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CN-224204164-U - Heat conduction assembly, battery module and battery pack

CN224204164UCN 224204164 UCN224204164 UCN 224204164UCN-224204164-U

Abstract

The utility model provides a heat conduction assembly, a battery module and a battery pack. The heat conduction assembly comprises a heat conduction main body, two connecting structures and a heat conduction main body, wherein the heat conduction main body is provided with a first end and a second end which are oppositely arranged along a first direction, the first end and the second end are respectively provided with a first opening, the connecting structures and the heat conduction main body are of split type structures, one connecting structure is arranged at each of the two first openings, each connecting structure comprises a plug, a slot and a second opening communicated with the first opening, the second opening is configured to allow a tab to penetrate out, the plug laterally protrudes out of the heat conduction main body along the second direction, the slot is positioned in the extending direction of the plug, the insertion opening of the slot is arranged away from the plug, and the plug is configured to have a plug-in structure suitable for being matched with the insertion opening. The technical scheme of the utility model can solve the problem of low efficiency of the grouping process caused by easy dislocation among the battery cores in the grouping process of the solid-state battery modules in the prior art.

Inventors

  • LI MINGHUI

Assignees

  • 上海国轩新能源有限公司

Dates

Publication Date
20260505
Application Date
20250514

Claims (13)

  1. 1. A thermally conductive assembly, comprising: -a thermally conductive body (10) having a mounting cavity (11) for mounting a battery cell (90), said thermally conductive body (10) having oppositely disposed first and second ends in a first direction, said first and second ends each being provided with a first opening (15), said first opening (15) being configured to allow a tab (40) of said battery cell (90) to pass out; The two connection structures (20), connection structure (20) with heat conduction main part (10) are split type structure, two first opening (15) department all is provided with one connection structure (20), connection structure (20) include plug (21), slot (22) and with second opening (23) of first opening (15) intercommunication, second opening (23) are constructed to allow tab (40) are worn out, along the second direction, plug (21) side direction protrusion in heat conduction main part (10), slot (22) are located in the extending direction of plug (21), the socket of slot (22) deviates from plug (21) setting, plug (21) are constructed to have be suitable for with socket structure of slot (22) grafting cooperation.
  2. 2. The heat conducting assembly according to claim 1, wherein the plurality of heat conducting bodies (10) are arranged in sequence along the second direction, and in two adjacent heat conducting bodies (10), the plug (21) of one heat conducting body (10) at the first end is in plug-in fit with the slot (22) of the other heat conducting body (10) at the first end, and the plug (21) of one heat conducting body (10) at the second end is in plug-in fit with the slot (22) of the other heat conducting body (10) at the second end.
  3. 3. The heat conducting assembly according to claim 1 or 2, wherein the connection structure (20) is connected with the heat conducting body (10), and in the first direction, the plug (21) and the socket (22) are both located outside the heat conducting body (10), and the plug (21) and the socket (22) are both located on the outer peripheral side of the second opening (23).
  4. 4. The heat conducting assembly according to claim 1 or 2, wherein the connection structure (20) further comprises a first plate section (24) and a second plate section (25) connected and arranged at an angle, the first plate section (24) being connected with the heat conducting body (10), the plug (21), the slot (22) and the second opening (23) being arranged on the second plate section (25).
  5. 5. The heat conducting assembly according to claim 4, wherein the top and bottom of the second plate section (25) are each provided with at least one first connection hole (251), the first connection holes (251) penetrating the second plate section (25) in the thickness direction of the second plate section (25), and/or wherein a reinforcement structure (50) is connected between the first plate section (24) and the second plate section (25).
  6. 6. The heat conducting assembly according to claim 4, wherein one of the first plate section (24) and the heat conducting body (10) is provided with a second connection hole (60), the other of the first plate section (24) and the heat conducting body (10) is provided with a protrusion (70), the protrusion (70) being insertable into engagement with the second connection hole (60).
  7. 7. The heat conducting assembly according to claim 6, wherein the plurality of protrusions (70) and the plurality of second connecting holes (60) are all plural, the plurality of protrusions (70) are arranged in one-to-one correspondence with the plurality of second connecting holes (60), and the plurality of protrusions (70) are arranged at intervals along the vertical direction.
  8. 8. The heat conducting assembly according to claim 1 or 2, wherein the heat conducting main body (10) has a U-shaped structure, the heat conducting main body (10) comprises a first heat conducting split body (12) and second heat conducting split bodies (13) arranged at two opposite ends of the first heat conducting split body (12), and/or the heat conducting assembly further comprises an insulating structure (80), and the insulating structure (80) is wrapped on the peripheral surface of the heat conducting main body (10).
  9. 9. A battery module, comprising: a cell unit comprising a thermally conductive assembly as claimed in any one of claims 1 to 8 and a plurality of cells.
  10. 10. The battery module according to claim 9, further comprising an annular strap (200), two end plates (100) and two L-shaped separators (300), in the second direction, the battery cell having oppositely disposed first and second sides, one of the two end plates (100) being disposed on the first side, the other of the two end plates (100) being disposed on the second side, the annular strap (200) being wound around the outer circumferences of the two end plates (100), the battery cell having oppositely disposed first and second ends in the first direction, one of the two L-shaped separators (300) being mounted at the first end of the battery cell, the other of the two L-shaped separators (300) being mounted at the second end of the battery cell, the length of the L-shaped separators (300) being the same as the length of the battery cell, and the L-shaped separators (300) being located between the two end plates (100).
  11. 11. The battery module according to claim 10, wherein the end plate (100) and the ring-shaped binder (200) are each made of a carbon fiber composite material.
  12. 12. The battery module according to claim 10, wherein the number of the annular binding bands (200) is at least two, a plurality of limiting protrusions (101) are arranged on each end plate (100), the limiting protrusions (101) are distributed at intervals along the length direction of the end plates (100), limiting grooves (102) are formed between two adjacent limiting protrusions (101), the annular binding bands (200) are located in the limiting grooves (102), and/or lifting holes (103) are formed in the end plates (100).
  13. 13. A battery pack, comprising: The heat conductive assembly according to any one of claims 1 to 8 or the battery module according to any one of claims 9 to 12.

Description

Heat conduction assembly, battery module and battery pack Technical Field The utility model relates to the technical field of batteries, in particular to a heat conduction assembly, a battery module and a battery pack. Background With the increasing global demand for sustainable energy and green traffic, lithium ion batteries are used as the main power batteries and energy storage batteries, and are dominant in the application fields of electric vehicles, energy storage systems and the like due to high energy density, long cycle life and relatively stable working performance. The core composition of the lithium ion battery comprises a positive electrode material, a negative electrode material, a diaphragm and electrolyte. The electrolyte is like the blood of a lithium ion battery, and carries the transmission task of lithium ions between the anode and the cathode, thus playing a vital role in energy conversion and overall performance of the battery. However, the electrolyte is usually mixed by flammable organic solvents such as carbonate and lithium hexafluorophosphate solutes, and these components, although promoting efficient ionic conduction, bring about challenges in terms of safety and stability, especially in extreme conditions of high temperature or external force, are easy to cause internal short circuits, and thus cause the electrolyte to burn, even fire, and seriously threaten the life and property safety of users. In order to solve the above-mentioned safety problem and further improve the energy density and overall performance of the battery, solid-state battery technology has been developed, and has become a hot spot of research in recent years. The solid-state battery abandons the traditional liquid electrolyte, and instead adopts the solid-state electrolyte, so that the electrolyte not only has good ion conductivity, but also greatly improves the safety coefficient of the battery because the electrolyte does not have flammability. In addition, the introduction of the solid electrolyte enables the battery to be more flexible in design, positive and negative electrode materials with high energy density can be better matched, and the non-flowing property of the solid battery enables the solid battery to have remarkable advantages in packaging and integration, and is beneficial to reducing the weight of a system, so that a larger energy density lifting space is displayed in electric vehicles and other mobile equipment, and the solid battery has wide commercial prospect. However, in the prior art, in the process of sequentially stacking a plurality of battery cells according to a preset direction to form a solid-state battery module, dislocation easily occurs between the battery cells, alignment is difficult, and the efficiency of a grouping process is low. Disclosure of utility model The utility model mainly aims to provide a heat conduction assembly, a battery module and a battery pack, which can solve the problem that the efficiency of a grouping process is low because dislocation is easy to occur among battery cells in the grouping process of solid-state battery modules in the prior art. In order to achieve the above object, according to an aspect of the present utility model, there is provided a heat conduction assembly including a heat conduction body having a mounting cavity for mounting a battery cell, the heat conduction body having a first end and a second end disposed opposite to each other in a first direction, the first end and the second end each being provided with a first opening configured to allow a tab of the battery cell to pass out, two connection structures being of a split structure with the heat conduction body, one connection structure being provided at each of the two first openings, the connection structures including a plug, a slot, and a second opening communicating with the first opening, the second opening being configured to allow the tab to pass out, the plug protruding laterally from the heat conduction body in the second direction, the slot being disposed in an extending direction of the plug, the slot being disposed with the slot facing away from the plug, the plug being configured to have a plug structure adapted to be plug-in fit with the slot. Further, the heat conduction main body is a plurality of, and a plurality of heat conduction main bodies are arranged in proper order along the second direction, in two adjacent heat conduction main bodies, the plug that one heat conduction main body is located first end and the slot grafting cooperation that another heat conduction main body is located first end, the plug that one heat conduction main body is located the second end and the slot grafting cooperation that another heat conduction main body is located the second end. Further, the connection structure is connected with the heat conduction main body, and along the first direction, the plug and the slot are all located the outside of heat conduction main body