Abstract: A battery connection module is provided. The battery connection module is adapted to connect a plurality of batteries, the battery connection module includes a plurality of busbars and a single layer wiring flexible circuit board. The plurality of busbars are used to connect a plurality of batteries in series. The single layer wiring flexible circuit board has multiple connector connecting points positioned to a front end portion thereof and a multiple traces, front ends of the multiple traces are respectively connected to the multiple connector connecting points, and rear end connecting points of some of the multiple traces are electrically and mechanically connected to the plurality of busbars, the multiple traces includes at least one rounding trace and at least one rounded trace, the rounding trace rounds the rear end connecting point of the rounded trace so as to round from one side of the at least one rounded trace to the other side of the at least one rounded trace.

Abstract: A fuel cell includes a membrane electrode assembly, gas diffusion layers stacked on each side of the membrane electrode assembly, respectively, separators stacked on the gas diffusion layers, respectively, the separators including channels through which reactant gases move and lands in contact with a respective one of the gas diffusion layers, and a flow path forming part provided on a land surface of one of the lands in contact with the respective one of the gas diffusion layers, the flow path forming part providing a condensate flow path for moving condensate between the land surface and the one of the gas diffusion layers.

Abstract: The present invention is a method for manufacturing a secondary battery. An electrode assembly and an electrolyte are accommodated into a body of a battery case. The body of the battery case has an accommodation part and a gas pocket part, and a passage that extends from the accommodation part to the outside discharges an internal gas from the accommodation part through the gas pocket part. The battery case is seated in a seating step on a support block, which has an inclined part on a side surface thereof, to support the battery case. The body is pressed to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case. This method allows easy discharging of internal gas while reducing discharge of the electrolyte with the gas.

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery includes an organic solvent, LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, an oligomer represented by Formula 1, as a first additive, and a mixed additive of lithium difluorophosphate (LiDFP), fluorobenzene (FB), and tetravinylsilane (TVS), as a second additive.

Abstract: Zinc electrolytic manganese dioxide (EMD) batteries including a high performing flexible chitosan-based gel electrolyte with poly-vinyl alcohol (PVA) and potassium hydroxide (KOH) additives were prepared. The Zn-EMD batteries were constructed using an optimized assembly technique employed to achieve good interfacial contact between the layers. Attaining energy densities between 150-250 Wh/kg (w.r.t cathode mass) is possible for these batteries, encouraging their use in wearable or flexible electronics. Using the chitosan-based gel electrolyte and limited voltage window testing, the prepared Zn-EMD alkaline batteries are among the best reported polymer-based alkaline electrolyte Zn rechargeable batteries.

Abstract: An electrode assembly according to the present disclosure includes one or more unit cells each equipped with a pair of electrodes having different polarities with a separator interposed therebetween, an electrode mixture coated on one or both surfaces of the pair of electrodes, and electrode tabs located on the edges of the respective electrodes and not coated with the electrode mixture, and the electrode tabs include an electrode parallel connection tab and an electrode lead connection tab, and any one or more of the electrode parallel connection tab and the electrode lead connection tab are formed on the electrodes, and an outermost electrode is a negative electrode.

Abstract: According to the present disclosure, a technique capable of suppressing an internal short circuit caused by a peeled metal piece and obtaining a safer secondary battery is provided. An electrode plate (negative electrode plate) disclosed herein includes a negative electrode core including copper or a copper alloy, a negative electrode active material layer applied to a surface of the negative electrode core, and a negative electrode tab protruding to the outside from one end side in a width direction. In the negative electrode plate, a first region having an oxide film having a thickness of 40 nm to 200 nm is formed in a region of 0.01 mm to 0.2 mm from an outer end side of the negative electrode tab toward the inside in the width direction, and the first region 22t1 extends along the outer end side 22ta of the negative electrode tab 22t.

Abstract: A secondary-battery negative electrode includes: a negative electrode collector; and a negative electrode active material layer provided on a surface of the negative electrode collector, and the negative electrode active material layer includes active material particles and amorphous carbon which covers at least parts of surfaces of the active material particles. At least a part of a surface of the amorphous carbon is covered with a film having a lithium ion permeability, the film contains an element M, and the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta.

Abstract: A power continuity unit includes a battery pack, a power converter, and a housing assembly. The battery pack includes a plurality of battery cells with monitoring devices that monitor the voltage of the associated battery cell and trim excess voltage. During daytime, the power converter converts a portion of the direct current (DC) power it receives from an alternative energy device into alternating current (AC) power and directs it to a user, while the remainder is stored in the battery pack. During nighttime, the power converter converts DC power it receives from the battery pack into alternating current (AC) power and directs it to the user. The housing assembly provides structural support and protection to the battery pack; its configuration depends on the type of battery cell being used.

Abstract: To provide a solid-state battery capable of achieving high capacity. A solid-state battery including a multilayer body including a stack of a plurality of electrode layers including positive electrode layers and negative electrode layers and solid electrolyte layers each disposed between the electrode layers, the multilayer body having a columnar shape; and the solid-state battery including a positive electrode terminal and a negative electrode terminal disposed at both end portions of the multilayer body; a positive electrode tab electrically connected to the positive electrode layer and the positive electrode terminal; and a negative electrode tab electrically connected to the negative electrode layer and the negative electrode terminal, wherein the positive electrode tab and the negative electrode tab are spirally wound on an outer peripheral surface of the multilayer body.

Abstract: Batteries according to embodiments of the present technology may include an electrode stack including a separator positioned between an anode and a cathode. The batteries may include an electrolyte. The batteries may include an enclosure extending about the electrode stack and containing the electrolyte. The enclosure may include a rigid housing defining a volume in which the electrode stack and the electrolyte are contained. The rigid housing may define a flange extending about the rigid housing. The enclosure may include a lid extending across the rigid housing. The lid may be characterized by a length and a width, and the lid may define a protrusion extending beyond the length or width on a side of the lid at a location corresponding to a predetermined strain location.

Abstract: Methods of making negative electrode materials for an electrochemical cell that cycles lithium ions are provided. A surface of the electrode material formed of silicon, silicon-containing alloys, tin-containing alloys, or combinations thereof is treated with an oxidant at a first temperature of greater than or equal to about 100° C. to form a continuous intermediate layer comprising oxides. The method also includes pyrolyzing a carbon-containing precursor over the continuous intermediate layer at a second temperature of greater than or equal to about 600° C. to form a continuous carbon coating thereon. The intermediate layer oxides may be transformed to carbides. The continuous carbon coating comprises both graphitic carbon and amorphous carbon and may be a multilayered coating, where the inner layer predominantly includes amorphous carbon and the outer layer predominantly includes graphitic carbon.

Abstract: A battery, method and battery operated portable communication device are provided with protection from excessive current and thermal conditions. A plurality of protection circuits are coupled in series within a common charge/discharge path of the battery. The first protection circuit is configured to block current by opening a switch in response to a voltage drop across the switch and a current sense resistor in the common charge/discharge path. The second protection circuit provides redundancy under conditions where the first switch might fail, where the second switch will block current through the current sense resistor.

Abstract: A battery pack (1) includes a housing (2) and an array of electrochemical cells (80) disposed in the housing (2). The housing (2) includes a container (3) and a lid (30) that closes an open end of the container (3). The container (3) has a base (4), a sidewall (8) that surrounds the base (4), and a spring plate (110) disposed inside the sidewall (8) between the cells (80) and the sidewall (8). The spring plate (110) is free standing within the container (3) and applies a spring force to the cell array that restrains the cells (80) along an axis normal to the surface of the spring plates (110). The lid (30) includes inwardly-protruding pins (50, 60) that further restrain the cells (80) within the housing (2).

Abstract: A negative electrode for a lithium secondary battery and a lithium secondary battery including the negative electrode are disclosed. The negative electrode includes a negative electrode current collector, a first negative electrode active material layer present on the negative electrode current collector, and a second negative electrode active material layer present on the first negative electrode active material layer. The first negative electrode active material layer includes two or more kinds of first negative electrode active materials, and the second negative electrode active material layer includes a second negative electrode active material having swelling that is smaller than that of the first negative electrode active material layer. Therefore, the surface of the negative electrode does not exhibit deformation during pre-lithiation.

Abstract: A method for producing a battery, the method includes a liquid injecting process. In this liquid injecting process includes: a first liquid-injecting step of injecting an electrolytic solution of a first injection amount (V1) determined so that a liquid-level height of the electrolytic solution falls within an intermediate liquid-level range in which the liquid-level height is equal to or higher than a first reference height but is lower than a second reference height while an air pressure in a metal battery case is regulated to a first air pressure; and a second liquid-injecting step of injecting the electrolytic solution in a remaining second injection amount up to a specified amount while increasing the air pressure in the metal battery case to a second air pressure higher than the first air pressure and maintaining the liquid-level height of the electrolytic solution within the intermediate liquid-level range.

Abstract: A secondary battery including: a case including an opening; a top cover assembly including a top cover plate covering the opening and an electrode terminal, the top cover plate including an electrode lead-out hole corresponding to the electrode terminal; an electrode assembly received in the case and including a main body and a tab, the tab being bent relative to a thickness direction of the top cover plate to form a bent portion; and a current collecting wiring board disposed between the top cover plate and the main body and including a first connection portion, a second connection portion, and a transition portion, the first connection portion and the second connection portion extending along a width direction of the top cover plate and being provided opposite to each other, the first connection portion being connected with the electrode terminal, and the second connection portion being connected with the bent portion.

Abstract: The present disclosure provides a battery and a portable electrical device. The battery includes a housing and a battery cell disposed in the housing; the battery cell includes electrodes and tabs, where the electrode includes a current collector and an active material layer, and the current collector includes a coating zone coated and an empty foil zone, and an end of the tab is welded to the empty foil zone by a laser welding process; a surface of the empty foil zone facing away from the tab has a plurality of welding zones arranged at intervals, and each welding zone comprises at least one line-shaped welding mark and a surface of the tab facing away from the empty foil zone has no welding mark. The protrusion of the present disclosure is less likely to pierce a separator between a positive electrode and a negative electrode.

Abstract: Batteries including electrochemical cells, associated components, and arrangements thereof are generally described. In some aspects, batteries with housings that undergo relatively little expansion and contraction even in cases where electrochemical cells in the battery undergo a relatively high degree of expansion and contraction during charging and discharging are provided. Batteries configured to apply relatively high magnitudes and uniform force to electrochemical cells in the battery, while in some cases having high energy densities and a relatively low pack burden, are also provided. In certain aspects, arrangements of electrochemical cells and associated components are generally described. In some aspects, thermally conductive solid articles that can be used for aligning components of the battery are described. In some aspects, thermally insulating and compressible components for battery packs are generally described.

Abstract: A secondary battery includes a rectangular exterior body having an opening and containing a first electrode assembly and a second electrode assembly, a sealing plate sealing the opening, and a positive-electrode current collector. The sealing plate has an electrolytic solution introduction hole. The first electrode assembly includes a first insulating sheet on an outermost surface thereof adjacent to the second electrode assembly. The second electrode assembly includes a second insulating sheet on an outermost surface thereof adjacent to the first electrode assembly. A first tape is attached to both an outermost surface of a first positive-electrode tab group and the first insulating sheet. A second tape is attached to both an outermost surface of a second positive-electrode tab group and the second insulating sheet. At least one of the first tape and the second tape is located to face the electrolytic solution introduction hole.