CN219303765U - Cooling plate, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a cooling plate, a battery pack and a vehicle, wherein the cooling plate comprises a body and a baffle strip, the body comprises a first plate body and a second plate body, the first plate body and the second plate body are connected and enclosed into a cavity, two ends of the body in the length direction of the body are provided with a water inlet and a water outlet, the cavity is provided with a first side wall and a second side wall which are opposite in the width direction of the body, the first side wall and/or the second side wall are provided with limiting protrusions, the first plate body is provided with a first folded edge which can be buckled on the second plate body, and/or the second plate body is provided with a second folded edge which can be buckled on the first plate body, the baffle strip is arranged in the cavity and can form a bent and extended runner, and the runner is communicated with the water inlet and the water outlet. The cooling plate disclosed by the utility model cannot be damaged by expansion and extrusion of the battery core, has good heat dissipation and temperature uniformity on each position of the battery core, has long service life of the battery pack, has good sealing effect, and is not easy to leak cooling liquid.

Description

Cooling plate, battery pack and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a cooling plate, a battery pack and a vehicle.

Background

In recent years, electric automobiles are valued and supported by the government because of the characteristics of small pollution to the atmospheric environment and diversified energy sources, and are developed more and more rapidly.

The battery pack is used as the electric automobile's important structure usually includes the box and locates the electric core in the box, the electric core is arranged by a plurality of group battery and is constituted, be equipped with the cooling plate between the adjacent group battery in order to dispel the heat to the electric core, cooling plate among the correlation technique is including the deformability and the non-deformability two kinds, the problem that the extrusion damage can appear in the cooling plate of non-deformability when the electric core expands, and the cooling plate of deformability receives the electric core extrusion to warp the back, the deformation excessively leads to the cooling plate to laminate with the electric core and is not inseparable, cause the cooling plate radiating effect poor, battery pack life is short, the overall arrangement of the cooling runner in the cooling plate among the correlation technique is unreasonable in addition, lead to the battery pack samming nature poor, further reduced battery pack's performance and life, and the cooling plate has the problem that leads to the coolant to leak because of the leakproofness is poor.

Therefore, how to provide a cooling plate with good temperature uniformity, which can avoid excessive deformation to affect the adhesion between the cooling plate and the battery cell and has good sealing performance is needed to solve the technical problem.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the cooling plate, the baffle strips are arranged inside the cooling plate, the baffle strips are utilized to construct the bent and extended flow channels, the bent and extended flow channels are utilized to radiate heat to each position of the battery core, the battery core has good temperature uniformity, and the baffle strips are provided with the limiting protrusions in a penetrating way, so that when the battery core expands, the limiting protrusions can be prevented from abutting against the inner walls of two sides of the cooling plate after the cooling plate is extruded and deformed to a certain degree, the cooling plate is prevented from continuously deforming, the excessive deformation of the cooling plate is avoided, the cooling plate is ensured to be always attached to the battery core, the heat radiation effect of the cooling plate is improved, the service life of the battery pack is prolonged, in addition, the first plate body and the second plate body are provided with folded edges which can be buckled, the buckling tightness of connection can be improved, and the risk of leakage of cooling liquid is avoided.

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

The embodiment of the utility model also provides a vehicle.

The cooling plate of the embodiment of the utility model comprises: the body comprises a first plate body and a second plate body which are oppositely arranged in the width direction of the body, the first plate body and the second plate body are connected and enclosed to form a cavity extending along the length direction of the body, two ends of the body in the length direction of the body are respectively provided with a water inlet and a water outlet which are communicated with the cavity, the cavity is provided with a first side wall and a second side wall which are opposite in the width direction of the body, the first side wall and/or the second side wall are provided with limiting protrusions protruding in the width direction of the body, the first plate body is provided with a first folded edge, the first folded edge can be buckled on the second plate body, and/or the second plate body is provided with a second folded edge, and the second folded edge can be buckled on the first plate body; the baffle strip is arranged in the cavity and is in sealing contact with the first plate body and the second plate body, the baffle strip can form a bent runner in the cavity, one end of the runner is communicated with the water inlet, and the other end of the runner is communicated with the water outlet.

According to the cooling plate provided by the embodiment of the utility model, the baffle strips are arranged in the cavity, the bent and extended flow channel communicated with the water inlet and the water outlet is formed by utilizing the baffle strips, the flow stroke of cooling liquid in the cooling plate can be increased by utilizing the bent flow channel, the heat exchange capacity is further improved, the bent flow channel can radiate heat at each position of the battery cell relative to the straight flow channel, the temperature uniformity is good, the cooling plate can be deformed to adapt to the expansion of the battery cell, the extrusion damage is avoided, the limiting protrusions are arranged on the opposite inner side walls of the cooling plate, the limiting protrusions can directly abut against the inner walls of the cooling plate after the cooling plate is deformed to a certain extent so as to prevent the excessive deformation of the cooling plate, the tight fit between the cooling plate and the battery cell is ensured, the heat radiation effect is improved, the service life of a battery pack is prolonged, in addition, the first plate body and/or the second plate body is provided with the folded edges, the tightness of the connection of the first plate body and the second plate body is improved by utilizing the buckling of the folded edges, the sealing property of the cooling plate is good, the cooling liquid is not easy to leak, and the reliability of heat radiation is ensured.

In some embodiments, the first and second folds are symmetrically arranged about a center of the body.

In some embodiments, the first flange and/or the second flange comprises a long side section extending in a length direction of the body and a short side section extending in a height direction of the body, the corners of the long side section and the short side section being broken.

In some embodiments, a sealing groove is formed in the connecting surface of the first plate body and the second plate body and/or the connecting surface of the second plate body and the first plate body, and a sealing element is arranged in the sealing groove.

In some embodiments, the seal groove extends along a circumferential direction of the first plate body or the second plate body, and the seal is an annular seal ring.

In some embodiments, the limiting protrusions are a plurality of, and the limiting protrusions are spaced apart along the length direction of the body and are arranged in a plurality of rows at intervals in the height direction of the body.

In some embodiments, the plurality of spacing protrusions includes an upper spacing protrusion adjacent to the top of the body, a lower spacing protrusion adjacent to the bottom of the body, and a middle spacing protrusion at a middle position, the middle spacing protrusion having a smaller dimension in the width direction of the body than the upper spacing protrusion and the lower spacing protrusion.

In some embodiments, the barrier strip is L-shaped, and the barrier strip includes a first barrier strip and a second barrier strip, the first barrier strip includes a first long side and a first short side, the second barrier strip includes a second long side and a second short side, the first short side is connected with the bottom wall of the cavity and vertically disposed, the first long side extends along the length direction of the body, the second short side is connected with the top wall of the cavity and vertically disposed, the second long side extends along the length direction of the body, and the first short side and the second short side are relatively disposed in the length direction of the body, the second long side is spaced apart from the first long side in the height direction of the body, the first long side is spaced apart from the second short side to form a runner corner, and the second long side is spaced apart from the first short side to form a runner corner.

The battery pack provided by the embodiment of the utility model comprises a plurality of battery cells and a plurality of cooling plates, wherein the battery cells extend along the length direction of the cooling plates and are arranged at intervals in the width direction of the cooling plates, one cooling plate is clamped between adjacent battery cells, and the cooling plates are the cooling plates in the embodiment.

According to the battery pack provided by the embodiment of the utility model, the cooling plate is adopted, so that the battery pack has good heat dissipation performance, long service life and good charge and discharge capability.

The vehicle of the embodiment of the utility model comprises the battery pack of the embodiment.

By adopting the battery pack, the vehicle provided by the embodiment of the utility model has good vehicle performance and strong cruising ability.

Drawings

Fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a cooling plate according to an embodiment of the present utility model.

Fig. 3 is a front view of a cooling plate according to an embodiment of the present utility model.

Fig. 4 is a top view of a cooling plate according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of a cooling plate according to an embodiment of the present utility model.

Fig. 6 is a cross-sectional view of a cooling plate according to another embodiment of the present utility model.

Fig. 7 is an exploded view of a cooling plate according to an embodiment of the present utility model.

Fig. 8 is a cross-sectional view of a cooling plate according to an embodiment of the present utility model.

Reference numerals:

the battery pack comprises a body 1, a water inlet 11, a water outlet 12, a water inlet pipe 13, a water outlet pipe 14, a first plate 15, a second plate 16, a first folding edge 17, a second folding edge 18, a sealing groove 19, a first barrier strip 2, a second barrier strip 3, a limiting protrusion 4, a battery cell 5 and a sealing piece 6.

Detailed Description

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

As shown in fig. 1 to 8, the cooling plate of the present utility model includes a body 1 and barrier ribs.

Specifically, as shown in fig. 1-8, the body 1 is deformable, the body 1 includes a first plate body 15 and a second plate body 16, the first plate body 15 and the second plate body 16 are connected and enclosed to form a cavity extending along the length direction of the body 1, two ends of the body 1 in the length direction of the body are respectively provided with a water inlet 11 and a water outlet 12 communicated with the cavity, the cavity includes a first side wall and a second side wall opposite to each other in the width direction, a barrier strip is arranged in the cavity and is in sealing contact with the first side wall and the second side wall, a runner extending in a bending manner can be constructed in the cavity, one end of the runner is communicated with the water inlet 11, the other end of the runner is communicated with the water outlet 12, the water inlet 11 is externally connected with the water inlet 13, and the water outlet 12 is externally connected with the water outlet 14.

Therefore, the baffle strips are arranged in the cavity, the bending flow channels communicated with the water inlet 11 and the water outlet 12 are formed by the baffle strips, the flow stroke of cooling liquid in the cooling plate can be increased by the bending flow channels, the heat exchange capacity is further improved, the heat dissipation can be carried out on the positions of the battery cell 5 by the bending flow channels relative to the straight flow channels, the temperature uniformity is good, and the service life of the battery pack is long.

Further, the first side wall and/or the second side wall is provided with a stopper projection 4 projecting in the width direction of the body 1. It will be appreciated that the expansion of the battery cell 5 will squeeze, and as the first side wall and the second side wall approach each other as the body 1 deforms, the limiting protrusion 4 can prevent the body 1 from continuing to deform to a certain extent when the first side wall and the second side wall approach each other. In other words, the cooling plate of this application both can be when electric core 5 inflation self-adaptation deformation, can utilize locating the spacing protruding 4 on the cooling plate inner wall again to prevent the excessive deformation of cooling plate, guarantees that the cooling plate can laminate throughout with electric core 5.

In addition, the first plate 15 has a first folded edge 17, the first folded edge 17 may be fastened to the second plate 16, and/or the second plate 16 has a second folded edge 18, and the second folded edge 18 may be fastened to the first plate 15. Therefore, the tightness of the connection between the first plate body 15 and the second plate body 16 can be further improved by the buckling of the folded edges, the tightness of the cooling plate is improved, and the cooling liquid is not easy to leak. Preferably, the buckling part of the folded edge can be glued and sealed.

According to the cooling plate provided by the embodiment of the utility model, the barrier strips are arranged in the cavity, the barrier strips are utilized to construct the bent and extended flow channel communicated with the water inlet 11 and the water outlet 12, the bent flow channel can be utilized to increase the flow stroke of cooling liquid in the cooling plate, the heat exchange capacity is further improved, the bent flow channel can radiate heat at each position of the battery cell 5 relative to the straight flow channel, the temperature uniformity is good, the cooling plate can deform to adapt to the expansion of the battery cell 5, the extrusion damage is avoided, the limiting protrusions 4 are arranged on the opposite inner side walls of the cooling plate, the limiting protrusions 4 can directly abut against the inner wall of the cooling plate after the cooling plate deforms to a certain degree so as to prevent the cooling plate from excessively deforming, the cooling plate is tightly attached to the battery cell 5, the heat radiation effect is improved, the service life of a battery pack is prolonged, in addition, the first plate body 15 and/or the second plate body 16 are provided with folded edges, the connection tightness of the first plate body 15 and the second plate body 16 can be improved by utilizing folded edges, the sealing property of the cooling plate is good, the cooling liquid is not easy to leak, and the reliability of heat radiation is ensured.

Preferably, the first and second flanges 17, 18 are symmetrically arranged about the centre of the body 1. Thus, the first plate 15 and the second plate 16 are identical in structure, and can be produced and manufactured uniformly, so that the production efficiency is high and the cost is low.

Preferably, the first flange 17 and/or the second flange 18 comprise a long side section extending in the length direction of the body 1 and a short side section extending in the height direction of the body 1, the corners of the long side section and the short side section being broken. Therefore, the corner of the folded edge is broken, and the processing and the manufacturing are convenient.

Preferably, the first folding edge 17 is provided on the outer periphery of one long side and one short side of the first plate 15, and the second folding edge 18 is provided on the outer periphery of the other long side and the other short side of the second plate 16, so that after the first plate 15 and the second plate 16 are connected, the first folding edge 17 and the second folding edge 18 can fasten the whole circumference of the first plate 15 and the second plate 16.

Preferably, as shown in fig. 6 and 7, a sealing groove 19 is provided on the connection surface between the first plate body 15 and the second plate body 16 and/or the connection surface between the second plate body 16 and the first plate body 15, and a sealing member 6 is provided in the sealing groove 19. Therefore, the connection between the sealing piece 6 and the first plate body 15 and the second plate body 16 can form a double seal, the buckling connection between the first folding edge 17 and the second folding edge 18 can form a second double seal, and the double seals form double insurance, so that the leakage prevention capability of the cooling plate is further improved.

Preferably, the inner side and the outer side of the sealing member 6 can be welded or glued, so that the sealing effect is further improved.

Preferably, as shown in fig. 7, the seal groove 19 extends along the circumferential direction of the first plate body 15 or the second plate body 16, and the seal 6 is an annular seal ring. Thereby, the sealing ring can form a seal over the entire circumference of the body 1.

Further, as shown in fig. 6 to 8, the plurality of the stopper protrusions 4 are plural, and the plurality of stopper protrusions 4 are spaced apart in the longitudinal direction of the body 1 and are arranged at intervals in a plurality of rows in the height direction of the body 1. Thereby, the plurality of limit protrusions 4 can improve the limit reliability.

Further, the inventor finds that the expansion amounts of the different positions of the battery cell 5 are different, and correspondingly, the deformation amounts of the positions of the cooling plate attached to the battery cell 5 are also different, so that the cooling plate is locally deformed, and finally, the heat dissipation effect of the battery pack is poor, and the service life is short.

To the different problem of electric core 5 different position deflection, a plurality of spacing protruding 4 of this application are including the spacing protruding 4 in upper strata that is close to the top in the direction of height, the spacing protruding 4 in lower floor that is close to the bottom and the spacing protruding 4 in middle part position in middle of being located, and the spacing protruding 4 in middle is less than the spacing protruding 4 in upper strata's size and the spacing protruding 4 in lower floor's size in the width direction's size.

In other words, the variable quantity adjacent to the middle position is large, and the variable quantity at the edge position is small, so that the variable quantity at different positions of the cooling plate is matched with the expansion quantity at different positions of the battery cell 5, the cooling plate and the battery cell 5 are ensured to be always attached, the heat dissipation effect on the battery cell 5 is improved, and the service life of the battery pack is prolonged.

Optionally, the barrier rib includes a plurality of rib segments spaced apart in a height direction and extending in a length direction. It is understood that a section of flow channel can be formed between adjacent sections, and a plurality of flow channels can be communicated to form a bent and extended flow channel. Preferably, the flow channel is s-shaped.

Further, one end of the strip section is connected with one end, the other end of the strip section and the other end of the strip section are separated to form a runner corner, and the runner corners formed by the adjacent strip sections are respectively positioned at two ends in the length direction.

Preferably, as shown in fig. 7, the barrier strip is L-shaped, and the barrier strip includes a first barrier strip 2 and a second barrier strip 3, the first barrier strip 2 includes a first long side and a first short side, the second barrier strip 3 includes a second long side and a second short side, the first short side is connected with the bottom wall of the cavity and vertically arranged, the length direction of the first long side extends, the second short side is connected with the top wall of the cavity and vertically arranged, the length direction of the second long side extends, the first short side and the second short side are oppositely arranged in the length direction, the second long side is spaced from the first long side in the height direction, the first long side and the second short side form a runner corner at intervals, and the second long side and the first short side form a runner corner at intervals.

For ease of understanding, the channel formed between the first long side and the cavity top wall is defined as a first channel, the channel formed between the second long side and the cavity bottom wall is defined as a third channel, the channel formed by the first long side and the second long side is defined as a second channel, then the first channel and the second channel are communicated through the channel corner between the first long side and the second short side, and the second channel and the third channel are communicated through the channel corner between the second long side and the first short side, thereby the first channel, the second channel and the third channel can form a bent s-shaped channel.

Preferably, the cavity has opposite third and fourth side walls in its length direction, the first short side is adjacent to the third side wall and forms a first drainage channel with the third side wall at intervals, the second short side is adjacent to the fourth side wall and forms a second drainage channel with the fourth side wall at intervals, the water inlet 11 is opposite to and communicates with the first drainage channel, and the water outlet 12 is opposite to and communicates with the second drainage channel. Thus, the layout can maximize the flow path of the cooling liquid along the s-shaped flow channel and maximize the heat dissipation capacity of the cooling plate.

Alternatively, the first barrier rib 2 is connected to the first side wall and abuts against the second side wall, and the second barrier rib 3 is connected to the second side wall and abuts against the first side wall.

Alternatively, the positioning of the positioning protrusion 4 may take various forms, for example, the positioning protrusion 4 may be disposed on one of the first sidewall and the second sidewall, or the positioning protrusion 4 may be disposed on both sides (as shown in fig. 6), and the positioning protrusion 4 may be a cylinder or a bar extending along the length direction.

Optionally, the spacing protrusion 4 may be opposite to the spacer bar, the spacer bar may be provided with a mating hole corresponding to the spacing protrusion 4, and the spacing protrusion 4 may be disposed in the mating hole in a penetrating manner so as to have an assembly positioning effect on the spacer bar.

Alternatively, as shown in fig. 8, the limit projection 4 may be located in the flow channel to play a role of turbulence.

Preferably, one part of the plurality of limiting protrusions 4 is opposite to the barrier ribs, and the other part is arranged in the flow channel.

Preferably, the first side wall and/or the second side wall are/is provided with a pressing protrusion, and the pressing protrusion can press the barrier strip. For example, the barrier strip is arranged on the first side wall, and the pressing protrusion is arranged on the second side wall and can resist one side of the barrier strip facing the second side wall, so that the sealing assembly effect of the barrier strip is improved.

Alternatively, the first plate 15 and the second plate 16 may be not two parallel surfaces after being buckled, but two surfaces with raised middle parts, and may be pressed into parallel surfaces when assembled with the battery cell 5. The cooling plate is pressed the process and can provide the extrusion force to electric core 5, improves group battery rigidity, and the cooling plate size is pressed and is reduced also can absorb electric core 5 thickness and group battery assembly tolerance, guarantees that electric core 5 and cooling plate press close to.

Optionally, the thickness of the cooling plate is 0.5mm-20mm; the wall thickness of the first plate 15 and the second plate 16 is 0.1mm-10mm.

Optionally, the minimum width of the flow channel is 0.1mm-5mm after the cooling plate is deformed by extrusion.

Optionally, the minimum width of the flow channel is 2% -98% of the original thickness of the cooling plate after the cooling plate is extruded and deformed.

Alternatively, the first plate body 15 and the second plate body 16 are joined by brazing, laser welding or adhesive to constitute a cooling plate.

Optionally, the barrier strip is connected to the body 1 by glue or any other means to ensure a fit.

Optionally, the barrier strip is a foam material, or a solid material.

Optionally, the barrier strip is silicone rubber, melamine rubber, polyurethane, epoxy, or nylon.

Optionally, the baffle strip is in a die-cutting structure, or a glue strip solidified after glue coating, or a structure formed by extrusion.

The battery pack of the embodiment of the utility model comprises a plurality of battery cells 5 and a plurality of cooling plates, wherein the battery cells 5 extend along the length direction of the cooling plates and are arranged at intervals in the width direction of the cooling plates, one cooling plate is clamped between adjacent battery cells 5, and the cooling plates are the cooling plates of the embodiment.

According to the battery pack provided by the embodiment of the utility model, the cooling plate is adopted, so that the battery pack has good heat dissipation performance, long service life and good charge and discharge capability.

The vehicle of the embodiment of the utility model includes the battery pack of the above embodiment.

By adopting the battery pack, the vehicle provided by the embodiment of the utility model has good vehicle performance and strong cruising ability.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

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

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A cooling plate, comprising:

the body comprises a first plate body and a second plate body which are oppositely arranged in the width direction of the body, the first plate body and the second plate body are connected and enclosed to form a cavity extending along the length direction of the body, two ends of the body in the length direction of the body are respectively provided with a water inlet and a water outlet which are communicated with the cavity, the cavity is provided with a first side wall and a second side wall which are opposite in the width direction of the body, the first side wall and/or the second side wall are provided with limiting protrusions protruding in the width direction of the body, the first plate body is provided with a first folded edge, the first folded edge can be buckled on the second plate body, and/or the second plate body is provided with a second folded edge, and the second folded edge can be buckled on the first plate body;

the baffle strip is arranged in the cavity and is in sealing contact with the first plate body and the second plate body, the baffle strip can form a bent runner in the cavity, one end of the runner is communicated with the water inlet, and the other end of the runner is communicated with the water outlet.

2. The cooling plate of claim 1, wherein the first and second folds are symmetrically arranged about a center of the body.

3. The cooling plate according to claim 2, characterized in that the first and/or the second flange comprises a long side section extending in the length direction of the body and a short side section extending in the height direction of the body, the corners of the long side section and the short side section being broken.

4. The cooling plate according to claim 1, wherein a sealing groove is provided in a connection surface of the first plate body with the second plate body and/or in a connection surface of the second plate body with the first plate body, and a sealing member is provided in the sealing groove.

5. The cooling plate of claim 4, wherein the seal groove extends circumferentially of the first plate body or the second plate body, and the seal is an annular seal ring.

6. The cooling plate according to any one of claims 1 to 5, wherein the plurality of the limit projections are spaced apart in the longitudinal direction of the body and are arranged at intervals in a plurality of rows in the height direction of the body.

7. The cooling plate according to claim 6, wherein the plurality of the limit protrusions include an upper limit protrusion adjacent to the top of the body, a lower limit protrusion adjacent to the bottom of the body, and a middle limit protrusion at a middle position, and a dimension of the middle limit protrusion in a width direction of the body is smaller than a dimension of the upper limit protrusion and a dimension of the lower limit protrusion.

8. The cooling plate according to any one of claims 1 to 5, wherein the barrier strip is L-shaped and comprises a first barrier strip and a second barrier strip, the first barrier strip comprises a first long side and a first short side, the second barrier strip comprises a second long side and a second short side, the first short side is connected to and vertically disposed with a bottom wall of the cavity, the first long side extends along a length direction of the body, the second short side is connected to and vertically disposed with a top wall of the cavity, the second long side extends along the length direction of the body, and the first short side and the second short side are oppositely disposed in the length direction of the body, the second long side is spaced apart from the first long side in a height direction of the body, the first long side is spaced apart from the second short side to form a flow passage, and the second long side is spaced apart from the first short side to form a corner.

9. A battery pack comprising a plurality of cells and a plurality of cooling plates, wherein the cells extend in a longitudinal direction of the cooling plates and are arranged at intervals in a width direction of the cooling plates, one cooling plate is arranged between adjacent cells in a sandwiched manner, and the cooling plates are the cooling plates according to any one of claims 1 to 8.

10. A vehicle comprising the battery pack of claim 9.

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