Fireproof flame-retardant device for electric bicycle

Abstract

The fireproof flame-retardant device for the electric bicycle is characterized in that a containing bin and a cover plate are arranged at the top of a bicycle frame, the containing bin is used for containing a battery, and the cover plate can buckle and seal the containing bin in the first direction. A mounting plate is arranged at the bottom, in the first direction, of the placement bin, flame-retardant layers are arranged on the side wall, in the second direction and the side wall, in the third direction, of the placement bin, the flame-retardant layers are made of flame-retardant materials, the flame-retardant layers made of the flame-retardant materials can effectively stop or slow down the development of the fire at the initial stage of the fire, and safety is improved. Through the design, the overall safety performance of the electric bicycle is improved, the fire risk is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a fire-proof and flame-retardant device for an electric bicycle. Background Art

[0002] Lithium batteries refer to batteries that contain lithium (including metallic lithium, lithium alloys, lithium ions, and lithium polymers) in the electrochemical system. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Lithium batteries are widely used in electric vehicles, mobile phone batteries and other products due to their high energy storage and convenient charging and discharging. Lithium batteries are prone to fire due to thermal runaway caused by short circuits, poor heat dissipation due to overcharging or excessively high ambient temperatures. If the fire is not extinguished in time, it will cause the fire to spread and affect the safety of the surrounding environment. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a fire retardant device for electric bicycles to solve the problem of fire caused by thermal runaway of lithium batteries affecting the safety of the surrounding environment proposed in the above background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is a fire retardant device for an electric bicycle, the electric bicycle includes a frame, and the fire retardant device for an electric bicycle includes:

[0005] The placement bin and the cover plate are both arranged on the top of the frame. The placement bin is used to place batteries, and the cover plate can be buckled along a first direction to close the placement bin.

[0006] The bottom of the placement bin along the first direction is provided with a mounting plate, and the side walls along the second direction and the side walls along the third direction are provided with flame retardant layers, and the flame retardant layers are made of flame retardant materials. The first direction, the second direction and the third direction are perpendicular to each other.

[0007] The fireproof and flame-retardant device for electric bicycles provided by the utility model can effectively protect the battery from external factors by setting a special placement compartment on the top of the frame for placing the battery and equipping it with a cover plate. The bottom mounting plate and the side walls of the placement compartment are both provided with a flame-retardant layer. The flame-retardant layer made of flame-retardant material can effectively prevent or slow down the development of the fire in the early stage of the fire, thereby improving safety. Through the above design, the overall safety performance of the electric bicycle is improved, which not only reduces the risk of fire, but also improves the user experience.

[0008] In some embodiments, the placement bin is provided with mounting slots at intervals on the top of one side along the third direction, and the bottom of the cover plate is provided with hooks corresponding to the mounting slots for being engaged and fixed with the mounting slots.

[0009] By adopting the above technical solution, the sealing of the placement compartment and the stability of the overall structure can be improved through the fixing method of the card slot and the card hook, the battery displacement caused by vibration or impact can be reduced, and it is convenient for users to replace or maintain the battery.

[0010] In some embodiments, along the first direction, the height of the flame retardant layer is 15 mm higher than the height of the battery.

[0011] By adopting the above technical solution, the flame retardant layer is designed to be 15 mm higher than the battery, which can form an additional protective barrier inside the storage compartment and enhance the structural stability of the entire battery storage compartment.

[0012] In some embodiments, the storage bin further includes a ventilation component. The ventilation component includes a ventilation channel and a knob valve. The ventilation channel is provided in the frame and is located on one side of the storage bin along the third direction, and is used to connect the storage bin with the external atmosphere. The knob valve is correspondingly provided on the surface of the frame, and is used to open or close the ventilation channel.

[0013] By adopting the above technical solution and setting up a ventilation channel, the battery can be effectively helped to dissipate heat and prevent safety hazards caused by overheating. The design of the knob valve allows the ventilation channel to be opened or closed, so that the channel can be closed when ventilation is not required.

[0014] In some embodiments, two ends of the cover plate along the first direction are provided with flow-guiding folds bent toward the battery.

[0015] By adopting the above technical solution, the guide fold helps air circulation and improves the heat dissipation efficiency of the battery, thereby reducing the temperature of the battery during operation and increasing the service life and safety of the battery.

[0016] In some embodiments, a fireproof sticker is disposed at the bottom of the cover plate corresponding to the battery.

[0017] By adopting the above technical solution, the fireproof sticker can provide an additional insulation layer when the battery is overheated, reduce the direct impact of heat on the battery, help maintain the operating temperature of the battery, and extend the battery life. The fireproof sticker is usually made of flame retardant materials. If a fire source is encountered, it can effectively slow down the speed at which the fire spreads to the battery and increase safety.

[0018] In some embodiments, along the first direction, the cover plate includes a base layer and a fireproof layer.

[0019] By adopting the above technical solution, adding a fireproof layer to the cover can provide additional flame retardant effect. When a battery fire occurs, the fireproof layer can slow down the spread of the fire and protect other parts of the electric bicycle from damage. By combining the fireproof layer with the base layer, structural optimization can be achieved, so that the cover has better fire resistance while maintaining lightness.

[0020] In some embodiments, the base layer is made of a metal cover plate. The fireproof layer and the flame retardant layer are both made of a woven mesh made of fireproof ceramic fiber material. The mounting plates are both made of asbestos material.

[0021] With the above technical solution, metal materials have the characteristics of high strength, impact resistance, corrosion resistance, etc., which can provide solid protection. At the same time, the thermal conductivity of metal materials can quickly disperse heat and reduce the risk of local overheating. Ceramic fiber has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, low specific heat and mechanical vibration resistance. It can effectively block flames and high temperatures and improve the fire resistance of electric bicycles.

[0022] In some embodiments, the fireproof layer and the flame retardant layer are both woven fabrics made of flame retardant material with carbon fiber as the matrix.

[0023] By adopting the above technical scheme, the carbon fiber itself has very high strength and modulus. The woven cloth used as the matrix can improve the overall mechanical strength of the cover plate and increase durability. The flame-retardant woven cloth based on the carbon fiber matrix has excellent flame-retardant properties, which can effectively prevent the spread of fire and provide stronger fire protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of an embodiment of a fire retardant device for an electric bicycle according to the utility model Figure 1 ;

[0025] Figure 2 A three-dimensional diagram of an embodiment of a fire retardant device for an electric bicycle according to the utility model Figure 2 ;

[0026] In the figure:

[0027] 1. Fire retardant device for electric bicycles; 2. Frame; 3. Storage compartment; 30. Mounting plate; 31. Side wall; 32. Mounting slot; 33. Knob valve; 4. Battery. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] refer to Figure 1 and Figure 2 , Figure 1 The three-dimensional diagram of a fire retardant device 1 for an electric bicycle provided by an embodiment of the utility model is shown. Figure 1 ; Figure 2The three-dimensional diagram of a fire retardant device 1 for an electric bicycle provided by an embodiment of the utility model is shown. Figure 2 .

[0034] like Figure 1 and Figure 2 As shown, the technical solution provided by the present application is a fire retardant device 1 for an electric bicycle, the electric bicycle includes a frame 2, and the fire retardant device 1 for an electric bicycle includes: a placement compartment 3 and a cover plate are both arranged on the top of the frame, the placement compartment 3 is used to place a battery 4, and the cover plate can be moved along a first direction ( Figure 1 The storage bin 3 is buckled and closed in the Z direction. The storage bin 3 is provided with a mounting plate 30 at the bottom along the first direction and a mounting plate 30 along the second direction ( Figure 1 The side wall 31 along the third direction ( Figure 1 The side walls 31 (shown in the Y direction) are all provided with a flame retardant layer, the flame retardant layer is made of flame retardant material, and the first direction, the second direction and the third direction are perpendicular to each other.

[0035] The fireproof and flame-retardant device 1 for electric bicycles provided in the present application can effectively protect the battery 4 from external factors by providing a special placement compartment 3 on the top of the frame 2 for placing the battery 4 and equipping it with a cover plate. The bottom mounting plate 30 and the side walls 31 of the placement compartment 3 are both provided with a flame-retardant layer. The flame-retardant layer made of flame-retardant material can effectively prevent or slow down the development of the fire in the early stage of the fire, thereby improving safety. Through the above design, the overall safety performance of the electric bicycle has been improved, which not only reduces the risk of fire, but also improves the user experience.

[0036] In some embodiments, reference Figure 1 and Figure 2 The top of the placement bin 3 along one side of the third direction is spaced apart with an installation slot 32. The bottom of the cover plate is provided with a hook corresponding to the installation slot 32, which is used to be fixed with the installation slot 32.

[0037] Exemplarily, by the fixing method of the card slot and the card hook, the sealing of the placement compartment 3 and the stability of the overall structure can be improved, the displacement of the battery 4 caused by vibration or impact can be reduced, and it is convenient for users to replace or maintain the battery 4.

[0038] In some embodiments, reference Figure 1 and Figure 2 , along the first direction, the height of the flame retardant layer is 15 mm higher than the height of the battery 4 .

[0039] Illustratively, the design in which the flame retardant layer is 15 mm higher than the battery 4 can form an additional protective barrier inside the storage compartment 3, enhance the structural stability of the entire battery 4 storage compartment 3, reduce the displacement or damage of the battery 4 caused by road bumps or accidental impacts, and effectively prevent the spread of flames when the battery 4 overheats or catches fire. This design meets or exceeds the latest safety standards, such as the "Safety Technical Specifications for Electric Bicycles" (GB17761-2018), which sets clear requirements for the fire resistance of electric bicycles, including test methods and requirements for flame retardant properties.

[0040] In some embodiments, reference Figure 1 and Figure 2 The storage bin 3 also includes a ventilation component. The ventilation component includes a ventilation channel and a knob valve 33. The ventilation channel is provided in the frame 2 and is located on one side of the storage bin 3 along the third direction, and is used to connect the storage bin 3 with the external atmosphere. The knob valve 33 is correspondingly provided on the surface of the frame 2, and is used to open or close the ventilation channel.

[0041] For example, proper ventilation is helpful for the performance and life of the battery 4, because the battery 4 works more stably and lasts longer at a suitable temperature. By setting up the ventilation channel, the battery 4 can be effectively ventilated to prevent safety hazards caused by overheating. When the battery 4 is thermally runaway, it can also be used as a pressure relief channel to assist in pressure relief. The design of the knob valve 33 allows the ventilation channel to be opened or closed, so that the channel can be closed when ventilation is not needed.

[0042] In some embodiments, two ends of the cover plate along the first direction are provided with flow-guiding folds bent toward the direction close to the battery 4 .

[0043] For example, the guide fold helps air circulation and improves the heat dissipation efficiency of the battery 4, thereby reducing the temperature of the battery 4 during operation and improving the service life and safety of the battery 4. The guide fold can also provide additional physical protection for the battery 4 and reduce damage to the battery 4 caused by impact or vibration.

[0044] In some embodiments, a fireproof sticker is provided at the bottom of the cover plate corresponding to the battery 4 .

[0045] Exemplarily, the fireproof sticker can provide an additional insulation layer when the battery 4 is overheated, reduce the direct impact of heat on the battery 4, help maintain the operating temperature of the battery 4, and extend the life of the battery 4. The fireproof sticker is usually made of flame-retardant materials. In the event of a fire source, it can effectively slow down the speed at which the fire spreads to the battery 4, thereby increasing safety.

[0046] In some embodiments, along the first direction, the cover panel includes a base layer and a fire protection layer.

[0047] For example, adding a fireproof layer to the cover plate can provide an additional flame retardant effect. When a fire occurs in the battery 4, the fireproof layer can slow down the spread of the fire and protect other components of the electric bicycle from damage. By combining the fireproof layer with the base layer, structural optimization can be achieved, so that the cover plate has better fireproof performance while maintaining lightness.

[0048] In some embodiments, the base layer is made of a metal cover plate. The fireproof layer and the flame retardant layer are both made of a woven mesh made of fireproof ceramic fiber material. The mounting plate 30 is made of asbestos material.

[0049] Exemplarily, metal materials have the characteristics of high strength, impact resistance, corrosion resistance, etc., and can provide solid protection. At the same time, the thermal conductivity of metal materials can quickly disperse heat and reduce the risk of local overheating. Ceramic fiber has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat and resistance to mechanical vibration. It can effectively block flames and high temperatures and improve the fire resistance of electric bicycles. Asbestos has good heat resistance, electrical insulation and thermal insulation, and is an important fireproof, insulating and heat-insulating material. The mounting plate 30 made of asbestos can provide additional thermal insulation and fire protection, while having high mechanical strength.

[0050] In some embodiments, both the fireproof layer and the flame retardant layer are woven fabrics made of flame retardant material with carbon fiber as the matrix.

[0051] For example, carbon fiber itself has high strength and modulus. The woven cloth used as the matrix can improve the overall mechanical strength of the cover and increase durability. The flame-retardant woven cloth with carbon fiber matrix has excellent flame-retardant properties, which can effectively prevent the spread of fire and provide stronger fire protection.

[0052] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A fire retardant device for an electric bicycle, the electric bicycle comprising a frame, characterized in that: The fire retardant device for electric bicycles comprises: A storage compartment and a cover plate are both arranged on the top of the frame, the storage compartment is used to store batteries, and the cover plate can be buckled and closed along a first direction to close the storage compartment; The bottom of the placement bin along the first direction is provided with a mounting plate, and the side walls along the second direction and the side walls along the third direction are provided with flame retardant layers, and the flame retardant layers are made of flame retardant materials. The first direction, the second direction and the third direction are perpendicular to each other.

2. The fire retardant device for electric bicycle according to claim 1, characterized in that: The placement bin is provided with mounting slots at intervals at the top of one side along the third direction; the cover plate is provided with hooks corresponding to the mounting slots at the bottom for being connected and fixed with the mounting slots.

3. The fire retardant device for electric bicycle according to claim 1, characterized in that: Along the first direction, the height of the flame retardant layer is 15 mm higher than the height of the battery.

4. The fire retardant device for electric bicycle according to claim 1, characterized in that: The storage bin also includes a ventilation component; the ventilation component includes a ventilation channel and a knob valve, the ventilation channel is arranged in the frame and is located on one side of the storage bin along the third direction, and is used to connect the storage bin and the external atmosphere; the knob valve is correspondingly arranged on the surface of the frame, and is used to open or close the ventilation channel.

5. The fire retardant device for electric bicycle according to claim 1, characterized in that: The cover plate has flow-guiding folds at both ends along the first direction, the folds being bent toward the battery.

6. The fire retardant device for electric bicycle according to claim 1, characterized in that: The bottom of the cover plate is provided with a fireproof sticker corresponding to the battery.

7. The fire retardant device for electric bicycle according to claim 1, characterized in that: Along the first direction, the cover plate includes a base layer and a fireproof layer.

8. The fire retardant device for electric bicycle according to claim 7, characterized in that: The base layer is made of a metal cover plate; the fireproof layer and the flame retardant layer are both made of a woven mesh made of fireproof ceramic fiber material; and the mounting plates are both made of asbestos material.

9. The fire retardant device for electric bicycle according to claim 7, characterized in that: The fireproof layer and the flame retardant layer are both woven fabrics made of flame retardant material with carbon fiber as the matrix.

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