Disclosed are an energy storage system and a method for performing voltage balancing between serially connected energy storage modules through direct communication between the energy storage modules without configuring a separate circuit for voltage balancing. The energy storage system according to an aspect of the present invention includes: a plurality of energy storage modules connected in series and each including a plurality of unit cells; and voltage balancing devices that are installed in the respective energy storage modules and communicate with each other to perform voltage balancing between the plurality of energy storage modules.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
The present disclosure relates to an electric double layer capacitor comprising: a bare cell; a case for accommodating the bare cell; a first internal terminal disposed on the top side of the bare cell; a second internal terminal disposed on the bottom side of the bare cell; a first external terminal coupled to the first internal terminal; and a coupling part, which is disposed on the bottom side of the first external terminal and supports the edge of the first internal terminal.
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/84 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof
An energy-storage device may be provided by a module case in which a plurality of accommodation spaces are formed; a plurality of bare cells which are accommodated in the accommodation spaces respectively; and a cover which is coupled to the module case so as to cover the accommodation spaces, wherein: the module case comes into direct contact with the bare cells accommodated in the respective accommodation spaces to support the bare cells; and for each of the accommodation spaces, a pressure absorption ratio obtained by calculating the ratio of the volume of the bare cell to the volume of the accommodation space is 95% or less.
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
09 - Scientific and electric apparatus and instruments
Goods & Services
Electric capacitors; capacitors; ultracapacitors for energy
storage; apparatus and instruments for accumulating and
storing electricity; apparatus and instruments for
accumulating electricity; flow control installations
[electric]; high voltage capacitors; fixed capacitors;
double layer capacitors; rechargers for electric
accumulators; battery charge devices; electrical
controllers; electrical controlling devices; electric
control devices for energy management; electric devices for
controlling energy supply; electric controllers for managing
electrical energy; electric capacitors for telecommunication
apparatus; energy storage apparatus comprised of batteries;
electricity storage apparatus; batteries, electric, for
vehicles; batteries, electric; accumulators [batteries];
rechargeable batteries.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Electric capacitors; capacitors; ultracapacitors for energy storage; apparatus and instruments for accumulating and storing electricity; apparatus and instruments for accumulating electricity; flow control installations [electric]; high voltage capacitors; fixed capacitors; double layer capacitors; rechargers for electric accumulators; battery charge devices; electrical controllers; electrical controlling devices; electric control devices for energy management; electric devices for controlling energy supply; electric controllers for managing electrical energy; electric capacitors for telecommunication apparatus; energy storage apparatus comprised of batteries; electricity storage apparatus; batteries, electric, for vehicles; batteries, electric; accumulators [batteries]; rechargeable batteries.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electric capacitors; capacitors; ultracapacitors for energy storage; apparatus and instruments for accumulating and storing electricity; apparatus and instruments for accumulating electricity; electric flow control installations being electric control devices for energy management; high voltage capacitors; fixed capacitors; double layer capacitors; rechargers for electric accumulators; battery charge devices; electrical controllers; electrical controlling devices; electric control devices for energy management; electric controllers being devices for controlling energy supply; electric controllers for managing electrical energy; electric capacitors for telecommunication apparatus; energy storage apparatus comprised of batteries; electricity storage apparatus; batteries, electric, for vehicles; batteries, electric; accumulators being batteries; rechargeable batteries.
The present invention relates to an energy storage device comprising: a module case in which a plurality of accommodation spaces are formed; a plurality of bare cells which are accommodated in the plurality of accommodation spaces respectively; a cover which is coupled to the module case; and a coupling part which couples the cover to the module case, wherein: the module case comes into direct contact with the bare cells accommodated in the accommodation spaces to support the bare cells; the cover comprises a cover body which is coupled to the module case to cover the accommodation spaces, an outer wall member which protrudes in a first direction toward the module case from the opposite cover surface of the cover body, facing the module case, and an inner wall member which protrude in the first direction from the opposite cover surface and arranged to be spaced apart from the outer wall member; and the coupling part includes a first coupling member which is disposed between the outer wall member and the inner wall member and couples the cover to the module case.
The present disclosure relates to an energy storage device comprising: a housing for accommodating an electrolyte; an electrode element accommodated inside the housing; a case coupled to one side of the housing; and an electrode terminal inserted into the case so as to be electrically connected to the electrode element, wherein the case comprises: a base part having a through-hole into which the electrode terminal is inserted; and a sealing part coupled to the base part so as to seal the space between the base part and the electrode terminal, and the sealing part includes a terminal sealing member located at the through-hole so as to come into close contact with the electrode terminal, thereby sealing the space between the base part and the electrode terminal.
H01G 11/74 - Terminals, e.g. extensions of current collectors
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
H01M 50/131 - Primary casingsJackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
H01M 50/184 - Sealing members characterised by their shape or structure
H01M 50/188 - Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
H01M 50/55 - Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
The present invention relates to an electric double layer capacitor comprising: a bare cell; a case for accommodating the bare cell; a first internal terminal disposed on the top side of the bare cell; a second internal terminal disposed on the bottom side of the bare cell; a first external terminal coupled to the first internal terminal; and a coupling part, which is disposed on the bottom side of the first external terminal and supports the edge of the first internal terminal.
The present invention relates to an energy storage device comprising: a module case in which a plurality of accommodation spaces are formed; a plurality of bare cells which are accommodated in the accommodation spaces respectively; and a cover which is coupled to the module case so as to cover the accommodation spaces, wherein: the module case comes into direct contact with the bare cells accommodated in the respective accommodation spaces to support the bare cells; and for each of the accommodation spaces, a pressure absorption ratio obtained by calculating the ratio of the volume of the bare cell to the volume of the accommodation space is 95% or less.
A fixing device for fixing a plurality of energy storage cells arranged in parallel to each other includes a body having a hole formed through an upper surface and a lower surface thereof to accommodate a part of at least one energy storage cell; a first coupling protrusion and a first accommodation portion formed at a first side surface of the body to be spaced apart in opposite directions by the same distance from a center of the first side surface, the first coupling protrusion and the first accommodation portion being shaped to engage with each other; and a second coupling protrusion and a second accommodation portion formed at a second side surface of the body, which is opposite to the first side surface, to be spaced apart in opposite directions by the same distance from a center of the second side surface.
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/18 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
An energy storage device module comprises: a plurality of energy storage devices having a first energy storage device and a second energy storage device; a connection member configured to connect a first external terminal of the first energy storage device and a second external terminal of the second energy storage device adjacent to the first energy storage device; and a circuit board including a hole that passes through the first external terminal of the first energy storage device, a board protrusion supported by a curling processed portion formed in a body case of the first energy storage device, a first conductive metal layer formed in a region adjacent to the hole and in contact with the connection member, and a second conductive metal layer formed in a region of the board protrusion and in contact with the curling processed portion.
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01M 50/213 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
H01M 50/502 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing
13.
Electric energy storage device having improved installation structure of internal terminal
An electric energy storage device includes a positive electrode internal terminal composed of a plate-shaped terminal body having at least one electrolyte impregnation hole formed therein and a flange, wherein an upper surface of the terminal body and any one surface of the flange come into contact with a cell assembly to couple the positive electrode internal terminal and the cell assembly, wherein a lower surface of the terminal body comes into contact with an inner surface of a lower end of a case, and wherein the flange is pressed by a terminal-fixing beading portion so that the positive electrode internal terminal is fixed in the case.
H01G 11/74 - Terminals, e.g. extensions of current collectors
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
An energy storage device includes: an external terminal having any one of positive and negative polarities and including a protrusion and a first terminal; a case having a polarity opposite to the external terminal and including an extension; a substrate disposed to surround an outer circumference of the protrusion of the external terminal through a hole formed at a center thereof; and a connection member located at an upper surface of the substrate and coupled to the first terminal of the external terminal, wherein the first terminal and the substrate are connected by means of the connection member, and the extension is connected to the substrate. Since positive and negative electrodes of the energy storage device are electrically connected to a substrate having a cell balancing function without a harness or any other member, it is possible to improve the economic feasibility and productivity of the energy storage device module.
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01G 11/08 - Structural combinations, e.g. assembly or connection, of hybrid or EDL capacitors with other electric components, at least one hybrid or EDL capacitor being the main component
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
15.
Electrical energy storage apparatus having improved coupling structure of internal terminal
An electric energy storage device in which a cell assembly having electrode leads is installed in a metal case. The electric energy storage device includes an internal terminal formed with a support, connection ribs and thorough portions, and the electrode leads include a part of electrode leads compressed by the support and the connection ribs of the internal terminal and a part of electrode leads located at the thorough portions of the internal terminal to maintain a shape thereof.
H01G 11/72 - Current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
An electric energy storage device has an inner terminal disposed in a cylindrical metal case and connected to an electrode of a bare cell, wherein the inner terminal includes a plate-shaped terminal body having a circular outer circumference; at least one electrolyte impregnation hole formed through the terminal body in a thickness direction; a flange located at the outer circumference of the terminal body and extending perpendicular to a plane of the terminal body; and a spacer formed to protrude at a periphery of at least one impregnation hole among the impregnation holes or formed by protruding a part of the plane of the terminal body.
H01G 11/26 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
H01G 11/70 - Current collectors characterised by their structure
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
18.
Energy storage device having improved heat-dissipation characteristic
An energy storage device having improved heat-dissipating includes a cell assembly formed by connecting at least two cylindrical energy storage cells in series, a case having an accommodation portion shaped corresponding to an outer surface of the energy storage cells to accommodate the cell assembly, and a heat-dissipating pad installed between an outer surface of the energy storage cells of the cell assembly and an inner surface of the accommodation portion, wherein the case includes at least two case blocks, and wherein the accommodation portion is formed by coupling the case blocks.
H01G 2/00 - Details of capacitors not covered by a single one of groups
H01G 5/019 - Means for correcting the capacitance characteristics
H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
H01G 2/14 - Protection against electric or thermal overload
H01G 11/18 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01M 10/6551 - Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
An ultra capacitor module includes a first ultra capacitor having a first polar terminal provided with a screw thread A formed on an outer peripheral surface, a second ultra capacitor having a second polar terminal provided with a screw thread A formed on an outer peripheral surface, and a connecting member having a screw hole B formed corresponding to the screw thread A on an inner peripheral surface through which the first polar terminal is inserted from one side and the second polar terminal is inserted from the other side to connect the first and second ultra capacitors in series and having a gas emission hole formed from a center to an outer surface.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
H01R 12/62 - Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
An ultra capacitor module includes a first ultra capacitor having a first polar terminal provided with a screw thread A formed on an outer peripheral surface, a second ultra capacitor having a second polar terminal provided with a screw thread A formed on an outer peripheral surface, and a connecting member having a screw hole B formed corresponding to the screw thread A on an inner peripheral surface through which the first polar terminal is inserted from one side and the second polar terminal is inserted from the other side to connect the first and second ultra capacitors in series and having a gas emission hole formed from a center to an outer surface.
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/18 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01R 12/62 - Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
H01G 2/06 - Mountings specially adapted for mounting on a printed-circuit support
21.
Electrical energy storage device and manufacturing method thereof
Disclosed is an electrical energy storage device provided with a metallic casing to receive a bare cell and first and second terminals located outside of the metallic casing corresponding to each electrode of the bare cell, including a plate-like member provided on at least one of the first and second terminals, an inner terminal contacting the plate-like member to form the boundary between the inner terminal and the plate-like member, and a laser welded portion formed along the boundary between the inner terminal and the plate-like member to connect the plate-like member with the inner terminal.
B23K 33/00 - Specially-profiled edge portions of workpieces for making soldering or welding connectionsFilling the seams formed thereby
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
An energy storage device includes an electrode unit in which a cathode having a cathode lead, an anode having an anode lead, and a separator located between the cathode and the anode to separate the cathode and the anode from each other are rolled together; a housing receiving the electrode unit; an electrolyte filled in the housing; an inner terminal arranged in the housing to face the electrode unit; and an outer terminal connected to the inner terminal. A groove is formed in a side of the inner terminal, and a side protrusion is formed on an inner wall of the housing at a location corresponding to the groove.
Disclosed is a terminal connecting device for an energy storage module including a busbar having a body portion formed of a plate having a predetermined length stepped at both ends, and a cell terminal mounting portion having an insert hole at each end of the body portion, and a fastening member formed of a plate to secure the busbar by a screw connection with a cell terminal through the insert hole of the busbar, the fastening member having a nut body portion with a hollow at the center and the outer periphery processed in the shape of a nut, and a nut screw portion having a screw thread formed along the inner periphery of the hollow of the nut body portion, wherein the height of the step of the body portion of the busbar corresponds to the thickness of the nut body portion of the fastening member.
Disclosed is an electrical energy storage device provided with a metallic casing to receive a bare cell and first and second terminals located outside of the metallic casing corresponding to each electrode of the bare cell, including a plate-like member provided on at least one of the first and second terminals, an inner terminal contacting the plate-like member to form the boundary between the inner terminal and the plate-like member, and a laser welded portion formed along the boundary between the inner terminal and the plate-like member to connect the plate-like member with the inner terminal.
An energy storage device includes positive and negative electrodes; positive and negative lead wires connected to the positive and negative electrodes, respectively; a separator composed of unit fibers and positioned between the positive and negative electrodes to electrically insulate the positive and negative electrodes from each other; a housing accommodating the positive and negative electrodes and the separator; an electrolyte received in the housing; and positive and negative terminals connected to the positive and negative lead wires, respectively, wherein an electrolyte permeability index of the separator is larger than an electrolyte permeability index of the electrodes, and the unit fibers of the separator are arranged irregularly so that pores formed in the separator have cross sections of polygonal shapes. Using this energy storage device, the electrolyte of electrodes that gives a direct influence on electric capacity is not depleted. Also, stress failure of the separator may be prevented effectively.
A connecting structure of a lead wire is electrically connected to an electrode in which a polarized electrode layer is formed on a surface of a current collector plate. A region of the electrode, to which the lead wire is to be joined, is free from the polarized electrode layer. The lead wire is joined to the current collector plate by means of stitching and then compressed thereto. This connecting structure may keep a capacitance of a capacitor and improve contact reliability. An electric double layer capacitor having the structure and a method for manufacturing the capacitor are also provided.
