A multiple layer metallic laminate having more desirable electrical properties as compared to known embodiments includes multiple layers of metallic sheets clad together. The multiple layer laminate composite includes at least a first metallic layer having good soldering properties, such as commercially available nickel or nickel alloys, a second metallic layer having good resistance welding properties, such as commercial available steels or stainless steels, a third metallic layer having low electrical resistivity properties, such as commercially available copper and copper alloys, a fourth metallic layer have good resistance welding properties, such as commercially available steels or stainless steels, and a fifth metallic layer having good soldering properties, such as commercially available nickel or nickel alloys.

The present disclosure provides an electrode lead that ensures safety of a secondary battery when gas is generated within the secondary battery. The electrode lead is included in a pouch-type secondary battery in which outer circumferential parts of a pouch casing are sealed and an electrode assembly is accommodated in a center part of the pouch casing. The electrode lead includes an inner lead at least partially formed of an electrically-conductive material, contacting an electrode tab of the electrode assembly, and interposed between the sealing parts of the pouch casing; and an outer lead disposed outside of the inner lead, at least partially formed of an electrically-conductive material, providing an external terminal connectable to an external device, interposed between the sealing parts of the pouch casing, and configured such that a portion of the outer lead contacts the inner lead and that, when an inner pressure of the pouch-type secondary battery increases, the outer lead is partially deformed and thus the portion of the outer lead is detached from the inner lead.

A tethering system for a power tool and battery pack includes a first tethering attachment assembly configured to be attachable to a power tool, and a second tethering attachment assembly configured to be attachable to a battery pack, which is detachably couplable to a battery pack receptacle on the power tool. A first flexible connector has a first end configured to be attachable to the first tethering attachment assembly and a second end configured to be attachable to a stationary object. A second elongated flexible connector has a first end configured to be attachable to the second tethering attachment assembly and a second end configured to be attachable to the first tethering attachment assembly. If the power tool falls and the battery pack becomes detached from the power tool, the first tethering attachment assembly and first flexible connector prevent the power tool from falling more than a first distance from the stationary object, and the second tethering attachment assembly and the second flexible connector prevent the battery pack from falling more than a second distance from the power tool.

A shunt resistor for enhancing accuracy of current detection in the process of detecting current flowing through the shunt resistor and an apparatus for detecting current including the same. The shunt resistor includes two busbars made of an electrically conductive material and spaced apart a predetermined distance, a first connection element made of an electrically conductive material and configured to be mounted in a first busbar provided on one side among the two busbars, and a second connection element made of an electrically conductive material and configured to be mounted in a second busbar provided on the other side among the two busbars. The first connection element and the second connection element are configured to have an increase or decrease in an area of direct or indirect contact between the first connection element and the second connection element.

A connection apparatus for connecting a battery module and an electronic device is for connecting a battery module in which a plurality of electric cells are arranged in a line and are connected to each other, and an electronic device arranged on a side of the battery module. The connection apparatus includes: a connection bus bar in which a welding plate to be connected to a connection electrode in the battery module is provided at one end, and the other end portion to be connected to a connecting portion of the electronic device is provided at the other end; and an insulating cover that is made of a synthetic resin and is attached to a lower face of the connection bus bar.

An embodiment is directed to a hybrid contact plate arrangement in a battery module that includes a plurality of contact plates configured to be arranged on a given side of a set of battery cells in the battery module, at least one insulation layer configured to provide insulation between each of the plurality of contact plates, wherein the set of battery cells includes a plurality of groups of battery cells, and wherein the plurality of contact plates each include a set of bonding connectors, the sets of bonding connectors being configured to connect to the positive and negative terminals of the plurality of groups of battery cells so as to connect battery cells in each of the plurality of groups of battery cells in parallel with each other, and to connect the plurality of groups of battery cells in series with each other.

An energy storage device and the energy storage module include: an outer case on which an external terminal is mounted; an electrode assembly housed in the outer case; a conductive shaft portion having one end thereof connected to the external terminal; and a conductive plate portion housed in the outer case, to which the other end of the conductive shaft portion is connected, and the electrode assembly is connected. A recessed portion is formed on a first surface of the external terminal on which a bus bar is placed, and a second surface of the external terminal opposedly faces the outer case. One end of the conductive shaft portion is brought into pressure contact with the external terminal in the inside of the recessed portion. The recessed portion formed on the external terminal is gas-tightly covered by the bus bar.

A battery module includes a plurality of batteries stacked together, and a busbar. Each of the plurality of batteries includes a battery-side first structure and a battery-side second structure that regulate the connection of the battery and the busbar. The busbar has a busbar-side first structure and a busbar-side second structure that regulate the connection of the busbar and each of the batteries. If the battery-side first structures of the plurality of batteries are combined with the busbar-side first structure, and the battery-side second structures of the plurality of batteries are combined with the busbar-side second structure, each of the batteries is connected with the busbar. Alternatively, if the battery-side first structure of any one of the batteries is combined with the busbar-side second structure, the one of the batteries or another one of the batteries is not connected with the busbar.

The present disclosure includes a battery module having a stack of electrochemical cells that includes terminals, a housing that receives the stack of electrochemical cells, and a bus bar carrier disposed over the stack of electrochemical cells such that bus bars disposed on the bus bar carrier interface with the terminals of the stack of electrochemical cells. The bus bar carrier includes opposing first and second guide extensions, the stack of electrochemical cells is disposed between the opposing first and second guide extensions, and the opposing first and second guide extensions physically contact a first outer electrochemical cell and a second outer electrochemical cell, respectively, of the stack of electrochemical cells to guide the terminals of the stack of electrochemical cells toward corresponding ones of the bus bars disposed on the bus bar carrier.

A battery module may include a housing, a plurality of battery cells disposed in the housing, a battery terminal extending from the battery module for coupling the battery module with electrical components in the vehicle, and a contactor. A voltage supplied to a relay coil in the contactor may generate a magnetic field to actuate a contactor switch. The battery module may also include a printed circuit board (PCB) disposed in the housing. The PCB may include a relay control circuit configured to control a current flowing across the relay coil, and the relay control circuit may operate in a pull-in mode to transition the contactor switch into a closed position and in a hold mode to maintain the contactor switch in the closed position.