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CN-224204210-U - Single battery, battery module, energy storage device and vehicle

CN224204210UCN 224204210 UCN224204210 UCN 224204210UCN-224204210-U

Abstract

The embodiment of the utility model provides a single battery, a battery module, an energy storage device and a vehicle, wherein the single battery comprises a battery body, the battery body comprises a first end part and a second end part which are opposite along a second direction, a first pole and a second pole which are opposite in polarity are arranged at the first end part and/or the second end part, and at least one of the center of the first pole and the center of the second pole is not located on the central line of the battery body along the first direction intersecting the second direction. The cost of the battery module can be reduced.

Inventors

  • JI XIWEI
  • ZHANG PEI
  • TAN YOUBIN

Assignees

  • 比亚迪股份有限公司

Dates

Publication Date
20260505
Application Date
20250320

Claims (17)

  1. 1. A single battery is characterized by comprising a battery body (1), wherein the battery body (1) comprises a first end part (11) and a second end part (12) which are opposite along a second direction, The first end (11) and/or the second end (12) are arranged with a first pole (2) and a second pole (3) of opposite polarity; At least one of the center of the first pole (2) and the center of the second pole (3) is not located on the center line of the battery body (1) along a first direction intersecting the second direction.
  2. 2. The single cell according to claim 1, characterized in that on the first end (11) or the second end (12), the first pole (2) and the second pole (3) are arranged at intervals along the first direction and/or a third direction, which intersects a plane in which the first direction and the second direction lie.
  3. 3. The unit cell according to claim 1, wherein the cell body (1) has a first side and a second side located at both sides of its center line in the first direction; -on the first end (11) or the second end (12), the centre of the first pole (2) is located on the first side and the centre of the second pole (3) is located on the second side.
  4. 4. The single cell according to claim 1, characterized in that the first end (11) and the second end (12) are each provided with the first pole (2) and the second pole (3).
  5. 5. The unit cell according to any one of claims 2-4, characterized in that the first pole (2) on the first end (11) and the first pole (2) on the second end (12) are oppositely arranged in the second direction; And/or the second post (3) on the first end (11) is arranged opposite the second post (3) on the second end (12) along the second direction.
  6. 6. The unit cell according to any one of claims 2-4, characterized in that the first pole (2) on the first end (11) and the second pole (3) on the second end (12) are arranged opposite in a second direction; And/or the second pole (3) on the first end (11) is arranged opposite the first pole (2) on the second end (12) along the second direction.
  7. 7. The unit cell according to any one of claims 1-6, characterized in that the distance between the center of the first pole (2) and the center of the second pole (3) in the first direction on the first end portion (11) or the second end portion (12) is U, 0<U-50 mm.
  8. 8. The single cell according to any one of claims 1-7, wherein the minimum distance from the edge of the first pole (2) to the edge of the cell body (1) in the first direction is X1, X1 being equal to or larger than 3mm; and/or, along the first direction, the minimum distance between the edge of the second pole (3) and the edge of the battery body (1) is X2, and X2 is more than or equal to 3mm.
  9. 9. The unit cell according to any one of claims 1 to 8, wherein the length of the cell body (1) in the second direction is L,600mm ∈l ∈2500mm.
  10. 10. The unit cell according to any one of claims 1-9, wherein the battery body (1) comprises a housing and a battery cell (13) arranged in the housing, the battery cell (13) comprising a third end (133) and a fourth end (134) opposite in the second direction, the third end (133) corresponding to the first end (11) and the fourth end (134) corresponding to the second end (12); The third end part (133) and/or the fourth end part (134) are/is provided with a first tab (131) and a second tab (132) with opposite polarities, the first tab (131) on the third end part (133) is electrically connected with the first pole (2) on the first end part (11), the second tab (132) on the third end part (133) is electrically connected with the second pole (3) on the first end part (11), the first tab (131) on the fourth end part (134) is electrically connected with the first pole (2) on the second end part (12), and the second tab (132) on the fourth end part (134) is electrically connected with the second pole (3) on the second end part (12).
  11. 11. The unit cell according to claim 10, characterized in that the bending directions of the first tab (131) and the second tab (132) on the third end portion (133) are opposite; and/or the bending directions of the first lug (131) and the second lug (132) on the fourth end part (134) are opposite.
  12. 12. The unit cell according to claim 10, characterized in that the first tab (131) and the second tab (132) on the third end portion (133) are disposed at intervals; And/or the first lug (131) and the second lug (132) on the fourth end part (134) are arranged at intervals.
  13. 13. The unit cell according to any one of claims 1-12, wherein the thickness of the cell body (1) in the first direction is H, the length of the cell body (1) in the second direction is L, and the width of the cell body (1) in the third direction is W, L > W > H; The third direction intersects a plane in which the first direction and the second direction are located.
  14. 14. A battery module comprising a plurality of the single cells of any one of claims 1-13.
  15. 15. The battery module according to claim 14, further comprising a plurality of electrical connectors (4), wherein a plurality of the unit cells are stacked in a first direction; wherein two adjacent single batteries are respectively a first single battery and a second single battery; The electric connecting piece (4) is electrically connected with the first pole (2) of the first single battery and the first pole (2) of the second single battery, or the electric connecting piece (4) is electrically connected with the first pole (2) of the first single battery and the second pole (3) of the second single battery.
  16. 16. An energy storage device comprising the single cell of any one of claims 1-13 or the battery module of any one of claims 14-15.
  17. 17. A vehicle comprising a battery module according to any one of claims 14-15 or an energy storage device according to claim 16.

Description

Single battery, battery module, energy storage device and vehicle Technical Field The utility model relates to the technical field of batteries, in particular to a single battery, a battery module, an energy storage device and a vehicle. Background Currently, batteries with large capacity and large size gradually become a development trend, however, as the size of the battery increases, the number of unit batteries increases, and at the same time, the amount of connectors for connecting the unit batteries increases, resulting in higher assembly costs of the battery. Disclosure of utility model In view of the foregoing, embodiments of the present utility model are directed to providing a single battery, a battery module, an energy storage device, and a vehicle that overcome or at least partially solve the foregoing problems. In order to solve the problems, the embodiment of the utility model discloses a single battery, which comprises a battery body, wherein the battery body comprises a first end part and a second end part which are opposite along a second direction, The first end and/or the second end are/is provided with a first pole and a second pole with opposite polarities; At least one of the center of the first pole and the center of the second pole is not located on the center line of the battery body along a first direction intersecting the second direction. Optionally, on the first end or the second end, the first pole and the second pole are arranged at intervals along the first direction and/or the third direction, and the third direction intersects with a plane where the first direction and the second direction are located. Optionally, along the first direction, the battery body has a first side and a second side located on both sides of its center line; the first end or the second end is provided with a center of the first pole on the first side, and a center of the second pole on the second side. Optionally, the first end and the second end are each arranged with the first pole and the second pole. Optionally, the first pole on the first end and the first pole on the second end are oppositely arranged along a second direction; And/or the second pole on the first end is arranged opposite to the second pole on the second end along the second direction. Optionally, the first pole on the first end and the second pole on the second end are oppositely arranged along a second direction; And/or the second pole on the first end is arranged opposite to the first pole on the second end along the second direction. Optionally, on the first end or the second end, a distance between a center of the first pole and a center of the second pole in the first direction is U,0<U is equal to or less than 50mm. Optionally, along the first direction, the minimum distance between the edge of the first pole and the edge of the battery body is X1, and X1 is more than or equal to 3mm; And/or, along the first direction, the minimum distance between the edge of the second pole and the edge of the battery body is X2, and X2 is more than or equal to 3mm. Optionally, the length of the battery body in the second direction is L, and L is more than or equal to 600mm and less than or equal to 2500mm. Optionally, the battery body includes a housing and a battery cell disposed in the housing, the battery cell includes a third end portion and a fourth end portion opposite along the second direction, the third end portion corresponds to the first end portion, and the fourth end portion corresponds to the second end portion; The third end part and/or the fourth end part are/is provided with a first tab and a second tab with opposite polarities, the first tab on the third end part is electrically connected with the first pole on the first end part, the second tab on the third end part is electrically connected with the second pole on the first end part, the first tab on the fourth end part is electrically connected with the first pole on the second end part, and the second tab on the fourth end part is electrically connected with the second pole on the second end part. Optionally, the bending directions of the first tab and the second tab on the third end part are opposite; and/or the bending directions of the first tab and the second tab on the fourth end part are opposite. Optionally, the first tab and the second tab on the third end are spaced apart; and/or the first tab and the second tab on the fourth end part are arranged at intervals. Optionally, the thickness of the battery body in the first direction is H, the length of the battery body in the second direction is L, and the width of the battery body in the third direction is W, L > W > H; The third direction intersects a plane in which the first direction and the second direction are located. In a second aspect, the utility model discloses a battery module comprising a plurality of single batteries. Optionally, the battery module further comprises a plurality of electric connec