CN218005007U - Battery pack liquid cooling heat abstractor and vehicle - Google Patents

Abstract

The utility model discloses a battery pack liquid cooling heat abstractor and vehicle, battery pack liquid cooling heat abstractor are used for cooling multirow electricity core and include end cold drawing and side cold drawing, and end cold drawing is used for accepting along being listed as to multirow electricity core of arranging in proper order, and the quantity of side cold drawing is less than the row number of electricity core, and each side of at least one side cold drawing all with one row of electricity core butt. The utility model provides a battery pack liquid cooling heat abstractor has simple structure, advantage that weight is low.

Description

Battery pack liquid cooling heat abstractor and vehicle

Technical Field

The utility model relates to a battery pack technical field, concretely relates to battery pack liquid cooling heat abstractor and vehicle.

Background

The battery pack refers to an assembled battery, i.e. a battery pack, formed by packaging, packaging and assembling a plurality of battery cells into a specific shape. In the related art, a plurality of battery cells are generally arranged in a row, and a plurality of side cooling plates distributed in a row direction are required to dissipate heat of the plurality of rows of battery cells, so that the liquid cooling heat dissipation device has a defect of heavy weight.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent.

Therefore, the embodiment of the utility model provides a battery pack liquid cooling heat abstractor, this battery pack liquid cooling heat abstractor have simple structure, advantage that weight is low.

The embodiment of the utility model provides a vehicle is still provided.

The battery pack liquid cooling heat dissipation device according to the embodiment of the utility model is used for cooling a plurality of rows of battery cores and comprises a bottom cooling plate and a side cooling plate, wherein the bottom cooling plate is used for receiving a plurality of rows of battery cores which are sequentially arranged along the row direction; the quantity of side cold drawing is less than the row number of electric core, at least one each side of side cold drawing all with one row the electric core butt.

According to the utility model discloses battery pack liquid cooling heat abstractor realizes the heat dissipation to two rows of electric cores simultaneously through setting up at least one side cold drawing, and this side cold drawing is pressed from both sides promptly and is established between two rows of electric cores, has effectively avoided the contact of side cold drawing and external environment, has improved the heat exchange efficiency of side cold drawing. Moreover, on the basis of ensuring the equal heat dissipation effect of each row of the battery cores, the number of the side cooling plates is less, and the weight is also less, so that the battery pack liquid cooling heat dissipation device is simple in structure and small in weight.

In some embodiments, when the number of rows of the battery cells is an even number, the number of the side cooling plates is 0.5 times of the number of rows of the battery cells, each side cooling plate corresponds to two rows of the battery cells arranged adjacently, and any one of the side cooling plates is sandwiched between the two rows of the battery cells corresponding to the side cooling plate.

In some embodiments, when the number of rows of the battery cells is odd, a side surface of one side cold plate located at an edge, which faces an adjacent side cold plate, abuts against one row of the battery cells located at the edge, each of the remaining side cold plates corresponds to two rows of the battery cells arranged adjacently, and each of the remaining side cold plates is sandwiched between the two rows of the battery cells corresponding to the remaining side cold plates.

In some embodiments, the number of the side cold plates is multiple, the side cold plates are distributed on the bottom cold plate at intervals along the column direction, the battery pack liquid cooling heat dissipation device further comprises a plurality of liquid cooling water pipes, and the bottom cold plate and the side cold plates are connected in series through the plurality of liquid cooling water pipes.

In some embodiments, the number of the side cold plates is multiple, the side cold plates are distributed on the bottom cold plate at intervals along the column direction, the battery pack liquid cooling heat dissipation device further includes a plurality of liquid cooling water pipes, the side cold plates are connected in parallel through part of the liquid cooling water pipes, and each of the side cold plates is connected in series with the bottom cold plate through the rest of the liquid cooling water pipes.

In some embodiments, the base-cold plate comprises an upper plate and a lower plate, the upper plate and the lower plate being joined, at least one of the upper plate and the lower plate forming a liquid-cooling flow passage, the upper plate and the lower plate both being made of a 5-series aluminum alloy.

In some embodiments, the electric core and the liquid cooling flow channel are arranged in a thickness direction of the bottom cooling plate.

In some embodiments, the upper plate is joined to the lower plate by a laser welding process;

alternatively, the upper plate and the lower plate are bonded.

In some embodiments, the number of the side cold plates is multiple, the side cold plates are distributed on the bottom cold plate at equal intervals along the column direction, and two rows of cells located between two adjacent side cold plates are spaced apart along the column direction.

According to the utility model discloses vehicle includes battery pack liquid cooling heat abstractor as above-mentioned any embodiment.

According to the utility model discloses the technical advantage of vehicle is the same with the battery pack liquid cooling heat abstractor's of above-mentioned embodiment technical advantage, and this is no longer described herein.

Drawings

Fig. 1 is a schematic diagram of a battery pack liquid-cooled heat dissipation device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a bottom cooling plate of a battery pack liquid cooling heat dissipation device according to an embodiment of the present invention.

Reference numerals are as follows:

100. a battery pack liquid cooling heat sink; 1. a bottom cold plate; 11. an upper plate; 12. a lower plate; 2. a side cooling plate; 3. liquid cooling water pipes; 4. a quick connector; 5. and (5) battery cores.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the correlation technique, the quantity of side cold plate is equal and the one-to-one with the row number of electric core 5, and a side cold plate only contacts with the laminating of corresponding one row of electric core 5 promptly to the realization is to this row of electric core 5's heat dissipation. This arrangement results in a greater overall weight of the battery pack liquid-cooled heat sink 100.

In order to solve the above-mentioned defects, a battery pack liquid-cooled heat sink 100 according to an embodiment of the present invention is described below with reference to fig. 1.

According to the utility model discloses battery pack liquid cooling heat abstractor 100 is used for cooling off multirow electricity core 5 and includes bottom cooling board 1 and side cooling board 2. The bottom cooling plate 1 is used for receiving a plurality of rows of battery cores 5 which are sequentially arranged along the column direction. Specifically, the side cooling plate 2 is perpendicular to the bottom cooling plate 1, the plurality of side cooling plates 2 are parallel to each other, and the plurality of side cooling plates 2 are connected and communicated with the bottom cooling plate 1.

The quantity of side cold plate 2 is less than the row number of electricity core 5, and each side of at least one side cold plate 2 all with one row of electricity core 5 butt. Namely, two side surfaces of at least one side cold plate 2 are respectively attached and contacted with two adjacent rows of electric cores 5.

According to the utility model discloses battery pack liquid cooling heat abstractor 100 realizes the heat dissipation to two rows of electric cores 5 simultaneously through setting up at least one side cold drawing 2, and this side cold drawing 2 is pressed from both sides and is established between two rows of electric cores 5 promptly, has effectively avoided the contact of side cold drawing 2 with external environment, has improved the heat exchange efficiency of side cold drawing 2. Moreover, on the basis of ensuring the same heat dissipation effect on each row of the battery cells 5, the number of the side cooling plates 2 is less, and the weight is also less, so that the battery pack liquid cooling heat dissipation device 100 is simple in structure and small in weight.

It should be noted that, compared to the side cooling plates in the related art, in the present embodiment, the thickness of the side cooling plate 2 capable of dissipating heat of two rows of battery cells 5 is greater than that of the side cooling plate in the related art, for example, may be 1.5 times to 2 times of the thickness of the side cooling plate in the related art, so that while heat dissipation of two rows of battery cells 5 is satisfied, the weight of the side cooling plate 2 in the present embodiment is always smaller than the sum of the weights of the two side cooling plates 2 in the related art.

For easy understanding, the direction that arrow a shows in fig. 1 is according to the embodiment of the utility model provides a row of battery pack liquid cooling heat abstractor 100 is to, and the direction that arrow B shows in fig. 1 is according to the embodiment of the utility model provides a row of battery pack liquid cooling heat abstractor 100 is to.

In some embodiments, when the number of rows of the battery cells 5 is an even number, the number of the side cooling plates 2 is 0.5 times of the number of rows of the battery cells 5, each side cooling plate 2 corresponds to two rows of the battery cells 5 arranged adjacently, and any one side cooling plate 2 is sandwiched between the two rows of the battery cells 5 corresponding to the side cooling plate.

Therefore, the number of the side cold plates 2 is minimized, and the weight reduction degree of the battery pack liquid-cooled heat dissipation device 100 is higher.

Specifically, as shown in fig. 1, taking the number of rows of the battery cells 5 as six rows as an example, the number of the side cooling plates 2 is three at this time, the six rows of the battery cells 5 are divided into three groups, and the two adjacent battery cells 5 in each group are respectively attached to and contacted with two side surfaces of the corresponding side cooling plate 2.

In some embodiments, when the number of rows of the battery cells 5 is odd, a side surface of one side cold plate 2 located at an edge, which faces an adjacent side cold plate 2, abuts against one row of the battery cells 5 located at the edge, each of the remaining side cold plates 2 corresponds to two rows of the battery cells 5 arranged adjacently, and each of the remaining side cold plates 2 is sandwiched between the two rows of the battery cells 5 corresponding to the remaining side cold plates.

Similarly, the number of the side cold plates 2 is the least, and the weight reduction degree of the battery pack liquid cooling heat dissipation device 100 is higher.

It should be noted that the side cooling plate 2 attached to and in contact with only one row of cells 5 may have the same structure as the side cooling plate 2 in the related art, thereby further reducing the total weight of the battery pack liquid-cooled heat dissipation device 100.

In some embodiments, as shown in fig. 1, the number of the side cold plates 2 is multiple, the multiple side cold plates 2 are distributed on the bottom cold plate 1 along the column direction at intervals, the battery pack liquid-cooled heat dissipating apparatus 100 further includes multiple liquid-cooled water pipes 3, and the bottom cold plate 1 and the multiple side cold plates 2 are connected in series through the multiple liquid-cooled water pipes 3.

The bottom cooling plate 1 and the side cooling plates 2 are sequentially connected, so that the battery pack liquid cooling heat dissipation device 100 only needs to be provided with one liquid inlet and one liquid outlet, the inflow and the outflow of cooling liquid can be realized, the liquid cooling water pipes 3 with more quantities (lengths) are effectively prevented from being used, and the total weight of the battery pack liquid cooling heat dissipation device 100 is further reduced.

Specifically, every side cold drawing 2 is equipped with first water injection well choke and second water injection well choke respectively at arranging to both ends, and the position of the adjacent side cold drawing 2 at arranging to both ends also is equipped with third water injection well choke and fourth water injection well choke on the bottom cold drawing 1 respectively, and 3 accessible quick connector 4 of liquid cooling water pipe peg graft with first water injection well choke, second water injection well choke, third water injection well choke and fourth water injection well choke to realize bottom cold drawing 1 and concatenating of a plurality of side cold drawing 2. Wherein, the liquid inlet and the liquid outlet are both arranged on the bottom cold plate 1.

The liquid cooling water pipe 3 is a metal water pipe, and when the side cooling plate 2 is communicated with the bottom cooling plate 1, the side cooling plate 2 is also installed and positioned on the bottom cooling plate 1 by the liquid cooling water pipe 3.

In some embodiments, the number of the side cold plates 2 is plural, the plural side cold plates 2 are distributed on the bottom cold plate 1 along the column direction at intervals, the battery pack liquid cooling heat dissipating device 100 further includes a plurality of liquid cooling water pipes 3, the plural side cold plates 2 are connected in parallel through part of the liquid cooling water pipes 3, and each of the plural side cold plates 2 is connected in series with the bottom cold plate 1 through the remaining liquid cooling water pipe 3.

Namely, the side cold plates 2 are firstly connected in parallel, and then the whole side cold plates are connected with the bottom cold plate 1 in series, so that the additional use of more liquid cooling water pipes 3 (with larger length) is effectively avoided, and the total weight of the battery pack liquid cooling heat dissipation device 100 is further reduced.

In some embodiments, the bottom cold plate 1 includes an upper plate 11 and a lower plate 12, the upper plate 11 and the lower plate 12 are connected, at least one of the upper plate 11 and the lower plate 12 forms a liquid cooling flow passage, and both the upper plate 11 and the lower plate 12 are made of a 5-series aluminum alloy.

Compared with the upper plate 11 and the lower plate 12 made of 3 series aluminum alloy in the related art, the upper plate 11 and the lower plate 12 made of aluminum magnesium alloy in the present embodiment have the advantages of low density and high strength, and the thickness of the upper plate 11 and the lower plate 12 can be designed to be thinner and the weight thereof is smaller on the basis of satisfying the structural strength, thereby further reducing the total weight of the battery pack liquid-cooled heat dissipating device 100.

Specifically, the number of the bottom cold plate 1 and the side cold plates 2 made of 5-series aluminum alloy is designed, the weight of the battery pack liquid cooling heat dissipation device 100 can be reduced by about 6kg, and the total weight is reduced by about 24%. The lower surface of the upper plate 11 is provided with an upper runner groove, the upper surface of the lower plate 12 is provided with a lower runner groove, and after the upper plate 11 is connected with the lower plate 12, the upper runner groove and the lower runner groove are buckled to form a liquid cooling runner.

The upper plate 11 and the lower plate 12 may be made of other high-strength aluminum alloy materials.

In some embodiments, the battery cell 5 and the liquid cooling flow channel are arranged in the thickness direction of the underfloor cooling plate 1. Namely, on the projection plane perpendicular to the bottom cooling plate 1, the projections of the multiple rows of battery cells 5 coincide with the projections of the liquid cooling flow channels. The multiple rows of electric cores 5 are positioned right above the liquid cooling flow channels, so that the heat dissipation efficiency of the bottom cooling plate 1 is further improved.

In some embodiments, as shown in fig. 2, the upper plate 11 is joined to the lower plate 12 by a laser welding process.

Compared with the press brazing process in the related art, the connection of the upper plate 11 and the lower plate 12 of the present embodiment does not require the use of a welding rod, thereby having an advantage of low connection cost.

In some embodiments, the upper plate 11 and the lower plate 12 are bonded.

Therefore, the connection between the upper plate 11 and the lower plate 12 is simple and convenient, and the sealing performance of the formed liquid cooling runner is ensured.

In some embodiments, the plurality of side cooling plates 2 are distributed at equal intervals along the column direction, and two rows of electric cores 5 located between two adjacent side cooling plates 2 are spaced apart in the column direction. Avoid two adjacent rows of electric cores 5 contacts from this, further improve electric core 5's radiating efficiency, simultaneously, some support piece can be put into between two spaced-apart rows of electric cores 5 to guarantee that electric core 5 stably laminates on the side of corresponding side cold plate 2.

The vehicle according to the embodiment of the present invention includes the battery pack liquid cooling heat sink 100 according to any of the above embodiments. Specifically, the vehicle is a new energy automobile, and the battery pack liquid-cooled heat dissipation device 100 is used for receiving a battery pack formed by a plurality of rows of battery cells 5, so as to realize a heat dissipation function of the battery pack.

According to the utility model discloses the technical advantage of vehicle is the same with the technical advantage of the battery pack liquid cooling heat abstractor 100 of above-mentioned embodiment, and this no longer gives details.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 of the present invention and to simplify the description, but do not indicate or imply that the device or element 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (10)

1. The utility model provides a battery pack liquid cooling heat abstractor for cool off multirow electricity core, its characterized in that includes:

the bottom cooling plate is used for receiving a plurality of rows of the battery cells which are sequentially arranged along the column direction; and

the number of side cold drawing is less than the row number of electric core, at least one each side of side cold drawing all with one row the electric core butt.

2. The liquid-cooled heat dissipation device for battery pack according to claim 1, wherein when the number of rows of the electric cores is even, the number of the side cold plates is 0.5 times of the number of rows of the electric cores, each side cold plate corresponds to two rows of the electric cores arranged adjacently, and any one side cold plate is clamped between the two rows of the electric cores corresponding to the side cold plate.

3. The battery pack liquid-cooled heat dissipation device of claim 1, wherein when the number of the rows of the battery cells is odd, a side surface of one side cold plate located at an edge, which faces to an adjacent side cold plate, abuts against one row of the battery cells located at the edge, each of the other side cold plates corresponds to two rows of the battery cells arranged adjacently, and each of the other side cold plates is sandwiched between the two rows of the battery cells corresponding to the other side cold plates.

4. The battery pack liquid-cooled heat dissipation device as recited in claim 1, wherein the number of the side cold plates is multiple, the multiple side cold plates are distributed on the bottom cold plate at intervals along the column direction, the battery pack liquid-cooled heat dissipation device further comprises multiple liquid-cooled water pipes, and the bottom cold plate and the multiple side cold plates are connected in series through the multiple liquid-cooled water pipes.

5. The battery pack liquid-cooled heat dissipation device according to claim 1, wherein the number of the side cold plates is plural, the plural side cold plates are distributed on the bottom cold plate at intervals along the column direction, the battery pack liquid-cooled heat dissipation device further comprises a plurality of liquid-cooled water pipes, the plural side cold plates are connected in parallel through part of the liquid-cooled water pipes, and each of the plural side cold plates is connected in series with the bottom cold plate through the remaining liquid-cooled water pipes.

6. The liquid-cooled heat sink for battery pack of claim 1, wherein the bottom cold plate comprises an upper plate and a lower plate, the upper plate and the lower plate being connected, at least one of the upper plate and the lower plate forming a liquid-cooled flow channel, the upper plate and the lower plate being made of 5-series aluminum alloy.

7. The liquid-cooled heat sink for battery pack according to claim 6, wherein the electric core and the liquid-cooled flow channel are arranged in a thickness direction of the bottom cooling plate.

8. The battery pack liquid-cooled heat sink of claim 6, wherein the upper plate is joined to the lower plate by a laser welding process;

alternatively, the upper plate and the lower plate are bonded.

9. The battery pack liquid-cooled heat dissipation device of claim 2 or 3, wherein the number of the side cold plates is multiple, the multiple side cold plates are distributed on the bottom cold plate at equal intervals along the column direction, and two rows of electric cores located between two adjacent side cold plates are spaced apart in the column direction.

10. A vehicle comprising a battery pack liquid-cooled heat sink as claimed in any one of claims 1 to 9.

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