Battery, electric device, method for manufacturing battery, and device for manufacturing battery
Provided are battery, electric device, method for manufacturing battery, and device for manufacturing battery. The battery includes: multiple battery cells, wherein a wall with the largest area among outer walls of each battery cell is provided parallel to horizontal plane; and a binding component, accommodating and binding the multiple battery cells, wherein a reinforcing portion is provided at part of the binding component parallel to the wall with the largest area, and the reinforcing portion reinforces the strength of the binding component, to enhance binding force of the binding component to the multiple battery cells. The binding force to the walls with the largest area among outer walls of the battery cells is enhanced, too much expansion and deformation of the battery cells is avoided, and the failure probability of the battery caused by extrusion to other structural parts of the battery after the battery cells expand is reduced.
1 . A battery, comprising:
a plurality of battery cells, wherein a wall with a largest area among outer walls of each of the battery cells is provided in parallel to a horizontal plane; and
a binding component, configured to accommodate and bind the plurality of battery cells, wherein a reinforcing portion is provided at a part of the binding component parallel to the wall with the largest area, and the reinforcing portion is configured to reinforce a strength of the binding component so as to enhance a binding force of the binding component to walls with the largest area among outer walls of the plurality of battery cells,
wherein the binding component comprises: an upper cover, wherein at least a part of the upper cover is provided at a top of the plurality of battery cells; and a lower case, wherein at least a part of the lower case is provided at a bottom of the plurality of battery cells,
wherein the reinforcing portion is provided at a part of the upper cover provided at the top of the plurality of battery cells, and/or a part of the lower case provided at the bottom of the plurality of battery cells, and
wherein the binding component protrudes in a direction away from the battery cells to form the reinforcing portion, and a recess is formed on a surface of the binding component close to the battery cells in a region opposite to the reinforcing portion.
2 . The battery according to claim 1 , wherein the reinforcing portion is provided correspondingly to a region (R 1 ) between two adjacent battery cells and/or a region (R 2 ) between the battery cells and the binding component.
3 . The battery according to claim 1 , wherein the reinforcing portion is integrally molded with the binding component.
4 . The battery according to claim 1 , wherein the upper cover and the lower case are both provided with the reinforcing portion, and the reinforcing portion on the upper cover and the reinforcing portion on the lower case are corresponding in position in a vertical direction; and
a region between the reinforcing portion on the upper cover and the reinforcing portion on the lower case is filled with an adhesive, so as to connect the reinforcing portion on the upper cover and the reinforcing portion on the lower case.
5 . The battery according to claim 4 , wherein each of the battery cells comprises an end cover and a housing, the end cover is placed perpendicular to the horizontal plane, an R angle is provided at a bottom of the housing away from the end cover, and the R angle is covered by the adhesive.
6 . The battery according to claim 1 , wherein the reinforcing portion comprises a first reinforcing portion, and the first reinforcing portion covers a region between two adjacent battery cells in a vertical direction.
7 . The battery according to claim 6 , wherein each of the battery cells comprises an end cover and a housing, the end cover is placed perpendicular to the horizontal plane, an R angle is provided at a bottom of the housing away from the end cover, and the first reinforcing portion covers adjacent R angles of two adjacent battery cells in the vertical direction.
8 . The battery according to claim 7 , wherein the housing comprises a first wall, and the first wall is perpendicular to the horizontal plane; and
a horizontal distance (L) between an edge of the first reinforcing portion and the first wall is less than or equal to 5 mm.
9 . The battery according to claim 1 , wherein each of the battery cells comprises an electrode assembly, and the electrode assembly comprises a first electrode sheet and a second electrode sheet, wherein
the first electrode sheet and the second electrode sheet are wound around a winding axis and form a winding structure, and the winding axis is parallel to the horizontal plane; or
the electrode assembly comprises a plurality of first electrode sheets and a plurality of second electrode sheets, and the plurality of first electrode sheets and the plurality of second electrode sheets are alternately stacked in a vertical direction; or
the electrode assembly comprises a plurality of second electrode sheets, the first electrode sheet comprises a plurality of stacked segments that are provided in a stacked manner and a plurality of bent segments, each of the bent segments is connected to two adjacent stacked segments, and the plurality of stacked segments and the plurality of second electrode sheets are alternately stacked in the vertical direction.
10 . The battery according to claim 1 , wherein the battery further comprises an upper case, and the upper case and the lower case are snap-fitted and sealed.
11 . The battery according to claim 1 , wherein the lower case is further provided with a fixed beam, and the upper cover is fixed to the fixed beam, so that the plurality of battery cells are bound between the upper cover and the lower case.
12 . An electric device, wherein the electric device comprises the battery according to claim 1 , and the battery is configured to provide electrical energy.
13 . A method for manufacturing the battery according to claim 1 , comprising:
providing the plurality of battery cells;
providing the binding component; and
accommodating the plurality of battery cells in the binding component, and making the binding component bind the plurality of battery cells.