Battery cell module and battery

Abstract

The utility model provides a battery cell module and a battery, and relates to the technical field of energy storage. The battery cell module comprises a plurality of battery cell units, and the plurality of battery cell units are arranged along a first direction; a liquid cooling structure is arranged between at least any two adjacent battery cell units, the liquid cooling structure is attached to the side face of the adjacent battery cell unit, the top face of the liquid cooling structure is flush with the top face of the battery cell unit, and the bottom face of the liquid cooling structure is flush with the bottom face of the battery cell unit. According to the battery cell module and the battery provided by the invention, the cooling effect can be improved, so that the performance of the battery is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage technology, and in particular to a battery cell module and a battery. Background Art

[0002] With the widespread use of new energy vehicles, batteries are widely used in new energy vehicles as power output devices of new energy vehicles.

[0003] In the related art, a battery generally includes a shell and at least one battery cell module located in the shell, and each battery cell module includes a plurality of stacked battery cells. The battery cells need to generate a large amount of heat during operation, and a liquid cooling structure is generally used to cool the battery cells.

[0004] However, the current liquid cooling structure has low cooling efficiency and cannot effectively diffuse heat to the outside of the shell in a timely manner, thereby reducing the performance of the battery. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide a battery cell module and a battery, which can improve the cooling effect of the battery cell module and thus improve the performance of the battery.

[0006] In order to achieve the above objectives, the present application provides the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a battery cell module, comprising: a plurality of battery cell units, wherein the plurality of battery cell units are arranged along a first direction;

[0008] A liquid cooling structure is provided between at least any two adjacent battery cell units, and the liquid cooling structure is arranged in close contact with the side surfaces of the adjacent battery cell units, and the top surface of the liquid cooling structure is flush with the top surface of the battery cell unit, and the bottom surface of the liquid cooling structure is flush with the bottom surface of the battery cell unit.

[0009] In a possible implementation, each of the liquid cooling structures includes a liquid cooling plate and heat dissipation fins arranged on both sides of the liquid cooling plate, and the heat dissipation fins have elastic force;

[0010] A flow channel for the liquid coolant to flow is formed inside the liquid cooling plate, and a heat exchange channel is enclosed between the heat dissipation fins and the liquid cooling plate.

[0011] In a possible implementation, the heat dissipation fins include a plurality of arc-shaped fin monomers connected in sequence, and the connection points of adjacent fin monomers are connected to the liquid cooling plate;

[0012] Each of the fin units and the liquid cooling plate enclose a sub-heat exchange channel, and a plurality of the sub-heat exchange channels constitute the heat exchange channel.

[0013] In a possible implementation, the heat dissipation fin includes a plurality of relatively independently arranged fin monomers, one end of each of the fin monomers is connected to the liquid cooling plate, and encloses a sub-heat exchange channel with the liquid cooling plate, and a plurality of the sub-heat exchange channels constitute the heat exchange channel.

[0014] In a possible implementation, a plurality of partition plates are provided in the liquid cooling plate, and the plurality of partition plates are spaced apart along the height direction of the battery cell unit, and in the second direction, a preset distance is provided between the end of each partition plate and the inner wall of the corresponding liquid cooling plate;

[0015] The second direction, the first direction and the height direction of the battery cell unit are perpendicular to each other.

[0016] In a possible implementation, the partition plate and the liquid cooling plate are an integrated piece.

[0017] In a possible implementation, in the second direction, opposite side walls of the liquid cooling plate are respectively provided with a liquid inlet and a liquid outlet.

[0018] In a possible implementation, the partition plate has a thickness of 0.1 mm to 3 mm; the heat dissipation fin has a thickness of 0.1 mm to 3 mm; and the liquid cooling plate has a thickness of 0.1 mm to 3 mm.

[0019] In a possible implementation, each of the battery cell units includes a plurality of battery cell units sequentially arranged along a second direction; wherein the first direction and the second direction are perpendicular to each other.

[0020] A second aspect of an embodiment of the present application provides a battery, comprising: a shell and the battery cell module of the first aspect, wherein the battery cell module is arranged in the shell.

[0021] In the battery cell module and battery provided in the embodiments of the present application, a liquid cooling structure is provided at least between any adjacent battery cell units, and the liquid cooling structure is fitted with the side of the battery cell units adjacent thereto, that is, the liquid cooling structure is fitted with the side of the battery cell units located on one side thereof, and is also fitted with the side of the battery cell units located on the other side thereof; compared with the technical solution in the related art in which the liquid cooling structure is fitted with the bottom surface of the battery cell units, the heat exchange area between the liquid cooling structure and the battery cell units is increased, the heat exchange capacity of the liquid cooling structure is greatly improved, and thus the cooling effect of the battery cell module is improved.

[0022] In addition, the top surface of the liquid cooling structure is flush with the top surface of the battery cell unit, and the bottom surface of the liquid cooling structure is flush with the bottom surface of the battery cell unit. This makes the top and bottom of the battery cell unit contact with the liquid cooling structure, reducing the temperature difference between the top and bottom of the battery cell unit, ensuring the performance of the battery cell unit and the accuracy of status monitoring.

[0023] In addition to the technical problems solved by the embodiments of the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the battery cell module and battery provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of a battery cell module provided in an embodiment of the present application;

[0026] Figure 2 An exploded schematic diagram of a battery cell module provided in an embodiment of the present application;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0028] Figure 4 Schematic diagram of the liquid cooling structure provided in the embodiment of the present application Figure 1 ;

[0029] Figure 5 for Figure 4 Explosion diagram of

[0030] Figure 6 Schematic diagram of the liquid cooling structure provided in the embodiment of the present application Figure 2 ;

[0031] Figure 7 for Figure 6 Explosion diagram.

[0032] Description of reference numerals:

[0033] 100: battery cell unit; 110: battery cell monomer;

[0034] 200: Liquid cooling structure;

[0035] 210: liquid cooling plate; 211: circulation channel; 212: top plate; 213: bottom plate; 214: left side plate; 215: right side plate; 216: front side plate;

[0036] 220: heat dissipation fin; 221: fin unit;

[0037] 230: heat exchange channel;

[0038] 240: separator;

[0039] 250: Liquid inlet. DETAILED DESCRIPTION

[0040] As described in the background technology, the battery module in the related art has the problem of low cooling efficiency. The inventor has found that the reason for this problem is that in the related art, multiple battery cells are usually stacked in the shell along the height direction, or stacked in the shell along the length direction or the width direction. In order to cool the battery cell unit, the liquid cooling structure is usually set at the bottom of the battery cell module so that the liquid cooling structure contacts the bottom surface of the battery cell unit; in this way, on the one hand, the contact area between the liquid cooling structure and the battery cell unit is small, which leads to a small heat exchange area and reduces the heat dissipation effect of the battery cell module; on the other hand, the battery cell module is set on the top surface of the liquid cooling structure, which causes the liquid cooling structure to bear a large weight, so it is necessary to strengthen the structural strength of the liquid cooling structure, which increases the preparation cost of the liquid cooling structure; on the other hand, the liquid cooling structure contacts the bottom surface of the battery cell unit, which causes a large temperature difference between the top and bottom of the battery cell module, which will have an adverse effect on the performance and status monitoring of the battery cell module.

[0041] In response to the above technical problems, an embodiment of the present application provides a battery cell module and a battery, in which a liquid cooling structure is provided at least between any adjacent battery cell units, and the liquid cooling structure is fitted with the side of the battery cell units adjacent to it, that is, the liquid cooling structure is fitted with the side of the battery cell units located on one side thereof, and is also fitted with the side of the battery cell units located on the other side thereof; compared with the technical solution in which the liquid cooling structure is fitted with the bottom surface of the battery cell units in the related art, the heat exchange area between the liquid cooling structure and the battery cell units is increased, the heat exchange capacity of the liquid cooling structure is greatly improved, and thus the cooling effect of the battery cell module is improved.

[0042] In addition, the top surface of the liquid cooling structure is flush with the top surface of the battery cell unit, and the bottom surface of the liquid cooling structure is flush with the bottom surface of the battery cell unit, so that the top and bottom of the battery cell unit are in contact with the liquid cooling structure, reducing the temperature difference formed between the top and bottom of the battery cell unit, and ensuring the performance of the battery cell unit and the accuracy of status monitoring.

[0043] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0044] Embodiment 1

[0045] Please refer to the attached Figure 1 To Attachment Figure 7 The embodiment of the present application provides a battery cell module, which can be applied to a battery and then applied to an electrical device to provide electrical energy to the electrical device.

[0046] Please refer to the attached Figure 1 and attached Figure 2 The battery cell module provided in the embodiment of the present application includes a plurality of battery cell units 100, and the plurality of battery cell units 100 are arranged along a first direction; in other words, the plurality of battery cell units 100 are arranged along an adjacent Figure 1 and attached Figure 2 Arranged in the X direction.

[0047] A liquid cooling structure 200 is provided between at least any two adjacent battery cell units 100. In one example, the number of battery cell units 100 is greater than the number of liquid cooling structures 200, and the liquid cooling structure 200 is only provided between adjacent battery cell units 100. In another example, the number of battery cell units 100 is less than the number of liquid cooling structures 200, and the liquid cooling structure 200 is not only provided between adjacent battery cell units 100, but also provided at both ends of multiple battery cell units 100 in the first direction. For example, please refer to the attached Figure 1 There are three battery cell units 100 and four liquid cooling structures 200. A liquid cooling structure 200 is arranged between any adjacent battery cell units 100, a liquid cooling structure 200 is arranged on the left side of the first battery cell unit 100, and a liquid cooling structure 200 is arranged on the right side of the last battery cell unit 100, so that a liquid cooling structure 200 is arranged on both sides of each battery cell unit 100, so that the heat generated by the battery cell unit 100 can be quickly and effectively cooled.

[0048] Please continue to refer to the attached Figure 1, the liquid cooling structure 200 is arranged in abutment with the side of the battery cell unit 100 adjacent thereto. In order to facilitate the description of the positional relationship between the liquid cooling structure 200 and the battery cell unit 100, from left to right, the first liquid cooling structure 200 is arranged in abutment with the left side of the first battery cell unit 100; the second liquid cooling structure 200 is arranged in abutment with the right side of the first battery cell unit 100, and is also arranged in abutment with the left side of the second battery cell unit 100; the third liquid cooling structure 200 is arranged in abutment with the right side of the second battery cell unit 100, and is also arranged in abutment with the left side of the third battery cell unit 100; the fourth liquid cooling structure 200 is arranged in abutment with the right side of the third battery cell unit 100.

[0049] Compared with the technical solution in which the liquid cooling structure 200 is bonded to the bottom surface of the battery cell unit 100 in the related art, the battery cell module provided in the embodiment of the present application increases the heat exchange area between the liquid cooling structure 200 and the battery cell unit 100 and shortens the heat exchange path, greatly improving the heat exchange capacity of the liquid cooling structure 200, thereby improving the cooling effect of the battery cell module. At the same time, the liquid cooling structure 200 is bonded to the side of the battery cell unit 100, and does not need to bear the weight of the battery cell unit 100. Therefore, it is not necessary to strengthen the structural strength of the liquid cooling structure 200, thereby reducing the preparation cost of the liquid cooling structure 200.

[0050] Please continue to refer to the attached Figure 1 and attached Figure 2 The top surface of the liquid cooling structure 200 is flush with the top surface of the battery cell unit 100, and the bottom surface of the liquid cooling structure 200 is flush with the bottom surface of the battery cell unit 100. The top and bottom of the battery cell unit 100 can be in contact with the liquid cooling structure 200, which reduces the temperature difference between the top and bottom of the battery cell unit 100, achieves a balanced cooling effect on the top and bottom of the battery cell unit 100, and ensures the performance of the battery cell unit 100 and the accuracy of status monitoring.

[0051] Please refer to the attached Figure 3 To Attachment Figure 7 Each liquid cooling structure 200 includes a liquid cooling plate 210 and heat dissipation fins 220, wherein a flow channel 211 for the flow of liquid coolant is formed inside the liquid cooling plate 210, wherein the shape of the flow channel 211 can be regular or irregular.

[0052] In this embodiment, the shape of the liquid cooling plate 210 may also be a regular shape. Figure 5 As shown, the liquid cooling plate 210 includes a top plate 212, a bottom plate 213, and a side plate disposed between the top plate 212 and the bottom plate 213. Figure 3 and attached Figure 5Taking the orientation shown as an example, the side panels include a left side panel 214, a right side panel 215, and a front side panel 216 and a rear side panel (not shown in the figure) located between the left side panel 214 and the right side panel 215, so that the liquid cooling structure 200 forms a structure with a rectangular flow channel. In this way, the left side panel 214 and the right side panel 215 are plate-shaped bodies, which can facilitate the arrangement of the heat dissipation fins 220.

[0053] There are two heat sinks 220, which are arranged on both sides of the liquid cooling plate 210. A heat exchange channel 230 is enclosed between each heat sink fin 220 and the liquid cooling plate 210. After the heat generated by the battery cell unit 100 is dissipated through the liquid cooling plate 210, it can also exchange heat with the heat sink fins and circulating air at the heat exchange channel 230, thereby improving the heat dissipation effect of the liquid cooling structure 200.

[0054] The breathing phenomenon and thermal expansion and contraction phenomenon of the battery cell unit 100 during the charge and discharge process will cause the size of the battery cell unit 100 to change, thereby squeezing the liquid cooling structure 200, which may easily cause the liquid cooling structure 200 to deform, which will not only reduce the cooling effect of the liquid cooling structure 200, but also reduce the service life of the battery cell module.

[0055] In view of this, the heat dissipation fins 220 provided in this embodiment have a certain elastic force, which can absorb the thickness tolerance of the battery cell unit 100, and adapt to the size change caused by the breathing effect during the charging and discharging process of the battery cell unit 100, and absorb the size expansion of the battery cell unit 100 throughout the life cycle, so as to ensure the cooling effect of the liquid cooling structure 200 and extend the service life of the battery cell module.

[0056] In this embodiment, the materials of the heat dissipation fins 220 and the liquid cooling plate 210 include but are not limited to aluminum alloy, magnesium alloy and other metal and non-metal materials with high thermal conductivity.

[0057] In addition, the heat dissipation fins 220 and the liquid cooling plate 210 can be an integral part, for example, they can be formed by extrusion of an integral profile, so that the liquid cooling structure 200 has a higher structural strength, and has the advantages of simple structure and easy preparation. The heat dissipation fins 220 can also be a separate structure from the liquid cooling plate 210, for example, the heat dissipation fins 220 can be fixedly set on the liquid cooling plate 210 by welding or bonding, so that the shape structure of the heat dissipation fins 220 can be set according to actual needs, so as to improve the applicability of the liquid cooling structure 200.

[0058] As a possible implementation of the heat dissipation fin 220, please refer to the attached Figure 4 and attached Figure 5The heat dissipation fin 220 includes a plurality of arc-shaped fin monomers connected in sequence, and the connection between adjacent fin monomers is connected to the liquid cooling plate 210; each fin monomer and the liquid cooling plate 210 enclose a sub-heat exchange channel, and a plurality of sub-heat exchange channels constitute a heat exchange channel 230.

[0059] Such a configuration can reduce the contact area between the heat dissipation fins 220 and the liquid cooling plate 210, fully ensure the area of ​​the heat exchange channel 230, and further improve the heat exchange effect of the liquid cooling structure 200, thereby reducing the temperature of the battery module as quickly and effectively as possible.

[0060] In addition, the multiple arc-shaped fin monomers can also increase the area of ​​the heat dissipation fins 220 and improve the heat exchange capacity of the heat dissipation fins 220.

[0061] As another possible implementation of the heat dissipation fin 220, please refer to the attached Figure 6 and attached Figure 7 The heat dissipation fin 220 includes a plurality of relatively independently arranged fin monomers 221, and the plurality of fin monomers 221 are arranged at intervals along the height direction of the liquid cooling plate 210. Figure 6 The Z direction in .

[0062] One end of each fin monomer 221 is connected to the liquid cooling plate 210, and encloses a sub-heat exchange channel with the liquid cooling plate, and multiple sub-heat exchange channels constitute a heat exchange channel 230. In this embodiment, multiple fin monomers 221 are relatively independently arranged. In this way, the number of fin monomers 221 can be set according to actual needs to improve the applicability of the liquid cooling structure 200. Among them, the shape of each fin monomer 221 can be arc-shaped, so that it is convenient to form a sub-exchange channel.

[0063] In one possible implementation, please refer to the attached Figure 1 To Attachment Figure 3 , a plurality of partition plates 240 are provided in the liquid cooling plate 210, that is, a plurality of partition plates 240 are provided in the circulation channel 211. The plurality of partition plates 240 are arranged at intervals along the height direction of the battery cell unit 100; Figure 1 Interval setting in the Z direction.

[0064] In the second direction, there is a preset distance between the end of each partition plate 240 and the inner wall of the corresponding liquid cooling plate 210, that is, in the second direction, there is a preset distance between each partition plate 240 and the front side plate 216 and the rear side plate, so that the sub-circulation channels surrounded by any adjacent partition plates 240 are interconnected, which facilitates the liquid coolant to flow in the circulation channel 211 to absorb the heat released by the battery cell unit 100. The second direction, the first direction and the height direction of the battery cell unit are perpendicular to each other. The first direction is the attached Figure 1 The X direction in the second direction is the Figure 1 In the Y direction, the height direction of the battery cell unit 100 is Figure 1 The Z direction in .

[0065] In this embodiment, by disposing a plurality of partition plates 240 , the flow path of the liquid coolant in the flow channel 211 is increased, thereby improving the cooling effect of the liquid cooling structure 200 .

[0066] It should be noted that in this embodiment, the partition plate 240 and the liquid cooling plate 210 can be an integral part or a separate part. In one example, the partition plate 240 and the liquid cooling plate 210 are an integral part, which can be formed by extrusion of an integral profile, and has the advantages of high structural strength and simple preparation process. In another example, the partition plate 240 can be fixedly connected to the liquid cooling plate 210 by a molding process such as welding or bonding. In this way, the number of partition plates 240 can be set according to actual needs, thereby improving the flexibility of the liquid cooling structure 200.

[0067] In this embodiment, the thickness of the partition plate 240 is 0.1 mm to 3 mm; for example, the thickness of the partition plate 240 is 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm. The thickness of the heat dissipation fin 220 is 0.1 mm to 3 mm; for example, the thickness of the heat dissipation fin 220 is 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm. The thickness of the liquid cooling plate 210 is 0.1 mm to 3 mm, for example, the thickness of the liquid cooling plate 210 is 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm.

[0068] By properly setting the thickness of the partition plate 240 , the heat dissipation fins 220 and the liquid cooling plate 210 , the cooling effect of the liquid cooling structure 200 can be fully realized and the energy density of the battery module can be reduced.

[0069] In a possible implementation, in the second direction, the liquid inlet 250 and the liquid outlet are respectively provided on the opposite side walls of the liquid cooling plate 210, wherein the liquid inlet 250 is used to connect to the liquid supply device, and the liquid outlet can also be connected to the liquid supply device to ensure the circulation of the liquid coolant. Exemplarily, the liquid inlet 250 is provided on the front side plate 216 of the liquid cooling plate 210, and the liquid outlet (not shown in the figure) is provided on the rear side plate of the liquid cooling plate 210; the liquid inlet and the liquid outlet are arranged relative to each other, which can improve the smoothness of the liquid coolant in the circulation channel 211, thereby improving the cooling effect of the liquid cooling structure 200.

[0070] Each battery cell unit 100 includes a plurality of battery cells 110 arranged in sequence along the second direction; wherein the first direction and the second direction are perpendicular to each other. The liquid cooling structure 200 is in contact with the side of each battery cell 110, which increases the heat exchange area between the liquid cooling structure 200 and each battery cell 110 and shortens the heat exchange path, greatly improving the heat exchange capacity of the liquid cooling structure 200, thereby improving the cooling effect of the battery cell module.

[0071] Embodiment 2

[0072] The embodiment of the present application provides a battery, which can be applied to an electrical device to provide electrical energy to the electrical device. The electrical device in the embodiment of the present application can be a vehicle, for example: the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. In addition, the electrical device can also be other energy storage devices, such as mobile phones, portable devices, laptops, electric toys, electric tools, ships and spacecraft, etc., wherein the spacecraft can include an airplane, a rocket, a space shuttle or a spacecraft.

[0073] The battery comprises a housing (not shown) and a cell module as described in any embodiment of Embodiment 1. The cell module is protected by the housing, wherein the structure of the housing can be found in the description of the related art, and will not be further described in this embodiment.

[0074] Since the battery in this embodiment includes the battery cell module in any of the above embodiments, the battery provided in this embodiment includes the structure and beneficial effects of the battery cell module, which will not be described in detail in this embodiment.

[0075] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0076] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0077] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0078] It should be easily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0079] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0080] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cell module, characterized in that: It comprises a plurality of battery core units, wherein the plurality of battery core units are arranged along a first direction; A liquid cooling structure is provided between at least any two adjacent battery cell units, and the liquid cooling structure is arranged in close contact with the side surfaces of the adjacent battery cell units, and the top surface of the liquid cooling structure is flush with the top surface of the battery cell unit, and the bottom surface of the liquid cooling structure is flush with the bottom surface of the battery cell unit.

2. The battery cell module according to claim 1, characterized in that: Each of the liquid cooling structures comprises a liquid cooling plate and heat dissipation fins arranged on both sides of the liquid cooling plate, and the heat dissipation fins have elastic force; A flow channel for the flow of liquid coolant is formed inside the liquid cooling plate, and a heat exchange channel is enclosed between the heat dissipation fins and the liquid cooling plate.

3. The battery cell module according to claim 2, characterized in that: The heat dissipation fins include a plurality of arc-shaped fin monomers connected in sequence, and the connection points of adjacent fin monomers are connected to the liquid cooling plate; Each of the fin units and the liquid cooling plate enclose a sub-heat exchange channel, and a plurality of the sub-heat exchange channels constitute the heat exchange channel.

4. The battery cell module according to claim 2, characterized in that: The heat dissipation fins include a plurality of relatively independently arranged fin monomers, one end of each of the fin monomers is connected to the liquid cooling plate, and encloses a sub-heat exchange channel with the liquid cooling plate, and a plurality of the sub-heat exchange channels constitute the heat exchange channel.

5. The battery cell module according to any one of claims 2 to 4, characterized in that: A plurality of partition plates are provided in the liquid cooling plate, and the plurality of partition plates are arranged at intervals along the height direction of the battery cell unit, and in the second direction, a preset distance is formed between the end of each partition plate and the inner wall of the corresponding liquid cooling plate; The second direction, the first direction and the height direction of the battery cell unit are perpendicular to each other.

6. The battery cell module according to claim 5, characterized in that: The partition plate and the liquid cooling plate are an integral part.

7. The battery cell module according to claim 5, characterized in that: In the second direction, opposite side walls of the liquid cooling plate are respectively provided with a liquid inlet and a liquid outlet.

8. The battery cell module according to claim 5, characterized in that: The thickness of the partition plate is 0.1 mm to 3 mm; the thickness of the heat dissipation fin is 0.1 mm to 3 mm; the thickness of the liquid cooling plate is 0.1 mm to 3 mm.

9. The battery cell module according to any one of claims 1 to 4, characterized in that: Each of the battery cell units includes a plurality of battery cell monomers arranged in sequence along a second direction; wherein the first direction and the second direction are perpendicular to each other.

10. A battery, characterized in that: It comprises a shell and the battery cell module according to any one of claims 1 to 9, wherein the battery cell module is arranged in the shell.

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