阅读说明：本技术 一种具有独立泄爆通道的电池箱 (Battery box with independent explosion venting channel ) 是由 刘毅 雷政军 翟腾飞 郑高峰 张三学 于 2021-08-20 设计创作，主要内容包括：本发明提出了一种具有独立泄爆通道的电池箱,属于储能电池技术领域,其包括电池腔、吸附腔和气体收集管路,电池腔内设置有电池模组,电池模组通过气体收集管路与吸附腔连通。通过气体收集管路可有效的将电池热失控产生的可燃混合气体与助燃物(空气)进行隔离,防止可燃混合气体与助燃物(空气)混合发生二次爆燃产生危险。(The invention provides a battery box with an independent explosion venting channel, which belongs to the technical field of energy storage batteries and comprises a battery cavity, an adsorption cavity and a gas collecting pipeline, wherein a battery module is arranged in the battery cavity and is communicated with the adsorption cavity through the gas collecting pipeline. The combustible mixed gas generated by thermal runaway of the battery can be effectively isolated from the combustion supporter (air) through the gas collecting pipeline, so that the danger caused by secondary deflagration due to the mixing of the combustible mixed gas and the combustion supporter (air) is prevented.)

1. The utility model provides a battery box with independently let out and explode passageway which characterized in that, includes battery chamber, adsorbs chamber and gas collection pipeline, be provided with battery module in the battery chamber, battery module passes through gas collection pipeline and adsorbs the chamber intercommunication.

2. The battery box with the independent explosion venting channel according to claim 1, wherein the battery module comprises a plurality of groups of single batteries, the plurality of groups of single batteries are arranged in parallel, the single batteries are provided with explosion venting ports, and the gas collecting pipeline is communicated with the single batteries through the explosion venting ports on the single batteries.

3. The battery box with the independent explosion venting channel as claimed in claim 2, wherein the gas collecting pipeline comprises branch pipes and a vertical pipe, one branch pipe corresponds to each single battery, the vertical pipe is communicated with the explosion venting port on the single battery through the branch pipe, and the vertical pipe is communicated with the adsorption cavity.

4. The battery box with the independent explosion venting channel as claimed in claim 3, wherein the battery cavity comprises an inner cavity and an outer cavity arranged outside the inner cavity, the battery module is arranged in the inner cavity, the outer cavity is filled with a heat conducting material, and the heat conducting material can be one or a combination of two or more of heat conducting oil, rosin, heat conducting silica gel and graphite.

5. The battery box with independent explosion venting channels as claimed in claim 4, wherein the cavity wall of the inner cavity is provided with a heat dissipating fin, one end of the heat dissipating fin is disposed in the inner cavity, and the other end of the heat dissipating fin is disposed in the outer cavity.

6. The battery box with the independent explosion venting channel as recited in claim 5, wherein the battery box with the independent explosion venting channel further comprises an electrical cavity arranged between the battery cavity and the adsorption cavity, and the vertical pipe penetrates through the electrical cavity to be communicated with the adsorption cavity.

7. The battery box with the independent explosion venting channel as claimed in claim 6, wherein the adsorption cavity 3 is internally provided with a solid adsorption material, and the solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silica, porous glass, magnesium oxide and the like.

8. The battery box with independent explosion venting channels as claimed in claim 7, wherein a lower partition plate is disposed between the battery chamber and the electrical chamber, an upper partition plate is disposed between the electrical chamber and the adsorption chamber, through holes are disposed on both the lower partition plate and the upper partition plate, the vertical pipe sequentially penetrates through the through hole on the lower partition plate and the through hole on the upper partition plate to communicate with the adsorption chamber, and sealing gaskets are disposed at the connection positions of the through hole of the lower partition plate and the vertical pipe and at the connection positions of the through hole of the upper partition plate and the vertical pipe.

9. The battery box with the independent explosion venting channel as claimed in claim 8, wherein the bottom of the lower partition plate is provided with a downward extending annular boss, the top of the inner cavity is open, and the annular boss is clamped at the top opening of the inner cavity and seals the inner cavity; and the edge of the lower baffle plate extends to the cavity wall of the outer cavity and seals the outer cavity.

10. The battery box with the independent explosion venting channel as claimed in claim 9, wherein a vent pipe is arranged in the adsorption cavity, the vent pipe penetrates through the adsorption cavity, a vent mesh is arranged on the vent pipe, and the vertical pipe extends into a pipe cavity of the vent pipe and is communicated with the adsorption cavity through the vent mesh.

11. The battery box with the independent explosion venting channel as claimed in claim 10, wherein the top of the adsorption cavity is open, an adsorption cavity upper cover plate is arranged at the top opening of the adsorption cavity, and an exhaust pipe communicated with the adsorption cavity is arranged on the adsorption cavity upper cover plate.

12. The battery box with independent explosion venting channels of claim 11, wherein the walls of the electrical chambers are provided with vent holes.

13. The battery box with the independent explosion venting channel as claimed in claim 12, wherein a battery support is disposed in the inner cavity, a plurality of battery placing bins are disposed on the battery support in parallel, and a single battery is correspondingly placed in each battery placing bin.

14. The battery box with independent explosion venting channels as claimed in claim 13, wherein a plurality of battery boxes with independent explosion venting channels are arranged in parallel, and the adsorption cavities on the plurality of battery boxes with independent explosion venting channels are communicated with the collecting pipe through the exhaust pipe.

15. A battery case having an independent vent path as set forth in claim 14 wherein said header communicates with a gas collection means.

Technical Field

The invention belongs to the technical field of energy storage batteries, relates to a lithium battery technology, and particularly relates to a battery box with an independent explosion venting channel.

Background

Along with the wide application of lithium batteries in the field of new energy, the safety problem which is brought about therewith is also endless, and especially in the field of energy storage batteries, the risk of fire and explosion is increased along with the large installed capacity and the large amount of lithium batteries. The safety requirements for battery boxes are therefore also increasing. In reality, most battery boxes are made of metal, and the dustproof and waterproof level is high. When the battery in the box takes place the thermal runaway can produce a large amount of combustible gas, lead to pressure in the box to increase, when pressure is high to a certain degree, the battery box will have the risk that the explosion is fired. Under the general condition, a plurality of battery cells arranged in groups are placed in the battery box, a large amount of heat can be generated in the operation process of the battery box, the heat collection aggravation can also lead to thermal runaway of the battery, a large amount of combustible gas is generated, and a fire disaster is easily caused, so that the battery box is an important factor influencing the overall safety of the battery box.

The main consideration for solving the problem of safety of the battery box in the prior art is the design of a heat dissipation structure, such as an exhaust fan, a box body water cooling circulation, a box body provided with heat dissipation fins, a semiconductor refrigeration piece added and the like, and the consideration for explosion venting and pressure relief of the battery box is less. For example, patent No. CN202021981576.8 discloses a battery box with explosion venting function, in which a pressure relief hole, a spring and a pressure relief plate are provided in a box body, when a battery explodes, pressure generated by explosion inside the battery box is discharged into the pressure relief plate through the pressure relief hole, and the explosion pressure is gradually relieved through the buffering of the spring. The patent only considers releasing the pressure in the battery box, so that the damage to the structure of the battery box is reduced, and the released combustible gas has the risk of generating a secondary fire when meeting heat. Patent number is CN201920562154.8 discloses a new forms of energy battery box with let out and explode function, through setting up including letting out the explosion plate and letting out the explosion device that explodes the bolt to let out the explosion plate and box articulated, can play on the one hand and let out the explosion effect, on the other hand makes to let out the explosion plate can not break away from the box and the missile to other equipment departments when exploding. Meanwhile, the cross beam is in threaded connection with the explosion venting bolt, the screw rod is screwed out, a new metal gasket is replaced, and then the screw rod penetrates through the through hole of the explosion venting plate and is screwed with the cross beam, so that the explosion venting bolt can be repeatedly used. The technology only structurally solves the problems of safety of the battery box and repeated use of the explosion venting device in the explosion venting process, and further considers the prevention of secondary danger sources formed by the diffusion of combustible gas.

Through the analysis, how to effectively prevent the secondary danger of the battery caused by thermal runaway is a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

Aiming at the problem that the secondary danger of the battery is caused by thermal runaway, the invention provides a battery box with an independent explosion venting channel, and the specific technical scheme is as follows:

the utility model provides a battery box with independently let out and explode passageway, includes battery chamber, adsorbs chamber and gas collection pipeline, be provided with battery module in the battery chamber, battery module passes through gas collection pipeline and adsorbs the chamber intercommunication.

Further inject, the battery module includes multiunit battery, and multiunit battery sets up side by side, be provided with on the battery cell and let out and explode the mouth, gas collection pipeline lets out and explodes mouth and battery cell intercommunication through on the battery cell.

Further limiting, the gas collecting pipeline comprises branch pipes and a vertical pipe, each single battery corresponds to one branch pipe, the vertical pipe is communicated with an explosion venting port on each single battery through the branch pipe, and the vertical pipe is communicated with the adsorption cavity.

The battery module is arranged in the inner cavity, the outer cavity is filled with heat conducting materials, and the heat conducting materials can be one or a combination of two or more of heat conducting oil, rosin, heat conducting silica gel and graphite.

Further limiting, a heat dissipation fin is arranged on the cavity wall of the inner cavity, one end of the heat dissipation fin is arranged in the inner cavity, and the other end of the heat dissipation fin is arranged in the outer cavity.

Further define, the battery box that has independent explosion venting channel still includes the electric chamber that sets up between battery chamber and absorption chamber, the riser runs through electric chamber and adsorbs the chamber intercommunication.

Further, a solid adsorption material is arranged in the adsorption cavity, and the solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, magnesium oxide and the like.

Further inject, be provided with down the baffle between battery chamber and the electric chamber, be provided with the baffle between electric chamber and the absorption chamber, all be provided with the via hole down on baffle and the last baffle, the riser runs through via hole and absorption chamber intercommunication on the via hole on the baffle and the last baffle down in proper order, the via hole of baffle and the junction of riser and the via hole of last baffle all are provided with seal ring down.

Further limiting, the bottom of the lower partition plate is provided with a downward extending ring, the top of the inner cavity is provided with an opening, and the ring-shaped boss is clamped at the opening at the top of the inner cavity and seals the inner cavity; and the edge of the lower baffle plate extends to the cavity wall of the outer cavity and seals the outer cavity.

Further inject, be provided with the permeability cell in the absorption chamber, the permeability cell link up the absorption chamber, be provided with ventilative mesh on the permeability cell, the riser extends to in the lumen of permeability cell and through ventilative mesh and absorption chamber intercommunication.

Further inject, the top opening in absorption chamber, just the top opening in absorption chamber is provided with the absorption chamber upper cover plate, be provided with the blast pipe with absorption chamber intercommunication on the absorption chamber upper cover plate.

Further, a vent hole is formed in the wall of the electrical cavity.

Further inject, be provided with battery holder in the inner chamber, battery holder is last to be provided with a plurality of batteries side by side and to place the storehouse, and every battery places a corresponding battery cell in the storehouse.

Further, the battery boxes with the independent explosion venting channels are provided with a plurality of groups, the battery boxes with the independent explosion venting channels are arranged in parallel, and the adsorption cavities on the battery boxes with the independent explosion venting channels are communicated with the collecting pipe through the exhaust pipe.

Further defined, the header is in communication with a gas collection device.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the battery box with the independent explosion venting channel, the battery module in the battery cavity is communicated with the adsorption cavity through the gas collecting pipeline, so that combustible mixed gas generated by thermal runaway of the battery due to internal heat collection can be discharged out of the battery cavity in time, the combustible mixed gas cannot form pressure build-up in the battery cavity, and the damage to the structure of the battery box is prevented; meanwhile, combustible mixed gas generated by thermal runaway of the battery can be effectively isolated from combustion supporter (air), so that danger caused by secondary deflagration due to mixing of the combustible mixed gas and the combustion supporter (air) is prevented; combustible mixed gas enters the adsorption cavity through the gas collecting pipeline and is adsorbed by the solid adsorption material in the adsorption cavity to remove combustible components, and the combustible mixed gas can be safely discharged.

2. The gas collecting pipeline is communicated with the single battery through an explosion venting port on the single battery; when one battery monomer in the battery module is out of control due to thermal runaway so that electrolyte is decomposed to generate combustible mixed gas, the high-temperature combustible mixed gas is discharged to the adsorption cavity of the battery box along the gas collecting pipeline, and the high-temperature combustible mixed gas is not contacted with other battery monomers in the battery module in the whole process, so that the normal work of other battery monomers is not influenced; meanwhile, the whole process of discharging the high-temperature combustible mixed gas cannot be in contact with other high-temperature heat sources, and oxygen cannot be contacted, so that the fire risk is greatly reduced.

3. The battery cavity comprises an inner cavity and an outer cavity arranged outside the inner cavity, the battery module is arranged in the inner cavity, and the outer cavity is filled with heat conducting materials; can be with the heat transfer that the battery module during operation produced to the exocoel outside through the heat conduction material, carry out heat dissipation, protection to the battery module.

4. The wall of the inner cavity is provided with a heat dissipation fin, one end of the heat dissipation fin is arranged in the inner cavity, and the other end of the heat dissipation fin is arranged in the outer cavity. The temperature of the inner cavity can be rapidly transferred to the outer cavity through the radiating fins, so that the heat transfer area is increased, and the radiating efficiency is improved.

5. The battery box with the independent explosion venting channel also comprises an electrical cavity arranged between the battery cavity and the adsorption cavity, and a connection circuit or a control circuit component of the battery is conveniently arranged in the electrical cavity; be provided with the ventilation hole on the chamber wall in electric chamber, can give off the heat that circuit line or control circuit components and parts produced in the electric chamber through the ventilation hole.

6. Be provided with solid adsorption material in the adsorption cavity, can adsorb the combustible gas composition in the combustible gas mixture through solid adsorption material, discharge again after adsorbing combustible gas, can reduce the risk that combustible gas mixture takes place the postcombustion.

7. An annular boss is arranged at the bottom of the lower partition plate, and the annular boss is clamped at the opening at the top of the inner cavity and seals the inner cavity; the lower partition plate is convenient to be tightly matched and connected with the inner cavity through the annular boss, and the inner cavity is convenient to be sealed; meanwhile, the edge of the lower clapboard extends to the cavity wall of the outer cavity and seals the outer cavity, thereby facilitating the sealing of the outer cavity.

8. Be provided with the permeability cell in adsorbing the intracavity, the permeability cell link up adsorbs the chamber, is provided with ventilative mesh on the permeability cell, and the riser extends to in the lumen of permeability cell and through ventilative mesh and adsorption cavity intercommunication. The combustible mixed gas is uniformly dispersed in the solid adsorption material through the breathable meshes, so that the combustible gas components in the combustible mixed gas are more fully adsorbed by the solid adsorption material.

9. The upper cover plate of the adsorption cavity is provided with an exhaust pipe communicated with the adsorption cavity, and the gas which has adsorbed combustible components can be conveniently discharged or further collected through the exhaust pipe.

10. A plurality of battery placing bins are arranged on the battery bracket in parallel, and a single battery is correspondingly placed in each battery placing bin; the positions of the battery monomers can be fixed through the battery bracket.

11. The collecting pipe is communicated with the gas collecting device, and the gas which has adsorbed combustible gas components is collected in a centralized way, so that the environment pollution is prevented.

Drawings

FIG. 1 is a schematic structural diagram of a battery box with an independent explosion venting channel according to the present invention;

fig. 2 is an exploded view of the battery case of the present invention having an independent explosion venting channel;

fig. 3 is a longitudinal sectional view of a battery case having an independent explosion venting channel according to the present invention;

FIG. 4 is a schematic structural view of an upper cover of the adsorption chamber;

FIG. 5 is a schematic diagram of a battery chamber;

FIG. 6 is a schematic structural view of a battery holder;

FIG. 7 is a schematic view of the gas collection line;

fig. 8 is a schematic structural view of a battery module;

FIG. 9 is a schematic structural view of an upper partition plate;

FIG. 10 is a schematic view of the structure of the lower partition plate;

the device comprises a battery cavity 1, an electric cavity 2, an adsorption cavity 3, an adsorption cavity 4, an adsorption cavity upper cover plate 5, an upper partition plate 6, a lower partition plate 7, a battery bracket 8, a single battery 9, a gas collecting pipeline 11, an inner cavity 12, an outer cavity 12, a heat dissipation fin 13, a vent hole 21, an exhaust pipe 41, a vent pipe 42, an annular boss 61, a via hole 62, a branch pipe 91 and a vertical pipe 92.

Detailed Description

The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.

Examples

Referring to fig. 1 and 2, the battery box with independent explosion venting channel of the embodiment includes a battery cavity 1, an adsorption cavity 3 and a gas collecting pipeline 9, a battery module is disposed in the battery cavity 1, and an electrolyte cavity of the battery module is communicated with the adsorption cavity 3 through the gas collecting pipeline 9.

Preferably, the battery box with the independent explosion venting channel of the embodiment has a rectangular parallelepiped structure.

Referring to fig. 3, preferably, the battery module of this embodiment includes 12 groups of single batteries 8, 12 groups of single batteries 8 are divided into two rows, each row has 6 groups of single batteries 8, the single batteries 8 in each row are stacked in parallel, two rows of single batteries 8 are arranged oppositely, each single battery 8 is provided with an explosion venting port, and the gas collecting pipeline 9 is communicated with the electrolyte cavity of each single battery 8 through the explosion venting port on each single battery 8.

Preferably, the explosion vent of the present embodiment may be provided integrally with the battery cell 8, or may be provided separately from the battery cell 8.

It should be noted that the number of the single batteries 8 in the present embodiment may be 1 group, 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, 7 groups, 8 groups, or even more, and the specific number is matched according to the capacity requirement of each battery.

Referring to fig. 7 and 8, preferably, the gas collecting pipeline 9 of the present embodiment includes branch pipes 91 and a stand pipe 92, one branch pipe 91 corresponds to each cell 8, and the branch pipe 91 corresponds to a position corresponding to an explosion venting port on the cell 8, one end of the branch pipe 91 communicates with an electrolyte chamber of the cell 8 through the explosion venting port, the other end of the branch pipe 91 communicates with the stand pipe 92, and the stand pipe 92 communicates with the adsorption chamber 3.

Preferably, the stand pipe 92 of the present embodiment has two stand pipes 92, and 6 battery cells 8 in each column share one stand pipe 92.

Referring to fig. 5, preferably, the battery chamber 1 of the present embodiment includes an inner chamber 11 and an outer chamber 12 disposed outside the inner chamber, the outer chamber 12 is disposed outside a side portion of the inner chamber 11, excluding a bottom outside and a top outside, the battery module is disposed in the inner chamber 11, and the outer chamber 12 is filled with a heat conductive material.

Preferably, the heat conducting material in this embodiment may be one or a combination of two or more of heat conducting oil, rosin, heat conducting silica gel, and graphite.

Referring to fig. 5, preferably, be provided with heat dissipation fin 13 on the chamber wall of inner chamber in this embodiment, one end of heat dissipation fin 13 is placed in inner chamber 11, and the outer chamber is placed in to the other end of heat dissipation fin 13, in conducting the heat that battery monomer 8 produced in the inner chamber to outer chamber 12 through heat dissipation fin 13, on the heat conduction is conducted to the chamber wall of outer chamber to the heat conduction material in the rethread outer chamber 12, dispel the heat through the chamber wall of outer chamber and air convection.

Preferably, the battery box with the independent explosion venting channel is provided with an electrical cavity 2 between the battery cavity 1 and the adsorption cavity 3, and the vertical pipe 92 penetrates through the electrical cavity 2 to be communicated with the adsorption cavity 3; ventilation holes 21 are provided in both or four of the opposite side walls of the electrical cavity 2, and heat generated by the wires or the electrical control elements in the electrical cavity 2 is dissipated through the ventilation holes 21.

Preferably, the battery chamber 1, the electrical chamber 2, and the adsorption chamber 3 of the present embodiment are sequentially provided from bottom to top.

Preferably, the present embodiment is provided with a solid adsorbent material in the adsorption chamber 3.

Preferably, the solid adsorbent in the present embodiment is one or a combination of two or more of activated carbon, graphite, adsorbent resin, silica, porous glass, magnesium oxide, and the like.

Referring to fig. 9 and 10, preferably, a lower partition plate 6 is disposed between the battery cavity 1 and the electrical cavity 2, an upper partition plate 5 is disposed between the electrical cavity 2 and the adsorption cavity 3, two through holes 62 are disposed on the lower partition plate 6 and the upper partition plate 5, each through hole 62 corresponds to one vertical pipe 92, the vertical pipe 92 sequentially penetrates through the through hole 62 on the lower partition plate 6 and the through hole 62 on the upper partition plate 6 to communicate with the adsorption cavity 3, and the upper partition plate 5 extends to the cavity wall of the electrical cavity 2 and is tightly attached to the cavity wall of the electrical cavity 2.

Preferably, the present embodiment is provided with an elastic sealing gasket at the connection between the through hole of the upper partition plate 5 and the stand pipe 92, and an elastic sealing gasket at the connection between the through hole of the lower partition plate 6 and the stand pipe 92.

Preferably, the elastic sealing gasket of the present embodiment is an elastic rubber or plastic gasket or other mechanical member capable of its sealing action.

Preferably, in the present embodiment, the bottom of the lower partition plate 6 is provided with a downward extending annular boss 61, the top of the inner cavity 11 is open, and the annular boss 1 is clamped at the top opening of the inner cavity 1 and extends to the lower side of the top opening to seal the inner cavity 11; the edge of the lower baffle plate 6 extends to the cavity wall of the outer cavity 12 and is tightly attached to the cavity wall of the outer cavity 12, and the outer cavity 12 is sealed.

Referring to fig. 4, preferably, in the present embodiment, the adsorption cavity 3 is provided with two vent pipes 42, the two vent pipes 42 are arranged in parallel and arranged along the height direction in the adsorption cavity 3, the bottom of the vent pipe 42 is connected with the upper end surface of the upper partition plate 5, the top of the vent pipe 42 extends to the top of the adsorption cavity 3, the stand pipes 92 penetrate through the upper partition plate 5 and then are placed in the pipe cavity of the vent pipe 42, each stand pipe 92 corresponds to one stand pipe 92, the vent pipe 42 is provided with vent meshes, and the stand pipes 92 extend into the pipe cavity of the vent pipe 42 and are communicated with the adsorption cavity 3 through the vent meshes; the combustible mixed gas discharged from the stand pipe 92 is gathered in the vent pipe 42 and dispersed in the solid adsorption material through the vent meshes on the vent pipe 42, so that the combustible components in the combustible mixed gas are adsorbed.

Preferably, the top of the adsorption chamber 3 of the present embodiment is open, an adsorption chamber upper cover plate 4 is disposed at the top opening of the adsorption chamber 3, and an exhaust pipe 41 communicated with the adsorption chamber 3 is disposed on the adsorption chamber upper cover plate 4.

Preferably, a battery holder 7 is arranged in the inner cavity 11 of the present embodiment, referring to fig. 6, 12 battery placing bins are arranged on the battery holder 7, the 12 battery placing bins are divided into two rows, the two rows of battery placing bins are divided by a partition plate, and a single battery 8 is correspondingly arranged in each battery placing bin.

It should be noted that the number of the battery placing bins on the battery support 7 is one-to-one corresponding to the number of the battery cells 8.

Preferably, the battery compartment of the present embodiment may be movable, such as a drawer-type drawing movable chamber; the specification may be a fixed square grid.

Preferably, the battery boxes with independent explosion venting channels of the present embodiment may be 1, 2, 3, 4, 5, 6, or even more, and are arranged in parallel with each other, and the adsorption chamber 3 on each battery box with independent explosion venting channels is communicated with the collecting pipe through the exhaust pipe 41.

Preferably, the header of this embodiment is in communication with a gas collection means.

Preferably, the gas collection device of this embodiment may be a collection tank, collection box or other gas-tight vessel.

According to the battery box with the independent explosion venting channel, when one battery monomer 8 is out of control due to heat, inflammable substances and combustion-supporting substances in gas gathered in the battery monomer 8 are limited in the gas collecting pipeline 9 and are collected to the adsorption cavity through the gas collecting pipeline 9, flame can be prevented from directly contacting other battery monomers 8, rapid heat diffusion is avoided, the intensity of the out of control due to heat can be effectively reduced, chain reaction caused by ignition of other battery units is also avoided, meanwhile, combustible gas enters the adsorption cavity through the gas collecting pipeline for adsorption treatment, can be safely discharged after combustible components are removed, and the battery box accords with the environmental protection concept.

The invention has been described in further detail with reference to specific preferred embodiments thereof, and it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.