Various embodiments of the present invention relate to a secondary battery having a structure for suppressing multi-tab short circuits, and the technical problem to be solved is providing a secondary battery capable of increasing the insulation level of multi-tabs by forming insulating layers on the multi-tabs of an electrode assembly. To this end, the present invention provides a secondary battery comprising: a case; an electrode assembly accommodated inside the case and having multi-tabs; and a cap plate closing the case and having electrode terminals electrically connected to the multi-tabs of the electrode assembly, wherein the surfaces of the multi-tabs are coated with insulating layers.

This application relates to an electrochemical device having safety performance. Specifically, this application provides an electrochemical device, including: an anode, the anode comprising an anode active material layer; a separator; and a polymer layer, wherein the polymer layer is disposed between the anode active material layer and the separator. The polymer layer comprises polymer particles, and the polymer particles according to some embodiments of this application have a sphericity of about 0.70 to about 1.0. This application effectively protects the anode by providing a non-conductive or poorly conductive inactive substance (for example, non-conductive polymer particles) between the anode active material layer and the separator, so as to ensure that is the electrochemical device does not generate an internal short circuit when being impacted, penetrated or squeezed by an external force, which causes a failure of the electrochemical device.

Methods clad battery cells and comprise adhesively bonding at least one crosslinkable adhesive layer of a adhesive film and the at least one bottom side of a battery cell, adhesively bonding the at least one crosslinkable adhesive layer of the adhesive film and at least two first side walls of the battery cell, adhesively bonding the at least one crosslinkable adhesive layer of the adhessive film and at least two second side walls of the battery cell, and adhesively bonding the at least one crosslinkable adhesive layer of the adhesive film and at least one top side of the battery cell, wherein the methods further comprise at least partly crosslinking the crosslinkable adhesive layer.

A method of operating a medical device comprises electrically connecting a power device to the medical device. The method further comprises sensing at least one characteristic of one of the medical device with the power device. The method further comprises adjusting or maintaining one or more characteristics of an electrical connection feature the power device according to the at least one observed characteristic such that the electrical connection features of the power device and medical device are operationally compatible, and operating the power device according to an operational profile associated with the medical device.

An interface for a battery pack and an electrical combination. The interface may include a battery-receiving portion configured to receive a battery pack and including a cavity. The cavity is defined by a pair of sidewalls with rails defining a groove between the rails and a lower surface of the cavity. The rails are stepped or angled along a battery insertion axis and are configured to guide the sliding engagement of a battery pack within the battery-receiving portion.

A control method for an HV contactor and a control unit for the implementation thereof in a battery storage device, preferably a battery storage device of an electric vehicle, wherein in the battery storage device, modules are interconnected via electromechanical components in the form of contactors, fuses, and busbars and are connected to a battery management system for controlling charging and discharging, wherein at least one respective contactor is provided for potential-free isolation at external electrical terminals. The control unit uses HV contactors installed bidirectionally in a positive and negative path of the high-voltage battery storage device to trigger an opening actuation of an HV contactor in order to interrupt a current flow only in a preferred direction of the respective contactor.

A system for battery binding includes a service end electronic device, at least one battery device and at least one carrier device. The service end electronic device is configured to send a carrier identifier corresponding to a carrier device to a battery device for storage therein in order to bind the battery device to the carrier device.

A verification method for battery power supply is to be implemented by a carrier device corresponding to a unique carrier identifier and communicable with a power supply device that stores a reference carrier identifier which corresponds to a carrier device. The verification method is characterized by: by a carrier microcontroller of the carrier device, determining whether or not verification of the power supply device succeeded based on a verification result associated with the unique carrier identifier of the carrier device and the reference carrier identifier stored in the power supply device; and by the carrier microcontroller, controlling the carrier device to utilize electrical energy provided by the power supply device to operate when it is determined that the verification of the power supply device succeeded.

A power source, designed to be bent or flexed during use, may include a layer of anode material having a length greater than a layer of cathode material to accommodate for movement of the cathode or anode layers during flexing of the power source. An enclosure containing the cathode and anode materials may include an inner protective layer proximate to the cathode and anode layers and a water-impermeable layer external to the inner protective layer. The water-impermeable layer may have a pleated or corrugated configuration that may be extended when the power source is bent under application of a flexure stress, preventing damage or deformation to the water-impermeable layer.

For the battery capable of bidirectional output in the embodiments, the two ends of the battery are both provided with a battery anode and a battery cathode respectively, such that any end of the battery can provide an anode output terminal and a cathode output terminal simultaneously. Circuit wiring of the battery can be optimized during use, and the first end of the battery capable of bidirectional output is provided with a first battery anode which protrudes outwards, and the second end thereof is provided with a second battery cathode which protrudes outwards. The battery in has a structure which is similar to that of a common battery, thus the battery can be charged with a common charger, then short circuiting is prevented, and no charger needs to be specially designed.