Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, and the battery pack comprises a box body which is internally provided with a containing space; the battery cell assembly is arranged in the accommodating space, and the battery cell assembly is provided with a mounting part; the heat insulation sleeve is arranged on the mounting part; part of the connecting piece is connected with the box body, and the other part is connected with the heat insulation sleeve. The heat insulation sleeve is used for isolating heat transfer, so that heat loss is avoided, the heat preservation capacity of the battery cell assembly is improved, the heat management efficiency of the battery is improved, the temperature of the box body is prevented from rising, the overall performance and safety of the battery pack are prevented from being influenced, and the working temperature of the battery pack is maintained within an ideal range in a low-temperature environment; the charge-discharge efficiency and the service life of the battery pack are prevented from being influenced. And meanwhile, the probability of expansion or deformation of a box body material is reduced, and the structural stability and the service life of the battery pack are further improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a battery pack and a vehicle. Background Technology

[0002] Battery packs typically consist of battery cells and a housing, with the battery cells housed within the housing. However, existing battery cells suffer from significant deficiencies in thermal insulation, allowing heat generated during battery operation to easily escape into the housing. This heat loss not only reduces the battery's thermal management efficiency but can also lead to increased housing temperature, consequently affecting the overall performance and safety of the battery pack. Particularly in low-temperature environments, insufficient insulation of the battery cells exacerbates heat loss, making it difficult to maintain the battery pack's operating temperature within the ideal range, thus impacting charge / discharge efficiency and lifespan. Furthermore, heat loss into the housing can cause expansion or deformation of the housing materials, further affecting the battery pack's structural stability and lifespan. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack that improves the heat preservation capability of the battery cell assembly.

[0004] A battery pack according to an embodiment of the present utility model includes: a housing with a receiving space inside; a battery cell assembly disposed in the receiving space and having a mounting portion; a heat insulation sleeve disposed in the mounting portion; and a connector partially connected to the housing and partially connected to the heat insulation sleeve.

[0005] According to an embodiment of the present invention, a heat insulation sleeve is provided between the casing and the cell assembly in the battery pack. This sleeve isolates heat transfer, preventing heat loss and improving the heat preservation capability of the cell assembly. This enhances the battery's thermal management efficiency, prevents the casing temperature from rising, and avoids affecting the overall performance and safety of the battery pack. In low-temperature environments, it maintains the battery pack's operating temperature within an ideal range, preventing impact on the battery pack's charging and discharging efficiency and lifespan. Simultaneously, it reduces the probability of casing material expansion or deformation, further improving the battery pack's structural stability and service life.

[0006] In some embodiments, the heat insulation sleeve includes: a first connecting portion disposed on the mounting portion; and a second connecting portion connected to the first connecting portion and the connector.

[0007] In some embodiments, at least one of the first connecting portion and the second connecting portion is made of a non-metallic material.

[0008] In some embodiments, the first connecting part is constructed as a nylon part or a composite material part with a non-metallic base, and the second connecting part is made of metal.

[0009] In some embodiments, the mounting portion is configured as a mounting hole, the first connecting portion is configured as a first tubular member, the second connecting portion is disposed inside the first tubular member, the second connecting portion is configured as a second tubular member, and the connecting member passes through the second tubular member.

[0010] In some embodiments, the first tubular member is threadedly connected to the mounting hole.

[0011] In some embodiments, there are multiple mounting portions, and the multiple mounting portions are disposed on at least two opposite sides of the battery cell assembly.

[0012] In some embodiments, the battery cell assembly includes: a cold plate, wherein the mounting portion is disposed on the cold plate; and a battery cell disposed on the cold plate; wherein the projection of the battery cell on the cold plate is spaced apart from the mounting plate.

[0013] The vehicle according to an embodiment of the present invention includes the battery pack described above.

[0014] According to the vehicle embodiment of this utility model, a heat insulation sleeve is provided between the battery pack housing and the cell assembly. This sleeve isolates heat transfer, preventing heat loss and improving the heat preservation capacity of the cell assembly. This enhances the battery's thermal management efficiency, prevents the housing temperature from rising, and avoids affecting the overall performance and safety of the battery pack. In low-temperature environments, it maintains the battery pack's operating temperature within an ideal range, preventing impact on the battery pack's charging and discharging efficiency and lifespan. Simultaneously, it reduces the probability of housing material expansion or deformation, further improving the battery pack's structural stability and service life.

[0015] In some embodiments, the vehicle is a heavy-duty truck.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the battery pack structure in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the battery cell assembly in an embodiment of the present invention;

[0020] Figure 3 As an embodiment of this utility model Figure 2 A larger image is shown at point I in the middle.

[0021] Figure 4 This is a cross-sectional view of the heat insulation sleeve in an embodiment of this utility model.

[0022] Figure label:

[0023] 100. Battery pack; 10. Housing; 11. Storage space; 20. Cell assembly; 21. Mounting part; 22. Cold plate; 23. Cell; 30. Heat insulation sleeve; 31. First connecting part; 32. Second connecting part; 40. Connector. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of the same feature, used to distinguish and describe features, without any order or distinction of importance.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0029] The battery pack 100 of this utility model embodiment is described below with reference to the accompanying drawings.

[0030] Reference Figures 1 to 3 According to an embodiment of the present utility model, a battery pack 100 includes: a housing 10, a cell assembly 20, a heat insulation sleeve 30, and a connector 40.

[0031] The housing 10 has a receiving space 11. The battery cell assembly 20 is located in the receiving space 11, and the battery cell assembly 20 has a mounting part 21. The heat insulation sleeve 30 is located in the mounting part 21. The connector 40 is partially connected to the housing 10 and partially connected to the heat insulation sleeve 30.

[0032] The battery cell assembly 20 is located within the housing space 11. The battery cell assembly 20 is fixed within the housing 10 by a connector 40. The connector 40 can be a bolt, a screw, or other connector 40. The connector 40 is connected to the battery cell assembly 20 by a heat insulation sleeve 30. The heat insulation sleeve 30 has the ability to isolate heat transfer, so that heat cannot be transferred between the battery cell assembly 20 and the housing 10.

[0033] Battery packs typically consist of battery cells and a housing, with the battery cells housed within the housing. However, existing battery cells suffer from significant deficiencies in thermal insulation, allowing heat generated during battery operation to easily escape into the housing. This heat loss not only reduces the battery's thermal management efficiency but can also lead to increased housing temperature, consequently affecting the overall performance and safety of the battery pack. Particularly in low-temperature environments, insufficient insulation of the battery cells exacerbates heat loss, making it difficult to maintain the battery pack's operating temperature within the ideal range, thus impacting charge / discharge efficiency and lifespan. Furthermore, heat loss into the housing can cause expansion or deformation of the housing materials, further affecting the battery pack's structural stability and lifespan.

[0034] In this embodiment of the present invention, a heat insulation sleeve 30 is provided between the housing 10 and the battery cell assembly 20. The heat insulation sleeve 30 is used to isolate the transfer of heat, thereby preventing heat loss and improving the heat preservation capability of the battery cell assembly 20.

[0035] Specifically, the heat insulation sleeve 30 may have heat insulation capability in part of its structure, or the heat insulation sleeve 30 as a whole may have heat insulation capability.

[0036] According to an embodiment of the present invention, a heat insulation sleeve 30 is provided between the housing 10 and the cell assembly 20 in the battery pack 100. The heat insulation sleeve 30 isolates heat transfer, thereby preventing heat loss, improving the heat preservation capability of the cell assembly 20, enhancing the thermal management efficiency of the battery, preventing the housing 10 from overheating, and avoiding impact on the overall performance and safety of the battery pack 100. In low-temperature environments, it maintains the operating temperature of the battery pack 100 within an ideal range, preventing impact on the charging and discharging efficiency and lifespan of the battery pack 100. Simultaneously, it reduces the probability of material expansion or deformation of the housing 10, further improving the structural stability and service life of the battery pack 100.

[0037] Reference Figures 1 to 4 In some embodiments, the heat insulation sleeve 30 includes a first connecting portion 31 and a second connecting portion 32.

[0038] The first connecting part 31 is provided on the mounting part 21. The second connecting part 32 connects the first connecting part 31 and the connector 40.

[0039] The heat insulation sleeve 30 is divided into two parts: a first connecting part 31 and a second connecting part 32 are connected to each other. The first connecting part 31 is connected to the battery cell assembly 20, and the second connecting part 32 is connected to the housing 10, thereby fixing the battery cell assembly 20 inside the housing 10.

[0040] In the above solution, by splitting the heat insulation sleeve 30 into a first connecting part 31 and a second connecting part 32, the design and molding of the heat insulation sleeve 30 are facilitated, efficiency is improved, and costs are reduced.

[0041] Specifically, the heat insulation sleeve 30 may also include a third connecting part, a fourth connecting part, or more connecting parts, which will not be elaborated here.

[0042] In some embodiments, at least one of the first connecting portion 31 and the second connecting portion 32 is made of a non-metallic material.

[0043] Among them, at least one of the first connecting part 31 and the second connecting part 32 is made of non-metallic material, and the non-metallic material plays a role in heat insulation and isolates heat transfer.

[0044] In the above solution, by setting at least one of the first connecting part 31 and the second connecting part 32 to be made of non-metallic material, the material properties are fully utilized, the structure is simplified, and the versatility is improved.

[0045] Specifically, at least one of the first connecting part 31 and the second connecting part 32 is made of non-metallic material. That is to say, the first connecting part 31 may be made of non-metallic material and the second connecting part 32 may be made of metallic material, or the first connecting part 31 may be made of metallic material and the second connecting part 32 may be made of non-metallic material, or both the first connecting part 31 and the second connecting part 32 may be made of non-metallic material.

[0046] In some embodiments, the first connecting part 31 is constructed as a nylon part or a composite material part with a non-metallic base, and the second connecting part 32 is made of metal.

[0047] The first connecting part 31 is constructed of nylon or a composite material with a non-metallic base, while the second connecting part 32 is made of metal. The nylon or non-metallic composite material in this part provides heat insulation, which prevents heat transfer between the battery cell assembly 20 and the housing 10.

[0048] In the above solution, by setting the material of the second connecting part 32 to metal, the metal second connecting part 32 connects to the connecting piece 40, which improves the connection stability. Furthermore, by utilizing the material properties of the nylon or composite material parts themselves, the reliability is improved while providing heat insulation.

[0049] Specifically, the composite parts are made of PP (polypropylene) with a high content of glass fiber (≥40%).

[0050] Reference Figure 3 In some embodiments, the mounting portion 21 is configured as a mounting hole, the first connecting portion 31 is configured as a first tubular member, the second connecting portion 32 is disposed inside the first tubular member, the second connecting portion 32 is configured as a second tubular member, and the connector 40 passes through the second tubular member.

[0051] The first connecting part 31 is constructed as a first tubular member, which passes through the mounting hole, the second tubular member passes through the first tubular member, and the connecting member 40 passes through the second tubular member.

[0052] In the above scheme, by setting mounting holes, the first connecting part 31 is constructed as a first tubular component and the second connecting part 32 is constructed as a second tubular component. The overall structure is easier to form and easier to assemble, thereby improving production efficiency.

[0053] Specifically, the first tubular component and the second tubular component are joined together by in-mold injection molding.

[0054] Reference Figure 3 In some embodiments, the first tubular member is threadedly connected to the mounting hole.

[0055] The first tubular component is inserted into the mounting hole, which is threaded. The outer wall of the first tubular component is also threaded. The first tubular component is threaded to the mounting hole, so that the connector 40 is fixed in the mounting hole.

[0056] In the above scheme, by setting the first tubular component to be threadedly connected to the mounting hole, the first tubular component is easily fixed, which enables the first tubular component to be quickly installed on the cell assembly 20, thereby improving the assembly efficiency.

[0057] Reference Figure 1 , Figure 2 In some embodiments, there are multiple mounting portions 21, which are disposed on at least two opposite sides of the cell assembly 20.

[0058] The battery cell assembly 20 has multiple mounting parts 21. The multiple mounting parts 21 are located on at least two opposite sides of the battery cell assembly 20. The multiple mounting parts 21 are provided with corresponding connectors 40. The connectors 40 are connected to the housing 10, thereby fixing the battery cell assembly 20 inside the housing 10.

[0059] In the above scheme, by providing multiple mounting parts 21 on at least two opposite sides of the cell assembly 20, and using the multiple mounting parts 21 to install the connector 40, the cell assembly 20 is subjected to forces from multiple directions, which improves the connection stability and makes the cell assembly 20 more stable.

[0060] Specifically, multiple mounting portions 21 are provided on the left and right sides of the battery cell assembly 20, or multiple mounting portions 21 are provided on the front and rear sides of the battery cell assembly 20, or mounting portions 21 are provided on all four sides of the battery cell assembly 20.

[0061] More specifically, there are 12 installation sections 21, which provide higher support for the battery cell assembly 20.

[0062] Reference Figure 2 In some embodiments, the cell assembly 20 includes a cold plate 22 and a cell 23.

[0063] Mounting section 21 is disposed on cold plate 22. Battery cell 23 is disposed on cold plate 22. The projection of battery cell 23 on cold plate 22 is spaced apart from that on mounting plate.

[0064] The battery cell 23 is mounted on the cold plate 22, which has the ability to regulate temperature, thereby regulating the temperature of the battery cell 23. The mounting part 21 is set on the cold plate 22, and the connector 40 connects the cold plate 22 and the housing 10.

[0065] In the above scheme, the mounting part 21 is set on the cold plate 22, which has a large usable area, thus facilitating the positioning of the connector 40. At the same time, the projection of the battery cell 23 on the cold plate 22 is spaced apart from the mounting plate, providing a certain installation space for the connector 40, avoiding interference between the battery cell 23 and the connector 40, and improving the ease of assembly.

[0066] The vehicle according to an embodiment of the present invention includes the battery pack 100 described above.

[0067] According to the vehicle embodiment of this utility model, a heat insulation sleeve 30 is provided between the battery pack 100, the housing 10, and the cell assembly 20. The heat insulation sleeve 30 isolates heat transfer, thereby preventing heat loss, improving the heat preservation capacity of the cell assembly 20, enhancing the thermal management efficiency of the battery, preventing the housing 10 from overheating, and avoiding impact on the overall performance and safety of the battery pack 100. In low-temperature environments, it maintains the operating temperature of the battery pack 100 within an ideal range, preventing impact on the charging and discharging efficiency and lifespan of the battery pack 100. Simultaneously, it reduces the probability of material expansion or deformation of the housing 10, further improving the structural stability and service life of the battery pack 100.

[0068] In some specific embodiments, the vehicle is a heavy-duty truck, which improves the targeting.

[0069] Other configurations and operations of the battery pack 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0070] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized by, The application relates to a battery pack. The battery pack comprises: a box (10) provided with a containing space (11) inside; an electric core assembly (20) arranged in the containing space (11), the electric core assembly (20) being provided with a mounting portion (21); a heat insulation sleeve (30) arranged in the mounting portion (21); 2. The battery pack of claim 1, wherein, a connecting piece (40) partially connected with the box (10) and partially connected with the heat insulation sleeve (30). The heat insulation sleeve (30) comprises: a first connecting portion (31) arranged in the mounting portion (21); 3. The battery pack of claim 2, wherein, a second connecting portion (32) connected with the first connecting portion (31) and the connecting piece (40).

4. The battery pack of claim 3, wherein, The material of at least one of the first connecting portion (31) and the second connecting portion (32) is non-metal.

5. The battery pack of claim 2, wherein, The first connecting portion (31) is configured as a nylon piece or a composite piece with non-metal as a base material, and the material of the second connecting portion (32) is metal.

6. The battery pack of claim 5, wherein, The mounting portion (21) is configured as a mounting hole, the first connecting portion (31) is configured as a first tubular piece, the second connecting portion (32) is arranged in the first tubular piece, the second connecting portion (32) is configured as a second tubular piece, and the connecting piece (40) is arranged in the second tubular piece.

7. The battery pack of claim 5, wherein, The first tubular piece is threadedly connected with the mounting hole.

8. The battery pack of any one of claims 1-7, wherein, The mounting portion (21) is provided in at least two opposite sides of the electric core assembly (20). The electric core assembly (20) comprises: a cold plate (22) provided with the mounting portion (21); an electric core (23) arranged on the cold plate (22); wherein 9. A vehicle characterized by comprising: the projection of the electric core (23) on the cold plate (22) is arranged to be spaced from the mounting portion (21).

10. The vehicle of claim 9, wherein, The battery pack comprises any one of claims 1 to 8. The vehicle is a heavy truck.

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