A battery pack includes: battery cells each including first and second end portions that are opposite each other in a length direction; a case providing an accommodation space in which each battery cell and a cooling fluid for cooling the battery cell are located, the case including a first cover covering the first end portion of the battery cell, the first cover including a first terminal hole through which the first end portion of the battery cell is partially exposed; and first and second sealing members doubly surrounding the first terminal hole from an outside of the first terminal hole to block a cooling fluid leakage passage formed through the first terminal hole. Therefore, while improving heat-dissipating performance, a cooling fluid sealing structure may be provided to the battery pack to prevent cooling fluid leakage from the accommodation space in which the battery cells are accommodated.

A battery pack includes: battery cells each including first and second end portions that are opposite each other in a length direction; a case providing an accommodation space in which each battery cell and a cooling fluid for cooling the battery cell are located, the case including a first cover covering the first end portion of the battery cell, the first cover including a first terminal hole through which the first end portion of the battery cell is partially exposed; and first and second sealing members doubly surrounding the first terminal hole from an outside of the first terminal hole to block a cooling fluid leakage passage formed through the first terminal hole. Therefore, while improving heat-dissipating performance, a cooling fluid sealing structure may be provided to the battery pack to prevent cooling fluid leakage from the accommodation space in which the battery cells are accommodated.

Provided is a battery pack including: an exterior case; a cylindrical battery cell including a positive electrode terminal part at one end and a negative electrode terminal part at the other end; and a metal plate connected to the positive electrode terminal part or the negative electrode terminal part, where the battery cell has a peripheral protrusion around the positive electrode terminal part or the negative electrode terminal part, the metal plate has a protrusion that faces the peripheral protrusion, and the protrusion is disposed in close contact with the whole periphery of the peripheral protrusion, with a first insulating part interposed therebetween.

Provided is a battery pack including: an exterior case; a cylindrical battery cell including a positive electrode terminal part at one end and a negative electrode terminal part at the other end; and a metal plate connected to the positive electrode terminal part or the negative electrode terminal part, where the battery cell has a peripheral protrusion around the positive electrode terminal part or the negative electrode terminal part, the metal plate has a protrusion that faces the peripheral protrusion, and the protrusion is disposed in close contact with the whole periphery of the peripheral protrusion, with a first insulating part interposed therebetween.

The invention relates to an electric battery (1) for a motor vehicle which is electrically or partly electrically driven or a movable or stationary unit, having a battery housing (5) and a plurality of battery cells (2) arranged therein. The aim of the invention is to allow such an electric battery (1) to be produced with minimal costs and technical structural complexity while still having a high degree of operational reliability. This is achieved in that the battery housing (5) is made of an expanded or foamed plastic.

The invention relates to an electric battery (1) for a motor vehicle which is electrically or partly electrically driven or a movable or stationary unit, having a battery housing (5) and a plurality of battery cells (2) arranged therein. The aim of the invention is to allow such an electric battery (1) to be produced with minimal costs and technical structural complexity while still having a high degree of operational reliability. This is achieved in that the battery housing (5) is made of an expanded or foamed plastic.

A cell module has a plurality of electrochemical pouch cells. Each pouch cell has at least a first and second electrode, a separator arranged between the electrodes, and a flexible outer sleeve. Each pouch cell has a circular outer rim and a circular through-hole arranged in the center of the pouch cell. An outer cell terminal is arranged on the outer rim of each pouch cell, and an inner cell terminal is arranged on an inner rim of the through-hole. The cell module has an inner current collector in the form of a cylindrical rod and an outer current collector in the form of a cylinder jacket. The inner current collector extends along a mid-axis of the cell module, and the outer current collector is arranged concentrically with respect to the inner current collector.

A collector plate assembly includes a collector plate and a collector plate support, the collector plate having a welding part for welding to a terminal of a battery unit, and the collector plate being installed in the collector plate support in such a way that the welding part is exposed by the collector plate support. A battery pack includes a housing; a battery support, enclosed by the housing and supported in the housing, the battery support being electrically connectable to an electric tool to supply electric power to the electric tool; and a collector plate assembly including a collector plate support and a collector plate installed in the collector plate support.

A battery includes a battery cell and a bracket. The battery cell includes a case and an end cover that are hermetically connected to each other. A first position-limiting portion is disposed on a side wall of the case. The bracket is provided with a second position-limiting portion that is configured to be snap fitted with the first position-limiting portion to limit a position of the battery cell at least in an axial direction of the battery cell.

A battery includes a battery cell and a bracket. The battery cell includes a case and an end cover that are hermetically connected to each other. A first position-limiting portion is disposed on a side wall of the case. The bracket is provided with a second position-limiting portion that is configured to be snap fitted with the first position-limiting portion to limit a position of the battery cell at least in an axial direction of the battery cell.