CN216015578U - Battery module - Google Patents

Abstract

The utility model discloses a battery module, include: the battery comprises a shell, a plurality of battery cores, at least one bus bar and at least one plug connector. A plurality of electric cores are arranged in the shell, and each electric core is provided with a pair of pole lugs. At least one bus bar is located at an end of the housing, each bus bar having: the support part, by a plurality of guide parts of support part vertical extension, wherein a plurality of guide parts are arranged in order, and two adjacent guide parts are used for at least one utmost point ear to insert at an interval. At least one plug connector and busbar are located the same tip of casing to fixed mutually with the casing, each plug connector has first limiting plate, the second limiting plate that sets up with first limiting plate mutually, and first limiting plate and second limiting plate separate mutually and form towards the open-ended inserting groove of guide part extending direction, and the inserting groove extends along the array direction of a plurality of guide parts. The plurality of guides are operatively engaged in the insertion slot. The utility model discloses be favorable to realizing soft packet of module assembly automation, improve the efficiency in groups of module simultaneously.

Description

Battery module

Technical Field

The embodiment of the utility model provides a relate to lithium ion battery technical field, in particular to battery module.

Background

The soft package power battery has the characteristics of high capacity density, low cost and long service life. But the assembly of laminate polymer battery module needs fix back with busbar and casing simultaneously, places electric core in proper order in the recess of busbar and arranges in order, then stretches out the utmost point ear of electric core in the clearance on the busbar, among this prior art, can't accurately insert utmost point ear to the busbar to rather than fixed, can't accurately make utmost point ear insert in the busbar, need artifical supplementary assembly inspection. Therefore, in the prior art, automatic assembly is difficult, and grouping efficiency is low. The assembly of laminate polymer battery module also does not benefit to automatic assembly, and the main reason lies in that busbar and assembly degree of difficulty are great. The existing technical scheme in the industry does not completely solve the problem.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a battery module for can be favorable to realizing that battery module assembly is automatic, improve the efficiency in groups of module simultaneously.

In order to solve the above technical problem, an embodiment of the present invention provides a battery module, including:

a housing;

a plurality of cells disposed within the housing, each of the cells including a pair of tabs;

the bus bars are positioned at the end part of the shell and comprise bracket parts and a plurality of guide parts vertically extending from the bracket parts, wherein the guide parts are sequentially arranged, and two adjacent guide parts are spaced for inserting at least one tab; and

at least one plug connector, with the busbar is located the same tip of casing, and with the casing is fixed mutually, each the plug connector include first limiting plate and with the relative second limiting plate that sets up of first limiting plate, first limiting plate with the second limiting plate separates mutually and forms the orientation guide part extending direction open-ended inserting groove, the inserting groove is followed the array direction of a plurality of guide parts extends, wherein a plurality of guide parts are operatively embedded in the inserting groove.

The utility model discloses embodiment is for prior art, only need insert to between the adjacent guide part through the bottom with electric core utmost point ear from adjacent guide part, then fix utmost point ear on the busbar and just can accomplish the fixed of electric core and busbar, then the guide part embedding of the busbar that will be fixed with electric core to the inserting groove of plug connector, because of the plug connector is for fixing on the casing, the event passes through the fixed of guide part and plug connector, thereby realize the fixed of busbar and casing, thereby with electric core, busbar and casing only need can carry out the assembly of battery module through the mode of grafting and block comparatively convenient and simple and convenient, it is efficient in groups, and be favorable to realizing the automation of battery module assembly.

In one embodiment, the plug connector further includes a partition plate connecting the first limiting plate and the second limiting plate, the partition plate extends along the arrangement direction of the plurality of guide portions and is fixed on the housing, and the partition plate is a groove bottom of the insertion groove.

In one embodiment, the second limiting plate includes a plurality of limiting pieces vertically extending from the partition plate, the limiting pieces are sequentially arranged along the arrangement direction of the guiding portions, and two adjacent limiting pieces are spaced apart from each other.

In one embodiment, the housing includes:

a base plate; and

the cover plate is arranged opposite to the bottom plate;

each battery cell is arranged between the bottom plate and the cover plate, the partition plate is fixed on the bottom plate, a protruding part is arranged on the partition plate, a through hole is formed in the bottom plate, and the protruding part can be inserted into the corresponding through hole.

In one embodiment, the partition plate is provided with a plurality of the protruding parts, and the protruding parts are sequentially arranged along the arrangement direction of the plurality of the guide parts;

the bottom plate is provided with a plurality of through holes, and the plurality of protruding parts are respectively arranged in one-to-one correspondence with the plurality of through holes.

In one embodiment, further comprising:

at least one flexible pad, the flexible pad is located on the bottom plate, and extends along the direction of arrangement of a plurality of guide parts.

In one embodiment, the partition extends from both ends of the partition along the arrangement direction of the plurality of guide portions to form a first positioning section and a second positioning section, the first positioning section and the second positioning section are respectively provided with a first positioning hole and a second positioning hole, the bus bar is provided with a first positioning column and a second positioning column at both ends along the arrangement direction of the guide portions, and the first positioning column and the second positioning column are respectively and operatively embedded into the first positioning hole and the second positioning hole.

In one embodiment, the spacer is made of an insulating material.

In one embodiment, the free ends of the guide parts extend to form an insertion section, and the width direction of the insertion section is the arrangement direction of the guide parts; and the width of the insertion section is gradually reduced towards the free end of the insertion section.

In one embodiment, the method comprises the following steps:

two busbar and two plug connectors, two busbar set up relatively and are located respectively two tip of casing, two plug connectors respectively with two busbar correspond the setting.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

FIG. 2 is a schematic view of the housing, plug connector and compliant pad assembly of one embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic structural diagram of another view angle of the battery module according to an embodiment of the present invention;

fig. 5 is a diagram illustrating an assembly process of the battery module according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a busbar and a cell assembly according to an embodiment of the present invention;

fig. 7 is a schematic view of a bus bar according to an embodiment of the present invention.

Reference numerals:

1. a housing; 11. a base plate; 12. a cover plate; 13. a through hole;

2. an electric core; 21. a tab;

3. a bus bar; 31. a bracket part; 32. a guide portion; 33. a first positioning post; 34. a second positioning column; 35. an insertion section;

4. a plug-in unit; 41. a first limit plate; 42. a second limiting plate; 43. inserting grooves; 44. a partition plate; 441. a first positioning section; 442. a second positioning section; 443. a first positioning hole; 444. a second positioning hole; 45. a limiting sheet; 46. a protrusion;

5. a flexible mat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

Embodiments of the present invention are described below with reference to the drawings.

As shown in fig. 1, 2, 3, 5, 6 and 7, an embodiment of the present invention provides a battery module. This battery module includes: casing 1, a plurality of electric core 2, two busbar 3, two plug connectors 4. A plurality of cells 2 are disposed within the housing 1, each cell 2 having a pair of tabs 21. Two busbars 3 are respectively positioned at both ends of the housing 1, and each busbar 3 includes a bracket portion 31 and five guide portions 32 extending perpendicularly from the bracket portion 31. The five guide portions 32 are sequentially arranged, and adjacent two guide portions 32 are spaced apart for insertion of at least one tab 21. Each connector 4 is located at the same end of the housing 1 as its corresponding bus bar 3 and is fixed to the housing 1. Each of the connectors 4 includes a first stopper plate 41 and a second stopper plate 42, and the first stopper plate 41 and the second stopper plate 42 are disposed opposite to each other and spaced apart from each other to form a connector groove 43 opened in the extending direction of the guide portion 32. The insertion groove 43 extends in the arrangement direction of the five guide portions 32, and the five guide portions 32 are operatively fitted into the insertion groove 43. The two plug-in units 4 are respectively provided corresponding to the two busbars 3.

During the equipment battery module, insert between adjacent guide part 32 with the utmost point ear 21 of electric core 2 from the bottom of adjacent guide part 32, electric core 2 arranges along the array direction of guide part 32 in proper order, then is connected electric core 2 and copper bar to be fixed on busbar 3. At this time, the electric core 2 is fixedly connected with the bus bar 3 and is sequentially arranged on the bus bar 3, then the guide portion 32 of the bus bar 3 is inserted into the corresponding insertion groove 43, the bus bar 3 is fixed with the plug connector 4 through the embedding of the guide portion 32 and the insertion groove 43, and the plug connector 4 is fixed on the housing 1. At this time, the bus bar 3 and the case 1 are also fixed, and thus the assembly of the battery module is completed.

An embodiment of the utility model provides a pair of battery module, only need insert between adjacent guide part 32 through the bottom with 2 utmost point ears 21 of electric core from adjacent guide part 32, then fix utmost point ear 21 and just can accomplish electric core 2 and busbar 3's fixing on busbar 3, then will be fixed with electric core 2's busbar 3's guide part 32 imbeds to plug connector 4's inserting groove 43 in. Because of the plug connector 4 is for fixing on casing 1, so through the fixed of guide part 32 with plug connector 4 to realize busbar 3 and casing 1's fixed, thereby only need can carry out the assembly of battery module by comparatively convenient and simple and convenient mode through grafting and block with electric core 2, busbar 3 and casing 1, it is efficient in groups, and be favorable to realizing the automation of battery module assembly.

It will be understood that the busbars 3 are not limited to two and the plugs 4 are not limited to one, i.e. only one end of the housing is provided with busbars and plugs. The number of the guide portions 32 is not limited to five, and those skilled in the art can set the number as needed.

Further, as shown in fig. 2 and 3, the plug 4 further includes a partition 44 connecting the first stopper plate 41 and the second stopper plate 42, the partition 44 extends in the arrangement direction of the five guide portions 32 and is fixed to the housing 1, and the partition 44 is a groove bottom of the insertion groove 43. Through setting up baffle 44, can fix baffle 44 on casing 1, then first limiting plate 41, second limiting plate 42 and baffle 44 are all fixed on casing 1, easy to assemble.

Alternatively, the spacer 44 may be made of an insulating material. Through the arrangement, the conductive path of the lug arranged on the bus bar 3 leading to the bottom plate 11 is isolated, so that the short circuit phenomenon at the joint of the lug and the bottom plate 11 cannot occur, and the technical personnel can set the conductive path according to actual needs.

Preferably, as shown in fig. 2, 3 and 5, the second limiting plate 42 has five limiting pieces 45 vertically extending from the partition 44, the five limiting pieces 45 are sequentially arranged along the arrangement direction of the five guide portions 32, and two adjacent limiting pieces 45 are spaced apart. Through setting up spacing piece 45 along a plurality of direction 32 array direction range in proper order to looks interval between two adjacent spacing pieces 45, the utmost point ear 21 of electric core 2 can be held to its interval department. Since the tab 21 is soft, the tab 21 is easily damaged without providing a space, and thus a space is required to accommodate the tab 21 inserted into the space of the guide portion 32 of the bus bar 3. It should be understood that the limiting sheets 45 are not limited to five, and those skilled in the art can arrange the limiting sheets according to actual needs.

In another embodiment, as shown in fig. 3 and 4, the case 1 of the battery module includes: a bottom plate 11 and a cover plate 12, wherein the bottom plate 11 and the cover plate 12 are arranged oppositely. The casing 1 further has two side plates, and the bottom plate 11, the cover plate 12, the two side plates and the busbar 3 surround together to form a space, and the electric core 2 is arranged in the space. Each battery cell 2 is arranged between the bottom plate 11 and the cover plate 12, the partition plate 44 is fixed on the bottom plate 11, three protruding parts 46 are arranged on the partition plate 44, three through holes 13 are formed in the bottom plate 11, the protruding parts 46 can be correspondingly inserted into the through holes 13, and the protruding parts 46 are welded with the edges of the through holes 13. In this way, the separator 44 can be separately processed and the manufacture of the battery module is facilitated, and those skilled in the art can arrange it according to actual needs. It should be understood that the protruding portions 46 and the through holes 13 are not limited to three. Preferably, the protruding portions 46 are sequentially arranged along the arrangement direction of the plurality of guide portions 32, and the protruding portions 46 are disposed corresponding to the through holes 13, which can be performed by those skilled in the art according to actual needs.

As shown in fig. 2 and 5, the battery module may further include two flexible pads 5, and the flexible pads 5 may be provided on the base plate 11 and extend in the arrangement direction of the plurality of guide portions 32. Through setting up flexible pad 5, avoid busbar 3 and 2 assembly of electric core to accomplish the back, when assembling with casing 1, electric core 2 causes the impact with casing 1's bottom plate 11, and then can avoid electric core 2 weeping. The setting can be performed by those skilled in the art according to actual needs. It should be understood that the number of the flexible mats 5 is not limited to two, and may be only 1 or more.

As shown in fig. 2, 3, and 5, the partition 44 extends from both end sides in the arrangement direction of the plurality of guides 32 to form a first positioning section 441 and a second positioning section 442. The first positioning section 441 and the second positioning section 442 respectively have a first positioning hole 443 and a second positioning hole 444. The busbar 3 is provided with a first positioning column 33 and a second positioning column 34 at both side ends in the arrangement direction of the guide portions 32. The first positioning post 33 and the second positioning post 34 are respectively and operatively inserted into the first positioning hole 443 and the second positioning hole 444. By respectively inserting the first positioning post 33 and the second positioning post 34 into the first positioning hole 443 and the second positioning hole 444, the connection between the bus bar 3 and the partition 44 is more secure and stable, and the bus bar 3 is fixed on the bottom plate 11 without swinging. The setting can be performed by those skilled in the art according to actual needs.

In a further embodiment, as shown in fig. 5, 6 and 7, the free end of the guide 32 is extended with an insertion section 35. The width direction of the insertion section 35 is the arrangement direction of the five guide portions 32, and the width of the insertion section 35 gradually decreases toward the free end thereof. With this arrangement, when the tab 21 is inserted into the gap between the adjacent guide portions 32, the insertion section 35 can guide the insertion of the tab 21, so that the tab 21 can be inserted into the gap more smoothly. The skilled person can set the arrangement according to actual needs, for example, the longitudinal section of the insertion section 35 along the arrangement direction of the guide parts 32 can be set to be trapezoid, triangle, semicircle, etc. While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims (10)

1. A battery module, comprising:

a housing;

a plurality of cells disposed within the housing, each of the cells including a pair of tabs;

the bus bars are positioned at the end part of the shell and comprise bracket parts and a plurality of guide parts vertically extending from the bracket parts, wherein the guide parts are sequentially arranged, and two adjacent guide parts are spaced for inserting at least one tab; and

at least one plug connector, with the busbar is located the same tip of casing, and with the casing is fixed mutually, each the plug connector include first limiting plate and with the relative second limiting plate that sets up of first limiting plate, first limiting plate with the second limiting plate separates mutually and forms the orientation guide part extending direction open-ended inserting groove, the inserting groove is followed the array direction of a plurality of guide parts extends, wherein a plurality of guide parts are operatively embedded in the inserting groove.

2. The battery module according to claim 1, wherein the plug connector further comprises a partition plate connecting the first and second stopper plates, the partition plate extends in the arrangement direction of the plurality of guide portions and is fixed to the housing, and the partition plate is a groove bottom of the insertion groove.

3. The battery module according to claim 2, wherein the second limiting plate comprises a plurality of limiting pieces vertically extending from the partition plate, the plurality of limiting pieces are sequentially arranged along the arrangement direction of the plurality of guide portions, and two adjacent limiting pieces are spaced apart from each other.

4. The battery module according to claim 2, wherein the housing comprises:

a base plate; and

the cover plate is arranged opposite to the bottom plate;

each battery cell is arranged between the bottom plate and the cover plate, the partition plate is fixed on the bottom plate, a protruding part is arranged on the partition plate, a through hole is formed in the bottom plate, and the protruding part can be inserted into the corresponding through hole.

5. The battery module according to claim 4, wherein the separator is provided with a plurality of the protrusions, the plurality of protrusions being arranged in series along an arrangement direction of the plurality of guides;

the bottom plate is provided with a plurality of through holes, and the plurality of protruding parts are respectively arranged in one-to-one correspondence with the plurality of through holes.

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

at least one flexible pad, the flexible pad is located on the bottom plate, and extends along the direction of arrangement of a plurality of guide parts.

7. The battery module according to claim 2, wherein the separator extends beyond the first positioning section and the second positioning section at both ends in the arrangement direction of the plurality of guide portions, the first positioning section and the second positioning section are respectively provided with a first positioning hole and a second positioning hole, the bus bar is provided with a first positioning post and a second positioning post at both ends in the arrangement direction of the guide portions, and the first positioning post and the second positioning post are respectively and operatively inserted into the first positioning hole and the second positioning hole.

8. The battery module according to claim 2, wherein the separator is made of an insulating material.

9. The battery module according to claim 1, wherein an insertion section extends from a free end of the guide portion, and a width direction of the insertion section is an arrangement direction of the plurality of guide portions; and the width of the insertion section is gradually reduced towards the free end of the insertion section.

10. The battery module according to claim 1, comprising:

two busbar and two plug connectors, two busbar set up relatively and are located respectively two tip of casing, two plug connectors respectively with two busbar correspond the setting.

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