the glue injection space, thus solving the shortcoming of conventional glue injection that needs to fill all the gaps between the first side plate 210 and the box 300 , and the protrusions of the first side plate 210 The shape and size of the structure 212 can be customized to avoid problems such as excessive bonding and glue overflow.

In some embodiments, the first elastic component 10 on the protruding structure 212 contacts the corresponding first step surface 311 of the step structure 310 under the gravity of the battery core module. The downward pressure causes elastic deformation, and the second elastic component 9 on the protruding structure 212 is forced to compress after contacting the corresponding inclined surface 313 of the step structure 310 to cause elastic deformation.

It should be understood that in other embodiments, the protruding structure 212 of the first side plate 210 and the step structure 310 on the frame 5 of the box 300 and the cross beam 62 of the box 300 can also be used. The step structure 310 cooperates with each other to realize the solidification of the battery module 1000 in the box 300. The specific implementation method is similar to that described in the above embodiment, and will not be described again here.

Finally, the glue injection space is filled with adhesive through a glue injection instrument, and the battery core module 1000 and the box 300 are fixedly connected using the adhesive.

In an exemplary embodiment of the present application, it is intended that by providing a protruding structure with an inclined surface on the side of the first side plate that is bonded and fixed with the battery core module away from the battery core module, the battery core can be The tooling precision does not need to be too high when the module is put into the box and hoisted, so that the battery module can be easily assembled into the receiving groove of the box. Moreover, this structural design can cover larger tolerances and significantly reduce tooling costs; and After the battery module is installed into the box, the adhesive area between the battery module and the box is controllable, which can solve the problem of conventional glue injection that requires filling all the gaps between the first side plate and the box. Disadvantages: Prevent problems such as excessive bonding and glue overflow.

Further, by matching the convex structure of the first side plate with the step structure on the frame of the box and the step structure on the longitudinal beam of the box, the battery module can be placed in the box. Curing in vivo eliminates the need for redundant tooling and facilities to accelerate curing, and does not require additional space. This reduces the cost of tooling facilities and reduces the dependence on site resources during the production process.

Furthermore, the battery module can be directly bonded to the beam structure of the box, resulting in a large contact area, short force transmission path, and better mechanical properties, thus ensuring a good battery system mode and a more stable structure.

According to another aspect of the present application, an electric vehicle is also provided. The electric vehicle includes the battery pack structure as described in the above embodiment. By using the above-mentioned battery pack structure, it is beneficial to reduce the cost of electric vehicles and improve the endurance of electric vehicles.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be used Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A battery core module is characterized by including:

Battery core assembly, the battery core assembly includes a plurality of battery core groups that are fixedly connected in sequence, and the plurality of battery core groups that are fixedly connected in sequence form two opposite first sides and two opposite second sides, Each of the battery core groups includes a plurality of battery cells arranged in an array;

A shell, the shell includes two first side plates and two second side plates, the two first sides of the battery core assembly are respectively adhesively connected to the two first side plates, so The two second side surfaces of the battery core assembly are adhesively connected to the two second side plates respectively;

Wherein, a protruding structure is provided on a side surface of the first side plate away from the battery core assembly along the length direction of the first side plate, and the protruding structure is on a side surface away from the battery core assembly. It's a slope.
The battery core module according to claim 1, characterized in that:

The protruding structure includes a first parallel plane and a second plane, the inclined plane is located between the first plane and the second plane, and the width of the first plane is greater than the width of the second plane. , so that the cross section of the protruding structure is a right-angled trapezoid, wherein the inclined plane constitutes the hypotenuse of the right-angled trapezoid, and the first plane and the second plane respectively constitute two bases of the right-angled trapezoid. side.
The battery core module according to claim 2, characterized in that:

A first elastic component is disposed on the second plane, and the cross section of the first elastic component is rectangular, wherein the length of the first elastic component is the same as the length of the second plane, and the first elastic component has a rectangular cross-section. The width of the elastic component is greater than or equal to the width of the second plane.
The battery core module according to claim 3, characterized in that:

One or more second elastic components are provided on the inclined surface, each second elastic component is fixedly connected to the inclined surface, and the contact surface between each second elastic component and the inclined surface is a horizontal surface.
The battery core module according to claim 4, characterized in that:

Two second elastic components are provided on the inclined surface, and the two second elastic components are respectively located at both ends of the inclined surface, wherein the extension direction of each second elastic component on the long side is consistent with The extending directions of the first elastic components intersect, and each of the second elastic components is in sealing contact with the first elastic components.
The battery core module according to claim 5, characterized in that:

One or more third elastic members are further disposed between the two second elastic members, wherein the extension direction of each third elastic member on the long side is consistent with the extension direction of the first elastic member. intersect, and each third elastic component is in sealing contact with the first elastic component.
The battery module according to any one of claims 1 to 6, characterized in that:

The protruding structure has one or more hollow structures penetrating the protruding structure in the extending direction of the protruding structure.
A battery pack structure, characterized in that the battery pack structure includes a box body and one or more battery cell modules according to any one of claims 1 to 7, and the box body includes a frame and one or more A plurality of longitudinal beams, the frame and the one or more longitudinal beams form a plurality of receiving grooves;

The box also includes one or more cross beams, the one or more cross beams assist in supporting the battery core module;

Wherein, the frame and the one or more longitudinal beams are provided with a step structure that is adapted in position and shape to the protruding structure of the battery module.
The battery pack structure according to claim 8, characterized in that:

The step structure includes a first step surface and a second step surface and an inclined surface located between the first step surface and the second step surface, wherein the protruding structure of the battery core module is composed of The first step surface of the corresponding step structure supports, and the inclined surface of the protruding structure is parallel to the inclined surface of the corresponding step structure.
The battery pack structure according to claim 9, characterized in that:

The first elastic component on the protrusion structure is located on the first step surface of the corresponding step structure and is pressed and abutted with the first step surface in an elastically deformed manner, and the protrusion The second elastic component on the structure presses and abuts the corresponding inclined surface of the step structure in an elastically deformed manner to form an injection molding with an opening and a sealed remaining surface on the second step surface. glue space.
A battery pack structure, characterized in that the battery pack structure includes a box body and one or more battery cell modules according to any one of claims 1 to 7, and the box body includes a frame and one or more A plurality of longitudinal beams, the frame and the one or more longitudinal beams form a plurality of receiving grooves;

The box also includes one or more cross beams, the one or more cross beams assist in supporting the battery core module;

Wherein, the cross beam is provided with a step structure that is adapted in position and shape to the protruding structure of the battery core module.
The battery pack structure according to claim 11, characterized in that:

The step structure includes a first step surface and a second step surface and an inclined surface located between the first step surface and the second step surface, wherein the protruding structure of the battery core module is composed of The first step surface of the corresponding step structure supports, and the inclined surface of the protruding structure is parallel to the inclined surface of the corresponding step structure.
The battery pack structure according to claim 12, characterized in that:

The first elastic component on the protrusion structure is located on the first step surface of the corresponding step structure and is pressed and abutted with the first step surface in an elastically deformed manner, and the protrusion The second elastic component on the structure presses and abuts the corresponding inclined surface of the step structure in an elastically deformed manner to form an injection molding with an opening and a sealed remaining surface on the second step surface. glue space.
An electric vehicle, characterized by including the battery pack structure according to any one of claims 8 to 10.
An electric vehicle, characterized by including the battery pack structure according to any one of claims 11 to 13.