Battery module and battery pack

Abstract

The utility model provides a kind of battery module and battery pack, it is related to battery technical field.Battery module includes installation shell, upper layer battery group, lower layer battery group, first heat conduction piece and second heat conduction piece.Between them, installation shell is provided with installation cavity, upper layer battery group, lower layer battery group, first heat conduction piece and second heat conduction piece are all set in installation cavity.Upper layer battery group is attached in the inside top wall of installation shell by first heat conduction piece, lower layer battery group is attached in the inside bottom wall of installation shell by second heat conduction piece, so that the heat of upper layer battery group and lower layer battery group is transferred to installation shell by first heat conduction piece and second heat conduction piece, and is cooled by installation shell, so that in the case of guaranteeing the heat dissipation requirement of battery group, the overall structure of battery module is simplified, and assembly difficulty and manufacturing cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery module and battery pack. Background Technology

[0002] In the power battery industry, battery packs generate a significant amount of heat during operation. If this heat cannot be dissipated effectively and promptly, it will directly impact battery performance, lifespan, and even safety. Therefore, the rational design of the thermal management system is a crucial aspect of battery pack structure development. However, existing battery module heat dissipation structures are complex, significantly increasing manufacturing costs and assembly difficulty. Utility Model Content

[0003] The purpose of this utility model is to provide a battery module and battery pack that can simplify the overall structural design while taking into account heat dissipation requirements, eliminating the need for additional liquid cooling pipes and cooling fans, thereby reducing assembly difficulty and manufacturing costs.

[0004] The embodiments of this utility model are implemented as follows:

[0005] In a first aspect, this utility model provides a battery module, comprising:

[0006] The mounting housing has a mounting cavity;

[0007] Upper battery pack, wherein the upper battery pack is disposed in the mounting cavity;

[0008] The lower battery pack is disposed in the mounting cavity;

[0009] The first thermal conductive element is attached between the top wall of the mounting housing and the upper battery pack.

[0010] The second thermal conductive element is attached between the bottom wall of the mounting housing and the lower battery pack.

[0011] In an optional embodiment, both the upper battery pack and the lower battery pack include a plurality of cylindrical cells, and the axes of the plurality of cylindrical cells are parallel to the top or bottom wall of the mounting housing.

[0012] In an optional embodiment, the mounting housing includes a first housing and a second housing, the first housing and the second housing being connected and together forming the mounting cavity, the cylindrical cells of the upper battery pack being attached to the top wall of the first housing via the first thermal conductive element, and the cylindrical cells of the lower battery pack being attached to the bottom wall of the second housing via the second thermal conductive element.

[0013] In an optional embodiment, the top wall of the first housing is provided with a plurality of first mounting portions, the first mounting portions being arc-shaped and recessed to fit the shape of the cylindrical battery cell, and the plurality of cylindrical battery cells of the upper battery pack are respectively disposed on the plurality of first mounting portions.

[0014] In an optional embodiment, the plurality of first mounting portions are arranged in an array.

[0015] In an optional embodiment, the bottom wall of the second housing is provided with a plurality of second mounting portions, the second mounting portions being arc-shaped and recessed to fit the shape of the cylindrical battery cell, and the plurality of cylindrical battery cells of the lower battery pack are respectively disposed on the plurality of second mounting portions.

[0016] In an optional embodiment, the plurality of second mounting portions are arranged in an array.

[0017] In an optional embodiment, the multiple cylindrical cells of the upper battery pack correspond one-to-one with the multiple cylindrical cells of the lower battery pack and are spaced apart.

[0018] In an optional embodiment, the axes of the plurality of cylindrical cells are arranged in parallel.

[0019] Secondly, the present invention provides a battery pack, including a battery module as described in any of the foregoing embodiments.

[0020] The beneficial effects of the battery module and battery pack provided by this utility model embodiment include: the upper battery pack is attached to the inner top wall of the mounting housing through the first heat-conducting element, and the lower battery pack is attached to the inner bottom wall of the mounting housing through the second heat-conducting element. This allows the heat from the upper and lower battery packs to be transferred to the mounting housing through the first and second heat-conducting elements, and then dissipated through the mounting housing. This simplifies the overall structure of the battery module and reduces assembly difficulty and manufacturing cost while ensuring the heat dissipation requirements of the battery pack. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the battery module structure provided in an embodiment of the present utility model;

[0023] Figure 2 An exploded view of the battery module provided in an embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of the battery module provided in an embodiment of the present utility model.

[0025] Icons: 10-Battery module; 100-Mounting housing; 110-First housing; 111-First mounting part; 120-Second housing; 121-Second mounting part; 200-Upper battery pack; 300-Lower battery pack; 400-First heat conduction component; 500-Second heat conduction component. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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 of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In the power battery industry, battery packs generate a significant amount of heat during operation. If this heat cannot be dissipated effectively and promptly, it will directly impact battery performance, lifespan, and even safety. Therefore, the rational design of the thermal management system is a crucial aspect of battery pack structure development.

[0033] Currently, the mainstream thermal management methods mainly include liquid cooling and air cooling. Liquid cooling systems, by placing liquid cooling plates in direct contact with the battery module and utilizing the circulating coolant to remove heat, offer advantages such as high heat dissipation efficiency and uniform temperature control, and are widely used in high-performance power battery systems. Air cooling systems, on the other hand, rely on fans and exhaust channels to force air convection cooling within the battery pack. However, both liquid and air cooling methods complicate the battery module structure and significantly increase production costs.

[0034] Based on the problems existing in the current technology, please refer to Figures 1 to 3 This utility model provides a battery module applicable to the power battery industry, particularly suitable for battery packs in new energy vehicles. The battery module provided in this embodiment simplifies the overall structural design while meeting heat dissipation requirements, eliminating the need for additional liquid cooling pipes and cooling fans, thus reducing assembly difficulty and manufacturing costs.

[0035] In detail, the battery module 10 includes a mounting housing 100, an upper battery pack 200, a lower battery pack 300, a first heat-conducting component 400, and a second heat-conducting component 500.

[0036] The mounting housing 100 is provided with a mounting cavity, in which the upper battery pack 200, the lower battery cell, the first heat-conducting component 400, and the second heat-conducting component 500 are all disposed.

[0037] In this embodiment, the upper battery pack 200 is attached to the inner top wall of the mounting housing 100 via the first heat-conducting element 400, and the lower battery pack 300 is attached to the inner bottom wall of the mounting housing 100 via the second heat-conducting element 500. This allows the heat from the upper battery pack 200 and the lower battery pack 300 to be transferred to the mounting housing 100 via the first heat-conducting element 400 and the second heat-conducting element 500, and then dissipated by the mounting housing 100. This simplifies the overall structure of the battery module 10 and reduces assembly difficulty and manufacturing cost while ensuring the heat dissipation requirements of the battery pack.

[0038] Furthermore, both the upper battery pack 200 and the lower battery pack 300 include multiple cylindrical cells, and the axes of the multiple cylindrical cells are parallel to the top or bottom wall of the mounting housing 100.

[0039] In other words, the sidewall of the cylindrical cell of the upper battery pack 200 is in close contact with the top wall of the mounting housing 100 through the first heat-conducting element 400, and the sidewall of the cylindrical cell of the lower battery pack 300 is in close contact with the bottom wall of the mounting housing 100 through the second heat-conducting element 500.

[0040] It is understood that the first heat-conducting element 400 and the second heat-conducting element 500 can be made of a flexible material with high thermal conductivity, which can increase the contact area between the cylindrical cell and the top or bottom wall of the mounting housing 100, thereby ensuring the heat dissipation requirements of the cell.

[0041] Specifically, the mounting housing 100 includes a first housing 110 and a second housing 120. The first housing 110 and the second housing 120 are connected and together form a mounting cavity. The cylindrical cells of the upper battery pack 200 are attached to the top wall of the first housing 110, and the cylindrical cells of the lower battery pack 300 are attached to the bottom wall of the second housing 120.

[0042] It is worth mentioning that the first housing 110 and the second housing 120 are detachably connected, which facilitates the assembly and maintenance of the battery pack.

[0043] The cylindrical cells of the upper battery pack 200 are in close contact with the top wall of the first housing 110 through the first heat-conducting element 400, thereby ensuring the heat dissipation performance of the upper battery pack 200. The cylindrical cells of the lower battery pack 300 are in close contact with the bottom wall of the second housing 120 through the second heat-conducting element 500.

[0044] Furthermore, the top wall of the first housing 110 is provided with a plurality of first mounting portions 111, which are concave in an arc shape to fit the shape of the cylindrical battery cell. The plurality of cylindrical battery cells of the upper battery pack 200 are respectively disposed on the plurality of first mounting portions 111.

[0045] In this embodiment, by providing a plurality of arc-shaped recessed first mounting portions 111 on the top wall of the first housing 110 to adapt to the shape of the cylindrical battery cell, the contact area between the cylindrical battery cell and the first housing 110 can be further increased when the cylindrical battery cell is mounted on the first mounting portion 111 via the first heat-conducting element 400, thereby further improving the heat dissipation effect.

[0046] By arranging the multiple first mounting portions 111 in an array, multiple cylindrical cells of the upper battery pack 200 arranged in an array can be adaptively mounted.

[0047] Similarly, the bottom wall of the second housing 120 is provided with a plurality of second mounting portions 121, which are concave in an arc shape to fit the shape of the cylindrical battery cell. The plurality of cylindrical battery cells of the lower battery pack 300 are respectively disposed on the plurality of second mounting portions 121.

[0048] In this embodiment, by providing a plurality of arc-shaped recessed second mounting portions 121 on the bottom wall of the second housing 120 to match the shape of the cylindrical battery cell, the contact area between the cylindrical battery cell and the second housing 120 can be further increased when the cylindrical battery cell is mounted on the second mounting portion 121 via the second heat-conducting element 500, thereby further improving the heat dissipation effect.

[0049] Multiple second mounting sections 121 are arranged in an array to accommodate multiple cylindrical cells of the lower battery pack 300 arranged in an array.

[0050] It is also worth mentioning that multiple first mounting parts 111 correspond one-to-one with multiple second mounting parts 121, and multiple cylindrical cells of the upper battery pack 200 correspond one-to-one with multiple cylindrical cells of the lower battery pack 300 and are spaced apart.

[0051] By spacing the multiple cylindrical cells of the upper and lower battery packs 300, each cell has enough space for air circulation, which helps to dissipate heat more evenly, avoid local overheating, improve overall heat dissipation efficiency, and extend battery life.

[0052] In addition, the one-to-one correspondence and spacing of multiple cylindrical cells in the upper and lower layers makes the position of each cell clearer, which facilitates precise positioning and assembly operations by automated equipment, and also makes it easier for later maintenance and replacement. In other words, this layout is conducive to achieving standardized and modular production processes, improving production efficiency and reducing costs.

[0053] Furthermore, the parallel arrangement of the axes of multiple cylindrical cells ensures a relatively uniform distance between them, reducing the risk of localized overheating and helping to maintain the operating temperature of the entire battery module 10 within a more stable range. The parallel axial arrangement also allows for secure connection between the cylindrical cells using brackets, frames, or other fixing devices, enhancing the mechanical strength of the entire battery module 10 and improving its resistance to impact and vibration.

[0054] Finally, it should be noted that the assembly sequence of the battery module 10 is as follows: First, the upper battery pack 200 and the lower battery pack 300 are assembled and welded together. The second heat-conducting component 500 is attached to the bottom wall of the second housing 120. The upper battery pack 200 and the lower battery pack 300 are placed on the second housing 120 as a whole, and the multiple cylindrical cells of the lower battery pack 300 are aligned one-to-one with the multiple second mounting parts 121 of the second housing 120. The first heat-conducting component 400 is attached to the upper battery pack 200. The first housing 110 is placed on the second housing 120 and the upper battery pack 200, and the multiple cylindrical cells of the upper battery pack 200 are aligned one-to-one with the multiple first mounting parts 111 of the first housing 110. This completes the assembly of the battery module 10.

[0055] In summary, this utility model provides a battery module 10 and a battery pack. The upper battery pack 200 is attached to the inner top wall of the mounting housing 100 via a first heat-conducting element 400, and the lower battery pack 300 is attached to the inner bottom wall of the mounting housing 100 via a second heat-conducting element 500. This allows the heat from the upper battery pack 200 and the lower battery pack 300 to be transferred to the mounting housing 100 via the first heat-conducting element 400 and the second heat-conducting element 500, and then dissipated through the mounting housing 100. This simplifies the overall structure of the battery module 10 and reduces assembly difficulty and manufacturing costs while ensuring the heat dissipation requirements of the battery pack.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery module, characterized in that, include: The mounting housing has a mounting cavity; Upper battery pack, wherein the upper battery pack is disposed in the mounting cavity; The lower battery pack is disposed in the mounting cavity; The first thermal conductive element is attached between the top wall of the mounting housing and the upper battery pack. The second thermal conductive element is attached between the bottom wall of the mounting housing and the lower battery pack.

2. The battery module according to claim 1, characterized in that, Both the upper battery pack and the lower battery pack include multiple cylindrical cells, and the axes of the multiple cylindrical cells are parallel to the top or bottom wall of the mounting housing.

3. The battery module according to claim 2, characterized in that, The mounting housing includes a first housing and a second housing. The first housing and the second housing are connected and together form the mounting cavity. The cylindrical cells of the upper battery pack are attached to the top wall of the first housing through the first heat-conducting element, and the cylindrical cells of the lower battery pack are attached to the bottom wall of the second housing through the second heat-conducting element.

4. The battery module according to claim 3, characterized in that, The top wall of the first housing is provided with a plurality of first mounting portions, which are concave in an arc shape to fit the shape of the cylindrical battery cell. The plurality of cylindrical battery cells of the upper battery pack are respectively disposed on the plurality of first mounting portions.

5. The battery module according to claim 4, characterized in that, The plurality of first mounting parts are arranged in an array.

6. The battery module according to claim 3, characterized in that, The bottom wall of the second housing is provided with a plurality of second mounting portions, which are concave in an arc shape to fit the shape of the cylindrical battery cell. The plurality of cylindrical battery cells of the lower battery pack are respectively disposed on the plurality of second mounting portions.

7. The battery module according to claim 6, characterized in that, The plurality of second mounting parts are arranged in an array.

8. The battery module according to claim 2, characterized in that, The cylindrical cells of the upper battery pack correspond one-to-one with the cylindrical cells of the lower battery pack and are spaced apart.

9. The battery module according to claim 2, characterized in that, The axes of the plurality of cylindrical cells are arranged in parallel.

10. A battery pack, characterized in that, Includes the battery module as described in any one of claims 1-9.

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