Battery sealing structure, battery and automobile

Abstract

The invention relates to the technical field of batteries, and provides a battery sealing structure, a battery and an automobile, the battery sealing structure comprises: a first shell, the first shell comprises a first body and a first sealing side edge arranged on the peripheral side of the first body, the first sealing side edge comprises a first flanging and a second flanging which are sequentially connected in a bending manner; the second shell comprises a second body and a second sealing side edge arranged on the peripheral side of the second body, the second sealing side edge comprises a third turnup and a fourth turnup which are sequentially connected in a bent mode, the first turnup and the third turnup are oppositely arranged, and the second turnup and the fourth turnup are oppositely arranged; and the sealing elements are respectively arranged between the first flanging and the third flanging and between the second flanging and the fourth flanging, and are used for connecting the first shell and the second shell in a sealing manner. The battery sealing structure, the battery and the automobile provided by the invention aim to solve the problems of poor sealing effect and easy sealing failure of a battery shell in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery sealing structure, a battery and a car. Background Art

[0002] With the expansion of my country's new energy market, electric vehicles are becoming increasingly popular. Electric vehicles rely on battery packs for power. However, traditional battery pack sealing methods often use a single seal directly on the housing. This loose seal can easily lead to water ingress and seal failure, especially in the event of an impact. Summary of the Invention

[0003] The present invention provides a battery sealing structure, a battery and a car, aiming to solve the problems of poor sealing effect and easy sealing failure of battery shells in traditional technologies.

[0004] In view of the problems existing in the prior art, an embodiment of the present invention provides a battery sealing structure, comprising: The first housing comprises a first body and a first sealing side edge provided on a circumferential side of the first body, wherein the first sealing side edge comprises a first flange and a second flange edge which are bent and connected in sequence; The second housing includes a second body and a second sealing side edge provided on a circumferential side of the second body, the second sealing side edge includes a third flange and a fourth flange edge that are bent and connected in sequence, the first flange edge is disposed opposite to the third flange edge, and the second flange edge is disposed opposite to the fourth flange edge; and The sealing members are respectively arranged between the first flange and the third flange, and between the second flange and the fourth flange, and are used for sealingly connecting the first shell and the second shell.

[0005] According to a battery sealing structure provided by the present invention, the first flange is parallel to and fits with the third flange, and the second flange is parallel to and fits with the fourth flange.

[0006] According to a battery sealing structure provided by the present invention, the first body includes a first side wall, the first flange is obliquely connected to the first side wall, and the angle between the first flange and the first side wall is an acute angle.

[0007] According to a battery sealing structure provided by the present invention, the second flange is horizontally connected to the first flange.

[0008] According to a battery sealing structure provided by the present invention, the angle between the first flange and the second flange is 125°-145°.

[0009] According to a battery sealing structure provided by the present invention, a mounting groove is provided on the inner side of the first flange or the third flange, and the sealing member is disposed in the mounting groove.

[0010] According to a battery sealing structure provided by the present invention, the sealing member includes a sealing ring; and / or the sealing member includes a plurality of sealing strips arranged at intervals.

[0011] According to a battery sealing structure provided by the present invention, a plurality of sealing members are provided between the first flange and the third flange, and between the second flange and the fourth flange, and the sealing members are distributed at intervals.

[0012] The present invention further provides a battery, comprising the battery sealing structure as described in any one of the above items, wherein a battery core is provided in the battery sealing structure.

[0013] The present invention also provides a car comprising the battery as described above.

[0014] The battery sealing structure provided by the present invention comprises a first flange, a second flange, and a third flange, connected by a folded connection, and seals disposed between the first and third flanges, and between the second and fourth flanges. This increases the number of seals provided, ensuring that even if one seal fails, a second seal still provides protection. Furthermore, the angled connection of the two flanges prevents impact on one flange from affecting the other, thus providing a good sealing connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the battery sealing structure provided by the present invention.

[0017] Figure numerals: 1. first shell; 11. first body; 111. first side wall; 12. first sealing side edge; 121. first flange; 122. second flange; 2. second shell; 21. second body; 211. second side wall; 22. second sealing side edge; 221. third flange; 2211. mounting groove; 222. fourth flange; 3. sealing member. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0023] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0024] The following combination Figure 1 The battery sealing structure, battery and automobile provided by the present invention are described.

[0025] In view of the problems of poor sealing effect and easy sealing failure in traditional technologies, please refer to Figure 1 An embodiment of the present invention provides a battery sealing structure, including a first shell 1, a second shell 2 and a sealing member 3.

[0026] The first shell 1 includes a first body 11 and a first sealing side 12 provided on the circumference of the first body 11. The first sealing side 12 includes a first flange 121 and a second flange 122 that are bent and connected in sequence. The second shell 2 includes a second body 21 and a second sealing side 22 provided on the circumference of the second body 21. The second sealing side 22 includes a third flange 221 and a fourth flange 222 that are bent and connected in sequence. The first body 11 and the second body 21 can be configured into any shape, such as a rectangular parallelepiped, a cube, or a cylinder, etc., and the present invention is not limited to this. The first flange 121 and the third flange 221 are arranged opposite to each other, and the second flange 122 and the fourth flange 222 are arranged opposite to each other. The sealing member 3 is provided between the first flange 121 and the third flange 221, and between the second flange 122 and the fourth flange 222, for sealingly connecting the first shell 1 and the second shell 2.

[0027] It should be noted that in conventional technology, the two shells rely on a single seal for sealing. If the seal is not tight, water can easily enter. In particular, when the two shells are impacted, they will separate, causing the seal to fail. In the technical solution provided by the present invention, a first flange 121 and a second flange 122, a third flange 221 and a fourth flange 222 are provided, and a seal 3 is provided between the first flange 121 and the third flange 221, and between the second flange 122 and the fourth flange 222. On the one hand, the number of seals 3 is greater, so when one layer of sealing fails, there is still a second layer of sealing to provide protection; on the other hand, the two flanges connected at an angle have different extension directions. When subjected to impact forces in the same direction, if one flange is impacted, the other flange is less likely to be impacted. In this way, a good sealing connection effect can always be provided under any circumstances.

[0028] As mentioned above, the first flange 121 and the third flange 221 are arranged relative to each other, and the second flange 122 and the fourth flange 222 are arranged relative to each other, and the flanges arranged relative to each other are connected by the sealing member 3. In an optional embodiment, taking the first flange 121 and the third flange 221 as an example, the first flange 121 and the third flange 221 can be arranged non-parallel, and the cross-sectional shape of the sealing member 3 is changed so that the first flange 121 and the third flange 221 can be fitted and sealed. In another optional embodiment, the first flange 121 and the third flange 221 are parallel and fitted, and the second flange 122 and the fourth flange 222 are parallel and fitted. In this way, it is possible to ensure that the first flange 121 and the third flange 221, and the second flange 122 and the fourth flange 222 are fitted tightly to a greater extent. It should also be noted that the first flange 121, the second flange 122, the third flange 221 and the fourth flange 222 can be set to a plate shape or other forms, such as a wave shape, an arc shape, a chamfered shape or other forms, and the present invention is not limited to this.

[0029] As mentioned above, the present invention sets two flanges on a sealing side to ensure that when one flange is hit, the other flange is not easily hit. On this basis, in order to achieve the effect of a tighter seal of the other flange when one flange is hit. In the technical solution provided by the present invention, the first body 11 includes a first side wall 111, and the first flange 121 is obliquely connected to the first side wall 111, and the angle between the first flange 121 and the first side wall 111 is an acute angle. Figure 1For example, since the second housing 2 is generally facing the ground during use and is easily bumped, the impact force on the battery sealing structure is generally transmitted from the second housing 2 to the first housing 1. When the second housing 2 is subjected to a vertical force, it first impacts the fourth flange 222. The fourth flange 222 tilts upward, causing the seal 3 between the fourth flange 222 and the second flange 122 to fail. The upward tilt of the fourth flange 222 squeezes the third flange 221. The third flange 221 is parallel to the first flange 121 and is arranged in a close contact, which makes the third flange 221 squeeze the first flange 121 and the seal between the first flange 121 more tightly. When the second housing 2 is subjected to a lateral force, the third flange 221 is impacted first. Due to the lateral force, the third flange 221 is pressed against the first flange 121 and the connection between the first flange 121 is more tightly connected. The second flange 122 and the fourth flange 222 are less affected, and the seal 3 between them can still ensure the overall sealing. It should be noted that the first body 11 includes a first side wall 111, and the second body 21 also includes a second side wall 211. In this embodiment, the first side wall 111 and the second side wall 211 extend in a vertical direction. Other extension directions are also possible, and the present invention does not limit this. It should be noted that, Figure 1 The figure shows one side of the battery sealing structure. The first body 11 and the second body 21 can enclose a cavity for accommodating the battery cell. The first side wall 111 and the second side wall 211 correspond to the side walls of the cavity. The shape of the cavity is different, and the extension direction of the first side wall 111 and the second side wall 211 is also different.

[0030] Furthermore, taking the connection between the second flange 122 and the first flange 121 as an example, the second flange 122 is horizontally connected to the first flange 121, and the corresponding fourth flange 222 is also horizontally connected to the third flange 221. In fact, the second flange 122 can also be arranged to have an angle with the horizontal direction, but considering the installation problem, the second flange 122 and the fourth flange 222 extending in the horizontal direction can provide a good installation foundation for the seal 3, and the two are also convenient for cooperating with other structures after being fitted. More importantly, with such an arrangement, most of the impact will be absorbed by the horizontally arranged second flange 122 and the fourth flange 222 and the seal 3 therein, and the first flange 121 and the third flange 221 and the seal 3 therebetween will fit more tightly after the impact, acting as the last line of defense for the shell seal.

[0031] In an optional embodiment, the angle between the first flange 121 and the second flange 122 is 125°-145°, and correspondingly, the angle between the third flange 221 and the fourth flange 222 is also 125°-145°. In the embodiment provided by the present invention, since the first side wall 111 and the second side wall 211 are arranged in a vertical direction, it can be calculated that the angle between the first flange 121 and the first side wall 111 is 35°-55°, and the angle between the third flange 221 and the second side wall 211 is also 35°-55°.

[0032] To facilitate installation of the seal 3, a mounting groove 2211 is provided on the inner side of the first flange 121 or the third flange 221. The seal 3 is disposed in the mounting groove 2211. Sealant may also be provided in the mounting groove 2211 to provide a more stable installation of the seal 3. It should be noted that since the second flange 122 and the fourth flange 222 extend horizontally, they can provide support for the seal 3. Therefore, the mounting groove 2211 is not required on the second flange 122 or the fourth flange 222. Of course, if you want to ensure a more stable installation of the seal 3 and prevent it from being misaligned, you can also provide the mounting groove 2211 on the second flange 122 or the fourth flange 222. This is not a limitation of the present invention.

[0033] The seal 3 can be provided in various forms. In an optional embodiment, the seal 3 includes a sealing ring having a shape similar to that of the first sealing side 12 and the second sealing side 22. In another optional embodiment, the seal 3 may also include multiple sealing strips, which are spaced apart along the extending direction of the first sealing side 12 and the second sealing side 22.

[0034] It should also be noted that, to enhance the sealing effect, multiple sealing members 3 are provided between the first flange 121 and the third flange 221, and between the second flange 122 and the fourth flange 222, with the sealing members 3 spaced apart. In other optional embodiments, a single sealing member 3 may be provided, depending on the size of the first sealing side 12 and the second sealing side 22. When the size is small, only one sealing member 3 may be provided between each pair of flanges; when the size is large, multiple sealing members 3 may be provided between each pair of flanges.

[0035] The present invention further provides a battery comprising the battery sealing structure described above, wherein a battery cell is disposed within the battery sealing structure. Furthermore, the present invention further provides an automobile comprising the battery described above. Since the primary inventive aspect of the present invention lies in the battery sealing structure, the structures of the battery and automobile will not be further described.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery sealing structure, characterized in that: include: The first housing comprises a first body and a first sealing side edge provided on a circumferential side of the first body, wherein the first sealing side edge comprises a first flange and a second flange edge which are bent and connected in sequence; The second housing includes a second body and a second sealing side edge provided on a circumferential side of the second body, the second sealing side edge includes a third flange and a fourth flange edge that are bent and connected in sequence, the first flange edge is disposed opposite to the third flange edge, and the second flange edge is disposed opposite to the fourth flange edge; and The sealing members are respectively arranged between the first flange and the third flange, and between the second flange and the fourth flange, and are used for sealingly connecting the first shell and the second shell.

2. The battery sealing structure according to claim 1, characterized in that: The first flange is parallel to and fits with the third flange, and the second flange is parallel to and fits with the fourth flange.

3. The battery sealing structure according to claim 2, characterized in that: The first body includes a first side wall, the first flange is obliquely connected to the first side wall, and the angle between the first flange and the first side wall is an acute angle.

4. The battery sealing structure according to claim 3, characterized in that: The second flange is horizontally connected to the first flange.

5. The battery sealing structure according to claim 3, characterized in that: The included angle between the first flange and the second flange is 125°-145°.

6. The battery sealing structure according to claim 3, characterized in that: An installation groove is provided on the inner side of the first flange or the third flange, and the sealing component is arranged in the installation groove.

7. The battery sealing structure according to claim 1, characterized in that: The sealing member includes a sealing ring; and / or the sealing member includes a plurality of sealing strips arranged at intervals.

8. The battery sealing structure according to claim 1, characterized in that: A plurality of sealing members are provided between the first flange and the third flange, and between the second flange and the fourth flange, and the sealing members are distributed at intervals.

9. A battery, characterized in that: The battery sealing structure comprises the battery sealing structure according to any one of claims 1 to 8, wherein a battery cell is arranged in the battery sealing structure.

10. An automobile, characterized in that: Comprising the battery of claim 9.

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