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CN-224232830-U - CTB battery pack and electric automobile

CN224232830UCN 224232830 UCN224232830 UCN 224232830UCN-224232830-U

Abstract

The application provides a CTB battery pack and an electric automobile. The CTB battery pack comprises a battery module and a composite support assembly, wherein the battery module comprises at least two battery cells, the composite support assembly is positioned on the battery module and comprises a first support piece and a second support piece, the first support piece is arranged on the second support piece, the second support piece is provided with a separation part, and the separation part extends towards the direction of the battery module and is positioned between two adjacent battery cells. The application has good trampling prevention effect and high integration level.

Inventors

  • LIANG XINLONG
  • LI XIN
  • GAO LINGLEI
  • ZHANG LONG

Assignees

  • 合肥国轩高科动力能源有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A CTB battery pack (100), comprising: A battery module (110) comprising at least two electric cells (111); The composite support assembly (120) is located on the battery module (110), the composite support assembly (120) comprises a first support piece (121) and a second support piece (122), the first support piece (121) is arranged on the second support piece (122), the second support piece (122) is provided with a separation part (1221), and the separation part (1221) extends towards the direction of the battery module (110) and is located between two adjacent battery cells (111).
  2. 2. The CTB battery pack (100) according to claim 1, wherein the CTB battery pack (100) further comprises at least two glue layer pieces; The second supporting piece (122) is further provided with at least two glue storage grooves (1222), at least two glue storage grooves (1222) are respectively positioned on two opposite sides of the isolation part (1221) along the arrangement direction of the battery module (110), and the glue layer piece is positioned in the glue storage grooves (1222), so that the battery cell (111) is attached to the second supporting piece (122) through the glue layer piece.
  3. 3. The CTB battery pack (100) according to claim 2, wherein the second support (122) further has a flange (1223), the separator (1221) and the bottom of the second support (122) enclosing the glue reservoir (1222).
  4. 4. The CTB battery pack (100) according to claim 3, wherein the separator (1221) is a separator; The length of the flange (1223) is smaller than the length of the separator (1221) along the thickness direction of the CTB battery pack (100).
  5. 5. The CTB battery pack (100) according to any of claims 1-4, wherein the second support (122) has a recess (1224), the first support (121) has a projection (12121), the projection (12121) extends in a direction facing the second support (122) and snaps into the recess (1224) such that the first support (121) is disposed in the second support (122).
  6. 6. The CTB battery pack (100) according to claim 5, wherein the first support (121) comprises a first support plate (1211) and a second support plate (1212) connected, the tab (12121) being provided on the second support plate (1212).
  7. 7. The CTB battery pack (100) according to claim 6, wherein the second support plate (1212) is provided with a plurality of ribs (12122) and a plurality of ribs (12123); A plurality of convex ribs (12122) and a plurality of concave ribs (12123) are staggered along the extending direction of the second support plate (1212); The convex rib (12122) is abutted against the first support plate (1211), and a gap is formed between the concave rib (12123) and the first support plate (1211).
  8. 8. The CTB battery pack (100) according to any of claims 1-4, wherein the CTB battery pack (100) further comprises a first buffer (130) and a second buffer (140); the first buffer piece (130) is arranged on the first support piece (121), and the second buffer piece (140) is arranged between the second support piece (122) and the battery cell (111).
  9. 9. The CTB battery pack (100) according to any of claims 1-4, wherein the first support (121) is a sheet metal part and/or, The second supporting piece (122) is a plastic piece.
  10. 10. An electric vehicle characterized by comprising the CTB battery pack (100) according to any one of claims 1 to 9.

Description

CTB battery pack and electric automobile Technical Field The application relates to a CTB battery pack and an electric automobile, and belongs to the technical field of new energy batteries. Background As the integration of electric vehicles increases, and at the same time, the space and comfort of the passenger compartment in the vehicle increases, CTB schemes, i.e., battery-to-body integration schemes, are increasingly being used. In the process of conception and implementation of the application, the applicant finds that at least the following problems are existed, namely, at present, the research on three-electric technology (motor, battery and electric control) of key parts of the electric automobile is gradually mature, the industrialization degree is gradually increased, and the integration level of the existing CTB scheme is lower, and the protection capability is weaker. The foregoing description is provided for general background information and does not necessarily constitute prior art. Disclosure of utility model The application provides a CTB battery pack and an electric automobile, which have good trampling prevention effect and high integration level. The present application provides a CTB battery pack comprising: the battery module comprises at least two electric cores; The composite support assembly is located on the battery module and comprises a first support piece and a second support piece, the first support piece is arranged on the second support piece, the second support piece is provided with a separation part, and the separation part extends towards the direction of the battery module and is located between two adjacent electric cores. The CTB battery pack has the beneficial effects that the top of the CTB battery pack can bear larger stress through the arrangement of the composite supporting component so as to protect the battery module, and further the service lives of the battery module and the CTB battery pack are prolonged. In some alternative embodiments, the CTB battery pack further comprises at least two glue line members; the second support piece is also provided with at least two glue storage grooves, the at least two glue storage grooves are respectively positioned at two opposite sides of the isolation part along the arrangement direction of the battery module, and the glue layer piece is positioned in the glue storage grooves, so that the battery cell is attached to the second support piece through the glue layer piece. It should be noted that the adhesive layer piece is located in the adhesive storage groove, so that the battery cell can be firmly attached to the second support piece through the adhesive layer piece. The design provides additional fixing force, prevents the battery cell from displacement in the process of transportation or use, and improves the overall stability of the battery pack. In some alternative embodiments, the second support further has a flange, and the flange, the spacer, and the bottom of the second support enclose the glue reservoir. It should be noted that, the arrangement of the flange effectively limits the movement of the adhesive layer piece in the adhesive storage groove, so as to ensure that the adhesive layer piece can be stably kept at a preset position. This fixity improves the adhesion between the battery cell and the second support, further enhancing the structural stability of the battery pack. In some alternative embodiments, the spacer is a spacer plate; The length of the rib is smaller than the length of the separator along the thickness direction of the CTB battery pack. It should be noted that the spacer provides sufficient physical isolation between the cells to prevent direct contact between adjacent cells. This design helps to prevent thermal runaway propagation in the event of a cell failure, improving the safety of the battery pack. In some alternative embodiments, the second support has a recess, and the first support has a projection that extends in a direction facing the second support and snaps into the recess such that the first support is disposed in the second support. It should be noted that the design of the projection to snap into the recess provides a reliable mechanical connection enabling the first support to be firmly mounted on the second support. The connecting mode improves the stability between the components and prevents loosening or displacement in the use process. In some alternative embodiments, the first support member includes a first support plate and a second support plate coupled to each other, the projection being provided on the second support plate. It should be noted that by dividing the first support member into two parts, namely, the first support plate and the second support plate, a modular design is achieved. The design of linking up of first backup pad and second backup pad can effectively disperse and bear the mechanical stress from the battery package, has improved holistic dura