CN219642934U - Cold plate structure, battery pack and vehicle - Google Patents

Abstract

The utility model relates to a cold plate structure, battery package and vehicle, this cold plate structure includes plate body and runner, the plate body has along the first end that the first direction is relative and second end and be located the reposition of redundant personnel region of first end and be located the confluence region of second end, the plate body has inlet and liquid outlet, the runner sets up on the plate body and is used for supplying cooling liquid to flow, the runner includes cooling runner, the cooling runner includes the first runner section that is located the reposition of redundant personnel region, be located the reposition of redundant personnel region and the third runner section that is located the confluence region, in the reposition of redundant personnel region, first runner section reposition of redundant personnel is in order to communicate with a plurality of second runner sections, in the confluence region, a plurality of second runner sections are in order to communicate with the third runner section, first runner section communicates in the inlet, third runner section communicates in the liquid outlet, in order to realize carrying out even cooling to the piece that generates heat, reduce the influence of uneven temperature that causes the group battery because of the reposition of redundant personnel region.

Description

Cold plate structure, battery pack and vehicle

Technical Field

The disclosure relates to the technical field of new energy vehicles, in particular to a cold plate structure, a battery pack and a vehicle.

Background

The related art discloses a liquid cooling board and energy memory, this liquid cooling board is through locating two openings of inlet and liquid outlet U-shaped cooling pipeline and being located the same one side of liquid cooling board body, has formed multiunit cooling channel through the reposition of redundant personnel in the U-shaped cooling pipeline simultaneously, like this, can realize the cooling to the different regional of piece that generates heat through above-mentioned liquid cooling board. In this scheme, the cooling area of the flow dividing area is reduced due to the relatively large interval between the flow passages of the flow dividing area caused by the flow dividing of the flow passages, and the heating area of the battery pack is mainly concentrated in the middle area, so that the cooling effect on the battery pack is easily reduced, and the temperature field temperature difference of the battery pack is large.

Disclosure of Invention

An object of the present disclosure is to provide a cold plate structure, a battery pack and a vehicle, so as to be capable of uniformly cooling, for example, a battery pack, and reducing an influence of a split area on temperature unevenness of the battery pack, so as to at least partially solve the above technical problems.

To achieve the above object, a first aspect of the present disclosure provides a cold plate structure, comprising: the plate body is provided with a first end, a second end, a diversion area and a converging area, wherein the first end and the second end are opposite along a first direction, the diversion area is positioned at the first end, the converging area is positioned at the second end, and the plate body is provided with a liquid inlet and a liquid outlet; and the flow channel is arranged on the plate body and used for cooling liquid to flow, the flow channel comprises a cooling flow channel, the cooling flow channel comprises a first flow channel section positioned in the flow distribution area, a plurality of second flow channel sections positioned between the flow distribution area and the flow converging area and a third flow channel section positioned in the flow converging area, the first flow channel section is split to be communicated with the second flow channel sections, the flow converging area is a plurality of second flow channel sections are converged to be communicated with the third flow channel sections, the first flow channel section is communicated with the liquid inlet, and the third flow channel section is communicated with the liquid outlet.

Optionally, the first runner section extends outwards along a second direction perpendicular to the first direction and splits into at least two fourth runner sections extending in the same direction, and the fourth runner section extends outwards along the second direction and splits into at least two second runner sections.

Optionally, a plurality of the second flow path segments extend side by side and in a serpentine shape.

Optionally, the number of cooling channels is two and symmetrically arranged about the first direction.

Optionally, the first end of the plate body has a connecting portion extending outwards along the first direction and centrally arranged with an edge of the first end, and the liquid inlet and the liquid outlet are disposed on the connecting portion.

Optionally, the flow channel further includes a first U-shaped flow channel section located at the first end and partially extending to the connection portion, the first U-shaped flow channel section includes two first branch flow channel sections symmetrical with respect to the first direction, and a first communication section communicated between the two first branch flow channel sections, the two first branch flow channel sections are respectively communicated with the two first flow channel sections, the liquid inlet is located at a middle position of the first communication section, and the liquid outlet is located between the two first branch flow channel sections.

Optionally, the flow channel further includes a second U-shaped flow channel section located between the two cooling flow channels, the second U-shaped flow channel section includes two second branch flow channel sections symmetrical with respect to the first direction, and a second communication section communicated between the two second branch flow channel sections, the two second branch flow channel sections are respectively communicated with the two third flow channel sections, and a central position of the second communication section is communicated with the liquid outlet through an extension flow channel section.

Optionally, the plate body includes a first plate body and a second plate body that are stacked and arranged, and a flow channel groove is formed in the first plate body so as to enclose the flow channel together with the second plate body.

The second aspect of the present disclosure also provides a battery pack, comprising: the tray is provided with two expansion beams at intervals; the battery pack is arranged on the tray and positioned between the two expansion beams; and the plate body of the cold plate structure is directly or indirectly attached to the battery pack, and the first end and the second end of the plate body are respectively connected with the two expansion beams.

Optionally, the battery pack includes a plurality of electric cores that arrange side by side along first direction, the electric core has two utmost point posts that are located respectively in the opposite both ends of electric core along the second direction, the plate body still has two utmost point post regions that are located respectively in the opposite both ends of plate body along the second direction, and is located two between the utmost point post regions, shunt area with between the battery pack and between the confluence area with between the battery pack all be provided with first structural adhesive layer, utmost point post region with be provided with the second structural adhesive layer between the battery pack, intermediate region with be provided with the third structural adhesive layer between the battery pack, the coefficient of heat conductivity of third structural adhesive layer is greater than the coefficient of heat conductivity of second structural adhesive layer, the coefficient of heat conductivity of second structural adhesive layer is greater than the coefficient of heat conductivity of first structural adhesive layer.

Optionally, the multiple battery cells are divided into two groups of battery cells arranged at intervals along the first direction, the two groups of battery cells are separated by a beam arranged on the tray, the plate body is connected with the beam, a fourth structural adhesive layer is arranged between the plate body and the beam and/or between the plate body and the expansion beam, and the thermal conductivity of the fourth structural adhesive layer is smaller than or equal to that of the first structural adhesive layer.

A third aspect of the present disclosure also provides a vehicle including the battery pack as described above.

Through above-mentioned technical scheme, the cold plate structure that this disclosure provided promptly, this cold plate structure is through setting up the reposition of redundant personnel region and the confluence region of cooling runner in the first end and the second end department of plate body, sets up the edge at the plate body promptly, can utilize effectively on the plate body to the holistic cooling effect influence minimum region of cold plate structure, when guaranteeing the higher cooling effect of cold plate structure, has also realized the overall arrangement optimization to the last cooling runner of plate body. Meanwhile, as the plurality of second flow passage sections are arranged between the flow dividing region and the flow converging region, the cooling effect of the cold plate structure is effectively improved, and the influence of the flow dividing region on the temperature unevenness of the battery pack is reduced.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic structural view of a cold plate structure provided in an exemplary embodiment of the present disclosure;

FIG. 2 is an enlarged schematic view of a portion of the position A of FIG. 1;

FIG. 3 is a top view of a cold plate structure provided in an exemplary embodiment of the present disclosure;

fig. 4 is a top view of a portion of the structure of a battery pack provided in an exemplary embodiment of the present disclosure;

fig. 5 is an exploded schematic view of a part of the structure of a battery pack provided in an exemplary embodiment of the present disclosure;

fig. 6 is a schematic illustration of a glue applied between a cold plate structure and a battery pack provided in an exemplary embodiment of the present disclosure;

fig. 7 is a second arrangement of second flow path segments provided in an exemplary embodiment of the present disclosure in a serpentine extension.

Description of the reference numerals

1-a plate body; 110-a first end; 120-second end; 130-liquid inlet; 140-a liquid outlet; 150-a first plate body; 151-protrusions; 160-a second plate; a 2-split region; 3-confluence region; 4-flow channels; 410-cooling flow channels; 411-a first flow path segment; 412-a second flow path segment; 413-a third flow path segment; 414-a fourth runner section; 420-a first U-shaped runner section; 421-a first branch flow channel section; 422-a first communication section; 430-a second U-shaped runner section; 431-a second branch flow channel section; 432-a second communication section; 433-an extension flow path section; a 5-connection; 6-a tray; 7-expansion beams; 8-battery pack; 810-cell; 811-a battery cell; 820-pole; 9-post region; 10-middle region; 11-a first structural adhesive layer; 12-a second structural adhesive layer; 13-a third structural adhesive layer; 14-a cross beam; 15-a fourth structural adhesive layer; 16-locating pins; 17-positioning holes; 18-a first through hole; 19-a second through hole; 20-water supplementing block.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, "inner and outer" refers to inner and outer relative to the contour of the component or structure itself. In addition, it should be noted that terms such as "first, second", etc. are used to distinguish one element from another element without order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

According to a first aspect of the present disclosure, there is provided a cold plate structure, as shown with reference to fig. 1 to 6, the cold plate structure including a plate body 1 and a flow passage 4, the plate body 1 having first and second ends 110 and 120 opposite in a first direction, and a split region 2 at the first end 110 and a merging region 3 at the second end 120, the plate body 1 having a liquid inlet 130 and a liquid outlet 140, the flow passage 4 being provided on the plate body 1 and for flowing a cooling liquid, the flow passage 4 including a cooling flow passage 410, the cooling flow passage 410 including a first flow passage section 411 at the split region 2, a plurality of second flow passage sections 412 between the split region 2 and the merging region 3, and a third flow passage section 413 at the merging region 3, the first flow passage section 411 being split to communicate with the plurality of second flow passage sections 412, the first flow passage section 411 being communicated with the liquid inlet 130, the third flow passage section 413 being communicated with the liquid outlet 140.

Through above-mentioned technical scheme, the cold plate structure that this disclosure provided promptly, this cold plate structure is through setting up the reposition of redundant personnel area 2 and the confluence region 3 of cooling runner 410 in the first end 110 (foremost) and the second end 120 (rearmost) department of plate body 1, set up promptly in the edge of plate body 1, can utilize the holistic cooling effect influence minimum region of cold plate structure on the plate body 1 effectively, when guaranteeing the higher cooling effect of cold plate structure, also realized the overall arrangement optimization to cooling runner 410 on plate body 1. Meanwhile, as the plurality of second flow passage sections 412 are arranged between the flow dividing region 2 and the flow converging region 3, the cooling effect of the cold plate structure is effectively improved, and the influence of the flow dividing region 2 on the temperature non-uniformity of the battery pack is reduced.

It should be noted that, the splitting area 2 is an area at the edge of the first end 110 of the board body 1, for example, an approximate area where the first structural adhesive layer 11 located on the left side is located as shown in fig. 6, and specifically, the splitting area 2 may include an area where the first flow channel section 411 and the plurality of second flow channel sections 412 on the board body 1 are located at a communication position. The joining region 3 is a region at the edge of the second end 120 of the plate body 1, for example, an approximate region where the first structural adhesive layer 11 located on the right side is located as shown in fig. 6, and specifically, the joining region 3 may include a region where the plurality of second flow path segments 412 on the plate body 1 communicate with the third flow path segment 413. Therefore, by arranging the split-flow area 2 and the converging-flow area 3 at the edge of the plate body 1, the edge area with the smallest influence on the overall cooling effect of the cooling plate structure on the plate body 1 can be effectively utilized, and thus, when the plate body 1 of the cooling plate structure is attached to the battery pack 8 of a battery pack, for example, the main heating area (middle area) of the battery pack 8 is far away from the edge area, so that the layout optimization of the cooling flow channel 410 on the plate body 1 is realized while the cooling plate structure with higher cooling effect is ensured.

In addition, deionized water can be used as the cooling liquid, and other cooling liquids capable of achieving the cooling effect through heat exchange can be used, and the disclosure is not limited in particular. Further, the first direction may refer to the left-right direction of the drawing plane in fig. 3.

Because the cooling liquid flows through the U-shaped cooling pipeline to cool the battery pack, the flow stroke of the cooling liquid is longer, and thus the temperature difference between the inlet and the outlet of the cooling pipeline is relatively larger, so that in some embodiments, as shown in fig. 1 to 6, the number of the cooling channels 410 can be two and symmetrically arranged about the first direction, so that the cooling liquid in the cooling channels 410 can be uniformly distributed, thereby being beneficial to ensuring that the cooling plate structure uniformly cools and cools the heating element such as the battery pack of the battery pack, and due to the two symmetrically arranged cooling channels 410 and the plurality of second channel sections 412 contained in the cooling channels 410, the length of extension of each channel or channel section can be reduced, thereby reducing the temperature difference between the inlet and the outlet of each channel or channel section, further reducing the influence of temperature non-uniformity caused by the temperature difference between the inlet and the outlet of the cooling liquid, and effectively improving the cooling effect of the cooling plate structure.

In some embodiments, referring to fig. 1-6, the first channel segment 411 may extend outwardly in a second direction perpendicular to the first direction and split into at least two co-extending fourth channel segments 414, the fourth channel segments 414 extending outwardly in the second direction and split into at least two second channel segments 412, thereby enabling the first channel segment 411 of the cooling channel 410 to split and communicate with the plurality of second channel segments 412 within the splitting area 2.

As shown in fig. 3, the first flow channel section 411 extends outward along the second direction and splits into two fourth flow channel sections 414, and the two fourth flow channel sections 414 further split into two second flow channel sections 412, respectively. In addition, the second direction may refer to the up-down direction of the drawing plane in fig. 3.

Further, in some embodiments, referring to fig. 1 to 4, the plurality of second flow channel sections 412 may extend in a serpentine shape side by side, so as to make full use of the cooling area of the plate body 1, and ensure that the whole cold plate structure has a high cooling effect. The specific extending direction of the serpentine may be that the serpentine extends along the first direction and then extends along the second direction as shown in fig. 3, and then the serpentine goes around along the first direction, or of course, may also be that the serpentine extends along the second direction and then extends along the first direction as shown in fig. 7, and then the serpentine goes around along the second direction, which is not particularly limited herein, so that the cooling flow channel 410 can fully utilize the cooling area on the plate body 1, so as to ensure a higher cooling effect.

In some embodiments, referring to fig. 1 to 6, the first end 110 of the plate body 1 may have a connection portion 5 extending outward along a first direction and centrally disposed with an edge of the first end 110, the liquid inlet 130 and the liquid outlet 140 are disposed on the connection portion 5, and the liquid inlet 130 is located at a middle position of the connection portion 5, so as to provide cooling liquid into the cooling flow channel 410 through the liquid inlet 130 and the liquid outlet 140, and since the connection portion 5 is centrally disposed while the liquid inlet 130 is located at a middle position of the connection portion 5, the cooling liquid is injected into the cooling flow channel 410 through the liquid inlet 130 and equally distributed to two sides, so as to facilitate ensuring that the cooling plate structure uniformly cools heat generating components such as a battery pack.

Wherein the connection part 5 may be configured as a connection protrusion extending outwardly in the first direction and formed at the first end 110 of the plate body 1, the connection protrusion being located at a middle position of the first end 110 of the plate body 1, the structure being simple and easy to manufacture.

In addition, in some embodiments, referring to fig. 1 to 4, the flow channel 4 may further include a first U-shaped flow channel section 420 located at the first end 110 and partially extending to the connection portion 5, where the first U-shaped flow channel section 420 includes two first branch flow channel sections 421 symmetrical with respect to the first direction, and a first communication section 422 connected between the two first branch flow channel sections 421, the two first branch flow channel sections 421 are respectively connected to the two first flow channel sections 411, and the liquid inlet 130 is located at a middle position of the first communication section 422, so that the cooling liquid injected into the flow channel 4 through the liquid inlet 130 can be uniformly distributed to the cooling flow channels 410 symmetrically arranged at two sides, thereby ensuring a better cooling effect. The liquid outlets 140 are located between the two first branch flow channel sections 421, for example, may be arranged side by side as shown in fig. 3, and of course, may also be arranged in a staggered manner, which is not limited in this disclosure.

Further, in some embodiments, referring to fig. 1 to 4, the flow channel 4 may further include a second U-shaped flow channel section 430 located between the two cooling flow channels 410, the second U-shaped flow channel section 430 includes two second branch flow channel sections 431 symmetrical with respect to the first direction, and a second communication section 432 communicating between the two second branch flow channel sections 431, the two second branch flow channel sections 431 are respectively communicated with the two third flow channel sections 413, and a central position of the second communication section 432 is communicated with the liquid outlet 140 through the extending flow channel section 433, so that the cooling liquid discharged through the liquid outlet end of the third flow channel section 413 can flow back to the liquid outlet 140, further improving the uniformity of the distribution of the cooling liquid in the cooling flow channel, and improving the cooling effect.

In some embodiments, referring to fig. 1 and 2, the plate body 1 may include a first plate body 150 and a second plate body 160 that are stacked, where a flow channel groove is disposed on the first plate body 150 to enclose a flow channel 4 with the second plate body 160, so that the overall structure is relatively simple and easy to manufacture. The material of the plate body 1 may be a material with good heat conduction effect, such as an aluminum plate or a copper plate, and may be adaptively designed according to actual use requirements by those skilled in the art, which is not specifically limited in this disclosure. In addition, the outer surface of the first plate 150 facing away from the flow channel groove may be provided with a protrusion 151 corresponding to the position of the flow channel groove, and the extending direction of the protrusion 151 is substantially consistent with that of the flow channel groove, so as to increase the thickness of the flow channel groove at the first plate 150, and further increase the structural strength of the first plate 150.

According to a second aspect of the present disclosure, there is also provided a battery pack, as shown with reference to fig. 4 to 6, which includes a tray 6, a battery pack 8, and the above-mentioned cooling plate structure, two expansion beams 7 being provided on the tray 6 at intervals; the battery pack 8 is arranged on the tray and is positioned between the two expansion beams 7; the plate body 1 of the cold plate structure is directly or indirectly attached to the battery pack 8, and the first end 110 and the second end 120 of the plate body 1 are respectively connected to the two expansion beams 7. This battery package is through being provided with the cold plate structure on the lateral wall face that deviates from tray 6 of group battery 8, can realize carrying out even cooling to group battery 8 of battery package, reduces the inhomogeneous influence of temperature that the reposition of redundant personnel regional and business turn over liquid mouth difference in temperature led to the fact group battery 8, when guaranteeing the higher cooling effect of cold plate structure, can also improve group battery 8's life. In addition, the battery pack has all the beneficial effects of the above-mentioned cold plate structure, and this disclosure is not repeated here.

It should be noted that, through the research of the inventor, the temperature field distribution of the battery pack 8 shows the law of low temperature at the outer edge and high temperature at the center, so that the split area 2 and the converging area 3 of the cooling flow channel 410 of the cold plate structure of the disclosure are adaptively configured to be arranged at the first end 110 (foremost end) and the second end 120 (foremost end) of the plate body 1, that is, are arranged at the edge of the plate body 1, and the first end 110 and the second end 120 of the plate body 1 are respectively connected to the two expansion beams 7 at the edge of the battery pack 8, so that the area with the least influence on the overall cooling effect of the cold plate structure on the cold plate is effectively utilized, the cooling effect of the cold plate structure is ensured to be higher, and meanwhile, the battery pack 8 of the battery pack can be uniformly cooled, so that the service life of the battery pack is effectively prolonged.

In addition, because the edge of the battery pack 8 is close to the two expansion beams 7, the heat dissipation effect of the edge area of the battery pack 8 is good, and meanwhile, the safe and stable operation of the battery pack 8 can be ensured through the two expansion beams 7. Further, by connecting the first end 110 and the second end 120 of the plate body 1 to the two expansion beams 7, respectively, and disposing the split flow region 2 at the first end 110 and the merge flow region 3 at the second end 120, it is also possible to cause the two partial regions of the battery pack 8 corresponding to the split flow region 2 and the merge flow region 3 to dissipate heat by means of the two expansion beams 7, whereby the heat dissipation effect of the above-described two partial regions of the battery pack 8 is further enhanced by the expansion beams 7.

In some embodiments, referring to fig. 4 to 6, the battery pack 8 may include a plurality of battery cells 810 arranged side by side in the first direction, the battery cells 810 having two tab regions 820 respectively located at opposite ends of the battery cells 810 in the second direction, the plate body 1 further having two tab regions 9 respectively located at opposite ends of the plate body 1 in the second direction, and an intermediate region 10 located between the two tab regions 9, a first structural adhesive layer 11 being provided between the split region 2 and the battery pack 8 and between the merge region 3 and the battery pack 8, a second structural adhesive layer 12 being provided between the tab regions 9 and the battery pack 8, and a third structural adhesive layer 13 being provided between the intermediate region 10 and the battery pack 8, such that the cold plate structure is stably connected to the battery pack 8 through the structural adhesive layers. And, the coefficient of heat conductivity of third structure glue film 13 is greater than the coefficient of heat conductivity of second structure glue film 12, and the coefficient of heat conductivity of second structure glue film 12 is greater than the coefficient of heat conductivity of first structure glue film 11, like this, can make the cooling effect reach the optimization through the structure glue of different coefficient of heat conductivity, and use the use cost of structure glue also can be reduced to the structure glue of different coefficient of heat conductivity according to the demand condition in different regions.

In some embodiments, referring to fig. 4 to 6, the plurality of battery cells 810 may be divided into two groups of battery cells 811 arranged at intervals along the first direction, and the two groups of battery cells 811 are separated by the beam 14 disposed on the tray 6, thereby improving the safety of the battery pack as a whole. In addition, the plate body 1 is connected to the cross beam 14, and a fourth structural adhesive layer 15 is provided between the plate body 1 and the cross beam 14 and/or between the plate body 1 and the expansion beam 7, so as to further improve the stability of the cold plate structure connection. In addition, because the cooling requirement of the area is lower, the heat conductivity coefficient of the fourth structural adhesive layer 15 is smaller than or equal to that of the first structural adhesive layer 11, and the use cost is further reduced.

Further, in some embodiments, in order to better facilitate the connection of the first end 110 and the second end 120 of the plate body 1 of the cold plate structure to the two expansion beams 7, as shown in fig. 5, the top walls of the two expansion beams 7 may be further provided with positioning pins 16, and the first end 110 and the second end 120 of the plate body 1 may be correspondingly provided with positioning holes 17 through which the positioning pins 16 pass, so as to achieve the connection of the first end 110 and the second end 120 of the plate body 1 to the two expansion beams 7.

In addition, in some embodiments, referring to fig. 5, the plate body 1 may further be provided with a first through hole 18, so that a threaded fastener such as a bolt passes through the first through hole 18 to implement a mounting hole for connecting an upper cover (not shown) to the cross member 14. In addition, the first end 110 and the second end 120 of the plate body 1 may be further provided with second through holes 19, so that a threaded fastener such as a bolt passes through the second through holes 19 to realize a mounting hole for connecting the first end 110 and the second end 120 of the plate body 1 to the expansion beam 7, thereby further improving the stability of connection.

In some embodiments, referring to fig. 4 to 6, the outer wall surface of the expansion beam 7 may be provided with a water supplementing block 20, and the connection protrusion of the cold plate structure is covered on the water supplementing block 20, so that the cooling liquid inlet of the water supplementing block 20 is communicated with the liquid inlet 130 of the plate body 1, the cooling liquid outlet of the water supplementing block 20 is communicated with the liquid outlet 140 of the plate body 1, and further, the cooling liquid inlet and the cooling liquid outlet of the water supplementing block 20 may be communicated with an external cooling liquid supply device through connection pipelines, so as to continuously supply the cooling liquid in the cooling flow channel 410. Of course, the above embodiment is exemplary, and in some other embodiments, the water supplementing block 20 may be directly disposed at the liquid inlet 130 and the liquid outlet 140 of the connection protrusion without providing a pipe joint, so that the connection to the external cooling liquid supply device is realized through the connection pipe. The present disclosure is not limited thereto.

According to a third aspect of the present disclosure, there is also provided a vehicle including the above battery pack. The vehicle has all the beneficial effects of the battery pack, and the disclosure is not repeated here.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (12)

1. A cold plate structure, comprising:

the plate body is provided with a first end, a second end, a diversion area and a converging area, wherein the first end and the second end are opposite along a first direction, the diversion area is positioned at the first end, the converging area is positioned at the second end, and the plate body is provided with a liquid inlet and a liquid outlet; and

the cooling flow channel comprises a first flow channel section located in the flow distribution area, a plurality of second flow channel sections located between the flow distribution area and the flow converging area and a third flow channel section located in the flow converging area, the first flow channel section is split to be communicated with the second flow channel sections, the second flow channel sections are combined to be communicated with the third flow channel sections in the flow converging area, the first flow channel section is communicated with the liquid inlet, and the third flow channel section is communicated with the liquid outlet.

2. The cold plate structure of claim 1, wherein the first runner section extends outwardly in a second direction perpendicular to the first direction and splits into at least two co-extensive fourth runner sections extending outwardly in the second direction and splits into at least two of the second runner sections.

3. The cold plate structure of claim 2, wherein a plurality of the second flow path segments extend side-by-side and in a serpentine shape.

4. A cold plate structure according to any one of claims 1-3, wherein the number of cooling channels is two and symmetrically arranged with respect to the first direction.

5. The cold plate structure of claim 4, wherein the first end of the plate body has a connection portion extending outwardly in the first direction and centrally disposed with an edge of the first end, the liquid inlet and the liquid outlet being disposed on the connection portion.

6. The cold plate structure of claim 5, wherein the flow channel further comprises a first U-shaped flow channel section at the first end and extending partially to the connection portion, the first U-shaped flow channel section comprises two first branch flow channel sections symmetrical with respect to the first direction, and a first communication section communicated between the two first branch flow channel sections, the two first branch flow channel sections are respectively communicated with the two first flow channel sections, the liquid inlet is located at a middle position of the first communication section, and the liquid outlet is located between the two first branch flow channel sections.

7. The cold plate structure of claim 6, wherein the flow passage further comprises a second U-shaped flow passage section between the two cooling flow passages, the second U-shaped flow passage section comprising two second branch flow passage sections symmetrical with respect to the first direction, and a second communication section communicating between the two second branch flow passage sections, the two second branch flow passage sections communicating with the two third flow passage sections, respectively, a center position of the second communication section communicating with the liquid outlet through an extension flow passage section.

8. The cold plate structure of claim 1, wherein the plate body comprises a first plate body and a second plate body which are stacked, and a flow channel groove is arranged on the first plate body so as to enclose the flow channel together with the second plate body.

9. A battery pack, comprising:

the tray is provided with two expansion beams at intervals;

the battery pack is arranged on the tray and positioned between the two expansion beams; and

the cold plate structure of any one of claims 1-8, wherein a plate body of the cold plate structure is directly or indirectly attached to the battery pack, and the first end and the second end of the plate body are respectively connected to two expansion beams.

10. The battery pack according to claim 9, wherein the battery pack includes a plurality of cells arranged side by side in the first direction, the cells having two posts respectively located at opposite ends of the cells in the second direction, the plate body further having two post regions respectively located at opposite ends of the plate body in the second direction, and an intermediate region located between the two post regions, a first structural adhesive layer being provided between the split region and the battery pack and between the merge region and the battery pack, a second structural adhesive layer being provided between the post region and the battery pack, a third structural adhesive layer being provided between the intermediate region and the battery pack, the thermal conductivity of the third structural adhesive layer being greater than the thermal conductivity of the second structural adhesive layer, and the thermal conductivity of the second structural adhesive layer being greater than the thermal conductivity of the first structural adhesive layer.

11. The battery pack according to claim 10, wherein the plurality of battery cells are divided into two groups of battery cells arranged at intervals along the first direction, the two groups of battery cells are separated by a beam arranged on the tray, the plate body is connected to the beam, a fourth structural adhesive layer is arranged between the plate body and the beam and/or between the plate body and the expansion beam, and the thermal conductivity of the fourth structural adhesive layer is smaller than or equal to that of the first structural adhesive layer.

12. A vehicle comprising a battery pack according to any one of claims 9-11.