CN211879432U - Battery module - Google Patents

Abstract

The utility model discloses a battery module, battery module includes: the battery pack, end shell and topside shell, the battery pack includes a plurality of batteries core of following the first direction and arranging in proper order, end shell is two and follows the spaced apart distribution of second direction, every end shell all includes bottom plate and lower side plate, two bottom plate supports in the below of battery pack, two lower side plate branch are put in the both sides of battery pack, all have the lower partition muscle that is used for separating two adjacent batteries core on every end shell, top shell and end shell are for dividing the body spare, and the top of every end shell all is equipped with a top shell. According to the utility model discloses a battery module is through setting up bottom limit shell and topside shell into components of a whole to when the assembly, can utilize bottom limit shell to fix a position the installation to a plurality of electric cores earlier, reduce the assembly degree of difficulty, moreover, through separating the muscle under setting up on bottom limit shell, can save division board among the correlation technique, reduce cost.

Description

Battery module

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery module is related to.

Background

Battery module among the correlation technique, when the assembly, arrange a plurality of electric cores along the thickness direction of electric core and form electric core subassembly usually, will be located two side casings at electric core length both ends again and install to electric core subassembly, because separate and do not have the location through the division board between per two adjacent electric cores, it is inhomogeneous to cause the clearance between per two adjacent electric cores, when the side casing needs to aim at the assembly with the utmost point post position of every electric core, the position of every electric core is finely tuned to the inevitable needs, thereby lead to the assembly step comparatively loaded down with trivial details, the assembly is comparatively time-consuming, and when the weight of electric core is heavier, the operation of finely tuning electric core position is still comparatively laborious. In addition, because set up the division board, not only make battery module's structure complicated, but also make battery module's assembly procedure loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery module, battery module is convenient for assemble.

According to the utility model discloses battery module, include: the battery cell assembly comprises a plurality of battery cells which are sequentially arranged along a first direction, at least one end of each battery cell in a second direction is provided with a pole, and the second direction is intersected with the first direction; the two bottom side shells are distributed at intervals along the second direction, each bottom side shell comprises a bottom plate part and a lower side plate part, the two bottom plate parts are respectively supported at two ends of the bottom of the electric core assembly, the two lower side plate parts are respectively arranged at two sides of the electric core assembly along the second direction, each bottom side shell is provided with a lower separation rib, and the lower separation ribs are used for separating two adjacent electric cores; the top limit shell, the top limit shell is two and follows the spaced apart distribution of second direction, every the top of end limit shell all is equipped with one the top limit shell, every the top limit shell all includes roof portion and upside board, two the roof portion covers respectively and establishes the top both ends of electric core subassembly, two the upside board is followed the second direction branch is put the both sides of electric core subassembly are located the homonymy the upside board with form between the downside board and dodge the district.

According to the utility model discloses battery module is through setting up bottom shell and topside shell into components of a whole to when the assembly, can utilize bottom shell simple, effective and swiftly to fix a position the installation to a plurality of electric cores earlier, reduce the assembly degree of difficulty, moreover, through separating the muscle under setting up on bottom shell, can save the division board among the correlation technique, thereby can simplify the structure, reduce cost simplifies the assembly step.

In some embodiments, each top side shell has an upper separation rib thereon, the upper separation rib is used for separating two adjacent battery cells, and the two top side shells have the same structure as at least one bottom side shell.

In some embodiments, each of the bottom cases further includes two lower connection portions, two of the lower connection portions of each of the bottom cases are respectively located at both sides of the cell assembly in the first direction, each of the top cases further includes two upper connection portions, two of the upper connection portions of each of the top cases are respectively located at both sides of the cell assembly in the first direction, and the battery module further includes: the panel, the panel is two and separately put the electric core subassembly is in both sides on the first direction, every the panel all with two of corresponding side go up connecting portion and two connecting portion link to each other down.

In some embodiments, the battery module further includes: the pull plates are arranged on the upper side and the lower side of the electric core assembly respectively, the two side edges in the second direction are correspondingly connected with the top side shells respectively, and each pull plate is arranged at two ends in the first direction and correspondingly connected with the panels on two sides respectively.

In some embodiments, the panel has a protrusion protruding away from the battery cell assembly, and the protrusion has a connection hole for connecting two battery modules adjacent to each other.

In some embodiments, the battery module has first electrode output and second electrode output, first electrode output and second electrode output are located the electric core subassembly is in same one end on the first direction, the end shell with the installation department has on at least one in the top shell, first electrode output with the second electrode output is fixed in same respectively first position and second position on the installation department.

In some embodiments, the lower edge of the upper panel portion has an upper cuff portion extending in the first direction, the upper edge of the lower panel portion has a lower cuff portion extending in the first direction, and the relief area is formed between the upper cuff portion and the lower cuff portion.

In some embodiments, at least one of the bottom side case and the top side case has a through hole thereon, and a side of the at least one of the bottom side case and the top side case, which is away from the electric core assembly, has a stopper structure, the battery module including: the connecting pieces are connected with the pole columns so as to enable the battery cores to be electrically connected; and the data acquisition line comprises an inner section part and an outer section part, the outer section part is penetrated by the through hole and positioned by the limiting structure, and the outer section part is provided with an acquisition end connected with the connecting sheet.

In some embodiments, the two ends of the battery cell in the second direction are provided with the terminals, the connecting pieces are distributed on two sides of the battery cell assembly in the second direction, the top edge shell is provided with the through holes and the limiting structures, the top of the battery cell assembly is provided with a wiring groove gasket, the inner section is arranged in a wiring groove defined by the wiring groove gasket, and the through holes are located in the central position of the top edge shell in the first direction.

In some embodiments, the top side shell has an upper shielding portion, the bottom side shell has a middle shielding portion and a lower shielding portion, at least one connecting piece on at least one side of the electric core assembly in the second direction is shielded between the upper shielding portion and the middle shielding portion along the vertical direction, at least one connecting piece is shielded between the middle shielding portion and the lower shielding portion along the vertical direction, the limiting structure is formed on the upper shielding portion, and the limiting structure comprises a wire clamping groove and/or a wire clamping buckle.

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

Drawings

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 2 is an exploded view of part of components of the battery module shown in fig. 1;

FIG. 3 is an inverted perspective view of one of the top edge shells shown in FIG. 1;

fig. 4 is an exploded view of part of components of the battery module shown in fig. 1;

FIG. 5 is an enlarged view at A shown in FIG. 1;

FIG. 6 is an enlarged view at B shown in FIG. 4;

FIG. 7 is an exploded view of one of the roof shells, raceway groove gaskets, and data collection lines shown in FIG. 1;

fig. 8 is an assembled rear view of the battery module shown in fig. 1;

FIG. 9 is a perspective view of one of the panels shown in FIG. 1;

fig. 10 is an assembled perspective view of the battery module shown in fig. 1;

fig. 11 is an assembly view of the plurality of battery module stacks shown in fig. 10;

FIG. 12 is an enlarged view at C shown in FIG. 11;

fig. 13 is a perspective view of a corner shell according to an embodiment of the present invention.

Reference numerals:

a battery module 100;

a first direction F1; a second direction F2; vertical direction F3;

an electric core assembly 1; a cell 11; a pole 12;

a bottom case 21; a bottom plate portion 211; a lower plate portion 212; a lower burring part 2121; a lower partition rib 213;

a lower connecting portion 214; a mounting portion 215; a first portion 2151; a second portion 2152;

a lower shielding portion 216; a middle shielding portion 217; a relief hole 20;

a top side shell 22; a top plate 221; an upper plate portion 222; an upper burring portion 2221; an upper partition rib 223;

an upper connecting portion 224; an upper shielding portion 225; a through-hole 226;

a limiting structure 227; a wire clip 2271; a wire clamping groove 2272; an avoidance slot 228;

corner cases 23; a limit plate 231; end panels 232; partition ribs 233; an avoidance zone 24;

a panel 3; a convex portion 31; a connecting hole 32; a connecting member 33; a pulling plate 4;

a first insulating pad 51; a second insulating pad 52; a wiring groove pad 53; a wiring groove 531;

a connecting sheet 6; a second electrode output 62; a first electrode output 61;

a data acquisition line 7; an inner stage portion 71; an outer section 72; a collection end 73; a signal output 74;

a housing 8; a removable cover plate 9.

Detailed Description

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

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, with reference to the drawings, a battery module 100 according to an embodiment of the first aspect of the present invention is described.

As shown in fig. 1, the battery module 100 may include: the electric core assembly 1, a bottom side shell 21 and a top side shell 22. Referring to fig. 2, the cell assembly 1 includes a plurality of cells 11 arranged in sequence along the first direction F1, and at least one end of each cell 11 in the second direction F2 has a terminal post 12, that is, the positive and negative terminals of each cell 11 may be located at the same end thereof in the second direction F2 (this example is not shown in the drawing), or the positive and negative terminals of each cell 11 may be located at both ends thereof in the second direction F2 (this example is shown in fig. 2). The second direction F2 intersects the first direction F1, that is, the second direction F2 has an included angle with the first direction F1, and the included angle is non-zero, or the second direction F2 is not the same as the first direction F1, for example, the second direction F2 and the first direction F1 are both perpendicular to the vertical direction F3, and the first direction F1 and the second direction F2 are perpendicular to each other, but not limited thereto, the first direction F1 and the second direction F2 may also intersect at an acute angle or an obtuse angle. In addition, it should be noted that "a plurality" as referred to herein means: greater than or equal to two.

As shown in fig. 2, the bottom cases 21 are two and distributed at intervals along the second direction F2, each bottom case 21 includes a bottom board portion 211 and a lower board portion 212, the two bottom board portions 211 are respectively supported at two ends of the bottom of the electric core assembly 1, the two lower board portions 212 are respectively disposed at two sides of the electric core assembly 1 along the second direction F2, each bottom case 21 has a lower partition rib 213 thereon, the lower partition rib 213 is used for partitioning two adjacent electric cores 11, the top case 22 is also two and distributed at intervals along the second direction F2, each bottom case 21 has a top case 22 disposed above, each top case 22 includes a top board portion 221 and an upper board portion 222, the two top board portions 221 are respectively covered at two ends of the top of the electric core assembly 1, the two upper board portions 222 are respectively disposed at two sides of the electric core assembly 1 along the second direction F2, an avoidance area 24 is formed between the upper board portion 222 and the lower board portion 212, the escape area 24 can be used to escape the pole 12 or other components on the respective side, such as at least part of the connecting tab 6 or the like, as described below.

Here, it is understood that the bottom side case 21 may be integrally structured, so that the bottom plate portion 211 and the lower plate portion 212 are an integral piece, and the top side case 22 may be integrally structured, so that the top plate portion 221 and the upper plate portion 222 are an integral piece. The top shell 22 and the bottom shell 21 are two separate parts and are not an integral piece, the two bottom shells 21 are two separate parts and are not an integral piece, and the two top shells 22 are also two separate parts and are not an integral piece.

From this, when the assembly, can place two bottom side shells 21 on the mount table earlier, then arrange two bottom side shells 21 along first direction F1 with a plurality of electric cores 11 in proper order, make per two electric cores 11 separate by separating muscle 213 down, later establish two top side shells 22 lid at electric core subassembly 1 two top dog-ears departments on second direction F2 again, thereby can be simple, effectively and swiftly fix a position the installation to a plurality of electric cores 11, reduce the assembly degree of difficulty, and can save the assemble duration. Moreover, by providing the lower partition rib 213, the partition plate used for cushioning between two adjacent electric cores 11 in the related art can be omitted, so that the structure can be simplified, the cost can be reduced, and the assembly steps can be further simplified.

And in the correlation technique, the battery module is when the assembly, after arranging a plurality of electric cores along the thickness direction of electric core usually, will be located two side casings at electric core length both ends again and install to electric core subassembly, because separate and do not have the location through the division board between per two adjacent electric cores, it is inhomogeneous to cause the clearance between per two adjacent electric cores, when the side casing needs to aim at the assembly with the utmost point post position of every electric core, the position of every electric core is finely tuned to the inevitable needs, thereby lead to the assembly step comparatively loaded down with trivial details, the assembly is comparatively time-consuming, and when the weight of electric core is heavier, the operation of finely tuning electric core position is still comparatively laborious. In addition, because set up the division board, not only make battery module's structure complicated, but also make battery module's assembly procedure loaded down with trivial details.

In addition, it should be noted that, because the top shell 22 is two separate parts and is not an integral part, when installing, the top shell 22 on one side can be installed first, and then the top shell 22 on the other side can be installed, so that the problem whether the two sides of the integrated top cover are aligned with the two sides of the cell assembly 1 respectively does not need to be considered, and the installation difficulty can be reduced. Moreover, since the top case 22 includes the top plate portion 221 and the upper side plate portion 222, on the one hand, the side edge of the core assembly 1 in the second direction F2 can be protected by the upper side plate portion 222 and the lower side plate portion 212, and also the top case 22 can be reliably hung on the core assembly 1 by the top plate portion 221 in the assembling process, so that positioning and holding of other components are avoided, and the assembling efficiency can be improved.

In addition, since the two bottom cases 21 for positioning are spaced apart in the second direction F2 initially during the assembly process, the surface of the pole 12 of the core assembly 1 is not disposed downward, so that the pole 12 can be protected, and the connection of the pole 12 to the later-described connecting piece 6 and the like is facilitated.

For example, in the example shown in fig. 2, the lower edge of the upper panel portion 222 has an upper cuff portion 2221 extending in the first direction F1, the upper edge of the lower panel portion 212 has a lower cuff portion 2121 extending in the first direction F1, and the escape area 24 is formed between the upper cuff portion 2221 and the lower cuff portion 2121. Therefore, the assembly is convenient, and the processing of the bottom side shell 21 and the top side shell 22 is convenient.

In some embodiments of the present invention, referring to fig. 3, fig. 3 is a perspective view of a top side shell 22 shown in fig. 1 after being turned over, each top side shell 22 has an upper separation rib 223 thereon, and the upper separation rib 223 is used for separating two adjacent electric cores 11. Thus, not only the two adjacent battery cells 11 can be separated from below by the lower separation rib 213, but also the two adjacent battery cells 11 can be separated from above by the upper separation rib 223, so that the stability of the distance between the two adjacent battery cells 11 can be improved. Moreover, when mounting, since the pitch of the plurality of battery cells 11 is already limited by the lower partition rib 213 on the bottom side case 21, each upper partition rib 223 on the top side case 22 can be easily inserted between two adjacent battery cells 11, so that the top side case 22 can be quickly mounted.

In addition, when the top side case 22 also has the upper partition rib 223, the two top side cases 22 may be configured to have the same structure as the at least one bottom side case 21. Therefore, the interchangeability is better, the production is more convenient, and the manufacturing cost is lower. For example, in the embodiment described later, one of the two bottom side cases 21 has the mounting portion 215, and the other of the two bottom side cases 21 does not have the mounting portion 215 and has the same structure as the top side case 22. That is, the two bottom cases 21 are different in structure, one of which has the mounting portion 215 and the other of which does not have the mounting portion 215, the two top cases 22 are identical in structure, and any one of the top cases 22 is identical in structure to the bottom case 21 which does not have the mounting portion 215. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the structures of the two top side shells 22 may also be different, and the structures of the two bottom side shells 21 may also be the same, and so on.

In some embodiments of the present invention, the lower separation rib 213 may be connected to the lower side plate portion 212 and the bottom plate portion 211, and the upper separation rib 223 may be connected to the top plate portion 221 and the upper side plate portion 222, respectively, so as to improve the reliability of separating two adjacent cells 11. In addition, in some embodiments of the present invention, the lower separating rib 213 may be integrated with the bottom side case 21, and the upper separating rib 223 may be integrated with the top side case 22, so that the production may be simplified. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the lower separation rib 213 may be connected to only one of the lower side plate portion 212 and the bottom plate portion 211, the upper separation rib 223 may be connected to only one of the top plate portion 221 and the upper side plate portion 222, and the lower separation rib 213 may be connected to the bottom side shell 21 and assembled as a separate component, and the upper separation rib 223 may be connected to the top side shell 22 and assembled as a separate component.

Further, it is understood that the number of the lower separation ribs 213 on each bottom side case 21 may be set according to the number of the battery cells 11, for example, the number of the lower separation ribs 213 on each bottom side case 21 may be set to be one less than the number of the battery cells 11, and when the number of the lower separation ribs 213 on each bottom side case 21 is plural, the plural lower separation ribs 213 on each bottom side case 21 are spaced apart in the first direction F1. Likewise, the number of the upper separation ribs 223 on each top side case 22 may be set according to the number of the battery cells 11, for example, the number of the upper separation ribs 223 on each top side case 22 may be set to be one less than the number of the battery cells 11, and when the number of the upper separation ribs 223 on each top side case 22 is plural, the plural upper separation ribs 223 on each top side case 22 are spaced apart in the first direction F1.

In some embodiments of the present invention, as shown in fig. 2, each bottom case 21 further includes two lower connection portions 214, the two lower connection portions 214 of each bottom case 21 are respectively located at both sides of the electric core assembly 1 in the first direction F1, that is, the two lower connection parts 214 are distributed on both sides of the electric core assembly 1 along the first direction F1, each top side case 22 further includes two upper connection parts 224, the two upper connection parts 224 in each top side case 22 are respectively located on both sides of the electric core assembly 1 in the first direction F1, i.e., the two upper connection parts 224 are distributed at both sides of the electric core assembly 1 in the first direction F1, the battery module 100 further includes two face plates 3, the face plates 3 are disposed at both sides of the electric core assembly 1 in the first direction F1, that is, two face plates 3 are distributed on both sides of the electric core assembly 1 along the first direction F1, and each face plate 3 is connected to two upper connection parts 224 and two lower connection parts 214 of the corresponding side.

Thus, when assembling the cell assembly 1 and the bottom case 21, the cell assembly 1 can be positioned in the first direction F1 by the lower connection part 214, and after assembling the top case 22, the cell assembly 1 can be positioned in the first direction F1 by the upper connection part 224, so that the assembling reliability of the battery module 100 can be improved. Moreover, through setting up connecting portion 224 and lower connecting portion 214, can also make roof side shell 22 and base side shell 21 link to each other with the panel 3 of both sides respectively to play the effect of tightening electric core subassembly 1, simultaneously, panel 3 can also play the effect of protection electric core subassembly 1.

In some embodiments of the present invention, as shown in fig. 4, the battery module 100 may further include two pull plates 4, the two pull plates 4 are spaced apart from each other along the vertical direction F3 to be disposed on the upper and lower sides of the electric core assembly 1, the two side edges of the pull plate 4 in the second direction F2 are respectively connected to the two top side shells 22, and the two ends of each pull plate 4 in the first direction F1 are respectively connected to the panels 3 on the two sides. From this, can tighten electric core subassembly 1 simply effectively, and can replace lacing wire strip and upper and lower apron among the correlation technique with arm-tie 4 to reduce the assembly degree of difficulty, improved assembly efficiency, and simplified the structure, the cost is reduced. Meanwhile, the pulling plate 4 can also play a role in protecting the electric core assembly 1.

In some embodiments of the present invention, as shown in fig. 2 and 4, the panel 3 and the pulling plate 4 are metal members, the battery module 100 further includes a first insulating pad 51 and a second insulating pad 52, the first insulating pad 51 is disposed between the panel 3 and the cell assembly 1, and the second insulating pad 52 is disposed between the pulling plate 4 and the cell assembly 1. Therefore, the tightening and protection reliability of the panel 3 and the pulling plate 4 on the electric core assembly 1 can be ensured, and the problem that a metal piece is directly contacted with the electric core 11 to cause short circuit can be avoided.

The utility model discloses an in some embodiments, can be provided with some ribbings on the panel 3 to not only can improve panel 3's intensity, can reduce panel 3 and electric core subassembly 1's indirect area of contact moreover, equally, also can be provided with some ribbings on the arm-tie 4, thereby not only can improve arm-tie 4's intensity, can reduce arm-tie 4 and electric core subassembly 1's indirect area of contact moreover. Thus, the first insulating pad 51 and the second insulating pad 52 can be provided in a structure of discrete plural pieces or more, thereby reducing weight and cost.

In addition, it should be noted that the connection manner of the bottom side shell 21 and the top side shell 22 to the panel 3 is not limited, and for example, the bottom side shell and the top side shell may be connected by a threaded connection; the panel 3 and the pulling plate 4 can be assembled in any way, for example, by connecting them by a threaded connection; the assembly manner of the bottom shell 21 and the top shell 22 with the pull plate 4 is not limited, and for example, the bottom shell and the top shell may be connected by a snap structure, etc., which will not be described herein.

In some embodiments of the present invention, as shown in fig. 5 and 6, the battery module 100 has a first electrode output end 61 and a second electrode output end 62, the first electrode output end 61 and the second electrode output end 62 are located at the same end of the battery pack assembly 1 in the first direction F1, the mounting portion 215 is provided on at least one of the bottom side shell 21 and the top side shell 22, the first electrode output end 61 and the second electrode output end 62 are respectively fixed at a first position 2151 and a second position 2152 on the same mounting portion 215, that is, the first electrode output end 61 is fixed at a first position 2151 on the mounting portion 215, and the first electrode output end 61 is fixed at a second position 2152 on the mounting portion 215. Therefore, the installation is convenient.

For example, in the specific example shown in fig. 5 and 6, the battery module 100 may further include a plurality of connecting pieces 6, and the connecting pieces 6 are connected with the poles 12 to electrically connect the plurality of battery cells 11, for example, to connect the plurality of battery cells 11 in series and/or in parallel. One end of one bottom side shell 21 is provided with a mounting part 215, the first electrode output end 61 is extended to one side of the electric core assembly 1 in the first direction F1 by one connecting piece 6, the second electrode output end 62 is extended to the one side of the electric core assembly 1 in the first direction F1 by another connecting piece 6, one of the first electrode output end 61 and the second electrode output end 62 serves as an output positive electrode, the other serves as an output negative electrode, and the first electrode output end 61 and the second electrode output end 62 are located on the same side of the electric core assembly 1 in the first direction F1 and are connected to the same mounting part 215.

That is to say, after a plurality of electric cores 11 are established ties and/or are parallelly connected through a plurality of connection pieces 6, positive negative pole output is in electric core subassembly 1 same one side on first direction F1, and is fixed by an installation department 215 on the limit shell 21 of a end to after arranging a plurality of electric cores 11 on limit shell 21 of an end, can direct mount connection piece 6, thereby easy to assemble, of course, the utility model discloses an assembly order of battery module 100 is not limited to this. In addition, in order to protect the first electrode output terminal 61 and the second electrode output terminal 62, a detachable cover plate 9 or the like may be provided at the mounting portion 215, which will not be described herein. Of course, the present invention is not limited thereto, and the first electrode output end 61 and the second electrode output end 62 may be assembled with the connecting sheet 6 instead of extending from the connecting sheet 6.

In some embodiments of the present invention, as shown in fig. 5 and 6, the top side case 22 has an upper shielding portion 225, the bottom side case 21 has a middle shielding portion 217 and a lower shielding portion 216, at least one connecting piece 6 of at least one side of the core assembly 1 in the second direction F2 is shielded between the upper shielding portion 225 and the middle shielding portion 217 in the vertical direction F3, and at least one connecting piece 6 is sheltered between the middle shelter portion 217 and the lower shelter portion 216 along the vertical direction F3, that is, the connecting piece 6 is arranged on the upper side and the lower side of the middle shelter portion 217 of the cell module 1 in at least one side of the second direction F2, the connecting piece 6 above the middle shelter portion 217 is sheltered by the upper shelter portion 225 when viewed from the top to the bottom, and the connecting piece 6 below the middle shelter portion 217 is sheltered by the lower shelter portion 216 when viewed from the bottom to the top, so that the connecting piece 6 can be effectively protected from being damaged by collision in the vertical direction.

In some specific examples, as shown in fig. 5, the upper shielding portion 225 may be used as the upper burring portion 2221, that is, the upper shielding portion 225 is the same as the upper burring portion 2221, and the middle shielding portion 217 may be used as the lower burring portion 2121, that is, the middle shielding portion 217 is the same as the lower burring portion 2121, so that the structures of the top shell 22 and the bottom shell 21 can be simplified, and the processing can be simplified. Of course, the present invention is not limited thereto, and the upper shielding portion 225 and the upper burring portion 2221 may be formed on the top side shell 22 separately by two different structures, and the middle shielding portion 217 and the lower burring portion 2121 may be formed on the bottom side shell 21 separately by two different structures.

In some embodiments of the present invention, as shown in fig. 4, in order to further protect the plurality of connecting pieces 6, shells 8 may be respectively disposed on both sides of the cell assembly 1 in the second direction F2, and the shells 8 are located on one side of the connecting pieces 6 away from the cell assembly 1, so that the cell assembly 1 and the connecting pieces 6 can be effectively protected. In addition, it should be noted that the fixing manner of the outer shell 8 is not limited, for example, in the example shown in fig. 4, the outer shell 8 may be fixed with the bottom shell 21 and the top shell 22 of the corresponding side through a snap structure.

In some embodiments of the present invention, as shown in fig. 6 and 7, at least one of the bottom side shell 21 and the top side shell 22 has a through hole 226, one side of at least one of the bottom side shell 21 and the top side shell 22, which is far away from the core assembly 1, has a limit structure 227, the battery module 100 further includes a data acquisition line 7, the data acquisition line 7 includes an inner section portion 71 and an outer section portion 72, the outer section portion 72 is penetrated by the through hole 226 and is positioned by the limit structure 227, the outer section portion 72 has an acquisition end 73 connected to the connecting piece 6, so that data acquisition can be performed on the connecting piece 6 through the data acquisition end 73, it can be understood that the data acquisition line 7 is connected to the battery management system, so as to monitor the operation state of each electrical core 11 in real time by using the battery management system when the battery module 100 is in use.

Therefore, the through hole 226 and the limiting structure 227 are arranged on at least one of the bottom side shell 21 and the top side shell 22 for assembling the data collection line 7, so that the inner section part 71 of the data collection line 7 can be accommodated in the shell of the battery module 100 (for example, between the pull plate 4 and the electric core assembly 1), thereby greatly avoiding the data collection line 7 from being damaged by external force such as extrusion and tearing, and ensuring the safety and reliability of data transmission of the battery module 100. However, the data collection lines 7 in the related art are mostly disposed outside the case of the battery module 100, and are easily damaged, and the reliability of data transmission is not high.

In some embodiments of the present invention, the two ends of the battery cell 11 in the second direction F2 all have the terminal 12, that is, the positive terminal and the negative terminal of each battery cell 11 are respectively located at the two ends of the battery cell assembly in the second direction F2, the connecting pieces 6 are distributed on the two sides of the battery cell assembly 1 in the second direction F2, that is, the connecting pieces 6 are distributed on the two sides of the battery cell assembly 1 in the second direction F2, so that the terminals 12 on the two sides of the battery cell assembly 1 in the second direction F2 can be connected by the connecting pieces 6, so that the battery cells 11 can be connected in series and/or in parallel. As shown in fig. 6 and 7, the top shell 22 has a through hole 226 and a limiting structure 227, the top of the cable assembly 1 has a cabling slot gasket 53, and in conjunction with fig. 4 and 5, the inner section 71 of the data collecting wire 7 is arranged in a cabling slot 531 defined by the cabling slot gasket 53, so that the data collecting wire 7 and the cable assembly 1 can be spaced by the cabling slot gasket 53, and the data collecting wire 7 can be ensured to pass through safely and reliably.

Thus, during assembly, one end of the data collection wire 7 can be inserted into the top case 22 through the through hole 226 on the top case 22 on one side, then extended to the other side of the core assembly 1 in the second direction F2 through the wiring duct gasket 53, and then extended out of the top case 22 through the through hole 226 on the top case 22 on the other side, and then connected to the connecting piece 6 through the collection end 73 in multiple strands, and referring to fig. 8, the other end of the data collection wire 7 is also connected to the connecting piece 6 through the collection end 73 in multiple strands.

In some embodiments of the present invention, as shown in fig. 8, the perforation 226 may be located in the center of the roof shell 22 in the first direction F1. Therefore, the length of the data acquisition line 7 can be shortest, materials are saved, cost is reduced, and wiring is convenient. Furthermore, in some embodiments of the present invention, the wiring groove gasket 53 may be an insulating gasket, so as to further avoid the direct contact between the data collection line 7 and the battery cell 11, avoid the short circuit problem, and ensure the safety and reliability of signal transmission.

It should be noted that the specific structure and the installation position of the limiting structure 227 are not limited as long as the data acquisition line 7 can be reliably limited and the data acquisition line 7 and the connecting sheet 6 can be reliably connected. For example, in the example shown in fig. 7, when the top case 22 has the upper shielding portion 225, and when the top case 22 has the through hole 226 and the limiting structure 227, the limiting structure 227 may be formed on the upper shielding portion 225 and include the wire-clamping groove 2272 and the wire-clamping buckle 2271, so that when the data acquisition wire 7 passes through the through hole 226, the data acquisition wire may be firstly straightened along the first direction F1 by the wire-clamping buckle 2271, and then be divided into a plurality of strands, which are respectively clamped in the wire-clamping groove 2272, so that the acquisition end 73 is connected to the connecting piece 6.

Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the limiting structure 227 may further include only one of the wire-clamping groove 2272 and the wire-clamping buckle 2271. It should be noted that the number of the collection ends 73 on the data collection line 7 is well known to those skilled in the art and will not be described herein. In addition, as shown in fig. 6, the top shell 22 may also have an escape slot 228 for allowing the signal output terminal 74 of the data collection line 7 to protrude.

In some embodiments of the present invention, as shown in fig. 2, the two top side shells 22 have the same structure and the same structure as the at least one bottom side shell 21. For example, in some embodiments, one of the two bottom shells 21 has a mounting portion 215, and the other of the two bottom shells 21 does not have a mounting portion 215 and is identical in construction to the top shell 22. That is, the two bottom cases 21 are different in structure, one of which has the mounting portion 215 and the other of which does not have the mounting portion 215, the two top cases 22 are identical in structure, and any one of the top cases 22 is identical in structure to the bottom case 21 which does not have the mounting portion 215.

Thus, the battery module 100 requires only two types of side cases, one of which requires three side cases as two top side cases 22 and one bottom side case 21, and the other of which requires one side case as the other bottom side case 21. Therefore, the interchangeability is better, the production is more convenient, and the manufacturing cost is lower. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the structures of the two top side shells 22 may also be different, and the structures of the two bottom side shells 21 may also be the same, for example, all have the installation portion 215, and the details are not described here.

In addition, referring to fig. 7 and 8, the top side shell 22 and the bottom side shell 21 are both provided with the avoiding hole 20, so that on one hand, the avoiding hole 20 can be used to observe the positive and negative marks on the battery cell 11, and on the other hand, the avoiding hole 20 can be used to avoid the pressure relief device on the battery cell 11, so as to ensure that the pressure relief device on the battery cell 11 can work normally. In addition, as the top side shell 22 and the bottom side shell 21 are both provided with the avoidance holes 20, when the top side shell 22 and the bottom side shell 21 are side shells with the same structure type, the interchange requirement can be met.

In some embodiments of the present invention, as shown in fig. 9 and 10, the panel 3 has a convex portion 31 protruding toward a direction away from the electric core assembly 1, the convex portion 31 has a connection hole 32, and in combination with fig. 11 and 12, the connection hole 32 is used to connect two battery modules 100 adjacent to each other up and down, that is, the two battery modules 100 adjacent to each other up and down are suitable for being connected through a connection member 33 at least partially penetrating through the connection hole 32, for example, in the example shown in fig. 12, the connection member 33 may be a bolt and a nut, and for example, the connection member 33 may also be a rivet, a screw, a cord, or the like, which is not described in detail. Therefore, the stacking, placing and using of the plurality of battery modules 100 can be simply and effectively realized, so that a battery bracket is omitted, and the placing space is saved. The number of stacked layers is not limited, and may be, for example, 2 to 8 layers, and the like, and is not limited here.

As shown in fig. 13, the utility model also provides a corner shell 2A for battery module 100, battery module 100 includes electric core assembly 1, and electric core assembly 1 includes a plurality of electric cores 11 of arranging in proper order along first direction F1, and corner shell 23 includes: two limiting plates 231, two end panels 232 and at least one partition muscle 233, two limiting plates 231 all extend and mutually perpendicular set up along first direction F1, so that inject right angle space 230 between two limiting plates 231, two end panels 232 connect respectively at two limiting plates 231 both ends on first direction F1, and two limiting plates 231 of every end panel 232 equal perpendicular to set up, partition muscle 233 just locates in right angle space 230 for at least one, separate muscle 233 and two limiting plates 231 and link to each other respectively, corner shell 23 is suitable for establishing the dog-ear position at electric core subassembly 1, and separate muscle 233 and be suitable for separating two adjacent electric cores 11.

Thus, the corner shell 23 according to the embodiment of the present invention can be used as the bottom shell 21 of at least some of the above embodiments, and can also be used as the top shell 22 of at least some of the above embodiments, and more specifically, two limiting plates 231 can be used as the bottom plate portion 211 and the lower side plate portion 212 in the bottom shell 21, and two limiting plates 231 can be used as the top plate portion 221 and the upper side plate portion 222 in the top shell 22. Two end plates 232 may be used as the two lower connecting portions 214 in the bottom case 21, and two end plates 232 may be used as the two upper connecting portions 224 in the top case 22. The partition rib 233 may be used as the lower partition rib 213 in the bottom case 21, or the partition rib 233 may be used as the upper partition rib 223 in the top case 22.

Thus, referring to the above description, the corner case 23 may improve the assembly efficiency of the battery module 100, simplifying the structure of the battery module 100. Furthermore, according to the utility model discloses other optional structures of angle limit shell 23 can refer to above-mentioned, for example angle limit shell 23 can also set up above-mentioned installation department, occlusion part, dodge the hole, perforate, limit structure and dodge the groove etc. and do not describe here any more.

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

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

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

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery module, comprising:

the battery cell assembly comprises a plurality of battery cells which are sequentially arranged along a first direction, at least one end of each battery cell in a second direction is provided with a pole, and the second direction is intersected with the first direction;

the two bottom side shells are distributed at intervals along the second direction, each bottom side shell comprises a bottom plate part and a lower side plate part, the two bottom plate parts are respectively supported at two ends of the bottom of the electric core assembly, the two lower side plate parts are respectively arranged at two sides of the electric core assembly along the second direction, each bottom side shell is provided with a lower separation rib, and the lower separation ribs are used for separating two adjacent electric cores;

the top limit shell, the top limit shell is two and follows the spaced apart distribution of second direction, every the top of end limit shell all is equipped with one the top limit shell, every the top limit shell all includes roof portion and upside board, two the roof portion covers respectively and establishes the top both ends of electric core subassembly, two the upside board is followed the second direction branch is put the both sides of electric core subassembly are located the homonymy the upside board with form between the downside board and dodge the district.

2. The battery module according to claim 1, wherein each top side shell is provided with an upper separation rib, the upper separation rib is used for separating two adjacent battery cells, and the two top side shells have the same structure and are the same as the structure of at least one bottom side shell.

3. The battery module according to claim 1, wherein each of the bottom cases further includes two lower connection portions, the two lower connection portions in each of the bottom cases are respectively located on both sides of the cell assembly in the first direction, each of the top cases further includes two upper connection portions, the two upper connection portions in each of the top cases are respectively located on both sides of the cell assembly in the first direction, the battery module further comprising:

the panel, the panel is two and separately put the electric core subassembly is in both sides on the first direction, every the panel all with two of corresponding side go up connecting portion and two connecting portion link to each other down.

4. The battery module according to claim 3, further comprising:

the pull plates are arranged on the upper side and the lower side of the electric core assembly respectively, the two side edges in the second direction are correspondingly connected with the top side shells respectively, and each pull plate is arranged at two ends in the first direction and correspondingly connected with the panels on two sides respectively.

5. The battery module according to claim 3, wherein the face plate has a protrusion protruding away from the electric core assembly, and the protrusion has a coupling hole for coupling two battery modules adjacent to each other up and down.

6. The battery module of claim 1, wherein the battery module has a first electrode output and a second electrode output, the first electrode output and the second electrode output are located at the same end of the battery cell assembly in the first direction, at least one of the bottom side shell and the top side shell has an installation portion thereon, and the first electrode output and the second electrode output are respectively fixed at the same first location and second location on the installation portion.

7. The battery module according to claim 1, wherein the lower edge of the upper side plate portion has an upper burring portion that extends in the first direction, the upper edge of the lower side plate portion has a lower burring portion that extends in the first direction, and the relief area is formed between the upper burring portion and the lower burring portion.

8. The battery module according to any one of claims 1 to 7, wherein at least one of the bottom side case and the top side case has a through-hole formed therein, and a side of the at least one of the bottom side case and the top side case, which is away from the cell assembly, has a stopper structure, the battery module comprising:

the connecting pieces are connected with the pole columns so as to enable the battery cores to be electrically connected; and

the data acquisition line, the data acquisition line includes interior section portion and outer section portion, outer section portion by the perforation passes and by limit structure fixes a position, have in the outer section portion with the collection end that the connection piece links to each other.

9. The battery module according to claim 8, wherein the terminal posts are disposed at two ends of the battery core in the second direction, the connecting pieces are distributed at two sides of the battery core assembly in the second direction, the top shell has the through holes and the limiting structures, the top of the battery core assembly has a wiring groove gasket, the inner section is disposed in a wiring groove defined by the wiring groove gasket, and the through holes are located at a central position of the top shell in the first direction.

10. The battery module according to claim 8, wherein the top side case has an upper shielding portion, the bottom side case has a middle shielding portion and a lower shielding portion, at least one connecting piece of at least one side of the battery pack assembly in the second direction is vertically shielded between the upper shielding portion and the middle shielding portion, at least one connecting piece is vertically shielded between the middle shielding portion and the lower shielding portion, the upper shielding portion is formed with the limiting structure, and the limiting structure comprises a wire clamping groove and/or a wire clamping buckle.

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