CN220895632U - Liquid cooling plate and battery module - Google Patents

Abstract

The utility model provides a liquid cooling plate and a battery module, wherein the liquid cooling plate is used for cooling a battery cell and comprises an upper plate, a lower plate and a cooling device, the cooling device is arranged between the upper plate and the lower plate and comprises a plurality of cooling flow channels, the cooling flow channels are mutually communicated to form a cooling loop, and the cooling loop is used for cooling medium to flow; wherein, be formed with the accommodation chamber between upper plate and the hypoplastron, cooling device locates in the accommodation chamber. The utility model aims to solve the problems that the existing battery module has poor heat preservation effect and risk of liquid leakage.

Description

Liquid cooling plate and battery module

Technical Field

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

Background

Thermal management has been the focus of new energy automobiles; as the energy density and the power density of the power battery of the new energy automobile are higher and higher, the heat productivity of the battery is increased, and a liquid cooling heat dissipation system with the characteristics of high cooling speed, large specific volume, high heat exchange coefficient and the like gradually becomes a mainstream heat dissipation mode; the operation principle of the liquid cooling system is that after the cooling liquid in the liquid cooling plate is contacted with the surface of the battery, the generated heat is brought to the outside of the battery system, so that the value of cooling the battery is achieved; therefore, a liquid cooling plate as a core component of the liquid cooling system becomes particularly important; in the related art, the liquid cooling plate mainly comprises a runner plate, an upper plate, a water inlet, a water outlet and the like, the runner plate and the upper cover plate are made of aluminum generally, heat conduction is fast, heat generated by the battery core can be quickly transferred to cooling liquid, heat preservation of the battery is not facilitated, and the risk of short circuit and fire is also caused when leakage occurs.

Disclosure of utility model

The embodiment of the utility model provides a liquid cooling plate and a battery module, and aims to solve the problems that the existing battery module is poor in heat preservation effect and has the risk of liquid leakage.

In a first aspect, embodiments of the present utility model provide a liquid cooling plate for cooling a battery cell, including:

Upper and lower plates, and

The cooling device is arranged between the upper plate and the lower plate and comprises a plurality of cooling flow channels which are communicated with each other to form a cooling loop, and the cooling loop is used for cooling medium to flow;

Wherein, be formed with the accommodation chamber between upper plate and the hypoplastron, cooling device locates in the accommodation chamber.

In one embodiment, the cooling device comprises a cooling pipeline, the cooling pipeline comprises a plurality of pipe sections and a plurality of connecting sections, the pipe sections are arranged at intervals, and each connecting section is connected between two adjacent pipe sections so as to enable the pipe sections to be connected end to end;

wherein a plurality of the pipe sections and a plurality of the connecting sections constitute the cooling flow passage.

In one embodiment, a clearance groove is formed between two adjacent pipe sections;

the liquid cooling plate further comprises a filling piece, and the filling piece is filled in the clearance groove.

In one embodiment, the cooling device comprises a runner plate, the runner plate comprises a first surface close to the upper plate and a second surface far away from the upper plate, a plurality of grooves recessed from the first surface to the second surface are formed on the runner plate, and the grooves are communicated with each other;

The upper plate cover is arranged on the first surface, and the cooling flow channels are formed between the grooves and the upper plate.

In an embodiment, the structure reinforcing plate further comprises a structure reinforcing plate, wherein a plurality of avoidance through holes corresponding to the grooves are formed in the structure reinforcing plate, and the avoidance through holes are clamped with the walls of the grooves so as to fix the structure reinforcing plate on the runner plate.

In an embodiment, the flow channel plate further comprises a first positioning part extending along a first direction and a second positioning part extending along a second direction, wherein the first direction and the second direction are intersected;

The upper plate is provided with a first matching part and a second matching part which are respectively opposite to the first positioning part and the second positioning part, the first positioning part is fixed with the first matching part, and the second positioning part is fixed with the second matching part.

In an embodiment, the first positioning portion and the second positioning portion divide the flow passage into four cooling areas, and each groove is distributed in the corresponding cooling area;

The runner plate further comprises a plurality of connecting grooves, wherein each connecting groove is arranged close to the end part of the first positioning part or the end part of the second positioning part and corresponds to two grooves.

In an embodiment, the accommodating cavity is formed on the lower plate, the lower plate comprises a bottom plate and a side wall extending from the side edge of the bottom plate in a bending manner, the edge of one end of the side wall away from the bottom plate is turned outwards to form a mounting wall, and the mounting wall is fixedly connected with the upper plate.

In an embodiment, the cooling device further comprises a heat conducting layer, and the heat conducting layer is arranged between the cooling device and the upper plate.

In a second aspect, an embodiment of the present utility model provides a battery module including:

a plurality of electrical cores;

The tray is internally provided with a plurality of mounting cavities, and a plurality of battery cores are correspondingly mounted in the plurality of mounting cavities; and

The liquid cooling plates are arranged on the plurality of the battery cells in a covering mode and comprise an upper plate, a lower plate and a cooling device, and the cooling device is arranged between the upper plate and the lower plate; wherein, be formed with the accommodation chamber between upper plate and the hypoplastron, cooling device locates in the accommodation chamber.

The embodiment of the utility model has the beneficial effects that:

In the technical scheme of the utility model, the cooling device is arranged between the upper plate and the lower plate, and a cooling medium flows between the cooling devices, so that leakage of the cooling medium can be avoided, the overall safety performance is improved, and furthermore, the upper plate is in contact with the battery core, heat generated by the battery core is transferred to the cooling device and is taken away by the cooling medium in the cooling device, and rapid cooling is realized; meanwhile, the cooling device is arranged between the upper plate and the lower plate, the upper plate and the lower plate play a role in heat preservation, the cooling device is prevented from losing too fast, the upper plate and the lower plate can play a role in secondary protection, even if the cooling device is damaged, the upper plate and the lower plate can limit cooling medium, and the cooling medium is prevented from contacting with the battery cell to cause a short circuit problem.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a first embodiment of a liquid cooling plate according to the present utility model;

FIG. 2 is an exploded view of the liquid cooling panel of FIG. 1 (without packing);

FIG. 3 is a schematic view of the structure of the lower plate of FIG. 1;

FIG. 4 is a schematic view of the cooling device of FIG. 1 (including a filler element);

FIG. 5 is a schematic diagram of a second embodiment of a liquid cooling plate according to the present utility model

FIG. 6 is an exploded view of the liquid cooling plate of FIG. 5 (excluding the lower plate);

FIG. 7 is a schematic view of the upper plate in FIG. 5

Fig. 8 is a schematic view of the flow field plate of fig. 5.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name
				100	Liquid cooling plate	3422	Second groove
1	Upper plate	35	Structural reinforcement plate
				11	A first mating part	351	Avoidance through hole
12	Second mating part	36	First positioning part
				2	Lower plate	37	Second positioning part
21	Bottom plate	38	Connecting groove
				22	Side wall	381	First connecting groove
23	Mounting wall	382	Second connecting groove
				3	Cooling device	383	Third connecting groove
31	Pipe section	4	Accommodating cavity
				32	Connecting section	5	Filling member
33	Gap groove	6	Heat conducting layer
				34	Flow passage plate	7	A first cooling zone
341	Groove	8	A second cooling zone
				3411	First groove

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

Example 1

In the related art, the liquid cooling plate mainly comprises a runner plate, an upper plate, a water inlet, a water outlet and the like, the runner plate and the upper cover plate are made of aluminum generally, heat conduction is fast, heat generated by the battery core can be quickly transferred to cooling liquid, heat preservation of the battery is not facilitated, and the risk of short circuit and fire is also caused when leakage occurs.

In view of this, the present utility model proposes a liquid cooling plate 100 for cooling a battery cell, and fig. 1 to fig. 4 are schematic structural diagrams of the liquid cooling plate 100 provided by the present utility model, where the liquid cooling plate 100 provided by the present utility model has high cooling efficiency, can also keep temperature, and has a small risk of liquid leakage; the liquid cooling plate 100 will be described in detail with reference to the main drawings.

Referring to fig. 1 and 2, the liquid cooling plate 100 includes an upper plate 1, a lower plate 2, and a cooling device 3; the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, the cooling device 3 comprises a plurality of cooling flow channels, and the cooling flow channels are mutually communicated to form a cooling loop, and the cooling loop is used for cooling medium to flow; wherein, a containing cavity 4 is formed between the upper plate 1 and the lower plate 2, and the cooling device 3 is arranged in the containing cavity 4.

In the technical scheme of the utility model, the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, and a cooling medium flows between the cooling devices 3, so that leakage of the cooling medium can be avoided, the overall safety performance is improved, and furthermore, the upper plate 1 is in contact with a battery cell, heat generated by the battery cell is transferred to the cooling device 3 and is taken away by the cooling medium in the cooling device 3, and rapid cooling is realized; meanwhile, the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, the upper plate 1 and the lower plate 2 play a role in heat preservation for the cooling device 3, the phenomenon that the cooling device 3 loses temperature too fast is avoided, the upper plate 1 and the lower plate 2 can play a role in secondary protection for the cooling device 3, even if the cooling device 3 is damaged, the upper plate 1 and the lower plate 2 can limit cooling medium, and the cooling medium is prevented from contacting with an electric core, so that a short circuit problem is caused.

It should be noted that, considering the above-mentioned situation, the material of the upper plate 1 is preferably modified aluminum in the embodiment, considering that the liquid cooling plate 100 needs to have both cooling and heat preservation functions (i.e. not only needs to take away the excessive heat generated by the battery cell, but also needs to ensure that the battery cell is at a proper temperature to avoid losing temperature); specifically, the modified aluminum comprises nylon-66, aluminum oxide and aluminum hydroxide, the specific proportion and the specific preparation process are set conventionally in the art, and the material of the lower plate 2 is PVC (polyvinyl chloride); compared with the traditional aluminum plate, the modified aluminum is adopted as the material of the upper plate 1, so that the heat conductivity of the upper plate 1 can be improved, the electric core is rapidly cooled, the PVC is adopted as the material of the lower plate 2, the heat preservation effect can be achieved, and the temperature loss is avoided.

The cooling device 3 includes a cooling pipe, the specific structure of which is not limited, in this embodiment, the cooling pipe adopts a serpentine shape in consideration of the cooling efficiency, and in particular, referring to fig. 2 and 4, the cooling pipe includes a plurality of pipe sections 31 and a plurality of connecting sections 32, the plurality of pipe sections 31 are arranged at intervals, each connecting section 32 is connected between two adjacent pipe sections 31 so as to connect a plurality of pipe sections 31 end to end, where a plurality of pipe sections 31 and a plurality of connecting sections 32 form the cooling flow channel. The upper plate 1 is formed with an outlet and an inlet, and two pipe sections 31 positioned at the outermost side are respectively connected with the inlet and the outlet, so as to form a cooling circuit, and the purpose of arranging the cooling pipeline in a snake shape is to increase the contact area between the cooling pipeline and the upper plate 1 and improve the cooling efficiency.

Further, a clearance groove 33 is formed between two adjacent pipe sections 31; the liquid cooling plate 100 further includes a filler 5, and the filler 5 is filled in the gap groove 33. Specifically, in this embodiment, the filling member 5 is a foam rubber, and the foam rubber is filled in the gap groove 33, so that the cooling device 3 can be fixed, damage caused by shaking, collision, extrusion and other problems of the cooling device 3 is avoided, and a liquid leakage condition occurs, so that the safety factor of the liquid cooling plate 100 is improved; another purpose is to enhance the strength of the upper plate 1, avoid bending deformation of the upper plate 1, squeeze the upper plate to the liquid cooling pipeline, and in addition, the filler 5 can also ensure uniform heat transfer, so that the battery cell can uniformly dissipate heat, and damage to the battery cell due to nonuniform heat dissipation is avoided.

Referring to fig. 2 and 3, the arrangement of the accommodating cavity 4 is not limited, specifically, in an embodiment, the accommodating cavity 4 may be formed on the upper plate 1, and the cooling device 3 is in direct contact with the upper plate 1; in another embodiment, a first accommodating groove is formed on the working, a second accommodating groove is formed on the lower plate 2, and when the upper plate 1 is connected with the lower plate 2, the first accommodating groove and the second accommodating groove are communicated to form the accommodating cavity 4; in a further embodiment, the accommodating cavity 4 is formed on the lower plate 2, the cooling device 3 is placed in the accommodating cavity 4, and the upper plate 1 is covered on the lower plate 2; further, the connection manner of the upper plate 1 and the lower plate 2 is not limited, so long as the fixing can be achieved, specifically, the lower plate 2 includes a bottom plate 21 and a side wall 22 extending from a side edge of the bottom plate 21 in a bending manner, an edge of one end of the side wall 22 away from the bottom plate 21 is turned outwards to form a mounting wall 23, a plurality of first rivet holes are formed on the mounting wall 23, a plurality of second rivet holes corresponding to the first rivet holes are formed on an edge of the upper plate 1, in an actual mounting process, the upper plate 1 is covered on the lower plate 2, and at the same time, each first rivet hole corresponds to the corresponding second rivet hole, and rivets sequentially pass through the first rivet holes and the second rivet holes to fixedly connect the mounting wall 23 to the upper plate 1, thereby achieving the fixing of the upper plate 1 and the lower plate 2; furthermore, in order to ensure tightness and reduce the possibility of liquid leakage, the end face of the mounting wall 23 facing the upper plate 1 is coated with sealant, and the sealing effect between the upper plate 1 and the lower plate 2 is realized through the sealant, so that the possibility of liquid leakage is reduced and the safety performance is improved.

Further, with continued reference to fig. 2, the liquid cooling plate 100 further includes a heat conducting layer 6, and the heat conducting layer 6 is disposed between the cooling device 3 and the upper plate 1. The heat conducting layer 6 can rapidly transfer heat generated by the battery cell to the cooling device 3, so that rapid cooling is realized.

The specific shape of the liquid cooling plate 100 is not limited, and may be selected according to the actual application scenario, for example, the cross section of the liquid cooling plate 100 may be square, rectangular, pentagonal, or circular.

The utility model also provides a battery module, which comprises a plurality of battery cells, a tray and a liquid cooling cover plate, wherein a plurality of mounting cavities are formed in the tray, the battery cells are correspondingly mounted in the plurality of mounting cavities, and the liquid cooling plate 100 is covered on the battery cells; the specific structure of the liquid cooling plate 100 refers to the above embodiments, and since the battery pack adopts all the technical solutions of all the embodiments, the battery pack has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

Example two

In the related art, the upper plate and the lower plate are made of aluminum generally, the thickness is set to be about 1mm in consideration of heat transfer efficiency, the integral strength of the liquid cooling plate is not too high, and in a power battery adopting a CTP scheme, the liquid cooling plate is likely to deform and distort due to the fact that the battery cell is not bound by an end plate, a side plate and a steel belt, and the normal operation of a liquid cooling system and even a battery pack is affected.

In view of this, the present utility model proposes a liquid cooling plate 100, and fig. 5 to 8 are schematic structural diagrams of the liquid cooling plate 100 according to the present utility model; the liquid cooling plate 100 provided in this embodiment can increase the strength of the upper plate 1 and the lower plate 2, reduce the risk of deformation of the liquid cooling plate 100, and enable the battery module to work normally; the liquid cooling plate 100 will be described in detail with reference to the main drawings.

Referring to fig. 5 and 6, the liquid cooling plate 100 includes an upper plate 1, a lower plate 2, and a cooling device 3; the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, the cooling device 3 comprises a plurality of cooling flow channels, and the cooling flow channels are mutually communicated to form a cooling loop, and the cooling loop is used for cooling medium to flow; wherein, a containing cavity 4 is formed between the upper plate 1 and the lower plate 2, and the cooling device 3 is arranged in the containing cavity 4.

In the technical scheme of the utility model, the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, and a cooling medium flows between the cooling devices 3, so that leakage of the cooling medium can be avoided, the overall safety performance is improved, and furthermore, the upper plate 1 is in contact with a battery cell, heat generated by the battery cell is transferred to the cooling device 3 and is taken away by the cooling medium in the cooling device 3, and rapid cooling is realized; meanwhile, the cooling device 3 is arranged between the upper plate 1 and the lower plate 2, the upper plate 1 and the lower plate 2 play a role in heat preservation for the cooling device 3, the phenomenon that the cooling device 3 loses temperature too fast is avoided, the upper plate 1 and the lower plate 2 can play a role in secondary protection for the cooling device 3, even if the cooling device 3 is damaged, the upper plate 1 and the lower plate 2 can limit cooling medium, and the cooling medium is prevented from contacting with an electric core, so that a short circuit problem is caused.

Referring to fig. 6 and 8, in the present embodiment, the cooling device 3 includes a flow channel plate 34, and a cooling medium flows in the flow channel plate 34 to replace heat generated by the battery cell; specifically, the flow channel plate 34 includes a first surface close to the upper plate 1 and a second surface far away from the upper plate 1, and a plurality of grooves 341 are formed on the flow channel plate 34 and recessed from the first surface toward the second surface, and the plurality of grooves 341 are mutually communicated; wherein, the upper plate 1 is covered on the first surface, and the plurality of grooves 341 and the upper plate 1 form the cooling circuit. Further, in view of the problems of leakage, the runner plate 34 and the upper plate 1 are connected by welding, and in the actual production process, the runner plate 34 and the upper plate 1 are directly welded together, and the cooling medium flows in the upper plate 1 and the groove 341, so as to realize the heat exchange function.

It should be noted that, the thickness of the groove 341 is greater than the thickness of the flow channel plate 34, so that a gap (a surface of the reinforcing plate facing away from the upper plate 1) is formed between two grooves 341, and in consideration of not affecting the overall thickness of the liquid cooling plate 100, the strength of the liquid cooling plate 100 is improved by using the gap between two grooves 341, that is, a reinforcing structure is disposed in the gap, so that the overall strength is improved; specifically, in one embodiment, the liquid cooling plate 100 further includes a plurality of reinforcing blocks, each of which is correspondingly filled in a gap formed between two of the grooves 341 to achieve a reinforcing effect, and more specifically, the reinforcing blocks are fixed in the gap between two of the grooves 341 by welding; in another embodiment, the liquid cooling plate 100 further includes a structural reinforcing plate 35, and a plurality of avoidance holes 351 corresponding to the grooves 341 are formed on the structural reinforcing plate 35, and the avoidance holes 351 are clamped with the walls of the grooves 341, so as to fix the structural reinforcing plate 35 on the flow channel plate 34. As a preferred embodiment, the strength of the liquid cooling plate 100 is reinforced by the structural reinforcing plate 35, and the structural reinforcing plate 35 is easier to assemble than the arrangement mode of the reinforcing block, and can be directly clamped on the flow channel plate 34 without performing welding operation.

Referring to fig. 7 and 8, in order to ensure the connection strength between the flow channel plate 34 and the upper plate 1 and ensure that the flow channel plate 34 does not separate from the upper plate 1, in this embodiment, the flow channel plate 34 further includes a first positioning portion 36 extending along a first direction and a second positioning portion 37 extending along a second direction, where the first direction and the second direction intersect; the upper plate 1 is formed with a first engaging portion 11 and a second engaging portion 12 which are respectively opposite to the first positioning portion 36 and the second positioning portion 37, the first positioning portion 36 is fixed to the first engaging portion 11, and the second positioning portion 37 is fixed to the second engaging portion 12. More specifically, the first positioning portion 36 is a first welding bead, the second positioning portion 37 is a second welding bead, the first fitting portion 11 is a third welding bead, the second fitting portion 12 is a fourth welding bead, the first welding bead is fitted with the third welding bead, and the second welding bead is fitted with the fourth welding bead, and welded together, so as to strengthen the connection strength between the runner plate 34 and the upper plate 1; further, in view of the overall layout, the first positioning portion 36 and the second positioning portion 37 are preferably disposed vertically to each other in the water surface, and similarly, the first engaging portion 11 and the second engaging portion 12 are preferably disposed vertically to each other in the water surface.

Further, referring to fig. 8, the first positioning portion 36 and the second positioning portion 37 divide the flow channel into four cooling areas, and each of the grooves 341 is distributed in the corresponding cooling area; the flow field plate 34 further includes a plurality of connecting grooves 38, and each connecting groove 38 is disposed adjacent to an end of the first positioning portion 36 or the second positioning portion 37, and together with two corresponding grooves 341. Specifically, in this embodiment, the number of the connecting grooves 38 is four, the four connecting grooves 38 are respectively located at the four edges of the flow channel plate 34 and do not overlap with the first positioning portion 36 and the second positioning portion 37, the four connecting grooves 38 are preferably directly connected to each other in consideration of the flow problem of the cooling medium, for convenience of description, the four cooling areas are respectively a first cooling area 7, a second cooling area 8, a third cooling area and a fourth cooling area, the grooves 341 located in the cooling areas are respectively a first groove 3411, a second groove 3422, a third groove and a fourth groove, the four connecting grooves 38 are respectively a first connecting groove 381, a second connecting groove 382, a third connecting groove 383 and a fourth connecting groove, taking the first cooling area 7 and the second cooling area 8 as an example, describing the connection manner of the recess 341 and the connection groove 38, in particular, the connection grooves located in the first cooling region 7 and the second cooling region 8 are a first connection groove 381, a second connection groove 382 and a third connection groove 383, respectively, the first connection groove 381 connects the first cooling region 7 and the second cooling region 8, respectively, while the second connection groove 382 and the third connection groove 383 are located at both sides of the first cooling region 7 and the second cooling region 8, in particular, one end of the first recess 3411 communicates with the third connection groove 383, the other end communicates with the first connection groove 381, one end of the second recess 3422 communicates with the first connection groove 381, the other end communicates with the second connection groove 382, the communication of the first recess 3411 and the second recess 3422 is achieved through the first connection groove 381, thereby realizing the flow of the cooling medium; the connection manner between the other grooves 341 and the connection grooves 38 is the same as the above manner, and will not be described in detail here; further, the water inlet and the water outlet may be formed in any one of the connection grooves 38.

Still further, each of the grooves 341 includes a plurality of groove segments and a plurality of connecting groove segments, the plurality of groove segments being arranged at intervals, each of the connecting groove segments being connected between two adjacent groove segments so that a plurality of pipe segments 31 are connected end to end, thereby forming a serpentine shape, so arranged for the purpose of improving cooling efficiency.

The connection manner between the upper plate 1 and the lower plate 2 may be the first embodiment, and will not be described in detail herein.

The utility model also provides a battery module, which comprises a plurality of battery cells, a tray and a liquid cooling cover plate, wherein a plurality of mounting cavities are formed in the tray, the battery cells are correspondingly mounted in the plurality of mounting cavities, and the liquid cooling plate 100 is covered on the battery cells; the specific structure of the liquid cooling plate 100 refers to the above embodiments, and since the battery pack adopts all the technical solutions of all the embodiments, the battery pack has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (10)

1. A liquid cooling plate for cooling a battery cell, comprising:

Upper and lower plates, and

The cooling device is arranged between the upper plate and the lower plate and comprises a plurality of cooling flow channels which are communicated with each other to form a cooling loop, and the cooling loop is used for cooling medium to flow;

Wherein, be formed with the accommodation chamber between upper plate and the hypoplastron, cooling device locates in the accommodation chamber.

2. The liquid cooling plate according to claim 1, wherein the cooling device comprises a cooling pipeline, the cooling pipeline comprises a plurality of pipe sections and a plurality of connecting sections, the plurality of pipe sections are arranged at intervals, and each connecting section is connected between two adjacent pipe sections so as to enable the plurality of pipe sections to be connected end to end;

wherein a plurality of the pipe sections and a plurality of the connecting sections constitute the cooling flow passage.

3. The liquid cooling plate according to claim 2, wherein a clearance groove is formed between two adjacent pipe sections;

the liquid cooling plate further comprises a filling piece, and the filling piece is filled in the clearance groove.

4. The liquid cooling plate according to claim 1, wherein the cooling device comprises a flow channel plate, the flow channel plate comprises a first surface close to the upper plate and a second surface far away from the upper plate, a plurality of grooves recessed from the first surface to the second surface are formed in the flow channel plate, and the grooves are communicated with each other;

The upper plate cover is arranged on the first surface, and the cooling flow channels are formed between the grooves and the upper plate.

5. The liquid cooling plate according to claim 4, further comprising a structural reinforcing plate, wherein a plurality of avoidance through holes corresponding to the grooves are formed in the structural reinforcing plate, and the avoidance through holes are clamped with the walls of the grooves so as to fix the structural reinforcing plate on the flow channel plate.

6. The liquid cooling plate according to claim 4, wherein the flow field plate further comprises a first positioning portion extending in a first direction and a second positioning portion extending in a second direction, the first direction and the second direction intersecting each other;

The upper plate is provided with a first matching part and a second matching part which are respectively opposite to the first positioning part and the second positioning part, the first positioning part is fixed with the first matching part, and the second positioning part is fixed with the second matching part.

7. The liquid cooling plate according to claim 6, wherein the first positioning portion and the second positioning portion divide the flow passage into four cooling areas, and each of the grooves is distributed in the corresponding cooling area;

The runner plate further comprises a plurality of connecting grooves, wherein each connecting groove is arranged close to the end part of the first positioning part or the end part of the second positioning part and corresponds to two grooves.

8. The liquid cooling plate according to any one of claims 1 to 7, wherein the accommodation chamber is formed in the lower plate, the lower plate includes a bottom plate and a side wall extending from a side edge of the bottom plate in a bent manner, and an edge of one end of the side wall away from the bottom plate is turned outwards to form a mounting wall, and the mounting wall is fixedly connected to the upper plate.

9. The liquid cooling plate according to any one of claims 1 to 7, further comprising a heat conductive layer provided between the cooling device and the upper plate.

10. A battery module, comprising:

a plurality of electrical cores;

The tray is internally provided with a plurality of mounting cavities, and a plurality of battery cores are correspondingly mounted in the plurality of mounting cavities; and

The liquid cooling plate according to any one of claims 1 to 9, wherein a cover is provided on a plurality of the cells.