CN210706856U

CN210706856U - Battery module of battery pack

Info

Publication number: CN210706856U
Application number: CN201920991951.8U
Authority: CN
Inventors: 马腾; 曲凡多; 魏艳彬
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-06-09
Anticipated expiration: 2029-06-27

Abstract

The utility model provides a battery module of battery package, battery module of battery package includes: the multi-column electric core assembly, the middle connecting plate, the outer side corner protector, the pressing fixing piece and the upper cover. The middle connecting plate is arranged between two adjacent rows of the electric core assemblies; the outer side corner protector is arranged on the outer side of the outermost side electric core component; the pressing fixing piece is pressed on the outer side corner protector and connected with the lower shell of the battery pack; the upper cover is arranged at the upper end of the multi-column electric core assembly and is connected with at least one of the middle connecting plate and the outer side corner protector. From this, through setting up intermediate junction board, outside angle bead, compressing tightly mounting and upper cover, compare with the battery module among the prior art, the battery module of this application need not set up end plate and curb plate, can save the inner space of battery package to can promote the energy density of battery package, also can realize the lightweight setting of battery package, and, can also promote the assembly efficiency of battery module, thereby can promote battery module's production efficiency.

Description

Battery module of battery pack

Technical Field

The utility model relates to the technical field of vehicles, in particular to battery module of battery package.

Background

Among the correlation technique, battery module in the current battery package is provided with end plate and curb plate structure, and end plate and curb plate have increased battery module's weight, have also occupied the space in the battery package, are unfavorable for the lightweight design of battery package and energy density's promotion. In addition, the upper cover of the battery module is relatively complex in assembly process, so that the assembly time is long, and the assembly reliability of the upper cover is poor and the upper cover is easy to loosen.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a battery module of a battery pack to solve the problems of heavy weight and low energy density of the battery pack.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery module of a battery pack includes: the plurality of rows of electric core assemblies are arranged side by side; the middle connecting plate is arranged between two adjacent rows of the electric core assemblies and is used for compressing the two adjacent rows of the electric core assemblies at intervals; the outer side angle bead is arranged on the outer side of the outermost side of the electric core assembly and used for compressing the outermost side of the electric core assembly; the pressing fixing piece is pressed on the outer side corner protector and connected with the lower shell of the battery pack; the upper cover is arranged at the upper ends of the electric core assemblies in multiple rows and is connected with at least one of the middle connecting plate and the outer side corner protectors.

In some examples of the invention, the intermediate connection plate comprises: the middle lower connecting plate is arranged between two adjacent rows of the electric core assemblies and is used for supporting and spacing the two adjacent rows of the electric core assemblies; the middle upper connecting plate is arranged between the two adjacent electric core assemblies and is used for compressing the two adjacent electric core assemblies at intervals.

In some examples of the invention, the outside corner protector comprises: the outer upper part corner protector is arranged on the outer side of the outermost side of the electric core assembly and is positioned at the upper part of the outermost side of the electric core assembly, and the outer upper part corner protector is used for pressing the outermost side of the electric core assembly; module outside lower part angle bead, module outside lower part angle bead sets up in the outside and be located the outside the lower part of electricity core subassembly, module outside lower part angle bead is used for holding the outside the electricity core subassembly.

In some examples of the invention, the compression mount comprises: the second plate is connected between the first plate and the third plate, the first plate is pressed at the upper end of the outer upper corner protector, and the third plate is connected with the lower shell; the second plate is provided with second plate reinforcing ribs.

In some examples of the invention, the intermediate upper connecting plate comprises: the first pressing plate and the first spacing plate are arranged below the first pressing plate and are positioned in the middle of the first pressing plate.

In some examples of the invention, the intermediate lower connecting plate comprises: the second partition plate is arranged above the second pressing plate and is positioned in the middle of the second pressing plate.

In some examples of the invention, the intermediate upper connecting plate and at least one of the outer upper corner protectors are provided with a first mounting portion, the upper cover being provided with a second mounting portion adapted to be engaged with the first mounting portion.

In some examples of the present invention, a clamping structure is provided on a peripheral wall of the first mounting portion; the upper surface of the first mounting part of the middle lower connecting plate is provided with a binding band mounting groove; the upper surface of first installation department of outside upper portion angle bead has and is used for the backstop the spacing muscle of first board.

In some examples of the present invention, the cell assembly includes: the battery comprises an elastic pad and a plurality of battery cells, wherein the battery cells are sequentially stacked together, and the elastic pad is arranged between the adjacent battery cells; a gasket and a protection portion that is provided outside the outermost battery cell in a stacking direction of the plurality of battery cells; the gasket is arranged between the protection part and the battery cell on the outermost side.

In some examples of the invention, the outer surface of the protection part is provided with a positioning hole and a guide surface.

Compared with the prior art, battery pack's battery module have following advantage:

according to the utility model discloses a battery pack's battery module is through setting up intermediate junction board, outside angle bead, compressing tightly mounting and upper cover, compares with the battery module among the prior art, and the battery module of this application need not set up end plate and curb plate, can save the inner space of battery pack to can promote the energy density of battery pack, also can realize the lightweight setting of battery pack, and, can also promote battery module's assembly efficiency, thereby can promote battery module's production efficiency.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view illustrating an assembly of a battery module and a lower case of a battery pack according to an embodiment of the present invention;

fig. 2 is an exploded view of a battery module and a lower case of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic view of a lower case of a battery pack according to an embodiment of the present invention;

fig. 4 is a schematic view of a mounting bracket of a battery pack according to an embodiment of the present invention;

fig. 5 is an assembly diagram of a mounting bracket and an upper battery module of a battery pack according to an embodiment of the present invention;

fig. 6 is a schematic view of a lower layer battery module of a battery pack according to an embodiment of the present invention;

fig. 7 is an exploded view of a lower layer battery module of a battery pack according to an embodiment of the present invention;

fig. 8 is an exploded view of a lower battery module and a lower case of another embodiment of a battery pack according to an embodiment of the present invention;

fig. 9 is a schematic view of the lower battery module of fig. 8;

fig. 10 is a schematic view of an outer upper corner protector of a battery pack according to an embodiment of the present invention;

fig. 11 is a schematic view of a middle upper connecting plate of a battery pack according to an embodiment of the present invention;

fig. 12 is an exploded view of the electric core assembly of the battery pack according to the embodiment of the present invention;

fig. 13 is a schematic view of an upper battery module of a battery pack according to an embodiment of the present invention;

fig. 14 is a schematic view of an upper battery module according to another embodiment of the present invention;

fig. 15 is a schematic view illustrating an assembly of an upper battery module and a mounting bracket according to another embodiment of the present invention;

fig. 16 is a schematic view of a first clamp clamping a core assembly according to an embodiment of the present invention;

fig. 17 is a schematic view illustrating the first clamp clamping the electric core assembly into the second clamp according to the embodiment of the present invention;

fig. 18 is a schematic view of the arrangement of the electric core assemblies according to the embodiment of the present invention;

fig. 19 is a schematic view illustrating a first clamping device for clamping a lower battery module into a lower housing according to an embodiment of the present invention;

fig. 20 is a schematic view of an outer lower corner bead of a lower battery module according to an embodiment of the present invention;

fig. 21 is a flowchart of a method for mounting a battery module in a battery pack according to an embodiment of the present invention.

Description of reference numerals:

a lower case 10;

a body 1; a first side sill 11; a base plate 12; a second side beam 13;

a module fixing structure 2; a middle pressing part 21; a side pressing part 22; a module clamping space 23; upper-layer battery module fixing holes 24; a wire harness passage 25; a first side pressing portion 26; a second side pressing portion 27; a reinforcing structure 28;

a lower-layer battery module 3;

an upper layer battery module 4; an upper-layer battery module middle lower connection plate 41; an upper-middle battery module connecting plate 42; an upper outer corner 43 of the upper battery module; an upper-layer battery module outer lower bead 44; an upper battery module cover 45; a middle end plate 46; a third mounting portion 47; a fourth mounting portion 48; a second pressing member 49; an upper battery module strap mounting groove 491; an intermediate bushing 492;

a bandage fixing plate 5;

a battery module 20;

an electric core assembly 201; an elastic pad 2011; a battery cell 2012; a shim 2013; a protection portion 2014; positioning holes 2015; a guide surface 2016;

an outer upper corner bead 202; a first corner bead 2021; a second corner bead 2022; a first mounting portion 2023; a clamping structure 2024; a first snap-fit structure 2025; a second snap-fit structure 2026; a snap groove 2027; a strap mounting slot 2028; a limiting rib 2029;

an outer lower corner bead 203; a third corner bead 2031; a fourth bead 2032; a mounting plate 2033; a reinforcing rib 2034;

an upper cover 204; a second mounting portion 2041; an upper cover body 2042; a second mounting assembly 2043; compressing the turnup 2044; a notch 2045;

an intermediate upper connecting plate 205; a first compression plate 2051; a first partition plate 2052;

an intermediate lower connecting plate 206; a second compression plate 2061; second spacer plates 2062;

a mounting bracket 30;

an accommodating groove 301; a support plate 3011; a side plate 3012; bolt connection holes 3013; heating the film outlet gap 3014; side press connecting hole 3015;

an end fixing plate 302; strap attachment holes 3021; a first avoidance groove 3022; a second avoidance groove 3023;

a housing chamber 303;

the lower corner guard 501 outside the module;

the pressing fixture 60; a first plate 601; a second plate 602; a third plate 603; a second plate reinforcing rib 604;

a first pressing member 701; an accommodating space 702;

a first clamp 80; a second clamp 801.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 20, a battery module 20 of a battery pack according to an embodiment of the present invention includes: multiple rows of electric core assemblies 201, intermediate connecting plates, outside corner protectors and upper covers 204. Multiseriate electric core subassembly 201 arranges side by side, and intermediate junction plate sets up between adjacent two electric core subassembly 201, and intermediate junction plate is used for compressing tightly and the adjacent two electric core subassembly 201 of interval, and it needs to explain, and intermediate junction plate can bond together with adjacent two electric core subassembly 201, sets up like this and can connect two or multiseriate electric core subassembly 201 as a whole, can realize that a battery module 20 includes multiseriate electric core subassembly 201's work purpose.

The outside angle bead sets up in the outside of outside core subassembly 201, and the outside angle bead is used for compressing tightly the core subassembly 201 in the outside, and the outside angle bead is connected with the lower casing 10 of battery package moreover. Wherein, the back is in the same place in multiseriate electric core subassembly 201, intermediate junction board and outside angle bead assembly, presss from both sides battery module 20 in the lower casing 10 of battery package, then links together outside angle bead and the lower casing 10 of battery package, sets up like this and can fix battery module 20 on lower casing 10 to can realize the work purpose of fixed battery module 20. And, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20, can reduce battery module 20's manufacturing cost and weight, thereby can realize battery module 20's lightweight design, and simultaneously, also can save the inner space of battery package, thereby can promote battery package's energy density, in addition, also can simplify battery module 20's structure, can be convenient for battery module 20's production and manufacturing, thereby can promote battery module 20's assembly efficiency, and then can promote battery module 20's production efficiency.

In addition, compared to the battery module in the related art, the arrangement of the end plates and the side plates 3012 is omitted, so that the conventional welding process of the end plates and the side plates 3012 can be reduced, and the amount of structural adhesive used can also be reduced. Meanwhile, a large area of the surface of the battery cell 2012 can be exposed, so that heating or cooling of the battery cell 2012 can be facilitated.

The upper cover 204 is disposed at the upper end of the multiple rows of the electric core assembly 201 and connected to at least one of the intermediate connection plate and the outer corner protector, and it should be explained that the upper cover 204 is disposed above the multiple rows of the electric core assembly 201, and the upper cover 204 may be connected to only the intermediate connection plate, only the outer corner protector, and both the intermediate connection plate and the outer corner protector. Wherein, after battery module 20 assembly, upper cover 204 links together with intermediate junction board and/or outside angle bead, can assemble upper cover 204 reliably on battery module 20, can prevent that upper cover 204 from breaking away from battery module 20, also can avoid upper cover 204 not hard up, and, upper cover 204 can play the guard action to the spare part between electric core subassembly 201 and upper cover 204, can avoid the spare part between electric core subassembly 201 and the upper cover 204 to receive external environment and damage, thereby can guarantee battery module 20's operational reliability.

From this, through multiseriate electric core subassembly 201, intermediate junction board, outside angle bead and upper cover 204 cooperation, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can save the inner space of battery package to can promote the energy density of battery package, also can realize the lightweight setting of battery package, and, can also promote battery module 20's assembly efficiency, thereby can promote battery module 20's production efficiency.

In some embodiments of the present invention, as shown in fig. 7, the intermediate connection plate may include: an intermediate lower connecting plate 206 and an intermediate upper connecting plate 205. The middle lower connecting plate 206 is disposed between two adjacent columns of the electric core assemblies 201, and the middle lower connecting plate 206 is used for supporting and spacing two adjacent columns of the electric core assemblies 201. It should be noted that the middle lower connecting plate 206 can be adhered to two adjacent rows of cell assemblies 201, so as to ensure the reliable connection between the middle lower connecting plate 206 and the cell assemblies 201, and also to restrain the cell assemblies 201.

Middle upper portion connecting plate 205 sets up between two adjacent electric core subassemblies 201, and middle upper portion connecting plate 205 is used for compressing tightly and two adjacent electric core subassemblies 201 in interval, and wherein, middle upper portion connecting plate 205 can bond together with two adjacent electric core subassemblies 201 to can ensure that middle upper portion connecting plate 205 is reliably connected with electric core subassembly 201, also can retrain electric core subassembly 201 better.

In some embodiments of the present invention, as shown in fig. 7, the outside corner protector may include: an outboard upper corner bead 202 and an outboard lower corner bead 203. The outer upper corner bead 202 may be disposed outside the outermost core assembly 201 and on the outermost core assembly 201, and the outer upper corner bead 202 is used to press the outermost core assembly 201. The outer lower corner protectors 203 are arranged on the outer sides of the outermost cell assemblies 201 and located at the lower parts of the outermost cell assemblies 201, and the outer lower corner protectors 203 are used for supporting the outermost cell assemblies 201 and connected with the lower shell 10 of the battery pack.

As shown in fig. 1 to 20, the battery module 20 may be an upper battery module 4 in a battery pack, or may be a lower battery module 3 in a battery pack, and the outer corner protector of the battery module 20 includes: an outboard upper corner bead 202 and an outboard lower corner bead 203. The multiple columns of electric core assemblies 201 are arranged side by side, the outer upper corner protectors 202 are arranged on the outer sides of the outermost electric core assemblies 201, the outer upper corner protectors 202 are located on the upper portions of the outermost electric core assemblies 201, and the outer upper corner protectors 202 are used for pressing the outermost electric core assemblies 201. It should be noted that the outer upper corner bead 202 may be disposed at a shoulder position of the core assembly 201. The outer lower corner bead 203 is disposed at the outer side of the outermost core assembly 201, and the outer lower corner bead 203 is located at the lower part of the outermost core assembly 201, and the outer lower corner bead 203 is used for holding the outermost core assembly 201 and is connected with the lower case 10 of the battery pack, it should be explained that the outer lower corner bead 203 and the outer upper corner bead 202 together press the core assembly 201, and the outer lower corner bead 203 and the outer upper corner bead 202 can be adhered with the core assembly 201.

After the electric core assembly 201, the outer upper corner bead 202 and the outer lower corner bead 203 are assembled together, the battery module 20 is clamped in the lower shell 10 of the battery pack, and then the outer lower corner bead 203 is connected with the lower shell 10 of the battery pack, so that the battery module 20 can be fixed on the lower shell 10, and the work purpose of fixing the battery module 20 can be achieved. And, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20, can reduce battery module 20's manufacturing cost and weight, thereby can realize battery module 20's lightweight design, and simultaneously, also can save the inner space of battery package, thereby can promote battery package's energy density, in addition, also can simplify battery module 20's structure, can be convenient for battery module 20's production and manufacturing, thereby can promote battery module 20's assembly efficiency, and then can promote battery module 20's production efficiency.

In some embodiments of the present invention, as shown in fig. 10, the outer upper corner bead 202 may include: the first corner bead 2021 and the second corner bead 2022, the second corner bead 2022 can be disposed on the first corner bead 2021, and the second corner bead 2022 is located under the first corner bead 2021, the first corner bead 2021 is suitable for abutting against the upper surface of the outermost electric core assembly 201, and the second corner bead 2022 is suitable for abutting against the side surface of the outermost electric core assembly 201. Wherein, first angle bead 2021 and the last surface bonding of electric core subassembly 201 are in the same place, and second angle bead 2022 and the side surface bonding of electric core subassembly 201 are in the same place, so set up and to compress tightly electric core subassembly 201, can make electric core subassembly 201's overall structure compacter to, first angle bead 2021 and second angle bead 2022 can play the guard action to electric core subassembly 201, can prevent that electric core subassembly 201 from receiving external spare part and damaging.

In some embodiments of the present invention, as shown in fig. 20, the outer lower corner bead 203 may include: a third corner bead 2031 and a fourth corner bead 2032, the fourth corner bead 2032 can be disposed on the third corner bead 2031, and the fourth corner bead 2032 is located above the third corner bead 2031, the third corner bead 2031 is suitable for abutting against the lower surface of the outermost electric core assembly 201, and the fourth corner bead 2032 is suitable for abutting against the side surface of the outermost electric core assembly 201. Wherein, the third angle bead 2031 can be in the same place with the lower surface bonding of electric core subassembly 201, the fourth angle bead 2032 can be in the same place with the side surface bonding of electric core subassembly 201, cooperate through outside upper portion angle bead 202 and outside lower part angle bead 203, can compress tightly electric core subassembly 201, can make electric core subassembly 201's overall structure compacter, and, third angle bead 2031 and fourth angle bead 2032 can play the guard action to electric core subassembly 201, can prevent that electric core subassembly 201 from receiving external spare part and damaging.

In some embodiments of the present invention, as shown in fig. 20, the outer lower corner protector 203 may further include: a mounting plate 2033, the mounting plate 2033 may be provided on an outer surface of the fourth bead 2032, and the mounting plate 2033 is adapted to be coupled with the lower case 10 of the battery pack. Wherein, after the battery module 20 is placed in the lower case 10, the mounting plate 2033 may be assembled with the lower case 10 by bolts, so that the battery module 20 may be stably assembled on the lower case 10, and the position stability of the battery module 20 may be ensured.

In some embodiments of the present invention, as shown in fig. 20, the outer surfaces of the second corner bead 2022 and the fourth corner bead 2032 may be provided with a reinforcing rib 2034, so that the structural strength of the second corner bead 2022 and the fourth corner bead 2032 can be improved, and the deformation of the second corner bead 2022 and the fourth corner bead 2032 can be avoided, so as to make the outer upper corner bead 202 and the outer lower corner bead 203 better fix and protect the electric core assembly 201.

In some embodiments of the present invention, the first corner protector 2021, the second corner protector 2022, the third corner protector 2031, and the fourth corner protector 2032 may be configured as a flat plate, and such an arrangement enables the surfaces of the first corner protector 2021, the second corner protector 2022, the third corner protector 2031, and the fourth corner protector 2032 to be more flat, so that the first corner protector 2021, the second corner protector 2022, the third corner protector 2031, and the fourth corner protector 2032 can be better assembled with the power core assembly 201.

In some embodiments of the present invention, as shown in fig. 11, the middle upper connecting plate 205 may include: a first pressing plate 2051 and a first partition plate 2052, the first partition plate 2052 may be disposed below the first pressing plate 2051, and the first partition plate 2052 may be located at a middle position of the first pressing plate 2051. Wherein, first spacer plate 2052 is located between two adjacent columns of battery core subassemblies 201, and first spacer plate 2052 can guarantee to have the clearance between two adjacent columns of battery core subassemblies 201 to, first pressure strip 2051 presses in the upper end of two adjacent columns of battery core subassemblies 201, can make battery core subassembly 201's structure compacter.

In some embodiments of the present invention, as shown in fig. 7, the middle lower connecting plate 206 may include: a second pressing plate 2061 and a second spacer plate 2062, the second spacer plate 2062 may be disposed above the second pressing plate 2061, and the second spacer plate 2062 is located at a middle position of the second pressing plate 2061. Wherein, the second spacer plate 2062 is located between two adjacent electric core assemblies 201, the second spacer plate 2062 can guarantee to have the clearance between two adjacent electric core assemblies 201, and, the second pressure strip 2061 holds in the palm at two adjacent lower extremes of electric core assemblies 201, through the cooperation of first pressure strip 2051 and second pressure strip 2061, can make electric core assembly 201's structure compacter, and, the bottom surface of second pressure strip 2061 is the plane, the bottom surface of second pressure strip 2061 contacts with lower casing 10, can prevent the surface of casing 10 direct wear electric core assembly 201 down, thereby can prolong electric core assembly 201's life.

In some embodiments of the present invention, at least one of the middle upper connecting plate 205 and the outer upper corner protectors 202 is provided with a first mounting portion 2023. The first attachment portion 2023 may be provided only on the intermediate upper connection plate 205, only on the outer upper corner protector 202, or both the intermediate upper connection plate 205 and the outer upper corner protector 202.

As shown in fig. 1-7, the upper cover 204 may be provided with a second mounting portion 2041 adapted to snap fit with the first mounting portion 2023. According to the utility model discloses battery module 20's upper cover 204 includes: the upper cover body 2042 and the upper cover body 2042 are disposed at the upper end of the battery cell assembly 201 in the battery module 20, and it can also be understood that the upper cover body 2042 is disposed above the battery cell assembly 201, and the upper cover body 2042 is provided with a second mounting portion 2041 adapted to be connected to the first mounting portion 2023, and it should be explained that the first mounting portion 2023 and the second mounting portion 2041 may be fastened together.

Wherein, after the assembly of battery module 20 is accomplished, first installation department 2023 is in the same place with second installation department 2041 joint, can assemble upper cover 204 reliably on battery module 20, can prevent that upper cover 204 from breaking away from battery module 20, also can avoid upper cover 204 not hard up, and, upper cover 204 can play the guard action to the spare part between electric core subassembly 201 and the upper cover 204, can avoid the spare part between electric core subassembly 201 and the upper cover 204 to receive external environment and damage, thereby can guarantee battery module 20's operational reliability. Meanwhile, the first mounting part 2023 is clamped with the second mounting part 2041, so that the upper cover 204 can be quickly assembled on the battery module 20, the assembling time of the upper cover 204 can be saved, and the assembling efficiency of the battery module 20 can be improved.

In some embodiments of the present invention, one of the first mounting portion 2023 and the second mounting portion 2041 is configured as a boss, and the other of the first mounting portion 2023 and the second mounting portion 2041 is configured as a mounting hole, and the boss can pass through the mounting hole. It should be noted that the second mounting portion 2041 may be configured as one of a boss and a mounting hole, if the first mounting portion 2043 is configured as a boss, the second mounting portion 2041 is configured as a mounting hole, and if the second mounting portion 2041 is configured as a boss, the first mounting portion 2023 is configured as a mounting hole, so that the work purpose of clamping the first mounting portion 2023 and the second mounting portion 2041 can be achieved, and the structure of the first mounting portion 2023 and the second mounting portion 2041 can be simplified, thereby facilitating the production and manufacture of the first mounting portion 2023 and the second mounting portion 2041. However, the present invention is not limited thereto, the first mounting portion 2023 and the second mounting portion 2041 may be configured to have the same function as the boss and the mounting hole, as long as the first mounting portion 2023 and the second mounting portion 2041 are connected together.

In some embodiments of the present invention, the second installation portion 2041 may be set to be a plurality of, wherein, the first installation portion 2023 may also be set to be a plurality of, a plurality of second installation portions 2041 and a plurality of first installation portions 2023 one-to-one, and are connected with a plurality of first installation portions 2023 through a plurality of second installation portions 2041, so as to assemble the upper cover 204 on the battery module 20 more firmly, and prevent the upper cover 204 from falling off from the battery module 20, thereby improving the position stability of the upper cover 204.

In some embodiments of the present invention, the plurality of second installation portions 2041 can be divided into a plurality of sets of second installation portion 2043, it should be noted that each set of second installation portion 2043 can form a line, and the plurality of sets of second installation portion 2043 are parallel to each other, so as to avoid the interference between the second installation portions 2041 of the two adjacent sets of second installation portion 2043, thereby ensuring the reliability of the assembly of the second installation portions 2041 and the first installation portion 2023.

In some embodiments of the present invention, the adjacent two sets of second installation component 2043 are spaced apart from each other, so that the second installation portion 2041 of the adjacent two sets of second installation component 2043 can be further prevented from interfering with each other, and the reliability of the assembly of the second installation portion 2041 and the first installation portion 2023 can be further ensured.

In some embodiments of the present invention, each set of second installation components 2043 is disposed along the length direction of the electric core assembly 201 of the battery module 20, that is, the disposition direction of the second installation components 2043 can be the length direction of the electric core assembly 201, i.e., the left and right directions in fig. 7, wherein, since the middle upper connecting plate 205 and the outer upper corner protectors 202 are disposed between two adjacent columns of the electric core assembly 201, the extending direction of the middle upper connecting plate 205 and the outer upper corner protectors 202 is the length direction of the electric core assembly 201, such disposition enables the second installation components 2043 to be the same as the disposition direction of the middle upper connecting plate 205 and the outer upper corner protectors 202, and it can be ensured that the second installation components 2041 and the first installation components 2023 can be assembled together.

In some embodiments of the present invention, the second mounting portion 2041 may be provided as a mounting hole.

In some embodiments of the utility model, as shown in fig. 7, in the circumferential direction of upper cover body 2042, the edge of upper cover body 2042 can be provided with and compress tightly turn-ups 2044, after the assembly of battery module 20 is accomplished, compress tightly outside upper portion angle bead 202 that turn-ups 2044 can compress tightly battery module 20, thereby can prevent that outside upper portion angle bead 202 from separating with electric core subassembly 201, and then can guarantee the reliability of electric core subassembly 201 with the assembly of outside upper portion angle bead 202, and, compress tightly outside upper portion angle bead 202 through compressing tightly turn-ups 2044, can make battery module 20's structure compacter, thereby can avoid electric core subassembly 201 to become flexible.

In some embodiments of the utility model, as shown in fig. 7, can be provided with breach 2045 on compressing tightly turn-ups 2044, wherein, after electric core subassembly 201 assembles on the lower casing 10 of battery package, connect through the conducting bar between two adjacent electric core subassemblies 201, through setting up breach 2045, breach 2045 can dodge out the conducting bar to can realize the work purpose of electricity connection between two adjacent electric core subassemblies 201.

In some embodiments of the present invention, as shown in fig. 10, a clamping structure 2024 may be disposed on the peripheral wall of the first mounting portion 2023, and the clamping structure 2024 may include: the first clamping structure 2025 and the second clamping structure 2026 are disposed opposite to each other and spaced apart from each other, so that a clamping groove 2027 can be formed between the first clamping structure 2025 and the second clamping structure 2026, when the first mounting portion 2023 is disposed as a boss and the second mounting portion 2041 is disposed as a mounting hole, an edge of the mounting hole is clamped in the clamping groove 2027, so that the first mounting portion 2023 and the second mounting portion 2041 can be stably assembled together, and the upper cover 204 can be prevented from being loosened.

In some embodiments of the present invention, as shown in fig. 10 and 11, the upper surface of the first mounting portion 2023 has a strap mounting groove 2028. It should be noted that, when the battery module 20 is the lower battery module 3, after the lower battery module 3 is clamped in the lower case 10, the lower battery module 3 is pressed in the lower case 10 by using a binding band, wherein the binding band can be installed in the binding band installation groove 2028, and the binding band installation groove 2028 can limit the position of the binding band, thereby improving the position stability of the binding band, preventing the position of the binding band from moving, and further pressing the battery module 20 by the binding band.

In some embodiments of the present invention, as shown in fig. 12, each row of the cell assembly 201 may include: elastic pad 2011 and a plurality of electric core 2012, a plurality of electric core 2012 stack together in proper order, elastic pad 2011 can set up between adjacent electric core 2012, elastic pad 2011 can bond together with electric core 2012 through gluing, elastic pad 2011 is preferably the aerogel felt, it can keep two adjacent electric core 2012 to have the interval to set up like this, elastic pad 2011 has the effect of absorbing electric core 2012 and bulging, and, elastic pad 2011 has good heat-proof quality, be used for obstructing the heat that single electric core 2012 produced, can avoid on the electric core 2012 heat transfer to adjacent electric core 2012.

In some embodiments of the present invention, as shown in fig. 12, the electric core assembly 201 may further include: gasket 2013 and protection 2014, in the stacking direction of a plurality of cells 2012, protection 2014 can be arranged outside the outermost cells 2012, protection 2014 is preferably made of injection molding material, and protection 2014 is used for resisting end friction of the electric core assembly 201 in the assembling process and can protect the end of the electric core assembly 201. A gasket 2013 may be disposed between the protection portion 2014 and the outermost cell 2012, the gasket 2013 is preferably of a rubber structure, the thickness of the gasket 2013 is 2-8mm, and two sides of the gasket 2013 are connected with the cell 2012 and the protection portion 2014 through glue.

The surface of protection portion 2014 can be provided with locating hole 2015 and guide surface 2016, wherein, when installation battery module 20, can use anchor clamps to press from both sides battery module 20 and put into down on casing 10 with battery module 20, anchor clamps can be in the same place with locating hole 2015 cooperation after through guide surface 2016 to can be convenient for anchor clamps and the location of protection portion 2014, and then can make things convenient for anchor clamps to press from both sides battery module 20.

In some embodiments of the present invention, the third angle bead 2031 has the same height as the second compression plate 2061 in the up-down direction of the battery module 20, and after the battery module 20 is assembled to the lower case 10, the battery module 20 can be smoothly mounted on the lower case 10 by such an arrangement, and the inclination of the battery module 20 can be prevented.

Specifically, after the multiple rows of the cell assemblies 201 are assembled with the intermediate connecting plate and the outer side corner protectors together, one battery module 20 is formed, the battery modules 20 are assembled and then are connected with the bus bar and the sampling wire harness in a centralized mode, and then the upper cover 204 is covered, so that the assembly work of the battery module 20 is completed. Moreover, the design scheme of the application can also be used for forming the battery module 20 by using the single-row cell assembly 201, and the battery module can be assembled by directly adopting the outer-side corner protectors after the plurality of cells 2012 are stacked.

According to the utility model discloses battery module 20, including the upper cover 204 of above-mentioned embodiment, upper cover 204 sets up and installs on battery module 20, and this upper cover 204 can assemble upper cover 204 on battery module 20 fast, can save the assemble duration of upper cover 204 to can promote battery module 20's assembly efficiency, and, also can assemble upper cover 204 on battery module 20 firmly, can avoid upper cover 204 not hard up.

As shown in fig. 1 to 20, a battery module 20 of a battery pack according to an embodiment of the present invention includes: multiple rows of electric core assemblies 201, intermediate connecting plates, outer side protective corners, a pressing fixing piece 60 and an upper cover 204. Multiseriate electric core subassembly 201 arranges side by side, and intermediate junction plate sets up between adjacent two electric core subassembly 201, and intermediate junction plate is used for compressing tightly and the adjacent two electric core subassembly 201 of interval, and it needs to explain, and intermediate junction plate can bond together with adjacent two electric core subassembly 201, sets up like this and can connect two or multiseriate electric core subassembly 201 as a whole, can realize that a battery module 20 includes multiseriate electric core subassembly 201's work purpose.

The outside angle bead sets up in the outside of outside electric core subassembly 201, and the outside angle bead is used for compressing tightly electric core subassembly 201 in the outside. Wherein, multiseriate electric core subassembly 201, intermediate junction board, outside angle bead and compress tightly the mounting 60 assembly back together, press from both sides battery module 20 and establish in the lower casing 10 of battery package, then will compress tightly the mounting 60 and link together with the lower casing 10 of battery package, set up like this and can fix battery module 20 on lower casing 10 to can realize the work purpose of fixed battery module 20. And, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20, can reduce battery module 20's manufacturing cost and weight, thereby can realize battery module 20's lightweight design, and simultaneously, also can save the inner space of battery package, thereby can promote battery package's energy density, in addition, also can simplify battery module 20's structure, can be convenient for battery module 20's production and manufacturing, thereby can promote battery module 20's assembly efficiency, and then can promote battery module 20's production efficiency.

From this, through setting up intermediate junction board, outside angle bead, compressing tightly mounting 60 and upper cover 204, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can save the inner space of battery package to can promote the energy density of battery package, also can realize the lightweight setting of battery package, and, can also promote battery module 20's assembly efficiency, thereby can promote battery module 20's production efficiency.

In some embodiments of the present invention, as shown in fig. 8 and 9, the outside corner protector may include: an outboard upper corner bead 202 and a module outboard lower corner bead 501. The outer upper corner bead 202 may be disposed outside the outermost core assembly 201 and on the outermost core assembly 201, and the outer upper corner bead 202 is used to press the outermost core assembly 201. The module outer lower corner protector 501 is disposed outside the outermost cell assembly 201 and located below the outermost cell assembly 201, and the module outer lower corner protector 501 is used for supporting the outermost cell assembly 201.

The battery module 20 may be an upper battery module 4 in a battery pack, or may be a lower battery module 3 in a battery pack, and the outer corner protector of the battery module 20 includes: an outboard upper corner bead 202 and a module outboard lower corner bead 501. The multiple columns of electric core assemblies 201 are arranged side by side, the outer upper corner protectors 202 are arranged on the outer sides of the outermost electric core assemblies 201, the outer upper corner protectors 202 are located on the upper portions of the outermost electric core assemblies 201, and the outer upper corner protectors 202 are used for pressing the outermost electric core assemblies 201. It should be noted that the outer upper corner bead 202 may be disposed at a shoulder position of the core assembly 201. Module outside lower part angle bead 501 sets up in the outside of outside core subassembly 201 to module outside lower part angle bead 501 is located the lower part of outside core subassembly 201, and module outside lower part angle bead 501 is used for holding the core subassembly 201 in the outside, and it should be explained that module outside lower part angle bead 501 and outside upper part angle bead 202 compress tightly core subassembly 201 jointly, and module outside lower part angle bead 501 and outside upper part angle bead 202 all can be in the same place with core subassembly 201 bonding.

Wherein, after the multi-column battery pack assembly 201, the outer upper corner bead 202, the module outer lower corner bead 501 and the pressing fixing member 60 are assembled together, the battery module 20 is clamped in the lower shell 10 of the battery pack, and then the pressing fixing member 60 is connected with the lower shell 10 of the battery pack, so that the battery module 20 can be fixed on the lower shell 10, and the work purpose of fixing the battery module 20 can be realized. And, compare with the battery module among the prior art, battery module 20 of this application need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20, can reduce battery module 20's manufacturing cost and weight, thereby can realize battery module 20's lightweight design, and simultaneously, also can save the inner space of battery package, thereby can promote battery package's energy density, in addition, also can simplify battery module 20's structure, can be convenient for battery module 20's production and manufacturing, thereby can promote battery module 20's assembly efficiency, and then can promote battery module 20's production efficiency.

In some embodiments of the present invention, as shown in fig. 20, the module outside lower corner protectors 501 may include: a third corner bead 2031 and a fourth corner bead 2032, the fourth corner bead 2032 can be disposed on the third corner bead 2031, and the fourth corner bead 2032 is located above the third corner bead 2031, the third corner bead 2031 is suitable for abutting against the lower surface of the outermost electric core assembly 201, and the fourth corner bead 2032 is suitable for abutting against the side surface of the outermost electric core assembly 201. Wherein, the third angle bead 2031 can be in the same place with the lower surface bonding of electric core subassembly 201, the fourth angle bead 2032 can be in the same place with the side surface bonding of electric core subassembly 201, cooperate through outside upper portion angle bead 202 and outside lower part angle bead 203, can compress tightly electric core subassembly 201, can make electric core subassembly 201's overall structure compacter, and, third angle bead 2031 and fourth angle bead 2032 can play the guard action to electric core subassembly 201, can prevent that electric core subassembly 201 from receiving external spare part and damaging.

In some embodiments of the present invention, as shown in fig. 8 and 9, the pressing fixture 60 may include: a first plate 601, a second plate 602, and a third plate 603, the second plate 602 being connected between the first plate 601 and the third plate 603, the first plate 601 being pressed against the upper end of the outer upper corner 202, and the third plate 603 being connected to the lower housing 10. Wherein, compress tightly the mounting 60 and can set up to the panel beating material, set up like this and can guarantee to compress tightly the structural strength of mounting 60, can guarantee to compress tightly the compression strength of mounting 60 to can make and compress tightly mounting 60 and compress tightly battery module 20 on lower casing 10 firmly. However, the present invention is not limited thereto, and the pressing fixture 60 may be configured in other structures as long as the battery module 20 can be pressed in the lower case 10.

In some embodiments of the present invention, as shown in fig. 9, the second plate 602 may be provided with a second plate reinforcing rib 604, the second plate reinforcing rib 604 has an effect of enhancing the structural strength, so the structural strength of the pressing fixing member 60 can be improved, the pressing strength of the pressing fixing member 60 can be further ensured, and thus the pressing fixing member 60 can be further made to stably press the battery module 20 on the lower case 10.

As shown in fig. 7, the upper cover 204 may be provided with a second mounting portion 2041 adapted to snap-fit with the first mounting portion 2023. According to the utility model discloses battery module 20's upper cover 204 includes: the upper cover body 2042 and the upper cover body 2042 are disposed at the upper end of the battery cell assembly 201 in the battery module 20, and it can also be understood that the upper cover body 2042 is disposed above the battery cell assembly 201, and the upper cover body 2042 is provided with a second mounting portion 2041 adapted to be connected to the first mounting portion 2023, and it should be explained that the first mounting portion 2023 and the second mounting portion 2041 may be fastened together.

In some embodiments of the present invention, as shown in fig. 10 and 11, a clamping structure 2024 may be disposed on the peripheral wall of the first mounting portion 2023, and the clamping structure 2024 may include: the first clamping structure 2025 and the second clamping structure 2026 are disposed opposite to each other and spaced apart from each other, so that a clamping groove 2027 can be formed between the first clamping structure 2025 and the second clamping structure 2026, when the first mounting portion 2023 is disposed as a boss and the second mounting portion 2041 is disposed as a mounting hole, an edge of the mounting hole is clamped in the clamping groove 2027, so that the first mounting portion 2023 and the second mounting portion 2041 can be stably assembled together, and the upper cover 204 can be prevented from being loosened.

In some embodiments of the present invention, as shown in fig. 11, the upper surface of the first mounting portion 2023 of the intermediate upper connecting plate 205 has a strap mounting groove 2028. It should be noted that, when the battery module 20 is the lower battery module 3, after the lower battery module 3 is clamped in the lower case 10, the lower battery module 3 is pressed in the lower case 10 by using a binding band, wherein the binding band can be installed in the binding band installation groove 2028, and the binding band installation groove 2028 can limit the position of the binding band, thereby improving the position stability of the binding band, preventing the position of the binding band from moving, and further pressing the battery module 20 by the binding band.

In some embodiments of the present invention, as shown in fig. 10, the upper surface of the first mounting portion 2023 of the outer upper corner bead 202 has a limiting rib 2029 for stopping the first plate 601, wherein, when the first plate 601 is assembled in place, the limiting rib 2029 can limit the first plate 601, so that the operator can know that the fastening member 60 is assembled in place, thereby ensuring that the fastening member 60 is mounted in place and facilitating the installation of the fastening member 60.

In some embodiments of the present invention, as shown in fig. 12, each row of electric core assembly 201 may include: elastic pad 2011 and a plurality of electric core 2012, a plurality of electric core 2012 stack together in proper order, elastic pad 2011 can set up between adjacent electric core 2012, elastic pad 2011 can bond together with electric core 2012 through gluing, elastic pad 2011 is preferably the aerogel felt, it can keep two adjacent electric core 2012 to have the interval to set up like this, elastic pad 2011 has the effect of absorbing electric core 2012 and bulging, and, elastic pad 2011 has good heat-proof quality, be used for obstructing the heat that single electric core 2012 produced, can avoid on the electric core 2012 heat transfer to adjacent electric core 2012.

In some embodiments of the present invention, as shown in fig. 12, the outer surface of the protection portion 2014 can be provided with a positioning hole 2015 and a guiding surface 2016, wherein, when installing the battery module 20, the clamp can be used to clamp the battery module 20 and put the battery module 20 into the lower casing 10, and the clamp can be matched with the positioning hole 2015 through the guiding surface 2016, so as to facilitate the positioning of the clamp and the protection portion 2014, and further facilitate the clamping of the clamp to clamp the battery module 20.

In some embodiments of the present invention, protection portion 2014, intermediate junction plate, outside angle bead, compressing mounting 60 all can have the effect of insulating protection, can prevent electric core 2012 module electric leakage to can guarantee battery module 20's safety in utilization. Also, the cells 2012 of the present application may be stacked and then directly assembled into the lower case 10, and then the battery module 20 may be compressed in the lower case 10 by the compression fixture 60.

The assembly process of the battery module 20 is as follows: first, the protection part 2014, the elastic pad 2011, the gasket 2013 and the battery cell 2012 are stacked in a tool to form the battery pack assembly 201, then the middle connecting plate and the outer corner protector are pasted on the battery pack assembly 201 to form the battery module 20, then the battery module 20 is placed in the lower shell 10, the bus bars are welded, then the upper cover 204 is installed, and finally the pressing fixing piece 60 and the binding band are pressed on the battery module 20, so that the battery module 20 is fixed.

As shown in fig. 1-20, a battery pack according to an embodiment of the present invention includes: lower casing 10, upper battery module 4, lower floor's battery module 3, module fixed knot construct 2, first compressing tightly piece 701 and upper housing. Lower floor's battery module 3 and lower floor's battery module 3 all set up in the battery package, and upper battery module 4 sets up in lower floor's battery module 3's top moreover to can realize the design of double-deck battery module 20 in the battery package.

The module fixing structure 2 is disposed in the lower case 10, and the module fixing structure 2 is used to clamp the lower battery module 3 in the lower case 10 and fix the upper battery module 4 in the battery pack, that is, the module fixing structure 2 can simultaneously assemble the upper battery module 4 and the lower battery module 3 in the lower case 10. Wherein, at the in-process of assembly battery package, module fixed knot constructs 2 and establishes lower floor's battery module 3 with pressing from both sides in casing 10 down, then assemble upper battery module 4 on module fixed knot constructs 2 again, lower floor's battery module 3 need not assemble into battery module just can assemble in casing 10 down, compared with the prior art, the process of making the battery module can be saved to the setting like this, can avoid lower floor's battery module 3 to set up end plate and curb plate 3012, thereby can reduce the weight of battery package, and then can realize the lightweight design of battery package. Moreover, by omitting the end plates and the side plates 3012, the internal space of the battery pack can be saved, and more battery modules 20 can be arranged in the battery pack, so that the energy density of the battery pack can be improved, and the cruising ability of the battery pack can be improved. Meanwhile, the lower-layer battery module 3 is clamped in the lower shell 10 through the module fixing structure 2, so that the assembly process of the lower-layer battery module and the mounting beam in the prior art can be omitted, the structure of the battery pack can be simplified, the manufacturing cost of the battery pack can be saved, the assembly step of the battery pack can be simplified, and the assembly efficiency of the battery pack can be improved.

First compressing member 701 is used for compressing and fixing lower battery module 3 in lower casing 10, wherein, first compressing member 701 can set up to the bandage, and after lower battery module 3 pressed from both sides and establishes in lower casing 10, use first compressing member 701 to compress tightly lower battery module 3 in lower casing 10, and the bandage can carry out spacing in the height to lower battery module 3 to can prevent that lower battery module 3 from moving in upper and lower direction, and then can reduce the operating noise of battery package. And, the upper casing lid is established on casing 10 down and is connected with casing 10 down, through the cooperation of upper casing and casing 10 down, can seal battery module 20 inside the battery package, can avoid the outside object of battery package to get into the battery package to can guarantee the operational reliability of battery package.

From this, through lower casing 10, upper battery module 4, lower floor's battery module 3, module fixed knot construct 2, first compress tightly a 701 and go up the casing cooperation, can simplify the assembly process and the structure of battery package, can promote the assembly efficiency of battery package, also can reduce the manufacturing cost of battery package to, also, can save the inner space of battery package, can promote the energy density of battery package.

As shown in fig. 1 to 3, a lower case 10 of a battery pack according to an embodiment of the present invention includes: a body 1 and a module fixing structure 2. The body 1 can limit the accommodation space 702, the accommodation space 702 can be used for installing the battery module 20, the module fixing structure 2 is arranged on the body 1, the module fixing structure 2 is used for clamping the lower-layer battery module 3 of the battery pack in the lower shell 10, and the module fixing structure 2 fixes the upper-layer battery module 4 of the battery pack in the lower shell 10, that is, the module fixing structure 2 is used for clamping the lower-layer battery module 3 of the battery pack in the accommodation space 702, and the module fixing structure 2 fixes the upper-layer battery module 4 of the battery pack in the battery pack.

Wherein, at the in-process of assembly battery package, press from both sides lower floor's battery module 3 earlier and establish in casing 10 down, then assemble upper battery module 4 on module fixed knot constructs 2, lower floor's battery module 3 need not assemble into battery module just can assemble in casing 10 down, compare with prior art, the process of making battery module can be saved in the setting like this, can avoid lower floor's battery module 3 to set up end plate and curb plate 3012, thereby can reduce the weight of battery package, and then can realize the lightweight design of battery package. Moreover, by omitting the end plates and the side plates 3012, the internal space of the battery pack can be saved, and more battery modules 20 can be arranged in the battery pack, so that the energy density of the battery pack can be improved, and the cruising ability of the battery pack can be improved. Meanwhile, the lower-layer battery module 3 is clamped in the lower shell 10 through the module fixing structure 2, so that the assembly process of the lower-layer battery module and the mounting beam in the prior art can be omitted, the assembly steps of the battery pack can be simplified, and the assembly efficiency of the battery pack can be improved.

In some embodiments of the present invention, as shown in fig. 3, the module fixing structure 2 may include: the middle pressure part 21 and the side pressure part 22, and the middle pressure part 21 and the side pressure part 22 can be arranged on the body 1, and the middle pressure part 21 and the side pressure part 22 jointly define a module intervening space 23. After the battery pack is assembled, the lower battery module 3 is clamped in the module clamping space 23 by the middle pressing part 21 and the side pressing part 22, so that the lower battery module 3 can be stably assembled on the lower shell 10, and the aim of fixing the lower battery module 3 can be fulfilled.

In some embodiments of the present invention, the middle pressing portion 21 and the side pressing portion 22 are disposed relatively, and the middle pressing portion 21 and the side pressing portion 22 are spaced apart, it should be noted that, in the width direction of the lower casing 10, that is, in the left and right directions in fig. 3, the middle pressing portion 21 and the side pressing portion 22 are disposed relatively and spaced apart, so that the arrangement of the module clamp setting space 23 can be realized, it can be ensured that the lower layer battery module 3 can be clamped in the lower casing 10, and thus the arrangement form of the middle pressing portion 21 and the side pressing portion 22 can be more reasonable.

In some embodiments of the present invention, as shown in fig. 3, the lower case 10 of the battery pack may further include: the band fixing plate 5, the band fixing plate 5 may be provided to the intermediate pressure portion 21, for example: the band fixing plate 5 may be provided at the upper end of the intermediate pressure portion 21. Wherein, the one end of the first compressing member 701 is connected with the bandage fixing plate 5, the other end of the first compressing member 701 is connected with the body 1, the lower battery module 3 is clamped in the module clamping space 23, and then the lower battery module 3 is compressed in the module clamping space 23 by using the bandage, and the one end of the bandage can be connected with the body 1, and the other end of the bandage can be connected with the bandage fixing plate 5, thereby the work purpose of fixing the bandage can be realized, the bandage can highly limit the lower battery module 3, thereby preventing the lower battery module 3 from moving in the up-and-down direction, and further reducing the work noise of the battery pack.

In some embodiments of the utility model, as shown in fig. 3, side splenium 22 has upper battery module fixed orifices 24, it is explained that, in the in-process of assembling the battery package, upper battery module 4 can link together with upper battery module fixed orifices 24 through the bolt, through setting up upper battery module fixed orifices 24, can assemble upper battery module 4 on module fixed knot constructs 2 firmly, can realize assembling upper battery module 4's work purpose in the battery package, and, upper battery module fixed orifices 24's simple structure, the production and the manufacturing of side splenium 22 can be convenient for in this setting, can promote side splenium 22's production efficiency, also can reduce side splenium 22's manufacturing cost. However, the present invention is not limited to this, and the assembly form of the upper battery module 4 and the lateral pressure portion 22 may be other assembly forms as long as the upper battery module 4 and the lateral pressure portion 22 are assembled together.

In some embodiments of the utility model, as shown in fig. 3, injecing pencil passageway 25 in the well splenium 21, it needs to explain, pencil passageway 25 and the outside intercommunication of well splenium 21, pencil passageway 25 is used for walking the line, after upper battery module 4 and lower floor's battery module 3 assemble on casing 10 down, high-pressure pencil and the low pressure pencil in the battery package can set up in pencil passageway 25, so set up the line of pencil in can being convenient for the battery package, can avoid the pencil in the battery package to produce the contact with other spare parts, thereby can prevent that the pencil from being damaged by other spare parts, and then can prevent that the battery package from taking place the short circuit.

In some embodiments of the present invention, as shown in fig. 3, the body 1 may have a first side edge beam 11, a bottom plate 12 and a second side edge beam 13, the first side edge beam 11 and the second side edge beam 13 are respectively disposed on the first side and the second side of the bottom plate 12, and it should be noted that, as shown in fig. 3, the first side edge beam 11 may be disposed on the left side of the bottom plate 12, and the second side edge beam 13 may be disposed on the right side of the bottom plate 12.

As shown in fig. 3, side pressing portion 22 may include: first side splenium 26 and second side splenium 27, first side splenium 26 is fixed to be set up in first side roof beam 11, and second side splenium 27 is fixed to be set up in second side roof beam 13, and well splenium 21 can set up in bottom plate 12. Wherein, first side splenium 26 can weld on first side boundary beam 11, second side splenium 27 can weld on second side boundary beam 13, after the battery package is joined in marriage, when the battery package work, because lower floor's battery module 3 presss from both sides and establishes between side splenium 22 and well splenium 21, the setting can make first side splenium 26 and second side splenium 27 have sufficient intensity to bear the bulging force of lower floor's battery module 3 like this, can prevent that first side splenium 26 and second side splenium 27 from separating with body 1, thereby can guarantee the installation reliability of lower floor's battery module 3. Furthermore, the intermediate pressure part 21 may be welded to the bottom plate 12, so that the intermediate pressure part 21 can be stably mounted on the bottom plate 12, and the connection between the intermediate pressure part 21 and the bottom plate 12 can be prevented from being broken, so that the intermediate pressure part 21 has sufficient strength to withstand the expansive force of the lower battery modules 3 on both sides.

In some embodiments of the present invention, in the width direction of the lower casing 10, that is, the left and right direction in fig. 3, the middle pressure portion 21 is located at the middle position of the bottom plate 12, it should be noted that, in the width direction of the lower casing 10, the middle pressure portion 21 is located between the first side pressure portion 26 and the second side pressure portion 27, and the middle pressure portion 21 is spaced apart from the first side pressure portion 26 and the second side pressure portion 27, so as to set up the module clamping space 23 between the middle pressure portion 21 and the first side pressure portion 26, and between the middle pressure portion 21 and the second side pressure portion 27, it can be ensured that the lower layer battery module 3 can be clamped on the lower casing 10.

In some embodiments of the present invention, as shown in fig. 3, the reinforcing structure 28 may be disposed inside the middle pressure portion 21 and the side pressure portion 22, it should be explained that the middle pressure portion 21 and the side pressure portion 22 may be disposed inside as a hollow structure, the reinforcing structure 28 is disposed inside the middle pressure portion 21 and the side pressure portion 22, wherein the reinforcing structure 28 has a function of reinforcing structure, the structural strength of the middle pressure portion 21 and the side pressure portion 22 can be improved by such a configuration, the ability of the middle pressure portion 21 and the side pressure portion 22 to bear the expansion force of the battery module 20 can be improved, and thus the deformation of the lower casing 10 can be prevented.

According to the utility model discloses vehicle, including the lower casing 10 of above-mentioned embodiment, lower casing 10 sets up and installs on the vehicle, and this lower casing 10 can simplify the assembly process of battery package, can promote the assembly efficiency of battery package to, also can save the inner space of battery package, can promote the energy density of battery package.

In some embodiments of the present invention, as shown in fig. 4, 5 and 15, the battery pack may further include: installing support 30, upper battery module 4 set up in installing support 30, and installing support 30 is connected with module fixed knot constructs 2, and wherein, through setting up installing support 30, can install upper battery module 4 in the battery package firmly, can prevent upper battery module 4 shake.

According to the utility model discloses battery module 20 sets up in the battery package, and battery module 20 can be upper battery module 4 in the battery package, also can be lower floor's battery module 3 in the battery package.

As shown in fig. 1 to 5, a mounting bracket 30 for mounting a battery module 20 according to an embodiment of the present invention includes: a receiving groove 301 and an end fixing plate 302. In assembling the battery pack, the receiving groove 301 is coupled to the side pressure part 22 of the battery pack, the end fixing plate 302 is disposed in the receiving groove 301, and the end fixing plate 302 and the receiving groove 301 define a receiving cavity 303 in which the battery module 20 is disposed.

When the upper battery module 4 of the battery pack is assembled, the mounting bracket 30 is connected to the side pressure part 22 of the battery pack, the battery module 20 is mounted in the accommodating cavity 303, and the battery module 20 is connected to the accommodating cavity 301 and/or the end fixing plate 302, so that the assembly of the upper battery module 4 is realized. Set up like this and can install battery module 20 in the battery package fast and reliably, can promote battery module 20's installation effectiveness to, installing support 30 simple structure of this application can make things convenient for installing support 30's production and manufacturing, thereby can reduce installing support 30's manufacturing cost, and then can reduce the manufacturing cost of battery package.

Meanwhile, the battery module 20 mounted in the receiving cavity 303 does not need to form a battery module, and the battery module 20 is not provided with the end plate and the side plate 3012, so that the number of parts constituting the battery module 20 can be reduced, the manufacturing cost and the weight of the battery module 20 can be reduced, and the lightweight design of the battery module 20 can be realized. In addition, the structure of the battery module 20 can be simplified, and the production and manufacture of the battery module 20 can be facilitated, so that the assembly efficiency of the battery module 20 can be improved, and the production efficiency of the battery module 20 can be improved.

In some embodiments of the utility model, the cross-section of holding tank 301 can be constructed to "U" type, and the both ends of holding tank 301 open the setting, and end fixing plate 302 can set up in the end of opening of holding tank 301, so set up and to make holding tank 301 and end fixing plate 302 inject jointly and hold chamber 303, can make holding tank 301 and end fixing plate 302 arrange the form more reasonable.

In some embodiments of the present invention, as shown in fig. 4, the accommodating groove 301 may include: a support plate 3011 and two side plates 3012, the two side plates 3012 are disposed on two sides of the support plate 3011, the two side plates 3012 may have bolt connection holes 3013, and the bolt connection holes 3013 are used to connect to the battery module 20, for example: after the battery module 20 is installed in the accommodating cavity 303, the battery module 20 and the two side plates 3012 can be stably assembled together by matching the bolt with the bolt connecting hole 3013, so that the battery module 20 in the accommodating groove 301 can be prevented from loosening, and the vibration of the battery module 20 in the accommodating groove 301 can be reduced.

In some embodiments of the present invention, as shown in fig. 4, at least one of the two side plates 3012 may be provided with a heating film wire outlet notch 3014, it should be noted that only one side plate 3012 may be provided with the heating film wire outlet notch 3014, and also two side plates 3012 may be provided with the heating film wire outlet notch 3014 at the same time, after the battery module 20 is installed in the accommodating cavity 303, the wire harness of the battery module 20 may extend out of the mounting bracket 30 through the heating film wire outlet notch 3014.

In some embodiments of the present invention, as shown in fig. 4, the heating film wire outlet gap 3014 is disposed on the upper end of the side plate 3012, such a configuration can facilitate the extension of the wire harness of the battery module 20 from the heating film wire outlet gap 3014, and can reduce the length of the wire harness in the mounting bracket 30, thereby saving the space in the mounting bracket 30, and also facilitating the arrangement of the heating film. However, the present invention is not limited thereto, and the heating film outlet notch 3014 may be disposed at another position of the side plate 3012.

In some embodiments of the present invention, as shown in fig. 4, the supporting plate 3011 may be provided with side pressure connecting holes 3015, and the side pressure connecting holes 3015 are used to connect to the side pressure portion 22, wherein, when the mounting bracket 30 is mounted, the supporting plate 3011 can be mounted on the side pressure portion 22 by matching the side pressure connecting holes 3015 with bolts, so as to achieve the working purpose of fixedly mounting the mounting bracket 30 in the battery pack.

In some embodiments of the present invention, as shown in fig. 4, the end fixing plate 302 may be disposed on the upper surface of the supporting plate 3011, and the end fixing plate 302 may have a strap connecting hole 3021, wherein after the battery module 20 is mounted in the accommodating cavity 303, the battery module 20 is pressed in the accommodating cavity 303 by using a strap, so that the battery module 20 can be prevented from moving in the up-down direction, and thus the battery module 20 can be prevented from moving out of the accommodating cavity 303. Also, the mounting bracket 30 may be provided with two end fixing plates 302, the two end fixing plates 302 being located at the two open ends of the receiving groove 301, respectively, one end of the band being coupled to the band coupling hole 3021 of one end fixing plate 302, and the other end of the band being coupled to the band coupling hole 3021 of the other end fixing plate 302, so that the band can be reliably fitted to the mounting bracket 30, and the band can be securely fastened to the battery module 20.

In some embodiments of the present invention, as shown in fig. 4, the outer side surface of the end fixing plate 302 may be provided with a first avoiding groove 3022, the first avoiding groove 3022 may extend along the height direction of the end fixing plate 302, the first avoiding groove 3022 corresponds to the side pressure connecting hole 3015, it should be explained that, in the first extending direction of the avoiding groove 3022, the side pressure connecting hole 3015 corresponds to the first avoiding groove 3022, so the side pressure connecting hole 3015 and the first avoiding groove 3022 can be set up to avoid, it can be ensured that the bolt can pass through the side pressure connecting hole 3015, thereby the smooth assembly of the mounting bracket 30 and the side pressure portion 22 can be ensured.

In some embodiments of the present invention, the inner side surface of the end fixing plate 302 may be provided with a second avoiding groove 3023, the second avoiding groove 3023 is provided along the height direction extension of the end fixing plate 302, and in the length direction of the end fixing plate 302, i.e. the front and back direction in fig. 4, the first avoiding groove 3022 and the second avoiding groove 3023 are alternately arranged, so that the first avoiding groove 3022 and the second avoiding groove 3023 are opposite, the structural strength of the end fixing plate 302 can be ensured, and thus the end fixing plate 302 can be prevented from deforming. In addition, in the process of placing the battery module 20 into the housing cavity 303, the battery module 20 can be placed into the housing cavity 303 by clamping the battery module 20 with a jig, and after the battery module 20 is placed into the housing cavity 303, the second escape groove 3023 can escape from the jig, so that the jig can be smoothly removed from the housing cavity 303.

The utility model discloses an in some embodiments, holding tank 301 and end fixing plate 302 all can set up to integrated into one piece spare, and wherein, holding tank 301 and end fixing plate 302 all can adopt section bar extrusion integrated into one piece, set up the structural strength that can promote holding tank 301 and end fixing plate 302 like this, can avoid holding tank 301 and end fixing plate 302 fracture to can guarantee that battery module 20 installs reliably.

The utility model discloses an in some embodiments, lower floor's battery module 3 and upper battery module 4 all can set up to a plurality ofly, that is to say, are provided with a plurality of lower floor's battery module 3 and a plurality of upper battery module 4 in the battery package, so set up the energy density that can promote the battery package, can guarantee the duration of battery package.

In some embodiments of the present invention, as shown in fig. 20, the lower layer battery module 3 may be provided with an outer lower corner bead 203, the outer lower corner bead 203 is connected to the lower casing 10, it should be noted that the outer lower corner bead 203 is disposed outside the outermost core assembly 201 of the lower layer battery module 3, and the outer lower corner bead 203 is located below the outermost core assembly 201, the outer lower corner bead 203 is used for holding the outermost core assembly 201 and is connected to the lower casing 10 of the battery pack, the outer lower corner bead 203 may be bonded to the outermost core assembly 201, so as to fix the lower layer battery module 3 to the lower casing 10.

As shown in fig. 13 and 14, the upper battery module 4 may include: a plurality of rows of cell assemblies 201, an upper battery module middle lower connecting plate 41, an upper battery module middle upper connecting plate 42, an upper battery module outer side upper corner guard 43, an upper battery module outer side lower corner guard 44, and an upper battery module upper cover 45. The upper-layer battery module intermediate lower connection plate 41 may have the same structure as the intermediate lower connection plate 206, and the upper-layer battery module intermediate upper connection plate 42 may have the same structure as the intermediate upper connection plate 205. Multiple columns of electric core assemblies 201 are arranged side-by-side and/or side-by-side. The lower connecting plate 41 in the middle of the upper battery module is arranged between two adjacent columns of the cell assemblies 201, and the lower connecting plate 41 in the middle of the upper battery module is used for supporting and spacing two adjacent columns of the cell assemblies 201. Upper connecting plate 42 sets up between two adjacent electric core subassemblies 201 in the middle of the upper battery module, and upper connecting plate 42 is used for compressing tightly and two adjacent electric core subassemblies 201 of interval in the middle of the upper battery module. Upper battery module outside upper portion angle bead 43 sets up in the outside of outside battery module 201, and upper battery module outside upper portion angle bead 43 is used for being connected with installing support 30, and it should be noted that upper battery module outside upper portion angle bead 43 can be provided with the fastener connecting hole, and the fastener can pass fastener connecting hole and installing support 30's bolt connecting hole 3013 simultaneously to can fix upper battery module 4 in installing support 30. The upper battery module outer lower corner protectors 44 are disposed at the outer sides of the outermost battery cell assemblies 201 and located at the lower portions of the outermost battery cell assemblies 201, and the upper battery module outer lower corner protectors 44 are used for supporting the outermost battery cell assemblies 201. The upper battery module cover 45 is disposed at the upper end of the multiple rows of the cell assemblies 201 and connected to at least one of the upper connecting plate 42 in the middle of the upper battery module and the upper corner protector 43 on the outer side of the upper battery module.

It should be noted that, the middle lower connecting plate 41 of the upper battery module and the middle upper connecting plate 42 of the upper battery module can be bonded to two adjacent rows of the cell assemblies 201, so that the middle lower connecting plate 41 of the upper battery module and the middle upper connecting plate 42 of the upper battery module can be reliably connected to the cell assemblies 201, and the cell assemblies 201 can also be restrained.

And, the upper battery module outer upper corner 43 is positioned at the upper portion of the outermost core assembly 201, and the upper battery module outer upper corner 43 serves to press the outermost core assembly 201. It should be noted that the upper cell module outer upper corner 43 may be disposed at a shoulder position of the cell assembly 201. Upper battery module outside lower part angle bead 44 sets up in the outside of outside electric core subassembly 201 to upper battery module outside lower part angle bead 44 is located the lower part of outside electric core subassembly 201, and upper battery module outside lower part angle bead 44 is used for holding electric core subassembly 201 in the outside, and it should be explained that upper battery module outside lower part angle bead 44 compresses tightly electric core subassembly 201 with upper battery module outside upper part angle bead 43 jointly, and upper battery module outside lower part angle bead 44 and upper battery module outside upper part angle bead 43 all can be in the same place with electric core subassembly 201 bonds. The upper battery module outside lower bead 44 and the upper battery module outside upper bead 43 can protect the electric core assembly 201, so that the electric core assembly 201 can be prevented from being damaged.

In some embodiments of the present invention, as shown in fig. 13, the upper battery module 4 may further include: middle end plate 46, middle end plate 46 can set up between two adjacent electric core subassemblies 201 that set up side by side, through setting up middle end plate 46, can conveniently arrange the low pressure plug connector in battery module 20, also can conveniently press from both sides electric core subassembly 201.

In some embodiments of the present invention, as shown in fig. 14, at least one of the upper connecting plate 42 in the middle of the upper battery module and the upper corner protector 43 on the outer side of the upper battery module is provided with a third mounting portion 47, and it should be noted that the third mounting portion 47 may be only provided on the upper connecting plate 42 in the middle of the upper battery module, may be only provided on the upper corner protector 43 on the outer side of the upper battery module, and may also be provided on the upper connecting plate 42 in the middle of the upper battery module and the upper corner protector 43 on the outer side of the upper battery module.

As shown in fig. 5, the upper battery module cover 45 may be provided with fourth mounting parts 48 adapted to be engaged with the third mounting parts 47. Wherein, after the assembly of upper battery module 4 is accomplished, third installation department 47 is in the same place with the joint of fourth installation department 48, can assemble upper battery module upper cover 45 on upper battery module 4 reliably, can prevent that upper battery module upper cover 45 from breaking away from upper battery module 4, also can avoid upper battery module upper cover 45 not hard up, and, upper battery module upper cover 45 can play the guard action to the spare part between electric core subassembly 201 and upper battery module upper cover 45, can avoid the spare part between electric core subassembly 201 and the upper battery module upper cover 45 to receive external environment and damage, thereby can guarantee upper battery module 4's operational reliability. Meanwhile, the upper battery module upper cover 45 can be rapidly assembled on the upper battery module 4 by clamping the third mounting part 47 and the fourth mounting part 48, so that the assembling time of the upper battery module upper cover 45 can be saved, and the assembling efficiency of the upper battery module 4 can be improved.

In some embodiments of the present invention, as shown in fig. 15, the battery pack may further include: the second pressing member 49, the second pressing member 49 may be configured as a binding band, the upper surface of the third mounting portion 47 has an upper battery module binding band mounting groove 491, the second pressing member 49 is located in the upper battery module binding band mounting groove 491, both ends of the second pressing member 49 are respectively connected with the mounting bracket 30, wherein, after the upper battery module 4 is placed in the mounting bracket 30 and is assembled with the mounting bracket 30, the second pressing member 49 is assembled in the upper battery module binding band mounting groove 491 and is connected with the mounting bracket 30, the second pressing member 49 may press the upper battery module 4 in the mounting bracket 30, thereby preventing the upper battery module 4 from moving out of the mounting bracket 30.

In some embodiments of the present invention, as shown in fig. 13, the upper battery module 4 may further include: the intermediate bushing 492, one end of the intermediate bushing 492 is connected to the support plate 3011 of the mounting bracket 30 and the other end of the intermediate bushing 492 is connected to the second pressing member 49 after the upper battery module 4 is assembled, so that the second pressing member 49 can be stably assembled to the mounting bracket 30 and the second pressing member 49 can be prevented from being loosened.

Wherein, the assembly process of the upper battery module 4 and the lower battery module 3 in the battery pack is as follows: first, the cell assembly 201 of the lower battery module 3 is clamped into the lower housing 10 by a clamp, then the bolts connecting and fixing the outer lower corner bead 203 and the lower housing 10 are tightened, at this time, the side pressing part 22 and the middle pressing part 21 can compress the cell assembly 201 and fix the cell assembly 201, then the bus bars among the cells 2012 in the cell assembly 201 are welded, and then the lower battery module 3 is fixed by a binding band.

Then, the upper battery module 4 is placed into the mounting bracket 30 through a clamp, and a fastening piece which is used for connecting the upper corner guard 43 on the outer side of the upper battery module and the mounting bracket 30 is tightened, wherein the fastening piece can be a bolt, the mounting bracket 30 clamps the lower battery module 3 at the moment, then busbars among the battery cells 2012 are welded, then the upper battery module 4 is fixed through a binding belt, and then the mounting bracket 30 is assembled with the side pressing parts 22 through the bolt, so that the mounting work of the upper battery module 4 is completed.

According to the utility model discloses vehicle, including the battery package of above-mentioned embodiment, the assembly process and the structure of battery package can be simplified to this battery package, can promote the assembly efficiency of battery package, also can reduce the manufacturing cost of battery package to, also can save the inner space of battery package, can promote the energy density of battery package.

As shown in fig. 21, the method for mounting the battery module 20 in the battery pack according to the embodiment of the present invention includes the following steps: in the process of mounting battery module 20 in the battery pack, first, a plurality of battery cells 2012 are stacked into a battery cell assembly 201, and then, the battery cell assembly 201 is subjected to a layering process, so that a lower battery module 3 and an upper battery module 4 can be obtained. And then the lower battery module 3 is gripped and placed in the module clamping space 23 of the lower case 10 of the battery pack, and the lower battery module 3 is clamped in the clamping space, so that the lower battery module is fixed in the clamping space. Then the upper battery module 4 is clamped into the mounting bracket 30 of the battery pack, and the upper battery module 4 is connected with the mounting bracket 30, for example: the upper battery module 4 and the mounting bracket 30 may be coupled together by bolts. And then grips the upper-layer battery module 4 and the mounting bracket 30, which are mounted together, and places the mounting bracket 30 above the lower-layer battery module 3, and couples the mounting bracket 30 with the lower case 10, for example: the mounting bracket 30 may be coupled with the lower case 10 by bolts.

The battery module 20 is installed by the installation method, the battery pack can be installed after the plurality of battery cells 2012 are stacked, and compared with the prior art, the battery module can be omitted, and the process of installing the end plates and the side plates 3012 can be omitted, so that the installation process of the battery pack can be simplified, and the assembly efficiency of the battery pack can be improved. Further, by omitting the installation of the end plates and the side plates 3012, the weight of the battery module 20 can be reduced, and a lightweight design of the battery pack can be achieved.

In some embodiments of the present invention, as shown in fig. 12, the step of "stacking a plurality of cells 2012 into a cell assembly 201" may include: the elastic pad 2011 is bonded between two adjacent battery cells 2012, and in the stacking direction of the battery cells 2012, the protection portion 2014 is bonded to the outer side of the battery cell 2012 located on the outermost side. It should be noted that the elastic pad 2011 is disposed between two adjacent battery cells 2012, the elastic pad 2011 may be bonded to the battery cells 2012 by a glue, and the elastic pad 2011 is preferably an aerogel felt, so that the arrangement can keep the two adjacent battery cells 2012 spaced apart from each other, the elastic pad 2011 has an effect of absorbing swelling of the battery cells 2012, and the elastic pad 2011 has a good heat insulation performance, and is used for blocking heat generated by a single battery cell 2012 and can prevent heat on the battery cell 2012 from being transferred to the adjacent battery cell 2012. And, the protection part 2014 is preferably injection molding material, and the protection part 2014 is used for resisting the friction of the end of the electric core assembly 201 during the assembling process, so as to protect the end of the electric core assembly 201.

In some embodiments of the present invention, as shown in fig. 12, the step "stacking a plurality of cells 2012 into a cell assembly 201" may further include: bonding a gasket 2013 between the protection portion 2014 and the cell 2012, wherein the gasket 2013 can be arranged between the protection portion 2014 and the outermost cell 2012, the gasket 2013 is preferably of a rubber structure, the thickness of the gasket 2013 is 2-8mm, and two sides of the gasket 2013 are connected with the cell 2012 and the protection portion 2014 through glue.

In some embodiments of the present invention, as shown in fig. 16-18, the step of "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may include: the plurality of electric core assemblies 201 are placed in the plurality of second clamps 801 by using the first clamps 80, it should be noted that the plurality of electric core assemblies 201 correspond to the plurality of second clamps 801 one by one, then the plurality of electric core assemblies 201 are arranged side by side, the middle lower connecting plate 206 and the middle upper connecting plate 205 are adhered on one electric core assembly 201 of two adjacent electric core assemblies 201, then the two adjacent second clamps 801 are controlled to move towards the direction approaching to each other, the two adjacent electric core assemblies 201 can be clamped and adhered to the middle lower connecting plate 206 and the middle upper connecting plate 205, and thus the two adjacent electric core assemblies 201 can be assembled together. It should be explained that the middle lower connecting plate 206 and the middle upper connecting plate 205 can be adhesively fixed with two adjacent electric core assemblies 201.

In some embodiments of the present invention, as shown in fig. 7, "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may further include: an outer upper bead 202 and an outer lower bead 203 are respectively adhered to the outer side of the core pack 201 located at the outermost side, and the outer upper bead 202 and the outer lower bead 203 are respectively adhered to the upper portion and the lower portion of the core pack 201. Wherein, outside upper portion angle bead 202 can be used for compressing tightly electric core subassembly 201 in the outside, and outside lower part angle bead 203 is used for holding electric core subassembly 201 in the outside and is connected with the lower casing 10 of battery package, compresses tightly electric core subassembly 201 through outside upper portion angle bead 202 and outside lower part angle bead 203 jointly, can make battery module 20 need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20 to can reduce battery module 20's manufacturing cost and weight. Meanwhile, the internal space of the battery pack can be saved, so that the energy density of the battery pack can be improved, in addition, the structure of the battery module 20 can be simplified, the production and the manufacture of the battery module 20 can be facilitated, the assembly efficiency of the battery module 20 can be improved, and the production efficiency of the battery module 20 can be improved.

In some embodiments of the present invention, as shown in fig. 16 and 17, "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may further include: a cell assembly 201 is placed in the second jig 801 using the first jig 80, in which the battery module 20 includes a cell assembly 201, and then the outer upper and

lower beads

202 and 203 are respectively attached to the outer sides of the cell assembly 201, and the outer upper and

lower beads

202 and 203 are respectively attached to the upper and lower portions of the cell assembly 201. Wherein, outside upper portion angle bead 202 can be used for compressing tightly electric core subassembly 201 in the outside, and outside lower part angle bead 203 is used for holding electric core subassembly 201 in the outside and is connected with the lower casing 10 of battery package, compresses tightly electric core subassembly 201 through outside upper portion angle bead 202 and outside lower part angle bead 203 jointly, can make battery module 20 need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20 to can reduce battery module 20's manufacturing cost and weight. Meanwhile, the internal space of the battery pack can be saved, so that the energy density of the battery pack can be improved, in addition, the structure of the battery module 20 can be simplified, the production and the manufacture of the battery module 20 can be facilitated, the assembly efficiency of the battery module 20 can be improved, and the production efficiency of the battery module 20 can be improved.

In some embodiments of the present invention, as shown in fig. 18, "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may further include: after the first fixture 80 puts the plurality of cell assemblies 201 into the plurality of second fixtures 801, it should be noted that the plurality of cell assemblies 201 correspond to the plurality of second fixtures 801 one by one, then the plurality of cell assemblies 201 are arranged side by side and/or side by side, an upper battery module middle lower connecting plate 41 and an upper battery module middle upper connecting plate 42 are bonded to one of the cell assemblies 201 of two adjacent cell assemblies 201, then the two adjacent second fixtures 801 are controlled to move toward a direction approaching each other, so that the two adjacent cell assemblies 201 can clamp and bond the upper battery module middle lower connecting plate 41 and the upper battery module middle upper connecting plate 42, and thus the two adjacent cell assemblies 201 can be assembled together. It should be explained that the upper battery module middle lower connecting plate 41 and the upper battery module middle upper connecting plate 42 can be adhesively fixed to two adjacent cell assemblies 201.

In some embodiments of the present invention, as shown in fig. 14, "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may further include: the upper battery module outside lower bead 44 and the upper battery module outside upper bead 43 are respectively adhered to the outside of the core pack 201 located at the outermost sides, and the upper battery module outside lower bead 44 and the upper battery module outside upper bead 43 are respectively adhered to the upper and lower portions of the core pack 201. Wherein, upper battery module outside upper portion angle bead 43 can be used for compressing tightly electric core subassembly 201 in the outside, upper battery module outside lower part angle bead 44 is used for holding electric core subassembly 201 in the outside, compress tightly electric core subassembly 201 jointly through upper battery module outside upper portion angle bead 43 and upper battery module outside lower part angle bead 44, can make battery module 20 need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing battery module 20, thereby can reduce battery module 20's manufacturing cost and weight. Meanwhile, the internal space of the battery pack can be saved, so that the energy density of the battery pack can be improved, in addition, the structure of the battery module 20 can be simplified, the production and the manufacture of the battery module 20 can be facilitated, the assembly efficiency of the battery module 20 can be improved, and the production efficiency of the battery module 20 can be improved.

In some embodiments of the present invention, as shown in fig. 17, "layering the cell assembly 201 to obtain the lower battery module 3 and the upper battery module 4" may further include: an electric core assembly 201 is put into the second jig 801 using the first jig 80, in which the upper battery module 4 includes an electric core assembly 201, and then the upper battery module outside lower bead 44 and the upper battery module outside upper bead 43 are respectively attached to the outside of the electric core assembly 201, and the upper battery module outside lower bead 44 and the upper battery module outside upper bead 43 are respectively attached to the upper and lower portions of the electric core assembly 201. Wherein, upper battery module outside upper portion angle bead 43 can be used for compressing tightly electric core subassembly 201 in the outside, upper battery module outside lower part angle bead 44 is used for holding electric core subassembly 201 in the outside, compress tightly electric core subassembly 201 jointly through upper battery module outside upper portion angle bead 43 and upper battery module outside lower part angle bead 44, can make upper battery module 4 need not set up end plate and curb plate 3012, can reduce the spare part quantity of constituteing upper battery module 4, thereby can reduce upper battery module 4's manufacturing cost and weight. Meanwhile, the internal space of the battery pack can be saved, so that the energy density of the battery pack can be improved, in addition, the structure of the upper battery module 4 can be simplified, the production and the manufacture of the upper battery module 4 can be facilitated, the assembly efficiency of the upper battery module 4 can be improved, and the production efficiency of the upper battery module 4 can be improved.

In some embodiments of the present invention, the "clamping lower layer battery module 3 and the module clamp placed on the lower case 10 of the battery pack to establish the space 23" may further include: electrical components are welded to the cell assembly 201, then the upper cover 204 is mounted on the upper end of the cell assembly 201, and the first pressing members 701 are disposed above the lower battery module 3, and the first pressing members 701 can fix the lower battery module 3 in the lower case 10. It should be noted that, after lower battery module 3 is placed in lower housing 10 by first fixture 80, electrical components are welded on core assembly 201, then upper cover 204 is assembled to the upper end of core assembly 201, and after upper cover 204 is installed, lower battery module 3 is pressed in lower housing 10 by first pressing component 701, so that the installation and fixation of lower battery module 3 can be completed.

In some embodiments of the present invention, the "clamping the upper battery module 4 to the mounting bracket 30 of the battery pack and connecting with the mounting bracket 30" may further include: upper battery module 4 electrical components are welded to cell assembly 201, then upper battery module upper cover 45 is mounted on the upper end of cell assembly 201, and second pressing member 49 is disposed above upper battery module 4 to fix upper battery module 4 in mounting bracket 30. It should be explained that, after upper battery module 4 is placed in mounting bracket 30, electrical components of upper battery module 4 are welded on core assembly 201, then upper battery module upper cover 45 is assembled to the upper end of core assembly 201, and after upper battery module upper cover 45 is installed, upper battery module 4 is pressed in mounting bracket 30 by second pressing member 49, so that the assembly of upper battery module 4 and mounting bracket 30 can be completed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module of a battery pack, comprising:

the plurality of rows of electric core assemblies are arranged side by side;

the middle connecting plate is arranged between two adjacent rows of the electric core assemblies and is used for compressing the two adjacent rows of the electric core assemblies at intervals;

the outer side angle bead is arranged on the outer side of the outermost side of the electric core assembly and used for compressing the outermost side of the electric core assembly;

the pressing fixing piece is pressed on the outer side corner protector and connected with the lower shell of the battery pack;

the upper cover is arranged at the upper ends of the electric core assemblies in multiple rows and is connected with at least one of the middle connecting plate and the outer side corner protectors.

2. The battery module of a battery pack according to claim 1, wherein the intermediate connection plate comprises:

the middle lower connecting plate is arranged between two adjacent rows of the electric core assemblies and is used for supporting and spacing the two adjacent rows of the electric core assemblies;

the middle upper connecting plate is arranged between the two adjacent electric core assemblies and is used for compressing the two adjacent electric core assemblies at intervals.

3. The battery module of the battery pack according to claim 2, wherein the outer corner protector comprises:

the outer upper part corner protector is arranged on the outer side of the outermost side of the electric core assembly and is positioned at the upper part of the outermost side of the electric core assembly, and the outer upper part corner protector is used for pressing the outermost side of the electric core assembly;

module outside lower part angle bead, module outside lower part angle bead sets up in the outside and be located the outside the lower part of electricity core subassembly, module outside lower part angle bead is used for holding the outside the electricity core subassembly.

4. The battery module of the battery pack of claim 3, wherein the compression fixture comprises: the second plate is connected between the first plate and the third plate, the first plate is pressed at the upper end of the outer upper corner protector, and the third plate is connected with the lower shell;

the second plate is provided with second plate reinforcing ribs.

5. The battery module of the battery pack according to claim 2, wherein the middle upper connection plate comprises: the first pressing plate and the first spacing plate are arranged below the first pressing plate and are positioned in the middle of the first pressing plate.

6. The battery module of a battery pack according to claim 2, wherein the middle lower connection plate includes: the second partition plate is arranged above the second pressing plate and is positioned in the middle of the second pressing plate.

7. The battery module of the battery pack according to claim 4, wherein at least one of the middle upper connecting plate and the outer upper corner protector is provided with a first mounting portion, and the upper cover is provided with a second mounting portion adapted to be clamped with the first mounting portion.

8. The battery module of the battery pack according to claim 7, wherein a snap-fit structure is provided on a circumferential wall of the first mounting part;

the upper surface of the first mounting part of the middle lower connecting plate is provided with a binding band mounting groove;

the upper surface of first installation department of outside upper portion angle bead has and is used for the backstop the spacing muscle of first board.

9. The battery module of the battery pack of claim 1, wherein the cell assembly comprises:

the battery comprises an elastic pad and a plurality of battery cells, wherein the battery cells are sequentially stacked together, and the elastic pad is arranged between the adjacent battery cells;

a gasket and a protection portion that is provided outside the outermost battery cell in a stacking direction of the plurality of battery cells;

the gasket is arranged between the protection part and the battery cell on the outermost side.

10. The battery module of the battery pack according to claim 9, wherein the outer surface of the protection part is provided with a positioning hole and a guide surface.