CN212622954U - Lithium cell detects uses short-circuit protection device - Google Patents

Abstract

The utility model discloses a lithium cell detects uses short-circuit protection device relates to the lithium cell field of testing, has the problem of safety risk to current lithium ion battery test, now proposes following scheme, and it includes the shell, set up the cavity in the shell, just install damping rod, spring, guide arm and push pedal in the cavity, damping rod, spring and guide arm all are the symmetric distribution about the shell, just the both ends shell that damping rod, spring and guide arm kept away from each other, set up the cavity in the shell, just install damping rod, spring, guide arm and push pedal in the cavity, damping rod, spring and guide arm all are the symmetric distribution about the shell, just the both ends that damping rod, spring and guide arm kept away from each other all are fixed connection with the shell. The utility model discloses novel structure, and the device simple structure, degree of automation are high and safe and reliable, the effectual problem of having solved lithium ion battery test and having the safe risk.

Description

Lithium cell detects uses short-circuit protection device

Technical Field

The utility model relates to a lithium cell detection area especially relates to a lithium cell detects uses short-circuit protection device.

Background

The lithium battery is a high-efficiency power supply device, compared with a lead-acid battery, the lithium battery has higher energy density, smaller volume and no memory effect, the lithium battery has no special requirements on the installation angle, the lead-acid battery must be installed according to a specified angle to avoid damage caused by backflow of battery liquid, however, the lithium ion battery also has the defects, irreversible damage such as battery bulge and the like is easily caused by long-term full-charge storage, meanwhile, the lithium ion battery is more dangerous than other batteries when dangerous situations such as short circuit and the like occur, and ignition and explosion are easily caused, although the safety performance of the lithium ion battery is greatly improved by the novel lithium iron phosphate, the battery technology of the lithium ion still has improved space, in the research and development process of various novel lithium ion battery technologies, tests such as overshoot, over-discharge, storage, short circuit and the like are inevitably carried out, and the, once the battery reaches the limit and deflagration occurs, high-temperature flame and toxic smoke can be continuously ejected, so that the test process is safe and controllable, and the short-circuit protection device for lithium battery detection is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of lithium cell detects uses short-circuit protection device has solved the problem that there is the safety risk in the lithium ion battery test.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a short-circuit protection device for lithium battery detection comprises a shell, wherein a cavity is formed in the shell, a damping rod, a spring, a guide rod and a push plate are mounted in the cavity, the damping rod, the spring and the guide rod are symmetrically distributed relative to the shell, the two ends of the shell, far away from each other, of the damping rod, the spring and the guide rod are respectively and fixedly connected with the shell, the cavity is formed in the shell, the damping rod, the spring, the guide rod and the push plate are mounted in the cavity, the damping rod, the spring and the guide rod are symmetrically distributed relative to the shell, the two ends, far away from each other, of the damping rod, the spring and the guide rod are respectively and symmetrically distributed at the top end and the bottom end of the spring, the two ends, close to each other, of the damping rod and the spring are respectively and fixedly connected with the push plate, the damping rod and the spring are respectively and mutually perpendicular to the push plate, the push plate is, the spring cup joints in the damping rod, just the guide arm is located the top and the bottom of spring and is the symmetric distribution, the both ends that damping rod and spring are close to each other respectively with push pedal fixed connection, and damping rod and spring all are the perpendicular form of each other with the push pedal, the push pedal is vertical form, just the guide arm all runs through in the push pedal, the guide arm all is sliding connection with the push pedal, just lie in the cavity and install baffle and flat board between the guide arm, the flat board is the level form, just the baffle is the symmetric distribution about the flat board, the flat board is evenly distributed along the direction of height of baffle, and two sets of the both sides that the baffle is close to each other are located the equal fixedly connected with link plate in dull and.

Preferably, the two ends of the guide rod, which are close to each other, are fixedly sleeved with fixing blocks, and the fixing blocks are fixedly connected with the shell.

Preferably, the top end of the shell is hermetically connected with exhaust passages, the exhaust passages are symmetrically distributed around the shell, notches are formed in the positions, located on the two groups of exhaust passages, of the shell and penetrate through the top end of the shell, and the top end openings of the exhaust passages are hermetically connected with corrugated pipes.

Preferably, the bottom of shell matches and installs the chassis, just install the support in the chassis, the fire extinguisher is installed on the top of support, just the spout sealing connection of fire extinguisher has the spray tube, the top and the cavity intercommunication of spray tube, just the pipe is installed to the bottom of shell, the pipe runs through in the low side and the chassis of shell, just the valve of fire extinguisher matches and installs the stay cord, the stay cord runs through in the pipe, just the top and the push pedal fixed connection of stay cord.

Preferably, the bracket, the fire extinguisher, the spray pipe, the conduit and the pull rope are symmetrically distributed around the chassis.

The utility model has the advantages that:

1. the device converts the internal energy of deflagration gas into mechanical energy and elastic potential energy through spring and damping rod, cushions the detonation impact, through push pedal and spring control notch aperture, avoids deflagration air current directly to get into and leads to ring can the structure to lose efficacy in the exhaust passage.

2. The device carries out the overlap joint installation through the link plate on the dull and stereotyped overlap joint baffle to convenient to use, conveniently carries out multiunit battery test through setting up the dull and stereotyped multilayer.

3. The device pulls the stay cord through the push pedal, pulls the fire extinguisher switch through the stay cord for the fire extinguisher can be automatic triggering when the battery deflagrates, and pure mechanical trigger structure makes the device simple reliable.

In conclusion, the device has the advantages of simple structure, high automation degree, safety and reliability, and effectively solves the problem of safety risk in the lithium ion battery test.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a sectional view of the internal structure of the present invention.

Fig. 3 is an enlarged view of a structure in fig. 2 according to the present invention.

Reference numbers in the figures: 1. a housing; 2. a cavity; 3. a damping lever; 4. a spring; 5. a guide bar; 6. pushing the plate; 7. a fixed block; 8. a partition plate; 9. hanging the plate; 10. a flat plate; 11. a notch; 12. an exhaust passage; 13. a bellows; 14. a chassis; 15. a support; 16. a fire extinguisher; 17. a nozzle; 18. pulling a rope; 19. a conduit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a short circuit protection device for lithium battery detection comprises a housing 1, a cavity 2 is formed in the housing 1, a damping rod 3, a spring 4, a guide rod 5 and a push plate 6 are installed in the cavity 2, the damping rod 3, the spring 4 and the guide rod 5 are symmetrically distributed about the housing 1, two ends of the damping rod 3, the spring 4 and the guide rod 5, which are far away from each other, are fixedly connected with the housing 1, the spring 4 is sleeved on the damping rod 3, the guide rod 5 is located at the top end and the bottom end of the spring 4 and symmetrically distributed, two ends of the damping rod 3, which are close to each other, of the spring 4 are fixedly connected with the push plate 6 respectively, the damping rod 3 and the spring 4 are perpendicular to the push plate 6, the push plate 6 is vertical, the guide rod 5 penetrates through the push plate 6, the guide rod 5 is slidably connected with the push plate 6, a partition plate 8 and a flat plate 10 are installed between the guide rods 5 in the cavity 2, the flat plate 10 is horizontal, the partition plates 8 are symmetrically distributed about the flat plate 10, the flat plate 10 is uniformly distributed along the height direction of the partition plates 8, two groups of partition plates 8 are symmetrically distributed at the two sides close to each other at the bottom end of the flat plate 10, the guide rods 5 are fixedly sleeved with fixing blocks 7 at the two ends close to each other, the fixing blocks 7 are fixedly connected with the shell 1, the top end of the shell 1 is hermetically connected with an exhaust passage 12, the exhaust passage 12 is symmetrically distributed about the shell 1, notches 11 are formed at the positions, located in the two groups of exhaust passages 12, of the shell 1 and penetrate through the top end of the shell 1, corrugated pipes 13 are hermetically connected with openings at the top end of the exhaust passage 12, a bottom frame 14 is installed at the bottom end of the shell 1 in a matching manner, a support 15 is installed in the bottom frame 14, and a fire extinguisher 16 is installed at, and the nozzle of the fire extinguisher 16 is hermetically connected with a spray pipe 17, the top end of the spray pipe 17 is communicated with the cavity 2, the bottom end of the shell 1 is provided with a conduit 19, the conduit 19 penetrates through the low end of the shell 1 and the bottom frame 14, a pull rope 18 is matched and installed on a valve of the fire extinguisher 16, the pull rope 18 penetrates through the conduit 19, the top end of the pull rope 18 is fixedly connected with the push plate 6, and the support 15, the fire extinguisher 16, the spray pipe 17, the conduit 19 and the pull rope 18 are symmetrically distributed about the bottom frame 14.

The working principle is as follows: the device is a lithium battery test explosion-proof device, and can be used indoors and outdoors, a flat plate 10 of the device is installed by a hanging plate 9 on a lapping clapboard 8, and a plurality of layers are convenient for testing a plurality of groups of batteries, the clapboard 8 of the device is made of gypsum (flame retardant), the device is damaged and replaceable, a corrugated pipe 13 of the device is made of thick aluminum foil and communicated with a poisonous and harmful gas processing device, if deflagration occurs in the test, the clapboard 8 is flushed by the blast generated by deflagration and rapidly expands in a shell 1, the expanding gas carries flame and poisonous smoke to enter an exhaust passage 12 through a notch 11, the expanding gas is blocked by a push plate 6 at the moment, the notch 11 is not completely unfolded to a test area, the exhaust speed is far lower than the deflagration gas expansion speed, the push plate 6 is impacted by airflow and slides along a guide rod 5 and compresses a spring 4 and a damping rod 3, and in, the increase of the area is opened to notch 11 makes the displacement also increase, the pressure in the shell 1 has been alleviated, convert the internal energy of deflagration gas into mechanical energy and elastic potential energy through spring 4 and damping rod 3 simultaneously, cushion the detonation impact, toxic gas then along with exhaust passage 12 and bellows 13 discharge the device, meanwhile, the removal through push pedal 6 drags stay cord 18, pull open the valve of fire extinguisher 16 through stay cord 18, make the dry powder spout 17 into in the shell 1 through the spray tube, suppress deflagration intensity of a fire, finally control the damage of battery deflagration at the inside digestion of the device, protection device external equipment and personal safety.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a lithium cell detects uses short-circuit protection device, includes shell (1), its characterized in that, seted up cavity (2) in shell (1), just install damping rod (3), spring (4), guide arm (5) and push pedal (6) in cavity (2), damping rod (3), spring (4) and guide arm (5) all are the symmetric distribution about shell (1), just damping rod (3), spring (4) and guide arm (5) both ends of keeping away from each other all are fixed connection with shell (1), spring (4) cup joint in damping rod (3), just guide arm (5) are located the top and the bottom of spring (4) and are the symmetric distribution, damping rod (3) and spring (4) both ends that are close to each other respectively with push pedal (6) fixed connection, and damping rod (3) and spring (4) all are mutually perpendicular form with push pedal (6), push pedal (6) are vertical form, just guide arm (5) all run through in push pedal (6), guide arm (5) all are sliding connection with push pedal (6), just be located and install baffle (8) and flat board (10) between guide arm (5) in cavity (2), flat board (10) are the level form, just baffle (8) are the symmetric distribution about flat board (10), flat board (10) are evenly distributed along the direction of height of baffle (8), and two sets of baffle (8) both sides that are close to each other are located the equal fixedly connected with link plate (9) in bottom of flat board (10).

2. The short-circuit protection device for detecting the lithium battery as claimed in claim 1, wherein the two ends of the guide rod (5) close to each other are fixedly sleeved with fixing blocks (7), and the fixing blocks (7) are fixedly connected with the housing (1).

3. The lithium battery short-circuit protection device for detection according to claim 1, wherein the top end of the housing (1) is hermetically connected with the exhaust passages (12), the exhaust passages (12) are symmetrically distributed with respect to the housing (1), the housing (1) is provided with notches (11) at two sets of exhaust passages (12), the notches (11) penetrate through the top end of the housing (1), and the top end openings of the exhaust passages (12) are hermetically connected with corrugated pipes (13).

4. The lithium battery short-circuit protection device for detection according to claim 1, wherein a bottom frame (14) is installed at the bottom end of the housing (1) in a matched manner, a support (15) is installed in the bottom frame (14), a fire extinguisher (16) is installed at the top end of the support (15), a spray nozzle (17) is connected to a spray nozzle of the fire extinguisher (16) in a sealing manner, the top end of the spray nozzle (17) is communicated with the cavity (2), a guide pipe (19) is installed at the bottom end of the housing (1), the guide pipe (19) penetrates through the bottom end of the housing (1) and the bottom frame (14), a pull rope (18) is installed on a valve of the fire extinguisher (16) in a matched manner, the pull rope (18) penetrates through the guide pipe (19), and the top end of the pull rope (18) is fixedly connected with.

5. The lithium battery short-circuit protection device for detection according to claim 4, wherein the bracket (15), the fire extinguisher (16), the spray pipe (17), the conduit (19) and the pull rope (18) are symmetrically distributed about the chassis (14).

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