CN213752814U

CN213752814U - Polymer lithium ion battery with high safety performance

Info

Publication number: CN213752814U
Application number: CN202023234929.0U
Authority: CN
Inventors: 裴斧; 杨雄鹰; 向波; 李攀
Original assignee: Heyuan Dongrun New Energy Technology Co ltd
Current assignee: Heyuan Dongrun New Energy Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-07-20
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a polymer lithium ion battery that security performance is high, including casing and lid and lithium cell component, the lid is through a plurality of first bolt fixed mounting in the upper end of casing, fixed mounting has anodal ear and negative pole ear on the lid, anodal ear and negative pole ear respectively with inside anode layer and the cathode layer electric connection of lithium cell component, a plurality of louvres have been seted up to impartial distance on the both sides wall of casing, the external fixed mounting of louvre has the dust screen, equal fixed mounting has two radiator fan on the inner wall of casing both sides, fixed mounting has a plurality of radiating fin on the interior diapire of casing, radiating fin's top fixed mounting has the heating panel, the top coating of heating panel has the adhesive linkage. The utility model relates to a lithium ion battery technical field, simple structure has fine radiating effect, has effectively prolonged lithium ion battery's life.

Description

Polymer lithium ion battery with high safety performance

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to a polymer lithium ion battery that security performance is high.

Background

Lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. In the process of charging and discharging, Li + is inserted and extracted back and forth between the two electrodes, wherein during charging, Li + is extracted from the positive electrode and inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge.

The existing polymer lithium ion battery can emit a large amount of heat in the using process, if the heat cannot be dissipated in time, the polymer lithium ion battery is caused to be in a high-temperature environment for a long time, the service life of the lithium battery is influenced, the phenomena of sparks, spontaneous combustion and even explosion caused by short circuit inside the battery are easily caused, and the safety performance is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a polymer lithium ion battery with high safety performance.

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

the utility model provides a polymer lithium ion battery that security performance is high, includes casing and lid and lithium battery pack, the lid is through the upper end of a plurality of first bolt fixed mounting at the casing, fixed mounting has anodal ear and negative pole ear on the lid, anodal ear and negative pole ear respectively with inside anode layer and the cathode layer electric connection of lithium battery pack, a plurality of louvres have been seted up to impartial distance on the both sides wall of casing, the outside fixed mounting of louvre has the dust screen, equal fixed mounting has two radiator fan on the inner wall of casing both sides, fixed mounting has a plurality of radiating fin on the interior diapire of casing, radiating fin's top fixed mounting has the heating panel, the top coating of heating panel has the adhesive linkage, lithium battery pack passes through the adhesive linkage and bonds at the top of heating panel.

Preferably, the dust screen is fixedly mounted on the outer side wall of the housing through two second bolts.

Preferably, the adhesive layer is heat-conducting silica gel, and the thickness of the adhesive layer is 5-10 mm.

Preferably, a plurality of supporting springs are fixedly mounted on the inner bottom wall of the cover body, a protecting plate is fixedly mounted at the other end of each supporting spring, and the protecting plate is tightly abutted to the top of the lithium battery pack.

Preferably, the top fixed mounting of protection shield has two connecting rods, sliding sleeve is equipped with two sleeves on the connecting rod, telescopic top and the interior diapire fixed connection of lid.

Preferably, a plurality of ring channels have been seted up to the equidistance on the telescopic inside wall, the inside of ring channel is inlayed and is equipped with the ball, the ball offsets with the outer wall of connecting rod.

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

1. increased the inside air circulation nature of casing through the louvre, can ensure the dry ventilation of casing, and then can go out the heat that lithium battery pack produced, play fine dustproof effect through the dust screen, avoid the dust in the air to get into the inside to the casing, the inside air flow of casing has been accelerated through opening of radiator fan, and then the heat that lithium battery pack produced can be taken away fast, the radiating effect has been improved, through the adhesive linkage, heat dissipation plate and radiating fin's cooperation is used and can be dispelled the heat to the casing with lithium battery pack's heat conduction, reach good radiating effect.

2. Can press from both sides tightly lithium battery pack through the cooperation use of supporting spring and protection shield for lithium battery pack fixes and can not rock in the casing, and supporting spring has certain elastic deformation ability simultaneously, so can play the extrusion to lithium battery pack for a long time and have fine buffering effect, when lithium battery pack rocks, can cushion the atress that lithium battery pack received, avoid haring lithium battery pack, be favorable to protecting lithium battery pack, avoid influencing lithium battery pack's quality, lithium battery pack's life has been prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a polymer lithium ion battery with high safety performance provided by the present invention;

fig. 2 is a schematic view of a front-view cross-sectional structure of a polymer lithium ion battery with high safety performance provided by the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 2.

In the figure: 1. a housing; 2. a cover body; 3. a positive tab; 4. a negative tab; 5. a first bolt; 6. heat dissipation holes; 7. a dust screen; 8. a second bolt; 9. a heat radiation fan; 10. a lithium battery pack; 11. an adhesive layer; 12. a heat dissipation plate; 13. a heat dissipating fin; 14. a support spring; 15. a protection plate; 16. a sleeve; 17. a connecting rod; 18. and a ball.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a polymer lithium ion battery with high safety performance, including casing 1, lid 2 and lithium battery pack 10, lid 2 is through a plurality of first bolts 5 fixed mounting in the upper end of casing 1, fixed mounting has positive ear 3 and negative pole ear 4 on lid 2, positive ear 3 and negative pole ear 4 respectively with lithium battery pack 10 inside anode layer and cathode layer electric connection, a plurality of louvres 6 have been seted up to impartial distance on the both sides wall of casing 1, the outside fixed mounting of louvre 6 has dust screen 7, equal fixed mounting has two radiator fan 9 on the inner wall of casing 1 both sides, fixed mounting has a plurality of radiating fin 13 on the interior diapire of casing 1, radiating fin 13's top fixed mounting has heating panel 12, the top coating of heating panel 12 has adhesive layer 11, lithium battery pack 10 passes through adhesive layer 11 and bonds at the top of heating panel 12.

Wherein, dust screen 7 is through two second bolt 8 fixed mounting on the lateral wall of casing 1, and the mode installation that adopts threaded connection is stable, and the convenience is dismantled the washing to dust screen 7.

The adhesive layer 11 is heat-conducting silica gel, the thickness of the adhesive layer 11 is 5-10mm, the heat-conducting silica gel is a high-end heat-conducting compound, the adhesive layer is not solidified, the electric conduction characteristic can avoid risks such as circuit short circuit and the like, and the adhesive layer has excellent moisture-proof, shock-proof, corona-resistant, electric leakage-resistant and chemical medium-resistant performances.

Wherein, fixed mounting has a plurality of supporting spring 14 on the interior diapire of lid 2, supporting spring 14's other end fixed mounting has protection shield 15, protection shield 15 tightly supports with lithium battery pack 10's top, use through supporting spring 14 and protection shield 15's cooperation and can press from both sides tightly lithium battery pack 10, make lithium battery pack 10 fix can not rock in casing 1, supporting spring 14 has certain elastic deformation ability simultaneously, the event can play the effect of extrusion for a long time to lithium battery pack 10 and have fine buffering effect, when lithium battery pack 10 rocks, can cushion lithium battery pack 10 atress, avoid haring lithium battery pack 10, be favorable to protecting lithium battery pack 10, avoid influencing lithium battery pack 10's quality, lithium battery pack 10's life has been prolonged.

Wherein, the top fixed mounting of protection shield 15 has two connecting rods 17, and the slip cap is equipped with two sleeves 16 on connecting rod 17, and the top of sleeve 16 and the interior diapire fixed connection of lid 2 use through sleeve 16 and connecting rod 17's cooperation to carry out spacingly and direction to the removal of protection shield 15, avoid protection shield 15 to take place the skew at the in-process position of removing, improved the stability that protection shield 15 removed.

Wherein, a plurality of ring channels have been seted up to the equidistance on sleeve 16's the inside wall, and the inside of ring channel is inlayed and is equipped with ball 18, and ball 18 offsets with connecting rod 17's outer wall, changes sleeve 16 and connecting rod 17's sliding friction into rolling friction through ball 18, has reduced frictional force, makes connecting rod 17's slip more smooth, can avoid sleeve 16 and connecting rod 17 long-term friction to cause the condition of damage simultaneously.

The working principle is as follows: the utility model discloses in, when lithium ion battery is using, 1 inside air circulation nature of casing has been increased through louvre 6, can ensure 1 dry ventilation of casing, and then can spill the heat that lithium cell component 10 produced, play fine dustproof effect through dust screen 7, avoid the dust in the air to get into the inside to casing 1, the air flow of 1 inside of casing has been accelerated through opening of radiator fan 9, and then the heat that lithium cell component 10 produced can be taken away fast, the radiating effect has been improved, through adhesive linkage 11, heat dissipation plate 12 and radiating fin 13's cooperation is used and can be dispelled the heat on heat lithium cell component 10's heat conduction to casing 1, reach good radiating effect.

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

1. The polymer lithium ion battery with high safety performance comprises a shell (1), a cover body (2) and a lithium battery assembly (10), and is characterized in that the cover body (2) is fixedly arranged at the upper end of the shell (1) through a plurality of first bolts (5), a positive lug (3) and a negative lug (4) are fixedly arranged on the cover body (2), the positive lug (3) and the negative lug (4) are respectively electrically connected with an anode layer and a cathode layer inside the lithium battery assembly (10), a plurality of heat dissipation holes (6) are uniformly arranged on two side walls of the shell (1), a dust screen (7) is fixedly arranged outside the heat dissipation holes (6), two heat dissipation fans (9) are fixedly arranged on inner walls of two sides of the shell (1), a plurality of heat dissipation fins (13) are fixedly arranged on an inner bottom wall of the shell (1), and a heat dissipation plate (12) is fixedly arranged at the tops of the heat dissipation fins (13), the top of the heat dissipation plate (12) is coated with an adhesive layer (11), and the lithium battery pack (10) is adhered to the top of the heat dissipation plate (12) through the adhesive layer (11).

2. The polymer lithium ion battery with high safety performance is characterized in that the dust screen (7) is fixedly arranged on the outer side wall of the shell (1) through two second bolts (8).

3. The polymer lithium ion battery with high safety performance is characterized in that the adhesive layer (11) is heat-conducting silica gel, and the thickness of the adhesive layer (11) is 5-10 mm.

4. The polymer lithium ion battery with high safety performance is characterized in that a plurality of supporting springs (14) are fixedly mounted on the inner bottom wall of the cover body (2), a protecting plate (15) is fixedly mounted at the other end of each supporting spring (14), and the protecting plate (15) is tightly abutted to the top of the lithium battery pack (10).

5. The polymer lithium ion battery with high safety performance is characterized in that two connecting rods (17) are fixedly mounted at the top of the protective plate (15), two sleeves (16) are slidably sleeved on the connecting rods (17), and the top of each sleeve (16) is fixedly connected with the inner bottom wall of the cover body (2).

6. The polymer lithium ion battery with high safety performance is characterized in that a plurality of annular grooves are formed in the inner side wall of the sleeve (16) at equal intervals, balls (18) are embedded in the annular grooves, and the balls (18) are abutted to the outer wall of the connecting rod (17).