Battery pack structure and vehicle

Abstract

This description provides a battery pack structure and a vehicle. A battery compartment is formed between a first and a second housing for the placement of a set of cells, and a housing provides effective protection for the cell set. A first connecting section and the second housing are interconnected to assemble the first and second housings. A first curved section extends towards the battery compartment, and a sealing element is located closer to the battery compartment, thus forming an encapsulation and sealing structure at the first connecting section and the first curved section. In addition, a sealing element is arranged circumferentially around the battery compartment to ensure the sealing of the area surrounding the battery compartment, and this sealing element also seals a connecting gap between the first and second housings.Figure for the abridged version: Fig. 1.

Description

Title of the invention: Battery pack structure and vehicle technical field

[0001] This description relates to the technical field of production and manufacture of vehicles, and more particularly to a battery pack structure and a vehicle.

[0002] CONTEXT

[0003] A vehicle's battery pack structure is used to store electrical energy, and this electrical energy powers the vehicle. The stability and airtightness of the battery pack structure are key factors in determining vehicle safety and play a crucial role during driving. Therefore, ensuring good stability and airtightness of the battery pack structure is a technical problem that must be addressed urgently.

[0004] SUMMARY

[0005] One of the objectives of this description is to provide a battery pack structure and a vehicle.

[0006] The present description provides a battery pack structure comprising a housing and a sealing element. The housing comprises a first housing and a second housing, a battery compartment is formed between the first housing and the second housing, the first housing has a first connecting part and a first curved part extending towards the battery compartment, a distance between the first connecting part and the second housing is greater than a distance between the first curved part and the second housing, the first connecting part is connected to the second housing, and the first curved part and the second housing are spaced to form an installation slot.The sealing element is positioned circumferentially around the battery compartment, the sealing element is placed in the installation slot, and two sides of the sealing element come abutting against the first curved part and the second housing respectively.

[0007] In an exemplary embodiment of this description, the battery pack structure further comprises a first reinforcing element, and the first reinforcing element is disposed on one side of the first housing away from the second housing.

[0008] In an exemplary embodiment of this description, the first reinforcing element comprises a second connecting part and a second curved part; the distance between the second connecting part and the second housing is greater than the distance between the second curved part and the second housing; the second connecting part abuts against the first connecting part on a the side of the first case away from the second case, and the second curved part comes to rest against the first curved part on one side of the first case away from the second case.

[0009] In an exemplary embodiment of this description, the first reinforcing element extends to the battery compartment, and one side of the first housing near the battery compartment is welded to one side of the first reinforcing element near the battery compartment.

[0010] In an embodiment by way of example of this description, the first connecting part is designed with a first through hole, and the second housing is designed with a second through hole corresponding to the first through hole; and the battery block structure further includes a first locking element, and the first locking element passes through the first through hole and the second through hole, so as to connect the first connecting part to the second housing.

[0011] In an exemplary embodiment of this description, the second connecting part of the first reinforcing element is designed with a third through hole, and the first locking element passes through the first through hole, the second through hole and the third through hole, allowing the interlinking of the first connecting part and the second connecting part with the second housing.

[0012] In an exemplary embodiment of this description, the first reinforcing element further comprises a first reinforcing rib which projects out to one side away from the first housing, and the first reinforcing rib reinforces the structural strength of the first reinforcing element.

[0013] In an embodiment by way of example of this description, the battery pack structure further comprises a second reinforcing element, the second reinforcing element is spaced on a circumferential side of the first reinforcing element, the second reinforcing element comprises a main body part and a second reinforcing rib, the main body part is connected to one side of the first reinforcing element away from the second housing, and the second reinforcing rib protrudes on one side of the main body part away from the first reinforcing element; and the battery pack structure further comprises a second locking element, and the second locking element passes through the first reinforcing rib, the second reinforcing rib and the second housing.

[0014] In an exemplary embodiment of this description, the first reinforcing rib and the second reinforcing rib are spaced apart, the first reinforcing rib is designed with a first recessed portion, the The second reinforcing rib is designed with a second recessed part, and the first recessed part is located within the second recessed part.

[0015] This description also provides a vehicle comprising the aforementioned battery pack structure.

[0016] The battery pack structure and the vehicle in the solutions described herein have the following beneficial effects: the battery compartment is formed between the first and second housings to house a set of cells, and the housing provides effective protection for the cell set. The first connecting section is linked to the second housing, and the distance between the first connecting section and the second housing is greater than the distance between the first curved section and the second housing, such that the first curved section and the second housing are spaced to form the installation slot. The sealing element is arranged circumferentially around the battery compartment and is located in the installation slot, and two sides of the sealing element abut against the first curved section and the second housing, respectively.The first connecting section and the second housing are interconnected to assemble the first and second housings. The first curved section extends towards the battery compartment, while the sealing element is closer to the battery compartment. The sealing element is positioned circumferentially around the battery compartment to ensure a seal around the battery compartment. It also seals a connecting gap between the first and second housings, thus reducing the intrusion of external substances into the battery compartment in a circumferential direction. Therefore, an encapsulation structure and a sealing structure are formed at the level of the first connecting section and the first curved section.Thus, the above design allows for good airtightness of the battery pack structure, which maintains the stability of the cell assembly and extends its lifespan.

[0017] Other features and advantages of this description will become more evident in the light of the detailed description that follows, or partially achieved through the practice of this description.

[0018] It should be understood that the general description above and the detailed description that follows are purely illustrative and explanatory and do not limit the present description. Brief description of the drawings

[0019] The accompanying drawings, which are incorporated to form part of this description, illustrate the examples in this description and, together with the description, serve to explain the principles of this description. Apparently, The drawings that accompany the following description show only a few examples of the present description, and other drawings can be derived from these accompanying drawings by people competent in the field without creative effort.

[0020] Fig. 1 illustrates a schematic structure diagram of a battery pack structure according to an embodiment of the present description.

[0021] [Fig.2] illustrates a schematic cross-sectional view at point AA in [Fig.1].

[0022] Fig. 3 illustrates an enlarged schematic diagram at point B in Fig. 2.

[0023] Figure 4 illustrates a partial schematic diagram of a battery pack structure. according to an embodiment of the present description.

[0024] [Fig.5] illustrates an enlarged schematic diagram at point C in [Fig.4].

[0025] Figure 6 illustrates a schematic diagram of a connection between a first housing, a first reinforcement element and a second reinforcement element in this description.

[0026] [Fig.7] illustrates an enlarged schematic diagram at point D in [Fig.6].

[0027] Description of reference numbers in drawings:

[0028] 10' cell assembly; 100' housing; 110' first housing; 111' first connecting part; 1111' first through hole; 112' first curved part; 120' second housing; 121' second through hole; 130' installation slot;

[0029] 200' sealing element; 300' battery compartment;

[0030] 400' first reinforcing element; 410' second connecting part; 411' third through hole; 420' second curved section; 430' first reinforcing rib; 431' first recessed section;

[0031] 510' first locking element; 520' second locking element;

[0032] 600' second reinforcing element; 610' second reinforcing rib; 611' second part in retreat; 620' main body part.

[0033] DETAILED DESCRIPTION OF THE EMBODIMENT METHODS

[0034] The exemplary embodiments are described in more detail with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be interpreted as being limited to the examples described herein. On the contrary, these embodiments are provided in such a way as to make this description more exhaustive and complete, and to fully convey the concept of the exemplary embodiments to those competent in the field.

[0035] The described features, structures, or specificities can be incorporated into one or more embodiments in any suitable manner. Many specific details are provided in the following description to permit A complete understanding of the embodiments of this description is required. However, those competent in the field will know that the technical solutions in this description can be implemented without one or more of the specific details, or by using other methods, components, apparatus, steps, or other means. In other cases, well-known methods, apparatus, embodiments, or operations are not illustrated or described in detail so as not to obscure certain aspects of this description.

[0036] This description is further described below, with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of this description described below can be combined with one another as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are by way of example and serve only to explain this description, but should not be interpreted as a limitation of this description.

[0037] It should be noted that the term "multiple," as used here, refers to two or more elements. "And / or" describes the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A alone, or A and B, or B alone. The character " / " generally indicates an "or" relationship between contextually associated objects.

[0038] A vehicle's battery pack structure is used to store electrical energy, and this electrical energy powers the vehicle. The stability and airtightness of the battery pack structure are key factors in determining vehicle safety and play a crucial role during driving. Therefore, ensuring good stability and airtightness of the battery pack structure is a technical problem that must be addressed urgently.

[0039] To solve the aforementioned technical problem, with reference to Figures 1 to 3, the present description proposes a battery pack structure comprising a housing 100 and a sealing element 200. The housing 100 comprises a first housing 110 and a second housing 120. A battery compartment 300 is formed between the first housing 110 and the second housing 120. The first housing 110 comprises a first connecting portion 111 and a first curved portion 112 extending towards the battery compartment 300. The distance between the first connecting portion 111 and the second housing 120 is greater than the distance between the first curved portion 112 and the second housing 120. The first connecting portion 111 is connected to the second housing 120, and the first curved portion 112 and the second housing 120 are spaced to form an installation slot. 130.The sealing element 200 is arranged in a circumferential direction of the battery compartment 300, the sealing element 200. is arranged in the installation slot 130, and two sides of the sealing element 200 come respectively against the first curved part 112 and the second housing 120.

[0040] A battery compartment 300 is formed between the first housing 110 and the second housing 120 to house a set of cells 10, and the housing 100 provides effective protection for the set of cells 10. The first connecting part 111 is connected to the second housing 120. The distance between the first connecting part 111 and the second housing 120 is greater than the distance between the first curved part 112 and the second housing 120, so that the first curved part 112 and the second housing 120 are spaced to form the installation slot 130. The sealing element 200 is arranged in the circumferential direction of the battery compartment 300 and is located in the installation slot 130, and two sides of the sealing element 200 abut against the first curved part 112 and the second housing 120, respectively.The first connecting section 111 and the second housing 120 are interconnected to assemble the first housing 110 and the second housing 120. The first curved section 112 extends towards the battery compartment 300, and the sealing element 200 is closer to the battery compartment 300. The sealing element 200 is arranged circumferentially around the battery compartment 300 to ensure the sealing of the area surrounding the battery compartment 300, and the sealing element 200 also seals a connecting gap between the first housing 110 and the second housing 120, thus reducing the intrusion of external substances into the battery compartment 300 in the circumferential direction. Therefore, an encapsulation structure and a sealing structure are formed at the first connecting section 111 and the first curved section 112.Thus, the above design allows for good airtightness of the battery pack structure, which maintains the stability of the entire cell assembly and extends its lifespan.

[0041] In certain embodiments, the first housing 110 or the second housing 120 can be connected to the vehicle chassis. The first housing 110 or the second housing 120 is integrated into the vehicle chassis, which allows for an integral formation of the battery pack and chassis (also called CTP / CTC / CTB), which can improve the strength of the vehicle chassis while reducing the weight of the battery pack.

[0042] In some embodiments, the material of the first housing 110 and the second housing 120 may be a metal, including, but not limited to, iron, copper, aluminum, or their alloys. The first housing 110 and the second housing 120 are formed by stamping, and the first housing 110 and the second housing 120 are stamped separately to form grooves. The battery compartment 300 is formed by means of the groove in the first housing 110 and the groove in the second housing 120.

[0043] In some embodiments, the battery compartment 300 is used to receive the cell assembly 10, and the cell assembly 10 comprises, but is not limited to, a cell, a connecting wire, and a connecting element. Several cells may be designed, and the cells are interconnected by means of connecting wires and connecting elements to form the cell assembly 10.

[0044] In some embodiments, the material of the sealing element 200 comprises, but is not limited to, rubber, plastic, textiles and metal, and is specifically chosen according to real conditions.

[0045] In certain embodiments, with reference to Figures 2 and 3, the battery block structure further comprises a first reinforcing element 400, and the first reinforcing element 400 is disposed on one side of the first housing 110 away from the second housing 120. The first reinforcing element 400 is made of metal and forms a layered structure with the first housing 110, thus improving the structural strength of the first housing 110.

[0046] In addition, the first reinforcing element 400 has a second connecting part 410 and a second curved part 420, a distance between the second connecting part 410 and the second housing 120 is greater than a distance between the second curved part 420 and the second housing 120, the second connecting part 410 abuts against the first connecting part 111 on one side of the first housing 110 away from the second housing 120, and the second curved part 420 abuts against the first curved part 112 on one side of the first housing 110 away from the second housing 120.Since the distance between the second connecting part 410 and the second housing 120 is set to be greater than the distance between the second curved part 420 and the second housing 120, the first reinforcing element 400 and the first housing 110 form corresponding shapes, so that the second connecting part 410 and the first connecting part 111 form a layered structure, and the second curved part 420 and the first curved part 112 form a layered structure. The first connecting part 111 and the first curved part 112 are thus reinforced.

[0047] In some embodiments, the first connecting part 111 is welded to the second connecting part 410, and the first curved part 112 is welded to the second curved part 420. A transition part is formed between the first connecting part 111 and the first curved part 112, and a transition part is also formed between the second connecting part 410 and the second curved part 420, with a set space between the two transition parts to facilitate error adjustment between them.

[0048] In certain embodiments, with reference to Figures 2 and 3, the first reinforcing element 400 extends to the battery compartment 300, and one side of the first housing 110 near the battery compartment 300 is welded to a The side of the first reinforcement element 400 is close to the battery compartment 300. Welding the first housing 110 to the first reinforcement element 400 on the side closest to the battery compartment 300 can improve the strength of the bond between the first reinforcement element 400 and the first housing 110. The joint between the first housing 110 and the second housing 120 is subjected to pressure from the cell assembly 10, and the joint between the first housing 110 and the second housing 120 must be formed by stamping, resulting in greater stress at this joint. Thus, the joint between the first housing 110 and the second housing 120 is more susceptible to cracking or breaking. Therefore, extending the first reinforcement element 400 to the bottom of the battery compartment 300 can increase the length of the first reinforcement element 400, thereby appropriately improving the strength of the first housing 110.In addition, the first 400 reinforcement element provides localized reinforcement, which helps to reduce the materials used and costs.

[0049] In certain embodiments, with reference to Figures 2 and 3, the first connecting part 111 is designed with a first through hole 1111, and the second housing 120 is designed with a second through hole 121 corresponding to the first through hole 1111. The battery block structure further includes a first locking element 510, and the first locking element 510 passes through the first through hole 1111 and the second through hole 121, so as to connect the first connecting part 111 to the second housing 120.

[0050] The second connecting part 410 of the first reinforcing element 400 is designed with a third through hole 411, and the first locking element 510 passes through the first through hole 1111, the second through hole 121 and the third through hole 411, allowing the interlinking of the first connecting part 111 and the second connecting part 410 with the second housing 120.

[0051] The first locking element 510 comprises, but is not limited to, a bolt, a rivet, and a locking pin. For example, the first locking element 510 is a bolt, and the bolt is used to connect the first connecting part 111 and the second connecting part 410, thus facilitating disassembly and assembly. Once the cell assembly 10 is placed in the battery compartment 300, the first housing 110, the second housing 120, and the first reinforcing element 400 are assembled using bolts. The bolt tightness can also be adjusted to set the height of the installation slot 130, thereby adjusting the seal of the sealing element 200. Furthermore, compared to rivet joining, bolt joining reduces the investment in rivets and therefore costs.

[0052] In certain embodiments, with reference to Figures 4 to 7, the first reinforcing element 400 further comprises a first reinforcing rib 430 which projects to one side away from the first housing 110, and the first reinforcing rib 430 reinforces the structural strength of the first reinforcing element 400. The first reinforcing rib 430 can provide reinforcement while reducing the weight of the first reinforcing element 400, thereby reducing the weight of the vehicle.

[0053] In certain embodiments, with reference to Figures 4 to 7, the battery block structure further comprises a second reinforcing element 600, the second reinforcing element 600 is spaced on a circumferential side from the first reinforcing element 400. The second reinforcing element 600 comprises a main body part 620 and a second reinforcing rib 610, the main body part 620 is connected to one side of the first reinforcing element 400 away from the second housing 120, and the second reinforcing rib 610 projects on one side of the main body part 620 away from the first reinforcing element 400.

[0054] The battery pack structure further includes a second locking element 520, and the second locking element 520 passes through the first reinforcing rib 430, the second reinforcing rib 610 and the second housing 120. The second reinforcing element 600 can further reinforce the first reinforcing element 400. When the second locking element 520 passes through the first reinforcing rib 430, the second reinforcing rib 610 and the second housing 120 to connect the three, the second reinforcing element 600 can strengthen the joint, thus cooperating with the first locking element 510 to strengthen the bond between the first housing 110, the second housing 120, the first reinforcing element 400 and the second reinforcing element 600.

[0055] In certain embodiments, with reference to Figures 4 to 7, the first reinforcing rib 430 and the second reinforcing rib 610 are spaced apart. The first reinforcing rib 430 is designed with a first recessed portion 431, the second reinforcing rib 610 is designed with a second recessed portion 611, and the first recessed portion 431 is located within the second recessed portion 611. The first recessed portion 431 and the second recessed portion 611 are formed by stamping. The first recessed portion 431 is located within the second recessed portion 611 and is spaced apart, forming a buffer between the first reinforcing element 400, the second reinforcing element 600, and the second housing 120, which can reduce the stress on the second locking element 520.

[0056] In the present description, the battery pack structure comprises the first housing 110, the second housing 120, the first reinforcing element 400 and the second Reinforcing element 600. The battery compartment 300 is formed between the first housing 110 and the second housing 120 to house a set of cells 10, and the housing 100 provides effective protection for the set of cells 10. The first connecting part 111 of the first housing 110 and the second housing 120 are interconnected to assemble the first housing 110 and the second housing 120. The first curved part 112 extends towards the battery compartment 300, and the sealing element 200 is closer to the battery compartment 300, thus forming an encapsulation structure and a sealing structure at the level of the first connecting part 111 and the first curved part 112.Furthermore, the sealing element 200 is positioned circumferentially around the battery compartment 300 to ensure the seal of the area surrounding the battery compartment 300. This same element also seals the connection between the first casing 110 and the second casing 120, thus reducing the intrusion of external substances into the battery compartment 300 in the circumferential direction. The first reinforcing element 400 strengthens the seal between the first casing 110 and the second casing 120. Additionally, the placement of the second locking element 520 between the first reinforcing element 400 and the second casing 120 further enhances the strength of the connection. Therefore, the above design provides good airtightness and strong connection strength for the battery pack structure, maintaining the stability of the cell assembly 10 and extending its service life.

[0057] This description also proposes a vehicle comprising the aforementioned battery pack structure.

[0058] In this description, unless otherwise specified, the terms "arrange (design)" and "connect" are to be understood in a broad sense. For example, a connection may be a fixed connection, a removable connection, or an integral connection; may be a mechanical connection or an electrical connection; may be a direct connection or an indirect connection using an intermediate means; or may be a communication or interaction between two components. Persons competent in the field may understand specific meanings of these terms in this description depending on specific situations.

[0059] In this description, the description of terms such as "certain embodiments" means that a specific feature, structure, material, or characteristic of an embodiment is included in at least one embodiment of this description. In this description, the schematic representations of the aforementioned terms do not necessarily refer to the same embodiment or example. Furthermore, the described feature, structure, characteristic, or material may be combined in an appropriate manner in one or more embodiments or examples. In addition, the persons Competent in the field can combine different embodiments or examples described in this description and specifics of the different embodiments or examples without contradicting each other.

[0060] Although the embodiments of this description have been shown and described above, it is understood that the aforementioned embodiments are by way of example and shall not be considered as limitations of this description. Those competent in the field may change, modify, replace, and alter the above embodiments within the scope of this description. Therefore, all changes or modifications made in accordance with the claims and the description in this document must remain within the scope of this description.

Claims

Demands

1. Battery pack structure, comprising: a housing, in which the housing comprises a first housing and a second housing, a battery compartment is formed between the first housing and the second housing, the first housing comprises a first connecting part and a first curved part extending towards the battery compartment, a distance between the first connecting part and the second housing is greater than a distance between the first curved part and the second housing, the first connecting part is connected to the second housing, and the first curved part and the second housing are spaced to form an installation slot;and a sealing element, wherein the sealing element is disposed in a circumferential direction of the battery compartment, the sealing element is disposed in the installation slot, and two sides of the sealing element come respectively abutting against the first curved part and the second housing.;

2. Battery pack structure according to claim 1, wherein the battery pack structure further comprises a first reinforcing element, and the first reinforcing element is disposed on one side of the first housing away from the second housing.

3. Battery block structure according to claim 2, wherein the first reinforcement element comprises a second connecting part and a second curved part, a distance between the second connecting part and the second housing is greater than a distance between the second curved part and the second housing, the second connecting part abuts against the first connecting part on one side of the first housing away from the second housing, and the second curved part abuts against the first curved part on one side of the first housing away from the second housing.

4. Battery pack structure according to claim 3, wherein the first reinforcing element extends to the battery compartment, and one side of the first housing near the battery compartment is welded to one side of the first reinforcing element near the battery compartment.

5. Battery pack structure according to claim 4, wherein The first connecting part is designed with a first through hole, and the second housing is designed with a second through hole corresponding to the first through hole; and the battery block structure further includes a first locking element, and the first locking element passes through the first through hole and the second through hole, so as to connect the first connecting part to the second housing.

6. Battery pack structure according to claim 5, wherein the second connecting part of the first reinforcing element is designed with a third through hole, and the first locking element passes through the first through hole, the second through hole and the third through hole, allowing the interlinking of the first connecting part and the second connecting part with the second housing.

7. Battery pack structure according to claim 2, wherein the first reinforcing element further comprises a first reinforcing rib which projects to one side away from the first housing, and the first reinforcing rib reinforces the structural strength of the first reinforcing element.

8. Battery pack structure according to claim 7, wherein the battery pack structure further comprises a second reinforcing element, the second reinforcing element is spaced on a circumferential side of the first reinforcing element, the second reinforcing element comprises a main body part and a second reinforcing rib, the main body part is connected to one side of the first reinforcing element away from the second housing, and the second reinforcing rib projects on one side of the main body part away from the first reinforcing element; and the battery pack structure further comprises a second locking element, and the second locking element passes through the first reinforcing rib, the second reinforcing rib and the second housing.

9. Battery pack structure according to claim 8, wherein the first reinforcing rib and the second reinforcing rib are spaced apart, the first reinforcing rib is designed with a first recessed portion, the second rib 14 of reinforcement is designed with a second recessed part, and the first recessed part is located within the second recessed part.

10. Vehicle, comprising the battery pack structure according to any one of claims 1 to 9.

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