Samsung Sdi Co., Inc.

Jeong-Doo Yi

Jun-Won Suh

Ju-Hee Sohn

Hyun-Hwa Song

Ju-Hyeong Han

Junwon Suh

Juhee Sohn

Hyunhwa Song

Bong-Kyoung Park

Jan-Dee Kim

Ju-Yong Kim

Kyeu-Yoon Sheem

Sol Choi

Dong-Hee Han

Da-Un Han

Seok-Hun Hong

Da-Woon Han

Jeong-Nam Kim

Hye-Ri Eom

Jung-Yup Yang

Hyun-Ki Park

Jungyup Yang

Jung-Gyu Nam

Tae-woo Kim

Hye-Jung Lee

Juhyeong Han

Seokhun Hong

Joon-Yeon Kim

Yoon-Hyoung Cho

Su-Yong Chae

Bongkyoung Park

Hyun-Uk Jo

Naum Feygenson

Byoung-Min Chun

Feygenson Naum

A case for a rechargeable battery and a rechargeable battery including the case, the case including a sequentially deposited first resin layer and second resin layer, wherein the second resin layer includes a butyl-based resin.

Case for rechargeable battery and rechargeable battery comprising the same

A flexible secondary battery includes: an electrode stack assembly including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate; a first electrode tab electrically connected to the first electrode plate; and a second electrode tab electrically connected to the second electrode plate. One end of the first electrode tab and one end of the second electrode tab are disposed inside the electrode stack assembly and are stacked together with the first electrode plate, the second electrode plate, and the separator to form the electrode stack assembly. A first welding part is formed between, and binds, at least one of i) a portion of the first electrode plate and a portion of the first electrode tab and ii) a portion of the second electrode plate and a portion of the second electrode tab.

Flexible secondary battery

A flexible secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates; and a pouch comprising a plurality of outwardly extending protrusions, the pouch sealing the electrode assembly and an electrolyte therein, wherein the pouch is configured such that a degree of strain of the electrode assembly resulting from bending of the pouch is lower than a degree of strain on the pouch from formation of the protrusions.

An electrode assembly and a secondary battery including the same, the electrode assembly including a plurality of first polar plates, each first polar plate including a first coating portion coated with a first active material, and a bent first non-coated portion; a plurality of second polar plates, each second polar plate including a second coating portion coated as a second active material, and a bent second non-coated portion; and a plurality of separators between the first polar plates and the second polar plates.

Electrode assembly and secondary battery including the same

A flexible secondary battery includes an electrode assembly, a first external cover that is located on a first surface of the electrode assembly, and a second external cover that is located on a second surface of the electrode assembly, the second external cover and the first external cover including a sealing portion where edges of the first external cover and the second external cover are attached to each other to seal the electrode assembly. At least one of the first external cover and the second external cover includes a stress-relief pattern in a center portion.

A flexible rechargeable battery includes: a first conductive substrate; a second conductive substrate facing the first conductive substrate; and a sealant at edges of the first conductive substrate and the second conductive substrate. The first conductive substrate includes a first resin layer, a first barrier layer, a second resin layer, a first electrode current collector layer, and a first electrode coating layer that are sequentially stacked inward from a first side of the flexible rechargeable battery. The second conductive substrate includes a third resin layer, a second barrier layer, a fourth resin layer, a second electrode current collector layer, and a second electrode coating layer that are sequentially stacked inward from a second side of the flexible rechargeable battery.

Flexible rechargeable battery

A stack-type electrode assembly includes a lowermost electrode in a lowermost portion of the electrode assembly; an uppermost electrode in an uppermost portion of the electrode assembly; at least one unit stack between the lowermost electrode and the uppermost electrode, the at least one unit stack comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a plurality of separators between the lowermost electrode and unit stack, between the unit stacks, and between the unit stack and the uppermost electrode.

Electrode assembly and lithium battery including the same

A flexible secondary battery including an electrode assembly that includes a first electrode layer, a second electrode layer, and a separator between the first and second electrode layers; a protection film on at least one of an upper surface or a lower surface of the electrode assembly; a fixing unit, the fixing unit fixing one end portion of each of the first electrode layer, the separator, the second electrode layer, and the protection film; and a sealing unit, the sealing unit sealing the electrode assembly and the protection film therein, wherein a melting point of the protection film is higher than a melting point of the separator.

A battery includes a conductive substrate, the conductive substrate including a first resin layer, a barrier layer, a second resin layer, a first electrode current collector layer, and a first electrode coating layer that are sequentially stacked inward from an outermost side of the battery, an exterior member disposed to face the conductive substrate, a sealing portion formed at edges of the conductive substrate and the exterior member, and at least one second inner electrode positioned between the conductive substrate and the exterior member and stacked using a separator as a border.

A rechargeable battery includes: an electrode assembly formed by repeatedly stacking first and second electrodes while interposing a separator therebetween, the first and second electrodes each having an uncoated region and a coated region; and a case having a flexible property and accommodating the electrode assembly. The electrode assembly includes a fixing portion where the separator is attached and fixed to the uncoated regions of the first and second electrodes.

Rechargeable battery

A rechargeable battery is provided which includes a stacked electrode assembly in a pouch where the electrode assembly changes in length due to an applied bending stress. According to an exemplary embodiment, a rechargeable battery includes: an electrode assembly including a first electrode, a separator, and a second electrode stacked together and the first electrode, the separator, and the second electrode being fixed with respect to each other by a fixed part at one side of the electrode assembly; and a flexible case accommodating the electrode assembly therein, wherein a gap between a free end of the electrode assembly and an inner surface of the case to accommodate a change in length of the electrode assembly at the free end when the electrode assembly is bent.

A rechargeable battery is disclosed. In one aspect, the battery includes an electrode assembly including a first electrode, a separator, and a second electrode stacked together, wherein the first electrode, the separator, and the second electrode are fixed at a fixing portion on a first side of the electrode assembly. A case accommodates the electrode assembly; and first and second electrode tabs are respectively connected to the first and second electrodes and extend from a first end portion of the case so as to form a tab gap therebetween. Each of the first and second electrode tabs includes first and second adhesive portions opposing each other, at least one wire having a bent portion interconnecting the first and second adhesive portions, and an insulating member covering the bent portion.

A flexible secondary battery includes an electrode assembly and external material surrounding the electrode assembly having at least one bonding portion, wherein the external material is bonded to itself at the at least one bonding portion, and the at least one bonding portion extends in a lengthwise direction of the electrode assembly at an edge of the electrode assembly.

Flexible secondary battery having a bonding portion extending in a lengthwise direction

Disclosed herein is a rechargeable battery capable of maintaining alignment among a positive electrode, a negative electrode, and a separator of an electrode assembly even in the case in which a form thereof is changed or bent. The rechargeable battery includes: an electrode assembly formed by stacking a first electrode, a separator, and a second electrode, and having an alignment groove formed therein; a case having flexibility and accommodating the electrode assembly therein; and an alignment guide protruding from the case and partially coupled to the alignment groove so as to accommodate and guide a change in a length of the electrode assembly depending on bending.

Rechargeable battery having stacked electrode assembly

A flexible secondary battery includes an electrode stack assembly including a first electrode layer, a second electrode layer, and a separator between the first and second electrode layers; wherein the electrode stack assembly has a first end portion and a second end portion located opposite to the first end portion; and a fixing member fixing the first electrode layer, the separator, and the second electrode layer together; wherein the electrode stack assembly includes a fixing member region in which the fixing member is formed, the fixing member region being located between the first and second end portions of the electrode stack assembly in a first direction, and wherein the first electrode layer, the separator, and the second electrode layer are flexible at both sides of the fixing member.

Growing community of inventors

Yongin-si, South Korea

Jeong-Doo Yi