Assemblies and methods thereof for attaching energy storage devices to devices in need thereof
Energy storage device assemblies comprising shaped energy storage devices (e.g., a sticker battery) and adhesive layers are disclosed. The adhesive layer may include a mounting adhesive, and may further include a conductive adhesive. The energy storage device assemblies may be mounted onto and electrically connected to a device in need of an energy storage device. Methods of fabrication and methods of use thereof are also disclosed.
1 . An energy storage device assembly comprising:
a shaped energy storage device comprising an anode-separator-cathode stack, a sealing material comprising a bottom side and a side wall, and a conductive tab, wherein a portion of the conductive tab extends through the side wall, and wherein the anode-separator-cathode stack is positioned within the sealing material; and
an adhesive layer comprising a mounting adhesive and a conductive adhesive, wherein the mounting adhesive is disposed on the bottom side of the shaped energy storage device, and wherein the conductive adhesive is disposed over the portion of the conductive tab;
wherein the anode-separator-cathode stack comprises an anode, a cathode and a separator positioned between the anode and the cathode, wherein the anode and the cathode each independently comprise an electron beam (EB) cured binder.
2 . The energy storage device assembly of claim 1 , wherein the shaped energy storage device is a sticker energy storage device.
3 . The energy storage device assembly of claim 1 , wherein the mounting adhesive is selected from the group consisting of an acrylic based adhesive material, an acrylic based adhesive tape, a polyester based adhesive material, a polyester based adhesive tape, admixtures thereof, and combinations thereof.
4 . The energy storage device assembly of claim 1 , wherein the conductive adhesive comprises an adhesive material and a conductive material.
5 . The energy storage device assembly of claim 4 , wherein the adhesive material is selected from the group consisting of acrylic based adhesive material, a polyester based adhesive material, admixtures thereof, and/or combinations thereof.
6 . The energy storage device assembly of claim 4 , wherein the conductive material is selected from the group consisting of a metal material, a conductive fiber material, and combinations thereof.
7 . A device, comprising:
the energy storage device assembly of claim 1 ; and
a device component comprising a device body and an electrical connection;
wherein the mounting adhesive is disposed on the device body.
8 . The device of claim 7 , wherein the conductive adhesive is in contact with the portion of the conductive tab and the electrical connection.
9 . The device of claim 7 , further comprising a soldering material in contact with the portion of the conductive tab and the electrical connection.
10 . The device of claim 7 , wherein the energy storage device assembly further comprises a light shield disposed over a top side of the shaped energy storage device.
11 . The device of claim 10 , wherein the light shield comprises a substrate and a light reflectance additive.
12 . The energy storage device assembly of claim 1 , wherein the EB cured binder is selected from an acrylated polyurethane resin, a hydroxy modified acrylated polyurethane resin, an acrylate-methacrylate monomer blend, a monoacrylate of mono-ethoxylated phenol, trimethylolpropane ethoxy triacrylate, co-polymers thereof, and combinations thereof.
13 . The energy storage device assembly of claim 1 , wherein the anode-separator-cathode stack further comprises an anode carrier adhesive positioned between the anode-separator-cathode stack and the sealing material.
14 . A method of fabricating the energy storage device assembly of claim 1 , comprising:
forming the shaped energy storage device; and
disposing the adhesive layer on the bottom side of the shaped energy storage device.
15 . The method of claim 14 , wherein forming the shaped energy storage device comprises die cutting a plurality of energy storage device elements from a single film comprising a plurality of layers.
16 . The method of claim 14 , wherein forming the shaped energy storage device comprises die cutting a plurality of energy storage device elements from a plurality of films each comprised of a single layer.
17 . The method of claim 14 , wherein disposing the adhesive layer comprises calender rolling.
18 . A method of attaching an energy storage device to a device in need thereof, comprising:
mounting the energy storage device assembly of claim 1 onto a device component comprising a device body and an electrical connection;
wherein the mounting adhesive is pressed into contact with the device body.
19 . The method of claim 18 , further comprising a conductive adhesive pressed into contact with the portion of the conductive tab and the electrical connection.
20 . The method of claim 18 , further comprising a soldering material disposed over the portion of the conductive tab and the electrical connection; and further comprising sintering the soldering material with a pulsed light beam into electrical contact with the portion of the conductive tab and the electrical connection.
21 . The method of claim 20 , wherein the pulsed light beam comprises an irradiance of about 1-10 kW/cm 2 , and is pulsed for an exposure time of about 5-500 ms.