CN215578742U

CN215578742U - Lithium battery cell suitable for ultra-low temperature environment

Info

Publication number: CN215578742U
Application number: CN202121874991.8U
Authority: CN
Inventors: 王先义
Original assignee: Tianjin Tianyuan Technology Co ltd
Current assignee: Tianjin Tianyuan Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-18
Anticipated expiration: 2031-08-12

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a lithium battery cell suitable for an ultralow temperature environment, which comprises a lower shell and an upper shell, wherein the inner surfaces of the lower shell and the upper shell are respectively and fixedly connected with a lower heat insulation pipe and an upper heat insulation pipe, the bottom surface of the lower heat insulation pipe and the top surface of the upper heat insulation pipe are respectively provided with an air inlet groove and an air outlet hole, and the bottom surface of the lower shell is provided with a mounting groove. This lithium cell electricity core suitable for under ultra-low temperature environment, the medial surface decibel through last casing and casing down is fixed goes up insulating tube and insulating tube down, fan and heating pipe are add through the bottom surface of casing down, make to utilize the fan to blow in the insulating tube down with the air after the heating, give last insulating tube with the heat transfer through insulating tube down, the heating of encircleing of trying down electric core, the homogeneity of heating is improved, and it is thermal-insulated to realize through last heating pipe and lower heating pipe, avoid hot-blast direct contact electric core, improve heating security, excellent in use effect.

Description

Lithium battery cell suitable for ultra-low temperature environment

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery cell suitable for an ultralow temperature environment.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, lithium ion batteries were proposed and started to be studied. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries become mainstream at present, most of batteries for electric vehicles in the market adopt lithium batteries, the effect is very good, and the service life is remarkably prolonged.

The existing lithium battery cell suitable for the ultra-low temperature environment is sealed tightly by the upper shell and the lower shell because the cell is arranged in the upper shell and the lower shell in the using process, the lithium battery needs to be heated and insulated when the lithium battery is used in the low temperature environment, the using effect is improved, the existing heating mode is not uniform enough, the temperature heat is directly contacted with the cell, the local high heating is presented, the actual heating effect of the cell is not good, and the using effect is poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the lithium battery cell suitable for the ultralow temperature environment, which has the advantages of uniform heating and convenient disassembly and assembly, and solves the problems in the background technology.

The utility model provides the following technical scheme: the utility model provides a lithium cell electricity core suitable for ultra-low temperature environment down, includes casing and last casing down, insulating tube and last insulating tube under the internal surface difference fixedly connected with of casing and last casing down, air inlet duct and venthole have been seted up respectively to the bottom surface of insulating tube and the top surface of last insulating tube down, the mounting groove has been seted up to the bottom surface of casing down, the inside fixedly connected with baffle of mounting groove, the internally mounted of mounting groove has the heating pipe, the bottom surface fixedly connected with installing frame of casing down, the inside fixed mounting of installing frame has the fan, and the groove of breathing in has been seted up to the bottom surface of the fan of telling, be equipped with electric core down between casing and the last casing.

Preferably, the top surface of the lower shell is provided with a ring groove, the bottom surface of the upper shell is fixedly connected with a sealing frame, and the inner surface of the ring groove is movably clamped with the sealing frame.

Preferably, a threaded hole is formed in the side face of the lower shell and communicated with the annular groove, and a bolt is sleeved on the inner surface of the threaded hole in a threaded manner.

Preferably, the top surface of the upper shell is provided with a communication hole, and the communication hole is communicated with the air outlet hole.

Preferably, the top surface of the upper shell is fixedly connected with a limiting frame, and the side surface of the limiting frame is provided with a side groove.

Compared with the prior art, the utility model has the following beneficial effects:

1. this lithium cell electricity core suitable for under ultra-low temperature environment, the medial surface decibel through last casing and casing down is fixed goes up insulating tube and insulating tube down, fan and heating pipe are add through the bottom surface of casing down, make to utilize the fan to blow in the insulating tube down with the air after the heating, give last insulating tube with the heat transfer through insulating tube down, the heating of encircleing of trying down electric core, the homogeneity of heating is improved, and it is thermal-insulated to realize through last heating pipe and lower heating pipe, avoid hot-blast direct contact electric core, improve heating security, excellent in use effect.

2. This lithium battery cell suitable for under ultra-low temperature environment is through being divided into casing and lower casing with the shell to the annular is seted up to the top surface of casing under, and the sealed frame that utilizes the upper casing bottom surface cup joints with the annular, and set up the bolt in the side and cup joint with the screw hole, realizes that the clamp of sealed frame is tight fixed, guarantees that the installation of casing and lower casing is stable, and the dismouting is convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the structure of the present invention;

FIG. 4 is a schematic cross-sectional view of the lower and upper housings of the inventive structure;

FIG. 5 is a schematic cross-sectional view of the upper and lower insulating tubes of the structure of the present invention.

In the figure: 1. a lower housing; 2. an upper housing; 3. a lower heat preservation pipe; 4. an upper heat preservation pipe; 5. an electric core; 6. an air inlet groove; 7. an air outlet; 8. mounting grooves; 9. heating a tube; 10. installing a frame; 11. a fan; 12. a suction groove; 13. a partition plate; 14. a ring groove; 15. a sealing frame; 16. a threaded hole; 17. a bolt; 18. a limiting frame; 19. a side groove; 20. and a communicating hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1-5, a lithium battery cell suitable for ultra-low temperature environment, comprising a lower casing 1 and an upper casing 2, wherein the inner surfaces of the lower casing 1 and the upper casing 2 are respectively fixedly connected with a lower heat preservation pipe 3 and an upper heat preservation pipe 4, the bottom surface of the lower heat preservation pipe 3 and the top surface of the upper heat preservation pipe 4 are respectively provided with an air inlet groove 6 and an air outlet hole 7, the bottom surface of the lower casing 1 is provided with a mounting groove 8, the inside of the mounting groove 8 is fixedly connected with a partition plate 13, the inside of the mounting groove 8 is provided with a heating pipe 9, the bottom surface of the lower casing 1 is fixedly connected with a mounting frame 10, the inside of the mounting frame 10 is fixedly provided with a fan 11, the bottom surface of the fan 11 is provided with an air suction groove 12, and the battery cell 5 is arranged between the lower casing 1 and the upper casing 2.

Wherein, annular groove 14 has been seted up to the top surface of casing 1 down, and the bottom surface fixedly connected with sealing frame 15 of casing 2 goes up, and the internal surface of annular groove 14 and sealing frame 15 activity joint utilize annular groove 14 and sealing frame 15's activity joint, guarantee casing 1 heat transfer down and go up the sealing connection of casing 2.

Wherein, the side of lower casing 1 is seted up threaded hole 16, and threaded hole 16 and annular 14 intercommunication, and the internal surface screw thread of threaded hole 16 cup joints bolt 17, utilizes the screw thread of bolt 17 and threaded hole 16 to cup joint, realizes pressing from both sides tight fixed to sealed frame 15.

The top surface of the upper shell 2 is provided with a communicating hole 20, the communicating hole 20 is communicated with the air outlet hole 7, and the communicating hole 20 is communicated with the air outlet hole 7 to discharge air after heat exchange, so that continuous and efficient heat preservation is realized.

Wherein, the top surface fixedly connected with of last casing 2 spacing frame 18, side slot 19 has been seted up to the side of spacing frame 18, makes under the non-heating condition, and the dust can not fall into in last insulating tube 4 through addding spacing frame 18.

The working principle is as follows: when the disassembly and assembly are carried out, the bolt 17 is screwed out, and the upper shell 2 is pulled upwards, so that the sealing frame 15 on the bottom surface of the upper shell 2 is taken out from the annular groove 14 on the top surface of the lower shell 1, and the disassembly is finished; during heating, the fan 11 and the heating pipe 9 are started, so that the temperature of the external air is raised and blown into the lower heat preservation pipe 3 and flows to the upper heat preservation pipe 4, and the air after heat exchange is discharged through the air outlet 7 on the top surface of the upper heat preservation pipe 4.

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.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium battery cell suitable for ultra-low temperature environment under, includes casing (1) and last casing (2) down, its characterized in that: lower casing (1) and the internal surface of last casing (2) be insulating tube (3) and last insulating tube (4) down fixedly connected with respectively, air inlet duct (6) and venthole (7) have been seted up respectively to the bottom surface of insulating tube (3) and the top surface of last insulating tube (4) down, mounting groove (8) have been seted up to the bottom surface of casing (1) down, the inside fixedly connected with baffle (13) of mounting groove (8), the internally mounted of mounting groove (8) has heating pipe (9), the bottom surface fixedly connected with installing frame (10) of casing (1) down, the inside fixed mounting of installing frame (10) has fan (11), and air suction groove (12) have been seted up to the bottom surface of the fan (11) of telling, be equipped with electric core (5) down between casing (1) and last casing (2).

2. The lithium battery cell applicable to an ultra-low temperature environment according to claim 1, wherein: annular groove (14) have been seted up to the top surface of lower casing (1), the bottom surface fixedly connected with sealing frame (15) of going up casing (2), the internal surface and the sealing frame (15) activity joint of annular groove (14).

3. The lithium battery cell applicable to an ultra-low temperature environment according to claim 1, wherein: threaded hole (16) are seted up to the side of lower casing (1), threaded hole (16) and annular (14) intercommunication, the internal surface screw thread cup joints bolt (17) of threaded hole (16).

4. The lithium battery cell applicable to an ultra-low temperature environment according to claim 1, wherein: the top surface of the upper shell (2) is provided with a communicating hole (20), and the communicating hole (20) is communicated with the air outlet hole (7).

5. The lithium battery cell applicable to an ultra-low temperature environment according to claim 4, wherein: the top surface of the upper shell (2) is fixedly connected with a limiting frame (18), and the side surface of the limiting frame (18) is provided with a side groove (19).