Battery cell assembly and battery module

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a battery cell assembly and a battery module, the battery cell assembly comprises a battery cell, an aluminum wing and a support, the battery cell comprises a battery cell main body and a tab, the battery cell main body is located in a space defined by the aluminum wing, the battery cell main body is attached to the aluminum wing, the tab is located on the side edge of the battery cell main body, and the aluminum wing is located on the support. The bracket is fixedly mounted on the side edge, close to the tab, of the aluminum wing, and is used for fixing the position of the battery cell and cooling the battery cell. The battery cell assembly solves the problems that a traditional battery cell assembly simply dissipates heat of a battery cell through an aluminum wing, the heat dissipation effect is limited, and the heat dissipation effect is poor due to the fact that the structures of the traditional battery cell and the aluminum wing are unstable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery manufacturing, in particular to a battery cell assembly and a battery module. BACKGROUND

[0002] With the rapid development of new energy vehicles, the huge market demand increases the demand for automobile batteries, so the production process of the existing automobile batteries needs to be improved or optimized to improve the production efficiency and product quality of the automobile batteries as much as possible to meet the growing market demand.

[0003] Generally, the battery module has a battery cell assembly, and the traditional battery cell assembly simply uses an aluminum fin to dissipate heat from the battery cell, and the heat dissipation effect is limited, and the structure of the traditional battery cell and the aluminum fin is unstable, which also leads to poor heat dissipation effect. CONTENT OF THE UTILITY MODEL

[0004] The application provides a battery cell assembly and a battery module, which aims to solve the problem that the traditional battery cell assembly simply uses an aluminum fin to dissipate heat from the battery cell, and the heat dissipation effect is limited, and the structure of the traditional battery cell and the aluminum fin is unstable, which also leads to poor heat dissipation effect.

[0005] In order to solve the above technical problems, the application provides a battery cell assembly, which comprises a battery cell, an aluminum fin and a bracket.

[0006] The battery cell comprises a battery cell body and a tab, the battery cell body is located in a space enclosed by the aluminum fin, and the battery cell body is attached to the aluminum fin;

[0007] The tab is located at the side of the battery cell body, and the bracket is fixedly installed on the aluminum fin close to the side of the tab.

[0008] Further, the bracket is provided with a slot, and the tab penetrates through the slot.

[0009] Further, the battery cell assembly further comprises a support, the battery cell body comprises a battery cell sealing edge, the battery cell sealing edge is provided with a bending part, the shape of the support matches the shape of the bending part, and the support is used to stabilize the shape structure of the battery cell sealing edge.

[0010] Further, a plurality of mounting holes are arranged on the aluminum fin, a plurality of mounting columns are arranged on the bracket, the mounting holes match the mounting columns, and the bracket and the aluminum fin are fixedly installed through the mounting holes and the mounting columns.

[0011] Further, the aluminum fin comprises a first side plate, a second side plate and a third side plate, and the first side plate and the second side plate are respectively fixedly arranged on the opposite sides of the third side plate.

[0012] Further, the battery cell assembly further comprises a first insulation strip, which is located between the first side plate and the battery cell body.

[0013] Further, the battery cell assembly further comprises a second insulation strip, which is located between the second side plate and the battery cell body.

[0014] Further, the tab is symmetrically arranged on two sides of the battery cell body, and the tab protrudes from the aluminum fin.

[0015] Further, the support is made of foam material.

[0016] In order to achieve the above-mentioned utility model purposes, the utility model provides a battery module, the battery module comprises the battery cell assembly.

[0017] The beneficial effects of the present application are: in the battery cell assembly and the battery module provided by the present application, the battery cell assembly comprises a battery cell, an aluminum fin and a support, the battery cell comprises a battery cell body and a tab, the battery cell body is located in a space enclosed by the aluminum fin, and the battery cell body is attached to the aluminum fin, the tab is located on the side of the battery cell body, and the support is fixedly installed on the side of the aluminum fin close to the tab, the support is used to fix the position of the battery cell on one hand, and is used to dissipate heat for the battery cell on the other hand. In summary, the support forms a heat dissipation system of the battery cell, the support and the aluminum fin, strengthens the heat dissipation effect, and the support also improves the structural stability of the battery cell assembly, and further improves the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0019] Figure 1 is an explosion view of the battery cell assembly of an embodiment of the utility model.

[0020] Marked with: 100, battery cell; 110, battery cell body; 120, battery cell edge; 121, bending part; 122, tab; 200, aluminum fin; 210, first side plate; 211, first insulation strip; 220, second side plate; 221, second insulation strip; 230, third side plate; 231, mounting hole; 300, support; 310, slot; 400, support. DETAILED DESCRIPTION

[0021] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0022] Those skilled in the art can understand that the singular forms "a", "an" and "the" used herein include plural forms unless specifically stated otherwise. It should be further understood that the use of the term "include" in the description of the present application means that a feature, integer, step, operation, element, module, module and / or assembly is present, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, modules, assemblies and / or their combinations. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, "connected" or "coupled" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any module of one or more associated listed items and all combinations.

[0023] Those skilled in the art can understand that unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as that generally understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as such.

[0024] As Figure 1 As shown in the drawings, the present application provides a battery cell 100 assembly, which comprises a battery cell 100, an aluminum fin 200 and a bracket 300. The battery cell 100 comprises a battery cell body 110 and a tab 122. The battery cell body 110 is located in the space enclosed by the aluminum fin 200, and the battery cell body 110 is in close contact with the aluminum fin 200. The tab 122 is located on the side of the battery cell body 110. The bracket 300 is fixedly installed on the side of the aluminum fin 200 close to the tab 122.

[0025] In a specific embodiment, the battery cell 100 is the core part of the battery cell 100 assembly. The battery cell 100 comprises a battery cell body 110 and a tab 122. The battery cell body 110 is rectangular, and the tab 122 is irregularly shaped and symmetrically installed on both sides of the battery cell body 110. In another specific embodiment, the tab 122 can be arranged on a single side of the battery cell body 110. The battery cell body 110 is the main structure for storing electrical energy, while the tab 122 is a component for connecting external circuits to realize the charging and discharging function of the battery cell 100.

[0026] The aluminum fin 200 comprises a first side plate 210, a second side plate 220 and a third side plate 230, all of which are rectangular, and the first side plate 210 and the second side plate 220 are respectively fixed on the opposite sides of the third side plate 230. Preferably, the third side plate 230 is attached to the large face of the battery cell body 110. This structure forms a semi-closed space similar to a "U" shape, which can tightly wrap the battery cell body 110. The space enclosed by the battery cell body 110 and the aluminum fin 200 matches the battery cell body 110, so that the battery cell body 110 can be tightly attached to the aluminum fin 200, and the aluminum fin 200 can better transfer heat to the battery cell body 110.

[0027] The bracket 300 is in the shape of a long strip, and two brackets 300 are symmetrically installed on the aluminum fin 200, and the two brackets 300 are respectively installed on the two sides of the aluminum fin 200 close to the two tabs 122. The bracket 300 has a dual role. On the one hand, the bracket 300 in contact with the battery cell body 110 can prevent the battery cell 100 from moving inside the battery cell 100 assembly, ensuring the stability of the entire battery cell 100 assembly structure. On the other hand, since the bracket 300 is made of a material with good heat conduction performance, such as heat-conducting silica gel, the bracket 300 has good heat dissipation performance. The bracket 300 in contact with the battery cell body 110 can dissipate the heat generated by the battery cell 100 during charging and discharging, effectively reducing the temperature of the battery cell 100.

[0028] In summary, the design of this battery cell 100 assembly has many significant advantages. First, the surrounding structure and tight attachment of the aluminum fin 200 provide good protection for the battery cell body 110, reducing the influence of external factors on the battery cell 100 and improving the safety of the battery cell 100. Second, the setting of the bracket 300 ensures the stability of the battery cell 100 assembly structure and realizes efficient heat dissipation through the construction of the heat dissipation system of the battery cell 100, the aluminum fin 200 and the bracket 300.

[0029] As shown in Figure 1 , the bracket 300 is provided with a slot 310, and the tab 122 penetrates the slot 310.

[0030] In a specific embodiment, the notch 310 on the bracket 300 is a specific structural design, and the notch 310 is located in the middle of the ear of the bracket 300. The shape and size of the notch 310 are adapted to the size and shape of the tab 122. The tab 122 needs to be connected to the external circuit, and the notch 310 provides a precise through channel for the tab 122. After the tab 122 extends from the cell body 110, it can smoothly pass through the bracket 300 through the notch 310 to realize connection with the external circuit. The existence of the notch 310 makes the tab 122 more standardized during installation and use, and improves the stability of the electrical connection of the entire cell 100 assembly.

[0031] In summary, the notch 310 provides a fixed channel for the tab 122, so that the tab 122 can maintain a stable position when connecting to the external circuit, reducing the probability of poor contact caused by factors such as vibration and displacement, thereby improving the stability of the charge and discharge performance of the cell 100 assembly.

[0032] As shown in Figure 1 The cell 100 assembly also includes a support 400, and the cell body 110 includes a cell sealing edge 120, and the cell sealing edge 120 is provided with a bending part 121. The shape of the support 400 matches the shape of the bending part 121, and the support 400 is used to stabilize the shape structure of the cell sealing edge 120.

[0033] In a specific embodiment, the opposite sides of the cell body 110 are provided with the cell sealing edge 120, and the tab 122 is fixedly connected to the edge of the cell sealing edge 120. In order to prevent the cell sealing edge 120 from deforming during actual use, a bending part 121 is provided in the cell sealing edge 120 to strengthen the structural strength of the cell sealing edge 120, and a support 400 is designed. The support 400 is trapezoidal, and the shape of the support 400 accurately matches the shape of the bending part 121. The support 400 can be tightly embedded in the bending part 121 to support the cell sealing edge 120, further strengthening the structural stability of the cell sealing edge 120. The support 400 can be made of a material with certain flexibility and strength. When the cell sealing edge 120 is deformed by external force, the support 400 can provide a reverse supporting force for the bending part 121 by virtue of its own characteristics, thereby maintaining the shape stability of the cell sealing edge 120, and further maintaining the position stability of the tab 122.

[0034] In summary, the design of the support 400 provides a reliable guarantee for the shape and structure stability of the cell sealing edge 120. The stable shape and structure of the cell sealing edge 120 help to ensure the stability of the electrical connection. In actual work, if the cell sealing edge 120 deforms, it may cause the connection point of the tab 122 and the external circuit to loosen, affecting the charge and discharge performance of the cell 100.

[0035] As shown in Figure 1 The aluminum fin 200 is provided with a plurality of mounting holes 231, and the support 300 is provided with a plurality of mounting posts. The mounting holes 231 and the mounting posts are matched, and the support 300 and the aluminum fin 200 are fixedly installed through the mounting holes 231 and the mounting posts.

[0036] In an embodiment, a plurality of mounting holes 231 are arranged in a linear and spaced manner on both sides of the third side plate 230 close to the tab 122. The mounting holes 231 penetrate the third side plate 230, and the number, size and distribution position of the mounting holes 231 are designed according to the installation requirements of the support 300. The mounting post is a columnar structure provided on the support 300 corresponding to the position of the mounting hole 231, and the size and shape thereof are matched with the mounting hole 231. In the assembly process of the battery cell 100 assembly, the mounting post on the support 300 is aligned with the mounting hole 231 on the aluminum fin 200, and then a certain mode such as pressing, riveting, etc. is used to tightly embed the mounting post in the mounting hole 231, so as to realize the firm connection of the support 300 and the aluminum fin 200. This installation mode has high accuracy and reliability, and can ensure the installation position accuracy of the support 300 on the aluminum fin 200, and further ensure the structural stability of the entire battery cell 100 assembly. In the mass production process, the standardized design of the mounting hole 231 and the mounting post facilitates the use of automatic equipment for rapid assembly, and improves the production efficiency.

[0037] In summary, the mounting hole 231 and the mounting post are used to realize the fixed installation of the support 300 and the aluminum fin 200. This design makes the installation operation of the support 300 and the aluminum fin 200 simple and clear, without the need for complex positioning and fixing steps, greatly improving the assembly efficiency. Secondly, the tight fit of the mounting hole 231 and the mounting post can provide reliable connection strength for the support 300 and the aluminum fin 200. When the battery cell 100 assembly is subjected to external forces such as vibration, impact, etc., this connection mode can effectively prevent the relative displacement between the support 300 and the aluminum fin 200, and ensure the structural integrity of the entire battery cell 100 assembly.

[0038] As shown in Figure 1 The battery cell 100 assembly further includes a first insulating strip 211 located between the first side plate 210 and the battery cell body 110. The battery cell 100 assembly further includes a second insulating strip 221 located between the second side plate 220 and the battery cell body 110.

[0039] In a specific embodiment, the first insulating strip 211 is a long strip-shaped component made of a material with good insulating properties. It is placed between the first side plate 210 of the aluminum fin 200 and the cell body 110, and its main function is to prevent electrical short circuit between the cell body 110 and the first side plate 210. The cell body 110 will carry a certain amount of electricity during operation. If it directly contacts the first side plate 210 made of metal material, it may cause short circuit failure due to leakage, etc., affecting the normal work of the battery cell 100 and even causing safety problems. The existence of the first insulating strip 211 builds an insulating barrier between the first side plate 210 and the cell body 110, ensuring the electrical isolation between the cell body 110 and the first side plate 210.

[0040] Similar to the first insulating strip 211, the second insulating strip 221 is also made of a material with good insulating properties, and its shape and size are adapted to the space between the cell body 110 and the second side plate 220. The second insulating strip 221 is placed between the second side plate 220 of the aluminum fin 200 and the cell body 110, and the main purpose is to achieve the electrical isolation between the cell body 110 and the second side plate 220.

[0041] In summary, the first insulating strip 211 and the second insulating strip 221 together prevent the electrical short circuit between the cell body 110 and the aluminum fin 200 in all directions, greatly reducing the potential safety risk. This double insulation protection can effectively avoid equipment damage and safety accidents caused by short circuit of the battery cell 100.

[0042] As shown in Figure 1 , the tabs 122 are symmetrically arranged on both sides of the cell body 110, and the tabs 122 protrude from the aluminum fin 200.

[0043] In a specific embodiment, the tabs 122 are symmetrically arranged on both sides of the cell body 110. This design is to achieve more balanced current transmission. When the battery cell 100 is charging and discharging, the current flows into or out of the cell body 110 from the tabs 122 on both sides, which can make the charge distribution inside the battery cell 100 more uniform, avoiding the problem of local overheating or uneven performance of the battery cell 100 due to the concentration of current on one side. The tabs 122 protrude from the aluminum fin 200 to facilitate connection with external circuits. In actual manufacturing process, the length and shape of the tabs 122 will be designed and adjusted accordingly according to different application requirements and connection processes.

[0044] As shown in Figure 1 , the support 400 is made of foam material.

[0045] In a specific embodiment, the foam is a material with a porous structure, which has good flexibility, elasticity and certain compressive strength. When the support 400 is made of foam material, these characteristics enable the support 400 to well adapt to the shape of the bending portion 121. The flexibility of the foam can ensure that the support 400 can closely fit each bending portion of the bending portion 121, and the elasticity of the support 400 can provide a reverse elastic force when the bending portion 121 is deformed by external force, helping the cell edge 120 to restore to the original shape. At the same time, the compressive strength of the foam can ensure that the support 400 will not be easily compressed and deformed within a certain pressure range, thereby continuously providing stable support for the bending portion 121.

[0046] In order to achieve the purpose of the utility model, in an embodiment, the application further provides a battery module, which comprises the cell 100 assembly of any one of the above embodiments. In this embodiment, the specific structure of the battery module is not limited, as long as the battery module comprises the above-mentioned cell 100 assembly.

[0047] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A battery cell assembly, characterized in that, include: Battery cells, aluminum fins and support frame; The battery cell includes a battery cell body and a tab. The battery cell body is located in the space enclosed by the aluminum fins, and the battery cell body is in contact with the aluminum fins. The electrode tab is located on the side of the main body of the battery cell, and the bracket is fixedly installed on the side of the aluminum wing near the electrode tab.

2. The cell assembly according to claim 1, characterized in that, The bracket has a notch, and the electrode tab passes through the notch.

3. The battery cell assembly according to claim 1, characterized in that, The battery cell assembly also includes a support member. The battery cell body includes a battery cell edge seal. The battery cell edge seal has a bent portion. The shape of the support member matches the shape of the bent portion. The support member is used to stabilize the shape and structure of the battery cell edge seal.

4. The cell assembly according to claim 1, characterized in that, The aluminum wing has a plurality of mounting holes, and the bracket has a plurality of mounting posts. The mounting holes match the mounting posts, and the bracket and the aluminum wing are fixedly installed through the mounting holes and the mounting posts.

5. The cell assembly according to claim 1, characterized in that, The aluminum wing includes a first side plate, a second side plate, and a third side plate, with the first side plate and the second side plate respectively fixed on opposite sides of the third side plate.

6. The cell assembly according to claim 5, characterized in that, The cell assembly also includes a first insulating strip, which is located between the first side plate and the cell body.

7. The cell assembly according to claim 5, characterized in that, The cell assembly also includes a second insulating strip, which is located between the second side plate and the cell body.

8. The cell assembly according to claim 1, characterized in that, The tabs are symmetrically arranged on both sides of the battery cell body, and the tabs protrude from the aluminum fins.

9. The cell assembly according to claim 3, characterized in that, The support component is made of foam.

10. A battery module, characterized in that, Includes the cell assembly as described in any one of claims 1 to 9.

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