CN218602546U - Cooling plate, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a cooling plate, battery package and vehicle, cooling plate constitute first cooling runner including consecutive first board, intermediate lamella and second board between first board and the intermediate lamella, constitute second cooling runner between second board and the intermediate lamella, and the intermediate lamella is equipped with the through-hole that communicates first cooling runner and second cooling runner. The utility model provides a cooling plate has the good advantage of fashioned cooling flow channel leakproofness.

Description

Cooling plate, battery pack and vehicle

Technical Field

The utility model relates to a battery package technical field, concretely relates to cooling plate, battery package and vehicle.

Background

In the related art, a plurality of bent cooling channels are generally disposed in the cooling plate to ensure that the cooling channels are uniformly distributed in the cooling plate. The cooling plate and the internal linear cooling flow channels are processed and molded through an extrusion process, grooves need to be machined and cut at the moment, then plugging pieces are arranged in the grooves to communicate the internal linear cooling flow channels, and the molding flow channels are provided with bent flow channels. Therefore, the cooling plate in the related art has a defect that the sealing performance of the flow channel at the bending position is not easily ensured due to the influence of the processing and mounting process of the plugging piece.

SUMMERY OF THE UTILITY MODEL

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

Therefore, the embodiment of the present invention provides a cooling plate, which has the advantage of good sealing performance of the formed cooling flow channel.

The embodiment of the utility model also provides a battery package.

The embodiment of the utility model provides a vehicle is proposed again.

According to the utility model discloses the cooling plate is including consecutive first board, intermediate lamella and second board, the first board with constitute first cooling runner between the intermediate lamella, the second board with constitute second cooling runner between the intermediate lamella, the intermediate lamella is equipped with the intercommunication first cooling runner with the through-hole of second cooling runner.

According to the utility model discloses the cooling plate, through setting up consecutive first board, intermediate lamella and second board to constitute first cooling runner between first board and the intermediate lamella, constitute second cooling runner between second board and the intermediate lamella, finally through first cooling runner of through-hole intercommunication and second cooling runner, with constitute the runner that has bending jointly, the event need not to set up the shutoff piece that is used for the shaping runner portion of bending again as correlation technique, and then guaranteed the leakproofness of runner department of bending.

In some embodiments, the first cooling flow passage includes at least one first bent section and the second cooling flow passage includes at least one second bent section.

In some embodiments, each of the first cooling flow channel and the second cooling flow channel includes at least two, the first cooling flow channel and the second cooling flow channel are alternately arranged in a width direction of the first plate, and any adjacent first cooling flow channel and second cooling flow channel are communicated through the through hole.

In some embodiments, at least two of the through holes are provided, at least a part of the through holes are arranged at a first end of the middle plate in the length direction, the rest of the through holes are arranged at a second end of the middle plate in the length direction, and the first end and the second end are oppositely arranged.

In some embodiments, the first cooling flow channel includes three first flow channels, three third flow channels and three fifth flow channels, the second cooling flow channel includes two second flow channels and two fourth flow channels, the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel extend along the length direction of the first plate and are sequentially arranged at intervals along the width direction of the first plate, wherein a first end of the first flow channel is communicated with a first end of the second flow channel, a first end of the fourth flow channel is communicated with a first end of the fifth flow channel, and a second end of the second flow channel and a second end of the fourth flow channel are communicated with a second end of the third flow channel;

the first plate and/or be equipped with on the second plate with first cooling channel or the first water hole of crossing of second cooling channel intercommunication, the first plate and/or be equipped with on the second plate with first cooling channel or the water hole is crossed to the second of second cooling channel, the first water hole of crossing with the first end intercommunication of third runner, the water hole is crossed to the second with the second of first runner holds with the second of fifth runner holds the intercommunication.

In some embodiments, a first transition flow passage is formed between the first plate and the middle plate and communicates the second end of the first flow passage and the second end of the fifth flow passage, and the second water through hole is communicated with the first transition flow passage.

In some embodiments, the second plate and the middle plate further define a second transition flow passage therebetween communicating a second end of the second flow passage with a second end of the fourth flow passage, and a second end of the third flow passage is in communication with the second transition flow passage.

In some embodiments, the heights H of the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel are equal, the width H1 of the first flow channel is equal to the width H5 of the fifth flow channel, wherein H1 is greater than or equal to 5mm and less than or equal to 50mm, and H1/H is greater than or equal to 0.5 and less than or equal to 50.

In some embodiments, the width H2 of the second flow channel is equal to the width H4 of the fourth flow channel, the width of the third flow channel is H3, H1/H2 is greater than or equal to 0.1 and less than or equal to 10, and H1/H3 is greater than or equal to 0.1 and less than or equal to 10.

In some embodiments, the width H3 of the third flow channel is equal to or greater than the width H2 of the second flow channel.

In some embodiments, the through holes include three through holes, each of the three through holes includes a first through hole communicated with the first end of the first flow channel, a second through hole communicated with the first end of the fifth flow channel, and a third through hole communicated with the second end of the third flow channel, a U-shaped groove for forming the second flow channel, the fourth flow channel, and the second transition flow channel is formed in one side of the middle plate facing the second plate, and the first through hole, the second through hole, and the third through hole are formed in a side wall of the middle plate forming the U-shaped groove.

In some embodiments, a side of the middle plate facing the first plate is provided with a U-shaped protruding strip for forming the U-shaped groove, a side of the first plate facing the middle plate is provided with a receiving groove, the middle plate is connected with the first plate and closes an opening of the receiving groove, a top surface of the U-shaped protruding strip abuts against a bottom surface of the receiving groove, and the receiving groove is separated by the U-shaped protruding strip to form the first flow channel, the third flow channel and the fifth flow channel.

In some embodiments, the first plate is formed by stamping and the intermediate plate is formed by stamping, the first plate is connected with the intermediate plate by brazing, the second plate is a flat plate, and the second plate is connected with the intermediate plate by brazing.

In some embodiments, the first water through hole penetrates through the first plate, the intermediate plate, and the second water through hole penetrates through the first plate, the intermediate plate, and the second plate, and the cooling plate further includes two first joints and two second joints, the two first joints are respectively communicated with openings at both ends of the first water through hole, and the two second joints are respectively communicated with openings at both ends of the second water through hole.

The battery pack according to the embodiment of the present invention includes the cooling plate according to any one of the above embodiments.

According to the utility model discloses battery pack, the cooling plate through adopting above-mentioned embodiment comes with the heat dissipation of electric core butt in order to realize electric core, has simple, the processing cost is low of processing technology from this to and the good advantage of fashioned cooling runner leakproofness.

The vehicle according to the embodiment of the present invention includes the battery pack as in the above embodiment.

According to the utility model discloses the technical advantage of vehicle is the same with the technical advantage of the battery package of above-mentioned embodiment, and it is no longer repeated here.

Drawings

Fig. 1 is an exploded view of a cooling plate according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of a cooling plate according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a cooling plate according to an embodiment of the invention.

Fig. 4 is a schematic view of an intermediate plate in a cooling plate according to an embodiment of the present invention.

Fig. 5 is a distribution diagram of the cooling plate and the battery cell according to the embodiment of the present invention.

Fig. 6 is a schematic view of a first plate of a cooling plate according to an embodiment of the present invention.

Reference numerals are as follows:

1. a first plate; 11. accommodating grooves; 12. a first flow passage; 13. a third flow path; 14. a fifth flow channel; 16. a first transition flow path; 17. a second transition flow path; 2. a middle plate; 21. a U-shaped groove; 22. a second flow passage; 23. a fourth flow path; 24. a first through hole; 25. a second through hole; 26. a third through hole; 27. a first water through hole; 28. a second water through hole; 3. a second plate; 4. a first joint; 5. a second joint; 6. 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 with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A cooling plate according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

According to the utility model discloses cooling plate includes consecutive first board 1, intermediate lamella 2 and second board 3. A first cooling flow channel is formed between the first plate 1 and the middle plate 2, a second cooling flow channel is formed between the second plate 3 and the middle plate 2, and the middle plate 2 is provided with a through hole communicated with the first cooling flow channel and the second cooling flow channel.

According to the utility model discloses the cooling plate, through setting up consecutive first board 1, intermediate lamella 2 and second board 3, and constitute first cooling runner between first board 1 and the intermediate lamella 2, constitute second cooling runner between second board 3 and the intermediate lamella 2, finally through first cooling runner of through-hole intercommunication and second cooling runner, with constitute the runner that has the bending jointly, so need not to set up the shutoff piece that is used for the shaping runner portion of bending again as related art, and then guaranteed the leakproofness of runner in the department of bending.

Here, the first cooling flow channel formed between the first plate 1 and the intermediate plate 2 may be designed as a bent flow channel alone, the second cooling flow channel formed between the second plate 3 and the intermediate plate 2 may be designed as a bent flow channel alone, or the first cooling flow channel and the second cooling flow channel which are communicated with each other may form a bent flow channel together. From this, only need design first board 1, intermediate lamella 2 and second board 3's shape in advance, link to each other first board 1, intermediate lamella 2 and second board 3 in proper order afterwards, can form the cooling plate that has the runner of setting for the shape, need not set up the shutoff piece that is used for the shaping runner portion of bending again, first cooling runner and second cooling runner's leakproofness is good.

The cooling liquid in the first cooling flow channel and the second cooling flow channel is communicated with an external water tank through two water through holes, so that the circulating flow of the cooling liquid inside and outside the cooling plate is realized. In addition, as shown in fig. 5, the cooling plate may be a side cooling plate, and the first plate 1 and the second plate 3 may be respectively attached to the two sets of battery cells 6, so as to simultaneously implement heat dissipation of the two sets of battery cells 6, where the number of the battery cells 6 in the set of battery cells 6 may be one, or may be at least two arranged along the length direction of the cooling plate.

In some embodiments, the first cooling flow passage includes at least one first bent section and the second cooling flow passage includes at least one second bent section. That is, the coolant liquid that gets into in the runner can take place the cooling plate that flows out after the operation of switching-over many times when first section of bending and the second section of bending, and the coolant liquid in the cooling plate can realize the heat exchange through the inside runner of bending from this, and then effectively guarantees that the temperature of each position in the cooling plate is even, and then when the heat transfer scene to many electricity core 6, can effectively reduce the difference in temperature of the coolant liquid in the cooling plate region that every electricity core 6 corresponds, guarantees the temperature homogeneity of each electricity core 6.

In some embodiments, there are at least two first cooling flow channels and at least two second cooling flow channels, the first cooling flow channels and the second cooling flow channels are alternately arranged in the width direction of the first plate 1, and any adjacent first cooling flow channels and second cooling flow channels are communicated through the through holes. Therefore, the first cooling flow channel and the second cooling flow channel are communicated with each other, and when cooling liquid enters the cooling plate, the cooling liquid can pass through all the first cooling flow channels and the second cooling flow channels, so that the cooling effect of the cooling plate on the battery cell is ensured.

At this time, at least one of the first plate 1 and the second plate 3 is provided with a first water through hole 27 communicated with the first cooling flow channel or the second cooling flow channel, and at least one of the first plate 1 and the second plate 3 is provided with a second water through hole 28 communicated with the first cooling flow channel or the second cooling flow channel, so that the first water through hole 27 and the second water through hole 28 can be respectively used as a water outlet hole and a water inlet hole to realize the circulation flow of the cooling liquid inside and outside the cooling plate.

In some embodiments, as shown in fig. 2, at least two through holes are provided, at least a part of the through holes are provided at a first end of the middle plate 2 in the length direction, and the rest of the through holes are provided at a second end of the middle plate 2 in the length direction, and the first end and the second end are oppositely arranged.

Therefore, when the cooling liquid flows in the first cooling flow channel and the second cooling flow channel, if the cooling liquid flows from the first end of the first cooling flow channel to the second end, the cooling liquid flows into the second end of the second cooling flow channel through the through hole, so that the cooling liquid is ensured to circularly flow at all positions in the first cooling flow channel and the second cooling flow channel, and the cooling effect of the cooling plate on the battery cell is further ensured.

In some embodiments, as shown in fig. 2 and 3, the first cooling flow channels are three in number and include a first flow channel 12, a third flow channel 13, and a fifth flow channel 14, respectively. The second cooling flow channels are two in number and include a second flow channel 22 and a fourth flow channel 23, respectively. The first flow channel 12, the second flow channel 22, the third flow channel 13, the fourth flow channel 23, and the fifth flow channel 14 all extend in the length direction of the first plate 1, and are sequentially arranged at intervals in the width direction of the first plate 1.

Wherein, the first end of the first flow channel 12 is communicated with the first end of the second flow channel 22, the first end of the fourth flow channel 23 is communicated with the first end of the fifth flow channel 14, the second end of the second flow channel 22 and the second end of the fourth flow channel 23 are both communicated with the second end of the third flow channel 13, the first water through hole 27 is communicated with the first end of the third flow channel 13, and the second water through hole 28 is communicated with the second end of the first flow channel 12 and the second end of the fifth flow channel 14.

Taking the first water penetration hole 27 as an outlet hole and the second water penetration hole 28 as an inlet hole, the cooling liquid enters the first flow channel 12 and the fifth flow channel 14 through the second water penetration hole 28, then flows to the second flow channel 22 and the fourth flow channel 23 through the first flow channel 12 and the fifth flow channel 14, and finally flows to the third flow channel 13 through the first water penetration hole 27. The cooling liquid flows into and flows out of the cooling plate through the two serpentine flow channels which are connected in parallel, the flow of the cooling liquid in the cooling plate is larger, and the cooling effect of the cooling plate on the battery cell 6 is better.

Specifically, the first water passing hole 27 and the second water passing hole 28 are provided at both ends of the cooling plate in the longitudinal direction at this time. The first flow channel 12 and the fifth flow channel 14 are symmetrically arranged relative to the center line of the third flow channel 13, and the second flow channel 22 and the fourth flow channel 23 are symmetrically arranged relative to the center line of the third flow channel 13, so that the first flow channel 12 to the fifth flow channel 14 are more uniformly distributed in the cooling plate, the distribution area is larger, the heat exchange area is larger, and the cooling effect on the battery cell 6 is better.

In some embodiments, as shown in fig. 2, the first plate 1 and the middle plate 2 further define a first transition flow channel 16 therebetween, which communicates the second end of the first flow channel 12 with the second end of the fifth flow channel 14, and the second water through hole 28 communicates with the first transition flow channel 16.

That is, after the external coolant enters the first transition flow channel 16 through the second water through hole 28, the external coolant enters the first flow channel 12 and the fifth flow channel 14 through two ends of the first transition flow channel 16, respectively, so as to realize accurate flow distribution of the coolant.

Specifically, the first transition flow channel 16 forms a first bending section of the first cooling flow channel, the middle part of the first transition flow channel 16 is communicated with the second water through hole 28, two sections of the first transition flow channel 16 formed by separating the middle part are arranged in an angle mode, an included angle between one section of the first transition flow channel 16 communicated with the first flow channel 12 and the first flow channel 12 is an obtuse angle, and an included angle between one section of the first transition flow channel 16 communicated with the fifth flow channel 14 and the fifth flow channel 14 is an obtuse angle, so that the resistance and the flow rate influence of the cooling liquid when the cooling liquid flows into the first flow channel 12 and the fifth flow channel 14 from the first transition flow channel 16 are smaller.

Illustratively, the width of the first transition flow channel 16 is preferably substantially equal to the width of the first flow channel 12 and the fifth flow channel 14.

In some embodiments, as shown in fig. 2, the second plate 3 and the middle plate 2 further define a second transition flow channel 17 therebetween, the second end of the second flow channel 22 and the second end of the fourth flow channel 23 being communicated, and the second end of the third flow channel 13 being communicated with the second transition flow channel 17. Therefore, the cooling liquid in the second flow passage 22 and the fourth flow passage 23 is firstly collected in the second transition flow passage 17, and then enters the third flow passage 13 from the second transition flow passage 17, and the communication part of the second end of the second flow passage 22, the second end of the third flow passage 13 and the second end of the fourth flow passage 23 is simple in structure and low in processing cost.

Specifically, the second transition flow channel 17 forms a second bent section of the second cooling flow channel, two ends of the second transition flow channel 17 are bent from the middle portion thereof toward the direction close to the first end of the cooling plate, and the width of the second transition flow channel 17 is greater than or equal to the widths of the second flow channel 22 and the fourth flow channel 23.

In some embodiments, as shown in fig. 3, the first flow channel 12, the second flow channel 22, the third flow channel 13, the fourth flow channel 23, and the fifth flow channel 14 have the same height H, the width H1 of the first flow channel 12 is equal to the width H5 of the fifth flow channel 14, and the width H2 of the second flow channel 22 is equal to the width H4 of the fourth flow channel 23. That is, the cross-sectional area of the first flow channel 12 is equal to that of the fifth flow channel 14, the cross-sectional area of the second flow channel 22 is equal to that of the fourth flow channel 23, the flow channels in the cooling plate are symmetrically arranged, and the cooling plate has good cooling uniformity for each position of the battery core.

The width of the third flow channel 13 is H3, wherein H1 is more than or equal to 5mm and less than or equal to 50mm, H1/H is more than or equal to 0.5 and less than or equal to 50, H1/H2 is more than or equal to 0.1 and less than or equal to 10, and H1/H3 is more than or equal to 0.1 and less than or equal to 10.

Thereby, the height h of the first to fifth flow passages 12 to 14 can be flexibly set according to the size of the cooling plate, and the arrangement flexibility of the first to fifth flow passages 12 to 14 is high.

Specifically, if only five flow channels arranged at intervals in the width direction are provided in the cooling plate, the widths of the first flow channel 12 to the fifth flow channel 14 are all larger than the heights, so that the use requirement that the gap between the adjacent battery cells is small is met.

Further, the width H1 of the first flow channel 12 and the width H5 of the fifth flow channel 14 are greater than the heights H of the first flow channel 12 to the fifth flow channel 14, and the width H2 of the second flow channel 22 is less than or equal to the width H1 of the first flow channel 12. Therefore, when the coolant enters the second flow channel 22 from the first flow channel 12 and enters the fourth flow channel 23 from the fifth flow channel 14, the flow velocity of the coolant is increased, and the coolant can better converge to the middle third flow channel 13 and fill the third flow channel 13.

Further, the width H3 of the third flow channel 13 is equal to or greater than the width H2 of the second flow channel 22.

Therefore, the problem that the cooling liquid in the second flow passage 22 and the fourth flow passage 23 cannot rapidly pass through the third flow passage 13 due to the fact that the cross sectional area of the third flow passage 13 is too small is effectively avoided, the flow rate of the cooling liquid in the cooling plate is larger, and the cooling effect of the cooling plate is better.

In some embodiments, as shown in fig. 4, the through holes are three and respectively include a first through hole 24 communicating with the first end of the first flow channel 12, a second through hole 25 communicating with the first end of the fifth flow channel 14, and a third through hole 26 communicating with the second end of the third flow channel 13, and the side of the middle plate 2 facing the second plate 3 is provided with a U-shaped groove 21 for forming the second flow channel 22, the fourth flow channel 23, and the second transition flow channel 17. The first through hole 24, the second through hole 25 and the third through hole 26 are all arranged on the side wall of the middle plate 2 forming the U-shaped groove 21.

That is, only the first through hole 24, the second through hole 25 and the third through hole 26 need to be processed on the intermediate plate 2, so that the communication between the first end of the first flow channel 12 and the first end of the second flow channel 22, the communication between the first end of the fourth flow channel 23 and the first end of the fifth flow channel 14, and the communication between the second end of the third flow channel 13 and the second transition flow channel 17 can be realized, and redundant processing of the first plate 1 and the second plate 3 is not required, so that the first plate 1, the second plate 3 and the intermediate plate 2 are simple in structure and low in processing cost.

In some embodiments, as shown in fig. 3, the second plate 3 is a flat plate, and the second plate 3 is brazed to the intermediate plate 2 and closes the opening of the U-shaped channel 21.

Namely, the U-shaped groove 21 forms the second runner 22 and the fourth runner 23, and the second plate 3 does not need to be processed into grooves forming the second runner 22 and the fourth runner 23, so that the cooling plate has the advantages of simple structure, simple processing technology and low processing cost.

In some embodiments, as shown in fig. 3 and 6, a side of the intermediate plate 2 facing the first plate 1 is provided with a U-shaped protrusion for forming a U-shaped groove 21, a side of the first plate 1 facing the intermediate plate 2 is provided with a receiving groove 11, the intermediate plate 2 is connected to the first plate 1 and closes an opening of the receiving groove 11, a top surface of the U-shaped protrusion abuts against a bottom surface of the receiving groove 11, and the U-shaped protrusion partitions the receiving groove 11 into the first flow passage 12, the third flow passage 13 and the fifth flow passage 14. Therefore, the first plate 1 and the middle plate 2 are simple in structure and low in processing cost.

Specifically, both end surfaces of the U-shaped ridge are also brazed to the side surfaces of the accommodating groove 11, thereby separating the first end of the first flow channel 12 from the first end of the third flow channel 13, and separating the first end of the fifth flow channel 14 from the first end of the third flow channel 13. In addition, the top surfaces of the U-shaped convex strips are U-shaped planes parallel to the bottom surface of the accommodating groove 11, and the top surfaces of the U-shaped convex strips are connected with the bottom surface of the accommodating groove 11 by brazing, so that the independent sealing performance of the first flow channel 12, the third flow channel 13 and the fifth flow channel 14 formed between the first plate 1 and the middle plate 2 is ensured.

In some embodiments, the first plate 1 is stamped and the intermediate plate 2 is stamped and formed, and the first plate 1 is brazed to the intermediate plate 2.

Therefore, the processing technology of the first plate 1 and the middle plate 2 is simple, the connection strength between the first plate 1 and the middle plate 2 is high, and the sealing performance of the first flow channel 12, the third flow channel 13 and the fifth flow channel 14 formed between the first plate 1 and the middle plate 2 is good.

In some embodiments, as shown in fig. 1, the first water passing holes 27 penetrate the first plate 1, the intermediate plate 2, and the second plate 3. The second water passing holes 28 penetrate the first plate 1, the intermediate plate 2 and the second plate 3. The cooling plate further comprises two first joints 4 and two second joints 5, wherein the two first joints 4 are respectively communicated with openings at two ends of the first water through hole 27, and the two second joints 5 are respectively communicated with openings at two ends of the second water through hole 28.

Therefore, when the cooling plate is used as a side cooling plate or used in a plurality of ways, the parallel arrangement of at least two cooling plates can be realized through the two first joints 4 and the two second joints 5, so that the heat dissipation efficiency of the liquid cooling heat dissipation device formed by the at least two cooling plates is ensured.

Alternatively, the first water through hole 27 and the second water through hole 28 may be provided as blind holes, that is, the openings of the first water through hole 27 and the second water through hole 28 are provided only on the first plate 1 or the second plate 3, in which case at least two cooling plates may be connected in series in the cooling circuit through the first joint 4 and the second joint 5.

The battery pack according to the embodiment of the present invention includes the cooling plate according to any one of the above embodiments.

According to the utility model discloses battery pack, the cooling plate through adopting above-mentioned embodiment comes with the heat dissipation of electricity core 6 in order to realize electric core 6 with electricity core 6 butt, has simple, the processing cost of processing technology low from this to and the good advantage of fashioned cooling flow channel leakproofness.

The vehicle according to the embodiment of the present invention includes the battery pack as in the above embodiment.

According to the utility model discloses the technical advantage of vehicle is the same with the technical advantage of the battery package of above-mentioned embodiment, and it is no longer repeated here.

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 the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the 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, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. 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.

While embodiments of the present invention have been shown and described above, 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 of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (16)

1. A cooling plate, comprising:

the first plate, the intermediate plate and the second plate that link to each other in proper order, the first plate with constitute first cooling runner between the intermediate plate, the second plate with constitute second cooling runner between the intermediate plate, the intermediate plate is equipped with the intercommunication first cooling runner with the through-hole of second cooling runner.

2. A cooling plate as claimed in claim 1, wherein said first cooling flow path includes at least one first bent section and said second cooling flow path includes at least one second bent section.

3. The cooling plate as claimed in claim 1, wherein there are at least two of the first cooling flow passages and the second cooling flow passages, the first cooling flow passages and the second cooling flow passages are alternately arranged in a width direction of the first plate, and any adjacent first cooling flow passages and second cooling flow passages are communicated through the through holes.

4. The cooling plate as claimed in claim 1 or 3, wherein at least two of said through holes are provided, at least a part of said through holes are provided at a first end of said intermediate plate in a length direction, and the remaining of said through holes are provided at a second end of said intermediate plate in the length direction, said first end and said second end being disposed opposite to each other.

5. The cooling plate as claimed in claim 3, wherein the first cooling flow passages are three and respectively include a first flow passage, a third flow passage and a fifth flow passage, the second cooling flow passages are two and respectively include a second flow passage and a fourth flow passage, the first flow passage, the second flow passage, the third flow passage, the fourth flow passage and the fifth flow passage all extend along a length direction of the first plate and are sequentially arranged at intervals along a width direction of the first plate, wherein,

the first end of the first flow channel is communicated with the first end of the second flow channel, the first end of the fourth flow channel is communicated with the first end of the fifth flow channel, and the second end of the second flow channel and the second end of the fourth flow channel are both communicated with the second end of the third flow channel;

at least one of the first plate and the second plate is provided with a first water through hole communicated with the first cooling flow channel or the second cooling flow channel, at least one of the first plate and the second plate is provided with a second water through hole communicated with the first cooling flow channel or the second cooling flow channel, the first water through hole is communicated with the first end of the third flow channel, and the second water through hole is communicated with the second end of the first flow channel and the second end of the fifth flow channel.

6. The cooling plate as claimed in claim 5, wherein a first transition flow passage is defined between the first plate and the middle plate and communicates the second end of the first flow passage and the second end of the fifth flow passage, and the second water through hole communicates with the first transition flow passage.

7. The cooling plate as claimed in claim 6, wherein the second plate and the intermediate plate further define therebetween a second transition flow passage communicating between the second end of the second flow passage and the second end of the fourth flow passage, the second end of the third flow passage communicating with the second transition flow passage.

8. The cooling plate as claimed in claim 5, wherein the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel have the same height H, and the first flow channel has a width H1 equal to the width H5 of the fifth flow channel, wherein H1 is 5 mm-50mm, and H1/H is 0.5-50.

9. The cooling plate as claimed in claim 8, wherein the width H2 of the second flow channel is equal to the width H4 of the fourth flow channel, the width of the third flow channel is H3,0.1 ≦ H1/H2 ≦ 10,0.1 ≦ H1/H3 ≦ 10.

10. The cooling plate as claimed in claim 9, wherein a width H3 of the third flow channel is equal to or greater than a width H2 of the second flow channel.

11. A cooling plate according to claim 7, characterized in that said through holes are three and comprise a first through hole communicating with the first end of said first flow channel, a second through hole communicating with the first end of said fifth flow channel and a third through hole (26) communicating with the second end of said third flow channel, respectively, and that said intermediate plate is provided with a U-shaped groove for forming said second flow channel, said fourth flow channel and said second transition flow channel on the side facing said second plate, said first through hole, said second through hole and said third through hole being provided in said intermediate plate on the side wall forming said U-shaped groove.

12. The cooling plate as claimed in claim 11, wherein a side of the intermediate plate facing the first plate is provided with a U-shaped protrusion for forming the U-shaped groove, a side of the first plate facing the intermediate plate is provided with a receiving groove, the intermediate plate is connected to the first plate and closes an opening of the receiving groove, a top surface of the U-shaped protrusion abuts against a bottom surface of the receiving groove, and the U-shaped protrusion partitions the receiving groove to form the first flow passage, the third flow passage and the fifth flow passage.

13. The cooling plate as claimed in claim 1, wherein said first plate is formed by stamping and said intermediate plate is formed by stamping, said first plate is brazed to said intermediate plate, said second plate is a flat plate, and said second plate is brazed to said intermediate plate.

14. The cooling plate as claimed in claim 5, wherein the first water through holes penetrate the first plate, the intermediate plate and the second plate, and the second water through holes penetrate the first plate, the intermediate plate and the second plate, the cooling plate further comprising two first joints and two second joints, the two first joints being respectively communicated with openings at both ends of the first water through holes, and the two second joints being respectively communicated with openings at both ends of the second water through holes.

15. A battery pack comprising the cooling plate according to any one of claims 1 to 14.

16. A vehicle characterized by comprising the battery pack according to claim 15.

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