Active early warning explosion-proof cover body, battery and electric two-wheeled vehicle

Abstract

According to the active early-warning anti-explosion cover body, the battery and the electric two-wheeled vehicle, under the condition that the air pressure in the battery is high, the air pressure detection unit detects that the air pressure in the battery shell is increased, and therefore active early warning can be conducted when the air pressure in the shell is too high so as to remind a rider to find danger as early as possible and stop the rider away in time; meanwhile, high-pressure air flow in the battery can enter the second hole section from the bottom end of the second hole section, the explosion-proof plate slides upwards under the impact force of the high-pressure air flow, and when the explosion-proof plate is jacked to be higher than the bottom end of the communicating groove by the air flow, the top end of the first hole section is communicated with the second hole section through the communicating groove; therefore, high-pressure air flow can be conveniently and quickly discharged, battery explosion is avoided, and the possibility of injury to a rider can be further reduced.

Description

Technical Field

[0001] This application relates to the field of two-wheeled vehicles, and in particular to an active warning explosion-proof cover, a battery, and an electric two-wheeled vehicle. Background Technology

[0002] When a battery cell experiences an internal short circuit, thermal runaway, or other abnormal conditions, the air pressure inside the battery casing can rise sharply. If the air pressure exceeds the casing's tolerance limit, it can cause the casing to rupture or even explode, posing a serious threat to equipment and personal safety. Therefore, how to solve the problem of air pressure rise induced by abnormal battery cell conditions has become an unavoidable issue in the current battery technology field. Utility Model Content

[0003] This application aims to propose an active early warning explosion-proof cover, battery, and electric two-wheeler that can achieve good explosion-proof effect.

[0004] The active early warning explosion-proof cover provided in the first aspect embodiment of this application includes:

[0005] Cover the body;

[0006] 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, which includes a first section and a second section. The second section is located below the first section and has a smaller diameter than 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 the explosion-proof plate can be lifted by airflow within the battery casing to a height above the bottom of the connecting groove, the top of the first section communicates with the second section through the connecting groove.

[0007] The control unit is located inside the battery casing;

[0008] An air pressure detection unit is electrically connected to the control unit and is disposed inside the battery casing to detect the air pressure inside the battery casing.

[0009] The battery provided in the second aspect of this application includes the active warning explosion-proof cover described in the first aspect of the application.

[0010] The electric two-wheeled vehicle provided in the third aspect of this application includes the battery described in the second aspect of the above-described embodiment.

[0011] The active warning explosion-proof cover, battery, and electric two-wheeler of this application embodiment have the following features: When the air pressure inside the battery is high, the air pressure detection unit detects that the air pressure inside the battery casing will increase. This allows for an active warning when the air pressure inside the casing is too high, reminding the rider to detect the danger as early as possible, stop in time, and move away to avoid personal injury. At the same time, the high-pressure airflow inside the battery can enter the second hole section from the bottom end. The explosion-proof plate slides upward under the impact of the high-pressure airflow. When the explosion-proof plate is lifted by the airflow to a height higher than the bottom end of the connecting groove, the top end of the first hole section connects to the second hole section through the connecting groove, thereby facilitating the rapid discharge of high-pressure airflow, preventing the battery from exploding, and further reducing the possibility of injury to the rider.

[0012] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is an electrical system diagram of the active warning explosion-proof cover according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the overall structure of the active early warning explosion-proof cover according to an embodiment of this application;

[0016] Figure 3 for Figure 2 A sectional view;

[0017] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0018] Figure 5 for Figure 4 This is a diagram showing the explosion-proof plate in another position.

[0019] Cover body 100; mounting hole 101;

[0020] 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;

[0021] Control unit 301; air pressure detection unit 302; component depressurization detection unit 303; temperature sensor 304; alarm module 305. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of the 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 application, and should not be construed as limiting this application.

[0023] In the description of this application, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0024] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, it should be noted that, unless otherwise explicitly defined, terms such as "setup," "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 application in conjunction with the specific content of the technical solution.

[0026] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this application, not all embodiments.

[0027] The following is for reference. Figures 1 to 5 This application describes an active warning explosion-proof cover, a battery, and an electric two-wheeler according to embodiments thereof.

[0028] like Figures 1 to 5 As shown in the figure, the active early warning explosion-proof cover of this application embodiment includes:

[0029] Cover body 100;

[0030] 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. The mounting base 201 is provided with a vertically penetrating vent 203, which includes a first segment 204 and a second segment 205. The second segment 205 is located below the first segment 204, and its diameter is smaller than that of the first segment 204. The wall of the first segment 204 is provided with a connecting groove 206, which extends vertically. The explosion-proof plate 202 is slidably installed in the first segment 204 and covers the top of the second segment 205. When the explosion-proof plate 202 covers the top of the second 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. When the explosion-proof plate 202 can be lifted by the airflow inside the battery casing to a height higher than the bottom of the connecting groove 206, the top of the first segment 204 is connected to the second segment 205 through the connecting groove 206.

[0031] Control unit 301 is located inside the battery casing;

[0032] The air pressure detection unit 302 is electrically connected to the control unit 301 and is installed inside the battery casing to detect the air pressure inside the battery casing.

[0033] In this embodiment, when the air pressure inside the battery is high, the air pressure detection unit 302 detects that the air pressure inside the battery casing will increase. This allows for proactive warnings when the air pressure inside the casing is too high, reminding the rider to detect the danger as early as possible, stop and move away in time, and avoid personal injury. At the same time, the high-pressure airflow inside the battery can enter the second hole section 205 from the bottom end. 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 end of the connecting groove 206, the top end of the first hole section 204 connects to the second hole section 205 through the connecting groove 206, thereby facilitating the rapid discharge of high-pressure airflow, preventing the battery from exploding, and further reducing the possibility of injury to the rider.

[0034] There are several ways to mount the cover body 100 on the top of the battery casing. For example, it can be bolted to the battery casing, 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.

[0035] Under normal circumstances, the explosion-proof plate 202 can cover the top of the second hole section 205, thereby preventing external dust and rainwater from entering the battery through the vent hole 203 and affecting the components inside the battery.

[0036] The aforementioned control unit 301 can directly use the core controller of the battery management system, or it can use a separate controller. The specific usage method can be selected based on actual control needs, cost and other factors.

[0037] The aforementioned air pressure detection unit 302 can be installed in any area within the housing. The control unit 301 acquires the air pressure data collected by the air pressure detection unit 302 within the housing, thereby determining whether the air pressure is abnormal and triggering an alarm. For example, an alarm can be triggered if the air pressure exceeds a preset safe air pressure threshold. Multiple alarm methods are available. For instance, an independent alarm module 305 can be set up, controlled by the control unit 301 to trigger the alarm. When the control unit 301 is connected to a wireless communication module, an alarm can also be triggered by pushing a message to the rider's smart terminal.

[0038] The aforementioned air pressure detection unit 302 can be installed in any area within the housing that communicates with the vent 203. This allows for both pressure detection within the housing and determination of the pressure relief status of the explosion-proof plate 202 by detecting pressure changes. For example, if an increase in air pressure occurs within the battery housing, an alarm can be triggered. If, after the pressure rises to a certain level, the explosion-proof plate 202 releases pressure, and the pressure within the housing drops rapidly without continuing to rise, it indicates that the battery malfunction is not serious or that the increase may be due to a short-term temperature rise caused by weather conditions. If the air pressure exceeds the safe air pressure threshold and continues to rise without decreasing due to the pressure relief from the explosion-proof plate 202, it indicates a very high risk of explosion. Different levels of warning can be issued for different levels of urgency, allowing riders to take appropriate preventative measures.

[0039] The aforementioned air pressure detection unit 302 can directly use commonly available pressure detection sensors.

[0040] In some implementations, such as Figure 1 As shown, the active warning explosion-proof enclosure also includes:

[0041] The component pressure relief detection unit 303 is electrically connected to the control unit 301 and is used to detect the movement of the explosion-proof plate 202 along the axial direction of the vent hole 203.

[0042] In this embodiment, the component pressure relief detection unit 303 is used to detect the movement of the explosion-proof plate 202 along the axial direction of the vent 203, thereby determining whether the explosion-proof plate 202 has been activated. On the one hand, an alarm can be triggered in time when the explosion-proof plate 202 is activated. On the other hand, the control unit 301 can also trigger an alarm based on the air pressure data detected by the air pressure detection unit 302. If the air pressure continues to rise but the explosion-proof plate 202 still does not activate, the alarm level can be increased to remind the rider that the current risk of explosion is extremely high.

[0043] In some embodiments, the component pressure relief detection unit 303 includes:

[0044] A plate-type pressure sensor is disposed at the bottom of the first hole section 204 and located between the bottom of the first hole section 204 and the explosion-proof plate 202; the plate-type pressure sensor is electrically connected to the control unit 301 and is used to detect the pressure between the bottom of the first hole section 204 and the explosion-proof plate 202.

[0045] In this embodiment, a plate pressure sensor is used to detect the pressure between the bottom of the first hole section 204 and the explosion-proof plate 202 to determine whether the explosion-proof plate 202 has started to depressurize. The detection method is simple, accurate and extremely low cost.

[0046] Specifically, when the explosion-proof plate 202 is not depressurized, it will compress the bottom of the first hole section 204. The plate pressure sensor can detect this compressive force to determine that the explosion-proof plate 202 has not been moved by the airflow. When the explosion-proof plate 202 is depressurized, it will separate from the bottom of the first hole section 204 and no longer compress the bottom of the first hole section 204. At this time, the plate pressure sensor cannot detect the compressive force, thus determining that the explosion-proof plate 202 has been opened by the airflow and has begun to depressurize.

[0047] In some embodiments, a separator plate is horizontally disposed inside the battery casing, and the cell module is disposed below the separator plate;

[0048] The component pressure relief detection unit 303 includes:

[0049] The component displacement detection sensor, electrically connected to the control unit 301, is installed on the top of the isolation plate and directly opposite the explosion-proof plate 202, and is used to detect the vertical movement distance of the explosion-proof plate 202.

[0050] In this embodiment, a component displacement detection sensor is used to directly detect the movement distance of the explosion-proof plate 202 to determine whether the explosion-proof plate 202 has started to depressurize, which is a more direct detection method.

[0051] It should be noted that there are many ways to detect whether the explosion-proof panel 202 has performed a pressure relief action, and it is not limited to the aforementioned methods.

[0052] In addition, in some scenarios, the explosion-proof plate 202 may cause the internal air pressure of the battery casing to rise slowly, resulting in repeated opening and closing. Therefore, if the explosion-proof plate 202 depressurizes multiple times within a certain time range, an alarm should be triggered to remind the rider to conduct a risk assessment in a timely manner.

[0053] The displacement detection sensor of the above components can directly adopt ranging devices that can perform distance measurement, such as infrared ranging modules, visible light ranging modules, and ultrasonic ranging modules.

[0054] In some implementations, reference Figure 1 The active warning explosion-proof enclosure also includes:

[0055] Temperature sensor 304 is electrically connected to control unit 301 and is located inside battery casing to detect the temperature inside battery casing.

[0056] In this embodiment, in many scenarios, temperature changes precede air pressure changes. Especially when only a few battery cells fail and the combustion is smoldering, the air pressure usually does not rise quickly. However, by using the temperature sensor 304 to detect the temperature inside the casing, overheating can be detected in advance, thus providing an early warning. This allows for maintenance of only some battery cells in certain scenarios without replacing the entire battery. In other words, while achieving explosion-proof warning, the operating cost is effectively reduced.

[0057] In some implementations, reference Figure 1 The active warning explosion-proof enclosure also includes:

[0058] The alarm module 305 is electrically connected to the control unit 301.

[0059] The alarm module 305 mentioned above can sound an alarm independently, so that riders can be aware of the risks as early as possible and avoid dangerous situations.

[0060] The alarm module 305 can directly adopt an audible and visual alarm device. The audible and visual alarm device can be directly electrically connected to the control unit 301, or an audible and visual alarm device with Bluetooth connection can be used to connect to the control unit 301 via Bluetooth.

[0061] In some implementations, such as Figure 4 and Figure 5 As 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.

[0062] In some implementations, such as Figure 4 and Figure 5 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.

[0063] In some implementations, such as Figure 4 and Figure 5 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.

[0064] In some implementations, such as Figure 4 and Figure 5 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.

[0065] In some implementations, such as Figure 4 and Figure 5 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.

[0066] In this embodiment, during assembly, the protruding ring 212 is inserted into the mounting hole 101 of the cover body 100, the mounting ring 211 is connected to the cover body 100 by fasteners 213, 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.

[0067] In some implementations, such as Figure 4 and Figure 5 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.

[0068] In some implementations, such as Figure 4 and Figure 5 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.

[0069] In some implementations, such as Figure 4 and Figure 5 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.

[0070] This application also provides a battery that includes the aforementioned active warning explosion-proof cover.

[0071] It should be noted that since the battery can adopt all the technical solutions of the above-mentioned active warning explosion-proof cover, it has at least all the beneficial effects brought by the above-mentioned active warning explosion-proof cover technical solutions. These additional beneficial effects will not be elaborated here.

[0072] This application also provides an electric two-wheeled vehicle, which includes the battery described above.

[0073] It should be noted that since electric two-wheeled vehicles can adopt all the above-mentioned battery technologies, they have at least all the beneficial effects brought about by the above-mentioned battery technologies. These additional beneficial effects will not be elaborated here.

[0074] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0075] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. An active early warning 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, which includes a first section and a second section. The second section is located below the first section and has a smaller diameter than 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 the explosion-proof plate can be lifted by airflow within the battery casing to a height above the bottom of the connecting groove, the top of the first section communicates with the second section through the connecting groove. The control unit is located inside the battery casing; An air pressure detection unit is electrically connected to the control unit and is disposed inside the battery casing to detect the air pressure inside the battery casing.

2. The active early warning explosion-proof cover according to claim 1, characterized in that, The active early warning explosion-proof cover also includes: The component pressure relief detection unit is electrically connected to the control unit and is used to detect the movement of the explosion-proof plate along the axial direction of the vent hole.

3. The active early warning explosion-proof cover according to claim 2, characterized in that, The component pressure relief detection unit includes: A plate-type pressure sensor is disposed at the bottom of the first orifice section and located between the bottom of the first orifice section and the explosion-proof plate; the plate-type pressure sensor is electrically connected to the control unit and is used to detect the pressure between the bottom of the first orifice section and the explosion-proof plate.

4. The active early warning explosion-proof cover according to claim 2, characterized in that, A horizontally arranged isolation plate is provided inside the battery casing, and the cell module is arranged below the isolation plate. The component pressure relief detection unit includes: A component displacement detection sensor, electrically connected to the control unit, is installed on the top of the isolation plate and directly opposite the explosion-proof plate, and is used to detect the vertical movement distance of the explosion-proof plate.

5. The active early warning explosion-proof cover according to claim 1, characterized in that, The active early warning explosion-proof cover also includes: A temperature sensor, electrically connected to the control unit and disposed inside the battery casing, is used to detect the temperature inside the battery casing.

6. The active early warning explosion-proof cover according to claim 1, characterized in that, The active early warning explosion-proof cover also includes: The alarm module is electrically connected to the control unit.

7. The active early warning explosion-proof cover 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.

8. The active early warning explosion-proof cover according to claim 7, 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.

9. A battery, characterized in that, Includes the active warning explosion-proof cover as described in any one of claims 1 to 8.

10. An electric two-wheeled vehicle, characterized in that, Includes the battery as described in claim 9.

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