CN218975724U

CN218975724U - CCS assembly, battery cell assembly and battery pack

Info

Publication number: CN218975724U
Application number: CN202223376861.9U
Authority: CN
Inventors: 罗荣强
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-05
Anticipated expiration: 2032-12-15

Abstract

The utility model provides a CCS component, a battery cell component and a battery pack, wherein a heating film and a sampling circuit board are arranged in a stacked mode, so that the heating film is integrated in the CCS component, meanwhile, a first through yielding gap is arranged on the heating film, so that an aluminum bar connected with the sampling circuit board can be electrically connected with a pole of a battery cell monomer in the battery cell component through the first yielding gap, a plurality of battery cells are connected in series or in parallel, state data of the battery cell monomer is collected through the sampling circuit board, the heating film can heat the battery cell component, the battery cell monomer is in a relatively proper temperature environment, the service life is guaranteed, the state data collection and heating of the battery cell monomer are realized through the CCS component at the same time, the use of materials is reduced, the assembly process is simplified, and the production efficiency is effectively improved.

Description

CCS assembly, battery cell assembly and battery pack

Technical Field

The utility model relates to the technical field of power batteries, in particular to a CCS assembly, a battery core assembly and a battery pack.

Background

As the demand of new energy automobiles on batteries is increasing in recent years, the demand is also increasing. The natural temperature application range of the battery is limited, particularly in the cold weather environment, the chemical activity of the battery is reduced, the performance of the battery is extremely limited, the effective capacity of the battery is greatly reduced and even the battery cannot be charged, and the battery is seriously and irreversibly changed to seriously influence the service life of the battery, so that the battery is inevitably operated in a proper temperature range by using the heating device.

The CCS (Cells Contact System) component is configured in the battery pack and is used for collecting state data such as temperatures and/or voltages of a plurality of battery cells and the like so as to monitor the states of the battery cells.

At present, the split type of CCS subassembly and heating device (for example heating film) relates to, and both are installed respectively in the two sides of the electric core subassembly that constitutes by a plurality of electric core monomers arranging in proper order, and in actual production, the installation of CCS subassembly and heating film needs to go on step by step, welds the CCS subassembly on the upper surface of electric core subassembly, glues the side at electric core subassembly with the heating film, and the heating film still needs to adopt fastener such as buckle, screw to fix mutually with the both ends end plate of electric core subassembly simultaneously, and the required material of such design and equipment mode is more, and the process is loaded down with trivial details and leads to the equipment complicacy, and production efficiency is lower.

Disclosure of Invention

The utility model aims to provide a CCS component and a battery pack, which have the advantages of reducing material types, simplifying assembly process and effectively improving production efficiency.

In a first aspect, the utility model provides a CCS assembly, including a sampling circuit board, an aluminum bar, and a heating film, where the sampling circuit board and the heating film are stacked, and the heating film is provided with a first through relief notch; the aluminum bar is connected with the sampling circuit board, and the aluminum bar covers the first yielding notch.

In an optional embodiment, the CCS assembly further includes an insulating sheet, the insulating sheet is disposed between the heating film and the circuit board, and the insulating sheet is provided with a second yielding gap opposite to the first yielding gap, and the aluminum bar is further connected to the insulating sheet and corresponds to the second yielding gap.

In an alternative embodiment, the aluminum bar and the insulating sheet are connected by means of bonding or welding.

In an alternative embodiment, a first buffer foam is extruded between the insulating sheet and the heating film.

In an alternative embodiment, a plurality of the first cushion foam is arranged at intervals along the circumferential direction of the heating film.

In an alternative embodiment, a second buffer foam is extruded between the sampling circuit board and the insulating sheet.

In an alternative embodiment, a plurality of the second cushion foam is arranged at intervals along the circumferential direction of the insulating sheet.

In an alternative embodiment, the connection mode of the sampling circuit board and the aluminum bar is welding.

In a second aspect, the present utility model provides a cell assembly comprising:

the battery cell assembly comprises a plurality of battery cell monomers which are sequentially arranged;

the CCS assembly of any of the above embodiments is disposed on one side of the electrical core assembly, where the aluminum bar is connected to an output electrode of the electrical core unit.

In a third aspect, the present utility model further provides a battery pack, including a plurality of the cell assemblies according to the foregoing embodiments.

The beneficial effects of the utility model include:

through with heating membrane and sampling circuit board range upon range of setting for heating membrane integration is in the CCS subassembly, set up the first breach of stepping down that runs through simultaneously on the heating membrane, so that the aluminium bar of being connected with sampling circuit board can realize the electricity with the free utmost point post of electric core in the electric core subassembly through this first breach of stepping down, thereby establish ties a plurality of electric cores or parallelly connected, and gather the free state data of electric core through sampling circuit board, the heating membrane then can be for electric core subassembly heating, so that electric core monomer is in comparatively suitable temperature environment, guarantee life-span, in this way, realized the free state data acquisition and the heating of electric core simultaneously through this CCS subassembly, the use of material has been reduced, the packaging technology has been simplified, can effectively improve production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a cell assembly according to an embodiment of the present utility model;

FIG. 2 is a top view of a cell assembly according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a CCS assembly in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic partial cross-sectional view of a CCS assembly in accordance with an embodiment of the present utility model.

Icon: 100-cell assembly; a 300-CCS component; 320-heating the film; 321-a first yielding gap; 330-aluminium bar; 350-insulating sheets; 351-second yielding gap; 370-sampling circuit board; 390-first buffer foam; 392-a second buffered foam.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Aiming at the defects that the CCS assembly 300 and the heating film 320 need to be mounted to the cell assembly 100 step by step, and the heating film 320 needs to be fixed to the cell assembly 100 by using glue and fasteners, so that materials are needed, assembly is complex due to complicated procedures, and production efficiency is low in the prior art, the inventor has studied and proposed the following examples to improve, and in the following, some embodiments of the utility model are described in detail with reference to fig. 1 to 4. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 to 3, an embodiment of the present utility model provides a battery cell assembly 100, where the battery cell assembly 100 mainly includes a battery cell assembly 100 and a CCS assembly 300, the battery cell assembly 100 is generally formed by a plurality of battery cell units arranged in sequence to provide electric energy, and the CCS assembly 300 is mainly used for connecting the plurality of battery cell units in series or in parallel, and collecting status data, such as temperature data and voltage data, of the plurality of battery cell units.

CCS assembly 300 includes sampling circuit board 370, aluminum bar 330 and heating film 320, heating film 320 and sampling circuit board 370 are stacked, wherein heating film 320 is used for being disposed on the upper surface of cell assembly 100, and thus sampling circuit board 370 and aluminum bar 330 are located on the surface of heating film 320 far from cell assembly 100. The heating film 320 is provided with a first yielding gap 321 penetrating therethrough, the aluminum bar 330 is connected with the sampling circuit board 370, and the aluminum bar 330 covers the first yielding gap 321.

In this way, through the lamination setting of the heating film 320 and the sampling circuit board 370, the heating film 320 is integrated in the CCS assembly 300, and meanwhile, the through first abdicating notch 321 is arranged on the heating film 320, so that the aluminum bar 330 connected with the sampling circuit board can be electrically connected with the pole of the battery cell unit in the battery cell assembly 100 through the first abdicating notch 321, thereby connecting a plurality of battery cells in series or in parallel, and collecting the state data (such as voltage and temperature information) of the battery cell unit through the sampling circuit board 370, the heating film 320 can heat the battery cell assembly 100, so that the battery cell unit is in a more suitable temperature environment, the service life is ensured, and thus, the state data collection and heating of the battery cell unit are realized through the CCS assembly 300, the use of materials is reduced, the assembly process is simplified, and the production efficiency is effectively improved.

The connection mode between the sampling circuit board 370 and the aluminum bar 330 may be welding, so as to ensure connection tightness and smoothness of electric signal transmission.

In this embodiment, the CCS assembly 300 further includes an insulating sheet 350, the insulating sheet 350 may be made of a PC material, the insulating sheet 350 is disposed between the heating film 320 and the circuit board, that is, on a surface of the heating film 320 away from the electrical core assembly 100, and the insulating sheet 350 is provided with a second yielding gap 351 opposite to the first yielding gap 321. The aluminum bar 330 is connected to the insulating sheet 350, for example, the aluminum bar 330 may be located between the insulating sheet 350 and the sampling circuit board 370, where the aluminum bar 330 is connected to a surface of the insulating sheet 350 away from the heating film 320, and of course, the aluminum bar 330 may also be located between the insulating sheet 350 and the heating film 320, where the aluminum bar 330 is connected to a surface of the insulating sheet 350 near the heating film 320. At the same time, the aluminum bar 330 also covers the second relief notch 351. So play insulating effect through setting up insulating piece 350, and in order not to influence the electricity between the single utmost point post of electric core in aluminium bar 330 and the electric core subassembly 100 and be connected, consequently still need have the breach 351 of stepping down of the relative second that sets up with first breach 321 of stepping down to aluminium bar 330 can be connected with single utmost point post of electric core through breach 321 and breach 351 of stepping down of first and second.

The aluminum bar 330 and the insulating sheet 350 may be fixed by bonding, for example, the insulating sheet 350 is partially bonded to the aluminum bar 330, so as to fix the aluminum bar 330 relative to the insulating sheet 350. In addition, the aluminum bar 330 and the insulating sheet 350 may be connected by welding or other connection methods.

Referring to fig. 4, a first buffer foam 390 is disposed between the insulating sheet 350 and the heating film 320, and the upper and lower surfaces of the first buffer foam 390 are respectively pressed by the insulating sheet 350 and the heating film 320 to form a compressed state, so that the first buffer foam 390 provides an elastic force for separating the insulating sheet 350 and the heating film 320 from each other, and the thickness of the first buffer foam 390 is greater than or equal to the thickness of the aluminum bar 330 between the insulating sheet 350 and the heating film 320, so that the aluminum bar 330 is prevented from colliding with an external structure in the process of assembling the battery pack with other parts (such as a housing, etc.), thereby playing a role of buffering and supporting, and absorbing vibration.

The plurality of first buffer foam 390 are arranged along the circumferential direction of the heating film 320 at intervals, so that the insulating sheet 350 and the heating film 320 are separated by the plurality of first buffer foam 390, the contact area between the first buffer foam 390 and the heating film 320 and the insulating sheet 350 respectively is enlarged, vibration is absorbed better and uniformly, and the vibration absorbing and supporting effects are better. In addition, there is the second buffering bubble cotton 392 between sampling circuit board 370 and insulating sheet 350, the upper and lower surfaces of this second buffering bubble cotton 392 are compressed by sampling circuit board 370 and insulating sheet 350 respectively, thereby this second buffering tablet surface provides the elastic force that insulating sheet 350 and sampling circuit board 370 kept away from each other, in order to cushion sampling circuit board 370 and support, make sampling circuit board 370 and aluminium bar 330 keep at same height, the welding of aluminium bar 330 and sampling circuit board 370 is convenient for, play the effect of buffering support at the in-process of will assembling the battery package simultaneously, absorb the vibration.

The plurality of second buffer foam 392 are arranged along the circumferential direction of the heating film 320 at intervals, so that the insulating sheet 350 and the sampling circuit board 370 are separated by the plurality of second buffer foam 392, the contact area between the second buffer foam 392 and the heating film 320 and the sampling circuit board 370 respectively is enlarged, vibration is absorbed better and uniformly, and the effect of vibration reduction support is better.

In summary, according to the CCS assembly 300, the battery cell module and the battery pack provided in the embodiments of the present utility model, the aluminum bar 330 is disposed between the heating film 320 and the sampling circuit board 370 which are stacked, so that the heating film 320 is integrated in the CCS assembly 300, meanwhile, the first through yielding notch 321 is disposed on the heating film 320, so that the aluminum bar 330 is electrically connected with the pole of the battery cell in the battery cell assembly 100 through the first yielding notch 321, so as to connect a plurality of battery cells in series or in parallel, and collect the state data of the battery cell through the sampling circuit board 370, and the heating film 320 can heat the battery cell assembly 100, so that the battery cell is in a relatively suitable temperature environment, and the service life is ensured, thus, the state data collection and heating of the battery cell are simultaneously realized through the CCS assembly 300, the use of materials is reduced, the assembly process is simplified, and the production efficiency is effectively improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The CCS component is characterized by comprising a sampling circuit board, aluminum bars and a heating film, wherein the sampling circuit board and the heating film are arranged in a laminated mode, and the heating film is provided with a first through yielding gap; the aluminum bar is connected with the sampling circuit board, and the aluminum bar covers the first yielding notch.

2. The CCS assembly of claim 1, further comprising an insulating sheet disposed between the heating film and the circuit board, and wherein the insulating sheet is provided with a second relief notch disposed opposite the first relief notch, and wherein the aluminum bar is further coupled to the insulating sheet.

3. The CCS assembly according to claim 2, wherein said aluminum bar and said insulating sheet are bonded or welded.

4. The CCS assembly according to claim 2, wherein a first buffer foam is provided between said insulating sheet and said heating film.

5. The CCS assembly according to claim 4, wherein a plurality of said first cushion foam are arranged at intervals along a circumferential direction of said heating film.

6. The CCS assembly according to claim 2, wherein a second buffer foam is provided between said sampling circuit board and said insulating sheet.

7. The CCS assembly according to claim 6, wherein a plurality of said second cushion foam are arranged at intervals along a circumferential direction of said insulating sheet.

8. The CCS assembly according to claim 1, wherein said sampling circuit board and said aluminum bar are connected by welding.

9. A cell assembly, comprising:

the CCS assembly of any one of claims 1-8 disposed on one side of said cell assembly, wherein said aluminum bar is connected to an output pole of said cell unit.

10. A battery pack comprising a plurality of the cell assemblies of claim 9.