CN218334183U

CN218334183U - Explosion-proof type lithium electricity power supply box

Info

Publication number: CN218334183U
Application number: CN202221868298.4U
Authority: CN
Inventors: 单颖会; 吴涛; 林双; 战祥连; 张兵; 李振铎; 王英健; 王超
Original assignee: Zibo Torch Energy Co ltd
Current assignee: Zibo Torch Energy Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2023-01-17
Anticipated expiration: 2032-07-19

Abstract

The utility model provides an explosion-proof type lithium electricity power supply box belongs to energy storage technical field. The explosion-proof power supply box comprises a power supply box body, wherein an explosion-proof opening is formed in the power supply box body, and an elastic gasket, an explosion-proof sheet and a metal pressing sheet are sequentially arranged on the explosion-proof opening; the elastic gasket, the explosion-proof sheet and the metal pressing sheet are combined together through the fixing bolt assembly. The utility model discloses under the prerequisite that does not influence the whole dustproof and waterproof function of power supply box, make it possess explosion-proof performance, in case when the lithium cell of incasement takes place to burn promptly, the atmospheric pressure that the burning produced breaks the explosion-proof piece very easily and lets out to effectively avoid the power supply box to explode. The utility model discloses explosion-proof ability reinforce, simple structure, simple to operate have solved under the prior art lithium electricity power supply box can take place the lithium cell burning and lead to the problem of box explosion when inside electric core thermal runaway to effectively protect operating personnel's personal safety, and reduce because the box scraps the wasting of resources that causes.

Description

Explosion-proof type lithium electricity power supply box

Technical Field

The utility model relates to an energy storage technical field specifically is an explosion-proof type lithium electricity power supply box.

Background

At present, the lithium battery power supply is widely applied in various fields in the market, but the lithium battery power supply has a great potential safety hazard in the using process. The specific meaning can make the burning of power supply box part or whole lithium cell when certain electric core takes place thermal runaway in the power, and violent burning in the confined space can cause the rapid inflation of atmospheric pressure to probably lead to the power supply box to explode. If the aforesaid explosion condition takes place in the in-service use, can seriously threaten near operating personnel's personal safety on the one hand, the huge impact force of on the other hand explosion can destroy the box, leads to the box can't recycle to cause the wasting of resources.

In the prior art, some engineers consider the potential safety hazard and add an air pressure balance valve on the lithium battery power box. However, it has been found that the passage of the air pressure balancing valve is too narrow to prevent explosion in extreme cases. Therefore, it is necessary to design a power box capable of effectively preventing explosion. In addition, because the tunnel locomotive field is used lithium electricity power more, the lithium cell is higher to the requirement of environment but the tunnel internal environment humidity is big, so the structural design of power supply box often uses higher dustproof waterproof ability as one of the keys, consequently need pay attention to not destroy the original structure and the leakproofness of box when increasing explosion-proof function to the power supply box.

Disclosure of Invention

An object of the utility model is to provide an explosion-proof type lithium electricity power supply box realizes stronger explosion-proof performance to it under the prerequisite of not destroying the box original structure and leakproofness to lithium electricity power supply box can take place the lithium cell burning and lead to the problem of box explosion when inside electric core thermal runaway under the solution prior art, thereby effectively protects operating personnel's personal safety, and reduces because the box scraps the wasting of resources that causes.

The utility model discloses an adopt following technical scheme to realize:

an explosion-proof lithium battery power box comprises a power box body, wherein an explosion-proof opening is formed in the power box body, and an elastic gasket, an explosion-proof sheet and a metal pressing sheet are sequentially arranged on the explosion-proof opening; the elastic gasket, the explosion-proof sheet and the metal pressing sheet are combined together through the fixing bolt assembly. The explosion-proof lithium battery power box does not damage the original structure of the box body, and a pressure relief outlet is provided for air pressure expansion caused by lithium battery combustion through an explosion-proof port reserved on the box body; and the explosion-proof opening is sealed through the explosion-proof sheet, and the sealing effect is further ensured in an all-round way through the elastic gasket and the metal pressing sheet. Therefore the utility model discloses under the prerequisite that does not influence the whole dustproof and waterproof function of power supply box, make it possess explosion-proof performance, in case when the lithium cell of incasement takes place to burn promptly, the atmospheric pressure that the burning produced breaks the explosion-proof piece very easily and lets out to effectively avoid the power supply box to explode. On the basis, the structure of the power box without explosion cannot be damaged, so that the power box can be repeatedly used; and a new batch of explosion-proof sheets, elastic gaskets and metal pressing sheets can be installed on the box body again.

Furthermore, a plurality of screw holes are arranged around the periphery of the explosion-proof opening; and the elastic gasket, the explosion-proof sheet and the metal pressing sheet are all provided with through holes corresponding to the thread holes. The screw holes on the periphery of the explosion-proof opening correspond to the through holes on the elastic gasket, the explosion-proof sheet and the metal pressing sheet one to one, and the screw holes and the through holes are used for being matched with the fixing bolt assembly, so that the combination of all the parts is realized. And the structure and the principle of the combined mode are simple, and any mechanism does not need to be operated manually during unlocking, so that the effect of releasing the explosion-proof sheet by air pressure burst can be realized, and the explosion-proof effect is realized effectively.

Furthermore, the explosion-proof opening is arranged at any position on a side plate of the power box body, which is far away from the cockpit, and the area of the explosion-proof opening accounts for 1% -10% of the area of the side plate. The cockpit refers to a position close to related workers in a tunnel locomotive mentioned in the background art or other scenes applying the lithium electric power box. The explosion-proof opening is used for pressure relief, and the elastic gasket, the explosion-proof sheet, the metal pressing sheet and the fixing bolt assembly can fly out uncontrollably at the moment when the air pressure breaks the explosion-proof opening, so that the safety of personnel is ensured to the maximum extent, and the explosion-proof opening is positioned at one side far away from the cockpit. In addition, the shape of the explosion-proof opening is not limited, and the explosion-proof opening can be designed into a corresponding reasonable shape according to the use requirement.

Further, the elastic gasket is of a hollow frame structure; the shape and the size of the inner cavity of the elastic gasket are the same as those of the explosion-proof opening, and a through hole is formed in the frame of the elastic gasket. The elastic gasket plays a role in sealing the periphery of the explosion-proof opening.

Furthermore, the hardness of the elastic gasket is 30A-70A, and the thickness of the elastic gasket is 1 mm-5 mm.

Further, the explosion-proof sheet is of a solid sheet structure; the whole shape and the overall dimension of the explosion-proof sheet are the same as those of the elastic gasket, and through holes are arranged on the periphery of the explosion-proof sheet. The function of explosion-proof piece is to cover explosion-proof mouthful, realizes the whole sealing performance of lithium cell power supply box.

Furthermore, the explosion-proof sheet is a soft metal sheet or a soft plastic sheet, and the thickness of the explosion-proof sheet is 0.5 mm-5 mm. When the air pressure in the box body rises suddenly to a certain degree, the rushing air pressure can easily cause the explosion-proof sheet to break, so that the dangerous situation of splashing of fragments is caused, and therefore, the explosion-proof sheet can be a soft metal sheet (such as aluminum, lead and the like) or a plastic sheet (such as PVC, PE, PTFE and the like).

Further, the shape and the size of the metal pressing sheet are the same as those of the elastic gasket; the frame of the metal pressing sheet is provided with a through hole. The metal pressing sheet has higher mechanical strength and is used for compacting peripheral components of the explosion-proof opening to realize further sealing; the metal pressing sheet is made of hard metal (such as stainless steel, carbon steel and the like).

Furthermore, the thickness of the metal pressing sheet is 1 mm-10 mm.

Furthermore, the fixing bolt assembly comprises a bolt, a metal flat pad is arranged on a screw rod of the bolt, and a metal elastic pad is arranged between the metal flat pad and the head of the bolt. The fixing bolt assembly is used for fixing the elastic gasket, the explosion-proof sheet and the metal pressing sheet on the box body to form a whole with the box body. The fixed bolt assembly comprises a bolt and is also provided with a metal flat pad and a metal elastic pad; when the anti-explosion component is used, the metal elastic pad is arranged between the metal flat pad and the bolt head, the metal flat pad is used for compressing the anti-explosion component, and the metal elastic pad is used for supplementing the elastic loss of the elastic gasket, so that the anti-explosion component is wholly subjected to continuous pressure, and the sealing performance is guaranteed.

The utility model discloses the beneficial effect who realizes is:

through reserve explosion-proof mouthful on power supply box to seal explosion-proof mouthful through elastic gasket, explosion-proof piece and sheetmetal, realized the automatic pressure release export on the box. When the battery in the power box burns due to thermal runaway, the expanding air pressure can easily burst the explosion-proof sheet to realize directional pressure relief, thereby effectively avoiding the explosion of the power box. Compared with the prior art, the utility model realizes stronger explosion-proof performance of the power box and ensures the safety of related personnel on the premise of not destroying the structure and good sealing performance of the power box; and the power box is not damaged due to explosion, so that the power box can be used for many times, and resources are saved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic diagram of the position of the explosion-proof port on the power box body;

FIG. 4 is a schematic view of the construction of the elastomeric gasket;

FIG. 5 is a schematic view of a metal pellet;

FIG. 6 is a schematic structural view of the rupture disk;

FIG. 7 is a schematic view of the construction of the fixing bolt assembly;

in the figure: 1. a power box body; 2. an explosion-proof port; 3. an elastic pad; 4. an explosion-proof sheet; 5. metal tabletting; 6. a fixing bolt assembly; 7. a silk hole; 8. a through hole; 61. a bolt; 62. a metal flat pad; 63. a metal spring pad.

Detailed Description

For the purpose of clarity, the embodiments of the present invention will be further described with reference to the accompanying drawings:

referring to fig. 1 to 7, the embodiment provides an explosion-proof lithium battery power box suitable for 537.6V and 480Ah traction locomotives.

The explosion-proof lithium battery power box comprises a power box body 1, wherein the outline dimension of the power box body 1 is 3900mm multiplied by 1350mm multiplied by 900mm, the material of the power box body is Q235 carbon steel, the wall thickness of the power box body is 20mm, and the thickness of a box cover is 6mm; a rectangular explosion-proof opening 2 is formed in the center of a side plate of a power box body 1, which is far away from one side (namely M in figure 1) of a cockpit, wherein the size of the side plate is 1350mm multiplied by 900mm, and the size of the explosion-proof opening is 200mm multiplied by 200mm; a plurality of M8 wire holes 7 are uniformly formed in the periphery of the explosion-proof opening 2, the vertical distance from the center point of each wire hole 7 to the edge line of the corresponding explosion-proof opening 2 is 25mm, and the distance between every two wire holes 7 is 62.5mm.

The explosion-proof opening 2 is provided with an elastic gasket 3 with a hollow frame structure, the elastic gasket 3 is made of rubber, the number is 1, the thickness is 2mm, the hardness is 50A, the external dimension is 278mm multiplied by 278mm, and the size of an inner cavity is 200mm multiplied by 200mm; a plurality of elastic gaskets 3 are evenly arranged on the frame

The through holes 8 correspond to the thread holes 7 arranged around the periphery of the explosion-proof opening 2 in a one-to-one mode.

The elastic gasket 3 is provided with explosion-proof sheets 4, the explosion-proof sheets 4 are made of polytetrafluoroethylene thin plates, the number of the explosion-proof sheets is 1, the thickness of the explosion-proof sheets is 2mm, and the overall dimension of the explosion-proof sheets is 278mm multiplied by 278mm; the periphery of the explosion-proof sheet 4 is evenly provided with a plurality of

And the through holes 8 correspond to the screw holes 7 arranged around the periphery of the explosion-proof opening 2 one by one.

The explosion-proof sheet 4 is provided with a metal pressing sheet 5, and the shape and the size of the metal pressing sheet 5 are completely consistent with those of the elastic gasket 3; the metal pressing sheets 5 are made of stainless steel materials, the number is 1, the thickness is 3mm, the external dimension is 278mm multiplied by 278mm, and the inner cavity dimension is 200mm multiplied by 200mm; a plurality of metal pressing sheets 5 are uniformly arranged on the periphery

The elastic gasket 3, the explosion-proof sheet 4 and the metal pressing sheet 5 are combined together through a fixing bolt assembly 6 and connected to a screw hole 7 formed around the periphery of the explosion-proof opening 2. Fixing bolt subassembly 6 is stainless steel, and fixing bolt subassembly 6 includes bolt 61, is equipped with the flat pad 62 of metal on bolt 61's the screw rod, is equipped with metal bullet pad 63 between bolt 61's head and the flat pad 62 of metal, and the size of the flat pad 62 of metal and metal bullet pad 63 is M8X 20mm.

The mounting method among the above-mentioned each part is as follows: firstly, coating a layer of glue on the plane of one side of an elastic gasket 3, and attaching the elastic gasket 3 to the periphery of an explosion-proof opening 2 to enable through holes 8 in the elastic gasket 3 to be aligned with screw holes 7 on the periphery of the explosion-proof opening 2 one by one; then, a layer of glue is also coated on one surface of the elastic gasket 3 facing an operator, then the explosion-proof sheet 3 is attached, and the through holes 8 on the two parts are required to be aligned during attachment; and finally, placing the metal pressing sheet 5 on the outermost layer of the explosion-proof assembly, combining all the parts together through the fixing bolt assembly 6, and locking the bolt. Wherein, the fixing bolt assembly 6 is used, a metal elastic pad 63 and a metal flat pad 62 are sleeved on the bolt 61 in sequence.

The utility model discloses a theory of operation as follows:

the explosion-proof port 2 is used for pressure relief; the elastic gasket 3 plays a role in sealing the periphery of the explosion-proof opening 2; the explosion-proof sheet 4 is used for covering the explosion-proof port 2, so that the integral sealing performance of the lithium battery power box is realized; the metal pressing sheet 5 has higher mechanical strength and is used for compacting the peripheral components of the explosion-proof opening 2 to realize further sealing; the fixing bolt assembly 6 is used for fixing the elastic gasket 3, the explosion-proof sheet 4 and the metal pressing sheet 5 on the box body to form a whole with the box body.

In conclusion, the explosion-proof lithium battery power box provides a pressure relief outlet for air pressure expansion caused by lithium battery combustion through the explosion-proof port 2 reserved on the box body; and the explosion-proof opening 2 is sealed through the explosion-proof sheet 4, and the sealing effect is further guaranteed in all directions through the elastic gasket 3 and the metal pressing sheet 5. When the lithium battery in the box burns, the air pressure generated by burning can easily burst the explosion-proof sheet 2 to be discharged, thereby effectively avoiding the explosion of the power box. On this basis, the power supply box 1 structure that does not explode can not destroyed, therefore this power supply box repeatedly usable, can install new batch explosion-proof piece 4, elastic gasket 2, metal preforming 5 and fixing bolt subassembly 6 on to the box to form explosion-proof type lithium electricity power supply box again and put into use.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims

1. The utility model provides an explosion-proof type lithium electricity power supply box, includes power supply box (1), its characterized in that: an explosion-proof opening (2) is formed in the power box body (1), and an elastic gasket (3), an explosion-proof sheet (4) and a metal pressing sheet (5) are sequentially arranged on the explosion-proof opening (2); the elastic gasket (3), the explosion-proof sheet (4) and the metal pressing sheet (5) are combined together through a fixing bolt assembly (6).

2. The explosion-proof lithium battery power supply box of claim 1, characterized in that: a plurality of wire holes (7) are arranged around the periphery of the explosion-proof opening (2); and the elastic gasket (3), the explosion-proof sheet (4) and the metal pressing sheet (5) are all provided with through holes (8) corresponding to the thread holes (7).

3. The explosion-proof lithium battery power supply box of claim 1, characterized in that: the explosion-proof opening (2) is arranged at any position on a side plate of the power box body (1) far away from the cockpit, and the area of the explosion-proof opening (2) accounts for 1% -10% of the area of the side plate.

4. The explosion-proof lithium battery power supply box of claim 1, characterized in that: the elastic gasket (3) is of a hollow frame structure; the shape and the size of the inner cavity of the elastic gasket (3) are the same as those of the explosion-proof port (2), and a through hole (8) is formed in the frame of the elastic gasket (3).

5. An explosion-proof lithium power supply box according to claim 4, characterized in that: the hardness of the elastic gasket (3) is 30A-70A, and the thickness is 1 mm-5 mm.

6. The explosion-proof lithium battery power supply box of claim 1, characterized in that: the explosion-proof sheet (4) is of a solid sheet structure; the overall shape and the overall dimension of the explosion-proof sheet (4) are the same as those of the elastic gasket (3), and through holes (8) are formed in the periphery of the explosion-proof sheet (4).

7. The explosion-proof lithium battery power supply box of claim 6, characterized in that: the explosion-proof sheet (4) is a soft metal sheet or a soft plastic sheet, and the thickness of the explosion-proof sheet (4) is 0.5 mm-5 mm.

8. The explosion-proof lithium battery power supply box according to claim 1, characterized in that: the shape and the size of the metal pressing sheet (5) are the same as those of the elastic gasket (3); the frame of the metal pressing sheet (5) is provided with a through hole (8).

9. An explosion-proof lithium electric power box according to claim 8, characterized in that: the thickness of the metal pressing sheet (5) is 1 mm-10 mm.

10. The explosion-proof lithium battery power supply box according to claim 1, characterized in that: the fixing bolt assembly (6) comprises a bolt (61), a metal flat pad (62) is arranged on a screw rod of the bolt (61), and a metal elastic pad (63) is arranged between the metal flat pad (62) and the head of the bolt (61).