Air-cooled battery module

Abstract

The application discloses a forced air cooling battery module, which comprises a shell, an electric core, a heat-conducting sheet and a forced air cooling heat dissipation device. A part of the heat-conducting sheet is arranged in the shell, and the other part of the heat-conducting sheet extends out of the shell. The electric core is arranged in the shell and at least partially contacts the heat-conducting sheet. The forced air cooling heat dissipation device is arranged outside the shell and contacts the heat-conducting sheet outside the shell. The forced air cooling battery module can guarantee heat dissipation, simplify the structure of the battery module and improve the sealing performance of the battery module.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and in particular to an air-cooled battery module. Background Technology

[0002] With the development of new energy technologies, energy storage devices that use batteries for energy storage are being increasingly used in people's lives.

[0003] During the charging and discharging process, battery packs generate heat. Therefore, in order to improve battery efficiency and extend battery life, it is necessary to dissipate heat from the battery packs in energy storage devices.

[0004] In existing technologies, air cooling is generally used to dissipate heat from energy storage devices. In air-cooled battery modules, harmonica tubes are typically inserted between the cells. Heat exchange occurs through air convection flowing into the harmonica tubes. In series air cooling, the cooling air is gradually heated during its flow, and the temperature difference between the air and the individual battery cells gradually decreases. This results in poorer heat dissipation for cells near the outlet side compared to the inlet side, leading to uneven temperature distribution within the battery pack. While parallel air cooling can ensure uniform flow through special designs, its complex structure and high design difficulty mean that localized temperature unevenness may still occur in practical applications, affecting the overall performance and lifespan consistency of the battery pack.

[0005] At the same time, in order to ensure the heat dissipation effect of the air-cooling system, air circulation channels need to be opened on the battery module casing. However, this also increases the difficulty of sealing the battery module, making it difficult to effectively prevent external impurities such as dust and moisture from entering the battery module and affecting its performance and safety. If the air introduced by the air-cooling system contains moisture or other conductive impurities, it may affect the insulation performance of the battery module, increase electrical safety risks, and cause safety accidents. Utility Model Content

[0006] This invention provides an air-cooled battery module that simplifies the battery module's structure and improves its sealing performance while ensuring heat dissipation.

[0007] This utility model provides an air-cooled battery module, including a housing, a battery cell, a heat-conducting sheet, and an air-cooling heat dissipation device. A portion of the heat-conducting sheet is disposed inside the housing, and another portion extends outside the housing. The battery cell is disposed inside the housing, and at least a portion of it is in contact with the heat-conducting sheet. The air-cooling heat dissipation device is disposed outside the housing and is in contact with the heat-conducting sheet outside the housing.

[0008] Furthermore, the housing includes a first housing and a second housing, with the heat-conducting sheet extending from between the first housing and the second housing.

[0009] Furthermore, the second housing is the bottom plate of the housing, the first housing is placed on the bottom plate, the heat-conducting sheet is disposed on the bottom plate, the bottom of the battery cell is in contact with the heat-conducting sheet, the air-cooled heat dissipation device is supported on the bottom plate and connected to the heat-conducting sheet.

[0010] Furthermore, the area of ​​the base plate is larger than the area of ​​the opening on the first housing. When the first housing is combined with the base plate, the base plate will form a support space for the air-cooled heat dissipation device outside the first housing.

[0011] Furthermore, the base plate protrudes from one end of the housing outside the first housing, and the air-cooled heat dissipation device is disposed on one end of the housing.

[0012] Furthermore, the base plate protrudes from the outside of the first housing on all four sides, and the air-cooled heat dissipation device is provided on all four sides of the housing.

[0013] Furthermore, a heat-conducting plate is provided on the side wall of the battery cell, and the heat-conducting plate connected to the side wall of the battery cell extends out from between the base plate and the first housing.

[0014] Furthermore, a sealing ring is formed between the first housing and the heat-conducting sheet.

[0015] Furthermore, the heat-conducting sheet is a graphene coating applied to the second housing.

[0016] Furthermore, the air-cooled heat dissipation device is a heat dissipation fin.

[0017] In summary, this invention utilizes a heat-conducting plate inside the housing that allows heat to escape to the outside, with a heat-dissipating device in contact with the heat-conducting plate on the outside of the housing. When the battery module is operating, the heat generated by the battery cells is led out to the outside of the housing through the heat-conducting plate in contact with the cells. Since the heat-dissipating device is in contact with the heat-conducting plate on the outside of the housing, when air passes through the heat-dissipating device from the outside of the housing, it can carry away the heat inside the housing, thus completing heat dissipation. Although heat dissipation in this embodiment is achieved through air cooling, the air-cooled battery module does not require a harmonica tube, nor does it need air inlets and outlets on the housing. Therefore, this air-cooled battery module simplifies the battery module structure and improves its sealing performance while ensuring heat dissipation.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The diagram shown is an axial side view of the air-cooled battery module provided in the first embodiment of this utility model.

[0021] Figure 2 As shown Figure 1 Exploded view of the structure of the wind-cooled battery module.

[0022] Figure 3 The diagram shown is an axial side view of the air-cooled battery module provided in the second embodiment of this utility model. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0028] This invention provides an air-cooled battery module that simplifies the battery module's structure and improves its sealing performance while ensuring heat dissipation.

[0029] like Figure 1 and Figure 2 As shown, the air-cooled battery module provided in the first embodiment of this utility model includes a housing 10, a battery cell 20, a heat-conducting sheet 30, and an air-cooling heat dissipation device 40. A portion of the heat-conducting sheet 30 is disposed inside the housing 10, and another portion extends outside the housing 10. The battery cell 20 is disposed inside the housing 10, and at least a portion of it is in contact with the heat-conducting sheet 30. The air-cooling heat dissipation device 40 is disposed outside the housing 10 and is in contact with the heat-conducting sheet 30 outside the housing 10.

[0030] In this embodiment, a heat-conducting plate 30 that can lead out of the housing 10 is provided inside the housing 10, and a wind-cooled heat dissipation device 40 is placed in contact with the heat-conducting plate 30 on the outside of the housing 10. When the battery module is working, the heat generated by the battery cell 20 is led out to the outside of the housing 10 through the heat-conducting plate 30 in contact with the battery cell 20. Since the wind-cooled heat dissipation device 40 is in contact with the heat-conducting plate 30 on the outside of the housing 10, when air passes through the wind-cooled heat dissipation device 40 from the outside of the housing 10, the heat inside the housing 10 can be carried away by the wind-cooled heat dissipation device 40, thereby completing the heat dissipation. In this embodiment, although heat dissipation is achieved through air cooling, the wind-cooled battery module does not need to be equipped with a harmonica tube, nor does it need to be equipped with an air inlet and an air outlet on the housing 10. Therefore, the wind-cooled battery module can simplify the structure of the battery module and improve the sealing performance of the battery module while ensuring heat dissipation.

[0031] Furthermore, in this embodiment, the housing 10 includes at least a first housing 11 and a second housing 12. A heat-conducting plate 30 extends outside the housing from between the first housing 11 and the second housing 12. The second housing 12 can be the base plate of the housing 10, with the first housing 11 covering the base plate, the heat-conducting plate 30 disposed on the base plate, and the bottom of the battery cell 20 contacting the heat-conducting plate 30. A fan-cooled heat dissipation device 40 is supported on the base plate and connected to the heat-conducting plate 30.

[0032] In order to support the air-cooled heat dissipation device 40, the area of ​​the base plate can be larger than the area of ​​the opening on the first housing 11. When the first housing 11 is combined with the base plate, the base plate will form a support space for the air-cooled heat dissipation device 40 outside the first housing 11.

[0033] In this embodiment, the base plate protrudes from one end of the first housing 11 outside the first housing 11, and the air-cooled heat dissipation device 40 is located on one end of the housing 10. That is, the heat-conducting sheet 30 leads the heat generated on the battery cell 20 to one end of the housing 10, and the air-cooled heat dissipation device 40 at that end completes the heat dissipation.

[0034] Furthermore, in this embodiment, the heat-conducting sheet 30 can be a graphene coating directly coated on the second housing 12. The air-cooled heat dissipation device 40 can be a heat dissipation fin.

[0035] To ensure sealing performance, a sealing ring 50 is provided between the first housing 11 and the heat-conducting plate 30. The side wall of the first housing 11 is bent outward at one end facing the second housing 12 to form a connecting edge 111. A connector (not shown) passes through the connecting edge 111 and the sealing ring 50 and is connected to the first housing 11 to complete the sealing of the housing 10.

[0036] like Figure 3 As shown, the air-cooled battery module provided in the second embodiment of this utility model is basically the same as that in the first embodiment, except that in this embodiment, the air-cooled heat dissipation device 40 can be located around the perimeter of the housing 10. That is, when the first housing 1 is combined with the bottom plate, the perimeter of the bottom plate protrudes outside the first housing 11.

[0037] Furthermore, in this embodiment, the heat-conducting sheet 30 is not limited to contacting the bottom of the battery cell 20; it can also be disposed on the side wall of the battery cell 20 and led out from between the bottom plate and the first housing 11.

[0038] In summary, in this invention, a heat-conducting plate 30 that can lead out of the housing 10 is provided inside the housing 10, and a wind-cooled heat dissipation device 40 is placed in contact with the heat-conducting plate 30 outside the housing 10. When the battery module is working, the heat generated by the cell 20 is led out of the housing 10 through the heat-conducting plate 30 in contact with the cell 20. Since the wind-cooled heat dissipation device 40 is in contact with the heat-conducting plate 30 outside the housing 10, when air passes through the wind-cooled heat dissipation device 40 from outside the housing 10, the heat inside the housing 10 can be carried away by the wind-cooled heat dissipation device 40, thereby completing heat dissipation. In this embodiment, although heat dissipation is achieved through air cooling, the wind-cooled battery module does not need to have a harmonica tube, nor does it need to have an air inlet and outlet on the housing 10. Therefore, the wind-cooled battery module can simplify the structure of the battery module and improve the sealing performance of the battery module while ensuring heat dissipation.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A wind-cooled battery module, characterized in that: The device includes a housing, a battery cell, a heat-conducting plate, and a fan-cooled heat dissipation device. A portion of the heat-conducting plate is disposed inside the housing, and another portion extends outside the housing. The battery cell is disposed inside the housing, and at least a portion of it is in contact with the heat-conducting plate. The fan-cooled heat dissipation device is disposed outside the housing and is in contact with the heat-conducting plate outside the housing.

2. The air-cooled battery module according to claim 1, characterized in that: The housing includes a first housing and a second housing, and the heat-conducting plate extends from between the first housing and the second housing.

3. The air-cooled battery module according to claim 2, characterized in that: The second housing is the bottom plate of the housing, the first housing is placed on the bottom plate, the heat-conducting sheet is placed on the bottom plate, the bottom of the battery cell is in contact with the heat-conducting sheet, the air-cooled heat dissipation device is supported on the bottom plate and connected to the heat-conducting sheet.

4. The air-cooled battery module according to claim 3, characterized in that: The area of ​​the base plate is larger than the area of ​​the opening on the first housing. When the first housing is combined with the base plate, the base plate will form a support space for the air-cooled heat dissipation device outside the first housing.

5. The air-cooled battery module according to claim 4, characterized in that: The base plate protrudes from one end of the housing outside the first housing, and the air-cooled heat dissipation device is disposed on one end of the housing.

6. The air-cooled battery module according to claim 4, characterized in that: The base plate protrudes from the outside of the first housing on all four sides, and the air-cooled heat dissipation device is provided on all four sides of the housing.

7. The air-cooled battery module according to claim 6, characterized in that: The heat-conducting plate is provided on the side wall of the battery cell, and the heat-conducting plate connected to the side wall of the battery cell extends out from between the base plate and the first housing.

8. The air-cooled battery module according to claim 3, characterized in that: A sealing ring is formed between the first housing and the heat-conducting sheet.

9. The air-cooled battery module according to claim 1, characterized in that: The heat-conducting sheet is a graphene coating applied to the second housing.

10. The air-cooled battery module according to claim 1, characterized in that: The air-cooled heat dissipation device is a heat sink fin.

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