CN212461842U - Overcharge protection cover plate for power lithium battery - Google Patents

Abstract

The utility model relates to the technical field of power lithium batteries, and discloses an overcharge protection cover plate of a power lithium battery, which comprises a cover plate, wherein the top of the cover plate is respectively provided with a positive pole column and a negative pole column; the utility model provides a present overcharge protection apron of power lithium cell can't prevent the lithium cell weeping and can't be to the absorbing problem of lithium cell at the in-process that the lithium cell used when the lithium cell is emptyd, through the mode with injection port thorough seal, even if the condition that electrolyte was revealed can not appear also empting in the lithium cell, injection port after sealed simultaneously can not influence the injection of later stage to electrolyte yet, the leakproofness of apron has not only been improved, the while has also reduced electrolyte and has revealed the injury that can cause the human body, through spring shock attenuation mode, let the lithium cell in the removal process can unload the power that jolts and bring when meetting jolting, make the lithium cell can not break away from the mounted position of lithium cell.

Description

Overcharge protection cover plate for power lithium battery

Technical Field

The utility model relates to a power lithium cell technical field specifically is a power lithium cell overcharge protection apron.

Background

The power battery is a power source for providing power source for the tool, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts.

Through massive retrieval, the Chinese utility model patent: application No.: 201720844715.4, publication No.: CN207009545U discloses a power lithium cell overcharge protection apron, includes: apron base member and conducting plate, wherein: the cover plate matrix is positioned on one side of the conductive pole plate and connected with each other through the conductive pole column, and insulating parts are arranged between the cover plate matrix and the conductive pole column as well as between the cover plate matrix and the conductive pole plate; an electronic element which is connected with the cover plate matrix and the conductive polar plate and is controlled by voltage to be conducted is arranged between the cover plate matrix and the conductive polar plate. The utility model discloses a set up between apron base member and conducting plate and be connected the two electronic component to make this electronic component be the electronic component who receives the voltage control guidance and lead to, in order to utilize the automatic break-make that forms of change of electronic component both ends voltage, and then realize the purpose of battery overcharge protection. The cover plate can realize the overcharge protection of the battery without adding a gas production material in the power lithium battery, and can not cause the increase of the internal pressure of the battery, thereby greatly improving the safety of the battery.

In conclusion, in the process of using the cover plate in cooperation with a power battery, in order to conveniently inject the electrolyte of the lithium battery, a liquid infusion port of the electrolyte is not thoroughly sealed, if the lithium battery is toppled, the electrolyte in the lithium battery can leak, the electrolyte can be rapidly volatilized into gas after contacting with air, the gas can not only cause harm to a human body, but also influence the use of people on the lithium battery due to the leakage of the electrolyte, and if the lithium battery is bumpy in the using process, the lithium battery can also bump along with the bump, and can be separated from the installation position in the bumping process, so that the lithium battery can be squeezed and collided, the service life of the lithium battery can be greatly shortened in long-time use, and meanwhile, the pressure in the lithium battery can be unstable, and accordingly, the explosion can occur, therefore, in order to solve the above problems, we provide an overcharge protection cover plate for a power lithium battery.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power lithium cell overcharge protection apron possesses leak protection liquid and can be to power lithium cell absorbing advantage, and the overcharge protection apron of having solved present power lithium cell can't prevent the lithium cell weeping and can't be to the absorbing problem of lithium cell at the in-process that the lithium cell used when the lithium cell is emptyd.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a power lithium cell overcharge protection apron, includes the apron, anodal utmost point post and negative pole post are installed respectively to the top of apron, the injection port has been seted up at the top of apron, the inside of injection port is embedded to have the spiral sealing member, the bottom of injection port is equipped with the flexible pipe with the apron bolt joint, the spout has been seted up to the equal symmetry in both sides of apron, the bottom cover of apron is equipped with the buffering shell, the equal symmetry in both sides of buffering shell inner chamber has bolted the slider with spout sliding connection, the both sides of apron inner chamber have all been bolted the locating piece one, the bottom of locating piece one has been bolted the spring through spring mounting, the bottom of spring has been bolted the locating piece two with the buffering shell bolt joint through spring mounting.

Preferably, the top of the cover plate is provided with an explosion-proof valve, and the bottom of the explosion-proof valve is provided with an explosion-proof membrane.

Preferably, two rivets are installed in the positive pole post and the negative pole post.

Preferably, the surface of the rivet is sleeved with an insulating pad.

Preferably, the bottom of the buffer shell is provided with an installation groove.

Preferably, the spiral sealing element is made of silica gel.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses an injection port, spiral sealing member and flexible setting of pipe have solved the problem that the overcharge protection apron of present power lithium cell can't prevent the lithium cell weeping when the lithium cell emptys, and the device is through the mode with injection port thoroughly sealed, even if the lithium cell appears emptying the condition that can no longer appear electrolyte and reveal, and the injection port after the sealing simultaneously can not influence the injection of later stage to electrolyte yet, has not only improved the leakproofness of apron, has also reduced the injury that electrolyte reveals can cause the human body simultaneously;

the utility model discloses a spout, the buffer shell, the slider, locating piece one, the setting of spring and locating piece two, the in-process that the overcharge protection apron of having solved present power lithium cell is used at the lithium cell can't be to the absorbing problem of lithium cell, the device passes through spring damping's mode, let the lithium cell of removal in-process can unload the power of jolting and bringing when meetting jolting, make the lithium cell can not break away from the mounted position of lithium cell, and also make the lithium cell can not appear being collided and the extruded condition, the life of lithium cell has not only been prolonged, the stability of the inside atmospheric pressure of lithium cell has also been guaranteed simultaneously.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of the cover plate of the present invention;

fig. 3 is a sectional view of the structure of the present invention.

In the figure: 1. a cover plate; 2. a positive pole column; 3. a negative electrode post; 4. an injection port; 5. a spiral seal; 6. a telescopic pipe; 7. a chute; 8. a buffer shell; 9. a slider; 10. a first positioning block; 11. a spring; 12. a second positioning block; 13. an explosion-proof valve; 14. an explosion-proof membrane; 15. riveting; 16. an insulating pad; 17. and (4) mounting the groove.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an overcharge protection cover plate for a power lithium battery comprises a cover plate 1, a positive electrode post 2 and a negative electrode post 3 are respectively mounted on the top of the cover plate 1, an injection port 4 is formed on the top of the cover plate 1, a spiral sealing member 5 is embedded in the injection port 4, a telescopic pipe 6 bolted to the cover plate 1 is arranged at the bottom of the injection port 4, sliding grooves 7 are symmetrically formed on both sides of the cover plate 1, a buffer shell 8 is sleeved at the bottom of the cover plate 1, sliding blocks 9 slidably connected to the sliding grooves 7 are symmetrically bolted to both sides of an inner cavity of the buffer shell 8, a first positioning block 10 is bolted to both sides of the inner cavity of the cover plate 1, a spring 11 is bolted to the bottom of the first positioning block 10 through a spring fixing member, a second positioning block 12 bolted to the buffer shell 8 through a spring fixing member at the bottom of the spring 11, and a second positioning block 12 bolted, The buffer shell 8, the sliding block 9, the first positioning block 10, the spring 11 and the second positioning block 12 are arranged, the problems that the overcharge protection cover plate of the conventional power lithium battery cannot prevent leakage of the lithium battery when the lithium battery is toppled over and cannot absorb shock to the lithium battery when the lithium battery is used are solved, the electrolyte leakage cannot occur even if the lithium battery is toppled over in a mode of thoroughly sealing an injection port, meanwhile, the injection port after sealing cannot influence the later injection of the electrolyte, the sealing performance of the cover plate is improved, the damage to a human body caused by the leakage of the electrolyte is reduced, the force caused by bumping can be removed when the lithium battery in the moving process bumps in a spring shock absorption mode, the lithium battery cannot be separated from the installation position of the lithium battery, and the lithium battery cannot be collided and extruded, the service life of the lithium battery is prolonged, and meanwhile, the stability of the air pressure inside the lithium battery is also guaranteed.

Furthermore, explosion-proof valve 13 is installed at the top of apron 1, and explosion-proof diaphragm 14 is installed to the bottom of explosion-proof valve 13, through explosion-proof valve 13 and explosion-proof diaphragm 14's setting, has played the effect of explosion-proof, can effectually unload the gas that the lithium cell produced.

Further, two rivets 15 are installed in the positive electrode pole 2 and the negative electrode pole 3, and the setting of the rivets 15 can effectively limit the positive electrode pole 2 and the negative electrode pole 3.

Further, the surface cover of rivet 15 is equipped with insulating pad 16, through insulating pad 16's setting, has played insulating effect, makes insulating pad 16 can not directly extrude anodal utmost point post 2 and negative terminal 3 when fixing anodal utmost point post 2 and negative terminal 3.

Further, the mounting groove 17 has been seted up to the bottom of buffer shell 8, through the setting of mounting groove 17, has been convenient for the user to the installation of power lithium cell.

Further, the material of spiral sealing member 5 specifically is silica gel, and the material through spiral sealing member 5 is the setting of silica gel, lets the user when annotating the liquid to the lithium cell, can be steady fix the syringe.

The working principle is as follows: when the power lithium battery is injected, the injector is inserted into the injection port 4 through the spiral sealing element 5, at the moment, the spiral sealing element 5 can be scattered around, then the injector can enter the telescopic pipe 6, then a user can directly inject, the injector is pulled out after injection is finished, and the scattered spiral sealing element 5 can be quickly restored to the original shape after the injector is pulled out, so that the effect of completely sealing the injection port 4 is achieved;

and the power lithium cell receives when jolting at the in-process that removes, the lithium cell can drive buffering shell 8 through the cooperation between spout 7 and the slider 9 and upwards remove, and can extrude spring 11 when buffering shell 8 upwards removes, later spring 11 can drive the quick reset that resets of buffering shell 8, and then can drive the lithium cell when buffering shell 8 resets and reset, later spring 11 can be continuous carries out reciprocating motion, and the in-process that carries out reciprocating motion at spring 11 can will jolt the power that produces and unload gradually, thereby the effectual stability of lithium cell in the removal process of having guaranteed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a power lithium cell overcharge protection apron, includes apron (1), its characterized in that: the top of the cover plate (1) is respectively provided with an anode pole (2) and a cathode pole (3), an injection port (4) is formed in the top of the cover plate (1), a spiral sealing element (5) is embedded in the injection port (4), the bottom of the injection port (4) is provided with a telescopic pipe (6) which is bolted with the cover plate (1), sliding grooves (7) are symmetrically formed in the two sides of the cover plate (1), a buffer shell (8) is sleeved at the bottom of the cover plate (1), two sides of the inner cavity of the buffer shell (8) are symmetrically bolted with sliding blocks (9) which are in sliding connection with the sliding grooves (7), a first positioning block (10) is bolted on two sides of the inner cavity of the cover plate (1), a spring (11) is bolted on the bottom of the first positioning block (10) through a spring fixing piece, the bottom end of the spring (11) is bolted with a second positioning block (12) which is bolted with the buffer shell (8) through a spring fixing piece.

2. The overcharge protection cover plate for lithium power batteries of claim 1, wherein: an explosion-proof valve (13) is installed at the top of the cover plate (1), and an explosion-proof membrane (14) is installed at the bottom of the explosion-proof valve (13).

3. The overcharge protection cover plate for lithium power batteries of claim 1, wherein: two rivets (15) are arranged inside the positive pole post (2) and the negative pole post (3).

4. The overcharge protection cover plate for lithium power batteries according to claim 3, wherein: the surface of the rivet (15) is sleeved with an insulating pad (16).

5. The overcharge protection cover plate for lithium power batteries of claim 1, wherein: the bottom of the buffer shell (8) is provided with a mounting groove (17).

6. The overcharge protection cover plate for lithium power batteries of claim 1, wherein: the spiral sealing element (5) is made of silica gel.

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