CN219329348U

CN219329348U - Immersed cooling battery module

Info

Publication number: CN219329348U
Application number: CN202223256448.9U
Authority: CN
Inventors: 杨帅; 熊栋; 叶国强; 宋金庄
Original assignee: Ningbo Xintai Machinery Co Ltd
Current assignee: Ningbo Xintai Machinery Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-07-11
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a submerged cooling battery module, which comprises: a lower case; the upper cover is connected with the lower shell, and a sealing cavity for accommodating a plurality of battery cell monomers is arranged between the lower shell and the upper cover; the mounting plate is arranged in the sealing cavity and connected with the lower shell, and is provided with a plurality of first through holes and a plurality of first mounting holes for mounting the battery cell monomers; the liquid outlet and the liquid inlet are arranged on the lower shell and/or the upper cover, and the liquid inlet is used for introducing insulating cooling liquid into the sealing cavity. According to the utility model, the mounting plate is arranged to fix the battery cell monomer, so that the original scheme of fixing the battery cell monomer by filling pouring sealant is replaced; and the battery cell monomer is completely soaked in the insulating cooling liquid, so that better heat dissipation effect and flame retardant effect compared with pouring sealant are realized.

Description

Immersed cooling battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a submerged cooling battery module.

Background

With the rapid development of new energy automobiles, the application of power batteries is wider, but a series of problems to be solved urgently are faced, such as reduced service life, reduced reliability and safety, and danger caused by thermal runaway due to battery heating.

However, in the existing battery module, a plurality of battery cells are generally installed on a tray, the tray is installed in a shell, and then a serpentine cooling pipe is arranged on the periphery of each battery cell so as to play a role in heat dissipation; or filling pouring sealant between the battery core monomers to play roles of flame retardance and heat dissipation.

The patent application document with publication number of CN110767855A, entitled "a battery module for preventing heat spreading and a method for manufacturing the same", includes: the battery cell support and the battery cell of fixing on the battery cell support, the centre of the top of battery cell is protruding for explosion-proof valve, explosion-proof valve is anodal region, and the top edge of battery cell, side, bottom surface are negative pole region, and the explosion-proof valve of all battery cells is whole up setting, and the bottom of battery cell is connected with high fire-retardant engineering plastic sheet, is equipped with module bottom encapsulating hole on the high fire-retardant engineering plastic sheet, and through module bottom encapsulating hole pouring into thermal-insulated pouring sealant, thermal-insulated pouring sealant wraps up every battery cell completely, under thermal-insulated pouring sealant's separation, adjacent battery cell contactless.

In the scheme, through filling the pouring sealant between a plurality of electric cores, can play the effect of firm electric core, have good flame retardant action simultaneously, but the radiating effect is not good, if can not dispel the heat in time, still there is danger after electric core monomer thermal runaway.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems of providing a submerged cooling battery module which is used for solving the problems of poor heat dissipation effect and the like of a battery in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is a submerged cooling battery module, comprising:

a lower case;

the upper cover is connected with the lower shell, and a sealing cavity for accommodating a plurality of battery cell monomers is arranged between the lower shell and the upper cover;

the mounting plate is arranged in the sealing cavity and connected with the lower shell, and is provided with a plurality of first through holes and a plurality of first mounting holes for mounting the battery cell monomers;

the liquid outlet and the liquid inlet are arranged on the lower shell and/or the upper cover, and the liquid inlet is used for introducing insulating cooling liquid into the sealing cavity.

Further, a plurality of first through holes are uniformly arranged on the peripheral side of each of the first mounting holes.

Further, six first through holes are uniformly arranged on the peripheral side of each first mounting hole, and two first through holes are shared between any two adjacent first mounting holes.

Further, five first through holes are distributed on the periphery of the first mounting hole at the edge of the mounting plate.

Further, the mounting plate is provided with a plurality of rows of first mounting hole groups along the width direction, and each row of first mounting hole groups comprises a plurality of first mounting holes which are arranged along the length direction of the mounting plate.

Further, in any two adjacent first mounting hole groups, the positions of the first mounting holes in one first mounting hole group are staggered with the positions of the first mounting holes in the other first mounting hole group one by one.

Further, the lower surface of the upper cover protrudes downwards to form a plurality of protruding strips, and each protruding strip is respectively abutted to the upper end faces of all the first mounting holes in one first mounting hole group.

Further, a cooling channel for flowing insulating cooling liquid is formed between any two adjacent convex strips on the lower surface of the upper cover.

Further, the liquid outlet and the liquid inlet are both arranged on the lower shell and are communicated with the sealing cavity.

Further, a tray is further arranged between the mounting plate and the lower shell, a plurality of second mounting holes and a plurality of second through holes are formed in the tray, the second mounting holes are in one-to-one correspondence with the first mounting holes in number and positions, and the second through holes are in one-to-one correspondence with the first through holes in number and positions.

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

(1) The battery cell monomer is fixed by arranging the mounting plate so as to replace the original scheme of fixing the battery cell monomer by filling pouring sealant; and the battery cell monomer is completely soaked in the insulating cooling liquid, so that better heat dissipation effect and flame retardant effect compared with pouring sealant are realized.

(2) Set up the sand grip butt in the up end of first mounting hole, improve the stability that the battery cell monomer was installed on the mounting panel, can avoid leading to the battery cell monomer to appear becoming flexible because of not filling the pouring sealant.

(3) A cooling channel for the circulation of insulating cooling liquid is formed between any two adjacent convex strips, so that the insulating cooling liquid can circulate better in the sealing cavity, and the heat dissipation effect of the insulating cooling liquid is further enhanced.

Drawings

Fig. 1 is a schematic view of a battery module according to an embodiment;

fig. 2 is a top view of a battery module according to an embodiment;

FIG. 3 is a cross-sectional view at A-A in FIG. 2;

FIG. 4 is a cross-sectional view at B-B in FIG. 2;

fig. 5 is an exploded view of the battery module according to the embodiment;

FIG. 6 is a schematic view of the structure of a mounting plate in an embodiment;

FIG. 7 is a schematic view of a tray in an embodiment;

in the figure:

100. an upper cover; 110. a cooling channel;

200. a cell unit;

300. a mounting plate; 310. a first mounting hole; 320. a first through hole;

400. a tray; 410. a second mounting hole; 420. a second through hole;

500. a lower case; 510. a liquid inlet; 520. and a liquid outlet.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Referring to fig. 1-7, the present utility model discloses a submerged cooling battery module, comprising:

a lower case 500;

an upper cover 100 connected with the lower case 500, and a sealing cavity for accommodating the plurality of battery cells 200 is provided between the lower case 500 and the upper cover 100;

the mounting plate 300 is arranged in the sealed cavity and connected with the lower shell 500, and a plurality of first through holes 320 and a plurality of first mounting holes 310 for mounting the battery cell 200 are arranged on the mounting plate 300;

the liquid outlet 520 and the liquid inlet 510 are disposed on the lower shell 500 and/or the upper cover 100, and the liquid inlet 510 is used for introducing insulating cooling liquid into the sealed cavity.

Specifically, the mounting plate 300 is used for mounting a plurality of battery cell monomers 200, and insulating cooling liquid is continuously introduced into the sealing cavity, so that all battery cell monomers 200 are completely soaked in the insulating cooling liquid, heat released by the battery cell monomers 200 is transferred to the insulating cooling liquid, and the insulating cooling liquid flows out from the liquid outlet 520, so that a liquid cooling loop capable of completely soaking all battery cell monomers 200 is formed.

In this embodiment, the mounting plate 300 is provided to fix the battery cell 200, so as to replace the original scheme of fixing the battery cell 200 by filling pouring sealant; and the battery cell unit 200 is completely soaked in the insulating cooling liquid, so that better heat dissipation effect and flame retardant effect compared with pouring sealant are realized.

Further, a plurality of first through holes 320 are uniformly arranged at the circumferential side of each of the first mounting holes 310.

Specifically, the mounting plate 300 separates the sealed cavity into an upper layer and a lower layer, and is provided with a plurality of first through holes 320, so that the insulating cooling liquid can pass through the first through holes 320, and the upper layer and the lower layer are provided with the circulating insulating cooling liquid, so that the battery cell unit 200 is completely soaked in the insulating cooling liquid, and a better heat dissipation effect and a better flame retardant effect are realized.

Further, six first through holes 320 are uniformly arranged on the circumferential side of each first mounting hole 310, and two first through holes 320 are shared between any adjacent two first mounting holes 310.

Specifically explained is: 6 first through holes 320 are formed on the peripheral side of each first mounting hole 310, and 12 first through holes 320 are distributed on the peripheral sides of two first mounting holes 310; since there are two common first through holes 320, the two common first through holes 320 are located at the peripheral sides of the two first mounting holes 310 at the same time. Accordingly, 10 first through holes 320 are arranged at the circumferential sides of two adjacent first mounting holes 310. With this, under the condition of ensuring good heat dissipation effect, the layout of the first through holes 320 and the first mounting holes 310 is more reasonable, and more first mounting holes 310 are formed in the limited area of the mounting plate 300, so that more battery cells 200 are mounted.

Further, five of the first through holes 320 are disposed at the circumferential side of the first mounting hole 310 at the edge of the mounting plate 300.

Specifically, the first through hole 320 on the outer side of the first mounting hole 310 at the edge is eliminated, and the mounting plate 300 is prevented from being increased in length and width by providing only the first through hole 320 on the outermost side of the mounting plate 300. Thus, the area utilization of the mounting plate 300 can be further enhanced.

Further, the mounting plate 300 is provided with a plurality of rows of first mounting holes 310 along a width direction thereof, and each row of first mounting holes 310 includes a plurality of first mounting holes 310 arranged along a length direction of the mounting plate 300.

Further, in any two adjacent first mounting hole 310 groups, the positions of the first mounting holes 310 in one first mounting hole 310 group are staggered with the positions of the first mounting holes 310 in the other first mounting hole 310 group.

Specifically, the battery cell 200 used in the present embodiment is a cylindrical unit, so that the first mounting holes 310 are also configured as round holes, and the positions of the first mounting holes 310 in the two mounting hole groups are staggered, so that the area utilization rate of the mounting plate 300 can be further improved.

Further, the lower surface of the upper cover 100 protrudes downward to form a plurality of protruding strips, and each protruding strip abuts against the upper end surfaces of all the first mounting holes 310 in one of the first mounting holes 310 set.

The convex strips are arranged to be abutted against the upper end face of the first mounting hole 310, so that the stability of the mounting of the battery cell 200 on the mounting plate 300 is improved, and the battery cell 200 can be prevented from loosening due to the fact that pouring sealant is not filled.

Further, a cooling channel 110 for flowing the insulating cooling liquid is formed between any two adjacent protruding strips on the lower surface of the upper cover 100.

It can be appreciated that, since the lower surface of the upper cover 100 protrudes downward to form a protruding strip, a groove must be formed between the two protruding strips, and the groove can be used for flowing the insulating coolant, so that the insulating coolant can better flow in the sealed cavity, and further, the heat dissipation effect of the insulating coolant is enhanced.

Further, the liquid outlet 520 and the liquid inlet 510 are both disposed on the lower case 500 and are communicated with the sealing cavity.

Further, the liquid outlet 520 and the liquid inlet 510 are disposed on the lower shell 500 along the length direction of the upper cover 100, so that the flowing direction of the insulating cooling liquid in the cooling channel 110 is parallel to the arrangement direction of the liquid outlet 520 and the liquid inlet 510, and the insulating cooling liquid in the cooling channel 110 can flow out rapidly, thereby realizing faster heat dissipation.

Further, a tray 400 is further disposed between the mounting plate 300 and the lower case 500, and a plurality of second mounting holes 410 and a plurality of second through holes 420 are disposed on the tray 400, wherein the second mounting holes 410 are in one-to-one correspondence with the number and positions of the first mounting holes 310, and the second through holes 420 are in one-to-one correspondence with the number and positions of the first through holes 320.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims

1. An immersion-cooled battery module, comprising:

a lower case;

2. The immersion-type cooling battery module according to claim 1, wherein a plurality of first through holes are uniformly arranged on a peripheral side of each of the first mounting holes.

3. The submerged cooling battery module of claim 2, wherein six first through holes are uniformly arranged on the peripheral side of each of the first mounting holes, and two first through holes are shared between any adjacent two of the first mounting holes.

4. The submerged cooling battery module of claim 2, wherein five of the first through holes are arranged on the peripheral side of the first mounting hole at the edge of the mounting plate.

5. The submerged cooling battery module of claim 1, wherein the mounting plate is provided with a plurality of rows of first mounting hole groups arranged in the width direction thereof, each row of the first mounting hole groups including a plurality of the first mounting holes arranged in the length direction of the mounting plate.

6. The submerged cooling battery module of claim 5, wherein in any two adjacent first mounting hole groups, the positions of the first mounting holes in one of the first mounting hole groups are staggered one by one with the positions of the first mounting holes in the other first mounting hole group.

7. The submerged cooling battery module of claim 5, wherein the lower surface of the upper cover is convex downward to form a plurality of convex strips, and each convex strip is respectively abutted against the upper end surfaces of all the first mounting holes in one of the first mounting hole groups.

8. The submerged cooling battery module of claim 7, wherein the lower surface of the upper cover forms a cooling channel between any two adjacent beads through which the insulating coolant flows.

9. The submerged cooling battery module of claim 1, wherein the liquid outlet and the liquid inlet are both arranged on the lower case and communicate with the sealed cavity.

10. The submerged cooling battery module of claim 1, wherein a tray is further arranged between the mounting plate and the lower case, a plurality of second mounting holes and a plurality of second through holes are arranged on the tray, the second mounting holes are in one-to-one correspondence with the number and the positions of the first mounting holes, and the second through holes are in one-to-one correspondence with the number and the positions of the first through holes.