CN211828939U

CN211828939U - Battery module, battery pack and vehicle

Info

Publication number: CN211828939U
Application number: CN202020715583.7U
Authority: CN
Inventors: 杨重科; 冯帅; 赵亮; 李成亮; 翁志福
Original assignee: Kunshan Bao Innovative Energy Technology Co Ltd
Current assignee: Kunshan Bao Innovative Energy Technology Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-10-30
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a battery module, battery package and vehicle. Wherein, the battery module includes: the stacking body comprises a plurality of stacking bodies, and the stacking bodies are formed by stacking a plurality of soft-package battery cells; in one stacked body, the positive electrode tabs and the negative electrode tabs of each soft-package battery cell are respectively connected to form positive electrode connecting parts and negative electrode connecting parts, and the stacked body is connected in series with the negative electrode connecting part/positive electrode connecting part of the other stacked body adjacent to the stacked body through the positive electrode connecting part/negative electrode connecting part; a terminal holder provided at the positive electrode connecting portion or the negative electrode connecting portion of the stacked body located at both ends; a middle support; which is provided between two adjacent stacks. The single soft package battery cells in the battery module are connected in parallel, and the tabs are connected in series and are directly connected, so that the cascade connection among all stacked modules is realized. The series-parallel copper bars and the external mounting structures are reduced, the grouped accessories of the modules are reduced, the cost and the weight are reduced, and the space utilization rate is improved.

Description

Battery module, battery pack and vehicle

Technical Field

The utility model relates to a new energy automobile field particularly, the utility model relates to a battery module, battery package and vehicle.

Background

With the continuous popularization of new energy automobiles, the use requirements of power batteries in the new energy automobiles become higher and higher. Particularly, the requirement of a user on the continuous mileage of the new energy automobile is continuously improved, and the power battery pack of the common new energy automobile exceeds 1m in both the length direction and the width direction; however, in the current market, the length of the battery module is generally about 0.3m, so at least three or even more battery modules need to be arranged in the power battery pack.

The arrangement of a plurality of battery modules requires a fixing structure to be added to each battery module, and the assembly is complicated. Meanwhile, two adjacent battery modules need to be in power connection through an external power connecting piece. The battery module mounting structure is large, which not only increases the cost, but also increases the overall weight; simultaneously, in single module volume, mounting structure has taken more inner space, causes power battery module, and battery package whole capacity reduces, and battery module sets up more in the battery package, and the space is extravagant just more. In addition, because a plurality of external power connecting pieces are needed to be arranged for power connection, the internal resistance and the cost are increased, and the internal consumption and the cost of the power battery pack in use are improved.

In summary, the existing new energy automobile battery pack still needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an object of the present invention is to provide a battery module, a battery pack, and a vehicle. The single soft package battery cells in the battery module are connected in parallel, and the tabs are connected in series and are directly connected, so that the cascade connection among all stacked modules is realized. Thereby, having reduced the series-parallel connection copper bar and the outside mounting structure between the pile body, having reduced module annex in groups, reduce cost and weight improve space utilization, and then can hold more utmost point groups at the battery package, promote vehicle continuation of the journey mileage.

In one aspect of the present invention, the utility model provides a battery module. According to the utility model discloses an embodiment, this battery module includes:

the laminated battery comprises a laminated body, a battery body and a battery cover, wherein each laminated body comprises a plurality of stacked bodies, and each stacked body is formed by stacking a plurality of soft packaging cells; in one stacked body, positive lugs of the soft-package battery cells are connected to form a positive connecting part, negative lugs of the soft-package battery cells are connected to form a negative connecting part, and the stacked body is connected in series with the negative connecting part/positive connecting part of the other stacked body adjacent to the stacked body through the positive connecting part/negative connecting part;

a terminal holder provided at a positive electrode connecting portion or a negative electrode connecting portion of the stacked body at both ends; two ends of the tail end support are respectively provided with a first positioning structure, and the middle part of the tail end support is provided with a lug extending groove; the first positioning structure comprises a lateral guide post, a lateral guide groove, a lateral buckle, a lateral clamping groove and a bracket mounting hole, wherein the lateral guide post and the lateral guide groove are respectively positioned on two sides of the first positioning structure and are mutually matched; the side buckle and the side clamping groove are respectively positioned at two sides of the first positioning structure and are mutually matched;

the middle support is arranged between two adjacent stacked bodies, and one middle support is arranged between the two adjacent stacked bodies on the left and right; one end of the middle bracket is provided with a front guide post, the other end of the middle bracket is provided with a second positioning structure, and the middle part of the middle bracket is provided with a lug extending groove; the second positioning structure comprises a front guide groove, a side guide post, a side guide groove, a middle buckle and a bracket mounting hole, wherein the side guide post and the side guide groove are respectively positioned at two sides of the second positioning structure and are mutually matched; the front guide groove is matched with the front guide column;

the side plates are arranged on the left side and the right side of the laminated body, a plurality of side plate mounting holes and side plate clamping grooves are formed in the side plates, the side plate mounting holes and the support mounting holes are coaxially arranged, and the side plate clamping grooves are matched with the middle buckles;

top plates provided on front and rear sides of the plurality of stacked bodies;

the cotton insulation board of buffering bubble, the cotton insulation board of buffering bubble is established adjacent two between the lamination body.

According to the utility model discloses in the battery module, including a plurality of soft-packaged electrical core in every pile body, the anodal ear in each soft-packaged electrical core collects and forms positive connecting portion, and the negative pole ear collects and forms negative pole connecting portion. One stack is connected in series by the positive electrode connecting portion and the negative electrode connecting portion of the other stack adjacent thereto, or one stack is connected in series by the negative electrode connecting portion and the positive electrode connecting portion of the other stack adjacent thereto.

An intermediate support is provided between each of the two adjacent stacks on the left and right, and a terminal support is provided on the positive electrode connecting portion or the negative electrode connecting portion of the stack located at each of the two ends. The tail end support is provided with a first positioning structure, and two sides of the first positioning structure are respectively provided with a lateral guide groove, a lateral guide post, a lateral buckle and a support mounting hole, so that two laminated bodies which are adjacent side by side can be fixedly mounted through the lateral guide groove and the lateral guide post, and the lateral buckles on the two tail end supports which are adjacent side by side are mutually clamped to further improve the mounting stability; two adjacent stacked bodies are respectively provided with a middle bracket at the left and right sides between the two adjacent stacked bodies, and the two middle brackets are arranged in the up-down opposite directions, so that a front guide column on one middle bracket can be matched and installed with a front guide groove on the other middle bracket, and the two adjacent stacked bodies in one stacked body are fixed; two stacked sheet bodies adjacent side by side can be fixedly installed through a side guide groove and a side guide column, and the installation stability is further improved through mutual clamping of middle buckles on two middle brackets adjacent side by side; the lamination stack located at both sides of the battery module may be mounted with the side plates by screws using the bracket mounting holes and the side plate mounting holes. In addition, in the lamination production stage, can pile up a plurality of soft-packaged electrical core for the pile body after, install end support and middle support earlier, make the utmost point ear of each soft-packaged electrical core stretch out utmost point ear and stretch out the groove, then connect each utmost point ear. Therefore, the tail end support and the middle support can play a role in limiting and supporting the pole lug rolling tool when the pole lug is bent. Each side plate mounting hole on the side plate is respectively matched with the support mounting holes on the tail end support and the middle support, the side plates can be connected through screws, and each side plate clamping groove is respectively clamped with the middle buckle (or the side buckle) on the middle support, so that the mounting stability is further improved. In addition, through set up the cotton insulation board of buffering bubble between two adjacent lamination bodies, both can provide fixed pretightning force for the equipment of group battery initial stage, also can use the later stage at the group battery to absorb electric core bulging force.

From this, the soft packet of electric core of monomer among this battery module is parallelly connected, and the concatenation utmost point ear lug connection has realized the cascade between each pile body module. Thereby, having reduced the series-parallel connection copper bar and the outside mounting structure between the pile body, having reduced module annex in groups, reduce cost and weight improve space utilization, and then can hold more utmost point groups at the battery package, promote vehicle continuation of the journey mileage. Meanwhile, the use of external power connecting pieces between modules is reduced, bolt connection between modules is avoided, the connection stability and reliability of the power connecting pieces do not need to be considered, the connection internal resistance is reduced, and further the internal consumption of the power battery pack in use is reduced.

Optionally, in the stacked body, a structural adhesive layer is arranged between each soft-package battery cell.

Optionally, the thickness of the structural adhesive layer is 0.05-0.2 mm.

Optionally, the thickness of the structural adhesive layer is 0.1-0.18 mm.

Optionally, the end brackets and the middle bracket are made of insulating flame-retardant materials.

Optionally, the insulating flame-retardant material is at least one selected from PP, ABS, PC, PA and PA 66.

Optionally, a plurality of vertical connecting holes are distributed on two side faces of the side plate.

Optionally, the length of the battery module is not less than 600 mm.

Optionally, the positive electrode connection part and the negative electrode connection part are connected in series by laser welding, ultrasonic welding or riveting.

In another aspect of the present invention, the utility model provides a battery pack. According to the utility model discloses an embodiment, this battery package includes: the battery module of the above embodiment. Therefore, the battery pack has all the features and advantages described above for the battery module, and thus, the description thereof is omitted. In general, the battery pack has the advantages of lower cost and weight, higher space utilization rate and reliability and the like.

In another aspect of the present invention, a vehicle is provided. According to an embodiment of the present invention, the vehicle includes the battery module of the above embodiment or the battery pack of the above embodiment. Therefore, the vehicle has all the features and advantages described above for the battery module or the battery pack, and thus, the detailed description is omitted. In general, the vehicle has better reliability and endurance mileage.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a plurality of battery modules according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a lamination body in a battery module according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a lamination body in a battery module according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural diagram of a flexible package cell in a battery module according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the stack 110a of fig. 3 with the end brackets and the intermediate brackets mounted thereto;

FIG. 7 is an enlarged view of portion A of FIG. 6;

fig. 8 is a schematic structural view of the stack 110b of fig. 3 with the end brackets and the intermediate brackets mounted thereto;

FIG. 9 is an enlarged view of portion B of FIG. 8;

fig. 10 is a schematic view of the structure of the stack 110c of fig. 3 with the end frames and the intermediate frames mounted thereto;

fig. 11 is a schematic structural view of a side plate in a battery module according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a large battery module group consisting of two battery modules according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a top plate in a battery module according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a battery module provided with a buffer foam insulation plate according to an embodiment of the present invention;

FIG. 15 is an exploded view of FIG. 14;

fig. 16 is a schematic structural view of a buffer foam insulation plate in a battery module according to an embodiment of the present invention;

fig. 17 is a schematic structural view of another view angle of a battery module provided with a buffer foam insulation plate according to an embodiment of the present invention;

FIG. 18 is a sectional view taken along line B-B of FIG. 17;

FIG. 19 is a cross-sectional view taken along line C-C of FIG. 17;

fig. 20 is a schematic structural diagram of another view angle of a battery module provided with a buffering foam insulation board according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The term "adapted" can be understood in a broad sense or specifically refers to the arrangement position correspondence between two or more structural units, and can be connected or fixed with each other; for example, the adaptation between the guide groove and the guide post is to be understood as meaning that the two structural units are arranged in correspondence and can be mounted and fixed to one another.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In one aspect of the present invention, the utility model provides a battery module. Referring to fig. 1 to 20, according to an embodiment of the present invention, the battery module includes:

the laminated body 100, the laminated body 100 comprises a plurality of stacked bodies 110, and each stacked body 110 is formed by stacking a plurality of soft package core stacks 111; in one stacked body 110, the positive electrode tabs of the soft-package battery cells 111 are connected to form a positive electrode connecting part, the negative electrode tabs of the soft-package battery cells 111 are connected to form a negative electrode connecting part, and the stacked body 110 is connected in series through the positive electrode connecting part/negative electrode connecting part and the negative electrode connecting part/positive electrode connecting part of the other stacked body 110 adjacent to the stacked body;

a terminal holder 200, the terminal holder 200 being provided at the positive electrode connecting portion or the negative electrode connecting portion of the stacked body 110 located at both ends; the two ends of the tail end bracket 200 are respectively provided with a first positioning structure 210, and the middle part is provided with a tab extending groove 220; the first positioning structure 210 includes a side guide post 211, a side guide groove (not shown in the drawings), a bracket mounting hole 213, a side fastener 214, and a side fastener groove 215, wherein the side guide post 211 and the side guide groove 212 are respectively located at two sides of the first positioning structure 210 and are adapted to each other; the side fastener 214 and the side slot 215 are respectively located at two sides of the first positioning structure 210 and are adapted to each other;

the middle support 300 is arranged between two adjacent stacked bodies 110, and the middle supports 300 are arranged between the two adjacent stacked bodies 110 at the left and right sides respectively; one end of the middle bracket 300 is provided with a front guide post 310, the other end is provided with a second positioning structure 320, and the middle part is provided with a tab extending groove 330; the second positioning structure 320 comprises a front guide slot 321, a side guide post 322, a side guide slot (not shown in the drawings), a bracket mounting hole 324 and a middle buckle 325, wherein the side guide post 322 and the side guide slot 323 are respectively positioned at two sides of the second positioning structure and are matched with each other; the front guide groove 321 is matched with the front guide post 310;

the side plates 400 are arranged on the left side and the right side of the laminated body 100, a plurality of side plate mounting holes 430 and side plate clamping grooves 440 are arranged on the side plates 400, the side plate mounting holes 430, the support mounting holes 213 and the support mounting holes 324 are coaxially arranged, and the side plate clamping grooves 440 are matched with the middle clamping buckles 325;

top plates 500, the top plates 500 being provided on both front and rear sides of the plurality of stacked bodies 110;

the cotton insulation board 600 of buffering bubble, the cotton insulation board 600 of buffering bubble is established between two adjacent lamination body 100.

The battery module according to the embodiment of the present invention is further described in detail below.

The utility model discloses an among the battery module, adopt the soft packet of electricity core that the field is common. Referring to fig. 5, the pouch cell 111 includes a positive tab 111a and a negative tab 111 b. The outside of the soft package battery cell 111 is further wrapped with a packaging structure, such as an aluminum plastic film.

According to the utility model discloses a some embodiments, utmost point ear accessible ultrasonic welding, laser welding, argon arc welding etc. mode in each soft-packaged electrical core are connected and are formed positive pole connecting portion or negative pole connecting portion.

Referring to fig. 2, according to some embodiments of the present invention, the number of stacked bodies in one stacked body at least includes two stacked bodies, that is, two stacked bodies located at the end portions, and the number of stacked bodies located in the middle of the stacked body is not particularly limited, and may be set to 0, 1, 2, 3, etc. according to actual needs. For example, fig. 3 and 4 show laminates that include two stacks (110a and 110c) at the ends and one stack (110b) in the middle. Fig. 6 to 10 show in particular a schematic view of the structure of each stack in the stack body and the end supports and/or intermediate supports mounted thereon.

Referring to fig. 6 and 7, the end bracket 200 is provided at both ends thereof with a first positioning structure 210 and at the middle thereof with tab protruding grooves 220, respectively; the first positioning structure 210 comprises a lateral guide post 211, a lateral guide groove 212, a bracket mounting hole 213, a lateral buckle 214 and a lateral clamping groove 215, wherein the lateral guide post 211 and the lateral guide groove 212 are respectively positioned at two sides of the first positioning structure 210 and are mutually matched; the side latch 214 and the side slot 215 are respectively located at two sides of the first positioning structure 210 and are adapted to each other. Therefore, two laminated bodies adjacent side by side can be installed and fixed through the lateral guide groove and the lateral guide column. The bracket 213 is used to mount the side panel 400.

Additionally, according to some embodiments of the present invention, a middle mounting hole 216 may be further disposed on the end bracket 200, and the middle mounting hole may be used for mounting the top plate 500.

Referring to fig. 8 and 9, the middle bracket 300 is provided at one end with a front guide post 310 and at the other end with a second positioning structure 320, and at the middle with a tab protruding groove 330; the second positioning structure 320 comprises a front guide slot 321, a side guide post 322, a side guide slot 323, a bracket mounting hole 324 and a middle buckle 325, wherein the side guide post 322 and the side guide slot 323 are respectively positioned at two sides of the second positioning structure and are matched with each other; the front guide groove 321 is fitted to the front guide post 310. Thus, the front guide post on one middle bracket can be matched with the front guide groove on the other middle bracket, so that the two adjacent stacked bodies in one stacked body can be fixed. The bracket mounting hole 324 is used to mount the side plate 400. In addition, between two adjacent lamination bodies side by side, the position corresponding two middle buckles 325 can be mutually clamped, thereby further improving the stability of the structure.

In addition, according to some embodiments of the present invention, the front guiding pillar 310 and the side guiding pillar 322 on the middle bracket 300 can be also configured as a snap structure, so as to further improve the connection stability between the side guiding pillar 322 and the side guiding groove 323.

According to the utility model discloses a some embodiments, in every terminal support and middle support, the number that utmost point ear stretched out the groove is the same with the number of soft-packaged electric core in the pile body rather than the installation to guarantee that the utmost point ear of each soft-packaged electric core can all stretch out with the direction in the utmost point ear stretches out the groove, and the reconnection forms anodal connecting portion or negative pole connecting portion. In addition, the lug extending grooves with the same number as that of the soft-package battery cells are adopted, and welding slag can be prevented from flying into the battery cells in the welding process of each lug.

According to some embodiments of the present invention, the side plate may be made of metal or plastic, and the metal may be, for example, aluminum, copper, iron, an alloy thereof, or the like. The plastic is preferably a high-strength thermosetting plastic, such as SMC (sheet molding compound). When the side plate is made of metal, the side plate can be formed by adopting processes such as stamping and the like, and when the side plate is made of plastic, the side plate can be formed by adopting processes such as mould injection and the like.

The tail end support and the middle support can be used for protecting the tabs obtained by connecting the soft-packaged cells in the stacked body in parallel. According to some embodiments of the present invention, the end support and the middle support are made of insulating flame retardant material, such as PP, ABS, PC, PA66, etc.

Referring to fig. 11, according to some embodiments of the present invention, a plurality of vertical connecting holes 450 are distributed on both sides of the side plate. When a plurality of battery modules are stacked up and down to assemble a large-sized module, the plurality of battery modules may be connected by means of screws or bolts through the vertical connection holes 450. In addition, referring to fig. 12, two or more battery modules may be assembled side by side in a large module.

According to some embodiments of the present invention, the length of the battery module is not less than 600 mm.

According to some embodiments of the present invention, the positive electrode connecting portion and the negative electrode connecting portion are connected in series by laser welding, ultrasonic welding or riveting. The tabs of each stacked body in the stacked body are connected singly or compositely in the above mode.

Referring to fig. 13, according to some embodiments of the present invention, a plurality of top plate mounting holes 510 are formed on the top plate 500, and the top plate mounting holes 510 are matched with the middle mounting holes 216 of the end bracket 200 and are located at opposite positions. Thus, the top plate 500 and the end bracket 200 can be fixed to each other by screws through the top plate mounting hole 510 and the middle mounting hole 216.

Referring to fig. 14 to 20, a buffering foam insulation board 600 is disposed between two connected lamination bodies 100, so that the buffering foam insulation board can provide a fixed pre-tightening force for initial assembly of the battery pack and can absorb the expansion force of the battery cell in the later use stage of the battery pack.

According to the utility model discloses a some embodiments, the cotton insulating plate of above-mentioned multilayer buffering bubble thickness can be 5 ~ 20% of the soft packet of electricity core gross thickness of multilayer. Thus, it is possible to provide appropriate cushioning to the battery pack without excessively increasing the volume of the battery module.

The structure of the buffer foam insulating plate 600 is shown in fig. 16, the buffer foam insulating plate 600 is further provided with a plurality of avoiding holes 610, the positions of the avoiding holes 610 correspond to the positions of the middle buckles 325 of the bracket mounting holes 213 and the bracket mounting holes 324, the aperture is slightly larger than the above structure, and the installation between the two laminated plates is not affected. According to the utility model discloses a some embodiments, buffering bubble cotton insulation board 600 can adopt buffering insulating material such as PU, EVA.

According to some embodiments of the utility model discloses an among the battery module, between each soft packet of electricity core in the pile body, between lamination and the curb plate, between lamination and the roof, all can set up the structure glue film between buffering bubble cotton insulation board and the lamination, further adopt the structure to glue and bond, the thickness of structure glue film can be 0.05 ~ 0.2mm, for example 0.05mm, 0.1mm, 0.15mm, 0.2mm etc. This can further improve the structural stability between the members.

In summary, the foldable battery pack according to the embodiment of the present invention has at least one of the following advantages:

1. the battery modules are connected internally, and no conductive additional structures such as copper bars and aluminum bars exist, so that the cost is low and the connection is quick;

2. each soft-packaged battery cell in the stacked body is firstly connected in parallel, then the stacked bodies are connected in series to form a stacked body, and the stacked bodies are connected in series, so that the number of assembled parts is reduced;

3. the laminated bodies are connected through the side guide grooves and the side guide columns on the side surfaces of the tail end protective shell and the middle protective shell, and a plurality of laminated bodies can be assembled and installed conveniently and quickly according to the actual electric quantity requirement; meanwhile, the clamping connection is adopted, so that the connection stability is higher.

4. The multiple stacked bodies in the stacked body are connected through the front guide posts and the front guide posts of the middle protective shell, and the installation is quick and stable.

5. Compared with the traditional battery module in which each module is fixed and connected by four bolts, the battery module has the advantages that the bolts and the times for fixing each module are reduced, and the production efficiency is greatly improved;

6. compared with the traditional battery module which needs four bolts for fixing, the space for installation, module expansion and external connection does not need to be reserved among the laminated stacks of the same number of battery cores, and the volume utilization rate of the laminated stacks in a battery system can be greatly improved;

7. the laminated sheet body is bonded with the side plate and the top plate through the structural adhesive and fixed by the screws, so that the connection reliability is higher.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery module, comprising:

the laminated body comprises a plurality of stacked bodies, and each stacked body is formed by stacking a plurality of soft packaging cells; in one stacked body, positive lugs of the soft-package battery cells are connected to form a positive connecting part, negative lugs of the soft-package battery cells are connected to form a negative connecting part, and the stacked body is connected in series with the negative connecting part/positive connecting part of the other stacked body adjacent to the stacked body through the positive connecting part/negative connecting part;

top plates provided on front and rear sides of the plurality of stacked bodies;

2. The battery module of claim 1, wherein a structural adhesive layer is disposed between each of the laminate polymer cells in the stack.

3. The battery module according to claim 2, wherein the thickness of the structural adhesive layer is 0.05-0.2 mm.

4. The battery module of claim 1, wherein the end brackets and the intermediate brackets are of an insulating flame retardant material.

5. The battery module of claim 1, wherein a plurality of vertical connecting holes are distributed on both sides of the side plate.

6. The battery module according to claim 1, wherein the length of the battery module is not less than 600 mm.

7. A battery pack, comprising: the battery module according to any one of claims 1 to 6.

8. A vehicle, characterized by comprising: the battery module according to any one of claims 1 to 6 or the battery pack according to claim 7.