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CN-224217542-U - Battery pack

CN224217542UCN 224217542 UCN224217542 UCN 224217542UCN-224217542-U

Abstract

The utility model discloses a battery pack, and belongs to the technical field of batteries. The battery pack comprises at least two electric cores, a tab, a temperature control piece and a temperature control piece, wherein the electric cores are sequentially arranged, electrodes and pressure release pieces are arranged on the first end face of each electric core at intervals, the tab is connected with the electrodes of two adjacent electric cores to connect the two adjacent electric cores in series or in parallel, the temperature control piece comprises a plurality of temperature control pieces, any two of the temperature control pieces are arranged at intervals, the temperature control piece comprises first temperature control pieces, each first temperature control piece is connected with the first end faces of the two adjacent electric cores, and the projection of the first temperature control pieces on the first end faces is located in the area where the two adjacent electric cores are close to each other so as to avoid the electrodes and the pressure release pieces.

Inventors

  • Wu Shumeng
  • HUANG BAOHUA
  • ZHANG HUIGUANG
  • DENG JIE

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. A battery pack, comprising: The battery comprises at least two battery cells (10), wherein the at least two battery cells (10) are sequentially arranged, and an electrode (11) and a pressure release piece (12) are arranged on the first end face of each battery cell (10) at intervals; A tab (30), wherein the tab (30) is connected with the electrodes (11) of two adjacent electric cores (10) so as to connect the two adjacent electric cores (10) in series or in parallel; Temperature control piece (20), temperature control piece (20) are including a plurality of, and is a plurality of arbitrary two intervals settings in temperature control piece (20), temperature control piece (20) are including first temperature control piece (24), every first temperature control piece (24) are connected with two adjacent first terminal surfaces of electric core (10), just first temperature control piece (24) are in the projection of first terminal surface is located two adjacent electric core (10) are close to each other regional, so as to dodge electrode (11) with pressure release piece (12).
  2. 2. The battery pack according to claim 1, wherein the temperature control member (20) further comprises a second temperature control member (25), Each second temperature control (25) is connected with a first end face of the cell (10) closest to the outer side, and the projection of the second temperature control (25) on the first end face is located in an edge area, away from the adjacent cell (10), of the cell (10) closest to the outer side, so that the electrode (11) and the pressure release piece (12) are avoided.
  3. 3. The battery pack according to claim 2, wherein the first temperature control (24) and the second temperature control (25) are arranged between the battery cell (10) and the tab (30), and/or the first temperature control (24) and the second temperature control (25) are arranged on a side of the tab (30) away from the battery cell (10).
  4. 4. The battery pack according to claim 2, wherein the battery pack has a first direction (X) and a second direction (Y) intersecting, the first direction (X) being a length direction of the first end face, the second direction (Y) being a width direction of the first end face; At least two electric cores (10) are sequentially arranged along the second direction (Y), and the first temperature control (24) and the second temperature control (25) extend along the first direction (X); And/or, at least two electric cores (10) are sequentially arranged along the first direction (X), and the first temperature control (24) and the second temperature control (25) extend along the second direction (Y).
  5. 5. The battery pack according to claim 2, further comprising a frame body (40), wherein a first side beam (41) and a second side beam (42) which are arranged at opposite intervals are arranged in the frame body (40), and an end plate is connected between the first side beam (41) and the second side beam (42), the first side beam (41), the end plate and the second side beam (42) enclose to form a first accommodating cavity, the battery cell (10) is arranged in the first accommodating cavity, and the first temperature control (24) and the second temperature control (25) are detachably connected to the first side beam (41) and/or the second side beam (42); Or the first temperature control (24) and the second temperature control (25) are adhered to the first end face of the battery cell (10).
  6. 6. The battery pack according to claim 4, wherein, in the first direction (X) or the second direction (Y), a distance between an electrode (11) of one of the adjacent two cells (10) and a side surface of the cell (10) adjacent to the other cell (10) is D, a width of the first temperature control (24) is W, and a gap between the adjacent two cells (10) is D, so that W is equal to or less than 2d+d.
  7. 7. The battery pack according to claim 2, wherein the heights of the first temperature control (24) and the second temperature control (25) are H along the height direction of the electric core (10), the height of the portion of the electrode (11) leaking out of the first end face of the electric core (10) is H, H is less than or equal to 5mm, and/or H is less than or equal to H.
  8. 8. The battery pack according to claim 2, wherein the first temperature control (24) comprises a first temperature control body (241) and a first protruding portion (242), the first protruding portion (242) is connected to one side of the first temperature control body (241) close to the electric core (10), the first temperature control body (241) is arranged at a position of the electric core (10) close to the first end face, and the first protruding portion (242) is embedded between two adjacent electric cores (10); The second temperature control part (25) comprises a second temperature control part body (251) and a second protruding part (252), the second protruding part (252) is connected to one side, close to the battery cell (10), of the second temperature control part body (251), the second temperature control part body (251) is arranged at the position, close to the first end face, of the battery cell (10), and the second protruding part (252) is arranged at one side, closest to the outside, of the battery cell (10).
  9. 9. The battery pack according to claim 8, wherein the first protrusion (242) and the second protrusion (252) each have a height H2 in the height direction of the battery cell (10), the battery cell (10) has a height H3, The first temperature control piece (24) and the second temperature control piece (25) are metal pieces, and H2 is less than or equal to 1/3H3; or the first temperature control piece (24) and the second temperature control piece (25) are plastic pieces, so that H2 is less than or equal to H3.
  10. 10. The battery pack according to claim 2, wherein a plurality of flow channels (23) are arranged in the first temperature control (24) and the second temperature control (25), and the extending direction of the flow channels (23) is the same as the extending direction of the first temperature control (24) and the second temperature control (25); the flow channel (23) is at least one of a rectangular flow channel, a triangular flow channel and a parallelogram flow channel.

Description

Battery pack Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack. Background The safety of the power battery as a power source of a new energy automobile is widely paid attention to in the industry. The power battery comprises a battery module, wherein the battery module comprises a plurality of electric cores, and the electric cores are connected in series or in parallel. In order to reduce the potential safety hazard caused by the too high or too low temperature of the battery module in the working process. In the related art, the power battery further comprises a temperature control plate, wherein the temperature control plate is attached to the bottom surface of the battery module, so that the temperature of the battery module is adjusted through the temperature control plate, and the battery module is prevented from being too high or too low in temperature. However, the above arrangement results in low space utilization of the power cell and low energy density. Disclosure of utility model The utility model discloses a battery pack, which aims to solve or at least partially solve the problems of low space utilization rate and low energy density of a power battery in the prior art. In order to solve the technical problems, the utility model is realized as follows: The utility model discloses a battery pack which comprises at least two electric cores, a tab, a temperature control piece and a temperature control piece, wherein the at least two electric cores are sequentially arranged, an electrode and a pressure release piece are arranged on a first end face of each electric core at intervals, the tab is connected with electrodes of two adjacent electric cores to be connected in series or in parallel, the two adjacent electric cores are arranged at intervals, the temperature control piece comprises a plurality of temperature control pieces, any two of the temperature control pieces are arranged at intervals, the temperature control piece comprises a first temperature control piece, each first temperature control piece is connected with first end faces of the two adjacent electric cores, and projections of the first temperature control pieces on the first end faces are located in areas where the two adjacent electric cores are close to each other so as to avoid the electrodes and the pressure release piece. Optionally, the temperature control unit further includes second temperature control units, each second temperature control unit is connected with a first end face of the cell closest to the outer side, and a projection of the second temperature control unit on the first end face is located in an edge area, away from the adjacent cell, of the cell closest to the outer side, so as to avoid the electrode and the pressure release member. Optionally, the first temperature control piece and the second temperature control piece are arranged between the battery cell and the tab, and/or the first temperature control piece and the second temperature control piece are arranged on one side of the tab away from the battery cell. Optionally, the battery pack is provided with a first direction and a second direction which are intersected, the first direction is the length direction of the first end face, the second direction is the width direction of the first end face, at least two electric cores are sequentially arranged along the second direction, the first temperature control and the second temperature control extend along the first direction, and/or at least two electric cores are sequentially arranged along the first direction, and the first temperature control and the second temperature control extend along the second direction. Optionally, the battery pack further comprises a frame body, wherein a first side beam, a second side beam and an end plate are arranged in the frame body at intervals, the end plate is connected between the first side beam and the second side beam, the first side beam, the end plate and the second side beam enclose to form a first accommodating cavity, the battery cell is arranged in the first accommodating cavity, the first temperature control and the second temperature control are detachably connected to the first side beam and/or the second side beam, or the first temperature control and the second temperature control are adhered to the first end face of the battery cell. Optionally, along the first direction or the second direction, a distance between an electrode of one cell and a side surface of the other cell, which is close to the other cell, of two adjacent cells is D, a width of the first temperature control is W, and a gap between two adjacent cells is D, so that W is less than or equal to 2d+d. Optionally, along the height direction of the battery core, the heights of the first temperature control and the second temperature control are H, the height of the electrode leaking out of the first end face part of the batt