CN218548665U - Electricity core subassembly and battery module - Google Patents

Abstract

The utility model belongs to the technical field of the battery, a battery cell subassembly and battery module are disclosed. The battery core assembly comprises a plurality of groups of battery cores and detachable pieces, wherein the detachable pieces are arranged between two adjacent groups of battery cores and are fixedly connected with the side surfaces of the two adjacent groups of battery cores respectively, and the fixedly connected strength of at least one surface of each detachable piece is reduced along with the temperature rise. The utility model discloses a connect through dismantling the piece between the adjacent two sets of electric cores of electric core subassembly, make the structural strength who can dismantle the piece through intensification and reduce, under the exogenic action, can separate more easily between electric core and electric core, realize the harmless separation of disassembling between electric core, prevent that electric core from causing deformation and safety problem because of tearing open by force. The battery module includes above-mentioned battery core subassembly, and this battery module accessible heating intensification mode realizes the harmless dismantlement between the electric core, makes things convenient for the assembly and the maintenance of battery module, does benefit to the batch production of battery module.

Description

Electricity core subassembly and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery cell subassembly and battery module.

Background

The development of electric vehicles is inseparable with the performance improvement of power batteries. Among power batteries, a battery pack as a core of energy supply is therefore receiving a great deal of attention. At present, the electric core of the power battery is fixed by direct adhesion of glue, and once the electric core and the electric core are connected, the electric core can not be easily disassembled, so that the assembling and installing difficulty of the electric core is increased, the electric core can be deformed by forced disassembly, the manufacturing cost is increased, and the potential safety hazard of the battery is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electricity core subassembly and battery module to solve between electric core can not dismantle and dismantle difficult problem.

To achieve the purpose, the utility model adopts the following technical proposal:

in a first aspect, an electric core assembly is provided, which comprises a plurality of groups of electric cores and detachable pieces, wherein the detachable pieces are arranged between two adjacent groups of electric cores and are respectively fixedly connected with the side surfaces of the two adjacent groups of electric cores, and the fixedly connected strength of at least one surface of each detachable piece is reduced along with the temperature rise.

Optionally, the battery cell is a square-shell battery cell or a soft-package battery cell, and the detachable piece is of a planar structure.

Optionally, the battery cell is a cylindrical battery cell, and the detachable part is of a curved surface structure.

Optionally, the electric core assembly further comprises a heating member, and the heating member is clamped between the two groups of electric cores and used for heating the detachable member.

Optionally, the heating member is a liquid-cooled plate or a heating film.

Optionally, the detachable piece is connected with the battery cell through an adhesive layer, and the coating area of the adhesive layer is smaller than or equal to the area of the detachable piece.

Optionally, the thickness of the detachable piece is 0.01mm-1mm.

In a second aspect, a battery module is provided, which includes the above-mentioned battery cell assembly.

Optionally, the battery module further includes a housing, and the plurality of sets of battery cells are mounted in the housing.

The utility model has the advantages that:

the utility model discloses a connect through dismantling the piece between the adjacent two sets of electric cores of electric core subassembly, make the structural strength who can dismantle the piece through intensification and reduce, under the exogenic action, can separate more easily between electric core and electric core, realize the harmless separation of disassembling between electric core, prevent that electric core from causing deformation and safety problem because of tearing open by force.

The utility model discloses a battery module includes above-mentioned battery pack spare, and this battery module accessible heating intensification mode realizes the harmless dismantlement between electric core, makes things convenient for the assembly and the maintenance of battery module, does benefit to the batch production of battery module.

Drawings

Fig. 1 is a schematic structural diagram of an electric core assembly of a square-shell electric core according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an electric core assembly of a soft-package electric core according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electrode core assembly of a cylindrical electrical core according to an embodiment of the present invention.

In the figure:

1. an electric core; 11. a square-shell battery cell; 12. soft-packaged battery cells; 13. a cylindrical cell; 2. a housing; 3. a detachable member; 4. a heating element; 41. a liquid-cooled plate; 42. heating the film; 5. and (6) bonding the layers.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The utility model provides an electric core subassembly, include multiunit electricity core 1 and can dismantle piece 3. Fig. 1, fig. 2, and fig. 3 are schematic structural diagrams of the battery core assembly when the battery cell 1 is a square-shell battery cell 11, a soft-package battery cell 12, and a cylindrical battery cell 13. As shown in fig. 1-3, two adjacent groups of battery cells 1 are connected by a detachable member 3, the detachable member 3 includes a first connecting surface and a second connecting surface that are oppositely disposed, one group of battery cells 1 is connected to the first connecting surface, and the other group of battery cells 1 is connected to the second connecting surface. Specifically, the detachable part 3 in this embodiment is a detachable hot-pressed film, which includes a non-hot-pressed surface (i.e., a first connection surface) and a hot-pressed surface (i.e., a second connection surface), where the non-hot-pressed surface (i.e., the first connection surface) is connected and fixed to one set of the electric cores 1 through the adhesive layer 5, and the hot-pressed surface (i.e., the second connection surface) is connected to another set of the electric cores 1 through a hot-pressing manner, and when the electric core assembly is at a normal operation temperature, the detachable part 3 has good and reliable connection strength with the two sets of the electric cores 1, and when the temperature exceeds a set temperature, i.e., the temperature is 60 ℃ -100 ℃, the detachable part 3 is affected by the temperature and has a reduced structural strength, and is easily damaged and deformed, and under the external force, the two sets of the electric cores 1 can be separated by using a small force, so that the two sets of the electric cores 1 are easily disassembled, and the nondestructive disassembly between the electric cores 1 and the electric cores 1 is achieved. The detachable heat pressing film in this embodiment is a common component in the field, and may be made of epoxy, polyurethane, polyolefin, ethylene copolymer, polyester, polyimide, and other materials, which are prior art, and are not described herein again.

Optionally, in this embodiment, as shown in fig. 1 and fig. 2, when the battery cell 1 is a square-shell battery cell 11 or a soft-package battery cell 12, the detachable part 3 is in a planar structure and is disposed between large faces of two adjacent battery cells 1, a first connection face of the detachable part 3 is connected and fixed with one set of battery cells 1 through the adhesive layer 5, and a second connection face is connected with another set of battery cells 1 through hot pressing. In addition, the battery cell 1 may also be a cylindrical battery cell 13, as shown in fig. 3, when the battery cell 1 is the cylindrical battery cell 13, the detachable member 3 is in a wave-shaped curved surface structure, and is clamped between two sets of cylindrical battery cells 13 along with the shape. The detachable member 3 can be adaptively selected according to the shape and type of the battery cell 1, including but not limited to the shape shown in the drawings of the present embodiment.

Optionally, the electric core assembly of the present embodiment further includes a heating element 4, and as shown in fig. 1, fig. 2 and fig. 3, the heating element 4 is additionally mounted on the square-shell electric core 11, the soft-package electric core 12 and the cylindrical electric core 13. One side of heating member 4 is passed through adhesive linkage 5 and is connected with a set of electric core 1, and the opposite side is connected the face with the second of detachable 3, and heating member 4 can heat up heating detachable 3, when needing to be disassembled, through heating up heating member 4, makes the structural strength of detachable 3 reduce, disassembles easily. The heating element 4 may be a liquid cooling plate 41 or a heating film 42, which is commonly used in the art and can perform a heating function, and the specific position of the heating element 4 is related to the set position of the detachable element 3, including but not limited to the position shown in the drawings of the present embodiment. Optionally, in this embodiment, the heating element 4 may be heated to a temperature of 60 ℃ to 150 ℃, preferably to a temperature of 60 ℃ to 100 ℃.

Optionally, for the electric core assembly in which the electric core 1 is the cylindrical electric core 13, the liquid cooling plate 41 may be a curved surface wave structure, and is clamped between two adjacent sets of electric cores 1, the two opposite sides of the liquid cooling plate 41 are respectively provided with the detachable piece 3, the second connecting surface of the detachable piece 3 faces the liquid cooling plate 41 and is connected with the liquid cooling plate 41 in a hot-pressing manner, and the first connecting surface of the detachable piece 3 is fixedly connected with the plurality of electric cores 1 through the adhesive layer 5. The structural strength of the detachable piece 3 is reduced through temperature rise, so that the detachable piece 3 and the liquid cooling plate 41 are easily detached, and the nondestructive detachment between the liquid cooling plate 41 and the electric core 1 is realized.

Optionally, the coating area of the adhesive layer 5 is smaller than or equal to the area of the detachable piece 3, and the adhesive layer 5 may be a structural adhesive to prevent the adhesive layer 5 of the redundant area part from being adhered to the battery cell 1 to affect the detaching effect.

Optionally, the thickness of the detachable part 3 is in the range of 0.01mm-1mm, preferably in the range of 0.02mm-0.1mm, so that the connecting effect can be ensured while saving materials. In addition, because the detachable part 3 in this embodiment is composed of the above-mentioned high molecular material, it also can play insulating effect to a certain extent, can do thickening treatment with detachable part 3 during practical application in order to save and install the insulating film additional, has also promoted the assembly density of electric core subassembly when saving material cost.

In addition, this embodiment still provides a battery module, including foretell electric core subassembly, this battery module accessible heating intensification mode realizes the harmless dismantlement between electric core 1, makes things convenient for the assembly and the maintenance of battery module, does benefit to the batch production of battery module. Optionally, the battery module further includes a casing 2, as shown in fig. 1, multiple sets of battery cells 1 are installed in the casing 2, and the casing 2 plays a role in protecting the battery cells 1 from being packaged.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. The utility model provides an electric core subassembly, its characterized in that includes multiunit electric core and detachable member, detachable member locate between adjacent two sets of electric cores and respectively with the side rigid coupling of adjacent two sets of electric cores, the rigid coupling intensity of at least one side of detachable member descends along with temperature rise.

2. The electrical core assembly of claim 1, wherein the electrical core is a square-shell electrical core or a soft-package electrical core, and the detachable member is a planar structure.

3. The battery pack of claim 1, wherein the cells are cylindrical cells and the removable member is a curved structure.

4. The electric core assembly according to any one of claims 1-3, further comprising a heating element sandwiched between two sets of the electric cores for heating the detachable member.

5. The electrical core assembly of claim 4, wherein the heating element is a liquid-cooled plate or a heating film.

6. The battery pack of any of claims 1-3, wherein the removable member is connected to the cells by an adhesive layer, the adhesive layer having an area less than or equal to the area of the removable member.

7. The electric core assembly according to any one of claims 1 to 3, wherein said detachable member has a thickness of 0.01mm to 1mm.

8. A battery module comprising the electric core assembly according to any one of claims 1 to 7.

9. The battery module of claim 8, further comprising a housing, wherein the plurality of sets of cells are mounted within the housing.

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