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CN-224217645-U - Battery module and battery pack

CN224217645UCN 224217645 UCN224217645 UCN 224217645UCN-224217645-U

Abstract

The utility model discloses a battery module and a battery pack, wherein the battery module comprises a plurality of battery cells, end plates, a pole seat assembly and an output piece, the battery cells are arranged in the thickness direction of the battery cells to form a battery pack, the end plates are arranged at two opposite ends of the battery pack, the pole seat assembly is connected with the end plates, a first connecting hole is formed in a base assembly in the thickness direction of the battery cells, the output piece is electrically connected with the battery pack, a second connecting hole is formed in the thickness direction of the battery cells, the output piece is electrically connected with the pole seat assembly, and the first connecting hole is communicated with the second connecting hole. According to the utility model, through optimizing the structural design of the battery modules, the problem that the electric connection needs to occupy the height direction space of the battery cells is solved, and the electric connection among the battery modules can be completed without occupying the height direction space of the battery cells, so that the space utilization rate, the assembly convenience and the reliability of the battery pack are improved, and the expected technical effect is achieved.

Inventors

  • YUAN XU

Assignees

  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260508
Application Date
20250430

Claims (10)

  1. 1. A battery module, characterized in that the battery module comprises: A plurality of battery cells arranged along the thickness direction thereof to form a battery pack; End plates disposed at opposite ends of the battery pack; A base component connected with the end plate, provided with a first connecting hole in the thickness direction of the battery cell, and The output piece is electrically connected with the battery pack, a second connecting hole is formed in the output piece in the thickness direction of the battery cell, the output piece is electrically connected with the base component, and the first connecting hole is communicated with the second connecting hole.
  2. 2. The battery module of claim 1, wherein the base assembly includes a fixing base and a post, the end plate is provided with a mounting groove, the fixing base is assembled in the mounting groove and detachably connected with the end plate, the post is assembled in the fixing base, the post is provided with the first connecting hole, and the post is electrically connected with the output member.
  3. 3. The battery module according to claim 2, wherein the mounting groove penetrates through the end plate in the thickness direction of the battery cell, the end plate comprises a baffle plate, the baffle plate is arranged on the side wall of the mounting groove, the baffle plate and the bottom wall of the mounting groove form a slideway, and part of the fixing seat is inserted into the slideway to be in sliding fit with the slideway.
  4. 4. The battery module according to claim 3, wherein one of the end plate and the fixing base is provided with a clamping groove, and the other of the end plate and the fixing base is provided with a clamping protrusion, the clamping protrusion being inserted into the clamping groove.
  5. 5. The battery module according to claim 2, wherein the fixing base includes a main body portion and a fixing portion, the main body portion is provided with a notch, one end of the fixing portion is connected to the notch of the main body portion, and the other end of the fixing portion is in a free state and elastically abuts against the mounting groove.
  6. 6. The battery module according to claim 5, wherein, The battery module further comprises a metal strap which winds the battery pack and the end plate; the fixing seat comprises an extension plate, the extension plate is connected with the main body part, and the metal belt is arranged between the extension plate and the end plate.
  7. 7. The battery module of claim 5, wherein the fixing base further comprises a surrounding plate, the surrounding plate is connected with the main body, a limiting groove is formed by surrounding the surrounding plate and the main body, and a part of the output piece is assembled in the limiting groove and is bent to be electrically connected with the pole.
  8. 8. The battery module of claim 7, wherein the body portion at the limiting groove is provided with a plurality of subtracting grooves.
  9. 9. The battery module according to claim 2, wherein the mounting groove gradually increases in width in a direction away from the battery cell.
  10. 10. A battery pack, wherein the battery pack comprises an electrical component and a plurality of battery modules according to any one of claims 1 to 9, and the electrical component passes through the first connecting hole and the second connecting hole respectively and is electrically connected with the base component and the output component respectively.

Description

Battery module and battery pack Technical Field The utility model relates to the technical field of battery modules, in particular to a battery module and a battery pack. Background Along with the rapid development of the fields of new energy automobiles, energy storage equipment and the like, higher requirements are put forward on the energy density, the space utilization rate and the assembly efficiency of the battery module. The battery module is generally composed of a plurality of cells, end plates, a pole base assembly, an output member, and the like as core components of the battery system. In the prior art, a plurality of battery cells are arranged along the thickness direction to form a battery pack, and mechanical limiting and protection are performed through an end plate, and a pole base assembly and an output piece are used for realizing electric connection between the battery cells and between battery modules. In the existing battery module structure, the electrical connection between the battery cells or between the battery modules generally requires a space for mounting the battery cells in the height direction. For example, the output member or busbar often needs to be disposed on the top or bottom of the battery cell, and connected to the pole base assembly by bolts, welding, or the like. Although the structure can realize electric connection, the connecting structure occupies the space in the height direction of the battery core, so that the overall thickness of the battery module is increased, and the space utilization rate of the battery pack is reduced. Meanwhile, the assembly and maintenance of the electric connection parts are relatively complex, and the assembly efficiency and reliability of the module are easily affected. Therefore, how to further improve the space utilization of the battery pack on the premise of ensuring reliable electrical connection is a technical problem to be solved by those skilled in the art. Disclosure of utility model An object of the present utility model is to provide a battery module and a battery pack, which solve the problem of low space utilization of the battery pack. The battery module comprises a plurality of battery cells, end plates, a pole base assembly and an output piece, wherein the battery cells are arranged in the thickness direction of the battery cells to form a battery pack, the end plates are arranged at two opposite ends of the battery pack, the pole base assembly is connected with the end plates, a first connecting hole is formed in the base assembly in the thickness direction of the battery cells, the output piece is electrically connected with the battery pack, a second connecting hole is formed in the output piece in the thickness direction of the battery cells, the output piece is electrically connected with the pole base assembly, and the first connecting hole is communicated with the second connecting hole. Optionally, the pole base assembly includes fixing base and utmost point post, and the mounting groove has been seted up to the end plate, and the fixing base assembly is in the mounting groove with end plate detachable connection, and the utmost point post assembly is in the fixing base, and first connecting hole has been seted up to the utmost point post, utmost point post and output piece electric connection. Optionally, the mounting groove runs through the end plate along the thickness direction of the battery cell, the end plate comprises a baffle plate, the baffle plate is arranged on the side wall of the mounting groove, the bottom wall of the baffle plate and the bottom wall of the mounting groove form a slideway, and part of the fixing seat is inserted in the slideway to be in sliding fit with the slideway. Optionally, one of the end plate and the fixing seat is provided with a clamping groove, and the other of the end plate and the fixing seat is provided with a clamping protrusion which is inserted into the clamping groove. Optionally, the fixing base includes main part and fixed part, and the main part is provided with the breach, and the one end of fixed part is connected with the breach department of main part, and the other end of fixed part is the free state, and supports with the mounting groove elasticity and hold. Optionally, the battery module further comprises a metal strap, wherein the metal strap winds the battery pack and the end plate; the fixing base comprises an extension plate, the extension plate is connected with the main body part, and the metal belt is arranged between the extension plate and the end plate. Optionally, the fixing base further comprises a coaming, the coaming is connected with the main body part, the coaming and the main body part enclose to form a limit groove, and part of the output piece is assembled in the limit groove and is bent to be electrically connected with the pole. Optionally, a plurality of subtracting grooves are formed in the main body at the limiting groove. Al