Anti-explosion valve mounting structure, battery pack supporting structure, battery pack and electric equipment

Abstract

The utility model discloses an explosion-proof valve installation structure, battery pack support structure, battery pack and electric equipment, the explosion-proof valve installation structure comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve are connected and fixed, the channel area of the first sleeve is inconsistent with the channel area of the second sleeve, and the channel area of the second sleeve is inconsistent with the channel area of the first sleeve. And an anti-explosion valve is mounted in the second sleeve through threads. The explosion-proof valve mounting structure penetrates through a boundary beam of the battery pack supporting structure, the first sleeve penetrates through the inner side end face of the boundary beam, and the second sleeve penetrates through the outer side end face of the boundary beam so as to communicate the inside and the outside of the battery pack supporting structure. According to the scheme, the size of the second sleeve can be changed under the condition that the size of the first sleeve is not changed so as to adapt to battery pack supporting structures of more models. When the second sleeve is larger than the first sleeve, the shape of the boundary beam can be adapted, and the requirement for the air displacement of the battery pack can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an explosion-proof valve installation structure, a battery pack supporting structure, a battery pack and electrical equipment. Background Art

[0002] At present, in order to ensure the safety performance of the battery, an explosion-proof valve is generally installed on the battery pack shell to achieve the purpose of pressure relief and temperature reduction. With the development of new energy, improving the flexibility of battery assembly adaptation and saving costs have become hot issues in current research.

[0003] Normally, the explosion-proof valve installation structure adopts a through-hole design with consistent apertures at both ends. A sleeve of one size can only be adapted to one size of explosion-proof valve, which makes it difficult to meet the requirements of battery assembly flexibility. Specifically, a through-hole is provided on the inner end face of the side beam of the battery pack support structure for the sleeve to pass through, but the size of the through-hole on the inner end face of the side beam is limited by the internal structure of the battery pack support structure, that is, the channel area of ​​the sleeve is limited by the battery pack support structure, and the size of the explosion-proof valve is also limited by the channel area size of the sleeve. Ultimately, the choice of explosion-proof valve is subject to the structure of the inner end face of the side beam in the battery pack support structure, and it is difficult to adapt to the choice of explosion-proof valve specifications and types for different battery packs. For battery packs with different exhaust requirements, a different number of explosion-proof valve installation structures with consistent apertures are required, which is relatively costly. Utility Model Content

[0004] The utility model content section of the utility model does not mean an attempt to limit the key features and necessary technical features of the technical solution claimed for protection, nor does it mean an attempt to determine the protection scope of the technical solution claimed for protection.

[0005] In order to at least partially solve the above technical problems, the utility model provides an explosion-proof valve installation structure, the explosion-proof valve installation structure includes an explosion-proof valve installation structure, the explosion-proof valve installation structure includes a first sleeve 1 and a second sleeve 2, an explosion-proof valve is arranged in the second sleeve 2, the first sleeve 1 and the second sleeve 2 are connected and fixed, and the channel area of ​​the first sleeve 1 is inconsistent with the channel area of ​​the second sleeve 2.

[0006] Optionally, the channel area of ​​the second sleeve 2 is larger than the channel area of ​​the first sleeve 1 , and the explosion-proof valve is installed in close contact with the second sleeve 2 .

[0007] Optionally, the inner wall of the second sleeve 2 is provided with an internal thread, and the main body 51 of the explosion-proof valve is provided with an external thread, and the internal thread cooperates with the external thread to install the explosion-proof valve.

[0008] Optionally, a flange 3 is provided at one end of the second sleeve 2 away from the first sleeve 1 , and the flange 3 is provided along the circumference of the second sleeve 2 for abutting against a battery pack support structure.

[0009] Optionally, an end cap 52 is provided at one end of the explosion-proof valve, an edge of the end cap 52 at least partially protrudes from the main body 51 of the explosion-proof valve, and the end cap 52 abuts against the flange 3 .

[0010] Optionally, a first sealing portion is provided on an end surface of the end cap 52 facing the flange 3 , and the first sealing portion is provided with a first sealing member, which is used to seal and connect the end cap 52 and the flange 3 .

[0011] Optionally, a chamfer 31 is provided on the inner side of the flange 3 facing away from the second sleeve 2 .

[0012] Optionally, a connecting portion 4 is provided between the first sleeve 1 and the second sleeve 2 , and the connecting portion 4 is used to connect and conduct the first sleeve 1 and the second sleeve 2 .

[0013] The utility model also provides a battery pack support structure, which includes the explosion-proof valve installation structure and the side beam 6 described in any of the above embodiments, the first sleeve 1 and the second sleeve 2 are passed through the side beam 6, and the explosion-proof valve installation structure connects the inside and outside of the battery pack support structure.

[0014] Optionally, the side beam 6 is a hollow structure, and the side beam 6 has a first end surface 61 and a second end surface 62 on both sides along the width direction;

[0015] The first end face 61 is provided with a first through hole 611, and the second end face 62 is provided with a second through hole 621. The first through hole 611 is adapted to the first sleeve 1 for the first sleeve 1 to pass through the first end face 61, and the second through hole 621 is adapted to the second through hole 621 for the second sleeve 2 to pass through the second end face 62.

[0016] Optionally, the first sleeve 1 and the second sleeve 2 are located on different axes.

[0017] Optionally, a flange 3 is provided at one end of the second sleeve 2 facing away from the first sleeve 1 , a second sealing portion is provided on the side of the flange 3 facing the second end face 62 , a second sealing element is provided in the second sealing portion, and the second sealing element is provided between the flange 3 and the second end face 62 .

[0018] The utility model also provides a battery pack, comprising the battery pack support structure and the battery described in any one of the above embodiments.

[0019] The utility model also provides an electrical device, which includes the battery pack and the electrical appliance.

[0020] Through the above technical solution, the present application provides an explosion-proof valve installation structure. By setting a first sleeve and a second sleeve with different channel areas, the explosion-proof valve installation structure can adapt to explosion-proof valves of different types and sizes by changing the channel area of ​​the second sleeve without changing the size of the first sleeve under the premise of satisfying the internal structure of the battery pack support structure. Without changing the internal structure of the battery pack support structure, it can flexibly adapt to the different needs of different battery packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the advantages of the utility model more easily understood, the utility model briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the utility model and should not be considered as limiting the scope of protection thereof. The utility model is described and explained with additional characteristics and details through the accompanying drawings.

[0022] Figure 1 An exploded view of the explosion-proof valve installation structure provided in this application;

[0023] Figure 2 A schematic diagram of the explosion-proof valve installation structure provided in this application;

[0024] Figure 3 A schematic diagram of the explosion-proof valve installation structure and explosion-proof valve assembly provided in this application;

[0025] Figure 4 An exploded view of the battery pack support structure provided in this application;

[0026] Figure 5 This is a schematic diagram of the assembly of the battery pack support structure and explosion-proof valve installation structure provided in this application.

[0027] Description of Reference Numerals

[0028] 1- first sleeve;

[0029] 2- second sleeve;

[0030] 3-flange; 31-chamfer;

[0031] 4-Connection part;

[0032] 5-explosion-proof valve; 51-main body; 52-end cap;

[0033] 6-side beam; 61-first end surface; 62-second end surface;

[0034] 611 - first through hole; 621 - second through hole; DETAILED DESCRIPTION

[0035] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower" and similar expressions used herein are only for the purpose of illustration and are not intended to be limiting.

[0037] Herein, ordinal numbers such as “first” and “second” cited in this application are merely identifications and do not have any other meanings, such as a specific order or the like.

[0038] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0039] The embodiment of the utility model provides an electric device, which includes an electric device and a battery pack. The electric device includes but is not limited to new energy vehicles, computers, airplanes, etc.

[0040] An embodiment of the utility model further provides a battery pack, which includes a battery and a battery pack support structure, and the battery pack support structure is used to support and protect the battery assembly.

[0041] The present utility model provides a battery pack support structure, such as Figure 4 As shown, the battery pack support structure includes a side beam 6 and an explosion-proof valve installation structure, and the explosion-proof valve installation structure includes: a first sleeve 1 and a second sleeve 2, an explosion-proof valve is arranged in the second sleeve 2, the first sleeve 1 and the second sleeve 2 are connected and fixed, and the channel area of ​​the first sleeve 1 is inconsistent with the channel area of ​​the second sleeve 2. The first sleeve 1 and the second sleeve 2 are penetrated by the side beam 6, and the explosion-proof valve installation structure connects the inside and outside of the battery pack support structure. In the event of an accident such as thermal runaway of the battery, the air pressure breaks through the explosion-proof valve and discharges the gas inside the battery pack out of the battery pack to improve the safety performance of the battery pack.

[0042] Normally, the installation structure of the explosion-proof valve uses an installation structure with consistent upper and lower apertures to install the explosion-proof valve. This type of explosion-proof valve installation structure can only adapt to one type of explosion-proof valve with one aperture. When the explosion-proof valve installation structure is assembled to the side beam 6 of the battery pack support structure, a through hole is set on the end face of the side beam 6 for the sleeve to pass through to connect the inside and outside of the battery pack. Since the size of the through hole on the inner end face of the side beam 6 is limited by the internal structure of the battery pack support structure, the channel area of ​​the sleeve is limited by the size of the through hole, that is, the size of the sleeve is limited by the battery pack support structure. The explosion-proof valve installation structure with consistent upper and lower apertures, the size of the explosion-proof valve is also subject to the size of the channel area of ​​the sleeve, and it is difficult to adapt to the selection of explosion-proof valve types and specifications for different battery packs. For battery packs with different exhaust requirements, a different number of explosion-proof valve installation structures with consistent apertures are required, which is relatively costly. The channel area of ​​the first sleeve 1 of the explosion-proof valve installation structure provided in the present application is different from the channel area size of the second sleeve 2. The first sleeve 1 is installed on the inner side of the side beam 6, and the second sleeve 2 is installed on the outer side of the side beam 6. Since the through hole on the inner side of the side beam 6 is limited by the battery pack support structure, the channel area of ​​the second sleeve 2 of different sizes can be adapted by adjusting the through hole size on the outer end face of the side beam 6 while the channel area of ​​the first sleeve 1 remains unchanged. The second sleeve 2 of different channel area sizes can be used to install explosion-proof valves of different sizes, which can effectively improve the flexibility of the explosion-proof valve installation structure to adapt to the battery pack support structure.

[0043] In one embodiment, the side beam 6 is a hollow structure, and a first end face 61 and a second end face 62 are provided on both sides along the width direction of the side beam 6. The first end face 61 is provided with a first through hole 611, which is adapted to the first sleeve 1 and is used for the first sleeve 1 to pass through the first end face 61. The second end face 62 is provided with a second through hole 621, which is adapted to the second sleeve 2 and is used for the second sleeve 2 to pass through the second sleeve 2. The hollow side beam 6 structure is conducive to the installation of the explosion-proof valve. Since the present application can change the channel area of ​​the second sleeve 2 without changing the first sleeve 1, the corresponding connecting portion 4 also needs to be adjusted accordingly. The hollow side beam 6 structure is convenient for the disassembly and assembly of the explosion-proof valve installation structure, and can also accommodate second sleeves 2 and connecting portions 4 of different sizes.

[0044] In one embodiment, the first sleeve 1 and the second sleeve 2 are located on different axes. Limited by the structure of the side beam 6, the first through hole 611 and the second through hole 621 are usually arranged near the edge of the side beam 6. Since the position of the first through hole 611 is limited by the internal structure of the battery pack support structure and is difficult to move, if the first through hole 611 and the second through hole 621 are on the same axis, the size of the second through hole 621 is limited by an upper limit. When the second sleeve 2 requires a larger passage area, the second through hole 621 may exceed the side beam 6 in order to adapt to the second sleeve 2. The position of the second through hole 621 on the second end face 62 is relatively free. The second through hole 621 is arranged away from the edge of the side beam 6 so that it can accommodate a larger second sleeve 2 to install a larger explosion-proof valve. At this time, the first through hole 611 is located near the edge of the side beam 6 due to the structure of the side beam 6, and the second through hole 621 is arranged relatively far away from the edge of the side beam 6 to accommodate a larger second sleeve 2. In summary, the first through hole 611 and the second through hole 621 are located on different axes, and correspondingly, the central axes of the first sleeve 1 and the second sleeve 2 are also located on different axes. When the first sleeve 1 and the second sleeve 2 are located on different axes, the connecting part 4 connecting the first sleeve 1 and the second sleeve 2 will produce corresponding bending.

[0045] In one embodiment, if Figure 5 As shown, a flange 3 is provided at one end of the second sleeve 2 facing away from the first sleeve 1, and the flange is used to abut against the battery pack support structure to assemble the explosion-proof valve mounting structure. A second sealing portion is provided on the side of the flange 3 facing the second end face 62, and a second sealing member is provided in the second sealing portion. The second sealing member is clamped between the flange 3 and the second end face 62 to improve the sealing performance between the flange 3 and the second end face 62.

[0046] The utility model provides an explosion-proof valve installation structure. The explosion-proof valve installation structure is assembled on the battery pack support structure. Figure 1 The explosion-proof valve installation structure comprises a first sleeve 1 and a second sleeve 2, wherein the first sleeve 1 and the second sleeve 2 are provided with an explosion-proof valve, the first sleeve 1 and the second sleeve 2 are connected and fixed, and the channel area of ​​the first sleeve 1 is inconsistent with the channel area of ​​the second sleeve 2. The inconsistent channel areas of the second sleeves can more flexibly adapt to the shape of the battery pack support structure.

[0047] In one embodiment, an explosion-proof valve is provided in the second sleeve 2, and the explosion-proof valve is installed in close contact with the inner wall of the second sleeve 2. The channel area of ​​the second sleeve 2 is larger than the channel area of ​​the first sleeve 1. It is understandable that the size of the first sleeve 1 is limited by the shape and structure of the side beam 6 of the battery pack support structure. Its size is small and difficult to adjust. However, in the compact internal battery structure, when it is thermally runaway, the gas production is large. Usually, multiple explosion-proof valves and explosion-proof valve installation structures need to be set, which is costly. In addition, the internal structure of the explosion-proof valve is provided with springs, supporting components, etc., which occupy a certain exhaust area. If the channel areas of the first sleeve 1 and the second sleeve 2 are the same, since the springs and supporting components of the internal structure of the explosion-proof valve in the second sleeve 2 occupy a certain space, the effective exhaust channel area in the second sleeve 2 after the explosion-proof valve is installed is smaller than the original channel area of ​​the second sleeve 2. In order to increase the exhaust volume, in addition to setting up multiple explosion-proof valve structures, the channel area of ​​the second sleeve 2 can also be increased so that it can install a larger explosion-proof valve to meet the exhaust volume requirements. Therefore, the present application can adapt to the shape of the battery pack support structure, and can use a smaller number of explosion-proof valves to meet the exhaust requirements of the battery pack.

[0048] In one embodiment, if Figure 2 As shown, the inner wall of the second sleeve 2 is provided with an internal thread, and the main body 51 of the explosion-proof valve is provided with an external thread that matches the internal thread. Specifically, when installing the explosion-proof valve, the external thread of the explosion-proof valve matches the internal thread of the second sleeve 2, and the explosion-proof valve is installed into the second sleeve 2 by rotation. It can be understood that the explosion-proof valve is connected and fixed in the second sleeve 2 by threading, and the internal thread occupies a limited space in the second sleeve 2, which can improve the volume density of the explosion-proof valve installation structure; the internal thread and the external thread match each other, and the connection is also more stable. In addition, the process flow of thread preparation is also relatively simple.

[0049] In one embodiment, a flange 3 is provided at one end of the second sleeve 2 away from the first sleeve 1, and the flange 3 is provided along the circumference of the second sleeve 2. The flange 3 is used to abut against the battery pack support structure. Preferably, the end surface of the flange 3 facing the second sleeve 2 is welded and fixed to the outer side surface of the side beam 6 of the battery pack support structure.

[0050] In one embodiment, if Figure 3As shown, an end cap 52 is provided at one end of the explosion-proof valve, and the edge of the end cap 52 at least partially protrudes from the main body 51 of the explosion-proof valve, and the end cap 52 abuts against the flange 3. It is understandable that since the main body 51 of the explosion-proof valve is relatively small in size and there are external threads on its surface, it is difficult to install it by rotating the threads. In the present application, by providing an end cap 52 that is relatively protruding relative to the main body 51 of the explosion-proof valve, the main body 51 of the explosion-proof valve can be rotated into the second sleeve 2 through the threads by holding the end of the end cap 52 during the assembly process, thereby improving the convenience of assembly. In addition, the end cap 52 abuts against the flange 3, which can ensure that the position of the explosion-proof valve is relatively fixed, is not easily displaced, and is relatively convenient to replace the explosion-proof valve.

[0051] In one embodiment, a first sealing portion is provided on the end surface of the explosion-proof valve end cap 52 facing the flange 3, and the first sealing portion is provided with a first sealing member, and the first sealing member is used to seal the end cap 52 and the flange 3. When the end cap 52 and the flange 3 are in contact, the first sealing member is clamped between the end cap 52 and the flange 3, which can effectively improve the sealing performance between the end cap 52 and the flange 3.

[0052] In one embodiment, the inner side of the flange 3 facing away from the second sleeve 2 is provided with a chamfer 31. It can be understood that when installing the explosion-proof valve, the chamfer 31 can be used as a guide structure to facilitate the assembly of the explosion-proof valve.

[0053] In one embodiment, a connecting portion 4 is provided between the first sleeve 1 and the second sleeve 2, and the connecting portion 4 is used to connect and conduct the first sleeve 1 and the second sleeve 2. Specifically, one end of the connecting portion 4 is connected and fixed to the end of the first sleeve 1 facing the second sleeve 2, and the other end of the connecting portion 4 is connected and fixed to the end of the second sleeve 2 facing the first sleeve 1. It can be understood that in order to ensure the overall sealing performance of the explosion-proof valve installation structure, it is necessary to set the connecting portion 4 to conduct the first sleeve 1 and the second sleeve 2. Since the channel area of ​​the first sleeve 1 is inconsistent with the channel area of ​​the second sleeve 2, the channel areas at both ends of the connecting portion 4 are also different. Preferably, the thickness of the connecting portion 4 is consistent from top to bottom. At this time, the connecting portion 4 as a whole presents a certain tilt angle. When the connecting portion 4 connects the first sleeve 1 and the second sleeve 2, the connection between the first sleeve 1 and the second sleeve 2 presents a certain tilt angle, which can improve the safety of the explosion-proof valve installation structure.

[0054] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

[0055] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

Claims

1. An explosion-proof valve installation structure, characterized in that: The explosion-proof valve installation structure comprises a first sleeve (1) and a second sleeve (2), wherein the explosion-proof valve is arranged in the second sleeve (2), the first sleeve (1) and the second sleeve (2) are connected and fixed, and the channel area of ​​the first sleeve (1) is inconsistent with the channel area of ​​the second sleeve (2).

2. The explosion-proof valve installation structure according to claim 1, characterized in that: The channel area of ​​the second sleeve (2) is greater than the channel area of ​​the first sleeve (1), and the explosion-proof valve is installed in close contact with the second sleeve (2).

3. The explosion-proof valve installation structure according to claim 1, characterized in that: The inner wall of the second sleeve (2) is provided with an internal thread, and the main body (51) of the explosion-proof valve is provided with an external thread, and the internal thread and the external thread cooperate with each other to install the explosion-proof valve.

4. The explosion-proof valve installation structure according to claim 1 or 2, characterized in that: A flange (3) is provided at one end of the second sleeve (2) away from the first sleeve (1); the flange (3) is provided along the circumference of the second sleeve (2) and is used to abut against the battery pack support structure.

5. The explosion-proof valve installation structure according to claim 4, characterized in that: An end cap (52) is provided at one end of the explosion-proof valve, the edge of the end cap (52) at least partially protrudes from the main body (51) of the explosion-proof valve, and the end cap (52) abuts against the flange (3).

6. The explosion-proof valve installation structure according to claim 5, characterized in that: A first sealing portion is provided on the end surface of the end cap (52) facing the flange (3), and the first sealing portion is provided with a first sealing member, and the first sealing member is used to seal and connect the end cap (52) and the flange (3).

7. The explosion-proof valve installation structure according to claim 4, characterized in that: The inner side of the flange (3) facing away from the second sleeve (2) is provided with a chamfer (31).

8. The explosion-proof valve installation structure according to claim 1, characterized in that: A connecting portion (4) is provided between the first sleeve (1) and the second sleeve (2), and the connecting portion (4) is used to connect and conduct the first sleeve (1) and the second sleeve (2).

9. A battery pack support structure, characterized in that: The battery pack support structure comprises an explosion-proof valve mounting structure and a side beam (6) as described in any one of claims 1 to 8, the first sleeve (1) and the second sleeve (2) are passed through the side beam (6), and the explosion-proof valve mounting structure connects the inside and outside of the battery pack support structure.

10. The battery pack support structure according to claim 9, characterized in that: The side beam (6) is a hollow structure, and the side beam (6) has a first end surface (61) and a second end surface (62) on both sides along the width direction; The first end surface (61) is provided with a first through hole (611), and the second end surface (62) is provided with a second through hole (621). The first through hole (611) is adapted to the first sleeve (1) and is used for the first sleeve (1) to pass through the first end surface (61). The second through hole (621) is adapted to the second through hole (621) and is used for the second sleeve (2) to pass through the second end surface (62).

11. The battery pack support structure according to claim 10, characterized in that: The first sleeve (1) and the second sleeve (2) are located on different axes.

12. The battery pack support structure according to claim 9, characterized in that: The side beam (6) has a first end face (61) and a second end face (62) on both sides along the width direction; a flange (3) is provided at one end of the second sleeve (2) facing away from the first sleeve (1); a second sealing portion is provided on the side of the flange (3) facing the second end face (62); a second sealing member is provided in the second sealing portion; and the second sealing member is provided between the flange (3) and the second end face (62).

13. A battery pack, characterized in that: A battery pack support structure and a battery comprising any one of claims 9 to 12.

14. An electrical device, characterized in that: The electrical equipment includes the battery pack and electrical appliance as described in claim 13.

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