Battery puncture test device with explosion-proof mechanism

Abstract

The invention discloses a battery puncture test device with an explosion-proof mechanism, and belongs to the technical field of lithium battery puncture experiments, the battery puncture test device comprises a support base, a protective cover, a top beam, a puncture assembly and a bearing assembly, the top beam is fixedly connected to the top of the support base; the puncturing assembly is arranged on the top beam and used for puncturing a lithium battery, the puncturing assembly comprises a motor, a threaded rod, a push plate and a puncturing needle, the threaded rod is fixedly installed at the output end of the motor, one end of the threaded rod is rotationally connected to the push plate, and the threaded rod is configured to drive the push plate to do lifting motion; and the puncture needle is fixedly mounted at the bottom of the push plate and is used for puncturing the lithium battery. By arranging the protective cover, the lithium battery can be effectively isolated from the outside when the cover door is closed, so that impact force, flame and splash generated by explosion can be effectively prevented from diffusing to the surrounding when the lithium battery has an unforeseen circumstance, and the safety of testers and surrounding equipment is greatly protected.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery puncture test, in particular to a battery puncture test device with an explosion-proof mechanism. Background Art

[0002] When lithium batteries are damaged by external forces (such as puncture), they may experience dangerous situations such as thermal runaway, fire, or even explosion. Therefore, it is very necessary to conduct puncture tests on lithium batteries to evaluate their safety. In the field of lithium battery puncture test technology, traditional battery puncture test equipment often lacks effective safety protection measures. Due to the characteristics of lithium batteries themselves, when punctured, violent fire and explosion reactions are prone to occur, posing a serious threat to experimenters and surrounding equipment.

[0003] However, traditional battery puncture test devices often lack simple and effective explosion-proof measures. Once the lithium battery reacts violently during the test, it is easy to cause harm to the test personnel, and may also damage the test equipment and the surrounding environment. Therefore, in order to improve the safety of lithium battery puncture experiments and protect the staff and equipment, a battery puncture test device with an explosion-proof mechanism is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a battery puncture test device with an explosion-proof mechanism to solve the problem mentioned in the above background technology that traditional battery puncture test devices often lack simple and effective explosion-proof measures. Once a lithium battery reacts violently during the test, it is easy to cause harm to the test personnel and may also damage the test equipment and the surrounding environment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A battery puncture test device with an explosion-proof mechanism, comprising a support base, a protective cover, a top beam, a puncture assembly and a bearing assembly, wherein the top beam is fixedly connected to the top of the support base;

[0006] The puncture assembly is arranged on the top beam for puncturing the lithium battery, and the puncture assembly includes a motor, a threaded rod, a push plate and a puncture needle. The threaded rod is fixedly mounted on the output end of the motor, one end of the threaded rod is rotatably connected to the push plate, and is configured to drive the push plate to move up and down. The puncture needle is fixedly mounted on the bottom of the push plate for puncturing the lithium battery;

[0007] The protective cover is hingedly connected to both sides of the support base, and the protective cover includes two symmetrically arranged cover doors, and the lithium battery is wrapped and isolated when the cover doors are closed;

[0008] The bearing assembly is fixed on the supporting base and is located below the puncture assembly to bear the lithium battery;

[0009] As a further preferred embodiment of the present technical solution: a puncture head is provided at the bottom of the puncture needle, the puncture head is a conical structure, and the tip of the puncture head is vertically downward;

[0010] As a further preferred embodiment of the present technical solution: the puncture assembly further comprises a water pump fixedly mounted on the top beam, the output end of the water pump is connected to a water spray head, and the water outlet of the water spray head faces the puncture head;

[0011] As a further preferred embodiment of the technical solution: a guide rod is slidably connected to the top beam, and two ends of the guide rod are respectively fixedly connected to the lifting plate and the push plate;

[0012] As a further preferred embodiment of the technical solution: the middle portion of the threaded rod is threadedly connected to the top beam;

[0013] As a further preferred embodiment of the technical solution: the bearing assembly comprises a bearing frame fixed on the supporting base, the bearing frame is fixedly connected with a working disk, the working disk is provided with a clearance hole, and the clearance hole is arranged below the puncture needle;

[0014] As a further preferred embodiment of the technical solution: an observation window is provided on the cover door, and the observation window is at the same horizontal position as the bearing assembly;

[0015] As a further preferred embodiment of the technical solution: an exhaust port is provided on the cover door, and the exhaust port is arranged at the lower half of the cover door;

[0016] As a further preferred embodiment of the present technical solution: a handle is fixedly connected to the cover door.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, by providing a protective cover, when the cover door is closed, the lithium battery can be effectively isolated from the outside world, so that when an accident occurs to the lithium battery, the impact force, flame and splash generated by the explosion can be effectively blocked from spreading to the surroundings, thereby greatly protecting the safety of the test personnel and surrounding equipment;

[0019] 2. In the present invention, a motor, a threaded rod, a guide rod and other structures are arranged in the puncture assembly. The motor drives the threaded rod to rotate, and the push plate drives the puncture needle to rise and fall accurately by means of the threaded transmission. The guide rod ensures that the push plate moves stably without deviation, thereby ensuring the accuracy and reliability of the puncture process, and can better simulate the effects of different puncture conditions on lithium batteries, providing accurate data for lithium battery safety assessment;

[0020] 3. By setting a water pump and a water spray head near the puncture needle, not only can water be sprayed in time to cool down after the puncture is completed, avoiding secondary combustion of lithium batteries due to incomplete combustion due to excessive temperature, further ensuring the safety of workers, but also during the puncture process, water can also absorb harmful gases or dust and other substances that may be generated, reducing pollution to the test environment, while reducing the risk of explosion caused by intensified internal reactions of lithium batteries due to high temperature, thereby improving the safety and environmental protection of the entire test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a battery puncture test device with an explosion-proof mechanism according to the present invention;

[0022] Figure 2 It is a schematic diagram of an open state of a battery puncture test device with an explosion-proof mechanism according to the present invention;

[0023] Figure 3 It is a partial structural schematic diagram of a battery puncture test device with an explosion-proof mechanism according to the present invention;

[0024] Figure 4 It is a structural schematic diagram of a puncture assembly of a battery puncture test device with an explosion-proof mechanism according to the present invention;

[0025] Figure 5 It is a structural schematic diagram of the load-bearing component;

[0026] Figure 6 A schematic diagram of the structure of the protective cover.

[0027] In the figure: 1. Support base; 2. Protective cover; 3. Top beam; 4. Piercing assembly; 5. Carrying assembly; 21. Cover door; 22. Exhaust port; 23. Observation window; 24. Handle; 41. Motor; 42. Lifting plate; 43. Guide rod; 44. Threaded rod; 45. Push plate; 46. Piercing needle; 47. Piercing head; 48. Water pump; 49. Spray head; 51. Carrying frame; 52. Working disk; 53. Clearance hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example

[0030] See also Figure 1-Figure 6As shown, the present invention provides a technical solution: a battery puncture test device with an explosion-proof mechanism, comprising a support base 1, a protective cover 2, a top beam 3, a puncture assembly 4 and a bearing assembly 5, wherein the top beam 3 is fixedly connected to the top of the support base 1;

[0031] The puncture assembly 4 is arranged on the top beam 3 for puncturing the lithium battery. The puncture assembly 4 includes a motor 41, a threaded rod 44, a push plate 45 and a puncture needle 46. The threaded rod 44 is fixedly mounted on the output end of the motor 41. One end of the threaded rod 44 is rotatably connected to the push plate 45 and is configured to drive the push plate 45 to move up and down. The puncture needle 46 is fixedly mounted on the bottom of the push plate 45 for puncturing the lithium battery.

[0032] The protective cover 2 is hingedly connected to both sides of the support base 1, and the protective cover 2 includes two symmetrically arranged cover doors 21, and the cover doors 21 are closed to wrap and isolate the lithium battery;

[0033] The carrying assembly 5 is fixed on the supporting base 1 and is located below the puncture assembly 4 to carry the lithium battery.

[0034] In this embodiment, specifically: a puncture head 47 is provided at the bottom of the puncture needle 46, and the puncture head 47 is a conical structure, and the tip of the puncture head 47 is vertically downward. The conical puncture head 47 at the bottom of the puncture needle 6 is designed, and its sharp tip can more easily puncture the outer shell of the lithium battery, reduce the resistance during the puncture process, and is also conducive to controlling the relatively small wound size formed during puncture.

[0035] In this embodiment, specifically: the puncture assembly 4 also includes a water pump 48 fixedly mounted on the top beam 3 , the output end of the water pump 48 is connected to a water spray head 49 , and the water outlet of the water spray head 49 faces the puncture head 47 .

[0036] In this embodiment, specifically: a guide rod 43 is slidably connected to the top beam 3 , and two ends of the guide rod 43 are fixedly connected to the lifting plate 42 and the pushing plate 45 respectively.

[0037] In this embodiment, specifically: the middle portion of the threaded rod 44 is threadedly connected to the top beam 3 .

[0038] In this embodiment, specifically: the bearing assembly 5 includes a bearing frame 51 fixed on the supporting base 1, and a working disk 52 is fixedly connected to the bearing frame 51. The working disk 52 is provided with a clearance hole 53, and the clearance hole 53 is arranged below the puncture needle 46.

[0039] In this embodiment, specifically: an observation window 23 is provided on the cover door 21, and the observation window 23 is at the same horizontal position as the bearing assembly 5. The cover door 21 can prevent the impact force, flame and splash generated by the explosion from spreading to the surroundings, thereby protecting the safety of the test personnel and surrounding equipment.

[0040] In this embodiment, specifically: an exhaust port 22 is opened on the cover door 21 , and the exhaust port 22 is arranged at the lower half of the cover door 21 .

[0041] In this embodiment, specifically: a handle 24 is fixedly connected to the cover door 21 .

[0042] Working principle or structural principle: When conducting a battery puncture test, the staff first connects the input end of the water pump to the water tank, and then places the lithium battery on the working disk 52 of the bearing assembly 5, ensuring that the lithium battery is located directly below the puncture needle 46, and starts the motor 41. The motor 41 drives the threaded rod 44 to rotate. The threaded rod 44 and the top beam 3 move the push plate 45 downward under the action of the threaded transmission. At this time, the guide rod 43 slides on the top beam 3 to provide guidance for the movement of the push plate 45, thereby driving the puncture needle 46 fixed at the bottom of the push plate 45 to approach the lithium battery and finally puncture the lithium battery;

[0043] During the preparation process, the staff closes the cover door 21 using the two handles 24. The cover door 21 is hingedly connected to the support base 1. After the cover door 21 is closed, the lithium battery is isolated inside, thereby providing protection and explosion-proofing for the puncture test. When conducting the puncture test, the staff observes the internal combustion situation through the observation window 23.

[0044] After the puncture is completed, the water pump 48 is started to spray water to the puncture head 47 through the water spray head 49 to cool down the temperature of the lithium battery to avoid secondary combustion of the lithium battery due to incomplete combustion, so as to protect the staff.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery puncture test device with an explosion-proof mechanism, characterized in that: It comprises a support base (1), a protective cover (2), a top beam (3), a puncture assembly (4) and a bearing assembly (5), wherein the top beam (3) is fixedly connected to the top of the support base (1); The puncture assembly (4) is arranged on the top beam (3) for puncturing the lithium battery. The puncture assembly (4) comprises a motor (41), a threaded rod (44), a push plate (45) and a puncture needle (46). The threaded rod (44) is fixedly mounted on the output end of the motor (41). One end of the threaded rod (44) is rotatably connected to the push plate (45) and is configured to drive the push plate (45) to move up and down. The puncture needle (46) is fixedly mounted on the bottom of the push plate (45) for puncturing the lithium battery. The protective cover (2) is hingedly connected to two sides of the support base (1), and the protective cover (2) comprises two symmetrically arranged cover doors (21), and when the cover doors (21) are closed, the lithium battery is wrapped and isolated; The bearing assembly (5) is fixed on the supporting base (1) and is located below the puncture assembly (4) to bear the lithium battery.

2. A battery puncture test device with an explosion-proof mechanism according to claim 1, characterized in that: A puncture head (47) is provided at the bottom of the puncture needle (46). The puncture head (47) is a conical structure, and the tip of the puncture head (47) is vertically downward.

3. A battery puncture test device with an explosion-proof mechanism according to claim 2, characterized in that: The puncture assembly (4) further comprises a water pump (48) fixedly mounted on the top beam (3); the output end of the water pump (48) is connected to a water spray head (49); the water outlet of the water spray head (49) faces the puncture head (47).

4. A battery puncture test device with an explosion-proof mechanism according to claim 3, characterized in that: A guide rod (43) is slidably connected to the top beam (3), and two ends of the guide rod (43) are respectively fixedly connected to the lifting plate (42) and the pushing plate (45).

5. A battery puncture test device with an explosion-proof mechanism according to claim 4, characterized in that: The middle portion of the threaded rod (44) is threadedly connected to the top beam (3).

6. A battery puncture test device with an explosion-proof mechanism according to claim 5, characterized in that: The bearing assembly (5) comprises a bearing frame (51) fixed on the supporting base (1), a working disk (52) being fixedly connected to the bearing frame (51), a clearance hole (53) being provided on the working disk (52), and the clearance hole (53) being arranged below the puncture needle (46).

7. A battery puncture test device with an explosion-proof mechanism according to claim 6, characterized in that: The cover door (21) is provided with an observation window (23), and the observation window (23) is at the same horizontal position as the bearing assembly (5).

8. A battery puncture test device with an explosion-proof mechanism according to claim 7, characterized in that: The cover door (21) is provided with an exhaust port (22), and the exhaust port (22) is arranged at the lower half of the cover door (21).

9. A battery puncture test device with an explosion-proof mechanism according to claim 8, characterized in that: A handle (24) is fixedly connected to the cover door (21).

Images