Battery explosion-proof box of electric golf cart

Abstract

The utility model relates to a battery explosion-proof box of an electric golf cart, which comprises a box body and a box cover capable of covering and locking on the box body, a pressure relief opening is arranged on the box body and / or the box cover, and a breathable flame-retardant layer is fixed in the pressure relief opening; the box body and the box cover are made of steel plates; the battery capacity of the electric golf trolley is 180-400 Wh. When the battery box is used, a battery can be arranged in the battery box, and when the battery is in thermal runaway, the pressure relief opening can discharge gas generated by the battery out of the battery box, so that explosion of the battery is limited in the battery box, explosives are prevented from being splashed out, and meanwhile, flame is isolated in the battery box by utilizing the breathable flame-retardant layer, so that the explosion of the battery is avoided. The fire hazard can be avoided, and the safety performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery protection, and in particular relates to an explosion-proof box for a battery of an electric golf bag vehicle. Background Art

[0002] With the development of modern science and technology, lithium-ion batteries such as ternary lithium batteries and lithium iron phosphate batteries can provide energy sources for electronic devices at any time, and are therefore widely used, such as electric bicycles, electric cars, electric golf carts, etc. Among them, golf bag carts are used to carry golf bags containing golf clubs and other items, and electric golf bag carts powered by lithium batteries can use electric drive instead of manual labor, making them more convenient and labor-saving to use.

[0003] Existing lithium-ion batteries may trigger thermal runaway if they are mechanically damaged, thermal management fails, or are overcharged or over-discharged during transportation, storage, or charging. After thermal runaway is triggered, a large amount of high-temperature flammable mixed gas, dust, etc. will be generated, and the enclosed space of the shell will cause the generated heat, gas, and flame to be unable to be discharged in time, which will easily lead to explosions and fires, endangering personal and property safety. Utility Model Content

[0004] The utility model aims to provide an explosion-proof box for a battery of an electric golf bag vehicle, so as to solve the problem that the battery is prone to explosion hazards.

[0005] The utility model is an electric golf bag car battery explosion-proof box is realized as follows:

[0006] An explosion-proof box for a battery in an electric golf bag vehicle comprises a box body and a box cover that can be covered and locked on the box body, wherein a pressure relief port is provided on the box body and / or the box cover, and a breathable flame retardant layer is fixed in the pressure relief port;

[0007] The box body and the box cover are made of steel plates;

[0008] The battery capacity of the electric golf bag car is 180-400Wh.

[0009] Furthermore, the pressure relief port is arranged on the box cover.

[0010] Furthermore, the area of ​​the pressure relief port is 50 to 180 cm 2 .

[0011] Furthermore, the pressure relief port includes a plurality of through holes.

[0012] Furthermore, the through hole is a strip-shaped hole.

[0013] Furthermore, a fixing piece for fixing the breathable flame-retardant layer is arranged on the inner side of the pressure relief port.

[0014] Furthermore, the fixing member is a pressing plate with exhaust holes;

[0015] The exhaust hole is arranged corresponding to the pressure relief port.

[0016] Furthermore, the fixing member is a metal mesh or a fixing frame.

[0017] Furthermore, a charging interface is provided on the box cover, and a power cord connected to the charging interface is provided inside the box cover.

[0018] Furthermore, the box cover is provided with a cover shell with an opening facing the side and covering the charging port.

[0019] Furthermore, a lock buckle is provided on one side of the box body, and a lock hook cooperating with the lock buckle is provided on the box cover;

[0020] The box body on one side opposite to the lock buckle is connected to the box cover via a hinge.

[0021] Furthermore, the thickness of the steel plate is 1 to 3 mm.

[0022] Furthermore, the box body and the box cover are made of cold-rolled steel plate or stainless steel plate.

[0023] Furthermore, the breathable flame retardant layer is ceramic fiber cloth or asbestos;

[0024] The thickness of the ceramic fiber cloth is 5 to 20 mm.

[0025] Furthermore, a handle is provided on the box cover.

[0026] After adopting the above technical solution, the utility model has the following beneficial effects:

[0027] When the electric golf bag vehicle needs to be charged or needs to be stored for a long time, the battery of the electric golf bag vehicle can be taken out and placed in the explosion-proof battery box of the electric golf bag vehicle provided by the utility model. When the battery has thermal runaway, the pressure relief port can discharge the gas generated by the battery out of the battery box, thereby limiting the explosion of the battery within the battery box and avoiding the splashing of explosives. At the same time, the breathable flame retardant layer is used to isolate the flame within the battery box, which can avoid causing fire and improve safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 It is a structural diagram of the battery explosion-proof box of the electric golf bag vehicle of the preferred embodiment of the utility model;

[0030] Figure 2 It is a structural diagram of the battery explosion-proof box of the electric golf bag vehicle of the preferred embodiment of the utility model;

[0031] Figure 3 It is a cross-sectional view of the box cover of the battery explosion-proof box of the electric golf bag vehicle according to the preferred embodiment of the utility model;

[0032] In the figure: box body 1, box cover 2, breathable flame retardant layer 3, strip hole 4, pressing plate 5, exhaust hole 6, charging interface 7, power cord 8, threading hole 9, cover 10, lock buckle 11, lock hook 12, hinge 13, reinforcement plate 14, handle 15. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-3 As shown, an explosion-proof battery box for an electric golf bag vehicle comprises a box body 1 and a box cover 2 which can be covered and locked on the box body 1. A pressure relief port is arranged on the box body 1 and / or the box cover 2, and a breathable flame-retardant layer 3 is fixed in the pressure relief port. The box body 1 and the box cover 2 are made of steel plates. The battery capacity of the electric golf bag vehicle is 180 to 400Wh.

[0036] This battery capacity is suitable for batteries used in electric golf carts.

[0037] At the same time, the shape of the explosion-proof box is not limited to a cuboid, a cube or a cylinder, and its shape can be adjusted according to specific needs.

[0038] The pressure relief vent is used to discharge the gas generated by the batteries in the battery box in time to avoid excessive pressure in the battery box and explosion.

[0039] In this embodiment, the pressure relief port is arranged on the box cover 2 .

[0040] The position of the pressure relief port can be selected as needed, and is not limited to being set on the box cover 2 , and can also be set on any one or more sides of the box body 1 , or the pressure relief port can be set on both the box cover 2 and the box body 1 .

[0041] Compared with setting the pressure relief port on the box body 1, setting it on the box cover 2 can not only ensure the strength of the box body 1, but also make the processing method simpler and reduce the cost.

[0042] The area of ​​the pressure relief port is 50 to 180 cm 2 .

[0043] A pressure relief port of this area can quickly and effectively discharge the gas that expands due to heat during combustion, while also ensuring the stability of the explosion-proof box structure.

[0044] In order to achieve exhaust and pressure relief for the battery box, the pressure relief port includes a plurality of through holes.

[0045] In order to improve the efficiency of exhaust pressure relief, the through hole is a strip-shaped hole 4 .

[0046] The shape of the through hole is not limited to the strip hole 4, and a circular hole, a square hole, a combination of a circular hole and a strip hole 4, or other feasible forms may also be used.

[0047] Compared with circular holes, the strip holes 4 arranged in rows in this embodiment can ensure the strength of the box cover 2 while having a better pressure relief effect, higher efficiency and correspondingly better safety.

[0048] Compared with the traditional pressure relief valve or explosion-proof valve pressure relief method, the valve is easily deformed by high-temperature combustible gas or flame, or blocked by dust, etc., thus causing the problem of pressure relief failure. The strip hole 4 pressure relief port used in this embodiment can effectively avoid the occurrence of this problem.

[0049] The breathable flame-retardant layer 3 is provided to discharge the gas in the battery box while preventing the leakage of open flames from the battery box. In order to ensure the firmness of the breathable flame-retardant layer 3, a fixing part for fixing the breathable flame-retardant layer 3 is provided on the inner side of the pressure relief port.

[0050] In this embodiment, the fixing member is a pressing plate 5 with an exhaust hole 6 .

[0051] In order to ensure the rapid discharge of gas in the battery box, the exhaust hole 6 is arranged corresponding to the pressure relief port.

[0052] Correspondingly, the exhaust holes 6 are also strip-shaped hole structures arranged in rows.

[0053] The structure of the fixing member is not limited to the above-mentioned pressing plate 5 structure, and a metal mesh or a fixing frame can also be used.

[0054] The metal mesh can be directly placed on the inner side of the air-permeable flame-retardant layer 3 and connected to the box cover 2 by screws.

[0055] The fixing frame can adopt a plate frame structure placed on the inner side of the breathable flame-retardant layer 3, and the plate frame is connected to the box cover 2 by screws, so that the breathable flame-retardant layer can be fixed; in addition, the fixing frame can also adopt an outer frame structure that is coated on the periphery of the breathable flame-retardant layer 3 and fixedly connected to the breathable flame-retardant layer 3, and the outer frame can also be connected to the box cover 2 by screws, so as to fix the breathable flame-retardant layer 3.

[0056] Compared with other fixing means, the fixing means in this embodiment uses a pressing plate 5 structure with exhaust holes 6, which has a better fixing effect on the breathable flame retardant layer 3 and a better stability of the breathable flame retardant layer 3.

[0057] In order to enable direct charging when the battery is placed in the battery box and to avoid problems such as battery explosion during charging, a charging interface 7 is provided on the box cover 2, and a power cord 8 connected to the charging interface 7 is provided inside the box cover 2.

[0058] By connecting the charging connector of the battery to the power cord 8, the battery can be connected to the charging interface 7. At this time, the battery in the battery box can be directly charged by directly plugging the external charging plug into the charging interface 7, which is convenient and safe to use.

[0059] Preferably, the pressing plate 5 is provided with a threading hole 9 for passing the power cord 8 .

[0060] In order to protect the charging interface 7 and prevent rainwater from falling into the charging interface 7 , the box cover 2 is provided with a cover shell 10 with an opening facing the side and covering the charging interface 7 .

[0061] The charging interface 7 is located at the opening side of the housing 10, so as to be conveniently connected to an external charging plug.

[0062] In order to lock the box body 1 and the box cover 2 , a lock buckle 11 is provided on one side of the box body 1 , and a lock hook 12 cooperating with the lock buckle 11 is provided on the box cover 2 .

[0063] After the box cover 2 is closed on the box body 1 , the hanging ring of the lock buckle 11 is hung on the lock hook 12 , and the wrench of the lock buckle 11 is pressed down to lock the lock buckle 11 with the lock hook 12 , thereby locking the box cover 2 and the box body 1 .

[0064] The locking method of the box cover 2 and the box body 1 is not limited to the matching method of the lock buckle 11 and the lock hook 12, nor is it limited to the above-mentioned one locking mechanism, that is, two or even more locking mechanisms can be arranged on the periphery of the box cover 2.

[0065] In order to achieve the connection between the box cover 2 and the box body 1 , the box body 1 on the side opposite to the lock buckle 11 is connected to the box cover 2 via a hinge 13 .

[0066] The box cover 2 and the box body 1 are not limited to being connected by the hinge 13, and the two can also adopt a split design and be directly connected and locked by multiple locking mechanisms.

[0067] In order to ensure the strength of the battery box, a reinforcing plate 14 is provided on the outer surface of the box body 1 at the installation position of the lock 11 and the hinge 13 .

[0068] Preferably, the reinforcing plate 14 is fixed to the outside of the box body 1 by welding.

[0069] In order to ensure the strength of the explosion-proof box, effectively limit the explosion of the battery within the explosion-proof box, and take into account the weight and manufacturing cost of the box body, the thickness of the steel plate is 1 to 3 mm.

[0070] In order to improve the structural strength and explosion-proof performance of the battery box, the box body and the box cover are made of cold-rolled steel plate or stainless steel plate.

[0071] The material selection of the box body 1 and the box cover 2 is not limited to the above two types, and any material that can withstand the high temperature of battery combustion and the impact of battery explosion can be used.

[0072] In this embodiment, the box body and the box bottom of the box body 1 are welded together, and the periphery of the box bottom is wrapped around the periphery of the bottom of the box body, which effectively ensures the firmness of the connection between the two and improves the strength of the box body 1.

[0073] In order to realize the exhaust flame retardant function of the pressure relief port, the breathable flame retardant layer 3 is ceramic fiber cloth or asbestos.

[0074] The breathable flame retardant layer 3 is not limited to ceramic fiber cloth and asbestos, and other breathable, high temperature resistant and flame retardant materials can also be used.

[0075] In order to ensure that the flame is completely isolated in the explosion-proof box, the thickness of the ceramic fiber cloth is 5 to 20 mm.

[0076] In order to facilitate extraction of the battery box, a handle 15 is provided on the box cover 2 .

[0077] Preferably, the handle 15 is a folding structure, which can be folded to fit on the box cover 2, thereby reducing the overall height of the entire battery box, and it can be pulled up when in use.

[0078] The battery box of this embodiment can be used to place the batteries of the electric golf bag car. When storing, transporting or charging, the batteries can be placed in the battery box to avoid dangerous situations such as explosion and fire.

[0079] When the battery is stored, transported or charged, it is placed in the battery box and the box cover 2 and the box body 1 are locked. During this process, if the battery has thermal runaway, the gas generated will be discharged from the pressure relief port in time. When the battery explodes, the explosion range is limited to the battery box, which can effectively avoid the random splashing of explosives; and through the provision of the breathable flame retardant layer 3, the flame can be blocked in the battery box, thereby preventing fire and improving the safety of the battery during storage, transportation or charging.

[0080] The explosion-proof box suitable for the electric golf bag car battery with the above power range of 180-400Wh, regardless of its shape, is within the scope of the battery explosion-proof box protected by the present invention.

[0081] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An explosion-proof box for an electric golf bag battery, characterized in that: It comprises a box body (1), and a box cover (2) that can be covered and locked on the box body (1), the box body (1) and / or the box cover (2) are provided with a pressure relief port, and a breathable flame retardant layer (3) is fixed in the pressure relief port; The box body (1) and the box cover (2) are made of steel plates; The battery capacity of the electric golf bag car is 180-400Wh.

2. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The pressure relief port is arranged on the box cover (2).

3. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The area of ​​the pressure relief port is 50 to 180 cm 2 .

4. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The pressure relief port includes a plurality of through holes.

5. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 4, characterized in that: The through hole is a strip-shaped hole (4).

6. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: A fixing piece for fixing the air-permeable flame-retardant layer (3) is arranged on the inner side of the pressure relief port.

7. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 6, characterized in that: The fixing member is a pressing plate (5) with an exhaust hole (6); The exhaust hole (6) is arranged corresponding to the pressure relief port.

8. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 6, characterized in that: The fixing member is a metal mesh or a fixing frame.

9. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The box cover (2) is provided with a charging interface (7), and the box cover (2) is provided with a power line (8) connected to the charging interface (7).

10. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 9, characterized in that: The box cover (2) is provided with a cover shell (10) with an opening facing the side and covering the charging interface (7).

11. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: A lock buckle (11) is provided on one side of the box body (1), and a lock hook (12) cooperating with the lock buckle (11) is provided on the box cover (2); The box body (1) on the side opposite to the lock buckle (11) is connected to the box cover (2) via a hinge (13).

12. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The thickness of the steel plate is 1 to 3 mm.

13. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The box body (1) and the box cover (2) are made of cold-rolled steel plate or stainless steel plate.

14. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The air permeable flame retardant layer (3) is ceramic fiber cloth or asbestos; The thickness of the ceramic fiber cloth is 5 to 20 mm.

15. The explosion-proof box for the battery of the electric golf bag vehicle according to claim 1, characterized in that: The box cover (2) is provided with a handle (15).

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