Battery and electric two-wheeled vehicle

Abstract

The utility model discloses a battery and electric two-wheeled vehicle, including box body, battery cell module and flame retardant module, box body includes shell and cover body, the cover body has first side and second side, the first side is articulated with shell top end one side, the second side is connected with elastic band, the elastic band is detachably connected with shell, the cover body is equipped with side plate, the side plate is equipped with the battery cell module, the flame retardant module is equipped with the battery cell module, and the battery cell module is equipped with the flame retardant module. The side plates are attached to the outer side face of the shell, the side plate on the second side is provided with a ventilation groove, the side wall of the shell covers the inner side of the ventilation groove, the battery cell module is arranged in the shell, the flame-retardant module comprises an isolation plate and a hot aerosol fire extinguisher, the isolation plate covers the battery cell module and is provided with a flow guide channel, the flow guide channel is provided with a discharging port facing the battery cell module, and the hot aerosol fire extinguisher is arranged in the shell. The hot aerosol fire extinguisher is arranged in the shell and communicates with the flow guide channel. According to the utility model, not only can the explosion-proof effect be effectively improved, but also the battery cell modules can be subjected to flame retardance in a centralized manner, the flame-retardant effect is better, and meanwhile, the influence on other parts caused by the fact that aerosol splashes to the other parts in the battery can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery and an electric two-wheeler. Background Technology

[0002] During the charging and discharging process, the battery cell module produces gas. Excessive gas can cause high internal pressure. In related technologies, vent holes are set on the battery cover for ventilation. However, in order to reduce the impact of external dust and rainwater on the internal components by entering the battery through the vent holes, the diameter of the vent holes is generally set to be small. Thus, when the battery cell module short-circuits and generates a large amount of heat or even catches fire, the electrolyte decomposes instantly and produces a large amount of gas. The small-diameter vent holes cannot allow enough gas to escape, resulting in poor explosion-proof performance.

[0003] In addition, some battery cases are equipped with thermal aerosol fire extinguishers. When the temperature is too high, the thermal aerosol fire extinguisher is activated, generating a large amount of aerosol to absorb heat and reduce the oxygen concentration, thereby retarding the flame. However, during use, it was found that the aerosol generated by the existing battery thermal aerosol fire extinguishers splashes everywhere, thus failing to concentrate the flame retardancy on the battery cell module, resulting in poor flame retardancy. Moreover, the aerosol can splash onto other components inside the battery, affecting them. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery that not only effectively improves the explosion-proof effect, but also centrally flame-retards the battery cell module, resulting in a better flame-retardant effect. Simultaneously, it reduces the impact of aerosol splashing onto other components within the battery.

[0005] This utility model also proposes an electric two-wheeled vehicle with the above-mentioned battery.

[0006] A battery according to a first aspect of the present invention includes a casing, a cell module, and a flame-retardant module. The casing includes a shell and a cover. The top of the shell is open. The cover has a first side and a second side. The first side is hinged to one side of the top of the shell. The second side is connected to an elastic band, the bottom end of which is detachably connected to the other side of the top of the shell. The cover has a side plate that fits against the outer surface of the shell. The side plate on the second side has a vent groove. The side wall of the shell covers the inner side of the vent groove. Alternatively, the side wall of the shell has a vent groove, and the side plate on the second side covers the inner side of the vent groove. Outside the venting groove, the battery cell module is located inside the housing. The flame-retardant module includes an isolation plate and a thermal aerosol fire extinguisher. The isolation plate is located inside the housing and covers the top of the battery cell module. The isolation plate has a flow channel, and the bottom end of the flow channel has an outlet facing the battery cell module. The thermal aerosol fire extinguisher is located inside the housing and communicates with the flow channel. When the bottom surface of the cover is impacted by the airflow inside the housing, the second side can move upward, allowing the inner cavity of the housing to communicate with the external environment through the venting groove. After the thermal aerosol fire extinguisher is activated, it can input aerosol into the flow channel.

[0007] The battery according to the embodiments of the present invention has at least the following beneficial effects:

[0008] When a short circuit occurs in the battery's cell module, generating high temperatures, the thermal aerosol fire extinguisher activates and produces a large amount of aerosol. This aerosol is transported to the guiding channel and then sprayed out through the outlet. Because of the isolation plate covering the top of the cell module, and the outlet facing the cell module, the aerosol sprayed from the outlet is concentrated on the cell module, preventing it from splashing indiscriminately. This concentrates the flame retardancy on the cell module, resulting in better flame retardancy and reducing the risk of aerosol splashing onto other components within the battery. Furthermore, when a short circuit occurs in the battery's cell module, generating high temperatures, the electrolyte decomposes instantly, producing a large amount of gas. This high-pressure gas flow impacts the bottom surface of the cover, causing the elastic band to stretch elastically under the impact, allowing the second side of the cover to move upwards. When the vent is located on the second side panel, it can move to the top of the housing, allowing the internal cavity of the housing to connect with the external environment. When the vent is located on the side wall of the housing, the second side of the cover can move upwards to expose the vent, again allowing the internal cavity of the housing to connect with the external environment and enabling high-pressure airflow inside the housing to be quickly discharged. Normally, the side panel of the cover is attached to the outer surface of the housing, and the vent can be covered by the side wall of the housing or the second side panel. This prevents external dust and rainwater from entering the battery through the vent and affecting the internal components. Therefore, the area of ​​the vent can be set larger, effectively improving the explosion-proof effect.

[0009] According to some embodiments of the present invention, the thermal aerosol fire extinguisher is located at the top of the isolation plate.

[0010] According to some embodiments of the present invention, the isolation plate is provided with heat-conducting holes running vertically through it, the thermal aerosol fire extinguisher is located above the heat-conducting holes and covers the heat-conducting holes, and a temperature sensor is provided at the bottom of the thermal aerosol fire extinguisher.

[0011] According to some embodiments of this utility model, the battery further includes an explosion-proof component, which includes a mounting base and an explosion-proof plate. The mounting base is installed on the cover 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 housing, 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.

[0012] According to some embodiments of the present invention, the explosion-proof component further includes an elastic element, which is connected to the hole wall of the first hole segment and elastically abuts against the upper end face of the explosion-proof plate.

[0013] According to some embodiments of the present invention, the elastic element includes a connecting portion and an elastic sheet. The connecting portion is connected to the hole wall of the first hole segment, and the elastic sheet is connected to the connecting portion. The elastic sheet extends from top to bottom along the axis close to the first hole segment.

[0014] According to some embodiments of this utility model, the cover body is provided with a through mounting hole, the mounting base includes a mounting part and a stud, 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 a fastener, the mounting ring forms 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, the stud is threadedly connected to the threaded hole, and the first hole section is located on the stud.

[0015] 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, and the bottom surface of the convex ring extends upward from the outside to the inside.

[0016] According to some embodiments of the present invention, the top end of the stud protrudes beyond the top end of the mounting ring.

[0017] According to some embodiments of the present invention, a sealing ring is sandwiched between the bottom surface of the mounting ring and the top surface of the cover.

[0018] According to some embodiments of the present invention, the ventilation groove is provided on the side plate on the second side and extends along the length direction of the side plate on the second side, and two elastic bands are provided and are respectively located on both sides of the ventilation groove.

[0019] According to some embodiments of the present invention, the battery cell module includes a plurality of battery cells arranged side by side, and the battery also includes two heat dissipation components. The two heat dissipation components are disposed in the housing and are respectively located on both sides of the width direction of the battery cells. The heat dissipation components include a mounting frame and a plurality of thermally conductive elastic parts. The mounting frame is installed in the housing and extends along the arrangement direction of the plurality of battery cells. The plurality of thermally conductive elastic parts are disposed in the mounting frame and arranged along the extension direction of the mounting frame. The thermally conductive elastic parts are respectively provided with a first abutment part and a second abutment part on both sides of the extension direction of the mounting frame. The first abutment part and the second abutment part of the same thermally conductive elastic part bend downward or upward in a direction away from each other. The plurality of first abutment parts are respectively used to abut the sides of the plurality of battery cells in the width direction, and the plurality of second abutment parts are used to abut the inner sidewall of the housing.

[0020] According to some embodiments of the present invention, a slot is provided on the outer side of the first abutting part, the slot for the side of the battery cell to be inserted in the width direction; and / or, the thermally conductive elastic part is provided with a sleeve hole, and is slidably fitted onto the mounting bracket through the sleeve hole.

[0021] According to some embodiments of the present invention, the flow channel extends along the arrangement direction of the plurality of battery cells, and the flow channel is provided with a plurality of discharge ports along its own length direction.

[0022] According to some embodiments of the present invention, a guide pipe is connected to the top of the isolation plate, and the guide pipe and the isolation plate enclose the guide channel to form the guide channel, and the discharge port is located on the isolation plate.

[0023] According to some embodiments of the present invention, a tab assembly is provided between two adjacent battery cells. The tab assembly includes two mating tabs, which are respectively connected to two adjacent battery cells. Among the three adjacent battery cells, the two tab assemblies connected to the middle battery cell are arranged along the width direction of the battery cell. Two flow channels are provided and are arranged along the width direction of the battery cell.

[0024] According to some embodiments of this utility model, the discharge port corresponds one-to-one with the tab assembly, and the discharge port faces the corresponding tab assembly.

[0025] The electric two-wheeled vehicle according to a second aspect of the present invention includes the battery described in the first aspect of the present invention.

[0026] The electric two-wheeled vehicle according to the embodiments of this utility model has at least the following beneficial effects:

[0027] When a short circuit occurs in the battery cell module of the present invention, generating high temperatures, the thermal aerosol fire extinguisher is activated and generates a large amount of aerosol. The aerosol is transported to the guide channel and then sprayed out through the outlet. Because an isolation plate is provided, covering the top of the cell module, and the outlet faces the cell module, the aerosol sprayed from the outlet is concentrated on the cell module instead of splashing randomly. This concentrates the flame retardancy of the cell module, resulting in a better flame retardant effect, and also reduces the risk of aerosol splashing onto other components inside the battery and affecting them. Furthermore, under normal circumstances, the side plate of the cover is attached to the outer surface of the shell, and the venting groove can be covered by the side wall of the shell or the side plate of the second side. This prevents external dust and rainwater from entering the battery through the venting groove and affecting the internal components. Therefore, the area of ​​the venting groove can be set larger, effectively improving the explosion-proof effect.

[0028] 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

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 This is a schematic diagram of the overall structure of the battery;

[0031] Figure 2 This is a schematic diagram of the internal structure of a battery;

[0032] Figure 3 This is a schematic diagram of the installation of the explosion-proof components;

[0033] Figure 4 for Figure 3 A schematic diagram showing the explosion-proof plate in another position;

[0034] Figure 5 This is a schematic diagram of the flame-retardant module.

[0035] Figure 6 This is a schematic diagram showing the distribution of heat dissipation components, housing, and battery cell modules.

[0036] Figure 7 This is a schematic diagram of the heat dissipation component.

[0037] Figure 8 This is a schematic diagram of the electrode tab installation.

[0038] Icon labels:

[0039] Box body 100; shell 101; cover 102; first side 103; second side 104; elastic band 105; side plate 106; ventilation groove 107; mounting hole 108;

[0040] Battery module 200; Battery cell 201; Electrode 202;

[0041] Flame-retardant module 300; isolation plate 301; thermal aerosol fire extinguisher 302; flow channel 303; discharge port 304; heat conduction hole 305; flow pipe 306; connection channel 307;

[0042] Explosion-proof component 400; mounting base 401; explosion-proof plate 402; vent hole 403; first hole section 404; second hole section 405; connecting groove 406; elastic element 407; connecting part 408; elastic sheet 409; mounting part 410; mounting ring 411; convex ring 412; threaded hole 413; stud 414; sealing ring 415;

[0043] Heat dissipation component 500; mounting bracket 501; thermally conductive elastic part 502; first abutment part 503; second abutment part 504; slot 505. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] During charging and discharging, battery cells generate gas. Excessive gas can lead to high internal pressure, increasing the risk of explosion. Related technologies incorporate vents in the battery cover for ventilation. However, to minimize the impact of external dust and rainwater on internal components like the cell modules, these vents are typically small. Consequently, when a short circuit occurs in the cell module, generating significant heat or even ignition, the electrolyte decomposes rapidly, producing a large amount of gas. The small vents cannot adequately release this gas, resulting in poor explosion-proof performance.

[0049] In addition, some battery cases are equipped with thermal aerosol fire extinguishers. When a short circuit occurs in the battery's cell module, generating a large amount of heat, the thermal aerosol fire extinguisher is activated, producing a large amount of aerosol to absorb heat and reduce oxygen concentration, thereby retarding the flame. However, during use, it was found that the aerosol produced by the existing battery thermal aerosol fire extinguishers splashes everywhere, failing to effectively retard the cell module and resulting in poor flame-retardant effect. Furthermore, the aerosol can splash onto other components within the battery, potentially damaging them.

[0050] Therefore, this utility model proposes a battery and an electric two-wheeler, which can effectively solve the above problems.

[0051] The following is for reference. Figures 1 to 8 This invention describes a battery and an electric two-wheeler according to embodiments of the present invention.

[0052] like Figures 1 to 8 As shown, the battery according to the first aspect of the present invention includes a housing 100, a cell module 200, and a flame-retardant module 300.

[0053] For example, housing 100 may include housing 101 and cover 102.

[0054] The top of the housing 101 is open, and the housing 101 is used to install the cell module 200, the flame retardant module 300 and other components, such as the battery management system.

[0055] The cover 102 has a first side 103 and a second side 104. The first side 103 is hinged to one side of the top of the housing 101. The second side 104 is connected to an elastic band 105, which can be made of elastic rubber or elastic plastic. The bottom end of the elastic band 105 is detachably connected to the other side of the top of the housing 101. For example, the top end of the elastic band 105 can be connected or fastened to the second side 104 by fasteners, and the bottom end of the elastic band 105 can be connected or fastened to the other side of the top of the housing 101 by fasteners.

[0056] The cover 102 is provided with a side plate 106, which is attached to the outer side of the shell 101; wherein, the side plate 106 of the second side 104 is provided with a venting groove 107, and the side wall of the shell 101 covers the inner side of the venting groove 107; or, the side wall of the shell 101 is provided with a venting groove 107, and the side plate 106 of the second side 104 covers the outer side of the venting groove 107; when the bottom surface of the cover 102 is impacted by the airflow inside the shell 101, the second side 104 can move upward so that the inner cavity of the shell 101 and the external environment are connected through the venting groove 107.

[0057] The battery cell module 200 is located inside the housing 100, and the battery cell module 200 may include multiple battery cells 201.

[0058] The flame-retardant module 300 includes an isolation plate 301 and a thermal aerosol fire extinguisher 302. The isolation plate 301 is located inside the housing 100 and covers the top of the cell module 200 to separate the cell module 200 from some other components inside the battery. The isolation plate 301 is provided with a flow channel 303. The bottom end of the flow channel 303 is provided with an outlet 304 facing the cell module 200. The thermal aerosol fire extinguisher 302 is located inside the housing 100 and is connected to the flow channel 303. When activated, the thermal aerosol fire extinguisher 302 can input aerosol into the flow channel 303.

[0059] According to the battery of the first aspect of the present invention, when the cell module 200 inside the battery casing 101 experiences a short circuit and generates high temperature, the electrolyte decomposes instantaneously, producing a large amount of gas. The high-pressure gas flow then impacts the bottom surface of the cover 102, causing the elastic band 105 to stretch elastically under the impact force, and the second side 104 of the cover 102 can then move upward. When the vent groove 107 is provided on the side plate 106 of the second side 104, the vent groove 107 can move to a position above the casing 101, thereby allowing the inner cavity of the casing 101 to communicate with the external environment through the vent groove 107. When the vent groove 107 is provided on the side wall of the casing 101, the second side 104 of the cover 102 can move upward to expose the vent groove 107, thereby allowing the inner cavity of the casing 101 to communicate with the external environment through the vent groove 107, and thus allowing the high-pressure gas flow inside the casing 101 to be quickly discharged through the vent groove 107. Under normal circumstances, the side plate 106 of the cover 102 is attached to the outer side of the housing 101, and the ventilation groove 107 can be covered by the side wall of the housing 101 or the side plate 106 of the second side 104. In this way, external dust and rainwater can be prevented from entering the battery through the ventilation groove 107 and affecting the components inside the battery. As a result, the area of ​​the ventilation groove 107 can be set to be larger, thereby effectively improving the explosion-proof effect.

[0060] Furthermore, when a short circuit occurs in the battery cell module 200, generating high temperatures, the thermal aerosol fire extinguisher 302 is activated and produces a large amount of aerosol. The aerosol is transported into the guide channel 303 and then sprayed out through the outlet 304. In this invention, because an isolation plate 301 is provided, covering the top of the battery cell module 200, and the outlet 304 faces the battery cell module 200, the aerosol sprayed from the outlet 304 is concentrated on the battery cell module 200 instead of splashing randomly. This allows for concentrated flame retardancy of the battery cell module 200, resulting in a better flame retardant effect. It also reduces the risk of aerosol splashing onto other components inside the battery and affecting them.

[0061] It should be noted that the thermal aerosol fire extinguisher 302 is a common fire extinguishing structure inside batteries. When heated, it can generate aerosols. The aerosols can not only absorb heat, but also reduce the oxygen concentration inside the battery, thereby achieving a flame-retardant effect. The structure and working principle of the thermal aerosol fire extinguisher 302 will not be elaborated here.

[0062] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, the thermal aerosol fire extinguisher 302 is located at the top of the isolation plate 301. For example, the thermal aerosol fire extinguisher 302 can be connected to the top of the isolation plate 301 by fasteners, welding, or adhesive.

[0063] Compared to the thermal aerosol fire extinguisher 302 being located below the isolation plate 301, this embodiment allows the isolation plate 301 to be positioned closer to the battery cell module 200. This not only provides better coverage of the battery cell module 200 but also brings the discharge port 304 closer to the battery cell module 200, enabling the sprayed aerosol to provide more concentrated flame-retardant treatment to the battery cell module 200, thus improving its practicality. Furthermore, the thermal aerosol fire extinguisher 302 can be installed simply by installing the isolation plate 301, making installation more convenient.

[0064] In some embodiments of this utility model, such as Figure 5 As shown, the isolation plate 301 has a through-hole 305. The thermal aerosol fire extinguisher 302 is located above and covers the thermal aerosol fire extinguisher 305. A temperature sensor is provided at the bottom of the thermal aerosol fire extinguisher 302. For example, the thermal aerosol fire extinguisher 305 can be located near the middle of the isolation plate 301, with the bottom of the thermal aerosol fire extinguisher 305 close to the battery module 200 and the top of the thermal aerosol fire extinguisher 302 close to the battery module 200. The thermal aerosol fire extinguisher 302 can be activated based on the temperature sensed by the temperature sensor.

[0065] In this embodiment, when the battery module 200 experiences a short circuit and generates high temperature, the heat can be quickly transferred through the heat conduction hole 305 to the temperature sensor at the bottom of the thermal aerosol fire extinguisher 302. When the temperature sensor detects that the temperature is higher than the preset value, the thermal aerosol fire extinguisher 302 is quickly activated to generate aerosol, resulting in faster flame retardant fire extinguishing and a better flame retardant fire extinguishing effect.

[0066] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, a guide pipe 306 is connected to the top of the isolation plate 301. The guide pipe 306 and the isolation plate 301 enclose a guide channel 303, and the discharge port 304 is located on the isolation plate 301.

[0067] For example, the bottom end of the guide pipe 306 can be open and enclosed with the isolation plate 301 to form a guide channel 303. The discharge port 304 is located on the isolation plate 301 and runs through it from top to bottom. In this embodiment, this configuration makes the processing of the flame retardant module 300 simpler and more convenient.

[0068] It should be noted that a connecting channel 307 may be provided between the flow channel 303 and the discharge end of the thermal aerosol fire extinguisher 302 in this embodiment.

[0069] In addition, in some other embodiments of this utility model, a flow channel 303 may be directly opened in the isolation plate 301.

[0070] In some embodiments of this utility model, such as Figures 5 to 7 As shown, the battery cell module 200 includes a plurality of battery cells 201 arranged side by side, and a flow channel 303 is provided with at least one and extends along the arrangement direction of the plurality of battery cells 201. The flow channel 303 is provided with a plurality of discharge ports 304 along its own length direction.

[0071] In this embodiment, the flow channel 303 extends along the arrangement direction of the multiple battery cells 201, and the flow channel 303 is provided with multiple discharge ports 304 along its own length. In this way, the aerosol sprayed from the multiple discharge ports 304 can be sprayed onto the multiple battery cells 201 and between multiple groups of two adjacent battery cells 201, thereby making the flame retardancy more comprehensive and the flame retardant effect better.

[0072] In some embodiments of this utility model, such as Figure 2 , Figure 5 and Figure 8 As shown, a tab assembly is provided between two adjacent battery cells 201. The tab assembly includes two mating tabs 202. The two tabs 202 are respectively connected to the two adjacent battery cells 201. Among the three adjacent battery cells 201, the two tab assemblies connected to the middle battery cell 201 are arranged along the width direction of the battery cell 201. That is, each battery cell 201 is provided with two tabs 202. The two tabs 202 are arranged along the width direction of the battery cell 201. The two tabs 202 of the middle battery cell 201 are respectively mated with the corresponding tabs 202 on the two battery cells on both sides to form a tab assembly. Two flow channels 303 are provided and are arranged along the width direction of the battery cell 201.

[0073] In this embodiment, the two flow channels 303 can be located above the two tab assemblies connected to the battery cell 201. With this configuration, the aerosol sprayed from the multiple outlets 304 can be sprayed more concentratedly and accurately onto the multiple tab assemblies, and enter between multiple sets of two adjacent battery cells 201 from the positions of the multiple tab assemblies, thereby making the flame retardancy more comprehensive and the flame retardant effect better.

[0074] In some embodiments of this invention, the discharge port 304 corresponds one-to-one with the tab assembly, and the discharge port 304 faces the corresponding tab assembly. In this way, the aerosol sprayed from multiple discharge ports 304 can be sprayed more concentratedly and accurately onto multiple tab assemblies, and enter between multiple sets of adjacent battery cells 201 from multiple tab assemblies, thereby achieving more comprehensive flame retardancy and better flame retardant effect.

[0075] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the ventilation groove 107 is provided on the side plate 106 of the second side 104 and extends along the length of the side plate 106 of the second side 104. Two elastic bands 105 are provided and are respectively located on both sides of the ventilation groove 107. In this embodiment, this arrangement not only makes the ventilation groove 107 larger and the ventilation effect better, but also makes the connection between the cover 102 and the shell 101 more stable.

[0076] In some embodiments of this utility model, such as Figures 1 to 4 As shown, the battery also includes an explosion-proof component 400, which includes a mounting base 401 and an explosion-proof plate 402.

[0077] The mounting base 401 is installed on the cover 102, for example, it can be connected to the cover 102 by fasteners, or it can be snapped onto the cover 102. The mounting base 401 is provided with a through-hole 403, which includes a first hole section 404 and a second hole section 405. The first hole section 404 and the second hole section 405 can be coaxially arranged. The second hole section 405 is located below the first hole section 404, and the diameter of the second hole section 405 is smaller than that of the first hole section 404. When the cover 102 is installed on the top of the housing 101, the top of the first hole section 404 communicates with the outside, and the bottom of the second hole section 405 communicates with the inner cavity of the housing 101. The hole wall of the first hole section 404 is provided with a connecting groove 406, which extends vertically. The explosion-proof plate 402 is slidably installed in the first hole section 404 and covers the top of the second hole section 405. When the explosion-proof plate 402 covers the top of the second hole section 405, the bottom of the connecting groove 406 can be higher than the top of the explosion-proof plate 402 or located outside the explosion-proof plate 402.

[0078] When the airflow enters the second hole section 405 from the inner cavity of the housing 101, the explosion-proof plate 402 is impacted by the high-pressure airflow and slides upward. The explosion-proof plate 402 can be lifted by the airflow to a position higher than the bottom of the connecting groove 406, so that the top of the first hole section 404 is connected to the second hole section 405 through the connecting groove 406.

[0079] In this invention, under normal circumstances, the explosion-proof plate 402 covers the top of the second hole section 405, thereby preventing external dust and rainwater from entering the battery through the vent 403 and affecting the internal components. When the air pressure inside the battery is high, the high-pressure airflow enters the second hole section 405 from the bottom. The explosion-proof plate 402 slides upward under the impact of the high-pressure airflow. When the explosion-proof plate 402 is lifted by the airflow to a position higher than the bottom of the connecting groove 406, the top of the first hole section 404 connects to the second hole section 405 through the connecting groove 406, facilitating the rapid discharge of high-pressure airflow and preventing the battery from exploding. In this embodiment, not only is the explosion-proof effect better, but it also reduces the impact of external dust and rainwater on the internal components.

[0080] It is understood that the explosion-proof component 400 of this application can be used to discharge the gas generated during normal charging and discharging, so as to avoid the frequent lifting and lowering of the second side 104 of the cover 102, which would affect the use of the battery. When a short circuit occurs and a large amount of gas is generated, it can be discharged through the vent groove 107.

[0081] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the explosion-proof component 400 also includes an elastic element 407, which is connected to the hole wall of the first hole segment 404. For example, the elastic element 407 can be integrally formed with the hole wall of the first hole segment 404, welded, or connected by screws. The elastic element 407 elastically abuts against the upper end face of the explosion-proof plate 402. In this utility model, under normal circumstances, the elastic element 407 elastically abuts against the upper end face of the explosion-proof plate 402, so that the explosion-proof plate 402 can tightly cover the top of the second hole segment 405, resulting in a better sealing effect. Moreover, when the battery is installed in the vehicle, it can prevent the explosion-proof plate 402 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 405 from the bottom end and impacts the explosion-proof plate 402, the elastic element 407 elastically deforms, allowing the explosion-proof plate 402 to slide upward and release its cover over the second hole segment 405.

[0082] In some embodiments of this utility model, such as Figure 3 and Figure 4As shown, the elastic element 407 includes a connecting portion 408 and an elastic sheet 409. The connecting portion 408 is connected to the hole wall of the first hole segment 404. For example, the connecting portion 408 can be integrally formed with the hole wall of the first hole segment 404, welded, or connected by screws. The elastic sheet 409 is connected to the connecting portion 408. For example, the elastic sheet 409 can be integrally formed with the connecting portion 408 or welded. The elastic sheet 409 extends from top to bottom along the axis close to the first hole segment 404. This arrangement not only improves the elastic contact effect of the explosion-proof plate 402, thus improving the sealing performance of the explosion-proof plate 402, but also makes it easier for the elastic sheet 409 to undergo elastic deformation when the high-pressure airflow inside the battery enters the second hole segment 405 from the bottom end and impacts the explosion-proof plate 402, thereby facilitating air permeability and improving the explosion-proof effect.

[0083] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, multiple elastic elements 407 are arranged circumferentially along the first hole section 404, and multiple connecting grooves 406 are arranged circumferentially along the first hole section 404. The multiple elastic elements 407 not only provide better elastic contact with the explosion-proof plate 402, but also prevent the explosion-proof plate 402 from flipping during sliding. The multiple connecting grooves 406 allow for faster airflow, resulting in better air permeability and explosion-proof performance.

[0084] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the elastic element 407 and the connecting groove 406 are arranged in a staggered manner along the circumference of the first hole section 404. This arrangement can prevent the elastic element 407 from affecting the air permeability of the connecting groove 406.

[0085] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the cover 102 has a through mounting hole 108. The mounting base 401 includes a mounting part 410 and a stud 414. The mounting part 410 includes a mounting ring 411 and a convex ring 412. The mounting ring 411 is mounted on the upper end of the cover 102 by fasteners. The mounting ring 411 has a threaded hole 413. The convex ring 412 is located at the bottom end of the mounting ring 411 and is inserted into the mounting hole 108. A second hole section 405 is located on the convex ring 412. The diameter of the threaded hole 413 is larger than the diameter of the second hole section 405. The stud 414 is threadedly connected to the threaded hole 413. A first hole section 404 is located on the stud 414.

[0086] In this embodiment, during assembly, the protruding ring 412 is inserted into the mounting hole 108 of the cover 102, and the mounting ring 411 is connected to the cover 102 by fasteners. Then, the explosion-proof plate 402 is placed in the first hole section 404 of the stud 414, and the stud 414 is threaded into the threaded hole 413 of the mounting ring 411. The assembly is simple and convenient, which makes it easier to clean, maintain and replace.

[0087] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the top end of the stud 414 protrudes beyond the top end of the mounting ring 411. This design facilitates the rotation of the stud 414, thereby facilitating its installation and removal.

[0088] 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 412 is flush with the bottom surface of the cover 102, and the bottom surface of the convex ring 412 extends upward from the outside to the inside. With this configuration, the bottom surface of the convex ring 412 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 405 of the convex ring 412.

[0089] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, a sealing ring 415 is held between the bottom surface of the mounting ring 411 and the top surface of the cover 102. The sealing ring 415 reduces the amount of external water and dust that can enter the battery through the gap between the bottom surface of the mounting ring 411 and the top surface of the cover 102.

[0090] In related technologies, to improve the heat dissipation of the battery cell module 200 and further reduce the risk of battery explosion, the sides of multiple battery cells 201 in the battery cell module 200 are attached to the side wall of the housing 100, or a heat-conducting plate is installed between the sides of multiple battery cells 201 and the side wall of the housing 100 to transfer the heat generated by the battery cells 201 to the housing 100 and dissipate it through the housing 100. However, during use, it has been found that due to manufacturing and installation errors, the same side of multiple battery cells 201 is prone to misalignment, resulting in some battery cells 201 not being able to attach to the side wall of the housing 100 or the heat-conducting plate, leading to poor heat dissipation. In addition, when the side wall of the housing 100 is impacted, the battery cell module 200 is easily damaged due to excessive impact force.

[0091] To solve the above problems, refer to Figure 6 and Figure 7As shown, in some embodiments of this utility model, the battery further includes two heat dissipation components 500. The two heat dissipation components 500 are disposed inside the housing 100 and are respectively located on both sides of the width direction of the battery cell 201. The heat dissipation component 500 includes a mounting frame 501 and a plurality of thermally conductive elastic parts 502. The mounting frame 501 is installed inside the housing 100 and extends along the arrangement direction of the plurality of battery cells 201. The plurality of thermally conductive elastic parts 502 are disposed on the mounting frame 501 and arranged along the extension direction of the mounting frame 501. The thermally conductive elastic parts 502 are respectively provided with a first abutment part 503 and a second abutment part 504 on both sides of the extension direction of the mounting frame 501. The first abutment part 503 and the second abutment part 504 of the same thermally conductive elastic part 502 bend downward or upward in a direction away from each other. The plurality of first abutment parts 503 are respectively used to abut against the side of the plurality of battery cells 201 in the width direction, and the plurality of second abutment parts 504 are used to abut against the inner sidewall of the housing 100. The heat generated by the battery cell 201 can be transferred to the side wall of the housing 100 through multiple thermally conductive elastic parts 502, and then dissipated to the outside through the side wall of the housing 100.

[0092] In this embodiment, since multiple thermally conductive elastic portions 502 are individually provided, and each thermally conductive elastic portion 502 is elastic, and the first abutting portion 503 and the second abutting portion 504 of the thermally conductive elastic portion 502 bend and extend downward or upward in a direction away from each other, the thermally conductive elastic portion 502 can generate a large elastic deformation independently along the width direction of the cell 201. Therefore, even if the same side of multiple cells 201 is misaligned, the first abutting portion 503 and the second abutting portion 504 of the thermally conductive elastic portion 502 can still press tightly against the side of the cell 201 in the width direction and the inner side wall of the housing 100, respectively, resulting in better heat conduction and thus better heat dissipation of the battery. Moreover, the thermally conductive elastic portion 502 can play an elastic buffering role, so that when the side wall of the housing 100 is impacted, the impact force on the cell module 200 can be too great and damaged.

[0093] It should be noted that the thermally conductive elastic part 502 can be made of thermally conductive rubber, thermally conductive silicone or other suitable thermally conductive elastic materials.

[0094] refer to Figure 7 As shown, in some embodiments of this utility model, a slot 505 is provided on the outer side of the first abutment portion 503, and the slot 505 allows the battery cell 201 to be inserted into the side in the width direction. This makes the contact between the battery cell 201 and the thermally conductive elastic portion 502 closer, the contact area larger, and the thermal conductivity better, thereby improving the battery's heat dissipation effect.

[0095] refer to Figure 7As shown, in some embodiments of this utility model, the thermally conductive elastic part 502 is provided with a sleeve hole and is slidably sleeved onto the mounting bracket 501 through the sleeve hole. In this way, the position of the thermally conductive elastic part 502 can be appropriately adjusted according to the distance between two adjacent battery cells 201, so that the position of the thermally conductive elastic part 502 and the corresponding battery cell 201 is more adapted, thereby improving the contact and insertion effect between the thermally conductive elastic part 502 and the corresponding battery cell 201, making the contact between the battery cell 201 and the thermally conductive elastic part 502 tighter, improving the heat conduction effect, and thus improving the heat dissipation effect of the battery.

[0096] The electric two-wheeled vehicle according to a second aspect embodiment of the present invention includes the battery described in the first aspect embodiment.

[0097] According to the electric two-wheeled vehicle of this utility model embodiment, by adopting the battery of the first aspect embodiment of this utility model, under normal circumstances, the side plate 106 of the cover 102 is attached to the outer side of the shell 101, and the ventilation groove 107 can be covered by the side wall of the shell 101 or the side plate 106 of the second side 104. In this way, external dust and rainwater can be prevented from entering the battery through the ventilation groove 107 and affecting the components inside the battery. As a result, the area of ​​the ventilation groove 107 can be set to be larger, thereby effectively improving the explosion-proof effect. When the cell module 200 inside the battery experiences a short circuit and generates high temperature, the thermal aerosol fire extinguisher 302 is activated and generates a large amount of aerosol. The aerosol is transported into the guide channel 303 and then sprayed out through the discharge port 304.

[0098] Furthermore, in this invention, since an isolation plate 301 is provided, which covers the top of the cell module 200 and the discharge port 304 faces the cell module 200, the aerosol sprayed from the discharge port 304 will be concentrated on the cell module 200 instead of splashing randomly. This allows for concentrated flame retardancy of the cell module 200, resulting in a better flame retardant effect. It also reduces the risk of aerosol splashing onto other components inside the battery and affecting them.

[0099] It should be noted that since electric two-wheeled vehicles can adopt all the technical solutions of the batteries in the first aspect embodiment described above, they have 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.

[0100] It is understood that other components and operations of the electric two-wheeler according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0101] 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, characterized in that, include: The housing includes a shell and a cover. The top of the shell is open. The cover has a first side and a second side. The first side is hinged to one side of the top of the shell. The second side is connected to an elastic band. The bottom end of the elastic band is detachably connected to the other side of the top of the shell. The cover has a side plate that fits against the outer side of the shell. The side plate on the second side has a venting groove. The side wall of the shell covers the inner side of the venting groove. Alternatively, the side wall of the shell has a venting groove, and the side plate on the second side covers the outer side of the venting groove. The battery cell module is disposed within the housing; A flame-retardant module includes an isolation plate and a thermal aerosol fire extinguisher. The isolation plate is disposed inside the housing and covers the top of the battery cell module. The isolation plate is provided with a flow channel. The bottom end of the flow channel is provided with a discharge port facing the battery cell module. The thermal aerosol fire extinguisher is disposed inside the housing and communicates with the flow channel. When the bottom surface of the cover is impacted by the airflow inside the shell, the second side can move upward, allowing the inner cavity of the shell and the external environment to connect through the ventilation groove. After the thermal aerosol fire extinguisher is activated, it can input aerosol into the flow channel.

2. The battery according to claim 1, characterized in that, The isolation plate is provided with heat conduction holes running vertically through it. The thermal aerosol fire extinguisher is located above the heat conduction holes and covers them. The bottom of the thermal aerosol fire extinguisher is provided with a temperature sensor.

3. The battery according to claim 1, characterized in that, The battery also includes: An explosion-proof component includes a mounting base and an explosion-proof plate. The mounting base is installed on the cover and has a through-hole. The through-hole 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 airflow inside the housing enters the second hole section, 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 hole section can communicate with the second hole section through the connecting groove.

4. The battery according to claim 3, 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.

5. The battery according to claim 4, 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.

6. The battery according to claim 3, characterized in that, The cover 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 to 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. A stud is threaded into the threaded hole, and the first hole section is provided in the stud.

7. The 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, and the bottom surface of the convex ring extends upward from the outside to the inside.

8. The battery according to claim 1, characterized in that, The battery cell module includes multiple battery cells arranged side by side. The battery also includes two heat dissipation components, which are disposed inside the housing and located on both sides of the width direction of the battery cells. The heat dissipation components include: The mounting bracket is installed inside the housing and extends along the arrangement direction of the plurality of battery cells; Multiple thermally conductive elastic parts are disposed on the mounting frame and arranged along the extension direction of the mounting frame. Each thermally conductive elastic part has a first abutment part and a second abutment part on both sides of the extension direction of the mounting frame. The first abutment part and the second abutment part of the same thermally conductive elastic part bend downward or upward in a direction away from each other. The multiple first abutment parts are used to abut against the side of the multiple battery cells in the width direction, and the multiple second abutment parts are used to abut against the inner sidewall of the housing.

9. The battery according to claim 8, characterized in that, The outer side of the first abutment portion is provided with a slot, the slot for insertion of the side of the battery cell in the width direction; and / or, The thermally conductive elastic part is provided with a sleeve hole and is slidably fitted onto the mounting bracket through the sleeve hole.

10. An electric two-wheeled vehicle, characterized in that, Includes the battery as described in any one of claims 1 to 9.

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