Battery pack structure and vehicle

Abstract

To provide a battery pack structure that maintains the stability and lifespan of the cell assemblies. [Solution] In a battery pack structure for a vehicle, a battery chamber 300 for installing a cell assembly is formed between a first housing 120 and a second housing 120, and the housing provides effective protection for the cell assembly. A first connection portion 111 and the second housing are connected to each other, so that the first housing and the second housing are assembled together, a first curved portion 112 is extended to the battery chamber, and a sealing member 200 is closer to the battery chamber, so that a package structure and sealing are formed at the first connection portion and the first curved portion. And, the sealing member is provided in the circumferential direction of the battery chamber to seal the periphery of the battery chamber, so that the sealing member seals the connection gap between the first housing and the second housing, and reduces the intrusion of external substances into the battery chamber in the circumferential direction. The battery pack structure can have good sealing performance.

Description

[Technical field]

[0001] The present invention relates to the field of vehicle production and manufacturing technology, and in particular to battery pack structures and vehicles. [Background technology]

[0002] A battery pack structure of a vehicle is used to store electric energy, and the electric energy is used to drive the vehicle. The stability and sealing performance of the battery pack structure are the main factors that determine the safety of the vehicle state and play an important role during driving. Therefore, how to make the battery pack structure have good stability and sealing performance is a technical problem that needs to be solved as soon as possible. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present application is to provide a battery pack structure and a vehicle. [Means for solving the problem]

[0004] The present application provides a battery pack structure including a housing and a sealing member, the housing includes a first housing and a second housing, a battery chamber is formed between the first housing and the second housing, the first housing includes a first connection portion and a first curved portion extending into the battery chamber, a distance between the first connection portion and the second housing is greater than a distance between the first curved portion and the second housing, the first connection portion is connected to the second housing, the first curved portion and the second housing are spaced apart to form a mounting groove, the sealing member is provided in the circumferential direction of the battery chamber, the sealing member is provided in the mounting groove, and both sides of the sealing member abut against the first curved portion and the second housing, respectively.

[0005] In an exemplary embodiment of the present application, the battery pack structure further includes a first reinforcing member provided on a side of the first housing away from the second housing.

[0006] In one exemplary embodiment of the present application, the first reinforcing member includes a second connection portion and a second curved portion, a distance between the second connection portion and the second housing is greater than a distance between the second curved portion and the second housing, the second connection portion abuts the first connection portion on a side of the first housing away from the second housing, and the second curved portion abuts the second curved portion on a side of the first housing away from the second housing.

[0007] In one exemplary embodiment of the present application, the first reinforcing member extends to the battery chamber, and a side of the first housing closer to the battery chamber and a side of the first reinforcing member closer to the battery chamber are connected by welding.

[0008] In one exemplary embodiment of the present application, the first connection portion is provided with a first through hole, the second housing is provided with a second through hole corresponding to the first through hole, and the battery pack structure further includes a first locking member passing through the first through hole and the second through hole so that the first connection portion is connected to the second housing.

[0009] In one exemplary embodiment of the present application, a third through hole is provided in the second connection portion of the first reinforcing member, and the first locking member penetrates the first through hole, the second through hole, and the third through hole so that the first connection portion, the second connection portion, and the second housing are connected to each other.

[0010] In one exemplary embodiment of the present application, the first reinforcing member further includes a first reinforcing rib protruding away from the first housing, and the structural strength of the first reinforcing member is reinforced by the first reinforcing rib.

[0011] In one exemplary embodiment of the present application, the battery pack structure further includes a second reinforcing member spaced apart from the circumferential side of the first reinforcing member, the second reinforcing member including a main body portion connected to a side of the first reinforcing member away from the second housing, and a second reinforcing rib arranged on the main body portion so as to protrude toward the side away from the first reinforcing member, and the battery pack structure further includes a second locking member penetrating the first reinforcing rib, the second reinforcing rib, and the second housing.

[0012] In one exemplary embodiment of the present application, the first reinforcing rib and the second reinforcing rib are spaced apart, a first recess is formed in the first reinforcing rib, a second recess is formed in the second reinforcing rib, and the first recess is located within the second recess.

[0013] The present application provides a vehicle including the battery pack structure. Effect of the Invention

[0014] The battery pack structure and vehicle of the solution of the present application have the following beneficial effects: A battery chamber for installing a cell assembly is formed between the first housing and the second housing, and the housing provides effective protection for the cell assembly. The first connection part is connected to the second housing, and the first curved part and the second housing are spaced apart to form a mounting groove, such that the distance between the first connection part and the second housing is greater than the distance between the first curved part and the second housing, and the sealing member is provided in the circumferential direction of the battery chamber and located in the mounting groove, and both sides of the sealing member abut against the first curved part and the second housing, respectively. The first connection part and the second housing are connected to each other, so that the first housing and the second housing are assembled together, the first curved part is extended to the battery chamber, and the sealing member is closer to the battery chamber, and the sealing member is provided in the circumferential direction of the battery chamber to seal the periphery of the battery chamber, and the sealing member seals the connection gap between the first housing and the second housing, thereby reducing the intrusion of external substances into the battery chamber in the circumferential direction. Thereby, a package structure and a sealing are formed at the first connection part and the first curved part. Therefore, the above design can provide the battery pack structure with good sealing performance, and thus maintain the stability and lifespan of the cell assembly.

[0015] Other features and advantages of the present application will be apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. [Brief description of the drawings]

[0017] The drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments conforming to the present application, and are used together with the specification to explain the principles of the present application. It is obvious that the drawings in the following description are only some embodiments of the present application, and a person skilled in the art can obtain other accompanying drawings based on these drawings without creative work. [Figure 1] 1 is a schematic diagram of a battery pack structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. [Diagram 3] FIG. 3 is an enlarged schematic view of a portion B in FIG. [Figure 4] 2 is a partial schematic diagram of a battery pack structure according to an embodiment of the present invention; [Diagram 5] FIG. 5 is an enlarged schematic view of a portion C in FIG. [Figure 6] 4 is a schematic diagram of a first housing, a first reinforcing member and a second reinforcing member according to the present invention; FIG. [Figure 7] FIG. 7 is an enlarged schematic view of a portion D in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, exemplary embodiments will be described in more detail with reference to the drawings. However, the exemplary embodiments can be implemented in various forms, and should not be construed as being limited to the examples described in this specification. Rather, the provision of these embodiments will make the present application more comprehensive and complete, and can comprehensively convey the idea of ​​the exemplary embodiments to those skilled in the art.

[0019] Furthermore, the described features, structures, or characteristics may be incorporated in one or more embodiments in any suitable manner. In the following description, numerous specific details are provided to fully understand the embodiments of the present application. However, one skilled in the art will recognize that the technical solutions of the present application may be implemented without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0020] The present application will be described in more detail below with reference to the drawings and specific examples. Note that the technical features of the embodiments of the present application can be combined with each other as long as they are not mutually contradictory. The embodiments described below with reference to the drawings are illustrative and are intended to be used to explain the present application, and cannot be understood as limiting the present application.

[0021] In addition, "plurality" as referred to in this specification means two or more than two. "And / or" describes a relation between related objects and indicates that there are three possible relations. For example, A and / or B can indicate three cases: when only A is present, when both A and B are present, and when only B is present. The symbol " / " generally indicates that the related objects before and after are in an "or" relation.

[0022] A battery pack structure of a vehicle is used to store electric energy, and the electric energy is used to drive the vehicle. The stability and sealing performance of the battery pack structure are the main factors that determine the safety of the vehicle state and play an important role during driving. Therefore, how to make the battery pack structure have good stability and sealing performance is a technical problem that needs to be solved as soon as possible.

[0023] In order to solve the above technical problems, referring to Figs. 1 to 3, the present application provides a battery pack structure including a housing 100 and a sealing member 200, the housing 100 includes a first housing 110 and a second housing 120, a battery chamber 300 is formed between the first housing 110 and the second housing 120, the first housing 110 includes a first connection portion 111 and a first curved portion 112 extending into the battery chamber 300, and the first connection portion 111 and the second curved portion 112 are disposed between the first housing 110 and the second housing 120. The distance between the housing 120 is greater than the distance between the first curved portion 112 and the second housing 120, the first connection portion 111 is connected to the second housing 120, and the first curved portion 112 and the second housing 120 are spaced apart to form an attachment groove. The sealing member 200 is provided in the circumferential direction of the battery chamber 300, and the sealing member 200 is provided in the attachment groove 130, and both sides of the sealing member 200 abut against the first curved portion 112 and the second housing 120, respectively.

[0024] The battery chamber 300 formed between the first housing 110 and the second housing 120 is used for installing the cell assembly 10, and the housing 100 provides effective protection for the cell assembly 10. The first connection portion 111 is connected to the second housing 120, and the first curved portion 112 and the second housing 120 are spaced apart from each other to form a mounting groove 130, such that the distance between the first connection portion 111 and the second housing 120 is greater than the distance between the first curved portion 112 and the second housing 120, and the sealing member 200 is provided in the circumferential direction of the battery chamber 300 and located in the mounting groove 130, and both sides of the sealing member 200 abut against the first curved portion 112 and the second housing 120, respectively. The first connection portion 111 and the second housing 120 are connected to each other, so that the first housing 110 and the second housing 120 are assembled together, the first curved portion 112 is extended to the battery chamber 300, the sealing member 200 is closer to the battery chamber 300, and the sealing member 200 is provided in the circumferential direction of the battery chamber 300 to seal the periphery of the battery chamber 300, so that the sealing member 200 seals the connection gap between the first housing 110 and the second housing 120 and reduces the intrusion of external substances into the battery chamber 300 in the circumferential direction. As a result, the first connection portion 111 and the first curved portion 112 form a package structure and a sealing structure. Therefore, the above design can provide the battery pack structure with good sealing performance, and thus the stability and life of the cell assembly 10 can be maintained.

[0025] In some embodiments, either the first housing 110 or the second housing 120 can be connected to a vehicle chassis, and either the first housing 110 or the second housing 120 can be integrated into the vehicle chassis to integrate the battery pack with the chassis (also referred to as CTP / CTC / CTB), which can increase the strength of the vehicle chassis and reduce the weight of the battery pack.

[0026] In some embodiments, the material of the first housing 110 and the second housing 120 may be a metal material, including but not limited to iron, copper, aluminum, or alloys thereof, etc. The first housing 110 and the second housing 120 are formed by pressing, and grooves are formed in each of the first housing 110 and the second housing 120 by pressing, and the grooves of the first housing 110 and the second housing 120 form the battery chamber 300.

[0027] In some embodiments, the battery compartment 300 is used to install the cell assembly 10, which includes, but is not limited to, cells, connecting wires, connecting members, etc., and the cells may be arranged in multiples, with connecting wires and connecting members connecting the cells to each other to form the cell assembly 10.

[0028] In some embodiments, the material of the sealing member 200 includes, but is not limited to, rubber, plastic, fabric, metal, etc., and may be specifically selected according to actual circumstances.

[0029] 2 and 3, in some embodiments, the battery pack structure further includes a first reinforcing member 400 provided on a side of the first housing 110 away from the second housing 120. The first reinforcing member 400 is made of a metal material and can form a laminated structure with the first housing 110, thereby enhancing the structural strength of the first housing 110. Furthermore, the first reinforcing member 400 includes a second connection portion 410 and a second curved portion 420, and the distance between the second connection portion 410 and the second housing 120 is greater than the distance between the second curved portion 420 and the second housing 120, and the second connection portion 410 abuts against the first connection portion 111 on the side of the first housing 110 away from the second housing 120, and the second curved portion 420 abuts against the second curved portion 420 on the side of the first housing 110 away from the second housing 120. By configuring the distance between the second connecting portion 410 and the second housing 120 to be greater than the distance between the second curved portion 420 and the second housing 120, the first reinforcing member 400 and the first housing 110 are formed into corresponding shapes, the second connecting portion 410 and the first connecting portion 111 can form a layered structure, and the second curved portion 420 and the first curved portion 112 can form a layered structure. This achieves reinforcement of the first connecting portion 111 and the first curved portion 112.

[0030] In some embodiments, the first connecting portion 111 and the second connecting portion 410 are connected by welding, and the first curved portion 112 and the second curved portion 420 are connected by welding. A transition portion is formed between the first connecting portion 111 and the first curved portion 112, and a transition portion is formed between the second connecting portion 410 and the second curved portion 420, with a gap between the two transition portions to facilitate adjustment of the tolerance between the two.

[0031] 2 and 3, in some embodiments, the first reinforcing member 400 extends to the battery chamber 300, and the side of the first housing 110 close to the battery chamber 300 and the side of the first reinforcing member 400 close to the battery chamber 300 are connected by welding. The first housing 110 and the first reinforcing member 400 are connected by welding on the side close to the battery chamber 300, which can improve the connection strength between the first reinforcing member 400 and the first housing 110. Because the pressure of the cell assembly 10 is applied to the connection portion between the first housing 110 and the second housing 120, and the connection portion between the first housing 110 and the second housing 120 needs to be pressed and formed, the stress at the connection portion is also larger, so that the connection portion between the first housing 110 and the second housing 120 is more easily broken or fractured. Therefore, by extending the battery chamber 300 to the bottom of the battery chamber 300, the length of the first reinforcing member 400 can be increased, thereby appropriately increasing the strength of the first housing 110. Furthermore, since the first reinforcing member 400 is used for localized reinforcement, the amount of material used can be reduced, and costs can be reduced.

[0032] 2 and 3, in some embodiments, the first connection portion 111 is provided with a first through hole 1111, and the second housing 120 is provided with a second through hole 121 corresponding to the first through hole 1111. The battery pack structure further includes a first locking member 510, and the first locking member 510 passes through the first through hole 1111 and the second through hole 121 so that the first connection portion 111 is connected to the second housing 120. The second connection portion 410 of the first reinforcing member 400 is provided with a third through hole 411, and the first locking member 510 passes through the first through hole 1111, the second through hole 121, and the third through hole 411 so that the first connection portion 111, the second connection portion 410, and the second housing 120 are connected to each other. The first locking member 510 includes, but is not limited to, a bolt, a rivet, a lock pin, and the like. For example, the first locking member 510 is a bolt, and the first connecting portion 111 and the second connecting portion 410 are connected by the bolt, thereby allowing easy attachment and detachment. After the cell assembly 10 is inserted into the battery chamber 300, the first housing 110, the second housing 120, and the first reinforcing member 400 are assembled by the bolt, and the height of the mounting groove 130 can be adjusted by adjusting the tightening of the bolt, thereby adjusting the density of the sealing member 200. Furthermore, compared to connection by rivets, the input of riveting equipment can be reduced, resulting in reduced costs.

[0033] 4 to 7, in some embodiments, the first reinforcing member 400 further includes a first reinforcing rib 430 provided so as to protrude toward the side away from the first housing 110, and the structural strength of the first reinforcing member 400 is reinforced by the first reinforcing rib 430. The first reinforcing rib 430 performs a reinforcing function, and by reducing the weight of the first reinforcing member 400, the weight of the vehicle can be reduced.

[0034] 4 to 7, in some embodiments, the battery pack structure further includes a second reinforcing member 600 provided around the periphery of the first reinforcing member 400 with a gap therebetween, and the second reinforcing member 600 includes a body portion 620 connected to a side of the first reinforcing member 400 away from the second housing 120, and a second reinforcing rib 610 provided on the body portion 620 so as to protrude towards the side away from the first reinforcing member 400. The battery pack structure further includes a second locking member 520 penetrating the first reinforcing rib 430, the second reinforcing rib 610, and the second housing 120. The second reinforcing member 600 can further reinforce the first reinforcing member 400, and the second locking member 520 penetrates the first reinforcing rib 430, the second reinforcing rib 610, and the second housing 120, connecting the three. The second reinforcing member 600 can increase the strength of the connection points, thereby working together with the first locking member 510 to further increase the connection strength between the first housing 110, the second housing 120, the first reinforcing member 400, and the second reinforcing member 600.

[0035] 4 to 7, in some embodiments, the first reinforcing rib 430 and the second reinforcing rib 610 are provided with a gap therebetween, the first reinforcing rib 430 is formed with a first recessed portion 431, and the second reinforcing rib 610 is formed with a second recessed portion 611, with the first recessed portion 431 located within the second recessed portion 611. The first recessed portion 431 and the second recessed portion 611 are formed by pressing, and the first recessed portion 431 is located within the second recessed portion 611 and provided with a gap therebetween, so that a buffer is formed between the first reinforcing member 400, the second reinforcing member 600, and the second housing 120, and the stress on the second locking member 520 can be reduced.

[0036] In the present application, the battery pack structure includes a first housing 110, a second housing 120, a first reinforcing member 400 and a second reinforcing member 600, and a battery chamber 300 for installing the cell assembly 10 is formed between the first housing 110 and the second housing 120, and the housing 100 provides effective protection for the cell assembly 10. The first connecting portion 111 of the first housing 110 and the second housing 120 are connected to each other, so that the first housing 110 and the second housing 120 are assembled together, the first curved portion 112 is extended to the battery chamber 300, and the sealing member 200 is closer to the battery chamber 300, so that the first connecting portion 111 and the first curved portion 112 form a double package structure. The sealing member 200 is provided in the circumferential direction of the battery chamber 300 to seal the periphery of the battery chamber 300, so that the sealing member 200 seals the connection gap between the first housing 110 and the second housing 120, and reduces the intrusion of external substances into the battery chamber 300 in the circumferential direction. The first reinforcing member 400 reinforces the connection between the first housing 110 and the second housing 120, and the second locking member 520 is provided between the first reinforcing member 400 and the second housing 120 to further increase the connection strength. Thus, the above design provides the battery pack structure with good sealing performance and connection strength, and thus the stability and lifespan of the cell assembly 10 can be maintained.

[0037] The present application provides a vehicle including the above battery pack structure.

[0038] In this application, unless otherwise clearly specified or limited, the terms "installed" and "connected" should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integral, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected through an intermediate medium, may be internal communication between two parts, or may be an interactive relationship between two parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation.

[0039] In the description of this specification, the description of terms such as "some embodiments" is intended to include specific features, structures, materials, or characteristics described with reference to the embodiment in at least one embodiment of the present application. In this specification, schematic expressions of the above terms do not necessarily refer to the same embodiment or example. And, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, if not mutually inconsistent, a person skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples.

[0040] Although the embodiments of the present application have been shown and described above, the above embodiments are illustrative and should not be understood as limiting the present application. Those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application. Therefore, it should be noted that any changes or modifications made in accordance with the claims and specification of the present application should fall within the scope covered by the patent of the present application. [Explanation of symbols]

[0041] Cell assembly 10, housing 100, first housing 110, first connection portion 111, first through hole 1111, first curved portion 112, second housing 120, second through hole 121, mounting groove 130, sealing member 200, battery chamber 300, first reinforcing member 400, second connection portion 410, third through hole 411, second curved portion 420, first reinforcing rib 430, first recessed portion 431, first locking member 510, second locking member 520, second reinforcing member 600, second reinforcing rib 610, second recessed portion 611, main body portion 620.

Claims

1. a housing including a first housing and a second housing, a battery chamber being formed between the first housing and the second housing, the first housing including a first connection portion and a first curved portion extending into the battery chamber, a distance between the first connection portion and the second housing being greater than a distance between the first curved portion and the second housing, the first connection portion being connected to the second housing, and the first curved portion and the second housing being spaced apart to form an attachment groove; a sealing member provided in the mounting groove in a circumferential direction of the battery chamber, the sealing member being abutted against the first curved portion and the second housing at both sides, A battery pack structure comprising:

2. The housing further includes a first reinforcing member provided on a side of the first housing away from the second housing.

2. The battery pack structure according to claim 1 .

3. the first reinforcing member includes a second connection portion and a second curved portion, a distance between the second connection portion and the second housing is greater than a distance between the second curved portion and the second housing, the second connection portion abuts against the first connection portion on a side of the first housing that is away from the second housing, and the second curved portion abuts against the second curved portion on a side of the first housing that is away from the second housing.

3. The battery pack structure according to claim 2.

4. the first reinforcing member extends to the battery chamber, and a side of the first housing close to the battery chamber and a side of the first reinforcing member close to the battery chamber are connected by welding.

4. The battery pack structure according to claim 3.

5. a first through hole is provided in the first connection portion, and a second through hole corresponding to the first through hole is provided in the second housing; a first locking member extending through the first through hole and the second through hole so that the first connection portion is connected to the second housing; 5. The battery pack structure according to claim 4.

6. a third through hole is provided in the second connection portion of the first reinforcing member, and the first locking member passes through the first through hole, the second through hole, and the third through hole so that the first connection portion, the second connection portion, and the second housing are connected to each other; 6. The battery pack structure according to claim 5.

7. The first reinforcing member further includes a first reinforcing rib provided so as to protrude toward a side away from the first housing, and a structural strength of the first reinforcing member is reinforced by the first reinforcing rib.

3. The battery pack structure according to claim 2.

8. a second reinforcing member provided around the periphery of the first reinforcing member with a gap therebetween, the second reinforcing member including a main body portion connected to a side of the first reinforcing member that faces away from the second housing, and a second reinforcing rib provided on the main body portion so as to protrude towards a side that faces away from the first reinforcing member, a second locking member penetrating the first reinforcing rib, the second reinforcing rib, and the second housing; The battery pack structure according to claim 7 .

9. The first reinforcing rib and the second reinforcing rib are provided at an interval, a first recess is formed in the first reinforcing rib, a second recess is formed in the second reinforcing rib, and the first recess is located within the second recess.

9. The battery pack structure according to claim 8.

10. A vehicle comprising the battery pack structure according to any one of claims 1 to 9.

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