Battery pack structure and vehicle

Abstract

Battery pack structure, characterized in that it comprises: a housing comprising a first housing and a second housing, wherein a battery compartment is formed between the first housing and the second housing, wherein the first housing comprises a first connecting section and a first bending section extending towards the battery compartment, wherein the distance between the first connecting section and the second housing is greater than the distance between the first bending section and the second housing, wherein the first connecting section is connected to the second housing, and wherein the first bending section is spaced away from the second housing to form a mounting groove; a sealing element provided in the circumferential direction of the battery compartment, wherein the sealing element is provided in the mounting groove, with both sides of the sealing element bearing against the first bending section and the second housing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vehicle production and manufacturing and, in particular, to a battery pack structure and a vehicle. STATE OF THE ART

[0002] A vehicle's battery pack structure stores electrical energy used to power the vehicle. The stability and sealing of the battery pack structure can be among the key factors determining vehicle safety and play a crucial role during vehicle operation. Therefore, ensuring good stability and sealing of the battery pack structure represents a technical problem that urgently needs to be solved. SUMMARY OF THE UTILITY MODEL

[0003] The object of this application is to provide a battery pack structure and a vehicle.

[0004] The present application provides a battery pack structure comprising a housing and a sealing member, the housing comprising a first housing and a second housing, a battery compartment being formed between the first housing and the second housing, the first housing comprising a first connecting portion and a first bending portion extending toward the battery compartment, the distance between the first connecting portion and the second housing being greater than the distance between the first bending portion and the second housing, the first connecting portion being connected to the second housing, the first bending portion being spaced from the second housing to form a mounting groove;wherein the sealing member is provided in the circumferential direction of the battery compartment, wherein the sealing member is provided in the mounting groove, wherein both sides of the sealing member abut against the first bending portion and the second housing, respectively;

[0005] In one embodiment of the present application, the battery pack structure further comprises a first reinforcing element, wherein the first reinforcing element is provided on a side of the first housing facing away from the second housing.

[0006] In one embodiment of the present application, the first reinforcing element comprises a second connecting portion and a second bending portion, wherein the distance between the second connecting portion and the second housing is greater than the distance between the second bending portion and the second housing, wherein the second connecting portion abuts the first connecting portion on a side of the first housing facing away from the second housing, and wherein the second bending portion abuts the second bending portion on a side of the first housing facing away from the second housing.

[0007] In one embodiment of the present application, the first reinforcing element extends to the battery compartment, wherein a side of the first housing located near the battery compartment is connected to a side of the first reinforcing element located near the battery compartment by welding.

[0008] In one embodiment of the present application, the first connecting portion is provided with a first through-hole, and the second housing is provided with a second through-hole corresponding to the first through-hole. The battery pack structure further includes a first locking member extending through the first through-hole and the second through-hole to connect the first connecting portion to the second housing.

[0009] In one embodiment of the present application, the second connecting portion of the first reinforcing member is provided with a third through-hole, wherein the first locking member passes through the first through-hole, the second through-hole, and the third through-hole to connect the first connecting portion, the second connecting portion, and the second housing to each other.

[0010] In one embodiment of the present application, the first reinforcing element further comprises a first reinforcing rib which protrudes to the side facing away from the first housing, wherein the first reinforcing rib increases the structural strength of the first reinforcing element.

[0011] In one embodiment of the present application, the battery pack structure further comprises a second reinforcing element, wherein the second reinforcing element is arranged circumferentially around the first reinforcing element at a distance from the first reinforcing element, wherein the second reinforcing element comprises a main body and a second reinforcing rib, wherein the main body is connected to a side of the first reinforcing element facing away from the second housing, and wherein the second reinforcing rib is provided protruding from the main body toward the side facing away from the first reinforcing element. The battery pack structure further comprises a second locking element that extends through the first reinforcing rib, the second reinforcing rib, and the second housing.

[0012] In one embodiment of the present application, the first reinforcing rib is arranged at a distance from the second reinforcing rib, wherein the first reinforcing rib forms a first recess and the second reinforcing rib forms a second recess, wherein the first recess is located within the second recess.

[0013] This application also provides a vehicle incorporating this battery pack structure.

[0014] The battery pack structure and vehicle provided in this application include the following advantageous effects: A battery compartment for arranging the cell components is formed between the first casing and the second casing, the cell components being effectively protected by the casing. The first connecting portion is connected to the second casing, and the distance between the first connecting portion and the second casing is greater than the distance between the first bending portion and the second casing, so that the first bending portion is spaced apart from the second casing to form a mounting groove. The sealing member is provided in the circumferential direction of the battery compartment and is provided in the mounting groove, with both sides of the sealing member abutting against the first bending portion and the second casing, respectively.The first case and the second case are assembled by connecting the first connecting portion and the second case to each other, wherein the first bending portion extends toward the battery compartment and the sealing member is located closer to the battery compartment. Moreover, the sealing member is provided in the circumferential direction of the battery compartment to seal the periphery of the battery compartment, so that the connecting gap between the first case and the second case is sealed by the sealing member, thereby reducing the intrusion of foreign matter into the battery compartment in the circumferential direction. As a result, an encapsulation structure and sealing are formed at the first connecting portion and the first bending portion. Therefore, the battery pack structure can have good sealing performance with the above configuration, thereby maintaining the stability and durability of the cell components.

[0015] Further features and advantages of the utility model will become apparent from the following detailed description or may be partially learned by implementing the present utility model 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 limiting of the application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] These drawings are incorporated into and form a part of the description. They illustrate embodiments consistent with the present disclosure and, together with the description, are configured to explain the principles of the present disclosure. Obviously, the drawings in the following description illustrate only some embodiments of the present disclosure. Those skilled in the art may obtain other drawings based on these drawings without inventive work. It shows: Fig. 1 is a schematic structural diagram of a battery pack structure in an embodiment of the utility model; Fig. 2 a schematic cross-sectional view along the line AA in Fig. 1; Fig. 3 an enlarged schematic representation of area B in Fig. 2; Fig. 4 is a schematic partial view of a battery pack structure in an embodiment of the utility model; Fig. 5 an enlarged schematic representation of area C in Fig. 4; Fig. 6 is a schematic diagram showing the connection of the first housing, the first reinforcement member, and the second reinforcement member in the present utility model; Fig. 7 an enlarged schematic representation of area D in Fig. 6. Reference symbol: 10 cell component; 100 housings; 110 first housing; 111 first connecting section; 1111 first through hole; 112 first beige section; 120 second housing; 121 second through hole; 130 mounting groove; 200 sealing element; 300 battery compartment; 400 first reinforcement element 410 second connecting section; 411 third through hole; 420 second bending section; 430 first reinforcing rib; 431 first recess; 510 first locking element; 520 second locking element; 600 second reinforcing element; 610 second reinforcing rib; 611 second recess; 620 main body. DESCRIPTION OF THE EMBODIMENTS

[0018] The embodiments will now be described in more detail with reference to the accompanying drawings. However, the embodiments may be embodied in various forms and should not be construed as limited to the examples set forth herein. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concepts of the embodiments to those skilled in the art.

[0019] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following descriptions, more specific details are provided to enable a thorough understanding of the embodiments of this disclosure. However, one of ordinary skill in the art should understand that the technical solutions in this disclosure may be implemented without one or more of the specific details, or that other methods, units, devices, or other steps may be used. In other instances, known methods, devices, implementations, or acts are not shown or described in detail to avoid obscuring aspects of this disclosure.

[0020] The present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features of the various embodiments of the present application described below can be combined with one another, provided they do not conflict with one another. The embodiments described below with reference to the drawings are exemplary and are intended to illustrate the present application, but should not be construed as limiting the present application.

[0021] It should be noted that the "more" mentioned in this context refers to two or more. The term "and / or" only describes one related relationship to the objects associated with the description and represents that three relationships can exist. For example, A and / or B can represent the following three cases: only A exists, both A and B exist, and only B exists. Furthermore, the symbol " / " in this description usually indicates an "or" relationship between the related objects.

[0022] A vehicle's battery pack structure stores electrical energy used to power the vehicle. The stability and sealing of the battery pack structure can be among the key factors determining vehicle safety and play a crucial role during vehicle operation. Therefore, ensuring good stability and sealing of the battery pack structure represents a technical problem that urgently needs to be solved.

[0023] In order to solve the above-mentioned technical problems, the present application provides, with reference to the Fig. 1 to Fig. 3 provides a battery pack structure comprising a housing 100 and a sealing member 200.The housing 100 comprises a first housing 110 and a second housing 120, wherein a battery compartment 300 is formed between the first housing 110 and the second housing 120, wherein the first housing 110 comprises a first connecting portion 111 and a first bending portion 112 extending towards the battery compartment 300, wherein the distance between the first connecting portion 111 and the second housing 120 is greater than the distance between the first bending portion 112 and the second housing 120, wherein the first connecting portion 111 is connected to the second housing 120 and the first bending portion 112 is spaced from the second housing 120 to form a mounting groove 130, wherein the sealing element 200 is provided in the circumferential direction of the battery compartment 300, wherein the sealing element 200 is provided in the mounting groove 130, wherein both sides of the sealing element 200 respectively on the first bending section 112 and on the second housing 120.

[0024] The battery compartment 300 formed between the first housing 110 and the second housing 120 serves to accommodate the cell components, which are effectively protected by the housing 100. The first connecting portion 111 is connected to the second housing 120, wherein the distance between the first connecting portion 111 and the second housing 120 is greater than the distance between the first bent portion 112 and the second housing 120, so that the first bent portion 112 is spaced apart from the second housing 120 to form a mounting groove 130. The sealing element 200 is provided in the circumferential direction of the battery compartment 300 and arranged in the mounting groove 130. Both sides of the sealing element 200 abut the first bent portion 112 and the second housing 120. The first connecting portion 111 is connected to the second housing 120.The first housing 110 and the second housing 120 are assembled by connecting the first connecting portion 111 and the second housing 120 to each other, with the first bending portion 112 extending toward the battery compartment 300 and the sealing member 200 closer to the battery compartment 300. Furthermore, the sealing member 200 is provided in the circumferential direction of the battery compartment 300 to seal the periphery of the battery compartment 300, so that the sealing member 200 seals the connection gap between the first housing 110 and the second housing 120, thereby reducing the intrusion of foreign matter into the battery compartment 300 in the circumferential direction. Thus, an encapsulation structure and sealing are formed at the first connecting portion 111 and the first bending portion 112.Therefore, the battery pack structure can have good sealing performance by the above configuration, thereby maintaining the stability and service life of the cell components 10.

[0025] In some embodiments, either the first housing 110 or the second housing 120 may be connected to the chassis of the vehicle, wherein either the first housing 110 or the second housing 120 is integrated into the chassis of the vehicle such that the battery pack and the chassis are integrally formed (also referred to as CTP / CTC / CTB), which may increase the strength of the chassis of the vehicle and also reduce the weight of the battery pack.

[0026] In some embodiments, the first housing 110 and the second housing 120 may be made of metal, including, but not limited to, iron, copper, aluminum, or their alloys, etc. The first housing 110 and the second housing 120 are formed by stamping, with grooves being stamped and formed into the first housing 110 and the second housing 120, respectively, and the battery compartment 300 formed by the groove of the first housing 110 and the groove of the second housing 120.

[0027] In some embodiments, the battery compartment 300 is used to house the battery cell assembly 10. The battery cell assembly 10 includes, among other things, battery cells, connecting leads, terminals, etc. A plurality of battery cells may be provided, with the battery cells connected by the connecting leads and terminals to form a battery cell assembly 10.

[0028] In some embodiments, the material of the sealing element 200 includes, among others, rubber, plastic, textile, metal, etc. and is selected according to the actual situation.

[0029] In some embodiments, as in Fig. 2 and Fig. As shown in Figure 3, the battery pack structure further includes a first reinforcement member 400, wherein the first reinforcement member 400 is provided on a side of the first housing 110 facing away from the second housing 120. The first reinforcement member 400 is made of metal and can form a laminated structure with the first housing 110, thereby increasing the structural strength of the first housing 110.In addition, the first reinforcing element 400 comprises a second connecting section 410 and a second bending section 420, wherein the distance between the second connecting section 410 and the second housing 120 is greater than the distance between the second bending section 420 and the second housing 120, wherein the second connecting section 410 abuts the first connecting section 111 on a side of the first housing 110 facing away from the second housing 120, and wherein the second bending section 420 abuts the second bending section 420 on a side of the first housing 110 facing away from the second housing 120.The distance between the second bending portion 420 and the second housing 120 is larger than the distance between the second bending portion 420 and the second housing 120. The first reinforcement member 400 and the first housing 110 are formed in corresponding shapes, so that a laminated structure is formed by the second connecting portion 410 and the first connecting portion 111. This reinforces the first connecting portion 111 and the first bending portion 112.

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

[0031] In some embodiments, as in Fig. 2 and Fig. As shown in Figure 3, the first reinforcement member 400 extends to the battery compartment 300, with the side of the first housing 110 near the battery compartment 300 being connected to the side of the first reinforcement member 400 near the battery compartment 300 by welding. By welding the first housing 110 to the first reinforcement member 400 on the side near the battery compartment 300, the strength of the connection between the first reinforcement member 400 and the first housing 110 can be increased.Because the connection between the first case 110 and the second case 120 is affected by the pressure of the battery cell assembly 10, and punching is required at the connection point between the first case 110 and the second case 120, it leads to greater stress at the connection point, and thus the connection point between the first case 110 and the second case 120 is more likely to crack or break. Therefore, the battery compartment 300 is extended to the bottom of the battery compartment 300, which can increase the length of the first reinforcement member 400, thereby appropriately increasing the strength of the first case 110. Furthermore, since the first reinforcement member 400 is used for local reinforcement, the amount of material used is also saved and the cost is reduced.

[0032] In some embodiments, as in Fig. 2 and Fig. 3, the first connecting 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 that passes through the first through-hole 1111 and the second through-hole 121, so that the first connecting portion 111 is connected to the second housing 120. The second connecting portion 410 of the first reinforcing member 400 is provided with a third through-hole 411, the first locking member 510 passing through the first through-hole 1111, the second through-hole 121, and the third through-hole 411, so that the first connecting portion 111, the second connecting portion 410, and the second housing are connected to each other. The first locking element 510 includes, among others, bolts, rivets, locking pins, etc.For example, the first locking element 510 is a bolt that connects the first connecting portion 111 to the second connecting portion 410, allowing for easy disassembly and assembly. After the battery cell assembly 10 is inserted into the battery compartment 300, the first housing 110, the second housing 120, and the first reinforcement member 400 are assembled by the bolt. The height of the mounting groove 130 can also be adjusted by adjusting the strength of the bolt, thus adjusting the tightness of the sealing elements 200.

[0033] In addition, compared to riveting, the effort required for riveting equipment can be reduced and costs can be lowered.

[0034] In some embodiments, as in Fig. 4 to Fig. As shown in Figure 7, the first reinforcement member 400 further includes a first reinforcement rib 430 projecting toward the side facing away from the first housing 110. The first reinforcement rib 430 increases the structural strength of the first reinforcement member 400. The first reinforcement rib 430 simultaneously provides reinforcement and reduces the weight of the first reinforcement 400, thereby reducing the weight of the vehicle.

[0035] In some embodiments, as in Fig. 4 to Fig. 7, the battery pack structure further comprises a second reinforcing element 600, wherein the second reinforcing element 600 is arranged circumferentially around the first reinforcing element at a distance from the first reinforcing element 400, wherein the second reinforcing element 600 comprises a main body 620 and a second reinforcing rib 610, wherein the main body 620 is connected to the side of the first reinforcing element 400 facing away from the second housing 120, and wherein the second reinforcing rib 610 is provided protruding from the main body toward the side facing away from the first reinforcing element 400. The battery pack structure further comprises a second locking element 520 that extends through the first reinforcing rib 430, the second reinforcing rib 610, and the second housing 120. The first reinforcing element 400 can be further reinforced by the second reinforcing element 600.The first reinforcing rib 430, the second reinforcing rib 610, and the second housing 120 are connected to each other by the second locking element 520 extending therethrough. The strength of the joint can be enhanced by the second reinforcing element 600, which cooperates with the first locking element 510 to increase the joint strengths of the first housing 110, the second housing 120, the first reinforcing element 400, and the second reinforcing element 600.

[0036] In some embodiments, as in Fig. 4 to Fig.As shown in Figure 7, the first reinforcing rib 430 is spaced apart from the second reinforcing rib 610, the first reinforcing rib 430 forming a first recess 431 and the second reinforcing rib 610 forming a second recess 611, the first recess 431 being located within the second recess 611. The first recess 431 and the second recess 611 are formed by stamping, the first recess 431 being located within and spaced apart from the second recess 611, so that buffer zones are formed between the first reinforcing member 400, the second reinforcing member 600, and the second housing 120, which can reduce the stress of the second locking member 520.

[0037] In this application, the battery pack structure includes a first housing 110, a second housing 120, a first reinforcement member 400, and a second reinforcement member 600. A battery compartment 300 for arranging the cell components 10 is formed between the first housing 110 and the second housing 120, the cell components 10 being effectively protected by the housing 100. The first housing 110 and the second housing 120 are assembled by connecting the first connecting portion 111 of the first housing 110 and the second housing 120 to each other, the first bending portion 112 extending toward the battery compartment 300, and the sealing member 200 being closer to the battery compartment 300, so that a double encapsulation structure is formed at the first connecting portion 111 and the first bending portion 112.Furthermore, the sealing member 200 is provided in the circumferential direction of the battery compartment 300 to seal the periphery of the battery compartment 300, so that the sealing member 200 seals the connection gap between the first housing 110 and the second housing 120, thereby reducing the intrusion of foreign matter into the circumferential direction of the battery compartment 300. The connection point between the first housing 110 and the second housing 120 is reinforced by the provision of the first reinforcing member 400, and the connection strength is further increased by disposing the second locking member 520 between the first reinforcing member 400 and the second housing 120. Therefore, with the above configuration, the battery pack structure can have good sealing performance, thereby maintaining the stability and durability of the cell components 10.

[0038] This application also provides a vehicle including the above-mentioned battery pack structure.

[0039] In this application, the terms "arrange (provide)" and "connect," etc., are to be understood in the broadest sense unless otherwise specified or limited. For example, they may represent a fixed connection, a detachable connection, or an integral connection. They may also represent mechanical or electrical connections, or they may communicate with each other, or they may represent direct connections, or they may be indirect connections established through the use of an intermediate medium, or they may represent an internal communication between two elements, or an interaction between two elements. A person skilled in the art can understand the specific meanings of the terms in the utility model depending on a particular situation.

[0040] In the presentation of the present description, the description with reference to the term "one embodiment" or the like means that the specific features, structures, materials, or properties described in connection with the embodiment are included in at least one embodiment of the present disclosure. In the description, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the described specific features, structures, materials, or properties may be appropriately combined in one or more embodiments or examples. Furthermore, various embodiments or examples described in the description, as well as features of different embodiments or examples, may be combined by those skilled in the art, unless they conflict with each other.

[0041] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above-described embodiments are exemplary and should not be construed as limiting the present disclosure. Within the scope of the present disclosure, variations, modifications, substitutions, and changes to the above-described embodiments may be made by those skilled in the art. Therefore, any changes or modifications made in accordance with the claims and specification of the present application should be considered within the scope of the patent application.

Claims

[1] Battery pack structure, characterized by that it includes: a housing comprising a first housing and a second housing, wherein a battery compartment is formed between the first housing and the second housing, wherein the first housing comprises a first connecting portion and a first bending portion extending towards the battery compartment, wherein the distance between the first connecting portion and the second housing is greater than the distance between the first bending portion and the second housing, wherein the first connecting portion is connected to the second housing, wherein the first bending portion is spaced from the second housing to form a mounting groove; a sealing member provided in the circumferential direction of the battery compartment, the sealing member being provided in the mounting groove, both sides of the sealing member abutting against the first bending portion and the second housing, respectively. [2] Battery pack structure according to claim 1, characterized by that the battery pack structure further comprises a first reinforcing element, wherein the first reinforcing element is provided on a side of the first housing facing away from the second housing. [3] Battery pack structure according to claim 2, characterized by in that the first reinforcing element comprises a second connecting section and a second bending section, wherein the distance between the second connecting section and the second housing is greater than the distance between the second bending section and the second housing, wherein the second connecting section bears against the first connecting section on a side of the first housing facing away from the second housing, and wherein the second bending section bears against the second bending section on a side of the first housing facing away from the second housing. [4] Battery pack structure according to claim 3, characterized bythat the first reinforcing element extends to the battery compartment, wherein a side of the first housing near the battery compartment is connected to a side of the first reinforcing element near the battery compartment by welding. [5] Battery pack structure according to claim 4, characterized by , that the first connecting portion is provided with a first through-hole, and the second housing is provided with a second through-hole corresponding to the first through-hole; wherein the battery pack structure further comprises a first locking member passing through the first through-hole and the second through-hole to connect the first connecting portion to the second housing. [6] Battery pack structure according to claim 5, characterized bythat the second connecting portion of the first reinforcing member is provided with a third through-hole, wherein the first locking member passes through the first through-hole, the second through-hole and the third through-hole to connect the first connecting portion, the second connecting portion and the second housing to each other. [7] Battery pack structure according to claim 2, characterized by that the first reinforcing element further comprises a first reinforcing rib which projects towards the side facing away from the first housing, wherein the first reinforcing rib increases the structural strength of the first reinforcing element. [8] Battery pack structure according to claim 7, characterized by , that the battery pack structure further comprises a second reinforcing element, wherein the second reinforcing element is arranged circumferentially around the first reinforcing element at a distance from the first reinforcing element, wherein the second reinforcing element comprises a main body and a second reinforcing rib, wherein the main body is connected to a side of the first reinforcing element facing away from the second housing, and wherein the second reinforcing rib is provided protruding from the main body toward the side facing away from the first reinforcing element; wherein the battery pack structure further comprises a second locking member extending through the first reinforcing rib, the second reinforcing rib and the second housing. [9] Battery pack structure according to claim 8, characterized bythat the first reinforcing rib is arranged at a distance from the second reinforcing rib, wherein the first reinforcing rib forms a first recess and the second reinforcing rib forms a second recess, wherein the first recess is located within the second recess. [10] Vehicle, characterized by that it comprises the battery pack structure according to one of claims 1 to 9.

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