CN218498194U - Cooling plate structure and battery module - Google Patents

Abstract

The utility model provides a cooling plate structure and a battery module. The cooling plate structure includes an inflow channel, a cooling flow channel and an outflow channel. A plurality of cooling channels are arranged side by side. Both ends communicate with the inflow channel and the outflow channel respectively, and one end of two adjacent cooling flow channels on the same side communicates with the inflow channel and the outflow channel respectively. The coolant flows into the cooling channel from the inlet channel and flows out from the outlet channel to take away heat to cool down the battery. The ends of the two adjacent cooling channels on the same side can communicate with the inlet channel and the outlet channel respectively. , so that the cooling liquid in two adjacent cooling channels can flow in opposite directions, that is, the cooling liquid in two adjacent cooling channels can exchange heat, so that the temperature difference of the cooling liquid at different positions in the cooling channel becomes smaller, realizing the The battery is uniformly cooled in all directions to meet the consistency requirements of the battery temperature field.

Description

A cooling plate structure and battery module

technical field

The utility model relates to the technical field of automobile batteries, in particular to a cooling plate structure and a battery module.

Background technique

With the rapid development of the electric vehicle industry, the rapid development of power batteries has been brought about. When the battery is working, it will generate heat, which will bring hidden dangers to the safe use of the battery. Therefore, in order to ensure the normal operation of the battery, it is necessary to dissipate heat from the battery to maintain the temperature of the battery within a certain temperature range.

The current mainstream battery cooling method is liquid cooling, that is, a cooling plate is used to circulate the cooling liquid in the cooling plate to take away the heat generated by the battery and maintain the battery temperature within an optimal temperature range. With the increase of spontaneous combustion incidents of electric vehicles, people are paying more and more attention to the thermal runaway of power batteries. The large temperature difference of the battery itself will lead to the destruction of the battery structure or function, which is one of the factors causing the thermal runaway of the battery. While cooling the battery, the consistency requirements for the battery temperature field are becoming more and more stringent.

However, in the related art, when the coolant has just flowed into the channel of the cooling plate, the cooling effect is better when the temperature of the coolant is lower. After flowing for a certain distance, the cooling effect of the coolant becomes worse, resulting in a large temperature difference between different positions of the battery, and the battery cannot be cooled uniformly, and the consistency requirement of the battery temperature field cannot be met.

Utility model content

The problem solved by the utility model is how to achieve uniform cooling of the battery to meet the consistency requirement of the battery temperature field.

In order to solve the above problems, the utility model provides a cooling plate structure, which includes an inflow channel, a cooling channel and an outflow channel, a plurality of the cooling channels are arranged side by side, and the opposite ends of the cooling channels are respectively connected to the The inflow channel communicates with the outflow channel, and one end of two adjacent cooling channels on the same side communicates with the inflow channel and the outflow channel respectively

The technical effect of the utility model is that a plurality of cooling channels can be arranged side by side, and the two ends of each cooling channel can be respectively communicated with the inflow channel and the outflow channel, so that the cooling liquid can flow into the cooling channel from the inflow channel and The heat is taken away from the outflow channel to cool down the battery, and the ends of the two adjacent cooling channels on the same side can be connected to the inflow channel and the outflow channel respectively, so that the coolant in the two adjacent cooling channels It can flow in the opposite direction. For the convenience of expression, the adjacent two cooling channels are respectively defined as the first cooling channel and the second cooling channel. Similarly, the coolant in the second cooling channel can flow in a direction close to the connection between the first cooling channel and the inflow channel, so that the cooling liquid at the higher temperature in the first cooling channel The temperature field coupling can be carried out with the coolant at the lower temperature in the second cooling flow channel, that is, the cooling liquid in two adjacent cooling channels can exchange heat, so that the temperature difference of the cooling liquid at different positions in the cooling flow channel becomes smaller, realizing The battery is uniformly cooled in all directions to meet the consistency requirements of the battery temperature field.

Preferably, the cooling plate structure includes a first flow channel plate and a flat plate, the first flow channel plate is disposed opposite to the flat plate, the first flow channel plate is at least partially recessed toward a direction away from the flat plate, the flat plate and the flat plate The first flow channel plate encloses the inlet channel and the cooling channel.

Preferably, the cooling plate structure further includes a second flow channel plate, the second flow channel plate is installed on the side of the flat plate facing away from the first flow channel plate, and the second flow channel plate at least partially faces The direction away from the flat plate is recessed, the second flow channel plate and the flat plate are enclosed to form the outflow channel, the flat plate is provided with a first communication hole, and the outflow channel passes through the first communication hole and the The cooling channels are connected.

Preferably, the outflow channel includes a first outflow channel and a second outflow channel, the second flow channel plate and the flat plate form the first outflow channel, and the first outflow channel passes through The first communication hole communicates with the cooling flow channel, the first flow channel plate and the flat plate are surrounded to form the second outflow channel, the flat plate is provided with a second communication hole, and the first outflow channel The channel communicates with the second outflow channel through the second communication hole.

Preferably, the inflow channel extends along the edge of the first flow channel plate to form a U-shaped structure, the cooling channel is arranged in the U-shaped frame surrounded by the inflow channel, and the first outflow channel Intersect with the cooling flow channel at a calibrated angle, the second outflow channel and the U-shaped closed end of the inflow channel are arranged side by side, and the second outflow channel and the inflow channel are located at the The same side of the first runner plate.

Preferably, the cooling plate structure includes an inlet and an outlet, the inlet communicates with the inflow channel, the outlet communicates with the outflow channel, and the inlet is arranged at the U-shaped closed opening of the inflow channel end, the outlet is arranged in the second outflow channel.

Preferably, the inlet and the outlet are arranged adjacently.

Preferably, the cooling channel includes a plurality of sub-channels arranged side by side, and both ends of the plurality of sub-channels communicate with the inflow channel and the outflow channel respectively.

Preferably, a spoiler is provided at the connection between the plurality of sub-channels and the inflow channel.

The utility model also provides a battery module, which includes the above-mentioned cooling plate structure.

The beneficial effects of the battery module and the cooling plate structure of the utility model are the same, and will not be repeated here.

Description of drawings

Fig. 1 is a schematic diagram of the path of the inflow channel, cooling flow channel and outflow channel of a cooling plate structure provided by the embodiment of the present invention;

Fig. 2 is a schematic structural view of the first flow channel plate provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of a cooling plate structure provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of dismantling parts of a cooling plate structure provided by an embodiment of the present invention.

Explanation of reference signs:

1. Inflow channel; 2. Cooling channel; 21. Sub-runner; 3. Outflow channel; 31. First outflow channel; 32. Second outflow channel; 4. First runner plate; 41. Disturbance Flow block; 5, flat plate; 51, first communication hole; 52, second communication hole; 6, second flow channel plate; 7, inlet; 8, outlet; 9, inlet pipe; 10, outlet pipe.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

It should be noted that in the coordinate system XY provided in this article, the positive direction of the X-axis represents the right, the reverse direction of the X-axis represents the left, the positive direction of the Y-axis represents the top, and the downward direction of the Y-axis represents the front. At the same time, it should be noted that the terms "first" and "second" in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects, but not necessarily to describe a specific order or priority. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

Referring to Fig. 1 and Fig. 2, it is a cooling plate structure according to an embodiment of the present invention, which includes an inflow channel 1, a cooling channel 2 and an outflow channel 3, and a plurality of cooling channels 2 are arranged side by side. The opposite ends of the cooling channel 2 communicate with the inflow channel 1 and the outflow channel 3 respectively, and the ends of two adjacent cooling channels 2 on the same side are respectively connected to the inflow channel 1 communicates with the outflow channel 3.

Specifically, the cooling plate structure may include an inflow channel 1 , a cooling flow channel 2 and an outflow channel 3 . In this embodiment, the shape of the cooling plate structure can preferably be rectangular, and the inflow channel 1 can be arranged on the edge of the cooling plate structure. More specifically, in FIG. 1, the vertical direction is along the Y axis, and the left and right direction is along the X axis. The inflow channel 1 may be arranged on the upper edge of the cooling plate structure, and the two ends of the inflow channel 1 may extend along the upper edge to the left edge and the right edge of the cooling plate structure respectively.

A plurality of cooling channels 2 can be arranged in the middle of the cooling plate structure, that is, a plurality of cooling channels 2 are arranged in a frame surrounded by the inflow channel 1 . Multiple cooling channels 2 can be arranged side by side. Preferably, the cooling channels 2 can be parallel to the upper edge of the cooling plate structure, that is, the cooling channels 2 are arranged along the X axis, and the multiple cooling channels 2 are parallel to each other. The opposite ends of the cooling channel 2 can communicate with the inflow channel 1 and the outflow channel 3 respectively. In one embodiment, the battery is in contact with the cooling channel, so that the working medium can flow from the inflow channel 1 into the cooling channel 2 And flow out from the outflow channel 3 to exchange heat with the battery, and take away the heat to cool down the battery. Of course, the working medium may be cooling liquid or refrigerant. In this embodiment, cooling liquid is taken as an example for illustration.

One end of two adjacent cooling channels 2 on the same side can communicate with the inflow channel 1 and the outflow channel 3 respectively, so that the cooling liquid in the two adjacent cooling channels 2 can flow in opposite directions. For the convenience of expression, two adjacent cooling channels 2 are respectively defined as the first cooling channel and the second cooling channel, and the part of the inflow channel 1 located on the left edge of the cooling plate structure is defined as the first inflow channel, and the The part of the flow channel 1 located at the right edge of the cooling plate structure is defined as the second inflow channel.

Referring to Fig. 1, more specifically, the first cooling channel and the second cooling channel are the two lowermost cooling channels 2, and the first cooling channel is located above the second cooling channel, and the inflow channel 1 Refers to the part of the flow channel connecting the left end of the first cooling channel and the right end of the second cooling channel, and the outflow channel 3 refers to the part of the channel connecting the right end of the first cooling channel and the left end of the second cooling channel.

The left end of the first cooling flow channel can communicate with the first inflow channel, the right end of the first cooling flow channel can communicate with the outflow channel 3, the left end of the second cooling flow channel can communicate with the outflow channel 3, and the second cooling flow channel can communicate with the outflow channel 3. The right end of the channel can communicate with the second inflow channel, so that the coolant in the first cooling channel can flow from left to right, and the coolant in the second cooling channel can flow from right to left.

More specifically, the cooling liquid in the first cooling channel can flow toward the direction close to the connection between the second cooling channel and the inlet channel 1, and the cooling liquid in the second cooling channel can flow toward the direction close to the connection between the first cooling channel and the inlet channel 1. Flow channel 1 communicates in the direction of flow, that is, the first cooling channel communicates with the inlet channel 1 and the second cooling channel communicates with the outlet 8, and the second cooling channel communicates with the inlet channel 1. Adjacent to the connection between the first cooling channel and the outlet 8 .

And the temperature of the coolant at the place where the first cooling runner communicates with the inlet passage 1 is lower than the temperature of the coolant at the place where the second cooling runner communicates with the outlet passage 3, and the cooling fluid at the place where the second cooling runner communicates with the inlet passage 1 The temperature of the liquid is lower than the temperature of the coolant at the point where the first cooling channel communicates with the outflow channel 3, so that the cooling liquid in two adjacent cooling channels 2 can perform heat exchange, and after the heat exchange, cooling at different positions in the cooling channel The temperature difference of the liquid becomes smaller, and the battery can be cooled uniformly in all directions to meet the consistency requirements of the battery temperature field.

1 to 4, in some embodiments, the cooling plate structure includes a first flow channel plate 4 and a flat plate 5, the first flow channel plate 4 is arranged opposite to the flat plate 5, and the first flow channel The plate 4 is at least partly recessed toward a direction away from the flat plate 5 , and the flat plate 5 and the first flow channel plate 4 enclose the inlet flow channel 1 and the cooling flow channel 2 .

Specifically, the cooling plate structure may include a first flow channel plate 4 and a flat plate 5. In this embodiment, the shapes of the first flow channel plate 4 and the flat plate 5 may be square, and the size of the flat plate 5 is larger than that of the first flow channel plate 4. . The first flow channel plate 4 can be installed on the side of the flat plate 5. In this embodiment, the first flow channel plate 4 can be welded on the flat plate 5. In other embodiments, the first flow channel plate 4 can also be detachably installed on the flat plate 5 through bolts. on tablet 5.

At least part of the first runner plate 4 can be recessed toward the direction away from the plate 5 to form inlet channel grooves and cooling runner grooves, and the notches of the inlet channel grooves and the cooling runner grooves both face the plate 5 . When the first flow channel plate 4 is installed on the side of the plate 5, the plate 5 can cover the slots of the inlet channel groove and the cooling channel groove to form the inlet channel 1 and the cooling channel 2 respectively. The structure of the inlet channel 1 and the cooling channel 2 formed by the first channel plate 4 and the flat plate 5 is simple in structure, and when the flat plate 5 is installed on the cell assembly, the structural strength of the cell assembly can be increased. In other embodiments, the inlet channel 1 and the cooling channel 2 may also be formed by interconnecting pipes.

Referring to Fig. 3 and Fig. 4, in some embodiments, the cooling plate structure further includes a second flow channel plate 6, the second flow channel plate 6 is installed on the flat plate 5 and faces away from the first flow channel One side of the plate 4, the second flow channel plate 6 is at least partly recessed toward the direction away from the flat plate 5, and the outflow channel 3 includes the channel formed by the second flow channel plate 6 and the flat plate 5, so The plate 5 is provided with a first communication hole 51 , and the outflow channel 3 communicates with the cooling channel 2 through the first communication hole 51 .

Specifically, the cooling plate structure can also include a second flow channel plate 6. In this embodiment, the shape of the second flow channel plate 6 can also be square, and the size of the second flow channel plate 6 is smaller than that of the first flow channel plate 4. size. The second flow channel plate 6 can be installed on the side of the plate 5 facing away from the first flow channel plate 4 , that is, the first flow channel plate 4 and the second flow channel plate 6 are respectively installed on opposite sides of the plate 5 .

Likewise, in this embodiment, the second flow channel plate 6 can be welded on the flat plate 5 , and in other embodiments, the second flow channel plate 6 can also be detachably mounted on the flat plate 5 through bolts. At least part of the second flow channel plate 6 may be recessed toward a direction away from the flat plate 5 to form an outflow channel groove, and the notch of the outflow channel groove may face the flat plate 5 . When the second flow channel plate 6 is installed on the flat plate 5, the outflow channel 3 includes a channel formed by the flat plate 5 covering the notch of the outflow channel groove.

The plate 5 may be provided with a first communication hole 51. In this embodiment, a plurality of first communication holes 51 may be provided, and the plurality of first communication holes 51 may be arranged on the plate 5 corresponding to the outflow channel 3. position, so that the first communication hole 51 communicates with the outflow channel 3, and each first communication hole 51 can also be arranged on the plate 5 at a position corresponding to the cooling flow channel 2, so that a plurality of first communication holes 51 are respectively connected to the The plurality of cooling flow channels 2 communicate with each other in one-to-one correspondence. That is, the cooling channel 2 can communicate with the outflow channel 3 through the first communication hole 51 , the communication method is simple, and there is no need to use additional pipes to save materials.

Moreover, the inflow channel 1 and the outflow channel 3 are located on opposite sides of the plate 5, so that the inflow channel 1 and the outflow channel 3 do not intersect, which can facilitate the inflow channel 1, the outflow channel 3 and multiple cooling flows. Layout of Road 2.

1 to 4, in some embodiments, the outflow channel 3 includes a first outflow channel 31 and a second outflow channel 32, and the second flow channel plate 6 and the flat plate 5 are enclosed The first outflow channel 31 is formed, the first outflow channel 31 communicates with the cooling flow channel 2 through the first communication hole 51, and the first flow channel plate 4 and the flat plate 5 encircle to form the The second outflow channel 32, the plate 5 is provided with a second communication hole 52, and the first outflow channel 31 communicates with the second outflow channel 32 through the second communication hole 52.

Specifically, the outflow channel 3 may include a first outflow channel 31 and a second outflow channel 32. In this embodiment, two first outflow channels 31 and one second outflow channel 32 may be provided. The first outflow channel 31 is respectively arranged on the left and right edges of the cooling plate structure, and a second outflow channel 32 is arranged on the upper or lower edge of the cooling plate structure, and the second outflow channel 32 can be located in the two first outflow channels 31 , opposite ends of the second outflow channel 32 can communicate with the two first outflow channels 31 respectively.

In this embodiment, two second flow channel plates 6 can be provided, and the second flow channel plate 6 and the flat plate 5 are surrounded to form a first outflow channel 31, and the first outflow channel 31 passes through the first connected empty cooling channel 2 connected. Similarly, the first outflow channel 31 and the inflow channel 1 are respectively located on opposite sides of the plate 5, so that the inflow channel 1 and the outflow channel 3 do not intersect to facilitate the inflow channel 1, the outflow channel 3 and the Arrangement of multiple cooling channels 2.

In this embodiment, the first flow channel plate 4 and the flat plate 5 can be surrounded to form the second outflow channel 32, and the second communication hole 52 can be provided on the plate 5, and the first outflow channel 31 can communicate with the second communication hole 52. The second outflow channel 32 is in communication. The second outflow channel 32 can be located on the same side of the plate 5 as the inflow channel 1 and a plurality of cooling channels 2, without the isolation of the plate 5, it is convenient for the second outflow channel 32 to connect with the inflow channel 1 and the cooling channels 2 for heat exchange, so that the temperature difference of the coolant in the second outflow channel 32 , the inflow channel 1 and the cooling flow channel 2 is further reduced, and the battery can be further cooled evenly.

1 and 4, in some embodiments, the inlet channel 1 extends along the edge of the first channel plate 4 to form a U-shaped structure, and the cooling channel 2 is arranged in the inlet channel 1, the first outflow channel 31 intersects with the cooling channel 2 at a nominal angle, and the second outflow channel 32 and the U-shaped closed end of the inflow channel 1 They are arranged side by side, and the second outflow channel 32 and the inflow channel 1 are located on the same side of the first flow channel plate 4 .

Specifically, the inlet channel 1 can be arranged on the upper edge, the left edge and the right edge of the first flow channel plate 4, and the opposite ends of the inlet channel 1 can be respectively located on the left edge and the right edge of the first flow channel plate 4, so that The inlet channel 1 may form a U-shaped structure, and the cooling flow channel 2 may be arranged in the U-shaped frame formed by the inlet channel 1 .

The first outflow channel 31 can intersect with the cooling channel 2 at a certain angle, preferably, the first outflow channel 31 can be perpendicular to the cooling channel 2, that is, the first outflow channel 31 and the cooling channel 2 are at 90 degrees angle set. The second outflow channel 32 can be arranged on the upper edge of the first flow channel plate 4 , and the second outflow channel 32 is parallel to the U-shaped closed end of the inflow channel 1 .

The inflow channel 1 and the outflow channel 3 can be arranged adjacently. In the cooling plate structure, the temperature of the coolant in the inflow channel 1 is the lowest, while the temperature of the coolant in the outflow channel 3 is the highest. Channel 1 and outlet channel 3 are adjacently arranged, which can make the temperature field coupling between the lowest temperature area and the highest temperature area in the cooling plate structure, that is, the cooling liquid in the inflow channel 1 and the cooling liquid in the outflow channel 3 can generate heat. The exchange maintains temperature consistency, which can further cool down the battery evenly.

Referring to FIG. 1 , in some embodiments, an inlet 7 and an outlet 8 are included, the inlet 7 communicates with the inflow channel 1 , the outlet 8 communicates with the outflow channel 3 , and the inlet 7 It is arranged at the U-shaped closed end of the inlet channel 1 , and the outlet 8 is arranged at the second outlet channel 32 .

Specifically, the cooling plate structure may further include an inlet 7 and an outlet 8 , and the inlet 7 may be arranged at the U-shaped closed end of the inlet channel 1 , that is, the inlet 7 is arranged at the upper edge of the inlet channel 1 at the upper edge of the first flow channel plate 4 . Preferably, the inlet is arranged in the middle of the inflow channel 1, so that the distance traveled by the cooling liquid after flowing into the inflow channel 1 and before flowing into each cooling flow channel 2 is equal, that is, the cooling liquid flowing into each cooling flow channel 2 The temperature is equal, and the battery can be further cooled evenly.

The outlet 8 can also communicate with the middle position of the second outflow channel 32, that is, after the coolant flows from the cooling channel 2 into the outflow channel 3, it can flow out of the cooling plate structure from the outlet 8 to complete a cooling cycle after flowing for an equal distance. The temperature of the cooling liquid collected at the outlet 8 can be made close to the same, and the temperature of the battery can be further uniformly lowered.

In this embodiment, the inlet 7 can be connected with the inlet pipe 9, and the outlet 8 can be connected with the outlet pipe 10. The inlet pipe 9 can be set to facilitate the cooling liquid to flow into the inlet channel 1, and the outlet pipe 10 can be set to facilitate the cooling liquid from Outflow channel 3 flows out.

Referring to Fig. 1 and Fig. 4, in some embodiments, the inlet 7 and the outlet 8 are arranged adjacently.

Specifically, the inlet 7 and the outlet 8 can be arranged adjacent to each other, so that the cooling liquid at the inlet 7 and the outlet 8 can exchange heat, which can reduce the temperature difference between the cooling liquid flowing into the cooling plate structure and the cooling plate flowing out of the cooling plate structure, and can further improve the temperature of the battery. Cool down evenly.

1 and 2, in some embodiments, the cooling channel 2 includes a plurality of sub-channels 21 arranged side by side, and the two ends of the plurality of sub-channels 21 communicate with the inlet flow channel respectively. Channel 1 communicates with the outflow channel 3 .

Specifically, the cooling channel 2 includes a plurality of sub-channels 21 arranged side by side, the plurality of sub-channels 21 can be arranged along the X-axis direction, and the plurality of sub-channels 21 are parallel to each other, and the opposite ends of each sub-channel 21 can be respectively It communicates with the inflow channel 1 and the outflow channel 3. In this embodiment, each cooling channel 2 is provided with three sub-channels 21 , and in other embodiments, each cooling channel 2 may be provided with other numbers of sub-channels 21 . The cooling channel 2 is provided with a plurality of sub-channels 21 to increase the contact area between the cooling liquid and the battery, and to improve the cooling efficiency of the cooling plate structure.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , in some embodiments, a spoiler 41 is provided at the connection between the plurality of sub-channels 21 and the inflow channel 1 .

Specifically, a spoiler block 41 can be provided at the place where the plurality of sub-runners 21 communicate with the inlet channel 1, that is, the spoiler block 41 can be arranged at the place where the inlet channel 1 communicates with the cooling channel 2, and the spoiler block 41 can make the cooling channel 2 communicate with each other. The coolant in the flow channel 1 evenly flows into each sub-channel 21, which can ensure the balance of the flow of coolant in each sub-channel 21, that is, ensure that the temperature of the coolant in each sub-channel 21 is the same, and can further uniformly cool the battery. Cool down.

More specifically, when three sub-runners 21 are provided, the spoiler block 41 can be arranged directly opposite to the middle sub-runner 21, and the distance between the spoiler block 41 and the upper and lower two sub-runners 21 can be equal, so that the cooling liquid It can evenly flow into the three sub-channels 21 .

A battery module according to another embodiment of the present invention includes the above-mentioned cooling plate structure.

Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims (10)

1. The utility model provides a cooling plate structure, its characterized in that, is including inflow passageway (1), cooling runner (2) and outflow passageway (3), and is a plurality of cooling runner (2) set up side by side, the relative both ends of cooling runner (2) respectively with inflow passageway (1) with outflow passageway (3) intercommunication, and adjacent two cooling runner (2) be located the one end of homonymy respectively with inflow passageway (1) with outflow passageway (3) intercommunication.

2. The cooling plate structure according to claim 1, characterized by comprising a first flow channel plate (4) and a flat plate (5), wherein the first flow channel plate (4) is disposed opposite to the flat plate (5), the first flow channel plate (4) is at least partially recessed in a direction away from the flat plate (5), and the flat plate (5) and the first flow channel plate (4) surround to form the inlet channel (1) and the cooling flow channel (2).

3. The cooling plate structure according to claim 2, further comprising a second flow channel plate (6), wherein the second flow channel plate (6) is installed on a side of the flat plate (5) opposite to the first flow channel plate (4), the second flow channel plate (6) is at least partially recessed toward a direction away from the flat plate (5), the outflow channel comprises a channel surrounded by the second flow channel plate (6) and the flat plate (5), the flat plate (5) is provided with a first communication hole (51), and the channel surrounded by the second flow channel plate (6) and the flat plate (5) is communicated with the cooling channel (2) through the first communication hole (51).

4. The cooling plate structure according to claim 3, characterized in that the outflow channel (3) comprises a first outflow channel (31) and a second outflow channel (32), the second outflow channel (6) and the flat plate (5) surround to form the first outflow channel (31), the first outflow channel (31) is communicated with the cooling channel (2) through the first communication hole (51), the first outflow channel (4) and the flat plate (5) surround to form the second outflow channel (32), the flat plate (5) is provided with a second communication hole (52), and the first outflow channel (31) is communicated with the second outflow channel (32) through the second communication hole (52).

5. The cooling plate structure according to claim 4, characterized in that the inlet channel (1) extends along the edge of the first channel plate (4) to form a U-shaped structure, the cooling channel (2) is disposed in a U-shaped frame surrounded by the inlet channel (1), the first outlet channel (31) and the cooling channel (2) are disposed in a crossed manner at a predetermined angle, the second outlet channel (32) and the U-shaped closed end of the inlet channel (1) are disposed side by side, and the second outlet channel (32) and the inlet channel (1) are located on the same side of the first channel plate (4).

6. A cooling plate structure according to claim 5, characterized by comprising an inlet (7) and an outlet (8), said inlet (7) communicating with said inlet channel (1), said outlet (8) communicating with said outlet channel (3), and said inlet (7) being arranged at the U-shaped closed end of said inlet channel (1), said outlet (8) being arranged at said second outlet channel (32).

7. Cooling plate structure according to claim 6, characterized in that the inlet (7) and the outlet (8) are arranged adjacently.

8. The cooling plate structure according to claim 1, characterized in that the cooling flow channel (2) comprises a plurality of sub-flow channels (21) arranged side by side, and both ends of the plurality of sub-flow channels (21) are respectively communicated with the inflow channel (1) and the outflow channel (3).

9. The cooling plate structure according to claim 8, characterized in that a plurality of the sub-flow channels (21) are provided with a flow disturbing block (41) at the connection with the inlet channel (1).

10. A battery module comprising the cooling plate structure according to any one of claims 1 to 9.

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