CN217086709U

CN217086709U - Battery cooling system

Info

Publication number: CN217086709U
Application number: CN202220870534.XU
Authority: CN
Inventors: 周赛洪; 徐红宝
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-07-29
Anticipated expiration: 2032-04-14

Abstract

The utility model provides a battery cooling system, include: electric core and bottom plate, the both ends that the bottom plate is relative are along the direction of perpendicular to bottom plate surface and towards same side arch, form two end plates, the inboard of end plate and bottom plate is hollow structure and communicates each other, and inlet and liquid outlet have been seted up on the surface of bottom plate, and inlet and liquid outlet all communicate each other with the inboard cavity of bottom plate, the embedding of electric core is installed between two end plates, and one side that end plate and bottom plate are close to electric core is pasted tightly with electric core surface. The utility model discloses a battery cooling system can provide better cooling effect for electric core, can also provide good installation performance simultaneously.

Description

Battery cooling system

Technical Field

The utility model discloses power battery safety technical field especially relates to a battery cooling system.

Background

At present, power batteries have the characteristics of high capacity, high voltage and the like, so the power batteries are accompanied by certain safety risks, particularly, when the power batteries are charged and discharged at high rate, the batteries are easy to generate more heat, if the generated heat cannot be taken away in time, the temperature of the batteries can be continuously increased, and further, the risk of fire and explosion caused by thermal runaway is possibly generated. In order to avoid this problem, the battery needs to be cooled down in time.

However, the existing cooling system generally cools the bottom surface of the power battery, the cooling and heat dissipation area is relatively small, and the cooling effect of other positions is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can improve cooling heat radiating area, improve cooling efficiency's battery cooling system.

The technical scheme of the utility model is realized like this: the utility model provides a battery cooling system, including electric core and bottom plate, the both ends that the bottom plate is relative are along the direction of perpendicular to bottom plate surface and towards protruding with one side, form two end plates, the inboard of end plate and bottom plate is hollow structure and communicates each other, and inlet and liquid outlet have been seted up on the surface of bottom plate, and inlet and liquid outlet all communicate each other with the inboard cavity of bottom plate, the embedding of electricity core is installed between two end plates, and one side that end plate and bottom plate are close to electric core is pasted tightly with electric core surface.

On the basis of the technical scheme, the steel plate structure is preferable to further comprise fastening bolts, through holes are formed in the end plates in the direction perpendicular to the plane where the bottom plate is located, the inner walls of the through holes are connected and continuous with the outer walls of the end plates, and the fastening bolts penetrate through the through holes and are embedded into the through holes.

On the basis of the technical scheme, the binding belt is preferably further included, and the binding belt is wound on the outer sides of the two end plates and tightly attached to the surface of one side, located at the end part of the bottom plate, of the end plate.

On the basis of the technical scheme, preferably, the number of the straps is at least two, and the straps are arrayed along the height direction of the end plate.

On the basis of the technical scheme, the connecting device is preferable and further comprises a connecting interface, the position, located between the two end plates, of the bottom plate is disconnected to form a first bottom plate and a second bottom plate, the end portions, right opposite to the first bottom plate and the second bottom plate, of the first bottom plate and the second bottom plate are respectively provided with a first opening and a second opening, and the connecting interface is communicated with the first opening and the second opening.

On the basis of the above technical solution, preferably, the connection interface is made of an elastic material.

On the basis of the above technical solution, preferably, the connection interface is made of rubber.

The utility model discloses following beneficial effect has for prior art:

(1) the utility model discloses a battery cooling system adopts the bottom plate structure that has two end plates to carry out centre gripping fixed to electric core, and on the one hand, this structure can increase the area of contact with electric core to bring better technological effect for cooling, and on the other hand this structure forms the half-surrounded centre gripping state to electric core, and is better to the fixed effect of electric core;

(2) the utility model also provides a through hole in the end plate, so as to embed the fastening bolt, and the fastening bolt can be used to realize the fixed installation of the bottom plate, thereby achieving the purpose of fixed installation of the electric core;

(3) the utility model has the advantages that in order to achieve better contact cooling effect on the battery cell, the connection effect between the battery cell and the bottom plate is better and stable, the binding belt is adopted for binding, the fixing mode is simple and effective, and the cost is low;

(4) the utility model discloses still set the bottom plate to two structures that can splice alone, utilize connection interface to communicate two independent parts, because electric core is after the ribbon is tied up in the embedding installation, there may be the gap between electric core and end plate, adopt the mode of concatenation, can adapt to the not electric core of equidimension through the size of adjusting connection structure, thereby guarantee in close contact with between end plate and the electric core, reach good heat transfer effect, secondly, as another kind of preferred embodiment, size deformation when tying up in order to adapt to the ribbon, change the material of connection interface into the elasticity material, thereby can adapt to the deformation volume.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of the battery cooling system of the present invention;

fig. 2 is a cross-sectional view of the battery cooling system of the present invention;

FIG. 3 is a cross-sectional view of a bottom plate portion of the battery cooling system of the present invention;

fig. 4 is an exploded view of fig. 3.

In the figure: 1-battery core, 2-bottom plate, 3-fastening bolt, 4-ribbon, 5-connecting interface, 21-end plate, 22-liquid inlet, 23-liquid outlet, 24-through hole, 25-first bottom plate, 26-second bottom plate, 251-first opening and 261-second opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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 efforts all belong to the protection scope of the present invention.

As shown in fig. 1, in conjunction with fig. 2 and 3, the battery cooling system of the present invention includes a battery cell 1, the battery cell 1 being one or more electricity storage units, the battery cell is arranged according to a certain rule, and further comprises a bottom plate 2, wherein the bottom plate 2 is used for fixing and cooling the battery cell, specifically, two end plates 21 are formed by extending two opposite end portions of the bottom plate 2 along a direction perpendicular to the surface of the bottom plate 2, the extending directions of the two end plates 21 are the same, the two end plates 21 and the bottom plate 2 form a concave structure, the battery cell 1 is embedded between the two end plates 21, and both the bottom plate 2 and the end plates 21 are of a hollow structure, and both inside cavities all communicate each other, and inlet 22 and liquid outlet 23 have been seted up on the surface of bottom plate 2, and inlet 22 and liquid outlet 23 all communicate each other with the cavity in the bottom plate 2, and when electric core 1 imbeds between two end plates 21, electric core 1 pastes closely each other with the surface of end plate 21 and bottom plate 2 respectively.

In the above embodiment, 2 inside packing cooling medium of bottom plate of half surrounding structure to can realize carrying out cooling to the surface of the electric core 1 that is wrapped up, cooling's area is bigger, and two end plates 21 can carry out the centre gripping to the electric core 1 that is wrapped up simultaneously, thereby improve electric core 1's mounting structure stability.

In the above embodiment, it is preferable that the liquid inlet 22 and the liquid outlet 23 are also provided on the same or different end plate 21, and it is further preferable that the liquid outlet 22 is provided near the top of the end plate 21.

In the specific embodiment, the fastening bolt 3 is further included, the end plate 21 is provided with a through hole 24 along a direction perpendicular to the plane of the bottom plate 2, and the inner wall of the through hole 24 is connected with the outer wall of the end plate 21 and is continuously and tightly sealed, so that the through hole 24 is not communicated with the hollow cavity in the end plate 21, and the fastening bolt 3 is inserted into the through hole 24 in a penetrating manner.

In the above embodiment, the electric core 1 is fixed on the bottom plate 2, and then the bottom plate 2 is fixed, so as to achieve the purpose of fixing the electric core 1, specifically, the bottom plate 2 is provided with the through hole 24 on the end plate 21, and is fixedly mounted with the external fixing surface by using the fastening bolt to penetrate through, because the thickness of the bottom plate 2 along the direction perpendicular to the plane thereof may be relatively thin, the fixing and mounting effect is not constant, and the end plate 21 is adopted, on one hand, the contact area between the fastening bolt 3 and the end plate 21 is increased, the stress area is increased, the stability is better, secondly, the end plate 21 needs to be mutually supported with the electric core 1, when the reverse acting force generated by the electric core 1 acts on the end plate 21, the stress between the end plate 21 and the bottom plate 2 is larger, which is not beneficial to the connection stability between the bottom plate 2 and the end plate 21, at this time, the fastening bolt 3 can play a supporting role for the end plate 21, thereby reducing the effect of stress concentrations at the junction of the base plate 2 and the end plate 21.

In the specific embodiment, the binding belt 4 is further included, the binding belt 4 surrounds the outer sides of the two end plates 21, and the surface of the end plate 21 on the end side of the bottom plate 2 is tightly attached.

In the above embodiment, the ribbon 4 is mainly used for locking and fixing the end plate 21 and the electric core 1 clamped therein, and secondly, the tightening process of the ribbon 4 is favorable for improving the contact effect between the end plate 21 and the electric core 1, so as to improve the cooling effect.

In the specific embodiment, the number of the bands 4 is not less than two, and the plurality of bands 4 are arrayed along the height direction of the end plate 21, namely, the height direction of the end plate 21 is along the direction perpendicular to the plane of the bottom plate 2.

In the above embodiment, the plurality of straps 4 can make the end plate 21 uniformly stressed at different positions in the height direction thereof.

As shown in fig. 4, in the specific embodiment, a connection interface 5 is further included, the bottom plate 2 is disposed in a disconnected position between the two end plates 21, so as to form a first bottom plate 25 and a second bottom plate 26, the first bottom plate 25 and the second bottom plate 26 are respectively opened with a first opening 251 and a second opening 261 at the disconnected position, and the connection interface 5 is communicated with the first opening 251 and the second opening 261.

In the above embodiment, the connection interface 5 is a tubular structure, and is communicated with the first bottom plate 25 and the second bottom plate 26 by embedding the end portion in the first opening 251 or the second opening 261, and by replacing the connection interfaces 5 with different sizes, the connection interface can be adapted to the embedded installation of the battery cells 1 with different sizes, so as to ensure that the surface of the end plate 21 abuts against the surface of the battery cells 1.

In a specific embodiment, the connection interface 5 is made of an elastic material.

In the above embodiment, after electric core 1 is embedded between two end plates 21, in order to further improve the contact effect between end plate 21 and the electric core, ribbon 4 is still needed to be used for bundling, and when the ribbon is bundled, to the clearance between electric core 1 and end plate 21, the end plate 21 is needed to have the allowance of certain elastic deformation to carry out the driving fit better, if this elastic deformation allowance task shifts to connection interface 5, then to the stability and the security of other structures, can play better protection effect.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cooling system, comprising an electric core (1), characterized by further comprising: bottom plate (2), bottom plate (2) relative both ends are along the direction on perpendicular to bottom plate (2) surface and towards same side arch, form two end plates (21), the inboard of end plate (21) and bottom plate (2) is hollow structure and communicates each other, and inlet (22) and liquid outlet (23) have been seted up on the surface of bottom plate (2), and inlet (22) and liquid outlet (23) all communicate each other with the inboard cavity of bottom plate (2), electric core (1) embedding is installed between two end plates (21), and one side that end plate (21) and bottom plate (2) are close to electric core (1) is pasted tightly with electric core (1) surface.

2. The battery cooling system according to claim 1, further comprising a fastening bolt (3), wherein the end plate (21) is provided with a through hole (24) along a direction perpendicular to the plane of the bottom plate (2), the inner wall of the through hole (24) is connected and continuous with the outer wall of the end plate (21), and the fastening bolt (3) is inserted into the through hole (24) in a penetrating manner.

3. A battery cooling system according to claim 1, characterised in that it further comprises a band (4), said band (4) being wrapped around the outside of the two end plates (21) and abutting against the surface of the end plate (21) on the side of the end of the base plate (2).

4. A battery cooling system according to claim 3, characterized in that the number of said bands (4) is at least two, and a plurality of bands (4) are arranged in an array in the height direction of the end plate (21).

5. The battery cooling system according to claim 1, further comprising a connection interface (5), wherein the base plate (2) is disconnected at a position between the two end plates (21) to form a first base plate (25) and a second base plate (26), opposite ends of the first base plate (25) and the second base plate (26) are respectively provided with a first opening (251) and a second opening (261), and the connection interface (5) communicates the first opening (251) and the second opening (261).

6. The battery cooling system according to claim 5, wherein the connection interface (5) is made of an elastic material.