Separating plate assembly and battery pack

Abstract

The utility model provides an isolation plate assembly and a battery pack. The isolation plate assembly comprises an isolation plate body, the isolation plate body is provided with a plurality of deformation structures arranged at intervals in the length direction of the isolation plate body, at least one part of each deformation structure can extend or contract in the length direction of the isolation plate body so as to adjust the length of the isolation plate body, and the isolation plate body is provided with a plurality of pole mounting holes; any two adjacent deformation structures form a bar piece installation area in a surrounding mode. According to the utility model, the problem in the prior art that the adaptation effect of the whole module and the blister isolation plate is poor due to the tolerance of the thicknesses of the single batteries is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technology field, specifically, relate to a kind of isolation plate assembly and battery pack. BACKGROUND

[0002] Secondary battery system needs to monitor the temperature and voltage of module in real time when operating. One of the existing solutions is to use flexible printed circuit board (FPC) + blister isolation plate + aluminum bar to sample. Among them, the aluminum bar and FPC are fastened by heat riveting process and blister isolation plate, and FPC and aluminum bar are welded together by nickel sheet to collect voltage and temperature. In actual use, due to the thickness tolerance of single battery, the size of the overall module may exceed the tolerance, so that the overall module is too long or too short and difficult to match the blister isolation plate.

[0003] Therefore, there is a problem in the prior art that the overall module and the blister isolation plate are not well matched due to the thickness tolerance of the single battery. SUMMARY

[0004] The main purpose of the utility model is to provide an isolation plate assembly and a battery pack to solve the problem that the overall module and the blister isolation plate are not well matched due to the thickness tolerance of the single battery in the prior art.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, an isolation plate assembly is provided, comprising: an isolation plate body, the isolation plate body has a plurality of deformation structures arranged along the length direction thereof, at least a part of the deformation structure can extend or contract along the length direction of the isolation plate body to adjust the length of the isolation plate body, and the isolation plate body has a plurality of pole mounting holes; any two adjacent deformation structures enclose a bar mounting area.

[0006] Further, the pole mounting holes on the isolation plate body are divided into a plurality of groups, the plurality of groups of pole mounting holes are arranged along the length direction of the isolation plate body, each group of pole mounting holes includes two pole mounting holes arranged along the width direction of the isolation plate body; wherein the deformation structure is arranged obliquely around at least one group of pole mounting holes, and separates the two pole mounting holes in the group of pole mounting holes in two adjacent bar mounting areas.

[0007] Further, the isolation plate body further has a plurality of explosion-proof valve avoiding holes, the explosion-proof valve avoiding holes are arranged in the middle of each group of pole mounting holes; wherein each deformation structure passes through an explosion-proof valve avoiding hole.

[0008] Further, the deformation structure includes two deformation sections, one end of the deformation section extends to the explosion-proof valve avoiding hole through which the deformation structure passes, and the other end of the deformation section extends to the edge of the isolation plate body.

[0009] Furthermore, the two deformable segments are symmetrically arranged about the center of the explosion-proof valve clearance hole through which the deformable structure passes; and / or the ends of the two deformable segments away from the explosion-proof valve clearance hole through which the deformable structure passes extend to a set of opposite sides of the isolation plate body.

[0010] Furthermore, the periphery of the explosion-proof valve clearance holes corresponding to the two pole mounting holes in the same group located in the same bar installation area has mounting bosses.

[0011] Furthermore, the separator assembly also includes multiple bars, each bar mounting area having at least two bars, each bar corresponding to two pole mounting holes from different groups.

[0012] Furthermore, the isolation plate body is provided with mounting posts corresponding to the bar pieces, and the bar pieces are provided with bar piece mounting holes corresponding to the mounting posts, and there is a deformation gap between the periphery of the bar piece mounting holes and the mounting posts.

[0013] Furthermore, the deformed structure is a zigzag structure that protrudes or recesses along the thickness direction of the isolation plate body.

[0014] According to another aspect of the present invention, a battery pack is provided, including the above-described separator assembly.

[0015] Applying the technical solution of this utility model, the isolation plate assembly in this application includes an isolation plate body, the isolation plate body has a plurality of deformable structures spaced apart along its length direction, at least a portion of the deformable structures can extend or contract along the length direction of the isolation plate body to adjust the length of the isolation plate body, and the isolation plate body has a plurality of pole mounting holes; any two adjacent deformable structures form a bar plate mounting area.

[0016] When using the separator assembly of this application, because the separator body has a deformable structure, during the assembly process of the separator assembly and the battery module, when the overall length of the battery module changes from the preset length due to the thickness tolerance of individual cells, the length of the separator body can be changed by the deformation of the deformable structure, so that the length of the separator body can change with the overall length of the battery module, thereby ensuring that the separator body can be adapted to the battery module. Therefore, the separator assembly of this application effectively solves the problem of poor fit between the overall module and the vacuum-formed separator caused by the thickness tolerance of individual cells in the prior art. Furthermore, since any two adjacent deformable structures can form a panel mounting area, the panel can be installed in the panel mounting area, and when the length of the separator body changes under the influence of the deformation of the deformable structure, it will not affect the assembly of the panel. Therefore, when the length of the separator body changes, it can also avoid affecting the assembly of the panel, thereby ensuring the performance of the panel. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of an isolation plate assembly according to a specific embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the structure of the plate of the isolation plate assembly in a specific embodiment of this application is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Isolation plate body; 11. Deformation structure; 111. Deformation section; 1111. First section; 1112. Second section; 12. Bar plate installation area; 13. Pole post mounting hole; 14. Explosion-proof valve clearance hole; 141. Mounting boss; 15. Mounting column; 20. Bar plate; 21. Bar plate mounting hole. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] To address the problem of poor compatibility between the overall module and the vacuum-formed separator caused by the thickness tolerance of individual battery cells in the prior art, this application provides a separator assembly and a battery pack.

[0026] like Figure 1 and Figure 2As shown, the isolation plate assembly in this application includes an isolation plate body 10, which has a plurality of deformable structures 11 spaced apart along its length direction. At least a portion of the deformable structures 11 can extend or retract along the length direction of the isolation plate body 10 to adjust the length of the isolation plate body 10. The isolation plate body 10 also has a plurality of pole mounting holes 13. Any two adjacent deformable structures 11 form a pole mounting area 12.

[0027] When using the separator assembly of this application, since the separator body 10 has a deformable structure 11, during the assembly of the separator assembly with the battery module, when the overall length of the battery module changes from the preset length due to the thickness tolerance of individual cells, the length of the separator body 10 can be changed by the deformation of the deformable structure 11, so that the length of the separator body 10 can change with the overall length of the battery module, thereby ensuring that the separator body 10 can be adapted to the battery module. Therefore, the separator assembly of this application effectively solves the problem of poor adaptation between the overall module and the vacuum-formed separator caused by the thickness tolerance of individual cells in the prior art. Furthermore, since any two adjacent deformable structures 11 can form a flap mounting area 12, the flap 20 can be installed in the flap mounting area 12, and when the length of the separator body 10 changes under the influence of the deformation of the deformable structure 11, it will not affect the assembly of the flap 20. Therefore, when the length of the isolation plate body 10 in this application changes, it is possible to avoid affecting the assembly of the bar plate 20, thereby ensuring the performance of the bar plate 20.

[0028] It should be added that, in this application, the isolation plate body 10 may also be provided with bar plates 20 in other areas besides the bar plate installation area 12.

[0029] Specifically, the electrode mounting holes 13 on the separator body 10 are divided into multiple groups, which are spaced apart along the length of the separator body 10. Each group of electrode mounting holes 13 includes two electrode mounting holes 13 spaced apart along the width of the separator body 10. The deformable structure 11 is inclined around at least one group of electrode mounting holes 13, separating two electrode mounting holes 13 in that group into two adjacent battery mounting areas 12. Furthermore, different deformable structures 11 correspond to different groups of electrode mounting holes 13, or in other words, different deformable structures 11 will not be inclined around the same group of electrode mounting holes 13. In this application, the two electrode mounting holes 13 in the same group correspond to the positive and negative electrode terminals of the same single battery cell, respectively.

[0030] like Figure 1As shown, when the battery mounting area 12 has four terminal mounting holes 13, two terminal mounting holes 13 are respectively provided above and below the battery mounting area 12. Among the four terminal mounting holes 13, the two terminal mounting holes 13 that are vertically opposite each other correspond to the two terminals of the same single cell, while the terminal mounting hole 13 on the upper left and the terminal mounting hole 13 on the lower right correspond to two different single cells. Furthermore, two batteries 20 can be provided in the battery mounting area 12. One battery 20 is used to connect to the electrodes corresponding to the two upper terminal mounting holes 13, and the other battery 20 is used to connect to the electrodes corresponding to the two lower terminal mounting holes 13, thereby realizing the electrical connection between multiple single cells in the battery module.

[0031] Regarding the relationship between the aforementioned pole mounting holes 13 and the barcode mounting area 12, in this application, four pole mounting holes 13 are generally provided in each barcode mounting area 12.

[0032] Optionally, the isolation plate body 10 also has a plurality of explosion-proof valve clearance holes 14, which are disposed in the middle of each group of pole mounting holes 13; wherein each deformable structure 11 passes through one explosion-proof valve clearance hole 14. It is understood that the number of explosion-proof valve clearance holes 14 is the same as the number of groups of pole mounting holes 13 and corresponds one-to-one, and at least a portion of the explosion-proof valve clearance holes 14 through which the deformable structure 11 passes is disposed in one of the bar mounting areas 12, and at least another portion is disposed in another bar mounting area 12. In a specific embodiment of this application, four pole mounting holes 13 are disposed in each bar mounting area 12. For the plurality of explosion-proof valve clearance holes 14, one of any two adjacent explosion-proof valve clearance holes 14 is entirely located in the same bar mounting area 12, while the other explosion-proof valve clearance hole 14 will span two adjacent bar mounting areas 12. When the number of pole mounting holes 13 in the bar installation area 12 changes, the number of explosion-proof valve clearance holes 14 between the two explosion-proof valve clearance holes 14 spanning the two adjacent bar installation areas 12 will change accordingly.

[0033] Preferably, the periphery of the explosion-proof valve clearance holes 14 corresponding to the two pole mounting holes 13 in the same group of the same pole mounting area 12 has mounting bosses 141. The mounting bosses 141 facilitate the installation and welding of the FPC.

[0034] Optionally, the deformable structure 11 includes two deformable segments 111. One end of each deformable segment 111 extends to the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes, and the other end extends to the edge of the isolation plate body 10. It should be noted that the placement of the deformable structure 11 on the isolation plate body 10 is primarily for avoiding the barrier plate 20. Therefore, the placement of the deformable structure 11 may overlap with the placement of part of the explosion-proof valve clearance hole 14. Hence, the description above uses the phrase "the deformable structure 11 passes through the explosion-proof valve clearance hole 14." In this embodiment, the deformable structure 11 can be considered as two deformable segments 111 extending circumferentially from the explosion-proof valve clearance hole 14 corresponding to the deformable structure 11.

[0035] Optionally, the two deformable segments 111 are arranged symmetrically about the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes.

[0036] Optionally, one end of each of the two deformable segments 111, away from the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes, extends to a set of opposite sides of the isolation plate body 10.

[0037] Optionally, the deformable segment 111 includes a first segment 1111 and a second segment 1112 connected in sequence. The end of the first segment 1111 away from the second segment 1112 extends to the edge of the isolation plate body 10, and the end of the second segment 1112 away from the first segment 1111 extends to the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes. The second segment 1112 is an arc-shaped segment, and the first segment 1111 is a straight segment or an arc-shaped segment.

[0038] In one specific embodiment of this application, the deformable structure 11 includes two deformable segments 111. One end of each deformable segment 111 extends to the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes, and the other end extends to the edge of the isolation plate body 10. Furthermore, the two deformable segments 111 are centrally symmetrically arranged about the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes. Simultaneously, the ends of the two deformable segments 111 away from the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes extend to a set of opposite sides of the isolation plate body 10. Further, the deformable segment 111 includes a first segment 1111 and a second segment 1112 connected sequentially. The end of the first segment 1111 away from the second segment 1112 extends to the edge of the isolation plate body 10, and the end of the second segment 1112 away from the first segment 1111 extends to the explosion-proof valve clearance hole 14 through which the deformable structure 11 passes. The second segment 1112 is an arc-shaped segment, and the first segment 1111 is a straight segment. Furthermore, in this embodiment, all the bar plate mounting areas 12 are the same or approximately the same size, and the number of pole mounting holes 13 in all the bar plate mounting areas 12 is also the same. However, it should be noted that in this application, the isolation plate body 10 is generally rectangular, and multiple sets of pole mounting holes 13 are spaced apart along the length of the isolation plate body 10. At this time, due to the structural limitations of the isolation plate body 10, there will inevitably be bar plate mounting areas 12 at both ends that are not surrounded by the two deformed structures. However, for the areas at both ends of the length of the isolation plate body 10, there will still be a group or a single pole mounting hole 13, and correspondingly, bar plates 20 will also be provided. At this time, for a single pole mounting hole 13 in this area, it can form a group of pole mounting holes 13 with the pole mounting holes 13 in the adjacent bar plate mounting area 12. Generally, the regions at both ends of the length direction of the isolation plate body 10 can have one pole mounting hole 13 or three pole mounting holes 13. In the case of three pole mounting holes 13, two pole mounting holes 13 form a group, and the other pole mounting hole 13 will form a group with the pole mounting holes 13 in the adjacent bar plate mounting area 12.

[0039] Optionally, the separator assembly also includes a plurality of tabs 20, each tab mounting area 12 having at least two tabs 20, each tab 20 corresponding to two pole mounting holes 13 in a different set. Furthermore, in this application, the tabs 20 can be aluminum tabs. The aluminum tabs can be electrically connected to nickel sheets on the FPC via laser welding.

[0040] Optionally, the isolation plate body 10 is provided with a mounting post 15 corresponding to the bar plate 20, and the bar plate 20 is provided with a bar plate mounting hole 21 corresponding to the mounting post 15, with a deformation gap between the periphery of the bar plate mounting hole 21 and the mounting post 15. In this application, the mounting post 15 and the bar plate mounting hole 21 can be used to position the bar plate 20 during installation. At the same time, since there is a deformation gap between the periphery of the bar plate mounting hole 21 and the mounting post 15, that is, in this application, the area of ​​the bar plate mounting hole 21 is larger than the cross-sectional area of ​​the mounting post 15, this arrangement ensures that when the length of the isolation plate body 10 changes, the deformation gap can provide a certain amount of movement space for the mounting post 15, thereby ensuring that the mounting post 15 will not squeeze the bar plate 20, thus ensuring the performance of the bar plate 20.

[0041] In one specific embodiment of this application, the mounting hole for the bar is elliptical.

[0042] Optionally, the deformable structure 11 is a Z-shaped structure that protrudes or retracts along the thickness direction of the partition plate body 10. In one specific embodiment of this application, the deformable structure 11 is a Z-shaped structure that protrudes along the thickness direction of the partition plate body 10. When the length of the partition plate body 10 needs to be increased, the height of the deformable structure 11 decreases, and when the length of the partition plate body 10 needs to be decreased, the height of the deformable structure 11 increases. Of course, in this application, the specific shape of the deformable structure 11 can also be adaptively adjusted according to actual usage requirements.

[0043] The above embodiments are all illustrated with the example of each bar plate mounting area 12 having 4 pole mounting holes 13. However, in actual use, each bar plate mounting area 12 of the isolation plate assembly provided in this application may have more than 4 pole mounting holes 13. For example, it may have an even number of pole mounting holes 13, greater than or equal to 6.

[0044] When the tablet mounting area 12 has an even number of pole mounting holes 13 (not shown in the figure) of 6 or more, the multiple sets of pole mounting holes 13 can be divided into multiple sets of first pole mounting hole groups 13 and multiple sets of second pole mounting hole groups 13. Multiple deformable structures 11 are inclinedly arranged around the multiple sets of first pole mounting hole groups 13, and there are multiple sets of second pole mounting holes 13 between two adjacent sets of first pole mounting holes 13; that is, the two pole mounting holes 13 of the first pole mounting hole group 13 are located in different tablet mounting areas 12, and the two pole mounting holes 13 of the second pole mounting hole group 13 are located in the same tablet mounting area 12. Specifically, taking a tablet mounting area 12 with 6 pole mounting holes 13 as an example, there are 2 sets of second pole mounting holes 13 between two adjacent sets of first pole mounting holes 13; taking a tablet mounting area 12 with 8 pole mounting holes 13 as another example, there are 3 sets of second pole mounting holes 13 between two adjacent sets of first pole mounting holes 13. And so on, without further elaboration in this application.

[0045] This application also provides a battery pack, which includes the above-described separator assembly.

[0046] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0047] 1. Effectively solves the problem of poor fit between the overall module and the vacuum-formed isolation plate caused by the thickness tolerance of individual battery cells in the existing technology;

[0048] 2. Simple structure and stable performance.

[0049] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A partition plate assembly, characterized in that, include: The isolation plate body (10) has a plurality of deformable structures (11) spaced apart along its length direction. At least a portion of the deformable structures (11) can extend or contract along the length direction of the isolation plate body (10) to adjust the length of the isolation plate body (10). The isolation plate body (10) also has a plurality of pole mounting holes (13). Any two adjacent deformable structures (11) form a panel mounting area (12).

2. The isolation plate assembly according to claim 1, characterized in that, The pole mounting holes (13) on the isolation plate body (10) are divided into multiple groups, and the multiple groups of pole mounting holes (13) are spaced apart along the length direction of the isolation plate body (10). Each group of pole mounting holes (13) includes two pole mounting holes (13) spaced apart along the width direction of the isolation plate body (10). The deformable structure (11) is inclined around at least one group of pole mounting holes (13) and separates two pole mounting holes (13) in the group into two adjacent bar plate mounting areas (12).

3. The isolation plate assembly according to claim 2, characterized in that, The isolation plate body (10) also has a plurality of explosion-proof valve clearance holes (14), which are located in the middle of each group of pole mounting holes (13); Each of the deformable structures (11) passes through one of the explosion-proof valve clearance holes (14).

4. The isolation plate assembly according to claim 3, characterized in that, The deformable structure (11) includes two deformable segments (111), one end of which extends to the explosion-proof valve clearance hole (14) through which the deformable structure (11) passes, and the other end of which extends to the edge of the isolation plate body (10).

5. The isolation plate assembly according to claim 4, characterized in that, The two deformable segments (111) are centrally symmetrically arranged about the explosion-proof valve clearance hole (14) through which the deformable structure (11) passes; and / or The ends of the two deformable segments (111) that pass through the explosion-proof valve clearance hole (14) away from the deformable structure (11) extend to a set of opposite sides of the isolation plate body (10).

6. The isolation plate assembly according to claim 3, characterized in that, The periphery of the explosion-proof valve clearance hole (14) corresponding to the two pole mounting holes (13) in the same group of the same said bar mounting area (12) has a mounting boss (141).

7. The partition assembly according to any one of claims 2 to 6, characterized in that, The isolation plate assembly also includes a plurality of pads (20), each pad mounting area (12) having at least two pads (20), each pad (20) corresponding to two pole mounting holes (13) of different groups.

8. The isolation plate assembly according to claim 7, characterized in that, The isolation plate body (10) is provided with a mounting post (15) corresponding to the bar plate (20), and the bar plate (20) is provided with a bar plate mounting hole (21) corresponding to the mounting post (15), and there is a deformation gap between the periphery of the bar plate mounting hole (21) and the mounting post (15).

9. The partition assembly according to any one of claims 1 to 6, characterized in that, The deformable structure (11) is a zigzag structure that protrudes or recesses along the thickness direction of the isolation plate body (10).

10. A battery pack, characterized in that, Includes the isolation plate assembly according to any one of claims 1 to 9.

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