A battery of the present disclosure includes: an electrode body including a solid electrolyte; a case housing the electrode body; and a resin body provided in gaps between the case and end surfaces of the electrode body. The resin body includes a first layer laminated on the end surfaces of the electrode body and a second layer laminated on the first layer. A resin component of the first layer is a resin having a hydroxy group that is less than 100 ppm. The second layer is a layer that electrically insulates the electrode body and the case.

A battery of the present disclosure includes: an electrode body including a solid electrolyte; a case housing the electrode body; and a resin body provided in gaps between the case and end surfaces of the electrode body. The resin body includes a first layer laminated on the end surfaces of the electrode body and a second layer laminated on the first layer. A resin component of the first layer is a resin having a hydroxy group that is less than 100 ppm. The second layer is a layer that electrically insulates the electrode body and the case.

The purpose of the present invention is to provide a sealant resin composition having excellent resistance to whitening during stretching, and good heat seal strength, as well as good heat seal strength after heat aging. The present invention relates to a sealant resin composition (X) including a 1-butene/ethylene copolymer (A) satisfying a specific requirement, and a propylene-based polymer (B), the resin composition satisfying the following requirements (X1) and (X1-2): requirement (X1): having a Shore D hardness measured in accordance with ASTM D2240 being in a range of 44 to 80; and requirement (X1-2): having a melt flow rate (MFR) measured at 230 C. and a load of 2.16 kg in accordance with ASTM D1238 being 0.1 to 100 g/10 min.

The purpose of the present invention is to provide a sealant resin composition having excellent resistance to whitening during stretching, and good heat seal strength, as well as good heat seal strength after heat aging. The present invention relates to a sealant resin composition (X) including a 1-butene/ethylene copolymer (A) satisfying a specific requirement, and a propylene-based polymer (B), the resin composition satisfying the following requirements (X1) and (X1-2): requirement (X1): having a Shore D hardness measured in accordance with ASTM D2240 being in a range of 44 to 80; and requirement (X1-2): having a melt flow rate (MFR) measured at 230 C. and a load of 2.16 kg in accordance with ASTM D1238 being 0.1 to 100 g/10 min.

Embodiments described herein relate to hermetically sealed electrochemical cells. In some aspects, an electrochemical cell assembly can include an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, and a separator disposed between the anode and the cathode. A hermetic enclosure contains the anode, the anode current collector, the cathode, the cathode current collector, and the separator. An electronic circuit is electrically and/or communicatively coupled to at least one of the anode or the cathode, such that a first portion of the electronic circuit is inside the hermetic enclosure and a second portion of the electronic circuit is outside of the hermetic enclosure. The electronic circuit can includes a printed flex circuit polyimide, and/or an aluminized polymer pouch.

Embodiments described herein relate to hermetically sealed electrochemical cells. In some aspects, an electrochemical cell assembly can include an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, and a separator disposed between the anode and the cathode. A hermetic enclosure contains the anode, the anode current collector, the cathode, the cathode current collector, and the separator. An electronic circuit is electrically and/or communicatively coupled to at least one of the anode or the cathode, such that a first portion of the electronic circuit is inside the hermetic enclosure and a second portion of the electronic circuit is outside of the hermetic enclosure. The electronic circuit can includes a printed flex circuit polyimide, and/or an aluminized polymer pouch.

The disclosure provides a secondary battery, a battery pack, and an electronic device. The secondary battery includes a housing and an electrode assembly; the housing includes an end wall and a sidewall surrounding the end wall, the sidewall and the end wall are integrally formed by stretching; the electrode assembly is accommodated in the housing; wherein a wall thickness of the end wall is a, a wall thickness of the sidewall is b, 1<a/b<3, and the technical issue of battery performance degradation caused by uneven side pressure of the housing on the electrode assembly may be alleviated.

The disclosure provides a secondary battery, a battery pack, and an electronic device. The secondary battery includes a housing and an electrode assembly; the housing includes an end wall and a sidewall surrounding the end wall, the sidewall and the end wall are integrally formed by stretching; the electrode assembly is accommodated in the housing; wherein a wall thickness of the end wall is a, a wall thickness of the sidewall is b, 1<a/b<3, and the technical issue of battery performance degradation caused by uneven side pressure of the housing on the electrode assembly may be alleviated.

A battery module includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator, a case accommodating the electrode assembly, and a deformation prevention part having a substantially similar geometry to a periphery of the case, the deformation prevention part surrounding the periphery of the case, thereby forming a unit module. Because a facing distance between internal components of a secondary battery is kept uniform, the charging and discharging efficiency of the secondary battery is improved, and the lifespan of the secondary battery is prolonged.

A battery module includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator, a case accommodating the electrode assembly, and a deformation prevention part having a substantially similar geometry to a periphery of the case, the deformation prevention part surrounding the periphery of the case, thereby forming a unit module. Because a facing distance between internal components of a secondary battery is kept uniform, the charging and discharging efficiency of the secondary battery is improved, and the lifespan of the secondary battery is prolonged.