A switching device includes a base module equipped with an electromagnetic drive that has a yoke, a coil and an armature arranged movably relative to the yoke, and that has a switching contact that includes a stationary switching piece and a movable switching piece arranged opposite the stationary switching piece, wherein the switching contact is switchable between an “open” position and a “closed” position via movement of the armature, where the switching device also includes a modular auxiliary switching unit equipped with a contact system that consists of a stationary switching piece and a movable switching piece arranged opposite the stationary switching piece such that the coupling between the base module and the modular auxiliary switching unit is configured such that different distances in the contact system of the auxiliary switching unit are transferrable during a trigger event via an elastic element regardless of the auxiliary switching unit in use.

A movable iron core, a primary attracting and holding coil, a resistor electrically connected to an upstream start-up electric contact, and an auxiliary attracting and holding coil electrically connected to the upstream start-up electric contact are included. The movable iron core displaces a pinion from a separated position to a contact position. After the pinion is displaced from the separated position to the contact position, the upstream start-up electric contact is electrically disconnected from another start-up electric contact to cut off a current to the motor, and the movable iron core displaces the pinion from the contact position to an engaged position with the magnetomotive force of the primary attracting and holding coil and a magnetomotive force of the auxiliary attracting and holding coil. After the pinion is displaced from the contact position to the engaged position, main electric contacts are electrically connected to resume electric connection to the motor.

The electromagnetic switch device for a starter includes: an A connector which forms a starting circuit, which is connected to a starting resistor, and which has an end at which one of a pair of starting circuit contacts is located; a B connector which forms the starting circuit, which is connected to one of a pair of main fixed contacts, and which has an end at which the other of the pair of starting circuit contacts is located; an insulating member electrically insulating the A connector and the B connector from a main fixed core; and an elastic member sealing a contact chamber, wherein the A connector and the B connector are held between a terminal block and the main fixed core with the insulating member and the elastic member interposed therebetween.

A switching device includes a base module equipped with an electromagnetic drive that has a yoke, a coil and an armature arranged movably relative to the yoke, and that has a switching contact that includes a stationary switching piece and a movable switching piece arranged opposite the stationary switching piece, wherein the switching contact is switchable between an open position and a closed position via movement of the armature, where the switching device also includes a modular auxiliary switching unit equipped with a contact system that consists of a stationary switching piece and a movable switching piece arranged opposite the stationary switching piece such that the coupling between the base module and the modular auxiliary switching unit is configured such that different distances in the contact system of the auxiliary switching unit are transferrable during a trigger event via an elastic element regardless of the auxiliary switching unit in use.

A battery pack includes: a first switch connected between a first end of a battery and a first output terminal; a second switch including a first terminal and a second terminal which are connected to a second end of the battery, and a third terminal and a fourth terminal which are connected to a second output terminal, wherein the first terminal and the third terminal are electrically connected when the second switch is turned off, and the second terminal and the fourth terminal are electrically connected when the second switch is turned on; a pre-charge resistor connected between the third terminal of the second switch and the second output terminal; and a controller configured to control the second switch such that the second switch is turned on if a precharging period of time elapses after the first switch is turned on.

A movable iron core, a primary attracting and holding coil, a resistor electrically connected to an upstream start-up electric contact, and an auxiliary attracting and holding coil electrically connected to the upstream start-up electric contact are included. The movable iron core displaces a pinion from a separated position to a contact position. After the pinion is displaced from the separated position to the contact position, the upstream start-up electric contact is electrically disconnected from another start-up electric contact to cut off a current to the motor, and the movable iron core displaces the pinion from the contact position to an engaged position with the magnetomotive force of the primary attracting and holding coil and a magnetomotive force of the auxiliary attracting and holding coil. After the pinion is displaced from the contact position to the engaged position, main electric contacts are electrically connected to resume electric connection to the motor.

The electromagnetic switch device for a starter includes: an A connector which forms a starting circuit, which is connected to a starting resistor, and which has an end at which one of a pair of starting circuit contacts is located; a B connector which forms the starting circuit, which is connected to one of a pair of main fixed contacts, and which has an end at which the other of the pair of starting circuit contacts is located; an insulating member electrically insulating the A connector and the B connector from a main fixed core; and an elastic member sealing a contact chamber, wherein the A connector and the B connector are held between a terminal block and the main fixed core with the insulating member and the elastic member interposed therebetween.

The invention relates to an electric switching device (10) for an energy accumulator in an electric vehicle, comprising a housing (20) inside which at least one switching section (30) that includes two input contacts (32a, 32b) and at least one output contact (34) is arranged, and a rotary component (40) which is mounted in such a way as to be rotatable relative to the housing (20) about a switching axis (42) between at least one OFF position (I), a series-connecting position (II), and an ON position (III); said rotary component (40) includes at least one conductor (44) which has at least two conductor contacts (44a, 44b) and which connects the first input contact (32a) in an electrically conducting manner to the output contact (34) in the series-connecting position (II) and connects the second input contact (32b) in an electrically conducting manner to the output contact (34) of the at least one switching section (30) in the ON position (III).

An electrical junction box includes a casing, a first installation space, a second installation space, and a connection part arranged in the casing the connection part includes a main body, a first connection end, and a second connection end. The main body is used for connecting to a cable; the first connection end, connected to the main body, is located in the first installation space, and is used for connecting to a contactor; and the second connection end, arranged on the first connection end, is located in the second installation space, and may be used for connecting to a resistance wire. The resistance wire may be connected to the second connection end without passing over the junction box, which is not only advantageous for fastening and installing the junction box, but also facilitates the connection and installation of the cable.

Provided is a relay switch device including a relay housing, a first upper fixing terminal and a second upper fixing terminal arranged side by side over an inside and an outside of the relay housing, a first lower fixing terminal electrically connected to the first upper fixing terminal and arranged under the first upper fixing terminal to be apart a predetermined distance from the first upper fixing terminal, and a second lower fixing terminal electrically connected to the second upper fixing terminal and arranged under the second upper fixing terminal to be apart a predetermined distance from the second upper fixing terminal, and a circuit mode switch module provided to selectively contact the first and second upper fixing terminals or the first and second lower fixing terminals by moving a predetermined distance.