CN217768500U - Liquid cooling device and battery module - Google Patents

Abstract

The utility model discloses a liquid cooling device and a battery module, which comprises a first liquid cooling plate and a second liquid cooling plate which are connected and combined into a U-shaped frame; the first liquid cooling plate comprises a first bottom plate and a first side plate, and the first side plate is vertically arranged on the first bottom plate; the second liquid cooling plate comprises a second bottom plate and a second side plate, and the second side plate is vertically arranged on the second bottom plate; the first bottom plate and the second bottom plate are located on the same plane and are connected with each other. The utility model provides a pair of liquid cooling device and battery module, through providing first liquid cold drawing and the second liquid cold drawing that can the joint Assembly become the U-shaped frame, carry out temperature regulation to the side and the bottom surface of one side electric core subassembly separately respectively by every liquid cold drawing then, can accomplish the regulation to battery module bulk temperature in shorter time, improved temperature regulation efficiency greatly, reduced the difference of temperature between electric core, can guarantee the homogeneity of battery module temperature.

Description

Liquid cooling device and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a liquid cooling device and battery module.

Background

With the development of batteries, the rapid charging technology gradually becomes the mainstream development direction, but the rapid charging technology brings faster charging experience and also brings the rising of the temperature rising rate of the battery, so that the temperature distribution of different parts of the whole battery is uneven, or the temperature of the whole battery exceeds the normal working temperature, thereby affecting the working efficiency of the battery, even causing the thermal runaway of the battery, and seriously affecting the safety performance of the battery.

In addition, since the capacity of the battery is reduced in a low-temperature environment, the charging and discharging process becomes very slow, and thus the battery may not be normally started, and the service life of the battery may be reduced.

In order to solve the above problems, the prior art mostly adds the liquid cooling plate in the battery module, specifically place the liquid cooling plate on the bottom surface of electric core, but this mode can only unilateral carry out temperature regulation to the bottom surface of battery module, the influence of the transmission of solution battery module side temperature that can not be fine, then have the integrative liquid cooling plate in side and bottom surface appearing afterwards, the regulation of battery module bottom surface and side temperature has been taken into account, nevertheless because the body design of liquid cooling plate, the time difference that leads to the liquid in the liquid cooling plate runner to reach the bottom surface and the side of every electric core is great, hardly guarantee the homogeneity of temperature, thereby the liquid cooling effect can be greatly discounted.

Therefore, there is a need for improvements in the prior art.

The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid cooling device and battery module to solve the not enough of prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

in a first aspect, an embodiment of the present invention provides a liquid cooling apparatus, including a first liquid cooling plate and a second liquid cooling plate connected and combined into a U-shaped frame; wherein, the first and the second end of the pipe are connected with each other,

the first liquid cooling plate comprises a first bottom plate and a first side plate, and the first side plate is vertically arranged on the first bottom plate;

the second liquid cooling plate comprises a second bottom plate and a second side plate, and the second side plate is vertically arranged on the second bottom plate;

the first bottom plate and the second bottom plate are located on the same plane and are connected with each other.

Further, in the liquid cooling device, one end of the first bottom plate is provided with a first water inlet, the other end of the first bottom plate is provided with a first water outlet, a first flow channel is arranged inside the first bottom plate, the first flow channel is respectively communicated with the first water inlet and the first water outlet, a second flow channel is arranged inside the first side plate, and the second flow channel is communicated with the first flow channel;

a second water inlet is formed in one end of the second bottom plate, a second water outlet is formed in the other end of the second bottom plate, a third flow channel is formed in the second bottom plate and is respectively communicated with the second water inlet and the second water outlet, a fourth flow channel is formed in the second side plate and is communicated with the third flow channel;

or, one end of the first side plate is provided with a first water inlet, the other end of the first side plate is provided with a first water outlet, a second flow channel is arranged inside the first side plate, the second flow channel is respectively communicated with the first water inlet and the first water outlet, a first flow channel is arranged inside the first bottom plate, and the first flow channel is communicated with the second flow channel;

the water inlet structure comprises a first side plate, a first water inlet, a first water outlet, a first runner, a first bottom plate, a second runner and a second runner, wherein the first water inlet is formed in one end of the second side plate, the second water outlet is formed in the other end of the second side plate, the fourth runner is arranged in the second side plate and is communicated with the second water inlet and the second water outlet respectively, the third runner is arranged in the second bottom plate and is communicated with the fourth runner.

Furthermore, in the liquid cooling device, the first water inlet and the first water outlet are respectively located at two ends of the first bottom plate in the length direction or two ends of the first bottom plate in the width direction;

the second water inlet and the second water outlet are respectively positioned at two ends of the second bottom plate in the length direction or two ends of the second bottom plate in the width direction;

or the first water inlet and the first water outlet are respectively positioned at two ends of the first side plate in the length direction or two ends of the first side plate in the width direction;

the second water inlet and the second water outlet are respectively positioned at two ends of the second side plate in the length direction or two ends of the second side plate in the width direction.

Furthermore, in the liquid cooling device, the first bottom plate is positioned on the bottom surface of the electric core assembly, the length direction of the first bottom plate is consistent with the parallel arrangement direction of the electric core assembly, and the first side plate is positioned on one side surface of the electric core assembly, and the length direction of the first side plate is consistent with the parallel arrangement direction of the electric core assembly; the covering height of the second flow channel is greater than the height of the electric core assembly and less than the height of the electric core shell;

the second bottom plate is positioned on the bottom surface of the electric core assembly, the length direction of the second bottom plate is consistent with the parallel arrangement direction of the electric core assembly, and the second side plate is positioned on the other side surface of the electric core assembly, and the length direction of the second side plate is consistent with the parallel arrangement direction of the electric core assembly; the coverage height of the fourth flow channel is greater than the height of the electric core assembly and less than the height of the electric core shell.

Further, in the liquid cooling device, the first flow passage, the second flow passage, the third flow passage, and the fourth flow passage may have a regular shape or an irregular shape.

Furthermore, in the liquid cooling device, the first side plate and the second side plate are both provided with clamping holes matched with the clamping pieces on the end plates.

Furthermore, in the liquid cooling device, a connection surface between the first bottom plate and the second bottom plate is a Z-shaped connection surface.

Furthermore, in the liquid cooling device, the thicknesses of the first bottom plate, the first side plate, the second bottom plate and the second side plate are all larger than or equal to 3mm and smaller than or equal to 10mm.

In a second aspect, an embodiment of the present invention provides a battery module, which includes a plurality of battery cells, a plurality of heat insulating pads, a bus bar, two end plates, an upper cover, and a liquid cooling device, where the liquid cooling device is the liquid cooling device described in the first aspect above;

the plurality of electric cores are arranged in parallel and are electrically connected through the bus bar to form an electric core assembly, and the bottom surface and two side surfaces of the electric core assembly are surrounded by the liquid cooling device;

every two adjacent electric cores are isolated by a heat insulation pad;

the two end plates are respectively positioned at two ends of the electric core assembly in the parallel arrangement direction and are connected with the liquid cooling device in a buckling manner;

the upper cover is positioned at the top of the electric core assembly.

Further, in the battery module, the bottom surface and two sides of the electric core assembly are fixedly connected with the liquid cooling device through heat conducting structural adhesive or a heat conducting pad.

Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:

the embodiment of the utility model provides a pair of liquid cooling device and battery module, through providing first liquid cold drawing and the second liquid cold drawing that can the joint Assembly become the U-shaped frame, carry out temperature regulation to the side and the bottom surface of one side electric core subassembly separately respectively by every liquid cold drawing then, can accomplish the regulation to battery module bulk temperature in shorter time, improve temperature regulation efficiency greatly, reduced the difference of temperature between electric core, can guarantee the homogeneity of battery module temperature.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a liquid cooling apparatus according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a liquid cooling device according to an embodiment of the present invention;

fig. 3 is a schematic structural view illustrating a first flow channel and a second flow channel disposed on the same plane according to a first embodiment of the present invention;

fig. 4 is a schematic structural view illustrating a third flow channel and the fourth flow channel disposed on the same plane according to a first embodiment of the present invention;

fig. 5 is a schematic structural view illustrating a first flow channel and a second flow channel disposed on the same plane according to a first embodiment of the present invention;

fig. 6 is a schematic structural view illustrating a third flow channel and the fourth flow channel disposed on the same plane in the first embodiment of the present invention;

fig. 7 is a schematic view illustrating an assembly structure of a battery module according to a second embodiment of the present invention;

fig. 8 is an exploded schematic view of a battery module according to a second embodiment of the present invention.

Reference numerals are as follows:

the structure comprises a first liquid cooling plate 1, a second liquid cooling plate 2, a first water inlet 3, a first water outlet 4, a second water inlet 5, a second water outlet 6, a clamping hole 7, a battery cell 8, a heat insulation pad 9, a busbar 10, an end plate 11, an upper cover 12, a clamping piece 13, a first flow channel 14, a second flow channel 15, a third flow channel 16 and a fourth flow channel 17;

a first bottom plate 101, a first side plate 102;

a second bottom plate 201 and a second side plate 202.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

In view of the above-mentioned drawbacks of the conventional battery thermal management technology, the applicant of the present invention is based on practical experience and professional knowledge that are abundant over many years in the design and manufacture of such products, and actively develops research and innovation in cooperation with the application of theory, so as to hopefully develop a technology capable of solving the drawbacks of the conventional technology, so as to improve the reliability of the battery. Through continuous research and design, and after repeatedly trying on samples and improving, finally the utility model discloses establish and confirm utensil practical value.

Referring to fig. 1-2, an embodiment of the present invention provides a liquid cooling apparatus, including a first liquid cooling plate 1 and a second liquid cooling plate 2 connected to form a U-shaped frame; wherein, the first and the second end of the pipe are connected with each other,

the first liquid cold plate 1 comprises a first bottom plate 101 and a first side plate 102, wherein the first side plate 102 is vertically arranged on the first bottom plate 101 and is in an L-shaped or similar L-shaped structure;

the second liquid cooling plate 2 comprises a second bottom plate 201 and a second side plate 202, and the second side plate 202 is vertically arranged on the second bottom plate 201 and is in an L-shaped or similar L-shaped structure;

the first base plate 101 and the second base plate 201 are located on the same plane and are connected to each other.

It should be noted that, in this embodiment, the liquid cooling apparatus for performing thermal management on the battery is changed from the existing integrated type to the combined type, that is, includes the first liquid cooling plate 1 and the second liquid cooling plate 2. First liquid cold drawing 1 with second liquid cold drawing 2 can enough make up into the semi-enclosed U-shaped frame that can hold electric core after connecting, and can only carry out temperature regulation to the side and the bottom surface of one side electric core subassembly separately respectively because of every liquid cold drawing, and the quantity of the electric core 8 that needs radiation separately has become less, so can heat or cool off every electric core 8 more fast to can accomplish the regulation to battery module bulk temperature in shorter time.

In addition, the design that is L shape or similar L shape structure also makes in fact first liquid cold drawing 1 and second liquid cold drawing 2 have had the heat pipe concurrently and have had the effect fixed to the electric core subassembly, so can cancel the curb plate among the current battery module, can alleviate the weight of battery module, simplify the mounting process of battery module, improve the energy density of battery module simultaneously.

In this embodiment, the first base plate 101 and the second base plate 201 are connected and fixed by laser welding, gluing, bolting, riveting, or the like.

It should be noted that the connection between the first bottom plate 101 and the second bottom plate 201 may be a fixed connection or a detachable connection, but since the original purpose of dividing the liquid cooling apparatus into two is not to provide the advantages of flexible replacement and the like due to the detachable connection structure, but the radiation areas for the respective thermal management of the first liquid cooling plate 1 and the second liquid cooling plate 2 are reduced, thereby ensuring higher temperature regulation efficiency, even if the first bottom plate 101 and the second bottom plate 201 are independent from each other, the first bottom plate 101 and the second bottom plate 201 need to be connected finally, and it is relatively unimportant whether the connection between the two is a detachable connection or not in this embodiment.

The shape of the connection surface between the first base plate 101 and the second base plate 201 is not exclusive, but is preferably a Z-shaped connection surface. If the first base plate 101 and the second base plate 201 are fixedly connected, the connecting surface of the two is designed to be a Z-shaped connecting surface, which can increase the connecting area of the two, so that the connecting stability of the two can be improved.

In the present embodiment, the thicknesses of the first bottom plate 101, the first side plate 102, the second bottom plate 201 and the second side plate 202 are not exclusive, and may be determined according to practical situations, for example, the thicknesses may be arbitrarily selected in the range of 3mm to 10mm.

Because the liquid cooling device need cooperate with end plate 11 when constituteing the battery module to let end plate 11 seals two open sides on the liquid cooling device, then all need set up on first curb plate (102) and second curb plate (202) be used for with buckle 13 complex card hole 7 on the end plate 11. In this way, the end plate 11 can be connected to the first side plate (102) and the second side plate (202) by snapping the snap 13 into the snap hole 7.

In this embodiment, the design manner of the flow channel and the water inlet and outlet is not unique, for example, on one hand, one end of the first bottom plate 101 is provided with a first water inlet 3, the other end of the first bottom plate 101 is provided with a first water outlet 4, a first flow channel 14 is arranged inside the first bottom plate 101, the first flow channel 14 is respectively communicated with the first water inlet 3 and the first water outlet 4, a second flow channel 15 is arranged inside the first side plate 102, and the second flow channel 15 is communicated with the first flow channel 14;

a second water inlet 5 is formed in one end of the second bottom plate 201, a second water outlet 6 is formed in the other end of the second bottom plate 201, a third flow channel 16 is formed in the second bottom plate 201, the third flow channel 16 is respectively communicated with the second water inlet 5 and the second water outlet 6, a fourth flow channel 17 is formed in the second side plate 202, and the fourth flow channel 17 is communicated with the third flow channel 16.

It should be noted that, a liquid for performing thermal management, such as water, may enter the first flow channel 14 and the second flow channel 15 through the first water inlet 3, and may enter the third flow channel 16 and the fourth flow channel 17 through the second water inlet 5, so that the first liquid cooling plate 1 and the second liquid cooling plate 2 may perform heat exchange with the electric core assembly on one side of each of the two liquid cooling plates to achieve the purpose of heating or cooling, and then flow out from the first water outlet 4 and the second water outlet 6, respectively.

Optionally, the first water inlet 3 and the first water outlet 4 are respectively located at two ends of the first bottom plate (101) in the length direction or two ends of the first bottom plate in the width direction;

the second water inlet 5 and the second water outlet 6 are respectively located at two ends of the second bottom plate (201) in the length direction or two ends of the second bottom plate in the width direction. This embodiment is illustrated by taking such a design as an example, wherein the length directions of the first bottom plate (101) and the second bottom plate (201) are both ab directions in fig. 2, and the width directions are both cd directions in fig. 2.

On the other hand, a first water inlet 3 may be arranged at one end of the first side plate 102, a first water outlet 4 may be arranged at the other end of the first side plate 102, a second flow channel 15 is arranged inside the first side plate 102, the second flow channel 15 is respectively communicated with the first water inlet 3 and the first water outlet 4, a first flow channel 14 is arranged inside the first bottom plate 101, and the first flow channel 14 is communicated with the second flow channel 15;

a second water inlet 5 is formed in one end of the second side plate 202, a second water outlet 6 is formed in the other end of the second side plate 202, a fourth flow channel 17 is formed in the second side plate 202, the fourth flow channel 17 is respectively communicated with the second water inlet 5 and the second water outlet 6, a third flow channel 16 is formed in the second bottom plate 201, and the third flow channel 16 is communicated with the fourth flow channel 17.

Similarly, water and other liquids for thermal management may enter the second flow channel 15 and the first flow channel 14 through the first water inlet 3, and may enter the fourth flow channel 17 and the third flow channel 16 through the second water inlet 5, so that the first liquid cooling plate 1 and the second liquid cooling plate 2 may exchange heat with the electric core assembly on one side thereof to achieve the purpose of heating or cooling, and then flow out from the first water outlet 4 and the second water outlet 6, respectively.

Optionally, the first water inlet 3 and the first water outlet 4 are respectively located at two ends of the first side plate 102 in the length direction or two ends of the first side plate in the width direction;

the second water inlet 5 and the second water outlet 6 are respectively located at two ends of the second side plate 202 in the length direction or two ends of the second side plate in the width direction.

In this embodiment, the first bottom plate 101 is located on the bottom surface of the electric core assembly, and the length direction of the first bottom plate is consistent with the parallel arrangement direction of the electric core assembly, and the first side plate 102 is located on one side surface of the electric core assembly, and the length direction of the first side plate is consistent with the parallel arrangement direction of the electric core assembly; the covering height of the second flow channel 15 is greater than the height of the electric core assembly and less than the height of the electric core shell, so that the temperature control range of the second flow channel 15 can be ensured to cover each part which is possibly subjected to temperature transmission on the side surface of the electric core assembly;

the second bottom plate 201 is positioned on the bottom surface of the electric core assembly, and the length direction of the second bottom plate is consistent with the parallel arrangement direction of the electric core assembly, and the second side plate 202 is positioned on the other side surface of the electric core assembly, and the length direction of the second side plate is consistent with the parallel arrangement direction of the electric core assembly; the coverage height of the fourth flow channel 17 is greater than the height of the electric core assembly and smaller than the height of the electric core shell, and similarly, it can be ensured that the temperature control range of the fourth flow channel 17 covers each part which is possibly subjected to temperature transfer on the side surface of the electric core assembly.

In this embodiment, the shapes of the first flow passage 14, the second flow passage 15, the third flow passage 16, and the fourth flow passage 17 are not exclusive, and may be regular shapes or irregular shapes.

For example, taking a serpentine shape that is bent back and forth as an example, when the first flow channel 14 and the second flow channel 15 are disposed on the same plane, the corresponding schematic structure is shown in fig. 3, and when the third flow channel 16 and the fourth flow channel 17 are disposed on the same plane, the corresponding schematic structure is shown in fig. 4.

Taking a plurality of straight lines side by side as an example, when the first flow channel 14 and the second flow channel 15 are disposed on the same plane, the corresponding structural schematic diagram is shown in fig. 5, and when the third flow channel 16 and the fourth flow channel 17 are disposed on the same plane, the corresponding structural schematic diagram is shown in fig. 6.

In addition, the heights of the first flow channel 14, the second flow channel 15, the third flow channel 16 and the fourth flow channel 17 can be arbitrarily selected within the range of 3mm to 7 mm.

Although the terms first liquid cooling plate, second liquid cooling plate, first water inlet, first water outlet, second water inlet, second water outlet, clamping hole, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

The embodiment of the utility model provides a pair of liquid cooling device can connect into the first liquid cold drawing and the second liquid cold drawing of U-shaped frame through providing, carries out temperature regulation to the side of one side electric core subassembly separately and bottom surface respectively by every liquid cold drawing then, can accomplish the regulation to battery module bulk temperature in shorter time, has improved temperature regulation efficiency greatly, has reduced the difference of temperature between electric core, can guarantee the homogeneity of battery module temperature.

Example two

Referring to fig. 7-8, an embodiment of the present invention provides a battery module, which includes a plurality of battery cells 8, a plurality of heat insulation pads 9, a bus bar 10, two end plates 11, an upper cover 12, and a liquid cooling device, where the liquid cooling device is the above-mentioned liquid cooling device;

the plurality of electric cores 8 are arranged in parallel and are electrically connected through the bus bar 10 to form an electric core assembly, and the bottom surface and two side surfaces of the electric core assembly are surrounded by the liquid cooling device;

every two adjacent electric cores 8 are isolated by one heat insulation pad 9;

the two end plates 11 are respectively positioned at two ends of the electric core assembly in the parallel arrangement direction and are connected with the liquid cooling device in a buckling manner;

the upper cover 12 is located on top of the cell assembly.

In this embodiment, the bottom surface and the two side surfaces of the electric core assembly are fixedly connected with the liquid cooling device through the heat conducting structural adhesive or the heat conducting pad.

It should be noted that, while the battery cell 8 and the liquid cooling device are fixed by the heat conducting structural adhesive or the heat conducting pad, heat transfer between the battery cell and the liquid cooling device may also be facilitated.

An embodiment of the utility model provides a pair of battery module, through providing first liquid cooling board and the second liquid cooling board that can the joint Assembly U-shaped frame, carry out temperature regulation to the side and the bottom surface of one side battery module group separately respectively by every liquid cooling board then, can accomplish the regulation to battery module bulk temperature in shorter time, improved temperature regulation efficiency greatly, reduced the difference of temperature between the electric core, can guarantee the homogeneity of battery module temperature.

The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same elements or features may also vary in many respects. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific parts, devices, and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on," "8230," "over," "with," "8230," "bonding," "connected to," or "coupled to" another element or layer, it can be directly on, bonded to, connected to, or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on" \8230; \8230, over "," with "\8230; \8230, directly bonded to", "directly connected to", or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "at 8230; \8230; between" and "directly at 8230; \8230; between", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Spatially relative terms, such as "inner," "outer," "underlying," "below," "at 8230;, \8230," "lower," "above," "upper," etc., may be used herein for ease of description to describe the relationship of one element or feature to another element or feature or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" \8230; \8230 "", may encompass both an upward and downward orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.

Claims (10)

1. The liquid cooling device is characterized by comprising a first liquid cooling plate (1) and a second liquid cooling plate (2) which are connected and combined into a U-shaped frame; wherein, the first and the second end of the pipe are connected with each other,

the first liquid cooling plate (1) comprises a first bottom plate (101) and a first side plate (102), and the first side plate (102) is vertically arranged on the first bottom plate (101);

the second liquid cooling plate (2) comprises a second bottom plate (201) and a second side plate (202), and the second side plate (202) is vertically arranged on the second bottom plate (201);

the first bottom plate (101) and the second bottom plate (201) are located on the same plane and are connected with each other.

2. The liquid cooling apparatus as claimed in claim 1, wherein one end of the first bottom plate (101) is provided with a first water inlet (3), the other end of the first bottom plate (101) is provided with a first water outlet (4), a first flow channel (14) is disposed inside the first bottom plate (101), the first flow channel (14) is respectively communicated with the first water inlet (3) and the first water outlet (4), a second flow channel (15) is disposed inside the first side plate (102), and the second flow channel (15) is communicated with the first flow channel (14);

a second water inlet (5) is formed in one end of the second bottom plate (201), a second water outlet (6) is formed in the other end of the second bottom plate (201), a third flow channel (16) is formed in the second bottom plate (201), the third flow channel (16) is communicated with the second water inlet (5) and the second water outlet (6) respectively, a fourth flow channel (17) is formed in the second side plate (202), and the fourth flow channel (17) is communicated with the third flow channel (16);

or a first water inlet (3) is formed in one end of the first side plate (102), a first water outlet (4) is formed in the other end of the first side plate (102), a second flow passage (15) is formed in the first side plate (102), the second flow passage (15) is respectively communicated with the first water inlet (3) and the first water outlet (4), a first flow passage (14) is formed in the first bottom plate (101), and the first flow passage (14) is communicated with the second flow passage (15);

one end of the second side plate (202) is provided with a second water inlet (5), the other end of the second side plate (202) is provided with a second water outlet (6), a fourth flow channel (17) is arranged inside the second side plate (202), the fourth flow channel (17) is communicated with the second water inlet (5) and the second water outlet (6) respectively, a third flow channel (16) is arranged inside the second bottom plate (201), and the third flow channel (16) is communicated with the fourth flow channel (17).

3. The liquid cooling device of claim 2, wherein the first water inlet (3) and the first water outlet (4) are respectively located at two ends of the first bottom plate (101) in the length direction or two ends of the first bottom plate in the width direction;

the second water inlet (5) and the second water outlet (6) are respectively positioned at two ends of the second bottom plate (201) in the length direction or two ends of the second bottom plate in the width direction;

or the first water inlet (3) and the first water outlet (4) are respectively positioned at two ends of the first side plate (102) in the length direction or two ends of the first side plate in the width direction;

the second water inlet (5) and the second water outlet (6) are respectively positioned at two ends of the second side plate (202) in the length direction or two ends of the second side plate in the width direction.

4. A liquid cooling device according to claim 2, wherein the first base plate (101) is located at a bottom surface of the electric core assembly and has a length direction consistent with a parallel arrangement direction of the electric core assembly, and the first side plate (102) is located at one side surface of the electric core assembly and has a length direction consistent with a parallel arrangement direction of the electric core assembly; the covering height of the second flow channel (15) is greater than the height of the cell assembly and less than the height of the cell shell;

the second bottom plate (201) is positioned on the bottom surface of the electric core assembly, the length direction of the second bottom plate is consistent with the parallel arrangement direction of the electric core assembly, and the second side plate (202) is positioned on the other side surface of the electric core assembly, and the length direction of the second bottom plate is consistent with the parallel arrangement direction of the electric core assembly; the coverage height of the fourth flow channel (17) is greater than the height of the battery core assembly and less than the height of the battery core shell.

5. The liquid cooling device of claim 2, wherein the first flow passage (14), the second flow passage (15), the third flow passage (16), and the fourth flow passage (17) have regular shapes or irregular shapes.

6. The liquid cooling device as claimed in claim 1, wherein the first side plate (102) and the second side plate (202) are both provided with a locking hole (7) for engaging with a locking member (13) of an end plate (11).

7. The liquid cooling apparatus of claim 1, wherein a connection surface of the first base plate (101) and the second base plate (201) is a Z-shaped connection surface.

8. The liquid cooling device of claim 1, wherein the first base plate (101), the first side plate (102), the second base plate (201), and the second side plate (202) each have a thickness of 3mm or more and 10mm or less.

9. A battery module comprising a plurality of cells (8), a plurality of heat insulating mats (9), a busbar (10), two end plates (11), an upper cover (12) and a liquid cooling device, wherein the liquid cooling device is a liquid cooling device according to any one of claims 1 to 8;

the plurality of electric cores (8) are arranged in parallel and are electrically connected through the bus bar (10) to form an electric core assembly, and the bottom surface and two side surfaces of the electric core assembly are surrounded by the liquid cooling device;

every two adjacent electric cores (8) are isolated by a heat insulation pad (9);

the two end plates (11) are respectively positioned at two ends of the electric core assembly in the parallel arrangement direction and are connected with the liquid cooling device in a buckling manner;

the upper cover (12) is positioned on top of the electric core assembly.

10. The battery module according to claim 9, wherein the bottom surface and two side surfaces of the electric core assembly are fixedly connected with the liquid cooling device through a heat-conducting structural adhesive or a heat-conducting pad.

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