CN215451597U

CN215451597U - Enclose frame and battery package

Info

Publication number: CN215451597U
Application number: CN202121238613.0U
Authority: CN
Inventors: 陈斌斌; 王华文; 席兵荣; 花黄伟
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-03-18
Filing date: 2021-06-03
Publication date: 2022-01-07
Anticipated expiration: 2031-06-03
Also published as: CN215451596U; WO2022193790A1; WO2022193793A1; CN113540636A; CN215451595U; CN113540635A; WO2022193791A1

Abstract

The utility model relates to the technical field of batteries, a enclose frame and battery package is disclosed, enclose mounting panel and a plurality of busbar that the frame includes a pair of symmetry setting, the space that is used for setting up battery cell has between the mounting panel, the busbar is as an organic whole with the mounting panel shaping, a utmost point post electricity with battery cell is connected, therefore, the electrical isolation board who is used for setting up the busbar in the conventional battery package has been saved, the simplification of battery package inner structure has been realized, thereby simplify the assembly, and, the reduction of structure can provide more box internally mounted spaces, help improving the inner space utilization, thereby improve battery volume energy density. The battery pack with the enclosure frame also has the advantages.

Description

Enclose frame and battery package

Technical Field

The utility model relates to the technical field of batteries, in particular to an enclosure frame and a battery pack.

Background

The power battery is used as a main power source of the electric automobile, how to efficiently utilize the limited space and improve the energy density is a key for meeting the long-term endurance requirement of the new energy electric automobile. At present, most of power batteries form a module by a plurality of single batteries, then the plurality of modules are placed into a battery box to form a battery pack, in the module, the common single batteries are usually welded through a bus bar, the bus bar is fixed through an electric isolation plate arranged above an electric core, and the module needs to be provided with an end plate to pre-tighten the single batteries.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides an enclose frame, can simplify battery package inner structure, effectively improves the inner space utilization of battery box to improve the long-pending energy density of battery inclusion.

The application also provides a battery pack comprising the enclosure frame.

The enclosure according to the embodiment of the first aspect of the application comprises:

the battery pack comprises a pair of symmetrically arranged mounting plates, a plurality of battery packs and a plurality of battery packs, wherein the mounting plates are used for positioning a plurality of single batteries arranged in rows in the battery pack;

a plurality of busbars, each of which is integrated with the mounting plate into a whole and is used for being electrically connected with the pole of the single battery

The enclosure frame of the embodiment of the first aspect of the application has at least the following beneficial effects: the space between the mounting panels is used for placing the single batteries, and the busbar is arranged on the mounting panels, so that the electrical isolation plate is omitted, the simplification of the internal structure of the battery pack is realized, the assembly procedures of the busbar during the assembly of the battery pack are reduced, the assembly is simplified, more internal mounting spaces of the box body can be provided due to the reduction of the structural parts, the utilization rate of the internal space is improved, and the energy density of the battery volume is improved.

According to some embodiments of the present application, a portion or the entirety of the bus bar is built in the mounting plate and located above the unit cells.

According to some embodiments of the present application, one end of the bus bar is built in the mounting plate, and the other end extends toward an inner side of the mounting plate, the other end being located above the unit cells.

According to some embodiments of the application, the mounting panel includes the plate body and corresponds to the first mount table that the position of cell's top set up, first mount table certainly the inner wall of plate body is inwards protruding, place in the one end of busbar the inside of first mount table, the other end orientation the inboard of plate body extends, the other end can be located cell's top.

According to some embodiments of the present application, the mounting plate includes a plate body and a second mounting platform disposed at a position corresponding to the top of the single battery, the second mounting platform extends inward from the inner wall of the plate body to be capable of being located above the single battery, the busbar is integrally disposed inside the second mounting platform, a connecting hole is formed in one side of the second mounting platform facing the single battery, and the connecting hole penetrates through the surface of the busbar; through the connection hole, the busbar can be electrically connected with the pole of the single battery.

According to some embodiments of the present application, a plurality of slots are formed between the mounting plates along the arrangement direction of the single batteries, and each slot is used for placing the single battery.

According to some embodiments of the application, be provided with a plurality of parting beads on the mounting panel, the parting bead is followed the direction interval of arranging of battery cell set up in one side of the mutual orientation of mounting panel, inject the recess between the parting bead, two the mounting panel the recess is constituteed the slot.

According to some embodiments of the application, the mutual one side that faces of mounting panel still is provided with the collet, the collet is located keeping away from of parting bead the one end of busbar is used for the bearing to arrange in the slot the bottom of battery cell.

According to the battery pack of the embodiment of the second aspect of the present application, comprising:

a single battery;

in the enclosure frame according to the embodiment of the first aspect of the present application, the single batteries are arranged in rows between the mounting plates, and each bus bar is electrically connected to the corresponding single battery;

the box, including lower box and case lid, the box has the installation cavity down, enclose the frame with battery cell arranges in the installation cavity, the case lid closing cap in the upper portion of installation cavity.

The battery pack of the embodiment of the second aspect of the present application has at least the following beneficial effects: the battery cell sets up between the mounting panel that encloses the frame, encloses the frame and sets up in the installation cavity of box, realizes battery cell's fixed and transmission of power through enclosing being connected of frame and box, has saved the end plate and the side boxboard of traditional battery package from this to the busbar sets up on enclosing the frame, has saved electrical isolation board, consequently, has realized the structure simplification of battery package, thereby the simplification assembly. In addition, the reduction of the structural part can provide more internal installation spaces of the box body, and the utilization rate of the internal space is improved, so that the volume energy density of the battery is improved.

Additional aspects and advantages of the present application 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 present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application;

fig. 2 is an exploded view of a portion of the battery pack of the embodiment shown in fig. 1;

fig. 3 is a schematic cross-sectional view of a battery pack according to an embodiment of the present application, taken perpendicular to the arrangement direction of unit cells;

FIG. 4 is a schematic diagram of a cell and a frame in the battery pack of the embodiment shown in FIG. 1;

FIG. 5 is a schematic structural diagram of a frame according to an embodiment of the present application;

FIG. 6 is an enlarged view of a portion of FIG. 5 at I;

FIG. 7 is a sectional view taken along line A-A of FIG. 6;

FIG. 8 is a cross-sectional view of a mounting plate different from that of FIG. 7;

FIG. 9 is a cross-sectional view of another mounting plate different from FIG. 7;

FIG. 10 is a cross-sectional view of another mounting plate different from FIG. 7;

FIG. 11 is a cross-sectional view of another mounting plate different from FIG. 7.

Reference numerals:

a cell 100, a cell top 120, a cell bottom 130, a cell side 140;

the frame comprises a surrounding frame 200, slots 210, busbars 220, mounting plates 230, plate bodies 231, partition bars 232, a bottom support 233, a first mounting platform 234, a second mounting platform 236, a groove 237, a connecting hole 239, a board inserting slot 240, a connecting plate 250, an insulating inserting board 260 and a blocking shoulder 270;

the box body 300, the box cover 310, the lower box body 320, the bottom plate 321, the side box plate 322, the flow channel 323, the installation cavity 330, the sealing element 340 and the positioning table 350;

data acquisition system 400, battery control unit 500, distribution box 600, connector 700.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, several means are one or more, and the above, below, within and the like are understood to include the present numbers. The description to first, second, etc. is only for the purpose of distinguishing technical features, and should not be interpreted as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means 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 present application. In this specification, the schematic representations of the terms used above do not necessarily 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.

At present, the composition structure of most power batteries is mainly as follows: bear the weight of battery cell through electric core frame to a plurality of battery cells constitute the electric core group, make up a plurality of electric core groups into electric core module again, connect the end plate at electric core module both ends, both sides set up the side boxboard, in order to realize the load, electric core module top sets up electric division board, the busbar sets up on electric division board and connects the pencil, the upper cover closing cap is in electric division board upper portion and connect in end plate, side boxboard etc. from this constitution battery package. The internal components of the battery box are various, the assembly is complex, the battery box also occupies a large internal space of the battery box, the volume space utilization rate is low, the optimized space is small, and the difficulty is high. Compared with the mode, the battery pack provided by the embodiment of the application adopts the structure that the single batteries directly form the battery pack (CTP), and provides the enclosing frame for positioning the single batteries, so that some structural parts can be omitted, more internal installation spaces are released for installing the single batteries, the utilization rate of the internal space is improved, or the size of the battery is reduced, the assembly is simplified, and the cost can be reduced to a certain extent.

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application, fig. 2 is a schematic exploded view of a portion of the battery pack according to the embodiment shown in fig. 1, fig. 4 is a schematic structural view of a surrounding frame and a single battery according to the embodiment of the present application, and referring to fig. 1 to 4, the battery pack according to the embodiment of the present application includes a case 300, a surrounding frame 200, and a plurality of single batteries 100.

The enclosure frame 200 is provided with a bus bar 220 at a position corresponding to each of the unit batteries 100, and the bus bar 220 is electrically connected to the unit batteries 100.

The case 300 includes a lower case 320 and a case cover 310, the lower case 320 includes a side case plate 322 and a bottom plate 321, the side case plate 322 and the bottom plate 321 enclose a mounting cavity 330, the enclosure frame 200 and the single batteries 100 are disposed in the mounting cavity 330, and each single battery 100 is connected to the bottom plate 321, and the case cover 310 covers the upper portion of the mounting cavity 330 and is detachably connected to the side case plate 322.

From this, through enclosing frame 200 and the transmission of the fixed of the monomer battery 100 of being connected realization and power of box 300, saved the end plate and the curb plate of traditional battery package to busbar 220 sets up on enclosing frame 200, has saved electrical isolation board, consequently, has realized the structure simplification of battery package, thereby simplify the assembly, and, the reduction of structure can provide more box inner space installation spaces, helps improving the inner space utilization ratio, thereby improves battery volume energy density.

Referring to fig. 4, the embodiment of the present application provides an enclosure frame, which includes a pair of symmetrically disposed mounting plates 230 and a plurality of busbars 220, the mounting plates 230 are used for positioning a plurality of single batteries 100 arranged in a row in a battery pack, and the mounting plates 230 are disposed at intervals, so that a space for disposing the single batteries 100 is formed between the mounting plates 230, and therefore the single batteries 100 can be disposed in the space between the mounting plates 230 in a row, thereby achieving positioning of two sides of the single batteries 100. The bus bars 220 are respectively used to be electrically connected to the poles of the respective unit batteries 100, and the respective bus bars 220 are integrally molded with the mounting plate 230, whereby, when the battery pack is assembled, the mounting process of the bus bars 220 can be omitted to simplify the assembly, and, compared with the scheme in which the bus bars are mounted through the electrical isolation plate in the conventional battery pack, the electrical isolation plate can be omitted to simplify the internal structure of the battery pack.

In the above embodiment, the bus bar and the mounting plate are integrally molded, and a part or the whole of the bus bar is embedded in the mounting plate and located above the single batteries, thereby facilitating electrical connection with the poles on the top of the single batteries.

Fig. 5 is a schematic structural view of a peripheral frame according to an embodiment of the present invention, fig. 6 is a partial enlarged view of a portion I in fig. 5, fig. 7 is a sectional view taken along a-a in fig. 6, and referring to fig. 5 to 7, a peripheral frame 200 according to an embodiment of the present invention includes two symmetrically disposed mounting plates 230, each mounting plate 230 includes a plate body 231 and a first mounting boss 234 disposed corresponding to a top 120 of a unit cell, the first mounting boss 234 protrudes inward from an inner wall of the plate body 231, one end of a busbar 220 is disposed inside the first mounting boss 234, so that the busbar 220 is fixed, and the first mounting boss 234 can limit the top of the unit cell 100. The other end of the bus bar 220 extends toward the inside of the plate 231 and can be located above the unit cells. Specifically, one end of the bus bar 220 may be embedded in the first mounting platform 234 of the mounting plate 230, for example, a jack is provided at a position of the first mounting platform 234 of the mounting plate 230 corresponding to each battery cell 100, and one end of the bus bar 220 is inserted into the jack and is fixedly connected to the mounting plate 230 by a conventional process such as rivet welding, super welding, etc.; alternatively, one end of the bus bar 220 may be integrally formed with the first mounting platform 234 of the mounting plate 230 by a conventional process such as die casting, injection molding, etc. so as to be fixed inside the material of the first mounting platform 234 of the mounting plate 230, and the other end extends toward the inner side of the mounting plate 230 to be located above the single battery 100, thereby facilitating electrical connection with the pole of the single battery 100.

Referring to fig. 8 and 10, in some other embodiments, the mounting plate 230 may not be provided with the first mounting platform 234, and one end of the bus bar 220 is embedded in the mounting plate 230, and the other end extends toward the inner side of the mounting plate 230, and the other end is located above the unit battery 100. Specifically, one end of the bus bar 220 may be embedded in the mounting plate 230, for example, a jack is provided at a position corresponding to the top of each battery cell 100 on the inner side of the mounting plate 230, and one end of the bus bar 220 is inserted into the jack and fixedly connected to the mounting plate 230 by a conventional process such as rivet welding or super welding; alternatively, one end of the bus bar 220 may be integrally formed with the mounting plate 230 through a conventional process such as die casting or injection molding, so as to be fixed inside the material of the mounting plate 230, and the other end extends to the inside of the mounting plate 230 to be located above the single battery 100, so as to be electrically connected to the pole of the single battery 100.

Referring to fig. 11, in some other embodiments, the mounting plate 230 may include a plate body 231 and a second mounting table 236 disposed at a position corresponding to the top of the unit battery 100, the second mounting table 236 and the plate body 231 are integrally formed and extend inward from an inner wall of the plate body 231 to be capable of being located above the unit battery 100, the bus bar 220 is integrally disposed inside the second mounting table 236, a connecting hole 239 is opened at a side of the second mounting table 236 facing the unit battery 100, and the connecting hole 239 penetrates through a surface of the bus bar 220; the bus bar 220 can be electrically connected with the poles of the unit batteries 100 through the connection holes 239. One end of the bus bar 220 may be integrally formed with the second mounting block 236 of the mounting plate 230 by a conventional process such as die casting, injection molding, or the like.

As can be seen from the above embodiments, in the enclosure frame 200 of the embodiment of the present application, the space between the mounting plates 230 is used for placing the single batteries 100, and the bus bars 220 are integrally formed with the mounting plates 230, so that compared with a conventional battery pack, an electrical isolation plate is omitted, thereby simplifying the internal structure of the battery pack, reducing the assembly process of the bus bars 220 during the assembly of the battery pack, and simplifying the assembly and reducing the cost. In addition, the reduction of the structural part can provide more internal installation spaces of the box body, and the utilization rate of the internal space is improved, so that the volume energy density of the battery is improved.

In the above embodiment, referring to fig. 4, a plurality of slots 210 may be disposed in a row between the mounting plates 230 of the enclosure frame 200, each slot 210 is used for placing a single battery 100, so that positioning and mounting of the single battery 100 are achieved, and a fixing frame of each single battery does not need to be additionally disposed. Therefore, after the enclosure frame 200 and the single batteries 100 are assembled, the mounting plate 230 can position the single batteries 100, the bus bar 220 can be connected with the corresponding poles of the single batteries 100, the assembly step of the bus bar 220 is omitted, the bus bar 220 is connected with the enclosure frame 200, the corresponding installation of the bus bar 220 is realized, and compared with a conventional battery pack, an electrical isolation plate is omitted, so that the internal structure of the battery pack is simplified, and the assembly is simplified.

In this embodiment, the mutually facing sides of the mounting plates 230 are provided with a plurality of grooves 237 along the arrangement direction of the single batteries 100, the positions of the grooves 237 on the two mounting plates 230 correspond to each other, and the two corresponding grooves 237 form the slot 210 for accommodating the single battery 100 and limiting the side portions on the two sides of the single battery 100. The enclosure frame 200 formed by combining the two mounting plates 230 is open at both sides of the top 120 and the bottom of the battery cell, so that the components of the top 120 of the battery cell can be exposed to the slots 210 of the enclosure frame 200 for electrical connection, and the bottom 130 of the battery cell can be connected to the bottom plate 321 of the case 300. In particular implementation, the slot 210 may also be formed in other manners, such as: a plurality of partitions are disposed between the mounting plates 230 in the arrangement direction of the unit cells, and the partitions are connected to the mounting plates 230 at both sides, thereby forming slots between the adjacent partitions. Specifically, in the present embodiment, each mounting plate 230 of the enclosure frame 200 includes a plate 231 and a partition 232, the partition 232 is disposed at an interval on one side of the plate 231 facing each other along the arrangement direction of the single batteries 100, the bottom of the enclosure frame 200 corresponding to two sides of the single batteries 100 is provided with a bottom support 233, and the bottom support 233 extends to the lower side of the partition 232 towards the inner side of the plate 231, so as to support the bottom 130 of the single battery from the lower side of the side 140 of the single battery. The first mounting platform 234 extends towards the inner side of the plate 231 to above the spacers 232 so as to limit the top 120 of the single battery from above the side 140 of the single battery, and therefore, the adjacent spacers 232 and the first mounting platform 234 and the bottom support 233 together enclose the groove 237 for limiting the side 140, the top 120 and the bottom 130 of the single battery. During assembly, the single battery 100 can be positioned on the two mounting plates 230 by only making the grooves 237 on the two mounting plates 230 correspond to the two sides of the single battery 100 and then clamping the mounting plates 230 on the two sides of the single battery 100, and then the enclosure frame 200 and the single battery assembly are integrally placed in the battery box. In this embodiment, the two mounting plates 230 forming the enclosure frame 200 are separate structures and can be respectively mounted from two sides of the single battery 100, and the top and the bottom of two sides of the single battery 100 are limited in the groove 237. After the mounting plates 230 on the two sides of the enclosure frame 200 are clamped on the two sides of the single battery 100, the bus bar 220 is correspondingly connected with the pole of the single battery 100, so that the assembly process of the bus bar 220 is omitted, the assembly of the battery is greatly simplified, and the cost can be reduced to a certain degree.

Based on the above examples, fig. 7 and 8 show two embodiments of the enclosure and the bus bar: referring to fig. 7, the first mounting boss 234 protrudes inward from the inner wall of the mounting plate 230, the bus bar 220 is fixed to the inside of the first mounting boss 234, and thus the fixing of the bus bar 220 is achieved, and the first mounting boss 234 may restrain the top of the unit battery 100; alternatively, referring to fig. 8, first mounting plate 234 may be eliminated from mounting plate 230 and bus bar 220 may be secured directly to the inner wall of mounting plate 230 to effect positioning of bus bar 220. Referring to fig. 7 and 8, in some embodiments, the bottom of the mounting plate 230 corresponding to the two sides of the single battery 100 may further be provided with a bottom support 233, and the bottom support 233 extends toward the inner side of the plate 231 to below the spacers 232, so as to support the bottom 130 of the single battery from below the side 140 of the single battery. Thus, the adjacent spacers 232 and the bottom brackets 233 together form the above-mentioned grooves 237 for limiting the sides 140 and the bottom of the battery cells, and the opposite grooves 237 on the two mounting plates 230 form the slots 210 for positioning the battery cells 100.

Fig. 9 shows another embodiment of the enclosure frame and the bus bar, referring to fig. 8 and the related structure in the above embodiment, different from the above embodiment, in the enclosure frame 200 of the present embodiment, the mounting plate 230 is not provided with a bottom base, the enclosure frame 200 includes two symmetrically arranged mounting plates 230, each mounting plate 230 of the enclosure frame 200 includes a plate body 231 and a partition 232, the partition 232 is arranged at an interval on one side of the plate body 231 facing each other along the arrangement direction of the single batteries 100, a first mounting table 234 is arranged on the top of the enclosure frame 200 corresponding to two sides of the single batteries 100, the first mounting table 234 extends to the inside of the plate body 231 to the top of the partition 232, so as to be able to limit the top 120 of the single battery from the top of the side 140 of the single battery, thereby, the adjacent partition 232 and the first mounting table 234 together form the above-mentioned groove 237 for limiting the side 140 and the top of the single battery, and the position corresponding to the bottom 130 of the unit cell is not blocked, forming an opening into which the unit cell 100 can be inserted. During assembly, the enclosure frame 200 can be inverted, the single battery 100 is arranged in the slot 210 of the enclosure frame 200 in a manner that the top 120 of the single battery is inserted into the opening at the bottom of the enclosure frame 200, the pole of the single battery 100 can be correspondingly connected with the bus bar 220, and the tops and the side portions of the two sides of the single battery 100 are limited in the groove 237 (the first mounting table 234 can support the top of the single battery 100, and the spacer 232 can limit the side portions at the two sides of the single battery 100), so that the positioning of the single battery 100 is realized, the subsequent assembly of the box body 300 can also adopt an inverted manner, the single battery 100 can be inserted into the slot 210 from the bottom of the enclosure frame 200 to form an assembly of the enclosure frame 200 and the single battery 100, and then the lower box body 320 of the box body 300 is partially covered outside the assembly for subsequent assembly.

Fig. 10 provides another embodiment of the enclosure frame and the bus bar, and referring to fig. 10, unlike the embodiment shown in fig. 9, in the enclosure frame 200 of this embodiment, the first mounting platform 234 is not provided on the mounting plate 230, and the bus bar 220 can be directly fixed to the inner wall of the mounting plate 230, so as to achieve the positioning of the bus bar 220. Therefore, the adjacent partitions 232 and the bus bars 220 together enclose the groove 237 for limiting the side 140 and the top 120 of the single battery, and the position corresponding to the bottom 130 of the single battery is not blocked, so that an opening for inserting the single battery 100 is formed. During assembly, the enclosure frame 200 can be inverted, the single battery 100 is arranged in the slot 210 of the enclosure frame 200 in a manner that the top 120 of the single battery is inserted into the opening at the bottom of the enclosure frame 200, the pole of the single battery 100 can be correspondingly connected with the bus bar 220, and the tops and the side portions of the two sides of the single battery 100 are limited in the groove 237 (the bus bar 220 can support the top of the single battery 100, and the spacer 232 can limit the side portions at the two sides of the single battery 100), so that the positioning of the single battery 100 is realized, the subsequent assembly of the box body 300 can also adopt an inverted manner, the single battery 100 can be inserted into the slot 210 from the bottom of the enclosure frame 200 to form an assembly of the enclosure frame 200 and the single battery 100, and then the lower box body 320 of the box body 300 is partially covered outside the assembly for subsequent assembly.

In the above embodiment, fig. 4, the enclosure frame 200 may further include a connection plate 250, and the connection plate 250 is connected between the mounting plates 230. For example, the connection plate 250 is connected to the ends of the two-piece mounting plate 230. The connection plate 250 may be connected to the mounting plate 230 by means of a snap fit, or may be detachably connected to the mounting plate 230 by a connector, or may be integrally connected to the mounting plate 230 by welding, riveting, or the like. Alternatively, in some embodiments, the connection plate 250 and the mounting plate 230 are integrally formed by an integral molding process, in this case, the enclosure frame 200 may adopt the embodiment shown in fig. 9 and 10, and the single battery 100 may be assembled with the enclosure frame 200 in the above-mentioned flip-chip manner.

In some embodiments, the connecting plate 250 may be further disposed at one end of the mounting plate 230, and the insulating insertion plate 260 may be disposed at the other end of the mounting plate, and two sides of the insulating insertion plate 260 may be abutted between the single batteries 100 and the case 300 located at the end portion, so that an expansion force of a battery assembly formed by a plurality of single batteries 100 along the arrangement direction of the single batteries 100 may be directly transmitted to the case 300 through the insulating insertion plate 260, that is, a manner that the single batteries 100 directly transmit a force to the case 300 is achieved.

In some embodiments, the plurality of insulating insertion plates 260 are arranged on the enclosure frame 200 along the arrangement direction of the single batteries 100, and the insulating insertion plates 260 are used for supporting the single batteries 100 in the arrangement direction of the single batteries 100, so that when the enclosure frame 200 of the embodiment of the present application is applied to a structure of a battery pack, the enclosure frame 200 and the single batteries 100 can be directly assembled in a box body of the battery pack, and the insulating insertion plates 260 can resist the expansion force of the single batteries 100, thereby omitting a structural member for assembling the single batteries 100 into a module, simplifying the structure and the assembly, and reducing the structural member can provide more internal installation spaces of the box body, which is helpful for improving the utilization rate of the internal space, thereby improving the volume energy density of the battery pack. The position of the insulating insertion plate 260 required to be arranged on the surrounding frame 200 can be provided with the insertion plate insertion slot 240, so that the insulating insertion plate 260 can be connected to the surrounding frame 200 in an insertion manner, the connection manner is simple, and quick assembly is facilitated. Specifically, taking the scheme that the end of the enclosure frame 200 is provided with the insulating insertion plate 260 as an example, the two mounting plates 230 of the enclosure frame 200 are provided with slots with openings facing each other, and the two slots are respectively used for accommodating the two side edges corresponding to the insulating insertion plate 260 to form the insertion plate slot 240, so that the insertion mounting can be realized by inserting the edges of the insulating insertion plate 260 corresponding to the two side slots into the slots.

As can be seen from the above embodiments, the enclosure frame 200 of the embodiment of the present application is provided with a plurality of slots 210 for placing the single batteries 100, and the bus bars 220 are disposed on the enclosure frame 200, so that an electrical isolation plate is omitted, thereby simplifying the internal structure of the battery pack and simplifying the assembly. And, the reduction of structure can provide more box internal installation spaces, helps improving the internal space utilization ratio to improve battery volume energy density.

In the battery pack according to the embodiment of the present application, referring to fig. 2 and fig. 3, the outer wall of the mounting plate 230 of the enclosure frame 200 is provided with a shoulder 270 protruding outward, and the shoulder 270 may be a long strip structure extending into a whole along the arrangement direction of the single batteries 100, or may be a plurality of boss structures arranged along the arrangement direction of the single batteries 100. The side box plate 322 of the box body 300 is provided with a positioning table 350, after the enclosure frame 200 is arranged in the box body 300, the shoulder 270 is arranged on the positioning table 350, and the outer side edge of the shoulder 270 abuts against the inner wall of the side box plate 322, so that the single battery 100 realizes the transmission of acceleration force to the box body 300 through the outer wall of the enclosure frame 200 and the shoulder 270, and the mode that the single battery 100 directly transmits force to the box body 300 is realized.

In addition, after the bottom 130 of the single battery 100 is connected with the bottom of the case 300, the bending and twisting of the single battery assembly along the length direction are limited by the bottom plate 321 of the case 300, so that the section inertia moment of the single battery assembly in the length direction is increased, and the problem of small mode of the single battery assembly in the length direction is effectively solved.

In the battery pack according to some embodiments, referring to fig. 2 and 3, the lower case 320 includes a side case plate 322 and a bottom plate 321, and a flow channel 323 for introducing a cooling liquid is provided on the bottom plate 321 or inside the bottom plate 321, so that the cooling liquid cools the bottom plate 321, and the unit batteries 100 connected to the bottom plate 321 can be cooled at the same time, thereby realizing a manner that the unit batteries 100 directly transfer heat to the case 300, omitting an intermediate heat transfer member, achieving efficient heat transfer, and releasing more internal spaces, thereby facilitating improvement of space utilization rate inside the batteries.

Referring to fig. 2, the battery pack of the above embodiment further includes a data acquisition system 400, a battery control unit 500, and a distribution box 600, where the data acquisition system 400 is electrically connected to the single battery 100 to achieve data acquisition related to the single battery 100, the battery control unit 500 is electrically connected to the data acquisition system 400 and the distribution box 600 to achieve overall regulation and control of the battery, and the distribution box 600 is further connected to a connector (including a high-voltage connection machine, a low-voltage connector, etc.) for external connection. The case 300 is further provided at one end thereof in the arrangement direction of the unit batteries 100 with a cavity for accommodating the distribution box 600, and the cavity is separated from the installation cavity 330 for installing the enclosure frame 200 by a side case plate 322. In the battery pack of the embodiment of the application, the data acquisition system 400, the battery control unit 500 and the power distribution box 600 which are conventionally applied to the battery pack in the known technology can be adopted, and the control principle thereof is not described herein again.

In the battery pack of some embodiments, the lower case 320 is provided with two installation cavities 330, and the enclosure frame 200 and the single battery 100 are respectively assembled in the installation cavities 330 in the assembling manner of the above embodiments, so as to form the battery pack with two sets of single battery components. The lower box body 320 may be formed by combining and connecting a plurality of side box plates 322, and may be formed into a whole by an integral forming process. In addition, a sealing member 340 may be disposed between the cover 310 and the lower case 320, so as to effectively isolate external moisture.

Can know by the aforesaid, the frame and the battery package of enclosing of this application embodiment have realized the direct mount of battery cell with the box, compare with the scheme that forms the battery package through the equipment of electric core module, have reduced battery package inner structure, have simplified assembly process from this, help reduce cost. And the reduction of structure can release more inner space, consequently can arrange more battery cell, improves battery package energy density, perhaps under the unchangeable condition of battery cell quantity, reduces the whole volume of battery package to envelope requirement when satisfying the in-service use. The force transmission mode of the single battery is changed, the mechanical property is effectively improved, the assembly is easy, and the cost can be reduced while the functional and safety requirements are met.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims

1. Enclose frame, its characterized in that includes:

and the busbars and the mounting plate are integrally formed and are used for being electrically connected with the poles of the single batteries.

2. The enclosure of claim 1, wherein a portion or an entirety of the buss bar is built into the mounting plate and over the cells.

3. The enclosure frame of claim 2, wherein the bus bar has one end embedded in the mounting plate and another end extending toward an inner side of the mounting plate, the other end being positioned above the battery cell.

4. The enclosure frame of claim 2, wherein the mounting plate comprises a plate body and a first mounting platform disposed at a position corresponding to a top of the battery cell, the first mounting platform protrudes inward from an inner wall of the plate body, one end of the busbar is disposed inside the first mounting platform, the other end extends toward an inner side of the plate body, and the other end can be located above the battery cell.

5. The enclosure frame of claim 2, wherein the mounting plate comprises a plate body and a second mounting platform arranged at a position corresponding to the top of the single battery, the second mounting platform extends inwards from the inner wall of the plate body to a position capable of being located above the single battery, the busbar is integrally arranged inside the second mounting platform, one side of the second mounting platform facing the single battery is provided with a connecting hole, and the connecting hole penetrates through the surface of the busbar; through the connection hole, the busbar can be electrically connected with the pole of the single battery.

6. The enclosure frame of any one of claims 1 to 5, wherein a plurality of slots are formed between the mounting plates along the arrangement direction of the single batteries, and each slot is used for placing the single battery.

7. The enclosure frame of claim 6, wherein a plurality of division bars are disposed on the mounting plate, the division bars are disposed at intervals on one sides of the mounting plate facing each other along the arrangement direction of the single batteries, a groove is defined between the division bars, and the grooves of the two mounting plates form the slot.

8. The enclosure frame of claim 7, wherein a bottom support is further disposed on a side of the mounting plate facing each other, and the bottom support is located at an end of the partition away from the busbar, and is used for supporting the bottom of the single battery cell disposed in the slot.

9. A battery pack, comprising:

a single battery;

the enclosure of any one of claims 1 to 8, the cells being arranged in rows between the mounting plates, each of the busbars being electrically connected to a corresponding one of the cells;

10. The battery pack as claimed in claim 9, wherein the outer wall of the surrounding frame is provided with a shoulder protruding outwards, the lower case is provided with a positioning table, the shoulder is arranged on the positioning table, and the outer edge of the shoulder abuts against the inner wall of the lower case.