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CN-224232838-U - Battery pack connection structure and battery pack

CN224232838UCN 224232838 UCN224232838 UCN 224232838UCN-224232838-U

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack connecting structure and a battery pack, wherein the battery pack connecting structure comprises a fixed end plate, a bracket and a fixing piece; the fixing end plate is provided with a first mounting hole along a first direction, opposite ends of the fixing end plate along a second direction are fixed with a battery module of the battery pack, the second direction is perpendicular to the first direction, one end of the support is abutted to the fixing end plate, a second mounting hole corresponding to the first mounting hole is formed along the first direction, the fixing piece penetrates through the first mounting hole and the second mounting hole to connect the fixing end plate and the support, and one surface of the support, which is away from the fixing end plate, is suitable for being fixedly connected with a shell of the battery pack. According to the utility model, the battery module of the battery pack is fixedly connected through the fixed end plate, the fixed end plate is fixed with the bracket through the fixing piece, and the bracket is also fixed with the shell of the battery pack, so that the structural strength and stability of the whole battery pack are improved.

Inventors

  • YANG BIN
  • YUN JING

Assignees

  • 蜂巢能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (10)

  1. 1. A battery pack connection structure, comprising: The battery pack comprises a fixed end plate, a battery pack and a connecting piece, wherein a first mounting hole is formed in the fixed end plate along a first direction, opposite ends of the fixed end plate along a second direction are respectively fixed with a battery module of the battery pack, and the second direction is perpendicular to the first direction; One end of the bracket is in butt joint with the fixed end plate, and a second mounting hole corresponding to the first mounting hole is formed along the first direction; the fixing piece is arranged in the first mounting hole and the second mounting hole in a penetrating mode, so that the fixing end plate and the support are connected, and one face, away from the fixing end plate, of the support is suitable for being fixedly connected with a shell of the battery pack.
  2. 2. The battery pack connection structure according to claim 1, wherein the fixing end plate is provided with a protrusion along a first direction, the first mounting hole is formed in the protrusion, a surface of the protrusion, which is close to the bracket, is concavely formed into a mounting groove, and one end of the bracket is abutted to a groove bottom of the mounting groove.
  3. 3. The battery pack connection structure according to claim 2, wherein a gap is left between a wall of the mounting groove and the bracket in the second direction.
  4. 4. The battery pack connection structure according to claim 2, wherein the fixing member is provided with a limiting portion extending in the second direction, and one surface of the protrusion, which is away from the bracket, abuts against the limiting portion.
  5. 5. The battery pack connection structure according to any one of claims 1 to 4, wherein opposite ends of the fixed end plate in the second direction are provided with a first end face and a second end face, respectively, the first end face and the second end face also extend in the second direction and form a first abutting portion, respectively, and the bracket extends in the second direction and forms a second abutting portion, the first abutting portion abutting against the second abutting portion.
  6. 6. The battery pack connection structure according to any one of claims 1 to 4, wherein at least one cavity is provided on the fixed end plate and/or the bracket.
  7. 7. A battery pack, comprising: The shell is provided with a containing cavity, a cross beam is arranged in the containing cavity, and the cross beam extends along a second direction and divides the containing cavity into a first subchamber and a second subchamber; The first battery module is arranged in the first subchamber, and the first battery module is provided with a first subchamber and a second subchamber at intervals along a second direction; the second battery module is arranged in the second subchamber, and a third subchamber and a fourth subchamber are arranged on the second battery module at intervals along a second direction; The battery pack connection structure according to any one of claims 1 to 6, wherein the first sub-module and the second sub-module are connected by one of the fixed end plates of the battery pack connection structure, the third sub-module and the fourth sub-module are fixedly connected by the other fixed end plate of the battery pack connection structure, and the brackets of the two battery pack connection structures are respectively fixedly connected with the housing.
  8. 8. The battery pack according to claim 7, wherein a first cold plate and a second cold plate are further provided on the case, the first cold plate is provided between the first battery module and the cross beam, one of the brackets of the battery pack connection structure is fixedly connected with the first cold plate, the second cold plate is provided between the second battery module and the case, and the other bracket of the battery pack connection structure is fixedly connected with the second cold plate.
  9. 9. The battery pack according to claim 8, wherein two of the battery pack connection structures, the first cold plate, and the cross member are fixedly connected by one of the fixing members passing through one of the battery pack connection structures, the first cold plate, the cross member, and the other of the battery pack connection structures in order.
  10. 10. The battery pack of claim 9, wherein the fixed end plate of the battery pack connection structure connecting the third and fourth sub-modules extends toward the first cold plate to form an extension portion that abuts the first cold plate.

Description

Battery pack connection structure and battery pack Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack connection structure and a battery pack. Background The appearance of new energy automobiles greatly improves the environmental pollution. But the new energy automobile has the problem of insufficient mileage. Since the internal space of the battery pack is limited, it is important to increase the capacity of the battery pack by using the limited internal space. For this reason, a more compact cell arrangement scheme is required to improve the space utilization of the battery pack, thereby improving the power of the battery pack. The existing battery pack mostly adopts a single-layer module, and the battery pack with the structure has larger gaps in the up-down direction, so that the space utilization rate is low, and the capacity of the battery pack is difficult to effectively improve. For this reason, in the related art, the space utilization of the battery pack is improved by adopting the structure of the double-layer module, however, the center of gravity of the battery pack of the double-layer module moves upwards, resulting in a decrease in structural strength and poor stability. Disclosure of utility model In view of the above, the utility model provides a battery pack connection structure and a battery pack, so as to solve the problems of poor structural strength and poor stability of the existing battery pack adopting a double-layer module structure. In a first aspect, the present utility model provides a battery pack connection structure, comprising: The battery pack comprises a fixed end plate, a battery pack and a connecting piece, wherein a first mounting hole is formed in the fixed end plate along a first direction, opposite ends of the fixed end plate along a second direction are respectively fixed with a battery module of the battery pack, and the second direction is perpendicular to the first direction; One end of the bracket is in butt joint with the fixed end plate, and a second mounting hole corresponding to the first mounting hole is formed along the first direction; the fixing piece is arranged in the first mounting hole and the second mounting hole in a penetrating mode, so that the fixing end plate and the support are connected, and one face, away from the fixing end plate, of the support is suitable for being fixedly connected with a shell of the battery pack. The battery pack connecting structure has the beneficial effects that the battery module of the battery pack is fixedly connected through the fixed end plate, the fixed end plate is fixed with the bracket through the fixing piece, the bracket is also fixed with the shell of the battery pack, a stable structure with a plurality of structural parts mutually fixed is formed, and the structural strength and stability of the whole battery pack are improved. In an alternative embodiment, the fixing end plate is provided with a protrusion along a first direction, the first mounting hole is formed in the protrusion, a mounting groove is formed in one surface, close to the bracket, of the protrusion, and one end of the bracket is abutted to the bottom of the mounting groove. The fixing end plate has the beneficial effects that the fixing end plate is provided with the bulge, the bulge is provided with the mounting groove to fix the support, on one hand, the mounting space of the support can be saved, on the other hand, one end of the support is abutted with the bottom of the mounting groove to form surface contact, the support can be used for supporting the fixing end plate, the connection stability of the fixing end plate and the mounting groove is improved, and dislocation and offset of the fixing end plate are avoided. In an alternative embodiment, a gap is left between the groove wall of the mounting groove and the bracket in the second direction. The battery module fixing device has the beneficial effects that the groove wall of the mounting groove is provided with a mounting gap between the second direction and the bracket, so that the fixed end plate and the battery module are prevented from interfering with each other after being fixed. In an alternative embodiment, the fixing member is provided with a limiting portion extending along the second direction, and one surface of the protrusion, which faces away from the bracket, abuts against the limiting portion. The fixing piece has the beneficial effects that the mounting position of the fixing piece can be limited by abutting the limiting part with the bulge, so that the overall structural stability and the connection strength are further improved. In an alternative embodiment, the opposite ends of the fixed end plate along the second direction are respectively provided with a first end face and a second end face, the first end face and the second end face also respectively extend along the second direction and form a