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CN-224209370-U - Welding fixing device for battery module box

CN224209370UCN 224209370 UCN224209370 UCN 224209370UCN-224209370-U

Abstract

The utility model relates to the technical field of battery production and discloses a welding and fixing device for a battery module box body, wherein the box body comprises a lower box body and an upper box body, flange edges are arranged on the upper box body and the lower box body respectively and comprise a bracket, a second plate body is provided with a second fixing position for fixing the upper box body, a second through hole is formed in the second plate body, a first plate body is arranged on one side of the second plate body, an installation space for accommodating the upper box body and the lower box body is formed between the second plate body and the first plate body, the first plate body is provided with a first fixing position for connecting and fixing the lower box body, the first plate body is provided with a first through hole, a first fixing piece is arranged through the first through hole and is abutted to the flange edge of the lower box body, a second fixing piece is arranged through the second through hole and abutted to the flange edge of the upper box body in a third direction, the problem of offset caused by manual placement can be eliminated, the problems of flange edge dislocation and light leakage can be solved, uniformity of welding joints can be remarkably improved, and quality of a battery module product can be further improved.

Inventors

  • Zheng Jiongcheng
  • XU XUNYU
  • Xiong Bihai
  • LI LIANGPING
  • Wen Yeyong

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (10)

  1. 1. The utility model provides a welded fastening device of battery module box, battery module box includes box (10) and last box (20) down, go up box (20) with all be provided with flange limit on box (10) down, its characterized in that includes: The device comprises a bracket (1), wherein the bracket (1) is provided with a first direction (X), a second direction (Y) and a third direction (Z) which are perpendicular to each other in pairs; The second plate body (3), the second plate body (3) is fixed on one side of the third direction (Z) of the bracket (1), the second plate body (3) is provided with a second fixing position (31) to be connected with and fix the upper box body (20), and the second plate body (3) is provided with a second through hole (32) along the third direction (Z); The first plate body (2), the first plate body (2) set up in one side of the third direction (Z) of second plate body (3), first plate body (2) connect in support (1) and can follow on the third direction (Z), second plate body (3) with first plate body (2) interval sets up, in order to form the accommodation upper box body (20) with the installation space of lower box body (10), first plate body (2) have first fixed position (21) in order to connect and fix lower box body (10), first through-hole (22) have been seted up along third direction (Z) to first plate body (2); The first fixing piece (4) is arranged in the first through hole (22) in a penetrating mode, and the first fixing piece (4) is abutted to the flange edge of the lower box body (10) in the third direction (Z); The second fixing piece (5), the second fixing piece (5) is worn to locate second through hole (32), second fixing piece (5) in third direction (Z) butt in the flange limit of last box (20).
  2. 2. The welding and fixing device for the battery module box body according to claim 1, further comprising a third plate body (6), wherein the third plate body (6) is slidably connected to the bracket (1) in the third direction (Z), the third plate body is fixedly connected with the first plate body (2) in the third direction (Z), a first driving mechanism (41) is arranged on the third plate body (6), and the first driving mechanism (41) is connected with and drives the first fixing piece (4).
  3. 3. The welding fixture of a battery module case according to claim 2, wherein a plurality of the first through holes (22) are provided, a plurality of the first through holes (22) are provided around the first fixing portion (21), a plurality of the first fixing members (4) are also provided, and each of the first fixing members (4) is connected to the first driving mechanism (41).
  4. 4. The welding and fixing device for the battery module box body according to claim 2, wherein a guide rail (11) extending along the third direction (Z) is arranged on the support (1), a sliding block (12) is connected in a sliding manner to the guide rail (11), and the third plate body (6) is connected with the sliding block (12) in the second direction (Y).
  5. 5. The welding and fixing device for the battery module box body according to claim 2, wherein a fifth plate body (62) is arranged on one side of the third plate body (6) along the third direction, a second driving mechanism (61) is arranged on the fifth plate body (62), and the second driving mechanism (61) is connected with and drives the third plate body (6) to move in the third direction (Z).
  6. 6. The welding fixture of a battery module case according to claim 1, wherein a plurality of second through holes (32) are provided, the plurality of second through holes (32) are provided around the second fixing position (31), the second plate (3) is connected with a third driving mechanism (51) at one side of the second direction (Y), and the third driving mechanism (51) is connected with and drives the second fixing member (5) to move along the third direction (Z).
  7. 7. The welding fixture of a battery module case according to claim 6, further comprising a fourth plate (7), wherein the fourth plate (7) is connected to a third direction (Z) of the second plate (3), the fourth plate (7) extends along the second direction (Y) and is connected to an output shaft of the third driving mechanism (51), the third driving mechanism (51) drives the fourth plate (7) to move along the third direction (Z), and the second fixing member (5) is fixed to the fourth plate (7).
  8. 8. The welding and fixing device for the battery module box body according to claim 1, wherein a plurality of first positioning pieces (8) are further arranged on the first plate body (2), and the plurality of first positioning pieces (8) are arranged around the first fixing position (21) so as to fix the lower box body (10).
  9. 9. The welding fixture of battery module cases according to claim 8, wherein the first positioning member (8) comprises a fourth driving mechanism (81) and a positioning plate (82), the fourth driving mechanism (81) is fixed on the first plate (2), and an output shaft of the fourth driving mechanism (81) is connected with the positioning plate (82) and drives the positioning plate (82) to abut against the lower case (10) along the first direction (X) or the second direction (Y).
  10. 10. The welding and fixing device for the battery module box body according to claim 1, wherein the second fixing position (31) is provided with a third through hole (33) along the third direction (Z), a second positioning piece (9) is arranged in the third through hole (33) in a penetrating manner, and the second positioning piece (9) is used for fixing the upper box body (20) of the battery module.

Description

Welding fixing device for battery module box Technical Field The utility model relates to the technical field of battery production, in particular to a welding and fixing device for a battery module box body. Background Pure electric vehicles are the most representative industry for new energy vehicles, and the current development is on the day of steaming. The power battery is used as one of the parts of the core of the pure electric vehicle, and the welding quality of the module housing box body determines the strength of the whole module. The difficulty that two upper and lower box welding exists at present mainly is how to guarantee that two box welded seam departments align, do not leak light, how to guarantee to weld to inside module under the condition of the flange limit of welding through the module box. And to reach above-mentioned effect, then need before the welding through the flange limit alignment of tool with upper and lower box, this process generally adopts manual the manual place, can lead to the flange limit alignment of upper and lower box after placing inaccurate, causes welding quality gliding, influences the quality of battery module product. Disclosure of utility model The utility model aims to provide a welding and fixing device for a battery module box body, which can eliminate offset caused by manual placement, solve the problems of flange edge dislocation and light leakage, ensure uniformity of welding joints, remarkably improve welding strength and sealing performance and further improve quality of battery module products. In order to achieve the above object, the present utility model provides a welding and fixing device for a battery module case, the battery module case includes a lower case and an upper case, flange edges are disposed on the upper case and the lower case, and the welding and fixing device includes: The support is provided with a first direction, a second direction and a third direction which are perpendicular to each other; The second plate body is fixed on one side of the bracket in the third direction and is provided with a second fixing position for connecting and fixing the upper box body, and a second through hole is formed in the second plate body along the third direction; The first plate body is arranged on one side of the second plate body in the third direction, the first plate body is connected with the bracket and can move along the third direction, the second plate body and the first plate body are arranged at intervals to form an installation space for accommodating the upper box body and the lower box body, the first plate body is provided with a first fixing position for connecting and fixing the lower box body, and a first through hole is formed in the first plate body along the third direction; the first fixing piece is arranged in the first through hole in a penetrating mode, and is abutted to the flange edge of the lower box body in the third direction; The second fixing piece is arranged in the second through hole in a penetrating mode, and the second fixing piece abuts against the flange edge of the upper box body in the third direction. Compared with the prior art, the welding and fixing device for the battery module box body has the advantages that the first plate body and the second plate body are fixed on the support, the first fixing piece and the second fixing piece are respectively arranged on the first plate body and the second plate body, the first fixing piece is arranged in the first through hole of the first plate body in a penetrating mode, the second fixing piece is arranged in the second through hole of the second plate body in a penetrating mode, the first fixing piece is abutted to the flange edge of the lower box body, the second fixing piece is abutted to the flange edge of the upper box body, the upper box body is placed under the second plate body before welding, the flange edge of the upper box body is fixed through the second fixing piece, the lower box body is placed on the first plate body, the first fixing piece is abutted to the flange edge of the lower box body, the upper box body is aligned with the flange edge of the lower box body when the upper box body is fixed to the lower box body, the first fixing piece is abutted to the flange edge of the lower box body, and the first fixing piece and the second fixing piece is convenient to move towards the lower box body in a joint mode, and the welding operation is convenient to achieve after welding operation of the upper box body and the third fixing piece is abutted to the flange edge of the box body. According to the utility model, through layered design of the first plate body and the second plate body and the structure that the first plate body can move along the third direction, the flange edges of the lower box body and the upper box body are ensured to be accurately aligned in a three-dimensional space by combining mechanical limiting of the first fixed p