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CN-224231207-U - Battery bipolar plate sealing test machine

CN224231207UCN 224231207 UCN224231207 UCN 224231207UCN-224231207-U

Abstract

The utility model belongs to the technical field of battery bipolar plate sealing tests, and discloses a battery bipolar plate sealing test machine which comprises a main machine device for testing battery bipolar plate sealing under pressure, and further comprises an isolation device which is arranged in the middle of the main machine device and used for moving a separation station up and down, wherein a pressing device for moving transposition and applying force to press down is arranged at the inner top of the main machine device, the main machine device comprises a main machine body, a test box is arranged on the main machine body, a limiting chute is arranged in the middle of the test box, two die assemblies for fixing the battery bipolar plate sealing test are symmetrically arranged in the test box, the isolation device comprises a lifting partition plate, two linear motors are symmetrically arranged at the bottom of the lifting partition plate, and linear guide rails are arranged in the linear motors. According to the battery bipolar plate sealing testing machine, double-station alternating testing is achieved through the two symmetrically arranged die assemblies and the movable pressing device, and testing safety is ensured while sealing detection efficiency of the battery bipolar plate is greatly improved.

Inventors

  • WANG YUNLONG
  • XU JIABIN
  • XU JINGPING

Assignees

  • 江苏深储新材料有限公司

Dates

Publication Date
20260512
Application Date
20250812

Claims (7)

  1. 1. The battery bipolar plate sealing testing machine comprises a host device for testing the battery bipolar plate sealing under pressure, and is characterized by further comprising an isolation device which is arranged in the middle of the host device and used for moving a separation station up and down, wherein a pressing device for moving transposition and applying force to press down is arranged at the inner top of the host device; The main machine device comprises a main machine body (101), wherein a test box (102) is arranged on the main machine body (101), a limiting chute (103) is arranged in the middle of the test box (102), two die assemblies for fixing a battery bipolar plate sealing test are symmetrically arranged in the test box (102), the die assemblies are connected with the main machine body (101) through a communicating pipe (108), and two case doors (104) are symmetrically arranged in front of the test box (102); The isolation device comprises a lifting partition plate (201), two linear motors (203) are symmetrically arranged at the bottom of the lifting partition plate (201), and linear guide rails (204) are arranged in the linear motors (203); The pushing device comprises a translation assembly used for reciprocating, two telescopic cylinders (306) are symmetrically arranged on the translation assembly, and a lower pressing plate (307) is arranged between telescopic ends of the telescopic cylinders (306).
  2. 2. The bipolar plate sealing tester for a battery according to claim 1, wherein the die assembly comprises a lower die plate (106) and an upper die plate (107), and a sealing gasket (109) is adhered to the inner surface of the upper die plate (107).
  3. 3. The battery bipolar plate sealing test machine according to claim 2, wherein a perspective window (105) is arranged between the two case doors (104), and the outer ends of the two case doors (104) are respectively hinged with the main machine body (101).
  4. 4. The battery bipolar plate sealing testing machine according to claim 1, wherein the top of the lifting partition plate (201) is provided with an avoidance groove (202), and the thickness of the lifting partition plate (201) is larger than that of the wallboard of the testing box (102).
  5. 5. The machine for testing the seal of a battery bipolar plate according to claim 4, wherein said linear guide (204) is vertically installed in said main body (101).
  6. 6. The battery bipolar plate sealing test machine according to claim 1, wherein the translation assembly comprises a fixing frame (301), a screw rod (302) is arranged in the middle of the fixing frame (301), a servo motor (303) is arranged at one end of the screw rod (302), a screw sleeve sliding block (304) is arranged in the middle of the screw rod (302), and a translation frame (305) is arranged below the screw sleeve sliding block (304).
  7. 7. A battery bipolar plate seal tester as claimed in claim 6, wherein said lower platen (307) is rectangular and has a size greater than the size of said die assembly.

Description

Battery bipolar plate sealing test machine Technical Field The utility model belongs to the technical field of battery bipolar plate sealing tests, and particularly relates to a battery bipolar plate sealing test machine. Background The sealing performance of the bipolar plate of the battery is used as a core component of a fuel battery and a lithium battery system, and directly influences the safety and the service life of the battery stack. The seal test detects the micro leakage condition of the joint surface of the bipolar plate and the sealing element by simulating the pressure change under the actual working condition, and the reliability of the design structure is verified. The environmental temperature is required to be strictly controlled at 20+/-2 ℃ and the humidity is lower than 60% RH in the test process so as to eliminate the influence of environmental variables on the test result. The bipolar plate sample needs to be subjected to three complete pressurizing-pressure maintaining-pressure releasing cycles, and each cycle is separated by 2 hours, so that the stress release of the material is ensured. The detection key points comprise stress concentration areas such as a runner interface, a bolt hole periphery, a sealing groove and the like, and infrared thermal imaging is adopted to assist in positioning microscopic leakage points. Modern seal tests have realized automatic data acquisition, pressure curve fluctuation is monitored in real time through a pressure sensor, and an abnormal fluctuation mode is automatically identified by combining an AI algorithm. The test result needs to form a three-dimensional leakage distribution map, and a quantization basis is provided for subsequent structural optimization. The patent in China, with the publication number of CN222013427U, discloses a bipolar plate sealing test device for a hydrogen fuel cell, and aims to solve the problems that in the existing test device, a lower template cannot move, and a worker installs an electrode plate on the lower template, which is time-consuming and labor-consuming. The lower template is connected to the test bed in a sliding manner through the guide rail, a sliding groove matched with the guide rail is formed in the opposite surface of the lower template and the guide rail, a limiting component for the lower template is further arranged on the test bed, a protection piece for the air pipe is further arranged on the lower template, a sliding rail is arranged on the test bed, a sliding groove matched with the sliding rail is formed in the lower template, the lower template is connected to the sliding rail in a sliding manner, when the electrode plates are fed, the lower template is moved to the edge of the test bed, the electrode plates are fed conveniently by workers, the installation accuracy is guaranteed, and meanwhile, the labor intensity of the workers is reduced. However, the above patent needs to stop and take and put after completing the sealing test of one bipolar plate of the battery, so that the sealing test of the bipolar plate of the other battery can be performed, and the efficiency of the sealing test of the bipolar plate of the battery is greatly reduced, so that a new device is designed. Disclosure of utility model The utility model aims to provide a battery bipolar plate sealing test machine which is used for solving the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: The battery bipolar plate sealing testing machine comprises a main machine device used for testing battery bipolar plate sealing under pressure, and further comprises an isolation device used for moving a separation station up and down, wherein the isolation device is arranged in the middle of the main machine device, a pressing device used for moving and changing positions and applying force to press down is arranged at the inner top of the main machine device, the main machine device comprises a main machine body, a testing box is arranged on the main machine body, a limiting chute is arranged in the middle of the testing box, two die assemblies used for fixing battery bipolar plate sealing tests are symmetrically arranged in the testing box, the die assemblies are connected with the main machine body through communicating pipes, two chassis doors are symmetrically arranged in front of the testing box, the isolation device comprises a lifting partition plate, two linear motors are symmetrically arranged at the bottom of the lifting partition plate, linear guide rails are arranged in the linear motors, the pressing device comprises a translation assembly used for reciprocating movement, two telescopic cylinders are symmetrically arranged on the translation assembly, and a pressing plate is arranged between telescopic ends of the telescopic cylinders. The die assembly comprises a lower die plate and an upper die plate, and a sealing gasket