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CN-224217678-U - Battery pack and electric equipment

CN224217678UCN 224217678 UCN224217678 UCN 224217678UCN-224217678-U

Abstract

The application discloses a battery pack and electric equipment, wherein the battery pack contains electric elements for controlling on-off and distribution of a circuit in the battery pack by arranging a shell of a cutting unit, the ratio of the length L 1 of the shell in a first direction to the length W of the shell in a second direction is defined as 2.67- 1 /W-32.5, the length of the shell in the first direction is larger than the length of the shell in the second direction, the whole shape of the shell is oblong, the space of the battery pack in the first direction can be fully utilized by the shell, the space occupation ratio of the shell in the second direction is reduced as much as possible, the space utilization rate of the battery pack is improved, the battery pack can contain more battery packs, and the energy density of the battery pack is improved.

Inventors

  • LUO CHUNLING
  • FANG WEIJIA
  • YE JINYONG
  • LUO ZHENG
  • XI BINGRONG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (13)

  1. 1. A battery pack comprising a cutting unit, the cutting unit comprising: The shell is internally provided with a containing cavity, the shell is provided with a first direction and a second direction which are perpendicular to each other, the shell is provided with a length L 1 mm in the first direction, and the shell is provided with a length W mm in the second direction, so that the L 1 /W is more than or equal to 2.67 and less than or equal to 37.5; the plurality of electrical components are arranged in the accommodating cavity at intervals along the first direction.
  2. 2. The battery pack of claim 1, wherein the battery pack satisfies 5.33≤L 1 /W≤21.6.
  3. 3. The battery pack of claim 1, further comprising a case, wherein the case is disposed in the case, and wherein the case has a length L 2 mm in the first direction, and wherein 0.5≤L 1 /L 2 ≤1 is satisfied.
  4. 4. The battery pack of claim 3, wherein 400- 1 -1300 and/or 800- 2 -1500.
  5. 5. The battery pack of claim 1, further comprising a case, wherein the case further has a third direction, and wherein the first direction, the second direction, and the third direction are perpendicular to each other; the housing has a height H 1 mm in the third direction; The box body has a height H 2 mm in the third direction; The method meets the following conditions: H 1 /H 2 is more than or equal to 0.5 and less than or equal to 1.
  6. 6. The battery pack of claim 5, wherein 80≤H 1 ≤200, and/or 80≤H 2 ≤200.
  7. 7. The battery pack of claim 1, wherein 40-150W and/or 400- 1 -1300L.
  8. 8. The battery pack of claim 1, further comprising a battery management unit including a control board disposed in the receiving cavity, the control board being electrically connected to the electrical component; Wherein the control board and the electrical element are arranged at intervals along the second direction.
  9. 9. The battery pack of claim 8, wherein the control board has a length L 3 mm in the first direction, and a height H 3 mm in a third direction; Satisfies that L 3 /H 3 is less than or equal to 0.5 and less than or equal to 33.3, and/or H 2 /H 3 is less than or equal to 1 and less than or equal to 6.7.
  10. 10. The battery pack of claim 9, wherein the battery pack satisfies 5.0≤L 3 /H 3 ≤25.0, and/or 2≤H 2 /H 3 ≤5.
  11. 11. The battery pack of claim 9, wherein 100≤l 3 ≤1000,30≤H 3 ≤200.
  12. 12. The battery pack of claim 1, wherein the electrical component comprises a plurality of relays disposed at intervals along the first direction, the relays having a first surface and a second surface disposed opposite each other in a third direction, the relays having at least two electrical connection terminals disposed on the first surface at intervals along the first direction; the relays comprise main positive relays and main negative relays which are arranged at intervals along the first direction; The battery pack further comprises a plurality of conductive bars; the battery pack also comprises a battery pack, and the battery pack is arranged in the box body; The at least two electrical connection terminals comprise a first connection terminal and a second connection terminal; The first connecting end on the main positive relay is electrically connected with the positive electrode end of the battery pack through the conducting bar; and a second connecting end on the main negative relay is electrically connected with the negative electrode end of the battery pack through one conducting bar.
  13. 13. A powered device comprising a battery pack according to any one of claims 1-12.

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a battery pack and electric equipment. Background BDU (Battery Disconnect Unit), also called a battery cut-off unit, is located inside the battery pack and is a working unit for high-voltage distribution, cut-off and short-circuit protection of the battery system. In the arrangement of the prior BDU in the battery pack box body, excessive space is occupied in the battery pack box body, so that the space utilization rate in the battery pack box body is lower, and the energy density of the battery pack is affected. Disclosure of utility model The application aims to provide a battery pack and electric equipment, which are used for solving the problems of low space utilization rate and reduced energy density of the battery pack caused by excessive space occupation in the battery pack in the conventional battery pack. A first aspect of the embodiment of the application provides a battery pack, which comprises a cutting unit, wherein the cutting unit comprises a shell, a containing cavity is arranged in the shell, the shell is provided with a first direction and a second direction which are perpendicular to each other, the shell is provided with a length L 1 mm in the first direction, the shell is provided with a length W mm in the second direction, L 1/W is 2.67-32.5, and a plurality of electric elements are arranged in the containing cavity at intervals along the first direction. Optionally, the battery pack further comprises a box body, wherein the shell is arranged in the box body, the box body has a length L 2 mm in the first direction, and L 1/L2 is more than or equal to 0.5 and less than or equal to 1. Alternatively to this, the method may comprise, L 1 is more than or equal to 400 and less than or equal to 1300, and/or the number of the groups of groups, L 2 is more than or equal to 800 and less than or equal to 1500. Optionally, the battery pack further comprises a box body, the shell is further provided with a third direction, the first direction, the second direction and the third direction are perpendicular to each other, the shell is provided with a height H 1 mm in the third direction, the box body is provided with a height H 2 mm in the third direction, and the requirements that H 1/H2 is more than or equal to 0.5 and less than or equal to 1 are met. Optionally, 80≤H 1≤200, and/or 80≤H 2≤200. Optionally, W is 40≤W is 150≤and/or L 1 is 400≤L 1300. Optionally, the battery pack further comprises a battery management unit, the battery management unit comprises a control board, the control board is arranged in the accommodating cavity and is electrically connected with the electric element, and the control board and the electric element are arranged at intervals along the second direction. Optionally, the control board has a length L 3 mm in the first direction, the control board has a height H 3 mm in a third direction, and 0.5≤L 3/H3≤33.3 and/or 1≤H 2/H3≤6.7 are satisfied. Alternatively to this, the method may comprise, L 3≤1000,30≤H3 is less than or equal to 100 and less than or equal to 200. The electric element comprises a plurality of relays, the relays are arranged at intervals along the first direction, the relays are provided with a first surface and a second surface which are arranged oppositely in the third direction, the relays are provided with at least two electric connection ends, the at least two electric connection ends are arranged on the first surface at intervals along the first direction, the relays comprise a main positive relay and a main negative relay which are arranged at intervals along the first direction, the battery pack further comprises a plurality of conductive bars, the battery pack further comprises a battery pack, the battery pack is arranged in a box body, the at least two electric connection ends comprise a first connection end and a second connection end, the first connection end on the main positive relay is electrically connected with the positive end of the battery pack through one conductive bar, and the second connection end on the main negative relay is electrically connected with the negative end of the battery pack through one conductive bar. Meanwhile, a second aspect of the embodiment of the application provides a powered device, which comprises the battery pack. In summary, the embodiment of the application provides a battery pack and electric equipment with the battery pack, the battery pack accommodates electric elements for controlling on-off and distribution of circuits in the battery pack by arranging a shell, the ratio of the length L 1 of the shell in a first direction to the length W of the shell in a second direction is defined as 2.67- 1/W-32.5, the length of the shell in the first direction is larger than the length of the shell in the second direction, the whole shape of the shell is in a prolate shape, the space