CN218101583U - Battery module and lithium titanate battery - Google Patents

Abstract

The utility model provides a battery module and lithium titanate battery. The battery module includes: a cross beam; the end plates are two, the two end plates are respectively arranged at the end parts of the cross beam, the two end plates are oppositely arranged, a limiting space is arranged between the two end plates and the cross beam in an enclosing mode, the limiting space is used for placing the battery cell assembly, and the battery cell assembly comprises a plurality of battery cell units. Use the technical scheme of the utility model, the crossbeam encloses with the end plate and establishes into spacing space, and the crossbeam can carry out the spacing of up-down direction to the electric core subassembly and fix, and the end plate that is connected with the crossbeam and is located electric core subassembly both sides can carry out the spacing of left right direction to the electric core subassembly and fix for the electric core subassembly is difficult for droing, has solved the problem that easily drops after the soft packet of electricity core concatenates among the prior art, makes battery module structure more stable.

Description

Battery module and lithium titanate battery

Technical Field

The utility model relates to a battery design makes technical field, particularly, relates to a battery module and lithium titanate battery.

Background

In the prior art, the relative movement of each soft-package battery cell is limited by a self-contained limiting structure of a heat conducting plate between the soft-package battery cells; the displacement of the cell string in 6 directions is limited by the module end plates and the module side plates at the two ends, as shown in fig. 1; wherein module end plate and module curb plate one end location, mode with adjustable the other end, after 1 equipment of soft-packaged electrical core, take the suitable precompression locking electric core of loading, enable soft-packaged electrical core inner structure relatively fixed simultaneously, in such scheme, adopt heat-conducting plate 2 to connect the plug groove from the area to concatenate between each soft-packaged electrical core 1, when the soft-packaged electrical core quantity that concatenates increases, the soft-packaged electrical core cluster drops easily, electric core cluster scatters when leading to follow-up equipment module curb plate and module end plate, inconvenient equipment.

The prior art has not solved the problem that the adjacent heat-conducting plates fall off from the inserting groove position after the soft package battery cells are connected in series.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a battery module and lithium titanate battery to the technical problem who drops from the battery module easily of electric core among the solution prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a battery module including: a cross beam; the end plates are arranged at the end parts of the cross beams respectively, the two end plates are arranged oppositely, a limiting space is formed between the two end plates and the cross beams and used for placing the cell assembly, and the cell assembly comprises a plurality of cell units.

Furthermore, the two sides of the electric core assembly are provided with mounting grooves, the cross beams are multiple, the cross beams are respectively connected with the two sides of the electric core assembly, and at least part of the cross beams are positioned in the mounting grooves.

Further, the electric core assembly comprises: the heat conduction plates are arranged at intervals, an accommodating space for accommodating the battery cell units is formed between every two adjacent heat conduction plates, and at least one battery cell unit is accommodated in the accommodating space; mounting grooves are formed in two sides of the heat conducting plate.

Further, the heat-conducting plate comprises: a first plate section; the two second plate sections are respectively connected with two ends of the first plate section at included angles, and an accommodating space is formed between the heat-conducting plate and the first plate section of the adjacent heat-conducting plate; the second plate section is provided with a mounting groove.

Further, the second plate section includes: the plate section body is connected with the first plate section at an included angle; the heat dissipation structure is multiple, the first end of the heat dissipation structure is connected with the plate section body, the second end of the heat dissipation structure is far away from the containing space, the heat dissipation structures are arranged at intervals, and a mounting groove is formed between every two adjacent heat dissipation structures.

Further, heat radiation structure includes the portion of bending, and the portion of bending includes: the first end of the first assembly section is connected with one end, far away from the first plate section, of the plate section body, and the second end of the first assembly section is far away from the accommodating space and extends; and the first end of the second component section is connected with the second end of the first component section, and the second end of the second component section extends towards the first plate section.

Furthermore, the first component section and the first plate section are arranged in parallel, and the second component section and the plate section body are arranged in an extending mode.

Further, the cross member includes: the crossbeam body, at least partial crossbeam body is located the mounting groove, and first connecting hole has all been seted up at the both ends of crossbeam body, and the crossbeam body is connected with the end plate through first connecting hole.

Further, the end plate includes: an end plate body; the supporting sections are arranged along the circumferential direction of the end plate body and connected with the end plate body in an included angle manner; wherein, seted up the second connecting hole on at least one support section, the second connecting hole sets up with first connecting hole correspondingly, and the end plate passes through the second connecting hole with the crossbeam and is connected with first connecting hole.

According to the utility model discloses an on the other hand provides a lithium titanate battery, and lithium titanate battery includes the battery module, and the battery module is foretell battery module.

Use the technical scheme of the utility model, the crossbeam encloses with the end plate and establishes into spacing space, and the crossbeam can carry out the spacing of up-down direction to the electric core subassembly and fix, and the end plate that is connected with the crossbeam and is located electric core subassembly both sides can carry out the spacing of left right direction to the electric core subassembly for the electric core subassembly is difficult for droing, has solved among the prior art the problem that easily drops after the flexible package electricity core concatenates, makes battery module structure more stable.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structure diagram of a pouch battery module in the prior art;

fig. 2 shows a schematic structural diagram of an embodiment of a pouch battery module according to the present invention;

fig. 3 shows a schematic structural view of an embodiment of a cross beam according to the invention;

fig. 4 shows a schematic structural view of an embodiment of the heat-conducting plate according to the invention.

Wherein the figures include the following reference numerals:

10. a cross beam; 11. a beam body; 110. a first connection hole;

20. an end plate; 21. an end plate body; 22. a support section; 220. a second connection hole;

30. a limiting space;

40. a battery cell assembly; 400. mounting grooves; 41. a cell unit;

42. a heat conducting plate; 421. a first plate section; 422. a second plate section; 4221. a segment body;

43. a heat dissipation structure; 431. a first composition segment; 432. and a second component section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, and in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same reference numerals are used to designate the same devices, and thus the description thereof will be omitted.

Referring to fig. 2 to 4, according to an embodiment of the present application, there is provided a battery module.

The battery module includes crossbeam 10 and end plate 20, and end plate 20 is two, and two end plates 20 set up respectively in the tip of crossbeam 10, and two end plates 20 set up relatively, encloses between two end plates 20 and the crossbeam 10 and establishes into spacing space 30, and spacing space 30 is used for placing electric core subassembly 40, and wherein, electric core subassembly 40 includes a plurality of electric core units 41.

Use the technical scheme of this embodiment, crossbeam 10 encloses with end plate 20 and establishes into electric core subassembly 40, and crossbeam 10 can carry out the spacing of up-down direction to electric core subassembly and fix, and the end plate 20 that is connected with crossbeam 10 and is located electric core subassembly both sides can carry out the spacing of left right direction to electric core subassembly 40 and fix, makes electric core subassembly 40 be difficult for droing, has solved the problem that easily drops after soft package electricity core concatenates among the prior art for battery module structure is more stable.

In an exemplary embodiment of this application, crossbeam 10 is two at least, end plate 20 is two, two crossbeams 10 are located the upper and lower both sides of electric core subassembly 40 respectively, to spacing to going on the upper and lower direction, two end plates 20 carry out the spacing of left and right directions to electric core subassembly 40, and simultaneously, crossbeam 10 still has the effect of supporting electric core subassembly 40 dead weight, crossbeam 10 can carry out the spacing of a plurality of directions to electric core subassembly 40 whole simultaneously with the spacing space that end plate 20 cooperation formed and fix, can effectively solve the problem that drops easily when including a plurality of electric core unit 41 in the electric core subassembly 40.

Further, both sides of the electric core assembly 40 are provided with mounting grooves 400, the plurality of cross beams 10 are provided, the plurality of cross beams 10 are respectively connected with both sides of the electric core assembly 40, and at least part of the cross beams 10 are located in the mounting grooves 400.

Specifically, in an exemplary embodiment of the present application, there are two beams 10, two beams 10 are respectively located at two sides of the electric core assembly 40, and preferably, the mounting grooves 400 at two sides of the electric core assembly 40 are correspondingly disposed, so that the spacing fixing effect is better, and the mounting grooves 400 are disposed at the geometric center of the side of the electric core assembly 40. It should be noted that, in order to enhance the limiting and fixing effect, the number of the mounting slots 400 and the number of the cross beams 10 may be increased, and the sizes of the mounting slots 400 and the cross beams 10 may be modified according to actual needs.

Further, the cell assembly 40 includes a plurality of heat conducting plates 42, the plurality of heat conducting plates 42 are disposed at intervals, a containing space for containing the cell units 41 is formed between adjacent heat conducting plates 42, and at least one cell unit 41 is contained in the containing space; the heat conductive plate 42 is provided at both sides thereof with mounting grooves 400.

In one exemplary embodiment of the present application, two cell units 41 are accommodated in the accommodation space.

Further, the heat conducting plate 42 includes a first plate section 421 and two second plate sections 422, the two second plate sections 422 are connected to two ends of the first plate section 421 at an included angle, and a receiving space is formed between the heat conducting plate 42 and the first plate section 421 of the adjacent heat conducting plate 42; the second plate section 422 is provided with a mounting groove 400.

In an exemplary embodiment of the present application, specifically, the first plate section 421, the two second plate sections 422 located at two ends of the first plate section 421, and the first plate section 421 of the adjacent heat conducting plate 42 are enclosed to form a containing space, so that the battery cell unit 41 is not prone to jumping or falling off in the up-down direction. When the heat conducting plates 42 are adjacently arranged and pressed, the cell unit 41 can be effectively limited and fixed.

Further, second plate section 422 includes plate section body 4221 and heat radiation structure 43, and plate section body 4221 is connected with first plate section 421 with contained angle, and heat radiation structure 43 is a plurality of, and heat radiation structure 43's first end is connected with plate section body 4221, and accommodation space sets up is kept away from to heat radiation structure 43's second end, and a plurality of heat radiation structure 43 set up at interval, form mounting groove 400 between the adjacent heat radiation structure 43. The arrangement of the heat dissipation structure 43 is beneficial to heat dissipation and cooling of the battery cell unit 41, and damage to the battery cell unit 41 due to overhigh temperature is avoided.

In an exemplary embodiment of the present application, the plate section body 4221 is a common solid plate structure, and in order to enhance the small heat dissipation effect, the plate section body 4221 may be a hollow structure to reduce the volume of the heat conducting plate 42. The plate segment body 4221 is vertically connected to the first plate segment 421 according to the conventional size and shape of the actual battery cell unit 41. In this embodiment, the long side of the segment body 4221 corresponds to the long side of the first segment 421, and the length, width, shape, and the like of the segment body 4221 may be appropriately changed in practical application, for example, the segment body 4221 may be provided in multiple segments, and the segment bodies 4221 may be arranged at a certain distance.

The heat dissipation structure 43 has various structures according to actual needs, for example, the heat dissipation structure 43 may be a general plate-shaped structure. Form mounting groove 400 between adjacent heat radiation structure 43, the at least part of crossbeam 10 is located mounting groove 400, and the heat that derives through heat radiation structure 43 can also carry out further heat dissipation through crossbeam 10, effectively promotes heat dissipation cooling effect.

Further, the heat dissipation structure 43 includes a bending portion, the bending portion includes a first component 431 and a second component 432, a first end of the first component 431 is connected with an end of the plate segment body 4221 far away from the first plate segment 421, a second end of the first component 431 is far away from the accommodating space and extends, a first end of the second component 432 is connected with a second end of the first component 431, and a second end of the second component 432 extends toward the first plate segment 421. In an exemplary embodiment of the present application, the first composition section 431 and the second composition section 432 are both of a common plate structure, and the arrangement of the first composition section 431 and the second composition section 432 can increase a heat dissipation area and accelerate the heat dissipation and cooling of the battery cell unit 41.

Further, the first composition section 431 is disposed parallel to the first plate section 421, and the second composition section 432 is disposed extending from the plate section body 4221. The volume of the battery module can be reduced by the arrangement, so that the outer surface of the battery module is smoother, and the subsequent stacking and assembling are facilitated.

Further, crossbeam 10 includes crossbeam body 11, and at least partial crossbeam body 11 is located mounting groove 400, and first connecting hole 110 has all been seted up at the both ends of crossbeam body 11, and crossbeam body 11 is connected with end plate 20 through first connecting hole 110.

In an exemplary embodiment of the present application, one end of the beam body 11 is disposed at an included angle with the rest of the beam body 11, so that the limiting effect of the beam 10 is better. In the present embodiment, the first connection holes 110 are provided in two. It should be noted that the height of the cross beam 10 should match the depth of the mounting groove 400 to make the limit fixing effect of the cross beam 10 better, for example, the height of the cross beam 10 may be consistent with the depth of the mounting groove 400.

Further, the end plate 20 includes an end plate body 21 and a plurality of support sections 22, the plurality of support sections 22 are arranged along the circumference of the end plate body 21, and the support sections 22 are connected with the end plate body 21 at an included angle; wherein, at least one support section 22 is provided with a second connection hole 220, the second connection hole 220 is correspondingly disposed with the first connection hole 110, and the end plate 20 and the beam 10 are connected with the first connection hole 110 through the second connection hole 220.

In an exemplary embodiment of the present application, the end plate body 21 is a common plate body structure, the supporting sections 22 are perpendicularly connected to the end plate body 21, wherein two second connecting holes 220 are formed in each of the two supporting sections 22, and it should be noted that the end plate 20 and the cross beam 10 can be fastened and connected by means of not limited to screw connection, bolt connection, and the like. The end plate 20 has a limiting and fixing function on the electric core assembly 40, and the support section 22 is arranged to enhance the support function.

Specifically, the assembly process of the battery module in the above embodiment is as follows:

firstly, the battery cell unit 41 is installed in the heat conducting plate 42, and the battery cell unit 41 is positioned;

secondly, locking the first ends of the two cross beams 10 and one end plate 20 through screws;

thirdly, the heat conducting plates 42 provided with the cell units 41 are sequentially installed in the cross beam 10, so that part of the cross beam 10 is positioned in the installation groove 400;

and fourthly, after the cell units 41 are connected in series, applying a pretightening force to the other end plate 20 at the second ends of the two cross beams 10, wherein the pretightening force is required to enable the battery performance to reach the optimal size, and after the cell units 41 and the heat conduction plate 42 are tightly pressed through the pretightening force, locking the second ends of the cross beams 10 with the end plates 20 through screws.

According to another embodiment of the present application, a lithium titanate battery is provided, which includes a battery module as described above. Preferably, the battery module adopts laminate polymer core. Adopt the battery module of above-mentioned embodiment to pile up fixedly to laminate polymer battery core, the direct heat-conducting plate 42 that will be equipped with electric core unit 41 concatenates on crossbeam 10, then compresses tightly back through end plate 20 with crossbeam 10 and end plate 20 locking, effectively avoids electric core unit 41 to drop, and subsequent battery processing assembly of being convenient for prolongs the life of battery.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may also be positioned in other different ways () and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be appreciated that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery module, comprising:

a cross-member (10);

end plate (20), end plate (20) are two, two end plate (20) set up respectively in the tip of crossbeam (10), two end plate (20) sets up relatively, two end plate (20) with enclose between crossbeam (10) and establish into spacing space (30), spacing space (30) are used for placing electric core subassembly (40), wherein, electric core subassembly (40) are including a plurality of electric core unit (41).

2. The battery module according to claim 1, wherein the cell assembly (40) is provided at both sides thereof with mounting grooves (400),

crossbeam (10) are a plurality of, and are a plurality of crossbeam (10) respectively with the both sides of electric core subassembly (40) are connected, at least partly crossbeam (10) are located in mounting groove (400).

3. The battery module according to claim 2, wherein the cell assembly (40) comprises:

the heat conduction plates (42) are multiple, the heat conduction plates (42) are arranged at intervals, an accommodating space for accommodating the battery cell units (41) is formed between every two adjacent heat conduction plates (42), and at least one battery cell unit (41) is accommodated in the accommodating space;

the two sides of the heat conducting plate (42) are provided with the mounting grooves (400).

4. The battery module according to claim 3, wherein the heat-conductive plate (42) comprises:

a first plate segment (421);

the number of the second plate sections (422) is two, the two second plate sections (422) are respectively connected with two ends of the first plate section (421) at included angles, and the heat-conducting plate (42) and the first plate section (421) of the adjacent heat-conducting plate (42) form the accommodating space;

the second plate section (422) is provided with the mounting groove (400).

5. The battery module according to claim 4, wherein the second plate segment (422) comprises:

a segment body (4221), the segment body (4221) connected at an angle to the first segment (421);

heat radiation structure (43), heat radiation structure (43) are a plurality of, heat radiation structure (43) first end with slab body (4221) is connected, heat radiation structure (43) second end is kept away from accommodation space sets up, and is a plurality of heat radiation structure (43) sets up with the interval, and is adjacent form between heat radiation structure (43) mounting groove (400).

6. The battery module according to claim 5, wherein the heat dissipation structure (43) comprises a bent portion, and the bent portion comprises:

a first assembly section (431), wherein a first end of the first assembly section (431) is connected with one end of the plate section body (4221) far away from the first plate section (421), and a second end of the first assembly section (431) is extended and arranged far away from the accommodating space;

a second component section (432), a first end of the second component section (432) being connected to a second end of the first component section (431), and a second end of the second component section (432) being disposed to extend toward the first plate section (421).

7. The battery module according to claim 6, wherein the first composition section (431) is disposed in parallel with the first plate section (421), and the second composition section (432) is disposed to extend from the plate section body (4221).

8. The battery module according to claim 2, wherein the cross member (10) comprises:

crossbeam body (11), at least part crossbeam body (11) are located in mounting groove (400), first connecting hole (110) have all been seted up at the both ends of crossbeam body (11), crossbeam body (11) pass through first connecting hole (110) with end plate (20) are connected.

9. The battery module according to claim 8, wherein the end plate (20) includes:

an end plate body (21);

the number of the supporting sections (22) is multiple, the supporting sections (22) are arranged along the circumferential direction of the end plate body (21), and the supporting sections (22) are connected with the end plate body (21) in an included angle mode;

at least one support section (22) is provided with a second connecting hole (220), the second connecting hole (220) and the first connecting hole (110) are correspondingly arranged, and the end plate (20) and the cross beam (10) are connected with the first connecting hole (110) through the second connecting hole (220).

10. A lithium titanate battery comprising a battery module, characterized in that the battery module is the battery module according to any one of claims 1 to 9.

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