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CN-121983729-A - End plate assembly, battery pack and electric equipment

CN121983729ACN 121983729 ACN121983729 ACN 121983729ACN-121983729-A

Abstract

The application discloses an end plate assembly, a battery pack and electric equipment, which belong to the technical field of batteries, wherein the end plate assembly comprises a base body, a battery pack and an electric equipment, wherein the base body comprises a main body part and two mounting parts, and the two mounting parts are respectively connected with the opposite ends of the main body part along the length direction of the end plate assembly; each mounting part is provided with a first mounting groove, and two supporting pieces are respectively mounted in the first mounting grooves of the two mounting parts, each supporting piece extends along the height direction of the end plate assembly, and each supporting piece is attached to the groove wall of at least part of the first mounting grooves. Through above-mentioned technical scheme, support piece forms a close connection's integrated configuration with installation department, main part, can bear external load jointly, improves bearing capacity to be equivalent to improving end plate assembly's overall rigidity, intensity, make end plate assembly be difficult for taking place to warp when the atress.

Inventors

  • YANG SHUWEI
  • HU JINBAO
  • WEN YUEKAI
  • CAO FENGFENG
  • GONG MUHONG

Assignees

  • 武汉亿纬储能有限公司

Dates

Publication Date
20260505
Application Date
20251231

Claims (17)

  1. 1. An end plate assembly (1), characterized in that the end plate assembly (1) comprises: The base body (11) comprises a main body part (111) and two mounting parts (113), wherein the two mounting parts (113) are respectively connected to the opposite ends of the main body part (111) along the length direction (x) of the end plate assembly, and each mounting part (113) is provided with a first mounting groove (115); The two supporting pieces (13), two the supporting pieces (13) are respectively installed in the first installation grooves (115) of the two installation parts (113), each supporting piece (13) extends along the height direction (z) of the end plate assembly, and each supporting piece (13) is attached to at least part of the groove walls of the first installation grooves (115).
  2. 2. The end plate assembly (1) according to claim 1, wherein the mounting portion (113) includes a first side wall (116), a second side wall (117), and a third side wall (118) connected in this order, the first side wall (116) being connected to the main body portion (111), the first side wall (116) being disposed opposite to the third side wall (118) in a width direction (y) of the end plate assembly, The first side wall (116), the second side wall (117) and the third side wall (118) form the first mounting groove (115) and the first opening (119), the first mounting groove (115) and the first opening (119) are distributed and communicated along the length direction (x) of the end plate assembly, and the supporting piece (13) is attached to the third side wall (118).
  3. 3. The end plate assembly (1) according to claim 2, wherein the support member (13) comprises a first support wall (131), a second support wall (133) and a third support wall (135) which are sequentially connected, the first support wall (131) is arranged opposite to the second support wall (133), the first support wall (131), the second support wall (133) and the third support wall (135) form a third mounting groove (136) and a second opening (137), the third mounting groove (136) and the second opening (137) are arranged along the width direction (y) of the end plate assembly and are communicated, wherein the second support wall (133) is arranged opposite to the second side wall (117), and the third support wall (135) is attached to the third side wall (118).
  4. 4. An end plate assembly (1) according to claim 3, wherein the end plate assembly (1) further comprises a support boss (14), the support boss (14) being connected to a side of the second support wall (133) facing the second side wall (117), the second support wall (133) being spaced apart from the second side wall (117) along the length (x) of the end plate assembly, the support boss (14) being in abutment with the second side wall (117).
  5. 5. An end plate assembly (1) according to claim 3, characterized in that the first side wall (116), the second side wall (117) and the third side wall (118) are formed with a top opening (1150), the top opening (1150) and the first mounting groove (115) being arranged and communicating in the height direction (z) of the end plate assembly, the end plate assembly (1) further comprising a mounting (15), the mounting (15) being connected with an end of the base body (11), the mounting (15) covering the top opening (1150).
  6. 6. The end plate assembly (1) according to claim 5, wherein the main body portion (111) and the mounting portion (113) form a second mounting groove (112) and a third opening (1121) communicating with the second mounting groove (112), the third opening (1121) and the second mounting groove (112) being arranged in a height direction (z) of the end plate assembly, and the second mounting groove (112) being respectively communicating with the two first openings (119) in a length direction (x) of the end plate assembly.
  7. 7. The endplate assembly (1) of claim 6, wherein the mounting member (15) includes a first portion (151) and a second portion (153) connected, the first portion (151) being connected to the mounting portion (113) and covering the top opening (1150), the second portion (153) being connected to the body portion (111) and covering the third opening (1121).
  8. 8. End plate assembly (1) according to claim 7, wherein the end plate assembly (1) comprises a fastener (16), which fastener (16) is arranged in sequence in the first part (151) and the third mounting groove (136) along the height direction (z) of the end plate assembly, for connecting with the lower case (21) of the battery pack (2).
  9. 9. End plate assembly (1) according to claim 6, wherein the end plate assembly (1) comprises a reinforcement assembly (17), the reinforcement assembly (17) being mounted to the second mounting groove (112) and being connected to the two support members (13) respectively.
  10. 10. End plate assembly (1) according to claim 9, wherein each of the first support walls (131) is provided with a mounting opening (132), the mounting opening (132) being in communication with the third mounting groove (136), the end of the reinforcement assembly (17) being inserted from the mounting opening (132) into the third mounting groove (136).
  11. 11. End plate assembly (1) according to claim 10, wherein at least part of the ends of the reinforcement assembly (17) are in abutment with the groove walls of the third mounting groove (136).
  12. 12. End plate assembly (1) according to claim 9, wherein the reinforcement assembly (17) comprises a first reinforcement (171), a second reinforcement (172), the first reinforcement (171) extending in the length direction (x) of the end plate assembly, the second reinforcement (172) extending in the length direction (x) of the end plate assembly, the first reinforcement (171) and the second reinforcement (172) being arranged in the height direction (z) of the end plate assembly.
  13. 13. An end plate assembly (1) according to claim 7, characterized in that, The end plate assembly (1) further comprises a mounting seat (18), the mounting seat (18) comprises a mounting seat main body (181) and a connecting part (183) which are connected, the second part (153) is provided with a placing hole (1530), The mounting seat main body (181) is positioned at one side of the mounting piece (15) deviating from the supporting piece, and the connecting part (183) penetrates through the placing hole (1530) and is connected with the main body.
  14. 14. End plate assembly (1) according to claim 13, characterized in that the side of the main body part (111) facing the second part (153) is provided with a first limit sub-part (1111), which first limit sub-part (1111) is limit-fittingly with the connection part (183).
  15. 15. The end plate assembly (1) according to claim 13, wherein the main body portion (111) further comprises a third limit sub-portion (184), the third limit sub-portion (184) being connected to the mount main body (181), the third limit sub-portion (184) being located at a side of the connecting portion (183) facing away from the main body portion, the mounting member (15) being located between the third limit sub-portion (184) and the mount main body (181) in a height direction (z) of the end plate assembly.
  16. 16. A battery pack (2), characterized by comprising: A battery module (23) including a plurality of cells (231), a plurality of the cells (231) being stacked in a width direction of the end plate assembly, and Two sets of end plate assemblies (1) according to any one of claims 1-15, wherein the two sets of end plate assemblies (1) are mounted at both ends of the battery module (23), respectively, in the width direction (y) of the end plate assemblies.
  17. 17. A powered device (3) comprising an end plate assembly (1) according to any one of claims 1-15, or comprising a battery pack (2) according to claim 16.

Description

End plate assembly, battery pack and electric equipment Technical Field The application relates to the technical field of batteries, in particular to an end plate assembly, a battery pack and electric equipment. Background The end plate of the battery pack can support the battery module, and structural stability of the battery module can be maintained. In the related art, the sheet metal end plate has low structural strength, and the end plate is easy to deform when receiving the pressure applied by the battery module, so that the effect of restraining the expansion of the battery module by the end plate is poor, and the stability of the whole structure of the battery module is poor. Disclosure of Invention The embodiment of the application provides an end plate assembly, a battery pack and electric equipment, which are used for at least partially solving the technical problems. In order to achieve the above object, according to a first aspect of the present application, there is provided an end plate assembly comprising a base body including a main body portion and two mounting portions connected to opposite ends of the main body portion along a length direction of the end plate assembly, respectively; The two supporting pieces are respectively installed in the first installation grooves of the two installation parts, each supporting piece extends along the height direction of the end plate assembly, and each supporting piece is attached to at least part of the groove walls of the first installation grooves. The main part is close to battery module one side setting, and support piece extends along the direction of height of end plate subassembly, is followed on the direction of length of end plate subassembly, two support piece install respectively in two in the first mounting groove of installation department, that is to say, two support pieces set up respectively at the relative both ends of main part to along the direction of length of end plate subassembly, two support pieces can strengthen the relative both ends of main part. The support piece extending along the height direction of the end plate assembly is arranged in the first mounting groove, so that the expansion force exerted by the battery module born by the main body part can be better shared, and the strength of the end plate assembly in the width direction of the end plate assembly and the length direction of the end plate assembly is improved. At least part of the supporting piece is attached to the groove wall of the first mounting groove, so that the supporting piece, the mounting part and the main body part form a tightly connected combined structure, external load can be borne jointly, the bearing capacity is improved, the integral rigidity and strength of the end plate assembly are improved, and the end plate assembly is not easy to deform when stressed. Optionally, the mounting portion includes a first side wall, a second side wall, and a third side wall that are sequentially connected, the first side wall is connected with the main body portion, the first side wall is disposed opposite to the third side wall along a width direction of the end plate assembly, The first side wall, the second side wall and the third side wall form a first mounting groove and a first opening, the first mounting groove and the first opening are distributed and communicated along the length direction of the end plate assembly, and the supporting piece is attached to the third side wall. The first mounting groove and the first opening formed by the first side wall, the second side wall and the third side wall are convenient to mount and fix the supporting piece, the supporting piece is attached to the third side wall, and the base body is convenient to transfer the expansion force of the battery module from the third side wall to the supporting piece. Optionally, the support piece comprises a first support wall, a second support wall and a third support wall which are sequentially connected, wherein the first support wall is arranged opposite to the second support wall, the first support wall, the second support wall and the third support wall form a third mounting groove and a second opening, the third mounting groove and the second opening are distributed and communicated along the width direction of the end plate assembly, the second support wall is arranged opposite to the second side wall, and the third support wall is attached to the third side wall. The third supporting wall is attached to the third side wall, so that the expansion force of the battery module is conveniently transmitted to the third supporting wall from the third side wall. The second supporting wall and the third supporting wall form a third mounting groove and a second opening, and the third mounting groove and the second opening are distributed and communicated along the width direction of the end plate assembly, so that the supporting piece has the effect of better supporting and