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CN-224217507-U - Battery monomer and electric equipment

CN224217507UCN 224217507 UCN224217507 UCN 224217507UCN-224217507-U

Abstract

The utility model relates to the technical field of batteries and discloses a battery cell and electric equipment, wherein the battery cell comprises a battery core, the battery core comprises a first pole piece, a second pole piece and an isolation layer arranged between the first pole piece and the second pole piece, the first pole piece comprises a first current collector, a first positive electrode area and a first negative electrode area which are arranged on at least the same side surface of the first current collector, a first spacing area is arranged between the first positive electrode area and the first negative electrode area, the second pole piece comprises a second current collector, a second positive electrode area and a second negative electrode area which are arranged on at least the same side surface of the second current collector, a second spacing area is arranged between the second positive electrode area and the second negative electrode area, the first positive electrode area and the second negative electrode area are arranged in opposite directions, and the first spacing area and the second spacing area are arranged in opposite directions. The positive electrode area and the negative electrode area of the pole piece alternately form a plurality of repeating units, so that the positive electrode area and the negative electrode area of the adjacent layers are communicated in a conductive manner to form an internal series loop, and the pole piece is suitable for mass industrialized production.

Inventors

  • ZHANG YOUWEI
  • WANG LONG
  • HE XUAN

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (10)

  1. 1. The battery cell is characterized by comprising an electric core (5), wherein the electric core (5) comprises a first pole piece (1), a second pole piece (2) and an isolating layer (3) arranged between the first pole piece (1) and the second pole piece (2), and the first pole piece (1) and the second pole piece (2) are respectively provided with a first direction (X) and a second direction (Y) which are perpendicular to each other; the first pole piece (1) comprises a first current collector (10), a first positive electrode region (11) and a first negative electrode region (12) which are arranged on at least the same side surface of the first current collector (10), wherein the first positive electrode region (11) and the first negative electrode region (12) are arranged at intervals along the first direction (X), and a first interval region (13) is arranged between the first positive electrode region (11) and the first negative electrode region (12); the second pole piece (2) comprises a second current collector (20), and a second positive pole region (21) and a second negative pole region (22) which are arranged on at least the same side surface of the second current collector (20), wherein the second positive pole region (21) and the second negative pole region (22) are arranged at intervals along the first direction (X), and a second interval region (23) is arranged between the second positive pole region (21) and the second negative pole region (22); Along the direction of stacking the first pole piece (1) and the second pole piece (2), the first positive pole region (11) and the second negative pole region (22) are arranged in opposite directions, the first negative pole region (12) and the second positive pole region (21) are arranged in opposite directions, and the first spacing region (13) and the second spacing region (23) are arranged in opposite directions.
  2. 2. The battery cell according to claim 1, characterized in that the separator layer (3) comprises a solid electrolyte layer (31) or a gel state electrolyte layer (32).
  3. 3. The battery cell according to claim 1 or 2, characterized in that the isolation layer (3) comprises a first sub isolation layer (33) and a second sub isolation layer (34) arranged at intervals, the first sub isolation layer (33) being located between the first positive electrode region (11) and the second negative electrode region (22), the second sub isolation layer (34) being located between the first negative electrode region (12) and the second positive electrode region (21).
  4. 4. The battery cell according to claim 1 or 2, wherein the separator layer (3) comprises at least two layers of structures arranged in a direction in which the first pole piece (1) and the second pole piece (2) are laminated.
  5. 5. The battery cell according to claim 1 or 2, wherein a first tab region (14) is provided at an edge of the first current collector (10), a second tab region (24) is provided at an edge of the second current collector (20), the first tab region (14) protrudes from the second electrode sheet (2) along the first direction (X), and the second tab region (24) protrudes from the first electrode sheet (1) along the first direction (X).
  6. 6. The battery cell according to claim 1 or 2, characterized in that the first spacer region (13) and/or the second spacer region (23) is provided with an insulation (4).
  7. 7. The battery cell according to claim 6, wherein the insulating member (4) comprises a first insulating layer (41) provided on the surface of the first current collector (10) and located at the first spacing region (13); And/or the insulator (4) comprises a second insulating layer (42) arranged on the surface of the second current collector (20) and located in the second spacing region (23); And/or the insulator (4) comprises a third insulating layer (43) filled between the first and second spacers (13, 23).
  8. 8. The battery cell according to claim 7, wherein the third insulating layer (43) is an elastic structure; And/or the isolation layer (3) comprises a solid electrolyte layer (31), the third insulation layer (43) being in abutment with the solid electrolyte layer (31).
  9. 9. The battery cell according to claim 1 or 2, wherein the cell (5) is a wound cell, the length of the first pole piece (1) and the second pole piece (2) in the first direction (X) being smaller than the length of the first pole piece (1) and the second pole piece (2) in the second direction (Y), the first pole piece (1) and the second pole piece (2) being configured to be wound from the second direction (Y) into the wound cell.
  10. 10. A powered device comprising the battery cell of claim 9.

Description

Battery monomer and electric equipment Technical Field The utility model relates to the technical field of batteries, in particular to a battery monomer and electric equipment. Background With the development of battery technology, a solid-state battery is a battery using a solid electrode and a solid electrolyte, has the characteristics of high safety, high energy density, long service life and the like, and becomes an ideal substitute product of a traditional lithium ion battery. The prior art generally uses electrical connectors to connect multiple cells in series, which increases the amount of work required to assemble the cells. Disclosure of utility model The utility model aims to solve the technical problem of realizing internal series connection of solid-state battery cells so as to be suitable for mass industrialized production. In order to solve the technical problems, the utility model provides a technical scheme of a battery monomer: The battery cell comprises a battery cell, wherein the battery cell comprises a first pole piece, a second pole piece and an isolation layer arranged between the first pole piece and the second pole piece, and the first pole piece and the second pole piece are respectively provided with a first direction and a second direction which are perpendicular to each other; the first pole piece comprises a first current collector, and a first positive electrode zone and a first negative electrode zone which are arranged on at least the same side surface of the first current collector, wherein the first positive electrode zone and the first negative electrode zone are arranged at intervals along the first direction, and a first interval zone is arranged between the first positive electrode zone and the first negative electrode zone; The second electrode plate comprises a second current collector, and a second positive electrode region and a second negative electrode region which are arranged on at least the same side surface of the second current collector, wherein the second positive electrode region and the second negative electrode region are arranged at intervals along the first direction, and a second interval region is arranged between the second positive electrode region and the second negative electrode region; Along the direction of stacking the first pole piece and the second pole piece, the first positive pole region and the second negative pole region are arranged in opposite directions, the first negative pole region and the second positive pole region are arranged in opposite directions, and the first interval region and the second interval region are arranged in opposite directions. Further, the separator layer includes a solid electrolyte layer or a gel state electrolyte layer. Further, the isolation layer comprises a first sub isolation layer and a second sub isolation layer which are arranged at intervals, the first sub isolation layer is located between the first positive electrode region and the second negative electrode region, and the second sub isolation layer is located between the first negative electrode region and the second positive electrode region. Further, the isolation layer comprises at least two layers of structures arranged along the lamination direction of the first pole piece and the second pole piece. Further, a first tab area is arranged at the edge of the first current collector, a second tab area is arranged at the edge of the second current collector, the first tab area protrudes from the second pole piece along the first direction, and the second tab area protrudes from the first pole piece along the first direction. Further, the first spacing region and/or the second spacing region is/are provided with an insulating member. Further, the insulating member includes a first insulating layer disposed on a surface of the first current collector and located at the first spacer region; And/or the insulating member comprises a second insulating layer arranged on the surface of the second current collector and positioned at the second spacing region, and/or the insulating member comprises a third insulating layer filled between the first spacing region and the second spacing region. Further, the third insulating layer is of an elastic structure; And/or, the isolation layer comprises a solid electrolyte layer, and the third insulation layer is abutted with the solid electrolyte layer. Further, the battery cell is a winding type battery cell, the lengths of the first pole piece and the second pole piece in the first direction are smaller than those of the first pole piece and the second pole piece in the second direction, and the first pole piece and the second pole piece are used for winding from the second direction to form the winding type battery cell. Compared with the prior art, the battery unit and the electric equipment have the beneficial effects that the battery unit comprises an electric core, the electric core adopts the structural