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CN-224217649-U - Explosion venting device for lithium battery bin

CN224217649UCN 224217649 UCN224217649 UCN 224217649UCN-224217649-U

Abstract

The utility model relates to the technical field of explosion venting devices of lithium battery bins, and discloses an explosion venting device of a lithium battery bin, which comprises an explosion venting box, wherein a rotating door is rotatably connected to the left side of the inner wall of the explosion venting box, a connecting shaft II is connected to the inner wall of the rotating door close to the front side in a sliding manner, a spring I is fixedly connected to the left side end of the outer wall of the connecting shaft II, the other end of the spring I is fixedly connected to the front side of the inner wall of the rotating door, an extrusion plate is fixedly connected to the upper end and the lower end of the right side of the outer wall of the connecting shaft II, a spring III is fixedly connected between the adjacent two extrusion plates, a limiting plate is fixedly connected to the inner wall of the rotating door close to the front side, and the outer wall of the limiting plate is in contact with the inner wall of the extrusion plate. In the utility model, the rotary door is rotationally connected to the left side of the outer wall of the explosion venting box, and the connecting shaft II is simultaneously slid on the inner wall of the rotary door close to the front side, so that the function of rapidly opening the rotary door is realized, and the stability of the rotary door is ensured while the operation is simple and convenient.

Inventors

  • Zhao Baling

Assignees

  • 南京斯夫特安全工程有限公司

Dates

Publication Date
20260508
Application Date
20250522

Claims (8)

  1. 1. The utility model provides a lithium battery bin lets out and explodes device, includes lets out and explodes case (1), its characterized in that, let out and explode the inner wall left side rotation of case (1) and be connected with revolving door (3), the inner wall that revolving door (3) is close to front side sliding connection has connecting axle two (4), the outer wall left side end fixedly connected with spring one (5) of connecting axle two (4), the other end of spring one (5) is fixed in the inner wall front side of revolving door (3), the equal fixedly connected with stripper plate (8) of outer wall right side upper and lower extreme of connecting axle two (4), two fixedly connected with spring three (9) between the adjacent of stripper plate (8), the inner wall that revolving door (3) is close to front side fixedly connected with limiting plate (7), the outer wall of limiting plate (7) contacts with the inner wall of stripper plate (8), the inner wall that revolving door (3) is close to front side upper and lower ends all fixedly connected with fixed sleeve (10), the inner wall sliding connection of fixed sleeve (10) has block axle (11), block axle two (11) are connected with spring two (6) are in the inner wall two fixedly connected with spring two (6) respectively, the inner wall of fixedly connected with spring two (6) is at the bottom of dismantling the case (1), the dismounting mechanism (2) is used for fixing the device.
  2. 2. The lithium battery bin explosion venting device according to claim 1, wherein the dismounting mechanism (2) comprises a fixed block (201), the outer walls of the fixed blocks (201) are fixedly connected to four corners of the bottom of the outer wall of the explosion venting box (1), a first connecting shaft (203) is slidably connected to the top of the inner wall of the fixed block (201), a regulator (207) is rotatably connected to the top of the first connecting shaft (203), a sliding shaft (204) is fixedly connected to the bottom of the first connecting shaft (203), clamping plates (205) are fixedly connected to the front side and the rear side of the outer wall of the sliding shaft (204), rotating shafts (202) are rotatably connected to the inner walls of the clamping plates (205), and two ends of the rotating shafts (202) are fixed to the inner wall of the fixed block (201), and the bottoms of the clamping plates (205) are in contact with a fixed shaft (206).
  3. 3. The lithium battery bin explosion venting device according to claim 1, wherein the upper end and the lower end of the left side of the outer wall of the rotary door (3) are fixedly connected with protection strips (13), and the four corners of the left side of the outer wall of the rotary door (3) are fixedly connected with protection pads (12).
  4. 4. The lithium battery bin explosion venting device according to claim 1, wherein a handle I (14) is fixedly connected to the left side of the outer wall of the rotary door (3) close to the front end, and a connecting pipe (17) is fixedly connected to the rear side of the outer wall of the explosion venting box (1).
  5. 5. The lithium battery bin explosion venting device according to claim 1 is characterized in that a handle II (18) is fixedly connected to the left side and the right side of the top of the outer wall of the explosion venting box (1), and anti-slip sleeves (19) are fixedly connected to the outer walls of the handle II (18).
  6. 6. The lithium battery bin explosion venting device according to claim 1 is characterized in that soft cushions (15) are fixedly connected to the left side and the right side of the outer wall of the explosion venting box (1) close to the top, and mounting holes (23) are formed in the four corners of the bottom of the outer wall of the explosion venting box (1) close to the edges.
  7. 7. The explosion venting device for the lithium battery bin according to claim 1 is characterized in that protection strips (16) are fixedly connected to the front side and the rear side of the bottom of the outer wall of the explosion venting box (1), and protection plates (21) are fixedly connected to the left side and the right side of the bottom of the outer wall of the explosion venting box (1).
  8. 8. The lithium battery bin explosion venting device according to claim 1, wherein square pads (22) are fixedly connected to the left and right ends of the bottom of the front side of the outer wall of the explosion venting box (1), and protection plates (20) are fixedly connected to the left and right ends, close to the top, of the outer wall of the explosion venting box (1).

Description

Explosion venting device for lithium battery bin Technical Field The utility model relates to the technical field of explosion venting devices of lithium battery bins, in particular to an explosion venting device of a lithium battery bin. Background With the rapid development of new energy automobiles, energy storage power stations and portable electronic equipment industries, lithium batteries are becoming main energy storage elements in the market by virtue of the advantages of high energy density and long cycle life, however, under the conditions of overcharge, overdischarge, high temperature and collision of the lithium batteries, thermal runaway is extremely easy to be caused, so that a large amount of high-temperature and high-pressure gas and combustible substances are rapidly generated in the batteries, when the pressure and the temperature in a lithium battery bin reach critical values, if the pressure and the temperature cannot be released timely, severe explosion and combustion are caused, serious personnel casualties and property loss are caused, and according to statistics, in the field of new energy automobiles, the direct economic loss caused by related accidents is up to billions per year, the safety development of the lithium battery industry is seriously restricted, meanwhile, the existing explosion venting device lacks effective control over the explosion venting direction and strength, the high-temperature gas and flame can be sprayed onto peripheral equipment personnel in the explosion venting process, secondary injury is caused, and the lithium battery bin is not effectively protected after the explosion is fully blown into the lithium battery bin, and the lithium battery bin can be burned down, and the external risk of explosion is aggravated. The conventional lithium battery bin explosion venting device mainly comprises a pressure sensor and a control unit, mainly has the problems of slow response, low explosion venting efficiency and poor reliability, is triggered by a single pressure sensor, is only triggered by pressure change, judges whether to start explosion venting or not, when a small amount of gas is generated in the initial stage of thermal runaway of the lithium battery, the explosion venting cannot be triggered in time due to unobvious pressure change, so that the pressure in the bin is continuously accumulated, the optimal explosion venting time is delayed, meanwhile, the conventional explosion venting device is easy to fail in the structure and the sensor under the extremely high-temperature and vibration complex environment, the device is not effective at the key moment, the structural design of the conventional lithium battery bin explosion venting device also increases the difficulty of cleaning the inner wall, a plurality of explosion venting devices adopt integrated and closed structures, the inner wall structure is complex, a large number of dead corners and gaps exist, electrolyte, active substances and combustion residues generated in the lithium battery are extremely easy to remain at the difficult to touch positions after explosion venting, the common pipeline type explosion venting channels are easy to accumulate at the corners and the corners of the common pipeline type explosion venting channels, the common pipeline type explosion venting device is easy to cause faults, the device to be difficult to work deeply and difficult to clean the common tool is difficult to clean. Disclosure of utility model In order to make up for the defects, the utility model provides a lithium battery compartment explosion venting device, and aims to solve the problem that the traditional lithium battery compartment explosion venting device in the prior art is inconvenient to clean the inner wall. In order to achieve the purpose, the lithium battery bin explosion venting device comprises an explosion venting box, wherein the left side of the inner wall of the explosion venting box is rotationally connected with a rotating door, the inner wall of the rotating door is close to the front side and is connected with a connecting shaft II in a sliding manner, the left side end of the outer wall of the connecting shaft II is fixedly connected with a spring I, the other end of the spring I is fixedly connected with the front side of the inner wall of the rotating door, the upper end and the lower end of the right side of the outer wall of the connecting shaft II are fixedly connected with a squeezing plate, a spring III is fixedly connected between the adjacent two squeezing plates, the inner wall of the rotating door is close to the front side and is fixedly connected with a limiting plate, the outer wall of the limiting plate is in contact with the inner wall of the squeezing plate, the inner wall of the rotating door is close to the upper end and the lower end of the front side and is fixedly connected with a fixing sleeve, the inner wall of the fixing sleeve is in a sliding manner,