CN220042008U

CN220042008U - Lithium battery pack capable of improving safety

Info

Publication number: CN220042008U
Application number: CN202321668469.3U
Authority: CN
Inventors: 陈忠翔; 巫扬勋
Original assignee: Xiamen Aikesun New Energy Technology Co ltd
Current assignee: Xiamen Aikesun New Energy Technology Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-11-17
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to the technical field of lithium battery packs, in particular to a lithium battery pack for improving safety, which comprises a protection frame, electric cores and exhaust fans, wherein a top plate and a bottom plate are fixedly arranged on the protection frame, the electric cores are arranged on the bottom plate, the electric cores are positioned between the top plate and the bottom plate, an exhaust outlet is formed in the protection frame, the exhaust fans are fixedly arranged on the exhaust outlet, air inlets are formed in the side wall of the protection frame, which is far away from the exhaust fans, a plurality of electric cores are arranged on the bottom plate, and the distance between every two adjacent electric cores is 6mm.

Description

Lithium battery pack capable of improving safety

Technical Field

The utility model relates to the technical field of lithium battery packs, in particular to a lithium battery pack with improved safety.

Background

Along with the development of society, the demand for lithium batteries is increased, various serial and parallel combined lithium battery packs are put into use, heat can be generated in the charging and discharging processes of the lithium battery packs due to the internal resistance of the battery cells, particularly in the heavy current working process, more heat is generated, if the heat is not timely emitted, the efficiency of the battery packs can be reduced, and the temperature reaches a certain degree and can also generate irreversible influence on the battery cells. The problem of temperature rise of the lithium battery greatly influences the working efficiency and the potential safety hazard, and needs to be paid attention to solving.

In order to solve the temperature rise problem of the lithium battery pack, the main stream in the market is that a plurality of metal pipelines are arranged in the battery pack through liquid cooling, circulating liquid is introduced into the pipelines to bring heat to the outside, and the temperature is replaced through a certain device to achieve the purpose of cooling.

Through the technology, as the pipeline flows liquid, the connection between the pipes, the pressure bearing condition of the pipeline itself and the like are all at risk of liquid leakage, and the high-temperature liquid flows out to damage the battery, the defect of lower safety is caused.

Based on the above, the present utility model has devised a lithium battery pack with improved safety to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a lithium battery pack with improved heat dissipation function so as to solve the technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lithium battery pack for improving security, includes guard frame, electric core, air exhauster, fixedly on the guard frame be provided with roof and bottom plate, the electric core sets up on the bottom plate, the electric core is located between roof and the bottom plate, the air exit has been seted up on the guard frame, the air exhauster is fixed to be set up on the air exit, the air intake has been seted up on the lateral wall of air exhauster one side is kept away from to the guard frame, the electric core is provided with a plurality ofly on the bottom plate, adjacent two interval between the electric core is 6mm.

Through adopting above-mentioned technical scheme, the group battery carries out the during operation, and drive air exhauster, wind get into from the air intake, when passing through the electric core, take away the heat on the electric core, discharge through the air exit to cool down the group battery, avoid adopting the risk that the liquid cooling exists, reach the effect that improves the security.

Preferably, a plurality of air inlets are formed.

Through adopting above-mentioned technical scheme, a plurality of air intakes carry out the air inlet simultaneously, let the heat dissipation of a plurality of electric cores more even.

Preferably, the width of the air inlet is 4mm.

Through adopting above-mentioned technical scheme, the width of air intake is 4mm, lets wind get into when can reducing in the big granule entering group battery of external world.

Preferably, a positioning plate is arranged in the protection frame, a positioning groove is formed in the positioning plate, and the upper end of the battery cell is located in the positioning groove.

Through adopting above-mentioned technical scheme, the electric core is placed in the constant head tank, can reduce the removal of electric core, reaches the effect of stabilizing electric core.

Preferably, a placing plate is arranged on the bottom plate, a stabilizing groove is formed in the placing plate, and the lower end of the battery cell is placed in the stabilizing groove.

Through adopting above-mentioned technical scheme, the lower extreme of electric core is placed in the stability groove, can further reduce the removal of electric core, reaches the effect of stable electric core.

In summary, the utility model has the following beneficial technical effects: when the battery pack works, the exhaust fan is driven, wind enters from the air inlet, heat on the battery cell is taken away when passing through the battery cell, and is discharged through the air outlet, so that the battery pack is cooled, the risk of liquid cooling is avoided, and the effect of improving safety is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a top plate fixedly arranged on a protection frame in the present embodiment;

FIG. 2 is a schematic diagram of the mounting structure of the positioning plate in the present embodiment;

FIG. 3 is a schematic diagram of the air inlet in the embodiment;

fig. 4 is a schematic view of a mounting structure of the placement board in the present embodiment;

fig. 5 is a schematic structural diagram of the positioning slot in the present embodiment.

In the drawings, the list of components represented by the various numbers is as follows:

1. a protective frame; 2. a battery cell; 3. a bottom plate; 4. placing a plate; 5. a stabilizing groove; 6. a positioning plate; 7. a positioning groove; 8. an air outlet; 9. an air inlet; 10. an exhaust fan; 11. and a top plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is described in further detail below with reference to fig. 1-5.

Referring to fig. 1-5, a lithium battery pack for improving safety comprises a protection frame 1, a battery cell 2 and an exhaust fan 10, wherein a top plate 11 and a bottom plate 3 are fixedly arranged on the protection frame 1, the bottom plate 3 is fixedly arranged on the protection frame 1, a placement plate 4 is fixedly arranged on the bottom plate 3, the placement plate 4 is made of an insulating material, a stabilizing groove 5 is formed in the placement plate 4, and the lower end of the battery cell 2 is placed in the stabilizing groove 5. The fixed locating plate 6 that is provided with on roof 11, the locating plate 6 adopts insulating material to make, the constant head tank 7 has been seted up on the locating plate 6, the upper end of electric core 2 is arranged in constant head tank 7, constant head tank 7 corresponds each other with stable groove 5, when electric core 2 installs, let the lower extreme grafting of electric core 2 in early stable groove 5, establish the constant head tank 7 cover again on the upper end of electric core 2, fix roof 11 on protection frame 1 through the bolt at last, electric core 2 is arranged in constant head tank 7 and stable groove 5, can reduce the removal of electric core 2, the placing of stable electric core 2.

Referring to fig. 1-5, an air outlet 8 is formed in a protection frame 1, an exhaust fan 10 is fixedly arranged on the air outlet 8, an air inlet 9 is formed in the side wall of one side, far away from the exhaust fan 10, of the protection frame 1, a plurality of air inlets 9 are formed in the side wall, the width of each air inlet 9 is 4mm, a plurality of electric cores 2 are arranged on a bottom plate 3, and the distance between every two adjacent electric cores 2 is 6mm. When the battery pack works, the exhaust fan 10 is driven, wind enters from the air inlet 9, heat on the battery cells 2 is taken away when passing through the battery cells 2, the distance between the adjacent battery cells 2 is 6mm, the wind can normally pass through, the wind is prevented from being influenced by the excessive narrow effect, and finally the wind is discharged through the air outlet 8, so that the battery pack is cooled, the leakage risk caused by liquid cooling is avoided, and the effect of improving the safety is achieved.

Referring to fig. 1 and 3, the width of air intake 9 is 4mm, and when the air inlet, air intake 9 can filter the great impurity of granule when guaranteeing that wind gets into in the protection frame 1, reduces impurity entering protection frame 1, and a plurality of air intakes 9 carry out the air inlet simultaneously, can reduce wind and concentrate the entering, lets wind more even through a plurality of electric cores 2, reaches the even radiating effect that improves electric core 2.

Referring to fig. 1 and 2, the battery cells 2 in the present embodiment are combined into a lithium battery pack of 51.2v300ah by using standardized battery cells 2,3 and 16 strings, and the exhaust fan 10 selects a high-quality axial flow fan with ventilation rate of > 24CFM and power of > 14W.

The implementation principle of the embodiment is as follows: when the battery pack works, the exhaust fan 10 is driven, wind enters from the air inlet 9, heat on the battery cells 2 is taken away when passing through the battery cells 2, the distance between the adjacent battery cells 2 is 6mm, the wind can normally pass through, the wind is prevented from being influenced by the excessive narrow effect, and finally the wind is discharged through the air outlet 8, so that the battery pack is cooled, the leakage risk caused by liquid cooling is avoided, and the effect of improving the safety is achieved.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 an improve lithium cell group of security which characterized in that: including protection frame (1), electric core (2), air exhauster (10), fixed roof (11) and bottom plate (3) of being provided with on protection frame (1), electric core (2) set up on bottom plate (3), electric core (2) are located between roof (11) and bottom plate (3), air exhauster (10) are fixed to be set up on protection frame (1), air intake (9) have been seted up on the lateral wall of air exhauster (10) one side is kept away from to protection frame (1), electric core (2) are provided with a plurality ofly on bottom plate (3), adjacent two interval between electric core (2) is 6mm.

2. The improved safety lithium battery pack of claim 1, wherein: the air inlets (9) are arranged in a plurality.

3. The improved safety lithium battery pack according to claim 2, wherein: the width of the air inlet (9) is 4mm.

4. The improved safety lithium battery pack of claim 1, wherein: the battery cell is characterized in that a positioning plate (6) is arranged in the protection frame (1), a positioning groove (7) is formed in the positioning plate (6), and the upper end of the battery cell (2) is located in the positioning groove (7).

5. The improved safety lithium battery pack according to claim 4, wherein: the battery cell is characterized in that a placing plate (4) is arranged on the bottom plate (3), a stabilizing groove (5) is formed in the placing plate (4), and the lower end of the battery cell (2) is placed in the stabilizing groove (5).