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CN-121983741-A - Guiding and limiting device for battery pack, battery pack assembly and electric automobile

CN121983741ACN 121983741 ACN121983741 ACN 121983741ACN-121983741-A

Abstract

The invention discloses a guiding and limiting device for a battery pack, the battery pack, a battery pack assembly and an electric automobile. The guiding and limiting device for the battery pack comprises a shell, an elastic mechanism and a limiting piece, wherein the shell is provided with a containing cavity and a limiting hole, the elastic mechanism and the limiting piece are arranged in the containing cavity, a protruding portion penetrating through and protruding out of the limiting hole is arranged on the surface, away from the elastic mechanism, of the limiting piece, the elastic mechanism is pressed in the containing cavity by the limiting piece and the shell, and the limiting piece is in floating connection with the shell through the elastic mechanism. According to the invention, the elastic mechanism is arranged in the shell, so that floating connection between the shell and the elastic piece is realized, stable installation of the battery pack and the battery fixing seat is ensured, blocking is avoided, and the requirement for aligning the battery pack in the installation process is reduced, thereby being beneficial to improving the installation efficiency.

Inventors

  • ZHANG JIANPING
  • HUANG CHUNHUA

Assignees

  • 奥动新能源股份有限公司

Dates

Publication Date
20260505
Application Date
20201202

Claims (10)

  1. 1. The utility model provides a direction stop device for battery package which characterized in that includes: the shell is provided with an accommodating cavity and a limiting hole; The elastic mechanism and the limiting piece are arranged in the accommodating cavity, the surface, away from the elastic mechanism, of the limiting piece is provided with a protruding portion penetrating through and protruding out of the limiting hole, the elastic mechanism is pressed by the limiting piece and the shell to be arranged in the accommodating cavity, and the limiting piece is in floating connection with the shell through the elastic mechanism.
  2. 2. The guide and limit device for a battery pack according to claim 1, wherein, The elastic mechanism comprises an elastic piece, wherein two ends of the elastic piece are respectively abutted against the limiting piece and the shell, the elastic mechanism is provided with one elastic piece, or the elastic mechanism is provided with a plurality of elastic pieces which are distributed at intervals, or the elastic mechanism comprises an elastic rubber block, two ends of the elastic rubber block are respectively abutted against the limiting piece and the shell, or the elastic mechanism comprises an elastic piece, and the elastic piece is any one or more of a spiral spring, a disc spring and a pagoda spring; And/or the shell is internally fixed with a limit bulge for radially limiting the elastic mechanism, the elastic mechanism is sleeved or inserted in the limit bulge, and/or the limit piece is provided with a limit ring, and the elastic mechanism is sleeved or inserted in the limit ring, and/or the limit piece is provided with a limit groove, and the elastic mechanism is clamped in the limit groove.
  3. 3. The guide and limit device for the battery pack according to claim 1, wherein one surface of the limit piece facing the elastic mechanism is provided with a limit matching part, and the limit matching part is one or more of a limit protrusion, a limit ring or a limit groove; Preferably, one surface of the limiting piece, which is provided with the limiting matching part, is provided with a plurality of concave parts, and bar-shaped ribs are arranged among the plurality of concave parts; Further preferably, the limit matching part is an annular rib, the elastic mechanism is inserted into or sleeved on the annular rib, and a plurality of blind holes are formed in the annular rib; Still further preferably, the blind hole has a radius that decreases gradually from the center of the annular bead outward, and/or the bar-shaped bead connects the annular bead and the side wall of the recess.
  4. 4. The guide and limit device for the battery pack according to claim 1, wherein the limit hole is matched with the shape of the protruding part, and the periphery of the protruding part is abutted against the inner wall surface of the limit hole or a gap of 0.5-5mm is reserved; and/or the limiting hole is arranged on the mounting surface of the shell, and the shell is further provided with a shell guide surface which gradually extends from one end of the shell towards the mounting surface and is inclined relative to the mounting surface; And/or the protruding end of the protruding part of the limiting part is provided with a limiting surface, and the protruding part is also provided with a limiting guide surface which inclines from the top of the protruding part to the limiting surface.
  5. 5. The guide and stopper device for a battery pack according to claim 1, wherein the housing comprises: an inner housing having an inner cavity with an opening at one end; The outer shell is provided with an outer shell guide surface and the limiting hole, is covered in the inner cavity and is detachably connected with the inner shell.
  6. 6. The guide and limit device for a battery pack according to claim 5, wherein, The side wall of the outer shell is provided with a clamping hole, the outer side wall of the inner shell is provided with a clamping block, the clamping block is sequentially connected with a guide surface, a transition surface and a clamping surface, the first end of the guide surface is connected with the side wall of the inner shell, the transition surface is parallel to the side wall of the inner shell, and the clamping surface is perpendicular to and connected with the side wall of the inner shell; and/or the periphery of the shell guide surface is respectively connected with three side surfaces of the shell and the end surface of the shell; and/or the inclination angle of the shell guide surface relative to the limit surface at the end part of the protruding part is smaller than 45 degrees; And/or the outer shell and the inner shell are provided with drain holes communicated with the accommodating cavity and the outside, and the drain holes are positioned at one end opposite to the guide surface of the outer shell; And/or the middle part of the inner shell is provided with a limiting protrusion which is sunken towards the inner cavity and is used for radially limiting the elastic mechanism; and/or, the inner shell is provided with a plurality of threaded columns protruding towards the inner cavity, the threaded columns are provided with threaded holes, and the threaded holes are through holes; and/or the inner shell is provided with a plurality of inner shell mounting surfaces, and an inner shell groove recessed towards the inner cavity is formed in the inner shell at a region avoiding the inner shell mounting surfaces; and/or one end of the inner shell corresponding to the outer shell guide surface is provided with an outer shell groove recessed towards the outer shell; and/or the inner shell is provided with an inclined transition surface, one end of the inner shell corresponding to the outer shell guide surface is sunken towards the inner cavity, and the inclined transition surface is connected with an inner shell installation surface; and/or a groove is cut on the side part of the inner shell and used for giving way to the guide surface of the outer shell.
  7. 7. A battery pack comprising a pack body and the battery pack guiding and limiting device according to any one of claims 1 to 6, the pack body having a side mounting surface on which the battery pack guiding and limiting device is mounted.
  8. 8. The battery pack according to claim 7, wherein the height of the guide stopper for the battery pack above the upper mounting surface of the battery pack main body is larger than the projected length of the housing guide surface on the housing.
  9. 9. The battery pack assembly is characterized by comprising a battery fixing seat and the guiding and limiting device for the battery pack, wherein one end, opposite to the limiting hole, of the shell is detachably connected with the battery pack, and when the battery pack is mounted on the battery fixing seat, the battery fixing seat is guided to the limiting piece through a shell guiding surface on the shell and then is mutually abutted with the limiting piece.
  10. 10. An electric vehicle comprising the battery pack assembly of claim 9.

Description

Guiding and limiting device for battery pack, battery pack assembly and electric automobile The application discloses a Chinese patent division of application number 2020114029763, namely a guide limiting device for a battery pack, a battery pack assembly and an electric automobile, wherein the application number is 2020, 12 and 2. Technical Field The invention relates to a guiding and limiting device for a battery pack, the battery pack, a battery pack assembly and an electric automobile. Background The electric automobile is provided with a battery pack, and a battery main body in the battery pack is used as a power source of the electric automobile. The battery package passes through the battery fixing base and installs on the frame of car, and both remain fixed during daily use, need take off the battery package of insufficient power from the battery fixing base when changing the battery, then install the battery package of full electricity on the battery fixing base, and the stability of battery package and counterpoint with the frame are especially important in the installation, otherwise harm battery package main part easily, and the reliability between battery package and the battery fixing base is also important after the installation. In the prior art, the stability of the battery pack during installation and the reliability between the battery pack and the battery fixing seat after installation are required to be improved. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides a guiding and limiting device for a battery pack, the battery pack, a battery pack assembly and an electric automobile. The invention solves the technical problems by the following technical proposal: a guiding and limiting device for a battery pack, comprising: the shell is provided with an accommodating cavity and a limiting hole; The elastic mechanism and the limiting piece are arranged in the accommodating cavity, the surface, away from the elastic mechanism, of the limiting piece is provided with a protruding portion penetrating through and protruding out of the limiting hole, the elastic mechanism is pressed by the limiting piece and the shell to be arranged in the accommodating cavity, and the limiting piece is in floating connection with the shell through the elastic mechanism. Preferably, the elastic mechanism comprises an elastic sheet, wherein two ends of the elastic sheet are respectively abutted against the limiting piece and the shell, and the elastic mechanism is provided with one elastic sheet or a plurality of elastic sheets which are distributed at intervals; Or alternatively The elastic mechanism comprises an elastic rubber block, and two ends of the elastic rubber block are respectively abutted against the limiting piece and the shell; Or alternatively The elastic mechanism comprises an elastic piece, and the elastic piece is any one or more of a spiral spring, a disc spring and a pagoda spring. Preferably, a limiting protrusion for radially limiting the elastic mechanism is fixed in the shell, and the elastic mechanism is sleeved or inserted in the limiting protrusion; and/or the limiting piece is provided with a limiting ring, and the elastic mechanism is sleeved or inserted into the limiting ring; and/or the limiting piece is provided with a limiting groove, and the elastic mechanism is clamped into the limiting groove. Preferably, one surface of the limiting piece facing the elastic mechanism is provided with a limiting matching part, and the limiting matching part is one or more of a limiting protrusion, a limiting ring or a limiting groove. Preferably, a plurality of concave parts are arranged on one surface of the limiting piece, which is provided with the limiting matching part, and bar-shaped ribs are arranged among the concave parts. Preferably, the limit matching part is an annular rib, the elastic mechanism is inserted into or sleeved on the annular rib, and a plurality of blind holes are formed in the annular rib. Preferably, the blind hole has a radius that decreases gradually outwards from the centre of the annular rib. Preferably, the bar-shaped rib connects the annular rib and the side wall of the recess. Preferably, the shape of the limiting hole is matched with that of the protruding portion, and the periphery of the protruding portion is abutted against the inner wall surface of the limiting hole or a gap of 0.5-5mm is reserved. Preferably, the limiting hole is formed in a mounting surface of the housing, and the housing further has a housing guide surface extending gradually from one end of the housing toward the mounting surface and inclined with respect to the mounting surface. Preferably, the protruding end of the protruding part of the limiting part is provided with a limiting surface, and the protruding part is further provided with a limiting guide surface which inclines from the top of the protruding part to the limiting surface. Prefe