Abstract: The present application provides a battery and an apparatus. The battery includes: a first-type battery cell group and a second-type battery cell group which are connected in series, wherein the first-type battery cell group is composed of multiple first-type batteries connected in parallel, and the second type battery cell group is composed of at least one second type battery cell connected in parallel; the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, and the volume energy density of the first-type battery cell is less than that of the second-type battery cell; and the capacity Cap1 of the first-type battery cell group is greater than the capacity Cap2 of the second-type battery cell group, in which Cap1 is the sum of the capacities of the corresponding first-type battery cells, and Cap2 is the sum of the capacities of the corresponding second-type battery cells.

Abstract: The present disclosure relates to a pouch casing material including two cups forming an electrode assembly receiving portion and formed integrally in one pouch film. The pouch casing material includes an upper pouch member and a lower pouch member formed integrally with each other, and the connection between the upper pouch member and the lower pouch member does not protrude toward the outside. Thus, the total length of a battery is reduced.

Abstract: A formation jig includes a pressing plate configured to press a battery cell, the pressing plate having a first through hole; a pressing support plate configured to support the battery cell when the pressing plate presses an upper or lower portion of the battery cell, the pressing support plate having a second through hole and a third through hole; a first screw configured to pass through first through hole of the pressing plate and the second through hole of the pressing support plate and to move the pressing plate in a gap-adjusting direction by rotation thereof; and a second screw configured to pass through the third through hole of the pressing support plate and to move the pressing support plate in the gap-adjusting direction by rotation thereof. A diameter of the second through hole is larger than a diameter of the first through hole.

Abstract: The present application discloses a functionalized separator, a method for preparing the same, a lithium metal battery, and a device comprising the lithium metal battery. The functionalized separator comprises a porous substrate and a functional film layer provided on at least one side of the porous substrate, wherein the functional film layer comprises inorganic particles which are able to reversibly react with metal lithium to form a lithium alloy.

Abstract: An all solid battery includes a cell stack including a negative electrode, a solid electrolyte layer, and a positive electrode, a case to accommodate the cell stack, and a buffer material to pressure the cell stack in the case.

Abstract: It is suppressed that an active material particle enters into or penetrates through a solid electrolyte layer when an active material layer and the solid electrolyte layer are pressed and that short circuits between a cathode and an anode occur. A method for producing an all solid-state battery includes: a first step of stacking an active material layer over at least one surface of a solid electrolyte layer to constitute a stack; and a second step of pressing the stack to constitute a compact, wherein in the first step, the active material layer contains a secondary particle of an active material, and in the second step, the secondary particle is crushed to primary particles by said pressing, the secondary particle being present in an interfacial portion between the active material layer and the solid electrolyte layer.

Abstract: A battery includes: 1) an anode; 2) a cathode; and 3) a solid or gel electrolyte disposed between the anode and the cathode, wherein the electrolyte includes a supramolecular polymer formed of, or including, molecules crosslinked through dynamic bonds, and each of the molecules includes an ionic ally conductive domain.

Abstract: A method for manufacturing an improved thin film composite solid electrolyte is provided. The method includes spray coating an aqueous suspension of ceramic particles onto a substrate to form a ceramic thin film. The film is sintered to form a porous ceramic structure having an interconnected necked morphology that defines cavities. The cavities are backfilled with an polymer electrolyte, for example a crosslinkable poly(ethylene oxide) (PEO)-based polymer electrolyte. The resulting thin film composite solid electrolyte is highly ionically conductive and mechanically robust with good manufacturability, particularly suitable for, but not limited to lithium metal batteries. The present method represents a departure from conventional mixing-then-casting methods and instead includes the fabrication of a solid electrolyte having a high ceramic volume fraction, high ionic conductivity, low thickness, and good chemical stability with metallic lithium.

Abstract: A lithium ion battery includes a cathode, an anode, and an electrolyte. The electrolyte includes a lithium salt, a solvent, a first additive, and a second additive. The first additive contributes to formation of a cathode solid electrolyte interface (SEI) on a surface of the cathode. The second additive contributes to formation of an anode SEI on a surface of the anode.

Abstract: An electrolyte including a bis-cyclic sulfite compound and a multi-nitrile compound, which can form a stable protective layer on a positive electrode surface to ensure a lithium-ion battery stably operates at a voltage of ?4.45V. The electrolyte can remarkably improve a high temperature intermittent cycle capacity retention ratio and a high temperature resistant safety performance upon circulation of the high-voltage lithium-ion battery.

Abstract: The electrolyte for a lithium secondary battery comprises: a lithium salt; a solvent; and a functional additive, wherein the functional additive comprises naphthalen-1-yl sulfurofluoridate, represented by the following formula 1:

Abstract: The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes 1,2-bis((maleimido)ethane, represented by the following formula 1:

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode core; a positive electrode plate having a positive electrode active material layer formed on the positive electrode core; a negative electrode plate; a flat wound electrode assembly in which the positive electrode plate and the negative electrode plate are wound with a separator therebetween; and a non-aqueous electrolyte, wherein the positive electrode active material is a manganese-containing lithium transition metal composite oxide, the BET specific surface area of the positive electrode active material is 2.0-3.0 m2/g, the total surface area of the positive electrode active material contained in the positive electrode active material layer is 70-90 m2, and the value of A/B is 0.03-0.09 (?mol/m2), where A (?mol) is the total amount of FSO3 contained in the non-aqueous electrolyte, and B (m2) is the total area of the positive electrode active material contained in the positive electrode active material layer.

Abstract: An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material includes a conductive polymer, and the electrolytic solution contains anions and cations. The conductive polymer is capable of doping and dedoping of the anions. The cations includes a lithium ion and a quaternary ammonium ion.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains a lithium salt and isopropyl acetate, and the lithium salt includes lithium bis(fluorosulfonyl)imide, and a content of isopropyl acetate in the liquid electrolyte is 1000 ppm or less with respect to a mass of the liquid electrolyte.

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by Formula 1 and a compound represented by Formula 2.

Abstract: The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes: at least one high-voltage additive selected from a group consisting of lithium bis(phthalato)borate, represented by the following formula 1; hexafluoroglutaric anhydride, represented by the following formula 2; and phosphoric acid tris(2,2,2-trifluoroethyl)ester, represented by the following formula 3:

Abstract: This prismatic non-aqueous electrolyte secondary battery is provided with a negative electrode and a nonaqueous electrolyte. The negative electrode is provided with a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer comprises a first layer containing a first carbon active material, a Si active material and a polyacrylic acid or a salt thereof, and a second layer containing a second carbon active material. The nonaqueous solvent configuring the nonaqueous electrolyte contains a cyclic carbonate. The total content of the cyclic carbonate is 20-30 vol % of the total volume of the nonaqueous solvent, and the content of the ethylene carbonate belonging to the cyclic carbonate is less than or equal to 10 vol % of the total volume of the nonaqueous solvent. The nonaqueous electrolyte contains vinylene carbonate.

Abstract: The present invention relates generally to lithium batteries, and more specifically, to electrolyte compositions within lithium batteries. Some aspects of the invention are related to an electrolyte for a lithium battery. In some embodiments, the electrolyte comprises a lithium salt, an organic solvent, and an aromatic hydrocarbon solvent that is different from the organic solvent. The aromatic hydrocarbon solvent may have limited solubility in the organic solvent and/or a limited solubility for lithium salt, e.g., such that the aromatic hydrocarbon solvent is capable of inducing phase separation of the electrolyte when present in a certain amount. In one set of embodiments, an electrolyte comprising one or more aromatic hydrocarbon may lead to an enhanced battery cycle life, reduced rate of electrolyte degradation, and improved low temperature performance. The subject matter disclosed herein involves, in some cases, the use of the electrolyte in a lithium battery.

Abstract: Articles and methods related to electrochemical cells and/or electrochemical cell components comprising species comprising a conjugated, negatively-charged ring comprising a nitrogen atom and/or reaction products of such species are generally provided. The electrochemical cell may comprise an electrolyte comprising a species comprising a conjugated, negatively-charged ring comprising a nitrogen atom, which may further comprise a species comprising a labile halogen atom. In some embodiments, the electrochemical cell comprises an electrode comprising lithium metal. In some embodiments, the electrochemical cell comprises a protective layer comprising a species comprising a conjugated, negatively-charged ring comprising a nitrogen atom and/or a reaction product thereof.

Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.

Abstract: An apparatus for manufacturing an all-solid-state battery includes: a mold unit which includes a first hole extending vertically so as to have a shape and a width identical with a shape and a width of the all-solid-state battery, and a second hole extending horizontally so as to horizontally communicate with the first hole; a first pressing unit which includes a first protrusion member corresponding to the first hole, which is coupled with an upper part of the mold unit, and which presses downwards raw materials of the all-solid-state battery filling the first hole, and a second pressing unit which includes a second protrusion member corresponding to the first hole, which is coupled with a lower part of the mold unit, and which presses upwards the raw materials of the all-solid-state battery filling the first hole.

Abstract: The non-aqueous electrolyte secondary battery disclosed herein includes the laminated electrode body having cell units in each of which a first electrode, a first separator, a second electrode, and a second separator are stacked. The first electrode has a first active material layer, and the second electrode has a second active material layer. A facing area which faces the second active material layer is formed in a central portion of the first active material layer. The first separator and the first electrode are bonded to each other by a first adhesive, and the first adhesive is not disposed in the facing area and is disposed in an area other than the facing area. The first separator and the second separator are not bonded to the second active material layer, and are joined to each other outside the second electrode.

Abstract: The non-aqueous electrolyte secondary battery includes the electrode body in which cell units each including first and second electrodes and first and second separators are stacked. The first and second electrodes have first and second active material layers, respectively. A facing area in a central portion of the first active material layer faces the second active material layer, and a non-facing area in an outer peripheral edge portion of the first active material layer does not face the second active material layer. The first separator and the first electrode are bonded by a first adhesive. The second electrode is surface-bonded to the first separator and the second separator by a second adhesive. The first adhesive is disposed in an area other than the facing area. In the non-facing area, a path at which the first adhesive is not disposed and through which the non-aqueous electrolyte flows is formed.

Abstract: Embodiments described herein relate generally to systems and methods for continuously and/or semi-continuously manufacturing electrochemical cells with semi-solid electrodes. In some embodiments, a method can include mixing an active material, a conductive material, and an electrolyte to form a semi-solid electrode material. The method further includes drawing a vacuum on the semi-solid electrode material, compressing the semi-solid electrode material to form an electrode brick, and dispensing a portion of the electrode brick onto a current collector via a dispensation device to form an electrode. In some embodiments, the current collector is disposed on a pouch material. In some embodiments, the dispensation device includes a top blade for top edge control and two side plates for side edge control. In some embodiments, the method can further include conveying the electrode through the top blade and the two side plates to shape the electrode.

Abstract: A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length LE of the electrode active material layer, traces a first vertical end surface plot, EVP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length LC of the counter-electrode active material layer, traces a first vertical end surface plot, CEVP1, wherein for at least 60% of the length Lc of the first counter-electrode active material layer (i) the absolute value of a separation distance, SZ1, between the plots EVP1 and CEVP1 measured in the vertical direction is 1000 ?m?|SZ1|?5 ?m.

Abstract: An electrode assembly formed by winding a first electrode plate, a separator and a second electrode plate. The first electrode plate comprises a first current collector and a first active material layer arranged on a surface of the first current collector. A winding terminating end of the first electrode plate is positioned on an outer side of a winding terminating end of the second electrode plate facing away from a winding core. The first active material layer on the winding terminating end of the first electrode plate covers one surface of the first current collector facing toward the second electrode plate, The electrode assembly further comprises a first adhesive member arranged on an outer surface of the electrode assembly. The electrode assembly takes the winding terminating end of the first electrode plate as the tail end. The application further provides a battery having the same.

Abstract: The invention provides an electrode body for a cylindrical lithium battery, which is formed by winding a laminated body including a negative electrode sheet, a first separator, a positive electrode sheet, a plurality of cathode tabs and a plurality of anode tabs, wherein the negative sheet and the positive sheet have a negative electrode coating and a positive electrode coating, respectively. In the present invention, the positive electrode coating is provided on the positive electrode sheet in a specific configuration to increase the coating area of the positive electrode coating, thereby increasing the capacitance of the electrode body.

Abstract: The battery pack includes a battery pack housing operably connectable to a power tool, at least two pouch-type battery cells disposed in a cell holder, a set of battery pack terminals electrically connectable to a set of power tool terminals of the power tool and electrically connected to the at least two pouch-type battery cells, and a lead collection printed circuit board. The lead collection printed circuit board is configured to be disposed forward of a front wall of the cell holder and positioned at a predetermined distance, along a longitudinal axis of the battery pack, from the set of battery pack terminals. The battery pack also includes a state of charge printed circuit board configured to determine a state of charge of one or more battery cells in the battery pack, and a battery management system printed circuit board configured to control the operation of the battery pack.

Abstract: Electrolytes, articles, and methods for reducing gases produced during the operation of an electrochemical cell are generally described. The inclusion of silylated sulfonic acid esters can reduce the amount of gases produced in an electrochemical cell (e.g., a battery).

Abstract: Materials such as poly(vinylidene fluoride) (PVDF) and lithium cobalt (III) oxide (LCO) are recovered and recycled from cathode films isolated from end-of-life batteries, including lithium-ion batteries. Cathode films are immersed in solution including N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidine (NMP), a tetrahydrofuran (THF):NMP mixture, or a THF:DMF mixture. The solution is able to dissolve PVDF, which can then be separated from LCO and a conductive substrate component of the cathode films via alumina column separation. A PVDF product can be precipitated and recovered, while the LCO and conductive substrate can be recovered directly from the alumina column separator. Both the PVDF and LCO are of suitable quality for use in new cathode films. Such recovery is shown to be achievable even at low solid to liquid ratio during the dissolution process.

Abstract: An apparatus for detecting a thermal runaway of a battery for an electric vehicle may include: a battery module including a plurality of battery cells each having a pouch main body and a pair of electrode leads provided at ends of the pouch main body; and a printed circuit board mounted with a gas sensor for sensing a gas amount exhausted from the plurality of battery cells.

Abstract: A recycling method for a positive electrode material includes the following steps: sintering a positive electrode material to be recycled in an oxidizing atmosphere to produce the positive electrode material. Gases in the oxidizing atmosphere include CO2. The positive electrode material produced has a reduced carbon content, great cycle stability and rate performance, the carbon content being ?2.85 wt %, and the 200-cycle capacity retention rate being ?99.0%.

Abstract: Systems and methods are described herein for controlling heat flow between systems of an electric automotive vehicle. An automotive electric vehicle system includes a high voltage battery system including an enclosure, an electric powertrain system, a radiator, coolant lines that permit coolant flow between the high voltage battery system, the power train system and the radiator, one or more valves for routing coolant along the coolant lines, and a controller. The controller is configured to control the one or more valves to control the flow of coolant among a plurality of different, selectable coolant flow states involving the high voltage battery system, the powertrain system and the radiator.

Abstract: The present disclosure discloses a battery casing, a method for manufacturing the same, and a device including a battery casing. A battery casing includes a casing body, a plurality of battery cells accommodated in the casing body, and a fire protection plate which is disposed inside the casing body at least corresponding to the plurality of battery cells and includes a thermal aerosol fire protection layer which includes an aerosol generating agent, wherein a total mass A of the aerosol generating agent in the casing body and a free space volume B of the casing body satisfy a relationship as represented by 0.03 g/L?A/B?8 g/L.

Abstract: The present application discloses a household energy storage constant temperature battery system, comprising: a battery module including a battery pack and at least one group of battery cores; the battery pack includes a heat conducting plate, the heat conducting plate includes a battery end and a first heat dissipation end, and each group of the battery cores are arranged in contact with the battery end and enclosed in the battery pack; a heat dissipation module, including at least one TEC module, a temperature sensor and a control module, wherein each TEC module is arranged in contact with the first heat dissipation end, the temperature sensor is configured to sense temperature of each group of the battery cores, and the control module is configured to control current magnitude and current direction provided to the at least one TEC module according to the temperature of each group of the battery cores.

Abstract: A pouch-type secondary battery includes: an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; and a pouch case including a sealing portion sealed along an edge thereof to accommodate the electrode assembly therein, and a terrace portion formed to extend toward the sealing portion in which an electrode lead is disposed, wherein a notch portion at which a body of a perforator is seated is formed in the sealing portion to form a perforation portion on the terrace portion.

Abstract: A casing material for a power storage device, including a laminate that includes, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The heat-fusible resin layer includes a single layer or a plurality of layers. The heat-fusible resin layer includes at least one layer having a hardness of at least 70 MPa from a cross-section in the lamination direction of the laminate, measured using a nanoindentation method using an indentation load of 100 ?N.

Abstract: Example embodiments of the described technology provide a stretchable electrochemical cell. The electrochemical cell may comprise an anode, a cathode, first and second current collectors electrically coupled to the anode and cathode respectively and a porous separator configured to carry an electrolyte solution. Components of the electrochemical cell may comprise a non-polar polymer or a polymer composition. Two adjacent components may comprise the same non-polar polymer or polymer composition. The electrochemical cell may also comprise an encapsulation at least partially enclosing components of the electrochemical cell.

Abstract: The invention discloses a horizontal lead storage battery include a battery container and a cover; the interior of said battery container is installed with a partition that divides its inner cavity into a plurality of single cells, and each cell is installed with a plate group; the adjacent plate groups are connected by a bridge; said partition has a gap for the bridge to pass through, and a sealing component is installed at the gap; said sealing component comprises two sealing plates with a gap and sealed with said partition; said gap is filled with sealant. The gap of the partition of present invention is provided with two sealing plates, the gap between the two sealing plates is filled with sealant, and the tiny gap between the sealing plate and the partition is sealed by sealing, thereby improving the sealing effect.

Abstract: The invention relates to a safety container for galvanic cells, comprising an outer container and at least one inner container, wherein the inner container forms the transportation space for the galvanic cells, wherein a cavity is formed between the inner container and outer container, wherein the inner container and the cavity between the inner container and outer container are provided with inert filling material, wherein the cavity is designed to be gas-tight in relation to the inner container and gas-tight in relation to the exterior surroundings of the safety container, wherein the inner container is connected to the exterior surroundings via at least one tube through the cavity, wherein a pressure valve and/or a connection to an exhaust-air system is arranged at the outer end of the tube.

Abstract: A battery pack including a rectangular prismatic outer housing including a front and a back, opposed sides, a bottom and an open top, and a lid applied to the open top to define a closed outer hold within the outer housing. The battery pack further includes a power switch, a power port, an input/output, and a display all carried in the front of the outer housing. An inner housing is within the outer hold of the outer housing and includes a basin and a lid applied to the basin to define a closed inner hold within the inner housing. A plurality of battery cells are disposed entirely within the inner hold, and the battery cells are electrically coupled to the power port to provide power to the power port.

Abstract: A battery pack assembly comprising: prismatic cell placed on one of its edges, to form a battery stack of prismatic cells; a battery pack enclosure; one or more battery stacks, each battery stack being an operative vertical configured stack of a plurality of said prismatic cells, every adjacent pair of cells being separated by a configuration of metal plates and thermal pads, characterised in that, each configured stack comprising one or more repeatable stacks, wherein each repeatable stack comprising at least: a first thermal pad (1); a first prismatic cell (2); a second thermal pad (3); a first metal plate (4); thermals pads (12, 14,13) forming lateral sides of prismatic cells (2).

Abstract: A battery including a housing and a cell assembly disposed inside the housing, and the cell assembly includes a plurality of stacked cell units. The cell assembly further includes a fastening band, a first separator, and a fixing plate. The fastening band is disposed on an exterior surface of the cell assembly and is configured to limit an external expansion volume of the cell assembly. The first separator and the fixing plate are disposed on two opposite side surfaces of the cell assembly along a stacking direction of the cell units and are located on an exterior surface of the fastening band, and the first separator is sandwiched between the fastening band and the fixing plat.

Abstract: The present application provides a battery module, a battery pack and a vehicle, the battery module includes a battery and a frame assembly. The frame assembly includes two first splints, two second splints and a first strap. Each first splint includes a plurality of first connecting plates, and the plurality of first connecting plates are arranged side by side in a second direction. One of two adjacent first connecting plates is provided with a first positioning groove, and the other is provided with a first positioning protrusion, and the two adjacent first connecting plates are spliced and connected through a clearance fitting between the first positioning groove and the corresponding first positioning protrusion. This assembly method is simple and fast, which improves a grouping efficiency of the battery module.

Abstract: The disclosure provides an electric energy storage device which includes four energy units with a substantially same voltage value. Each energy unit is provided with a positive electrode and a negative electrode. The electric energy storage device comprises a socket with eight independently arranged electrode terminals that are connected with the four energy units. The disclosure also provides an electric tool system using the electric energy storage device. The electric tool is provided with plugs that may be connected with the four energy units in different states, allowing the electric energy storage device to output multiple voltages.

Abstract: The vehicle battery pack exchange system herein described charges renters for the time use interval, the energy needed to recharge the battery pack, and the battery wear their use has caused. Data on battery wear accelerating stress parameters such as current, voltage, temperature, and state of charge is collected for battery packs rented to vehicle users. Wear rates are estimated from the collected data. Then either users are charged for the wear they cause or wear is limited to some predetermined wear rate and users are charged a predetermined battery wear fee per kWh delivered by the battery pack. In either embodiment drivers are displayed information to adapt their driving to battery wear rates. Renters are charged for battery pack usage time, energy supplied by the rental station, and battery wear providing battery owners a secure return on their investment. This system accommodates both short term and sustained long term rentals.

Abstract: In a battery cell stack spacer compensating a thickness deviation of a stack of battery cells, the battery cell stack spacer includes: a first carrier member providing planar support to a base side of a battery cell; a second carrier member providing planar support to a base side of a further battery cell; one or more tolerance compensation sheets sandwiched between the first carrier member and the second carrier member.

Abstract: A battery pack includes a plurality of battery cells arranged in a longitudinal direction, a heat insulating sheet between two adjacent battery cells of the plurality of battery cells, a first friction sheet located between the heat insulating sheet and a first battery cell of the two adjacent battery cells and including non-adhesive surfaces in direct contact with the heat insulating sheet and the first battery cell, and a restrainer configured to provide a compressive force in the longitudinal direction from opposite ends of the plurality of battery cells.

Abstract: A battery pack supplies an electrically driven work appliance with electrical drive power. The battery pack has: at least one battery cell, wherein the battery cell has at least one safety device, at least one voltage-carrying surface, an insulating lacquer, wherein the insulating lacquer adheres on the voltage-carrying surface, and at least one cover element. The at least one cover element covers the safety device such that no insulating lacquer adheres on and/or in the safety device.