Anti-explosion cover body for battery and battery

Abstract

The explosion-proof cover body comprises a cover body and an explosion-proof assembly, the explosion-proof assembly comprises a mounting seat and an explosion-proof plate, the mounting seat is mounted on the cover body, the mounting seat is provided with a vent hole penetrating up and down, the vent hole comprises a first hole section and a second hole section, the second hole section is located below the first hole section, and the explosion-proof plate is located below the first hole section. The hole diameter of the second hole section is smaller than that of the first hole section, a communicating groove is formed in the hole wall of the first hole section and extends in the vertical direction, and the anti-explosion plate is installed in the first hole section in a sliding mode and covers the top end of the second hole section; when air flow enters the second hole section from the bottom end of the second hole section, the anti-explosion plate can be jacked by the air flow to be higher than the bottom end of the communicating groove, so that the top end of the first hole section communicates with the second hole section through the communicating groove. The explosion-proof cover body for the battery and the battery disclosed by the utility model not only have a better explosion-proof effect, but also can reduce the influence of external dust entering the battery on components in the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an explosion-proof cover for a battery and a battery. Background Technology

[0002] Batteries produce gas during prolonged use (e.g., frequent overcharging). Excessive gas can lead to high internal pressure, especially in hot weather, which can easily cause the battery to explode. Related technologies incorporate vents in the battery cover for ventilation; however, these vents also allow external dust to easily enter the battery and damage its internal components. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an explosion-proof cover for batteries, which not only has a better explosion-proof effect but also reduces the amount of external dust entering the battery and affecting its internal components.

[0004] This utility model also proposes a battery having the above-mentioned explosion-proof cover for batteries.

[0005] According to a first aspect of the present invention, a battery explosion-proof cover includes a cover body and an explosion-proof component. The explosion-proof component includes a mounting base and an explosion-proof plate. The mounting base is installed on the cover body and has a through-hole. The through-hole includes a first segment and a second segment. The second segment is located below the first segment and has a smaller diameter than the first segment. The wall of the first segment has a connecting groove that extends vertically. The explosion-proof plate is slidably installed in the first segment and covers the top of the second segment. When airflow enters the second segment from the bottom, the explosion-proof plate can be lifted by the airflow to a position higher than the bottom of the connecting groove, so that the top of the first segment communicates with the second segment through the connecting groove.

[0006] The explosion-proof cover for batteries according to the embodiments of this utility model has at least the following beneficial effects:

[0007] Under normal circumstances, the explosion-proof plate covers the top of the second section, thus preventing external dust from entering the battery through the vent and affecting its internal components. When the air pressure inside the battery is high, the high-pressure airflow enters the second section from the bottom. The explosion-proof plate slides upwards due to the impact of the high-pressure airflow. When the explosion-proof plate is lifted by the airflow to a position higher than the bottom of the connecting groove, the top of the first section connects to the second section through the connecting groove, facilitating the rapid discharge of high-pressure airflow and preventing the battery from exploding. The explosion-proof cover for batteries according to this embodiment not only has a better explosion-proof effect but also reduces the amount of external dust entering the battery and affecting its internal components.

[0008] According to some embodiments of the present invention, the explosion-proof component further includes:

[0009] An elastic element is connected to the hole wall of the first hole segment and elastically abuts against the upper end face of the explosion-proof plate.

[0010] According to some embodiments of the present invention, the elastic element includes:

[0011] A connecting part is connected to the wall of the first hole section;

[0012] An elastic sheet is connected to the connecting portion, and the elastic sheet extends from top to bottom along the axis close to the first hole segment.

[0013] According to some embodiments of the present invention, the elastic element is provided in multiple ways and arranged circumferentially along the first hole segment, and the connecting groove is provided in multiple ways and arranged circumferentially along the first hole segment.

[0014] According to some embodiments of the present invention, the elastic element and the communicating groove are arranged in a staggered manner along the circumference of the first hole segment.

[0015] According to some embodiments of this utility model, the cover body is provided with a through mounting hole, and the mounting base includes:

[0016] The mounting part includes a mounting ring and a convex ring. The mounting ring is mounted on the upper end of the cover body by fasteners. The mounting ring has a threaded hole. The convex ring is located at the bottom end of the mounting ring and is inserted into the mounting hole. A second hole section is located on the convex ring. The diameter of the threaded hole is larger than the diameter of the second hole section.

[0017] A stud is threaded into the threaded hole, and the first hole section is provided in the stud.

[0018] According to some embodiments of the present invention, the top end of the stud protrudes beyond the top end of the mounting ring.

[0019] According to some embodiments of the present invention, the outer end of the bottom surface of the convex ring is flush with the bottom surface of the cover body, and the bottom surface of the convex ring extends upward at an angle from the outside to the inside.

[0020] According to some embodiments of the present invention, a sealing ring is held between the bottom surface of the mounting ring and the top surface of the cover body.

[0021] The battery according to a second aspect of the present invention includes the explosion-proof cover for the battery described in the first aspect of the present invention.

[0022] The battery according to the embodiments of the present invention has at least the following beneficial effects:

[0023] The explosion-proof cover for batteries using the first aspect of this utility model not only has a better explosion-proof effect, but also reduces the impact of external dust on the internal components of the battery.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof cover for batteries according to this utility model;

[0027] Figure 2 for Figure 1 A sectional view;

[0028] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0029] Figure 4 for Figure 3 This is a diagram showing the explosion-proof plate in another position.

[0030] Icon labels:

[0031] Cover body 100; mounting hole 101;

[0032] Explosion-proof component 200; mounting base 201; explosion-proof plate 202; vent hole 203; first hole section 204; second hole section 205; connecting groove 206; elastic element 207; connecting part 208; elastic sheet 209; mounting part 210; mounting ring 211; convex ring 212; fastener 213; threaded hole 214; stud 215; sealing ring 216. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] The following is for reference. Figures 1 to 4 This invention describes an explosion-proof cover for a battery and a battery according to embodiments of the present invention.

[0038] like Figure 1 and Figure 4 As shown, the explosion-proof cover for a battery according to the first aspect of the present invention includes a cover body 100 and an explosion-proof component 200.

[0039] The cover body 100 is used to install on the top of the battery casing. For example, it can be installed on the battery casing by bolts, or one end of the cover body 100 can be hinged to the top of the battery casing, and the other end can be snapped into the top of the battery casing. By opening the cover body 100, the battery cells and other components inside the battery can be inspected, repaired, and replaced.

[0040] The explosion-proof component 200 includes a mounting base 201 and an explosion-proof plate 202. The mounting base 201 is installed on the cover body 100, for example, it can be connected to the cover body 100 by a fastener 213, or it can be snapped onto the cover body 100. The mounting base 201 is provided with a through-hole 203, which includes a first hole segment 204 and a second hole segment 205. The first hole segment 204 and the second hole segment 205 can be coaxially arranged. The second hole segment 205 is located below the first hole segment 204, and the diameter of the second hole segment 205 is smaller than that of the first hole segment 204. When the cover body 100 is installed on the top of the battery casing, the top of the first hole segment 204 communicates with the outside, and the bottom of the second hole segment 205 communicates with the inner cavity of the battery. The hole wall of the first hole segment 204 is provided with a connecting groove 206, which extends vertically. The explosion-proof plate 202 is slidably installed in the first hole segment 204 and covers the top of the second hole segment 205. When the explosion-proof plate 202 covers the top of the second hole segment 205, the bottom of the connecting groove 206 can be higher than the top of the explosion-proof plate 202 or located outside the explosion-proof plate 202.

[0041] When the airflow enters the second hole section 205 from the bottom end of the second hole section 205, the explosion-proof plate 202 is impacted by the high-pressure airflow and slides upward. The explosion-proof plate 202 can be lifted by the airflow to a position higher than the bottom end of the connecting groove 206, so that the top end of the first hole section 204 can be connected to the second hole section 205 through the connecting groove 206.

[0042] In this invention, under normal circumstances, the explosion-proof plate 202 covers the top of the second hole section 205, thereby preventing external dust from entering the battery through the vent 203 and affecting the internal components. When the air pressure inside the battery is high, the high-pressure airflow enters the second hole section 205 from the bottom. The explosion-proof plate 202 slides upward under the impact of the high-pressure airflow. When the explosion-proof plate 202 is lifted by the airflow to a position higher than the bottom of the connecting groove 206, the top of the first hole section 204 connects to the second hole section 205 through the connecting groove 206, facilitating the rapid discharge of high-pressure airflow and preventing the battery from exploding. The explosion-proof cover for batteries according to this embodiment not only has a better explosion-proof effect but also reduces the amount of external dust entering the battery and affecting its internal components.

[0043] In some embodiments of this utility model, such as Figure 3 and Figure 4As shown, the explosion-proof component 200 also includes an elastic element 207, which is connected to the wall of the first hole segment 204. For example, the elastic element 207 can be integrally formed with the wall of the first hole segment 204, welded, or connected by screws. The elastic element 207 elastically abuts against the upper end face of the explosion-proof plate 202. In this invention, under normal circumstances, the elastic element 207 elastically abuts against the upper end face of the explosion-proof plate 202, so that the explosion-proof plate 202 can tightly cover the top of the second hole segment 205, resulting in a better sealing effect. Moreover, when the battery is installed in the vehicle, it can prevent the explosion-proof plate 202 from shaking up and down randomly and generating noise during vehicle operation. When the high-pressure airflow inside the battery enters the second hole segment 205 from the bottom end and impacts the explosion-proof plate 202, the elastic element 207 elastically deforms, allowing the explosion-proof plate 202 to slide upward and release its cover over the second hole segment 205.

[0044] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the elastic element 207 includes a connecting portion 208 and an elastic sheet 209. The connecting portion 208 is connected to the wall of the first hole segment 204. For example, the connecting portion 208 can be integrally formed with the wall of the first hole segment 204, welded, or connected by screws. The elastic sheet 209 is connected to the connecting portion 208. For example, the elastic sheet 209 can be integrally formed with the connecting portion 208 or welded. The elastic sheet 209 extends from top to bottom along the axis close to the first hole segment 204. This arrangement not only improves the elastic contact effect of the explosion-proof plate 202, thus improving the sealing performance of the explosion-proof plate 202, but also makes it easier for the elastic sheet 209 to deform elastically when the high-pressure airflow inside the battery enters the second hole segment 205 from the bottom end and impacts the explosion-proof plate 202, thus facilitating air permeability and improving the explosion-proof effect.

[0045] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, multiple elastic elements 207 are arranged circumferentially along the first hole segment 204, and multiple connecting grooves 206 are arranged circumferentially along the first hole segment 204. The multiple elastic elements 207 not only provide better elastic contact with the explosion-proof plate 202, but also prevent the explosion-proof plate 202 from flipping during sliding. The multiple connecting grooves 206 allow for faster airflow, resulting in better air permeability and explosion-proof performance.

[0046] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the elastic element 207 and the connecting groove 206 are arranged in a staggered manner along the circumference of the first hole segment 204. This arrangement can prevent the elastic element 207 from affecting the air permeability of the connecting groove 206.

[0047] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the cover body 100 is provided with a through mounting hole 101. The mounting base 201 includes a mounting part 210 and a stud 215. The mounting part 210 includes a mounting ring 211 and a convex ring 212. The mounting ring 211 is mounted on the upper end of the cover body 100 by a fastener 213. The mounting ring 211 forms a threaded hole 214. The convex ring 212 is located at the bottom end of the mounting ring 211 and is inserted into the mounting hole 101. A second hole section 205 is located on the convex ring 212. The diameter of the threaded hole 214 is larger than the diameter of the second hole section 205. The stud 215 is threadedly connected to the threaded hole 214. A first hole section 204 is located on the stud 215.

[0048] In this embodiment, during assembly, the protruding ring 212 is inserted into the mounting hole 101 of the cover body 100, and the mounting ring 211 is connected to the cover body 100 by fasteners 213. Then, the explosion-proof plate 202 is placed in the first hole section 204 of the stud 215, and the stud 215 is threaded into the threaded hole 214 of the mounting ring 211. The assembly is simple and convenient, which makes it easier to clean, maintain and replace.

[0049] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the top of the stud 215 protrudes beyond the top of the mounting ring 211. This design facilitates the rotation of the stud 215, thereby facilitating its installation and removal.

[0050] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the outer end of the bottom surface of the convex ring 212 is flush with the bottom surface of the cover body 100, and the bottom surface of the convex ring 212 extends upward from the outside to the inside. With this configuration, the bottom surface of the convex ring 212 can guide the high-pressure gas inside the battery, making it easier for the high-pressure gas inside the battery to quickly enter the second hole section 205 of the convex ring 212.

[0051] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, a sealing ring 216 is held between the bottom surface of the mounting ring 211 and the top surface of the cover body 100. The sealing ring 216 reduces the amount of external water and dust that can enter the battery through the gap between the bottom surface of the mounting ring 211 and the top surface of the cover body 100.

[0052] The battery according to the second aspect of the present invention includes the explosion-proof cover for the battery described in the first aspect of the present invention.

[0053] According to the battery of this utility model embodiment, by adopting the explosion-proof cover for the battery of the first aspect embodiment of this utility model, under normal circumstances, the explosion-proof plate 202 covers the top of the second hole section 205, thereby preventing external dust from entering the battery through the vent 203 and affecting the components inside the battery. When the air pressure inside the battery is high, the high-pressure airflow inside the battery will enter the second hole section 205 from the bottom end of the second hole section 205. The explosion-proof plate 202 is pushed upward by the impact force of the high-pressure airflow. When the explosion-proof plate 202 is lifted by the airflow to a position higher than the bottom end of the connecting groove 206, the top end of the first hole section 204 is connected to the second hole section 205 through the connecting groove 206, thereby facilitating the rapid discharge of high-pressure airflow and preventing the battery from exploding.

[0054] It should be noted that since the battery can adopt all the technical solutions of the explosion-proof cover for the battery in the first aspect embodiment described above, it has at least all the beneficial effects brought about by the technical solutions in the first aspect embodiment described above. These additional beneficial effects will not be elaborated here.

[0055] It is understood that other components and operations of the battery according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A battery explosion-proof cover, characterized in that, include: Cover the body; An explosion-proof component includes a mounting base and an explosion-proof plate. The mounting base is installed on the cover body. The mounting base has a through-hole. The through-hole includes a first section and a second section. The second section is located below the first section. The diameter of the second section is smaller than that of the first section. The wall of the first section has a connecting groove that extends vertically. The explosion-proof plate is slidably installed in the first section and covers the top of the second section. When airflow enters the second hole section from the bottom end, the explosion-proof plate can be lifted by the airflow to a position higher than the bottom end of the connecting groove, so that the top end of the first hole section can communicate with the second hole section through the connecting groove.

2. The explosion-proof cover for batteries according to claim 1, characterized in that, The explosion-proof component also includes: An elastic element is connected to the hole wall of the first hole segment and elastically abuts against the upper end face of the explosion-proof plate.

3. The explosion-proof cover for batteries according to claim 2, characterized in that, The elastic element includes: A connecting part is connected to the wall of the first hole section; An elastic sheet is connected to the connecting portion, and the elastic sheet extends from top to bottom along the axis close to the first hole segment.

4. The explosion-proof cover for batteries according to claim 2, characterized in that, The elastic element is provided in multiple ways and arranged circumferentially along the first hole segment, and the connecting groove is provided in multiple ways and arranged circumferentially along the first hole segment.

5. The explosion-proof cover for a battery according to claim 4, characterized in that, The elastic element and the communicating groove are arranged in a staggered manner along the circumference of the first hole segment.

6. The explosion-proof cover for a battery according to claim 1, characterized in that, The cover body has a through mounting hole running vertically, and the mounting base includes: The mounting part includes a mounting ring and a convex ring. The mounting ring is mounted on the upper end of the cover body by fasteners. The mounting ring has a threaded hole. The convex ring is located at the bottom end of the mounting ring and is inserted into the mounting hole. The second hole section is located on the convex ring. The diameter of the threaded hole is larger than the diameter of the second hole section. A stud is threaded into the threaded hole, and the first hole section is provided in the stud.

7. The explosion-proof cover for a battery according to claim 6, characterized in that, The top of the stud protrudes beyond the top of the mounting ring.

8. The explosion-proof cover for a battery according to claim 6, characterized in that, The outer end of the bottom surface of the convex ring is flush with the bottom surface of the cover body, and the bottom surface of the convex ring extends upward from the outside to the inside.

9. The explosion-proof cover for a battery according to claim 6, characterized in that, A sealing ring is held between the bottom surface of the mounting ring and the top surface of the cover body.

10. A battery, characterized in that, Includes the explosion-proof cover for batteries as described in any one of claims 1 to 9.

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