Shell and battery pack

Abstract

The utility model discloses a shell and a battery pack, which are used for the battery pack and comprise a cooling plate, and a mounting groove is formed in one side of the cooling plate in the thickness direction and used for mounting a battery module of the battery pack. According to the shell disclosed by the utility model, the cooling plate forms the main body structure of the shell, so that the cooling plate can be used as the main body structure of the shell for mounting and fixing the battery module on one hand, and can be used for cooling the battery module on the other hand, so that the cooling plate is dual-purpose, the structure of the shell is simplified, and the cost is reduced. The corresponding installation operation process is simplified, the production and installation efficiency is improved, and meanwhile the cooling requirement of the battery module is met.

Description

Technical Field

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

[0002] The lower housing is a crucial component of the battery pack. Together with the upper housing and other parts, it forms a sealed system that isolates the internal components from the external environment. Its main functions include providing mounting and securing for components such as the upper housing, modules, BDU, BMS, high-voltage connections, low-voltage connections, and thermal management system; bearing the load of the entire battery pack and providing sealing and safety protection; facilitating the connection between the battery pack and the vehicle; and providing bottom protection for the vehicle.

[0003] Currently, the design of the lower casing needs to take heat dissipation into account. Generally, it is necessary to set up and connect a liquid cooling plate for heat dissipation. The cooling method of connecting the liquid cooling plate makes the lower casing structure cumbersome, the installation and connection operation complicated, and the production and installation efficiency low. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a housing that simplifies the housing structure, simplifies the corresponding installation process, improves production and installation efficiency, and simultaneously meets the cooling requirements of the battery module.

[0005] This utility model also proposes a battery pack, including the aforementioned housing.

[0006] According to an embodiment of the present invention, the housing is used for a battery pack and includes: a cooling plate, wherein one side of the cooling plate in the thickness direction has a mounting groove for mounting the battery module of the battery pack.

[0007] According to the embodiment of this utility model, the housing has a mounting groove on one side of the cooling plate in the thickness direction for mounting the battery module of the battery pack. This makes the cooling plate form the main structure of the housing. The cooling plate can serve as the main structure of the housing for mounting and fixing the battery module, and can also be used for cooling the battery module. Thus, the cooling plate has two uses, which simplifies the structure of the housing, simplifies the corresponding installation operation process, improves the efficiency of production and installation, and meets the cooling requirements of the battery module.

[0008] In some embodiments of this utility model, the cooling plate includes an inner liner plate and a flow channel plate stacked and connected along the thickness direction of the cooling plate. The inner liner plate includes a first plate body, the flow channel plate includes a second plate body, and the mounting groove is located on the side of the first plate body opposite to the second plate body.

[0009] In some embodiments of this utility model, the side of the first plate facing the second plate has a first protrusion corresponding to the position of the mounting groove, and the side of the second plate facing the first plate has a clearance groove. The first protrusion is adapted to be disposed in the clearance groove, and the clearance groove and the mounting groove are disposed opposite to each other in the thickness direction of the cooling plate.

[0010] In some embodiments of this utility model, the side of the second plate away from the first plate has a second protrusion corresponding to the position of the clearance groove.

[0011] In some embodiments of this utility model, the side of the first plate away from the second plate has a third protrusion, the third protrusion being disposed at the edge of the groove of the mounting groove, and the side of the second plate facing the first plate has a fourth protrusion, the third protrusion and the fourth protrusion being disposed opposite to each other.

[0012] In some embodiments of this utility model, the housing further includes a reinforcing plate, which is connected to the side of the cooling plate opposite to the mounting groove and extends along the width or length direction of the cooling plate.

[0013] In some embodiments of this utility model, the reinforcing plate extends along one of the length and width directions of the cooling plate, and there are two reinforcing plates, which are respectively disposed on both sides of the other direction of the length and width directions of the cooling plate.

[0014] In some embodiments of this utility model, the thickness of the first plate is 1.15mm-1.25mm; and / or, the thickness of the second plate is 1.15mm-1.25mm.

[0015] In some embodiments of this utility model, the housing further includes a crossbeam, which is disposed in the mounting groove and connected to the inner wall of the mounting groove.

[0016] The battery pack according to an embodiment of the present invention includes the aforementioned housing.

[0017] According to the battery pack of this utility model embodiment, by setting the above-mentioned shell, the cooling plate has a mounting groove on one side in the thickness direction for mounting the battery module of the battery pack, so that the cooling plate forms the main structure of the shell. This allows the cooling plate to serve as the main structure of the shell for mounting and fixing the battery module, and also for cooling the battery module. Thus, the cooling plate has two uses, which simplifies the structure of the shell, simplifies the corresponding installation operation process, improves the efficiency of production and installation, and meets the cooling requirements of the battery module.

[0018] 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

[0019] 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:

[0020] Figure 1 This is an exploded view of the casing according to an embodiment of the present utility model.

[0021] Figure label:

[0022] 10. Shell;

[0023] 1. Cooling plate; 11. Inner liner plate; 111. Mounting groove; 112. First protrusion; 113. Third protrusion; 114. First plate body; 12. Flow channel plate; 121. Clearance groove; 122. Second protrusion; 123. Fourth protrusion; 124. Second plate body;

[0024] 2. Reinforcing plate; 21. First connecting part; 22. Second connecting part; 23. Third connecting part;

[0025] 3. Crossbeam. Detailed Implementation

[0026] 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.

[0027] 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," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. 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 following is for reference. Figure 1 Description of housing 10 according to an embodiment of the present utility model.

[0030] like Figure 1 As shown, the housing 10 according to an embodiment of the present invention is used for a battery pack and includes a cooling plate 1.

[0031] Specifically, refer to Figure 1 The cooling plate 1 has a mounting groove 111 on one side along its thickness for mounting the battery module of the battery pack. It is understood that by providing the mounting groove 111 on one side of the cooling plate 1 along its thickness, the battery module can be mounted, making the cooling plate 1 a main structure of the housing 10. Thus, the cooling plate 1 serves two purposes: firstly, as the main structure of the housing 10 for mounting and fixing the battery module; and secondly, for cooling the battery module. This allows the cooling plate 1 to serve a dual purpose, simplifying the structure of the housing 10, simplifying the installation process, improving production and installation efficiency, and simultaneously meeting the cooling requirements of the battery module.

[0032] According to the embodiment of the present invention, the housing 10 has a mounting groove 111 on one side of the cooling plate 1 in the thickness direction for mounting the battery module of the battery pack, so that the cooling plate 1 forms the main structure of the housing 10. This allows the cooling plate 1 to serve as the main structure of the housing 10 for mounting and fixing the battery module, and also for cooling the battery module. Thus, the cooling plate 1 has two uses, which simplifies the structure of the housing 10, simplifies the corresponding installation operation process, improves the efficiency of production and installation, and meets the cooling requirements of the battery module.

[0033] In some embodiments of this utility model, such as Figure 1 As shown, the cooling plate 1 includes an inner liner plate 11 and a flow channel plate 12 stacked and connected along the thickness direction of the cooling plate 1. The inner liner plate 11 includes a first plate body 114, and the flow channel plate 12 includes a second plate body 124. The mounting groove 111 is provided on the side of the first plate body 114 away from the second plate body 124.

[0034] It is understood that the flow channel plate 12 has a flow channel groove on the side facing away from the inner liner plate 11, and a flow channel protrusion on the side of the flow channel plate 12 facing the inner liner plate 11 corresponding to the flow channel groove. That is, the flow channel groove is formed by stamping on the flow channel plate 12, and a cooling flow channel is formed between the flow channel protrusion and the inner liner plate 11, thereby facilitating the flow of coolant in the cooling flow channel and achieving cooling of the battery module. In addition, the inner liner plate 11 or the flow channel plate 12 is provided with an inlet and an outlet (not shown), thereby facilitating the circulation of coolant.

[0035] It should be noted that the inner liner plate 11 and the flow channel plate 12 can be made of aluminum, which facilitates the weight reduction of the housing 10 and can improve the structural strength of the housing 10.

[0036] In some embodiments of this utility model, such as Figure 1 As shown, the side of the first plate 114 facing the second plate 124 has a first protrusion 112 corresponding to the mounting groove 111, and the side of the second plate 124 facing the first plate 114 has a relief groove 121. The first protrusion 112 is adapted to be disposed in the relief groove 121. The relief groove 121 and the mounting groove 111 are disposed opposite to each other in the thickness direction of the cooling plate 1.

[0037] It is understandable that, since the first plate 114 is a single piece, the side of the first plate 114 facing the second plate 124 has a first protrusion 112 corresponding to the mounting groove 111. It can be seen that the mounting groove 111 is formed by stamping on the first plate 114. Therefore, compared with forming the mounting groove by splicing multiple sheet metal parts, the connection operation between multiple sheet metal parts can be reduced, thereby simplifying the installation operation and improving the production and installation efficiency.

[0038] An avoidance groove 121 is provided on the side of the second plate 124 facing the first plate 114, so as to avoid the first protrusion 112, so that the first plate 114 and the second plate 124 can be smoothly installed and connected. The end of the first protrusion 112 facing the avoidance groove 121 is connected to the bottom wall of the avoidance groove 121 (welding, bonding, etc.).

[0039] In some embodiments of this utility model, such as Figure 1 As shown, the side of the second plate 124 facing away from the first plate 114 has a second protrusion 122 corresponding to the position of the clearance groove 121. This allows the clearance groove 121 to be formed by stamping on the second plate 124, thereby further simplifying the installation operation and improving production and installation efficiency.

[0040] In some embodiments of this utility model, such as Figure 1As shown, the side of the first plate 114 facing away from the second plate 124 has a third protrusion 113, which is located at the edge of the groove of the mounting groove 111. The side of the second plate 124 facing the first plate 114 has a fourth protrusion 123, and the third protrusion 113 and the fourth protrusion 123 are arranged opposite to each other.

[0041] Understandably, the placement of the third protrusion 113 and the fourth protrusion 123 provides more installation space for the connectors, liquid inlet and liquid outlet, thus facilitating the installation of the connectors, liquid inlet and liquid outlet, and enabling the current output of the battery module and the input and output of coolant.

[0042] Among them, the third protrusion 113 consists of multiple protrusions spaced apart in the circumferential direction along the edge of the groove of the mounting groove 111, and the fourth protrusion 123 consists of multiple corresponding protrusions, so that the multiple third protrusions 113 (fourth protrusions 123) can be respectively equipped with connectors, liquid inlets and liquid outlets, etc., avoiding installation interference between connectors and liquid inlets and liquid outlets.

[0043] In some embodiments of this utility model, such as Figure 1 As shown, the housing 10 also includes a reinforcing plate 2, which is connected to the side of the cooling plate 1 opposite to the mounting groove 111 and extends along the width or length direction of the cooling plate 1. The reinforcing plate 2 is connected to the cooling plate 1 by welding, fastener connection, and / or bonding, thereby improving the structural strength of the housing 10 and enhancing the protection of the battery module. The reinforcing plate 2 can be made of aluminum, which facilitates the weight reduction of the housing 10 and improves its structural strength.

[0044] Furthermore, such as Figure 1 As shown, the cooling plate 1 includes a first plate 114 and a second plate 124 stacked and connected along the thickness direction of the cooling plate 1. A mounting groove 111 is located on the side of the first plate 114 facing away from the second plate 124. The side of the first plate 114 facing away from the second plate 124 has a first protrusion 112 corresponding to the mounting groove 111. The side of the second plate 124 facing the first plate 114 has a clearance groove 121. The first protrusion 112 is adapted to be disposed within the clearance groove 121. The clearance groove 121 and the mounting groove 111 are arranged opposite to each other in the thickness direction of the cooling plate 1. The side of the second plate 124 facing away from the first plate 114 has a second protrusion 122 corresponding to the clearance groove 121.

[0045] Furthermore, such as Figure 1As shown, the reinforcing plate 2 includes a first connecting part 21, a second connecting part 22 and a third connecting part 23. The second connecting part 22 is connected to the side wall of the second protrusion 122. The two ends of the second connecting part 22 along the thickness direction of the cooling plate 1 are respectively connected to the first connecting part 21 and the third connecting part 23. The first connecting part 21 is stacked and connected to the first plate body 114. The third connecting part 23 is located on the side of the second protrusion 122 away from the first plate body 114 and is connected to the second protrusion 122.

[0046] Since the second protrusion 122 and the clearance groove 121 are correspondingly arranged, and the clearance groove 121 and the mounting groove 111 are correspondingly arranged, the second connecting part 22 is connected to the side wall of the second protrusion 122, and the third connecting part 23 is located on the side of the second protrusion 122 away from the first plate 114 and is connected to the second protrusion 122, the structural strength of the second protrusion 122 is increased, the collapse of the second protrusion 122 and the deformation of the clearance groove 121 and the mounting groove 111 are reduced, thereby further improving the protection of the battery module in the mounting groove 111.

[0047] Furthermore, such as Figure 1 As shown, the thickness of the reinforcing plate 2 is 1.95mm-2.05mm, such as 1.95mm, 1.96mm, 2mm, or 2.05mm. This makes the thickness of the reinforcing plate 2 appropriate, ensuring the structural strength of the reinforcing plate 2 on the one hand, and avoiding the reinforcing plate 2 being too thick on the other hand, which is beneficial to the economy and lightweight of the shell 10.

[0048] In some embodiments of this utility model, such as Figure 1 As shown, the reinforcing plate 2 extends along one of the length and width directions of the cooling plate 1, and there are two reinforcing plates 2, which are respectively located on both sides of the other direction of the length and width directions of the cooling plate 1.

[0049] For example, the reinforcing plate 2 extends along the length of the cooling plate 1, and there are two reinforcing plates 2 respectively located on both sides of the width of the cooling plate 1; or, the reinforcing plate 2 extends along the width of the cooling plate 1, and there are two reinforcing plates 2 respectively located on both sides of the length of the cooling plate 1.

[0050] Furthermore, such as Figure 1 As shown, two reinforcing plates 2 are respectively disposed on both sides of the second protrusion 122 along the length or width direction of the cooling plate 1, and both are connected to the side wall of the second protrusion 122. The provision of the two reinforcing plates 2 further improves the structural strength of the housing 10, thereby further improving the protection of the battery module.

[0051] In some embodiments of this utility model, the thickness of the first plate 114 is 1.15mm-1.25mm, such as 1.15mm, 1.18mm, 1.20mm or 1.25mm, etc. This makes the thickness of the first plate 114 suitable, which on the one hand ensures the structural strength of the first plate 114, and on the other hand avoids the first plate 114 from being too thick, which is beneficial to the economy and lightweight of the shell 10.

[0052] In some embodiments of this utility model, the thickness of the second plate 124 is 1.15mm-1.25mm, such as 1.15mm, 1.18mm, 1.20mm or 1.25mm, etc. This makes the thickness of the second plate 124 suitable, which on the one hand ensures the structural strength of the second plate 124, and on the other hand avoids the second plate 124 from being too thick, which is beneficial to the economy and lightweight of the shell 10.

[0053] In some embodiments of this utility model, such as Figure 1 As shown, the housing 10 also includes a crossbeam 3, which is disposed in the mounting groove 111 and connected to the inner wall of the mounting groove 111. It should be noted that the crossbeam 3 facilitates the support of structures such as the battery module. By fixing and supporting the battery module, the crossbeam 3 helps maintain the stability of the internal structure of the battery pack, preventing displacement of the battery pack due to vibration or impact during vehicle operation. Simultaneously, the crossbeam 3 effectively enhances the mechanical strength of the battery pack. When the vehicle encounters a collision, the crossbeam 3 can absorb and disperse collision energy, reducing the direct impact on the battery pack and thus lowering the risk of battery damage.

[0054] Furthermore, such as Figure 1 As shown, there are multiple crossbeams 3, which are spaced apart along one of the length and width directions of the cooling plate 1, and extend along the other direction of the length and width directions of the cooling plate 1. For example, in this utility model, there are three crossbeams 3, but this utility model is not limited to this, and there can be other types of crossbeams 3, such as 2, 4, 5 or 6, etc.

[0055] The following describes a battery pack according to an embodiment of the present invention.

[0056] The battery pack according to an embodiment of the present invention includes the housing 10 described above.

[0057] According to the battery pack of this utility model embodiment, by setting the aforementioned housing 10, the cooling plate 1 has a mounting groove 111 on one side in the thickness direction for mounting the battery module of the battery pack, so that the cooling plate 1 forms the main structure of the housing 10. This allows the cooling plate 1 to serve as the main structure of the housing 10 for mounting and fixing the battery module, and also for cooling the battery module. Thus, the cooling plate 1 has two uses, which simplifies the structure of the housing 10, simplifies the corresponding installation operation process, improves the efficiency of production and installation, and meets the cooling requirements of the battery module.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0059] 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 housing, characterized in that, For use in battery packs and including: A cooling plate has a mounting groove on one side in the thickness direction for mounting the battery module of the battery pack. The cooling plate includes an inner liner plate and a flow channel plate stacked and connected along the thickness direction of the cooling plate. The inner liner plate includes a first plate body, and the flow channel plate includes a second plate body. The mounting groove is located on the side of the first plate body opposite to the second plate body.

2. The housing according to claim 1, characterized in that, The first plate has a first protrusion on the side facing the second plate corresponding to the mounting groove, and the second plate has a clearance groove on the side facing the first plate. The first protrusion is adapted to be disposed in the clearance groove, and the clearance groove and the mounting groove are disposed opposite to each other in the thickness direction of the cooling plate.

3. The housing according to claim 2, characterized in that, The side of the second plate opposite to the first plate has a second protrusion corresponding to the position of the clearance groove.

4. The housing according to claim 1, characterized in that, The first plate has a third protrusion on the side opposite to the second plate, the third protrusion being located at the edge of the mounting groove, and the second plate has a fourth protrusion on the side facing the first plate, the third protrusion and the fourth protrusion being arranged opposite to each other.

5. The housing according to claim 1, characterized in that, Also includes: A reinforcing plate is connected to the side of the cooling plate opposite to the mounting groove and extends along the width or length direction of the cooling plate.

6. The housing according to claim 5, characterized in that, The reinforcing plate extends along one of the length and width directions of the cooling plate, and there are two reinforcing plates, which are respectively located on both sides of the other direction of the length and width directions of the cooling plate.

7. The housing according to claim 1, characterized in that, The thickness of the first plate is 1.15mm-1.25mm; And / or, the thickness of the second plate is 1.15mm-1.25mm.

8. The housing according to claim 1, characterized in that, Also includes: A crossbeam is disposed in the mounting groove and connected to the inner wall of the mounting groove.

9. A battery pack, characterized in that, Includes the housing according to any one of claims 1-8.

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