CN210136902U - Battery pack and vehicle battery pack - Google Patents

Battery pack and vehicle battery pack Download PDF

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Publication number
CN210136902U
CN210136902U CN201920787826.5U CN201920787826U CN210136902U CN 210136902 U CN210136902 U CN 210136902U CN 201920787826 U CN201920787826 U CN 201920787826U CN 210136902 U CN210136902 U CN 210136902U
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China
Prior art keywords
sensitive adhesive
adhesive composition
pressure sensitive
cured
battery pack
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CN201920787826.5U
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Inventor
杨振乾
郇恒宇
张恩重
黄杰
关铮
潘锐
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3M Innovative Properties Co
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3M Innovative Properties Co
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Priority to CN201920787826.5U priority Critical patent/CN210136902U/en
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Publication of CN210136902U publication Critical patent/CN210136902U/en
Priority to US17/612,694 priority patent/US20220251432A1/en
Priority to PCT/IB2020/054726 priority patent/WO2020240343A1/en
Priority to JP2021570269A priority patent/JP2022535205A/en
Priority to EP20814724.9A priority patent/EP3976724A4/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The utility model provides a battery pack. The battery pack includes: a first cell, and a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell. The utility model provides a group battery has higher intensity and easily makes.

Description

Battery pack and vehicle battery pack
Technical Field
The utility model relates to an automotive filed, in particular to group battery and group battery for vehicle.
Background
For hybrid electric vehicles and pure electric vehicles, the stability and safety of the battery pack are both important. In the battery pack, the reliability of the insulating part of the battery pack is an important factor affecting the stability and safety thereof.
It is well known that the environment in which automobiles operate is complex and may include environments of high temperature, high humidity, severe vibration and severe impact. Under such a complicated and even harsh environment, the insulating part of the battery pack is relatively easy to crack and the adhesive failure occurs. These phenomena may cause the insulation of the battery pack to partially or completely fail, thereby causing safety problems such as short circuit of the battery.
For battery packs, a common insulation method used today is to wrap the battery cells with a pressure sensitive adhesive tape to achieve insulation. The scheme has the advantages of convenience in use, simplicity in reassembly after removal and the like, but also has the defects of lower bonding strength and the like. In general, the adhesive strength of a general pressure-sensitive adhesive tape is less than 1MPa, and therefore, the reliability of applying a general pressure-sensitive adhesive tape to a battery pack is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a group battery with stability and security.
In one aspect, the present invention provides a battery pack, comprising: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell.
According to certain embodiments of the present invention, the battery pack includes: the method comprises the following steps: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer; a second cell disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer; a battery side plate disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer; a battery end plate disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer; a battery back plane disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
According to certain embodiments of the present invention, the battery pack includes: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell; a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell; a cured second curable pressure sensitive adhesive composition layer disposed on a side of the first electrically insulating layer distal from the cured first curable pressure sensitive adhesive composition layer; a second electrically insulating layer disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer; a cured third curable pressure sensitive adhesive composition layer disposed on a side of the second electrically insulating layer distal from the cured second curable pressure sensitive adhesive composition layer; a second cell; the second cell is disposed on a side of the cured third curable pressure sensitive adhesive composition layer distal from the second electrically insulating layer.
In another aspect, the present invention provides a battery pack for a vehicle, including: according to the utility model provides a battery pack.
The utility model provides a group battery and for vehicle group battery all have good stability and security, and easily make.
Drawings
Fig. 1 is a schematic three-dimensional view of a battery pack according to certain embodiments of the present invention;
fig. 2 is a schematic cross-sectional view of a battery pack provided in accordance with certain embodiments of the present invention;
fig. 3 is a schematic cross-sectional view of a battery pack provided in accordance with certain embodiments of the present invention;
fig. 4 is a schematic cross-sectional view of a battery pack provided in accordance with certain embodiments of the present invention;
fig. 5 is a schematic cross-sectional view of a battery pack according to certain embodiments of the present invention.
Fig. 6 is a schematic x-z cross-sectional view of a battery pack as shown in fig. 1 (the bottom plate 75 of the battery pack is not shown in fig. 6).
Fig. 7 is a y-z cross-sectional schematic view of a battery pack of the type shown in fig. 1 (neither the bottom plate 75 of the battery pack nor the cells other than the first cell 10 and the second cell 50 are shown in fig. 7).
Fig. 8 is an x-z cross-sectional schematic view of a battery pack as shown in fig. 1 (fig. 8 does not show the bottom side plate 60 of the battery pack).
Fig. 9 is a schematic y-z cross-sectional view of a battery pack of the type shown in fig. 1 (fig. 9 does not show the bottom plate 75, end plate 70, and other cells of the battery pack, except for the first cell 10 and the second cell 20).
Detailed Description
The utility model discloses a group battery (for example, group battery for vehicle), as shown in fig. 1 and fig. 2, include: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10.
The curable pressure sensitive adhesive composition provided by the utility model can be applied to the surface of a battery cell (generally made of metal material) of a battery pack. Contain through ultraviolet curing the utility model provides a but solidification pressure sensitive adhesive composition's solidifiable pressure sensitive adhesive composition layer can bond insulating material to the electric core surface of group battery to provide good adhesive strength and good anti edge lifting performance, even if under complicated or even harsh conditions such as high temperature, high humidity, violent vibration or violent impact, also can guarantee to bond the insulating material on electric core surface and can not take place to break or the phenomenon of bonding inefficacy, stop the insulating inefficacy situation of group battery and take place, thereby the insulating nature, stability and the security of group battery have been improved.
According to some embodiments of the present invention, as shown in fig. 1 and 3, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, said first electrically insulating layer 30 being arranged on a side of said cured first curable pressure sensitive adhesive composition layer 20 remote from said first cell 10. According to these embodiments, the first electrical insulation layer 30 can be stably and firmly bonded to the outer surface of the first battery cell 10, and no bonding failure such as edge warping occurs.
According to some embodiments of the present invention, as shown in fig. 1 and 4, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being arranged on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20. According to these embodiments, other components of the battery pack may be bonded as desired on the side of the second electrically insulating layer 40 remote from the first electrically insulating layer 30.
According to some embodiments of the present invention, as shown in fig. 1 and 5, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being disposed on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20; a second electrical core 50, the second electrical core 50 being disposed on a side of the cured second curable pressure sensitive adhesive composition layer 40 remote from the first electrically insulating layer 30. According to these embodiments, a battery pack comprising two cells is obtained, and the present invention provides a cured curable pressure sensitive adhesive composition layer that stably and securely bonds the two cells of the battery pack and provides electrical insulation layer protection between the two cells. Further, in these embodiments, the structure comprising the cured first curable pressure sensitive adhesive composition layer 20, the first electrically insulating layer 30 and the second curable pressure sensitive adhesive composition layer 40 may be provided in the form of a cured double-sided curable pressure sensitive adhesive tape. That is, the double-sided curable pressure-sensitive adhesive tape may include: a first curable pressure sensitive adhesive composition layer 20, a first electrically insulating layer 30 and a second curable pressure sensitive adhesive composition layer 40. When the curable pressure-sensitive adhesive tape is used, one layer of the curable pressure-sensitive adhesive composition of the curable pressure-sensitive adhesive tape can be firstly attached to the surface of a first battery cell, after the curing of the layer of the curable pressure-sensitive adhesive composition is started, the other layer of the curable pressure-sensitive adhesive composition of the curable pressure-sensitive adhesive tape is attached to the surface of a second battery cell, and after the curing, the two battery cells can be stably and firmly bonded, and the electric insulating layer protection is provided between the two battery cells. Further, it is also possible to use the cured curable pressure sensitive adhesive composition layer of the present invention to stably and securely bond the cells of a plurality of battery packs and to provide an electrically insulating layer protection between every two cells, as desired, according to the ideas provided by these embodiments.
According to some embodiments of the present invention, as shown in fig. 1 and 6, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being disposed on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20; a battery side plate 60, said battery side plate 60 being arranged on a side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30. According to these embodiments, it is possible to provide a stable and strong bond between the cells and the side plates of the battery pack and to provide protection of the electrical insulation layer between the cells and the side plates.
According to some embodiments of the present invention, as shown in fig. 1 and 7, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being disposed on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20; a battery end plate 70, said battery end plate 70 being arranged on a side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30. According to these embodiments, it is possible to provide a stable and strong bond between the cells and the end plates of the battery pack and to provide protection of the electrically insulating layer between the cells and the end plates.
According to some embodiments of the present invention, as shown in fig. 1 and 8, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being disposed on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20; a battery back plane 75 (not shown in fig. 2, reference numeral 75 being marked at the interface of the back plane 75 and the side panel 60), said battery back plane 75 being arranged at the side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30. According to these embodiments, it is possible to provide a stable and strong bond between the cells and the floor of the battery pack and to provide protection of the electrically insulating layer between the cells and the end plates.
According to some embodiments of the present invention, as shown in fig. 1 and 9, the battery pack includes at least: a first battery cell 10; a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10; a first electrically insulating layer 30, the first electrically insulating layer 30 being disposed on a side of the cured first curable pressure sensitive adhesive composition layer 20 remote from the first cell 10; a cured second curable pressure sensitive adhesive composition layer 40, the cured second curable pressure sensitive adhesive composition layer 40 being disposed on a side of the first electrically insulating layer 30 remote from the cured first curable pressure sensitive adhesive composition layer 20; a second electrically insulating layer 80, said second electrically insulating layer 80 being arranged on a side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30; a cured third curable pressure sensitive adhesive composition layer 90, the cured third curable pressure sensitive adhesive composition layer 90 being disposed on a side of the second electrically insulating layer 80 remote from the cured second curable pressure sensitive adhesive composition layer 40; a second cell 50; the second cell 50 is arranged on the side of the cured third curable pressure sensitive adhesive composition layer 90 remote from the second electrically insulating layer 80. According to these embodiments, two battery cells can be stably and securely bonded with the cured curable pressure sensitive adhesive composition layer provided by the present invention, and two independent electrical insulation layer protections are provided between every two cells, thereby further improving the stability and safety of the battery. Further, it is also possible to use the cured curable pressure sensitive adhesive composition layer of the present invention to stably and securely bond the cells of a plurality of battery packs as needed and to provide two separate electrically insulating layer protections between every two cells, according to the ideas provided by these embodiments.
The following detailed description is intended to illustrate, but not limit, the invention.
Embodiment 1 is a battery pack including: a first cell; a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell.
Embodiment 2 is the battery pack according to embodiment 1, wherein the battery pack further includes: a first electrically insulating layer disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell outer surface.
Embodiment 3 is the battery pack according to embodiment 2, wherein the battery pack further includes: a cured second curable pressure sensitive adhesive composition layer; the cured second curable pressure sensitive adhesive composition layer is disposed on a side of the first electrically insulating layer distal from the first curable pressure sensitive adhesive composition layer.
Embodiment 4 is the battery pack according to embodiment 3, wherein the battery pack further includes: a second cell disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
Embodiment 5 is the battery pack according to embodiment 4, wherein the battery pack further includes: a second electrically insulating layer; a cured third curable pressure sensitive adhesive composition layer; a second cell; wherein the second electrically insulating layer is disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer; the cured third curable pressure sensitive adhesive composition layer is disposed on a side of the second electrically insulating layer remote from the cured third curable pressure sensitive adhesive composition layer; the second cell is disposed on a side of the cured third curable pressure sensitive adhesive composition layer distal from the second electrically insulating layer.
Embodiment 6 is the battery pack according to embodiment 4, wherein the battery pack further includes: a battery side plate disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
Embodiment 7 is the battery pack according to embodiment 4, wherein the battery pack further includes: a battery end plate disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
Embodiment 8 is the battery pack according to embodiment 4, wherein the battery pack further includes: a battery back plane disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
Embodiment 9 is a battery pack for a vehicle, including the battery pack according to any one of embodiments 1 to 8
Examples
The invention is further illustrated by the following examples. The following examples and comparative examples are provided to aid in the understanding of the present disclosure, and should not be construed as limiting the scope of the present disclosure.
Example E1
Ultraviolet light-induced curable pressure sensitive adhesive compositions were prepared according to the raw materials and weight ratios used in table 1.
TABLE 1
Figure DEST_PATH_GDA0002280483930000091
A double-sided adhesive tape with release paper on both sides is prepared by using porous polypropylene MMP (or other suitable electrically insulating foam layers) as a substrate, and comprises the following steps:
weighing each component (reactive polyacrylate, liquid epoxy resin, solid epoxy resin, cationic photoinitiator and polyalcohol) of the pressure-sensitive adhesive composition, adding into a flask, adding a proper amount of mixed solvent (weight ratio 3:1) of ethyl acetate and acetone for regulation, and stirring and mixing uniformly by using a pneumatic stirrer to obtain a pressure-sensitive adhesive composition solution;
standing to eliminate bubbles, coating the pressure-sensitive adhesive composition solution on release paper by using a comma roller, placing the coated release paper in an oven, heating for 10 minutes at the temperature of 110 ℃, and removing the solvent to obtain a single-side coated adhesive tape;
the tape is laminated on both sides of a porous polypropylene layer MMP (or other suitable insulating foam layer) to give a double-sided pressure sensitive adhesive foam tape.
In this embodiment, the release paper on the first side of the double-sided pressure-sensitive adhesive foam tape can be removed, and then the first pressure-sensitive adhesive layer is exposed to 365nm LED ultraviolet light source to accumulate the radiant energy to 1000mJ/cm2And starting the crosslinking and curing reaction of the adhesive. Subsequently, the first pressure-sensitive adhesive layer, which has initiated the reaction, is attached to the surface of the cell of one battery pack. And removing the release paper on the second surface of the double-sided pressure-sensitive adhesive foam tape, exposing the second pressure-sensitive adhesive layer to a 365nm LED ultraviolet light source, accumulating radiation energy to 1000mJ/c square meter, and starting the crosslinking curing reaction of the adhesive. Then, the surface of the cell of another battery pack is attached to the exposed second pressure-sensitive adhesive layer.
After the crosslinking curing reaction of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer is finished, a battery pack is obtained, as shown in fig. 1 and 5, comprising:
a first battery cell 10;
a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10, the first curable pressure sensitive adhesive composition layer 20 comprising a curable pressure sensitive adhesive composition provided according to the present embodiment;
a first electrically insulating layer (porous polypropylene MMP)30, said first electrically insulating layer 30 being disposed on a side of said cured first curable pressure sensitive adhesive composition layer 20 remote from said first cell 10;
a cured second curable pressure sensitive adhesive composition layer 40, said second curable pressure sensitive adhesive composition layer 40 comprising the curable pressure sensitive adhesive composition provided according to the present embodiment, said cured second curable pressure sensitive adhesive composition layer 40 being arranged on the side of said first electrically insulating layer 30 remote from said cured first curable pressure sensitive adhesive composition layer 20;
a second electrical core 50, the second electrical core 50 being disposed on a side of the cured second curable pressure sensitive adhesive composition layer 40 remote from the first electrically insulating layer 30.
As can be seen, in the battery pack provided by the present embodiment, the double-sided curable pressure-sensitive adhesive tape provided by the present embodiment stably and firmly bonds the two cells of the battery pack together and provides an electrically insulating layer protection between the two cells.
In addition, since the first electrically insulating layer of the double-sided curable pressure-sensitive adhesive tape provided by the present embodiment is a foam layer, the double-sided curable pressure-sensitive adhesive tape can not only provide high adhesive strength, but also be adapted to assembly mechanical tolerances, further improving the safety of the battery pack.
Example E2
This example used the same double-sided pressure sensitive adhesive tape as example E1.
In this embodiment, the release paper on the first side of the double-sided pressure-sensitive adhesive foam tape can be removed, and then the first pressure-sensitive adhesive layer is exposed to 365nm LED ultraviolet light source to accumulate the radiant energy to 1000mJ/cm2And starting the crosslinking and curing reaction of the adhesive. Subsequently, the first pressure sensitive material which has already initiated the reactionThe glue layer is attached to the surface of a cell of a battery pack. And removing the release paper on the second surface of the double-sided pressure-sensitive adhesive foam tape, exposing the second pressure-sensitive adhesive layer to a 365nm LED ultraviolet light source, accumulating radiation energy to 1000mJ/c square meter, and starting the crosslinking curing reaction of the adhesive. Then, a side plate of one battery pack is attached to the exposed second pressure-sensitive adhesive layer.
After the crosslinking curing reaction of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer is finished, a battery pack is obtained, as shown in fig. 1 and 6, including:
a first battery cell 10;
a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10, the first curable pressure sensitive adhesive composition layer 20 comprising a pressure sensitive adhesive composition provided according to the present embodiment;
a first electrically insulating layer (porous polypropylene MMP)30, said first electrically insulating layer 30 being disposed on a side of said cured first curable pressure sensitive adhesive composition layer 20 remote from said first cell 10;
a cured second curable pressure sensitive adhesive composition layer 40, said second curable pressure sensitive adhesive composition layer 40 comprising a pressure sensitive adhesive composition provided according to the present embodiment, said cured second curable pressure sensitive adhesive composition layer 40 being arranged on a side of said first electrically insulating layer 30 remote from said cured first curable pressure sensitive adhesive composition layer 20;
a battery side plate 60, said battery side plate 60 being arranged on a side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30.
As can be seen, in the battery pack provided by the present embodiment, the double-sided curable pressure-sensitive adhesive tape provided by the present embodiment stably and firmly bonds one cell and one side plate of the battery pack together, and provides an electrically insulating layer protection between the cell and the side plate.
In addition, since the first electrical insulation layer of the double-sided pressure-sensitive adhesive tape provided by the present embodiment is a foam layer, the double-sided pressure-sensitive adhesive tape not only can provide high adhesive strength, but also can be adapted to assembly mechanical tolerances, further improving the safety of the battery pack.
Example E3
This example uses the same double-sided pressure sensitive adhesive foam tape as in example E1.
In this embodiment, the release paper on the first side of the double-sided pressure-sensitive adhesive foam tape can be removed, and then the first pressure-sensitive adhesive layer is exposed to 365nm LED ultraviolet light source to accumulate the radiant energy to 1000mJ/cm2And starting the crosslinking and curing reaction of the adhesive. Subsequently, the first pressure-sensitive adhesive layer, which has initiated the reaction, is attached to the surface of the cell of one battery pack. And removing the release paper on the second surface of the double-sided pressure-sensitive adhesive foam tape, exposing the second pressure-sensitive adhesive layer to a 365nm LED ultraviolet light source, accumulating radiation energy to 1000mJ/c square meter, and starting the crosslinking curing reaction of the adhesive. Then, the end plates of one cell stack were attached to the exposed second pressure-sensitive adhesive layer.
After the crosslinking curing reaction of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer is finished, a battery pack is obtained, as shown in fig. 1 and 7, including:
a first battery cell 10;
a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10, the first curable pressure sensitive adhesive composition layer 20 comprising a pressure sensitive adhesive composition provided according to the present embodiment;
a first electrically insulating layer (porous polypropylene MMP)30, said first electrically insulating layer 30 being disposed on a side of said cured first curable pressure sensitive adhesive composition layer 20 remote from said first cell 10;
a cured second curable pressure sensitive adhesive composition layer 40, said second curable pressure sensitive adhesive composition layer 40 comprising a pressure sensitive adhesive composition provided according to the present embodiment, said cured second curable pressure sensitive adhesive composition layer 40 being arranged on a side of said first electrically insulating layer 30 remote from said cured first curable pressure sensitive adhesive composition layer 20;
a battery end plate 70, said battery side plate 60 being arranged on a side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30.
It can be seen that in the battery pack provided by the present embodiment, the double-sided pressure-sensitive adhesive foam tape provided by the present embodiment stably and firmly bonds a cell and an end plate of the battery pack together, and provides an electrically insulating layer protection between the cell and the end plate.
In addition, since the first electrical insulation layer of the double-sided pressure-sensitive adhesive tape provided by the present embodiment is a foam layer, the double-sided pressure-sensitive adhesive tape not only can provide high adhesive strength, but also can be adapted to assembly mechanical tolerances, further improving the safety of the battery pack.
Example E4
This example uses the same double-sided pressure sensitive adhesive foam tape as in example E1.
In this embodiment, the release paper on the first side of the double-sided pressure-sensitive adhesive foam tape can be removed, and then the first pressure-sensitive adhesive layer is exposed to 365nm LED ultraviolet light source to accumulate the radiant energy to 1000mJ/cm2And starting the crosslinking and curing reaction of the adhesive. Subsequently, the first pressure-sensitive adhesive layer, which has initiated the reaction, is attached to the surface of the cell of one battery pack. And removing the release paper on the second surface of the double-sided pressure-sensitive adhesive foam tape, exposing the second pressure-sensitive adhesive layer to a 365nm LED ultraviolet light source, accumulating radiation energy to 1000mJ/c square meter, and starting the crosslinking curing reaction of the adhesive. Then, the bottom plate of one battery pack was attached to the exposed second pressure-sensitive adhesive layer.
After the crosslinking curing reaction of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer is finished, a battery pack is obtained, as shown in fig. 1 and 8, including:
a first battery cell 10;
a cured first curable pressure sensitive adhesive composition layer 20 disposed on at least a portion of an exterior surface of the first cell 10, the first curable pressure sensitive adhesive composition layer 20 comprising a pressure sensitive adhesive composition provided according to the present embodiment;
a first electrically insulating layer (porous polypropylene MMP)30, said first electrically insulating layer 30 being disposed on a side of said cured first curable pressure sensitive adhesive composition layer 20 remote from said first cell 10;
a cured second curable pressure sensitive adhesive composition layer 40, said second curable pressure sensitive adhesive composition layer 40 comprising a pressure sensitive adhesive composition provided according to the present embodiment, said cured second curable pressure sensitive adhesive composition layer 40 being arranged on a side of said first electrically insulating layer 30 remote from said cured first curable pressure sensitive adhesive composition layer 20;
a battery back plate 75 (not shown in fig. 1, reference numeral 75 being marked at the interface of the back plate 75 and the side plate 60), said battery side plate 60 being arranged at the side of said cured second curable pressure sensitive adhesive composition layer 40 remote from said first electrically insulating layer 30.
It can be seen that in the battery pack provided by the present embodiment, the double-sided pressure-sensitive adhesive foam tape provided by the present embodiment stably and firmly bonds a cell and a base plate of the battery pack together, and provides an electrically insulating layer protection between the cell and the base plate.
In addition, since the first electrical insulation layer of the double-sided pressure-sensitive adhesive tape provided by the present embodiment is a foam layer, the double-sided pressure-sensitive adhesive tape not only can provide high adhesive strength, but also can be adapted to assembly mechanical tolerances, further improving the safety of the battery pack.
Obviously, 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, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims (9)

1. A battery pack, comprising:
a first cell; and
a cured first curable pressure sensitive adhesive composition layer disposed on at least a portion of an exterior surface of the first cell.
2. The battery pack of claim 1, wherein the battery pack further comprises:
a first electrically insulating layer;
the first electrically insulating layer is disposed on a side of the cured first curable pressure sensitive adhesive composition layer distal from the first cell exterior surface.
3. The battery pack of claim 2, wherein the battery pack further comprises:
a cured second curable pressure sensitive adhesive composition layer;
the cured second curable pressure sensitive adhesive composition layer is disposed on a side of the first electrically insulating layer distal from the first curable pressure sensitive adhesive composition layer.
4. The battery pack of claim 3, wherein the battery pack further comprises:
a second cell;
the second cell is disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
5. The battery pack of claim 3, wherein the battery pack further comprises:
a second electrically insulating layer;
a cured third curable pressure sensitive adhesive composition layer; and
a second cell;
wherein the content of the first and second substances,
the second electrically insulating layer is disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer;
the cured third curable pressure sensitive adhesive composition layer is disposed on a side of the second electrically insulating layer distal from the cured second curable pressure sensitive adhesive composition layer;
the second cell is disposed on a side of the cured third curable pressure sensitive adhesive composition layer distal from the second electrically insulating layer.
6. The battery pack of claim 3, wherein the battery pack further comprises:
a battery pack side plate;
the battery side plate is disposed on a side of the cured second curable pressure sensitive adhesive composition layer remote from the first electrically insulating layer.
7. The battery pack of claim 3, wherein the battery pack further comprises:
a battery pack end plate;
the battery end plate is disposed on a side of the cured second curable pressure sensitive adhesive composition layer distal from the first electrically insulating layer.
8. The battery pack of claim 3, wherein the battery pack further comprises:
a battery pack chassis;
the battery back plane is arranged on a side of the cured second curable pressure sensitive adhesive composition layer remote from the first electrically insulating layer.
9. A battery pack for a vehicle, characterized by comprising the battery pack according to any one of claims 1 to 8.
CN201920787826.5U 2019-05-28 2019-05-28 Battery pack and vehicle battery pack Active CN210136902U (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201920787826.5U CN210136902U (en) 2019-05-28 2019-05-28 Battery pack and vehicle battery pack
US17/612,694 US20220251432A1 (en) 2019-05-28 2020-05-19 Curable pressure-sensitive adhesive composition, curable pressure-sensitive adhesive tape, and battery pack
PCT/IB2020/054726 WO2020240343A1 (en) 2019-05-28 2020-05-19 Curable pressure-sensitive adhesive composition, curable pressure-sensitive adhesive tape, and battery pack
JP2021570269A JP2022535205A (en) 2019-05-28 2020-05-19 Curable pressure-sensitive adhesive composition, curable pressure-sensitive adhesive tape, and battery pack
EP20814724.9A EP3976724A4 (en) 2019-05-28 2020-05-19 Curable pressure-sensitive adhesive composition, curable pressure-sensitive adhesive tape, and battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920787826.5U CN210136902U (en) 2019-05-28 2019-05-28 Battery pack and vehicle battery pack

Publications (1)

Publication Number Publication Date
CN210136902U true CN210136902U (en) 2020-03-10

Family

ID=69706685

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920787826.5U Active CN210136902U (en) 2019-05-28 2019-05-28 Battery pack and vehicle battery pack

Country Status (1)

Country Link
CN (1) CN210136902U (en)

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