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 being locked on the box body, and an exhaust passage is reserved between the box body and the box cover. A sealing plate covering a box opening of the box body is arranged in the box cover; when the air pressure in the box body is increased, the sealing plate can be jacked up by the air pressure to be separated from the box body; and when the air pressure in the box body is reduced, the sealing plate resets and covers the box opening of the box body. According to the battery explosion-proof box, battery explosion can be limited in the battery explosion-proof box, explosives are prevented from being splashed out, fire disasters are prevented from being caused, and the safety performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery protection technical field, concretely relates to a kind of electric golf bag car battery explosion-proof box. BACKGROUND

[0002] With the development of modern science and technology, lithium ion battery, such as ternary lithium battery and lithium iron phosphate battery, can provide energy source for electronic devices at any time, and is widely used, such as electric bicycle, electric vehicle, electric golf cart, etc. Among them, golf bag car is used to carry golf clubs and other objects, and electric golf bag car powered by lithium battery can use electric drive instead of manual work, which is more convenient and labor-saving.

[0003] The existing lithium ion battery may trigger thermal runaway under the conditions of mechanical damage, thermal management failure, overcharge and overdischarge during handling, storage or charging. After the thermal runaway is triggered, a large amount of high-temperature combustible gas, dust and other substances will be generated, which may cause a risk of igniting the combustible material around the battery. The existing battery explosion-proof box has a relatively narrow air flow channel, so that the gas generated after the thermal runaway of part of the battery cannot be discharged in time, and then explosion and fire may occur, which is harmful to personal safety and property safety. SUMMARY

[0004] The utility model aims to provide a kind of electric golf bag car battery explosion-proof box to solve the problem that the existing battery explosion-proof box is easy to cause explosion.

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

[0006] The electric golf bag car battery explosion-proof box comprises a box body and a box cover that can be locked on the box body, and an exhaust passage is left between the box body and the box cover.

[0007] An end plate is arranged on the inner side of the box cover, and when the box cover is closed on the box body, the end plate can cover the box opening of the box body. The end plate can cover the box opening of the box body, but it does not mean that the end plate and the box opening are tightly sealed. Instead, the end plate can generally cover the box opening of the box body. When the box cover is closed and locked on the box body, it can play a role in isolating the inside and outside of the box body to a certain extent, but gas can still enter and exit the box body through the gap between the box opening and the end plate.

[0008] When the air pressure in the box body increases, the end plate moves towards the direction of the box cover to separate from the box body, further expanding the gap between the box opening and the end plate.

[0009] When the air pressure in the box body decreases, the end plate moves towards the direction of the box body until it covers the box opening of the box body, so that the gap between the box opening and the end plate is reduced.

[0010] Further, the box cover covers the box opening of the box body, and the exhaust passage is located between the inner wall of the box cover and the outer wall of the box body.

[0011] Further, an elastic element is arranged between the sealing plate and the box cover. The elastic element provides an initial pushing force to the sealing plate, so that the sealing plate can cover the box opening of the box body in a normal state, and the sealing plate can overcome the pushing force of the elastic element and move towards the box cover to expand the gap between the box opening and the sealing plate in the case of internal pressure rising.

[0012] The elastic element can be arranged at any position between the sealing plate and the box cover in any number, as long as the purpose of the sealing plate being able to cover the box opening of the box body in a normal state and the sealing plate being able to overcome the pushing force of the elastic element and move towards the box cover to expand the gap between the box opening and the sealing plate in the case of internal pressure rising can be achieved.

[0013] Generally, the elastic element arranged in a symmetrical manner can achieve better effect.

[0014] In one specific embodiment of the utility model, the elastic element is a spring.

[0015] In one specific embodiment of the utility model, four springs are arranged and located near the four corners of the sealing plate.

[0016] Preferably, the total elastic force of the four springs is 52N, when the internal pressure of the box body is greater than 52N, the spring is compressed, the sealing plate moves towards the box cover, and the gas is discharged from the gap between the sealing plate and the box body, so that the pressure in the box body does not continue to rise, thereby achieving the effect of pressure relief.

[0017] Further, a through hole is arranged on the sealing plate, a connecting column is arranged on the inner wall of the box cover and fitted in the through hole, and the sealing plate moves along the connecting column.

[0018] The spring is fitted on the connecting column.

[0019] A spring seat is arranged on the inner wall of the box cover and located at the periphery of the connecting column, and the spring is fitted in the spring seat.

[0020] Further, a connecting bolt is arranged on the inner side of the sealing plate and fitted in a threaded hole in the connecting column.

[0021] In another specific embodiment of the utility model, the elastic element is a spring sheet.

[0022] The spring sheet is arranged in four and located near the four corners of the sealing plate.

[0023] Further, the moving stroke range of the sealing plate is 1.5-4mm.

[0024] Further, the box body and the box cover are made of aluminum alloy.

[0025] Further, one side of the box cover is hingedly connected with the box body, and the other side opposite to the one side is provided with a locking pin assembly for locking the box cover and the box body.

[0026] Further, the outer wall of the box body is provided with a hinging seat, and the outer wall of the box cover is provided with a hinging plate rotationally connected with the hinging seat.

[0027] The hinging plate is integrally arranged with the box cover.

[0028] Further, the locking pin assembly comprises a lock seat arranged on the outer wall of the box body, a lock plate arranged on the outer wall of the box cover and matched with the lock seat, and a locking pin capable of passing through the lock seat and the lock plate to lock the lock seat and the lock plate; the arrangement of the locking pin assembly enables the box cover to be firmly closed on the box body in the locked state.

[0029] The lock plate is integrally arranged with the box cover.

[0030] Further, the lock plate is matched in a U-shaped slot of the lock seat, and the lock plate and the lock seat are provided with opposite lock holes on the two side walls thereof, and the locking pin is arranged on the inner wall of a U-shaped lock block.

[0031] The U-shaped lock block is moved towards the side where the locking pin is located, the locking pin is capable of exiting from the lock hole on the lock plate and entering the lock hole on one side wall of the lock seat.

[0032] The U-shaped lock block is moved towards the side away from the side where the locking pin is located, and the locking pin passes through the lock hole on the lock plate and the lock hole on at least one side wall of the lock seat.

[0033] Further, the box cover is provided with a charging interface, and a power line of the charging interface passes through the box cover and the sealing plate and extends into the box body.

[0034] Further, the box cover is provided with a handle to facilitate the user to carry or move the battery explosion-proof box.

[0035] The box cover is provided with a recess.

[0036] After the above technical scheme is adopted, the battery explosion-proof box has the following beneficial effects:

[0037] The electric golf bag vehicle battery can be taken out and placed in the electric golf bag vehicle battery explosion-proof box provided by the utility model when the electric golf bag vehicle needs to be charged or needs to be stored for a long time, when the battery explodes due to thermal runaway, the air pressure in the box body will instantaneously increase, the air pressure will lift the sealing plate, and the gas produced by the explosion will be discharged from the explosion-proof box through the exhaust channel, so that the battery explosion is limited in the battery explosion-proof box, explosion splashing out is avoided, a fire situation is prevented, and safety performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] The utility model will be further explained in connection with the drawings and embodiments.

[0039] Figure 1 It is the structure diagram of electric golf bag vehicle battery explosion-proof box first visual angle of the utility model embodiment 1;

[0040] Figure 2 It is the structure diagram of electric golf bag vehicle battery explosion-proof box second visual angle of the utility model embodiment 1;

[0041] Figure 3 It is the front view of electric golf bag vehicle battery explosion-proof box of the utility model embodiment 1;

[0042] Figure 4 It is Figure 3 The sectional view of A-A direction in;

[0043] Figure 5 It is Figure 4 The enlarged view of B part in;

[0044] Figure 6 It is the structure diagram of box cover part of electric golf bag vehicle battery explosion-proof box of the utility model embodiment 1;

[0045] Figure 7 It is the structure diagram of box body part of electric golf bag vehicle battery explosion-proof box of the utility model embodiment 1;

[0046] Figure 8 It is the structure diagram of sealing plate of electric golf bag vehicle battery explosion-proof box of the utility model embodiment 1;

[0047] In the drawing: box body 1, box cover 2, exhaust channel 3, sealing plate 4, spring 5, connecting column 6, through hole 7, spring seat 8, connecting bolt 9, hinged seat 10, hinged plate 11, lock seat 12, lock plate 13, lock pin 14, lock hole 15, U-shaped lock block 16, charging interface 17, power line 18, wire hole 19, handle 20, recess 21. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0049] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0050] Embodiment 1

[0051] As Figures 1-8 shown, an electric golf bag car battery explosion-proof box comprises a box body 1 and a box cover 2 capable of being locked on the box body 1, and an exhaust passage 3 is left between the box body 1 and the box cover 2; an inner side of the box cover 2 is provided with a sealing plate 4, when the box cover 2 is closed on the box body 1, the sealing plate 4 can cover a box opening of the box body 1; when the air pressure in the box body 1 increases, the sealing plate 4 moves towards the box cover 2 to separate from the box body 1; when the air pressure in the box body 1 decreases, the sealing plate 4 moves towards the box body 1 until covering the box opening of the box body 1.

[0052] When the battery in the box body 1 explodes, the air pressure will instantaneously increase, and the sealing plate 4 will be lifted by the air pressure to separate from the box body 1; at the explosion interval time or at the end, the air pressure in the box body 1 will gradually decrease, at this time, the sealing plate 4 will gradually reset until covering the box opening of the box body 1 again.

[0053] The battery capacity of the electric golf bag car is 180-400Wh, and the utility model is suitable for the battery explosion-proof of the capacity.

[0054] At the same time, the shape of the explosion-proof box is not limited to cuboid, cube and cylinder, and other shapes can be adjusted according to needs.

[0055] Preferably, the sealing plate 4 is selected from but not limited to steel plate material.

[0056] In the embodiment, the explosion-proof box adopts a vertical cuboid structure, and the box opening of the box body 1 is arranged at the top thereof, and the box cover 2 is closed on the top of the box body 1.

[0057] When the battery placed in the box body 1 explodes, in order to timely discharge the gas generated by the explosion, the box cover 2 covers the box opening of the box body 2, and the exhaust channel 3 is located between the inner wall of the box cover 2 and the outer wall of the box body 1.

[0058] In the embodiment, the box cover 2 is a square cover structure, which comprises a top plate and a surrounding plate, and a gap is left between the inner wall of the surrounding plate and the outer wall of the box body 1 to form the exhaust channel 3, and the square cover shape of the box cover 1 can play a waterproof role.

[0059] In the embodiment, the box body 1 and the box body 1 are connected by welding.

[0060] During non-explosion time or when the gas pressure in the box body 1 decreases, the elastic element is arranged between the sealing plate 4 and the box cover 2.

[0061] In the embodiment, the elastic element is a spring 5.

[0062] In order to ensure the stability of the movement of the sealing plate 4 and avoid the problem of deviation, the spring 5 is provided with four, and is respectively located near the four corners of the sealing plate 4.

[0063] In order to guide the movement of the sealing plate 4, the sealing plate 4 is provided with a through hole 7, the inner wall of the box cover 2 is provided with a connecting column 6 fitted in the through hole 7, and the sealing plate 4 moves along the connecting column 6.

[0064] The spring 5 is fitted on the connecting column 6, and at this time the spring 5 is located between the sealing plate 4 and the box cover 2, so as to realize the buffering of the movement of the sealing plate 4, and at the same time can assist the reset of the sealing plate 4.

[0065] In order to ensure the stability of the spring 5, the inner wall of the box cover 2 is provided with a spring seat 8 located outside the connecting column 6, and the spring 5 is fitted in the spring seat 8.

[0066] Specifically, the spring seat 8 is a ring structure surrounding the connecting column 6, and the spring 5 is sleeved on the connecting column 6 and the top end thereof is located in the spring seat 8.

[0067] In order to open the box cover 2 and synchronously open the sealing plate 4, in order to place the battery in the box body 1, in order to realize the connection of the box cover 2 and the sealing plate 4, the inner side of the sealing plate 4 is provided with a connecting bolt 9 fitted in the screw hole in the connecting column 6.

[0068] In order to timely discharge the gas generated by the explosion in the box body 1, the movement stroke range of the sealing plate 4 is 1.5-4mm.

[0069] Preferably, the movement stroke range of the sealing plate 4 is 2.5mm.

[0070] The battery generates high temperature when exploding, in order to ensure the strength of the explosion-proof box, the box body 1 and the box cover 2 are made of aluminum alloy.

[0071] In order to realize the connection and cooperation of the box cover 2 and the box body 1, one side of the box cover 2 is hinged with the box body 1, and the other side opposite to it is provided with a locking pin 14 assembly for locking the box cover 2 and the box body 1.

[0072] In order to realize the hinge connection of the box cover 2 and the box body 1, a hinge seat 10 is arranged on the outer wall of the box body 1, and a hinge plate 11 is arranged on the outer wall of the box cover 2 and is rotationally connected with the hinge seat 10.

[0073] The hinge seat 10 is fixed on the outer wall of the box body 1 by welding, and its two ends are hingedly connected with the two hinge plates 11 on the outer wall of the box cover 2, so that the opening and closing of the box cover 2 on the box body 1 can be realized by the hinge connection.

[0074] In order to improve the strength of the hinge plate 11, the hinge plate 11 is integrally arranged with the box cover 2.

[0075] In order to realize the locking of the box cover 2 and the box body 1, the locking pin 14 assembly includes a lock seat 12 arranged on the outer wall of the box body 1, a lock plate 13 arranged on the outer wall of the box cover 2 and matched with the lock seat 12, and a locking pin 14 capable of passing through the lock seat 12 and the lock plate 13 to lock them.

[0076] The lock plate 13, the lock seat 12 and the locking pin 14 are matched in this way, so that the thickness of the lock plate 13 can be increased as needed to avoid the problem of breakage of the lock plate 13 due to the explosion impact of the battery.

[0077] In order to improve the strength of the lock plate 13, the lock plate 13 is integrally arranged with the box cover 2.

[0078] Specifically, the lock plate 13 is matched in the U-shaped groove of the lock seat 12, and the lock plate 13 and the two side walls of the lock seat 12 are provided with opposite lock holes 15, and the locking pin 14 is arranged on the inner wall of a U-shaped lock block 16.

[0079] In this embodiment, the locking pin 14 is arranged on the right inner wall of the U-shaped lock block 16.

[0080] Moving the U-shaped lock block 16 towards the side where the locking pin 14 is located, the locking pin 14 can exit from the lock hole 15 on the lock plate 13 and be located in the lock hole 15 on one side wall of the lock seat 12.

[0081] When the U-shaped lock block 16 is moved to the rightmost position (i.e. the left inner wall of the U-shaped lock block 16 abuts against the left side of the lock seat 12), the lock pin 14 can be withdrawn from the lock hole 15 on the left wall of the U-shaped lock block 16 and the lock hole 15 of the lock plate 13, and only located in the lock hole 15 on the right wall of the lock seat 12, so that the lock plate 13 and the lock seat 12 can be separated, and the box cover 2 can be opened.

[0082] In this way, the U-shaped lock block 16 can be directly fixed on the lock seat 12, i.e. the U-shaped lock block 16 will not be separated from the lock seat 12, so that the problem of losing the U-shaped lock block 16 can be avoided.

[0083] When the U-shaped lock block 16 is moved to the rightmost position (i.e. the left inner wall of the U-shaped lock block 16 abuts against the left side of the lock seat 12), the lock pin 14 can be withdrawn from the lock hole 15 on the left wall of the U-shaped lock block 16 and the lock hole 15 of the lock plate 13, and only located in the lock hole 15 on the right wall of the lock seat 12, so that the lock plate 13 and the lock seat 12 can be separated, and the box cover 2 can be opened.

[0084] In this way, the U-shaped lock block 16 can be directly fixed on the lock seat 12, i.e. the U-shaped lock block 16 will not be separated from the lock seat 12, so that the problem of losing the U-shaped lock block 16 can be avoided.

[0085] In order to directly charge the battery when the battery is placed in the box body 1, the charging interface 17 is arranged on the box cover 2, and the power line 18 of the charging interface 17 passes through the box cover 2 and the sealing plate 4 and extends into the box body 1.

[0086] Preferably, the sealing plate 4 is provided with a wire passing hole 19, and the power line 18 of the charging interface 17 extends into the box body 1 through the wire passing hole 19, so as to be connected with the battery in the box body 1.

[0087] In order to facilitate the movement of the explosion-proof box, the handle 20 is arranged on the box cover 2.

[0088] In order to facilitate the pasting of the use precautions of the explosion-proof box and improve the safety in use, the recess 21 is arranged on the box cover 2.

[0089] The sticker with the use precautions is directly pasted in the recess 21, so that the wear of the sticker can be reduced, and the safe use of the explosion-proof box can be ensured.

[0090] The explosion-proof box of the present embodiment can be used for placing the battery of the electric golf cart, and the battery can be placed in the explosion-proof box when storing, transporting or charging, so as to avoid dangerous situations such as explosion and fire.

[0091] When the battery is stored, placed, carried or charged, it is placed in the explosion-proof box, and the box cover 22 is locked with the box body 11, and in this process, when the battery explodes, the air pressure in the explosion-proof box will instantaneously rise, the air pressure will lift the sealing plate 4 upward (that is, towards the direction of the box cover 2) and compress the spring 5, at this time the spring 5 will have a buffering effect on the sealing plate 4, so that the sealing plate 4 is separated from the box body 1, and the gas can be discharged to the outside of the explosion-proof box through the box opening and the exhaust passage 3, so that the explosion range can be limited in the explosion-proof box, thereby effectively avoiding the random splashing of the explosive and avoiding the situation of causing fire, etc., and improving the safety of the battery storage, placement, carrying or charging.

[0092] Since the battery is composed of multiple battery cells connected in series, the explosion of the battery cell is mostly intermittent rather than continuous, and when the explosion interval occurs, the air pressure in the box body 1 will decrease, and at this time the spring 5 will push the sealing plate 4 to cover the box opening of the box body 1 again to close it, so as to avoid the external air entering the box body 1 to cause a fire.

[0093] Embodiment 2

[0094] On the basis of embodiment 1, the embodiment also provides an explosion-proof box for an electric golf cart battery, which has a structure substantially the same as that of embodiment 1, and the difference lies in that:

[0095] The elastic element is a spring.

[0096] In this embodiment, the spring has the same effect as the spring in embodiment 1, that is, it realizes the buffering of the sealing plate 4 and assists the resetting of the sealing plate 4.

[0097] The spring can be selected from, but not limited to, a V-shaped or Z-shaped spring, and its two ends can be fixed with the sealing plate 4 and the box cover 2 by welding or screw connection.

[0098] In this embodiment, the spring is provided with four, and is located near the four corners of the sealing plate 4. In this way, the spring is arranged, which can ensure the stability of the sealing plate 4 when moving and avoid the problem of deviation.

[0099] The selection of the elastic element is not limited to the spring 5 or the spring, and any part with elasticity and buffering effect can be selected.

[0100] The explosion-proof box suitable for the electric golf cart battery with the above-mentioned electric quantity range of 180-400Wh is within the scope of the battery explosion-proof box protected by the utility model, regardless of the shape.

[0101] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An electric golf bag car battery explosion-proof box, characterized in that, The utility model relates to a box, which comprises a box body (1) and a box cover (2) capable of being locked on the box body (1), and an exhaust passage (3) is left between the box body (1) and the box cover (2); An inner side of the box cover (2) is provided with a sealing plate (4), and when the box cover (2) is closed on the box body (1), the sealing plate (4) can cover a box opening of the box body (1); When the air pressure in the box body (1) increases, the sealing plate (4) moves towards the box cover (2) to separate from the box body (1); When the air pressure in the box body (1) decreases, the sealing plate (4) moves towards the box body (1) until covering the box opening of the box body (1).

2. The battery explosion-proof case for electric golf cart according to claim 1, wherein, The box cover (2) covers the box opening of the box body (1), and the exhaust passage (3) is located between the inner wall of the box cover (2) and the outer wall of the box body (1).

3. The battery explosion-proof case for electric golf cart according to claim 1, wherein, An elastic element is arranged between the sealing plate (4) and the box cover (2).

4. The battery explosion-proof case for electric golf cart according to claim 3, wherein, The elastic element is a spring (5).

5. The battery explosion-proof case for electric golf cart according to claim 4, wherein, Four springs (5) are arranged near four corners of the sealing plate (4).

6. The electric golf bag cart battery explosion-proof box according to claim 4, characterized in that, A through hole (7) is arranged on the sealing plate (4), an inner wall of the box cover (2) is provided with a connecting column (6) fitted in the through hole (7), and the sealing plate (4) moves along the connecting column (6); The spring (5) is fitted on the connecting column (6); An inner wall of the box cover (2) is provided with a spring seat (8) located at the periphery of the connecting column (6), and the spring (5) is fitted in the spring seat (8).

7. The electric golf cart battery explosion-proof box of claim 6, wherein, An inner side of the sealing plate (4) is provided with a connecting bolt (9) fitted in a threaded hole in the connecting column (6).

8. The battery explosion-proof case for electric golf cart according to claim 3, wherein, The elastic element is a spring piece; Four spring pieces are arranged near four corners of the sealing plate (4).

9. The battery explosion-proof case for electric golf cart according to claim 1, wherein, The moving stroke range of the sealing plate (4) is 1.5-4 mm.

10. The battery explosion-proof case for electric golf cart according to claim 1, wherein, The box body (1) and the box cover (2) are made of aluminum alloy.

11. The battery explosion-proof case for electric golf cart according to claim 1, wherein, One side of the box cover (2) is hinged to the box body (1), and the other side opposite to the one side is provided with a lock pin (14) assembly for locking the box cover (2) and the box body (1).

12. The electric golf cart battery explosion-proof box of claim 11, wherein, An outer wall of the box body (1) is provided with a hinge seat (10), and an outer wall of the box cover (2) is provided with a hinge plate (11) rotationally connected with the hinge seat (10). The hinge plate (11) is integrally arranged with the box cover (2).

13. The electric golf cart battery explosion-proof box of claim 11, wherein, The lock pin assembly comprises a lock seat (12) arranged on an outer wall of the box body (1), a lock plate (13) arranged on an outer wall of the box cover (2) and matched with the lock seat (12), and a lock pin (14) capable of passing through the lock seat (12) and the lock plate (13) to lock the lock seat (12) and the lock plate (13). The lock plate (13) is integrally arranged with the box cover (2).

14. The electric golf cart battery explosion-proof box of claim 13, wherein, The lock plate (13) is matched in a U-shaped groove of the lock seat (12), and opposite lock holes (15) are arranged on two side walls of the lock plate (13) and the lock seat (12), and the lock pin (14) is arranged on an inner wall of a U-shaped lock block (16). Moving the U-shaped lock block (16) towards the side where the lock pin (14) is located, the lock pin (14) can exit the lock hole (15) on the lock plate (13) and be located in the lock hole (15) on one side wall of the lock seat (12); Moving the U-shaped lock block (16) towards the side away from the side where the lock pin (14) is located, the lock pin (14) passes through the lock hole (15) on the lock plate (13) and the lock hole (15) on at least one side wall of the lock seat (12).

15. The electric golf cart battery explosion-proof box of claim 1, wherein, A charging interface (17) is arranged on the box cover (2), and a power line (18) of the charging interface (17) passes through the box cover (2) and the sealing plate (4) and extends into the box body (1).

16. The electric golf cart battery explosion-proof box of claim 1, wherein, A handle (20) is arranged on the box cover (2); A recess (21) is arranged on the box cover (2).

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