CN216161825U

CN216161825U - Split type apron, battery module and battery package

Info

Publication number: CN216161825U
Application number: CN202122225056.5U
Authority: CN
Inventors: 洪秀玉; 范明聪
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-04-01
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to the field of batteries and discloses a split type cover plate, a battery module and a battery pack. The split type cover plate comprises a first cover plate body and a second cover plate body, a mounting hole for mounting a conductive electrode column is formed between the first cover plate body and the second cover plate body, and mounting portions used for being connected with the end portion of a shell of a battery module are arranged on the first cover plate body and the second cover plate body. The battery module comprises a shell, an electric core component, a conductive electrode column and the split type cover plate. The battery pack comprises a plurality of battery modules. The cover plate is arranged in a split mode, the conductive electrode column and the lug can be welded on the outer side of the shell during installation, the welded integral piece is installed inside the shell, the first cover plate body is installed, the conductive electrode column is overlapped on the half-moon groove of the first cover plate body, and the second cover plate body is installed, so that the conductive electrode column is located in the installation hole, assembly difficulty can be effectively reduced, and the space utilization rate of the module can be improved.

Description

Split type apron, battery module and battery package

Technical Field

The utility model relates to the field of batteries, in particular to a split type cover plate, a battery module and a battery pack.

Background

With the increasing environmental and energy problems in recent years, new energy electric vehicles gradually come into the public, and lithium ion power battery packs have also received wide attention as the main power source of new energy vehicles, wherein, the power battery module is the most important component in the power battery pack. The battery module includes the casing and sets up the apron at the casing both ends, and the inside of casing is equipped with electric core subassembly, and electric core subassembly's both ends all are equipped with the conducting block subassembly, and the conducting block subassembly includes the conducting electrode post, and the conducting electrode post stretches out rather than the apron that corresponds.

Traditional apron formula structure as an organic whole, the lug welding of conducting block subassembly and electric core subassembly needs to be connected integral type apron and conducting electrode post in advance, avoids conducting electrode post and integral type apron counterpoint inaccurate, leads to the phenomenon that the conducting electrode post can't stretch out the integral type apron to take place. During the installation, need place the electricity core subassembly earlier in the inside of casing, weld the utmost point ear of conducting block subassembly and electric core again, weld the tip at the casing with the integral type apron again at last. The unable simultaneous welding in both ends of this kind of mounting means leads to the electric core subassembly, need weld well wherein one end earlier, and one end utmost point ear need reserve longer in addition, impels the inside of casing again after the welding is accomplished, and the installation degree of difficulty is great, and space utilization is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems or at least partially solve the technical problems, the utility model provides a split cover plate, a battery module and a battery pack.

The utility model provides a split type cover plate which comprises a first cover plate body and a second cover plate body, wherein a mounting hole for mounting a conductive electrode column is formed between the first cover plate body and the second cover plate body, and mounting parts for connecting with the end part of a shell of a battery module are arranged on the first cover plate body and the second cover plate body.

Preferably, the installation department is including setting up the welding position on first apron body and second apron body, and first apron body and second apron body all are connected with the tip welded connection of casing.

The utility model also provides a battery module, which comprises a shell and the split cover plates arranged at the two ends of the shell, wherein the shell is internally provided with the electric core assembly, the two ends of the electric core assembly are respectively provided with the conductive electrode posts, and the conductive electrode posts penetrate through the corresponding mounting holes.

Preferably, the periphery of the conductive pole column is provided with a first annular clamping groove matched with the mounting hole, and an insulating part is arranged between the mounting hole and the first annular clamping groove.

Preferably, the insulating part comprises an insulating ring sleeved on the periphery of the conductive electrode column, and a second annular clamping groove matched with the mounting hole is formed in the periphery of the insulating ring.

Preferably, the conductive electrode column is connected with the electric core assembly through a bus bar, a nut is arranged inside the bus bar, and a through hole is arranged at the position of the bus bar corresponding to the nut.

Preferably, be equipped with the insulation board between busbar and the split type apron, one side that deviates from split type apron of insulation board is equipped with the uide bushing, and the uide bushing is laminated mutually with the inner wall of casing.

Preferably, the outer side of the guide sleeve is provided with a positioning buckle, and the position of the shell corresponding to the positioning buckle is provided with a positioning hole.

Preferably, a sealing ring is arranged between the insulating plate and the split cover plate.

The utility model also provides a battery pack which comprises a plurality of battery modules.

Compared with the prior art, the technical scheme provided by the embodiment of the utility model has the following advantages:

the cover plate is arranged in a split mode, the conductive electrode column and the lug can be welded on the outer side of the shell during installation, the welded integral piece is installed inside the shell, the first cover plate body is installed, the conductive electrode column is overlapped on the half-moon groove of the first cover plate body, and the second cover plate body is installed, so that the conductive electrode column is located in the installation hole, assembly difficulty can be effectively reduced, and the space utilization rate of the module can be improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic view of a split cover plate disposed at an end of a housing according to an embodiment of the present invention;

FIG. 2 is a schematic view of the conductive electrode pillar supported on the half-moon groove of the first cover plate body according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a schematic view of an arrangement of an insulating plate according to an embodiment of the present invention.

Description of the reference numerals

1. A first cover plate body; 2. a second cover plate body; 3. a conductive electrode column; 4. a housing; 41. an electrical core assembly; 42. a bus bar; 43. a nut; 44. a through hole; 5. an insulating ring; 6. an insulating plate; 61. a guide sleeve; 62. positioning buckles; 63. a hook is clamped; 7. and (5) sealing rings.

Detailed Description

In order that the above objects, features and advantages of the present invention may be more clearly understood, a solution of the present invention will be further described below. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein; it is to be understood that the embodiments described in the specification are only a part of the embodiments of the present invention, and not all of them.

Referring to fig. 1 to 4, the split cover plate provided in the embodiment of the present invention includes a first cover plate body 1 and a second cover plate body 2, a mounting hole for mounting a conductive electrode post 3 is formed between the first cover plate body 1 and the second cover plate body 2, the conductive electrode post 3 is inserted into the mounting hole, and an end portion of the conductive electrode post can extend out of the mounting hole, and preferably, the conductive electrode post 3 is clamped in the mounting hole, so as to increase connection stability. The first cover plate body 1 and the second cover plate body 2 are both provided with installation parts used for being connected with the end parts of the shell 4 of the battery module. Wherein, the shape of the split cover plate formed by the first cover plate body 1 and the second cover plate body 2 is matched with the end opening shape of the shell 4, so that the sealing effect is ensured, and meanwhile, the extra occupied space is not increased.

In some embodiments, the mounting portion includes a welding position disposed on the first cover plate body 1 and the second cover plate body 2, and the first cover plate body 1 and the second cover plate body 2 are both welded to the end of the housing 4, which is firm and has good sealing performance. In other embodiments, the first cover body 1 and the second cover body 2 may be connected to the end of the housing 4 by a snap connection.

The cover plate is arranged in a split mode, when the cover plate is installed, the conductive electrode posts 3 and the lugs can be welded on the outer side of the shell 4, then the welded integral piece is installed in the shell 4, the first cover plate body 1 is installed, the conductive electrode posts 3 are lapped on the half-moon grooves of the first cover plate body 1, and then the second cover plate body 2 is installed, so that the conductive electrode posts 3 are located in the installation holes, the assembly difficulty can be effectively reduced, and the space utilization rate of a module can be improved.

Referring to fig. 1 to 4, the present invention further provides a battery module, which includes a housing 4 and the above-mentioned split cover plates disposed at two ends of the housing 4, wherein an electrode assembly 41 is disposed inside the housing 4, two ends of the electrode assembly 41 are both provided with conductive electrode posts 3, and the conductive electrode posts 3 are inserted into corresponding mounting holes. The split cover plate herein includes all technical features of the split cover plate described above, and thus, will not be described herein too much.

Referring to fig. 3 and 4, a first annular groove matched with the mounting hole is formed in the periphery of the conductive pole column 3, and an insulating member is arranged between the mounting hole and the first annular groove. During the installation, with the utmost point ear welding of conductive pole post 3 and electric core subassembly 41, pack into the inside of casing 4 with the whole piece after the welding again, at the first apron body 1 of tip welding of casing 4 to make the first ring groove of conductive pole post 3 support on the half moon groove of first apron body 1, weld second apron body 2 again, and then accomplish fixedly. This kind of design makes 3 cards of conducting electrode post establish in the mounting hole, increases the stability of connecting, avoids conducting electrode post 3 to play along its length direction simultaneously.

In some embodiments, the insulating member includes an insulating ring 5 disposed on the outer periphery of the conductive electrode column 3, and the outer periphery of the insulating ring 5 is provided with a second annular groove matching with the mounting hole. Adopt insulating ring 5 can ensure the insulating effect between conducting electrode post 3 and first apron body 1 and the second apron body 2, and during the installation, insulating ring 5's second ring-shaped clamping groove card further increases the location effect in the mounting hole. Wherein, the shape of insulating ring 5 should match with the shape of conductive electrode post 3 for insulating ring 5 laminates completely in the periphery of conductive electrode post 3, avoids insulating ring 5 and conductive electrode post 3 along the axial direction drunkenness of conductive electrode post 3.

In other embodiments, the insulating member may also be an insulating coating disposed on the outer periphery of the conductive electrode column 3, or an insulating coating disposed on the inner wall of the mounting hole formed by the first cover body 1 and the second cover body 2. It can be seen that the specific arrangement of the insulating member is not limited as long as the insulating effect between the conductive electrode column 3 and the first cover plate body 1 and the second cover plate body 2 can be ensured.

As shown in fig. 4, the conductive electrode column 3 is connected to the electric core assembly 41 through a bus bar 42, a nut 43 is disposed inside the bus bar 42, and a through hole 44 is disposed at a position of the bus bar 42 corresponding to the nut 43. When the module is invalid, part of the shell 4 is removed, the lugs of the invalid battery cell are cut off, the battery cell is taken out, the long copper bar screws are connected with the reserved nuts 43 of the electrodes, the circuit is switched on, and the battery pack can be normally used.

As shown in fig. 4 and 5, an insulating plate 6 is arranged between the busbar 42 and the split cover plate, a guide sleeve 61 is arranged on one side of the insulating plate 6, which deviates from the split cover plate, the guide sleeve 61 is attached to the inner wall of the housing 4, a hook 63 is arranged inside the guide sleeve 61, the guide sleeve 61 is sleeved on the periphery of the busbar 42 and is connected with the busbar 42 through the hook 63, and the connection effect is ensured. Wherein, the guiding sleeve 61 is also made of insulating material, and the guiding sleeve 61 can guide the electric core assembly 41 inserted into the casing 4, and can also separate the inner wall of the casing 4 from the bus bar 42.

Further optimally, the outer side of the guiding sleeve 61 is provided with a positioning buckle 62, and the position of the shell 4 corresponding to the positioning buckle 62 is provided with a positioning hole. During installation, the cell assembly 41 is inserted until the positioning buckle 62 is clamped into the positioning hole, so that the cell assembly 41 is ensured to be installed in place, and the positioning is ensured to be accurate. Further optimally, be equipped with sealing washer 7 between insulation board 6 and the split type apron, compress tightly insulation board 6 through setting up sealing washer 7, and then compress tightly electric core subassembly 41 for compact structure, simultaneously, ensures whole sealed effect.

The utility model also provides a battery pack which comprises a plurality of battery modules, wherein the battery modules comprise all the technical characteristics of the battery modules and further comprise all the technical characteristics of the split cover plate, so that excessive description is not provided herein.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a split type apron, its characterized in that, split type apron includes first apron body (1) and second apron body (2), first apron body (1) with form the mounting hole that is used for installing between second apron body (2) and lead electrode post (3), first apron body (1) with all be equipped with the installation department that is used for with the end connection of battery module's casing (4) on second apron body (2).

2. The split cover plate according to claim 1, wherein the mounting portion comprises welding positions provided on the first cover plate body (1) and the second cover plate body (2), and the first cover plate body (1) and the second cover plate body (2) are both welded to an end of the housing (4).

3. The battery module is characterized by comprising a shell (4) and the split type cover plate, wherein the split type cover plate is arranged at the two ends of the shell (4) and is as claimed in claim 1 or 2, an electrode core assembly (41) is arranged inside the shell (4), two ends of the electrode core assembly (41) are respectively provided with an electrode guide column (3), and the electrode guide columns (3) penetrate through the mounting holes corresponding to the electrode guide columns.

4. The battery module according to claim 3, wherein the outer circumference of the conductive electrode column (3) is provided with a first ring-shaped clamping groove matched with the mounting hole, and an insulating member is arranged between the mounting hole and the first ring-shaped clamping groove.

5. The battery module according to claim 4, wherein the insulating member comprises an insulating ring (5) sleeved on the outer periphery of the electrode conducting column (3), and a second annular clamping groove matched with the mounting hole is formed in the outer periphery of the insulating ring (5).

6. The battery module according to claim 3, wherein the conductive electrode column (3) is connected with the core assembly (41) through a bus bar (42), a nut (43) is provided inside the bus bar (42), and a through hole (44) is provided at a position of the bus bar (42) corresponding to the nut (43).

7. The battery module according to claim 6, characterized in that an insulating plate (6) is arranged between the busbar (42) and the split cover plate, a guide sleeve (61) is arranged on one side of the insulating plate (6) facing away from the split cover plate, and the guide sleeve (61) is attached to the inner wall of the shell (4).

8. The battery module according to claim 7, wherein a positioning buckle (62) is arranged on the outer side of the guide sleeve (61), and a positioning hole is formed in the position of the shell (4) corresponding to the positioning buckle (62).

9. The battery module according to claim 7, wherein a sealing ring (7) is arranged between the insulating plate (6) and the split cover plate.

10. A battery pack comprising a plurality of battery modules according to any one of claims 3 to 9.