CN110767856A

CN110767856A - Battery case for new energy automobile

Info

Publication number: CN110767856A
Application number: CN201911049954.0A
Authority: CN
Inventors: 吴正明
Original assignee: Changzhou Vocational Institute of Light Industry
Current assignee: Changzhou Vocational Institute of Light Industry
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-07

Abstract

The invention discloses a battery box for a new energy automobile, which comprises a box body, a box cover, a hasp, a jacking unit, a fire extinguishing unit and a pressing unit, wherein the box cover is arranged on the upper part of the box body, the rear part of the box cover is hinged with the rear part of the box body through a hinge, the hasp is fixedly arranged at the junction of the front part of the box body and the front part of the box cover, the jacking unit is arranged in the middle of the box body, the fire extinguishing unit is arranged at the central position of the upper part of the inner bottom wall of the box body, and the pressing unit. The invention can realize the purpose of quickly disassembling and assembling the battery, thereby effectively improving the practicability of the battery, having the function of automatically extinguishing fire when the fire breaks out in the box body, having better safety performance, and effectively ensuring the safety of vehicles and personnel on the vehicles, and the protective layer prepared on the inner surface of the box body can effectively increase the performances of corrosion resistance, fire prevention, shock absorption and ageing resistance of the box body, thereby effectively protecting the battery arranged in the box body.

Description

Battery case for new energy automobile

Technical Field

The invention relates to the technical field of new energy, in particular to a battery box for a new energy automobile.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure.

The battery that current new energy automobile used generally all places in the battery box, and the current chinese patent that application number is CN201810425285.1 discloses a new energy battery case, and it includes the box, the left end fixed mounting at box top has left top box, the bottom swing joint of the inner chamber of left top box has the curved bar, and the bottom fixedly connected with roof of curved bar, the pull rod has been cup jointed in the outside activity of left top box, the quantity of pull rod is two, two the central symmetry about left top box of pull rod, two the one end of pull rod runs through left top box respectively and extends to the outside and the fixedly connected with of left top box and draws the ball. It drives the threaded rod rotation through twisting the turning block, makes grip block and branch separation, pulls again and draws the ball, utilizes the pull rod, cooperation between baffle and the rigid spring makes pull rod and spacing groove separation, removes the fixed of roof, then upwards stimulates the handle, tears the roof from the box, the staff of being convenient for maintains or changes the battery of box inside, the practicality of this battery case has been improved, it still possesses when the abnormal conditions appears in the battery case simultaneously, can report to the police the advantage that lets navigating mate know very first time.

However, in practical use, the above-mentioned manner of assembling and disassembling the battery is still not convenient enough, and the practicability still needs to be improved; secondly, with the technical progress of new energy automobiles, the existing new energy automobiles have a function of monitoring whether abnormal conditions occur in a battery box in real time, and whether the problem of timely extinguishing fire when fire is caused by faults in the battery box can be solved is particularly important to worry at present, because the safety of vehicles and personnel on the vehicles can be guaranteed; in addition, it lacks the safeguard measure and leads to the anticorrosive, fire prevention, shock attenuation, the ageing resistance of its box relatively poor, can not effectively protect the battery of installing inside it.

In addition, in the prior art, chinese patent application No. 201621016452.X also discloses a battery box fixing structure of a new energy electric vehicle, which divides a body into a first battery chamber and a second battery chamber by arranging a partition plate in the middle of the battery box body, the left and right sides of the partition plate are connected with a first clamping piece and a second clamping piece through a first connecting spring and a hinge, and the loaded batteries are pressed by the two clamping pieces moving towards two directions under the pushing of the spring; however, after a period of practical use, it still has the following disadvantages:

(1) the clamping pieces are required to be independently pushed to move by using a spring on each of the two sides of the partition plate, after a period of use, the pretightening force of the springs on the left side and the right side is changed, so that the clamping effect of the first clamping piece and the second clamping piece on the battery is influenced, and the risk of shaking caused by the fact that the battery on one side is clamped and the battery on the other side is not clamped possibly exists;

(2) the motion stroke of the clamping piece cannot be effectively controlled, so that the structure of the jacking unit is not stable enough, and the jacking performance is difficult to ensure;

(3) the tight top of pressing from both sides tight piece and battery relies on the line contact application of force of pressing from both sides tight piece bottom line edge and battery, and the application of force effect is relatively poor.

Therefore, a battery box for a new energy automobile is provided.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a battery box for a new energy automobile, which can realize the purpose of quickly disassembling and assembling the battery, so that the practicability of the battery box is effectively improved, the battery box has the function of automatically extinguishing fire when a fire breaks down in the box body, has better safety performance, and can effectively ensure the safety of vehicles and personnel on the vehicles, and the protective layer prepared on the inner surface of the box body can effectively improve the performances of corrosion resistance, fire resistance, shock absorption and ageing resistance of the box body, so that the battery box can effectively protect the battery arranged in the box body, and the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a battery case for new energy automobile, includes the box body, still includes lid, hasp, top tight unit, the unit of putting out a fire and compresses tightly the unit, the lid is established the upper portion of box body, just the rear portion of lid pass through the hinge with the rear portion of box body is articulated to be connected, hasp fixed mounting be in the box body front portion with the anterior juncture of lid, the tight unit of top is installed between two parties the inside of box body, the unit of putting out a fire is installed the interior diapire upper portion central point of box body puts the department, it installs to compress tightly the unit the interior roof bottom of lid.

By adopting the technical scheme, the box cover, the hasp, the jacking unit and the pressing unit are matched, the battery is easily placed between the two inner side walls of the jacking unit and the box body only under the action of gravity, then the box cover is quickly locked at the upper part of the box body by the hasp, and after the box cover is locked, the pressing unit can automatically press the battery, so that the aim of quickly installing the battery is fulfilled; when the battery is disassembled, the box cover is quickly opened only through the hasps, and the battery is lifted upwards from between the jacking unit and the two inner side walls of the box body, so that the aim of quickly disassembling the battery is fulfilled; the fire extinguishing unit is used for extinguishing fire due to timely working when a fault fires inside the box body, so that the safety of vehicles and personnel on the vehicles is effectively guaranteed, the safety performance of the battery box is better, and the practicability is higher.

Furthermore, the tight unit in top includes two roofs and two sets of straining device, two the equal slidable mounting of roof is in the inside of box body, and two the roof symmetry sets up, two the roof all perpendicular to the diapire setting of box body, and is two sets of the equal fixed mounting of straining device is two between the roof, and two sets of straining device symmetry sets up, and is two sets of straining device all is directly in the roof sets up.

Through adopting above-mentioned technical scheme, two sets of straining device are used for driving two roofs and will place the battery top tightly between two inside walls of two roofs and box body to the realization is to the fixed purpose of battery, can prevent effectively that the battery from rocking in the inside of box body, and then guarantees the life of battery, in addition, through setting up straining device to two sets of, and set up two sets of straining device symmetries, thereby make the structure of the tight unit in top more firm, the performance is more stable.

Furthermore, each group of tensioning mechanism comprises a matching seat, two connecting rods and a first spring, wherein the matching seat is fixedly arranged on the inner side wall of the box body, the two connecting rods are symmetrically and movably arranged inside the matching seat, one ends of the two connecting rods, which are far away from each other, extend to the outside of the matching seat, one ends of the two connecting rods, which are far away from each other, are fixedly connected with the two top plates respectively, the first spring is movably arranged inside the matching seat, is positioned between the two connecting rods, and two ends of the first spring are arranged in a manner of being abutted to the two connecting rods respectively.

Through adopting above-mentioned technical scheme, will join in marriage mount fixed mounting on the inside wall of box body to the realization is fixed to straining device's installation, can prevent effectively that the tight unit in top from disturbing in the inside of box body and influencing the use, utilizes first spring drive connecting rod to drive two roofs and push up the battery tightly, can avoid this battery case to need external force to drive two roofs and push up the battery tightly, thereby makes this battery case can practice thrift use cost.

Furthermore, every equal fixed mounting has two spacing bolts on the assembly seat, every the spacing groove has all been seted up on the connecting rod, the spacing groove with spacing bolt corresponds the setting, and corresponds the one end of spacing bolt all stretches into correspondingly the inside of spacing groove.

Through adopting above-mentioned technical scheme, utilize spacing bolt and spacing groove to cooperate, can prevent that the connecting rod from assembling the inside of joining in marriage the dress seat and coming off to make straining device's structure more firm, the performance is more stable.

Furthermore, the side faces, which are away from each other, of the two top plates are provided with inclined surfaces aligned with the edges of the upper ends of the top plates.

Through adopting above-mentioned technical scheme, it all is equipped with the inclined plane to align its upper end edge on the side that two roofs deviate from each other, the setting on inclined plane for the battery can be put into smoothly between two inside walls of two roofs and box body.

Further, the fire extinguishing unit comprises a storage box, a connecting pipe, a controller, an electromagnetic valve, a cylindrical shell, an inflating valve and a smoke sensor, the storage box is fixedly arranged on the upper portion of the inner bottom wall of the box body, the carbon dioxide fire extinguishing agent is stored in the storage box, the connecting pipe is fixedly and vertically arranged on the upper portion of the storage box, the connecting pipe is communicated with the inside of the storage box, the controller is fixedly arranged on one side of the upper portion of the storage box, the electromagnetic valve is fixedly arranged on the connecting pipe, the electric control end of the electromagnetic valve is electrically connected with the control output end of the controller through a control line, the cylindrical shell is fixedly arranged at the upper end of the connecting pipe, the inside of the cylindrical shell is communicated with the inside of the storage box, and a plurality of through holes are uniformly formed in the side wall of, the inflating valve is fixedly installed on the other side of the upper portion of the storage box, the smoke sensor is fixedly installed on the upper portion of the cylindrical shell, and the signal output end of the smoke sensor is electrically connected with the signal input end of the controller through a signal line.

By adopting the technical scheme, the smoke sensor monitors whether the inside of the box body is on fire in real time, when the inside of the box body is on fire, the smoke sensor uploads a detected signal to the controller, the controller controls the electromagnetic valve to be opened, a carbon dioxide extinguishing agent stored in the storage box can enter the cylindrical shell through the connecting pipe and then is sprayed out through the through holes in the side wall of the cylindrical shell, so that the whole box body is filled with carbon dioxide to achieve the purpose of isolating the air in the box body, the fire can be automatically extinguished in an anoxic state, the fire is extinguished, then the inflating valve is used for adding the carbon dioxide extinguishing agent into the box body, and when the air pressure in the box body is higher, the inflating valve can be used for deflating to ensure that the air pressure in the box body is within a safety range; in addition, the carbon dioxide extinguishing agent has the advantages that the carbon dioxide can be automatically dispersed after extinguishing fire, a large amount of extinguishing agent can be prevented from remaining in the box body, the trouble of cleaning the interior of the box body for sanitation can be omitted, and meanwhile, the carbon dioxide is non-toxic, safe and reliable, and can not cause poisoning to people.

Furthermore, the upper part of the storage box is also provided with a barometer, and the barometer is communicated with the inside of the storage box.

Through adopting above-mentioned technical scheme, the barometer convenience of customers looks over the inside atmospheric pressure size of bin, especially conveniently uses when adding the carbon dioxide fire extinguishing agent to the inside of bin.

Further, it includes plectane, cylinder, second spring, deflector, round bar and rubber slab to compress tightly the unit, the plectane passes through fixing bolt fixed mounting and is in the interior roof bottom of lid, cylinder fixed mounting is in the bottom of plectane, second spring movable mounting be in the inside upper portion of cylinder, the deflector movable mounting be in the inside bottom of cylinder, just the upper surface of deflector with the bottom of second spring is inconsistent to be set up, round bar movable mounting be in the bottom end wall central point of cylinder puts the department, just the upper end of round bar with the lower fixed surface of deflector is connected, the rubber slab articulates through the ball hinge the bottom of round bar.

Through adopting above-mentioned technical scheme, when covering the lid, the rubber slab will contradict with the upper portion of battery, and the rubber slab compresses tightly the battery under the effect of second spring, can prevent effectively that the battery from taking place the striking because of rocking and damaging in the inside of box body, effectively guarantees the life of battery.

Further, the periphery of box body aligns its bottom edge symmetry fixed mounting and has four at least installation ears, every the mounting hole has all been seted up to the inside of installation ear.

Through adopting above-mentioned technical scheme, all seted up the mounting hole through setting up the installation ear and in the inside of installation ear for this battery case is convenient for install on the new forms of energy vehicle through the screw.

Furthermore, a plurality of heat dissipation holes are formed in the two side walls, parallel to the top plate, of the box body, and the heat dissipation holes are all strip-shaped heat dissipation holes.

Through adopting above-mentioned technical scheme, a plurality of louvres are used for the battery heat dissipation of installing in this battery case.

Further, a protective layer is further arranged on the inner surface of the box body, and the protective layer is prepared by the following method:

weighing the following raw materials in parts by weight: 18-25 parts of epoxy resin, 8-12 parts of calcium carbonate powder, 10-12 parts of titanium dioxide powder, 12-16 parts of magnesium oxychloride, 8-10 parts of aluminum silicate fiber, 15-20 parts of polyurethane, 3-5 parts of paraffin, 2-4 parts of alcohol ester, 2-4 parts of triethanolamine, 1-3 parts of polyoxyethylene polyoxypropylene ether and 30-50 parts of methanol;

s1, adding the weighed paraffin, alcohol ester dodecyl, triethanolamine, polyoxyethylene polyoxypropylene amine ether and methanol into a stirrer, and stirring for 20-30min at the stirring speed of 600-;

s2, adding epoxy resin, calcium carbonate powder, titanium dioxide powder, magnesium oxychloride, aluminum silicate fiber and polyurethane into a pulverizer to pulverize until the particle diameter of the material is not more than 300nm, so as to prepare a mixed powder material;

s3, adding the mixed solution prepared in the step S1 and the mixed powder material prepared in the step S2 into a reaction kettle, stirring for 20-30min, setting the stirring speed of the reaction kettle to be 800r/min and the temperature to be 60-80 ℃, filtering the mixed solution in the reaction kettle by adopting a stainless steel filter screen of 200 meshes when the reaction kettle stops rotating and the temperature in the reaction kettle is reduced to 45 ℃, wherein the filtered filtrate is the protective coating;

s4, cleaning the inner surface of the box body, drying the inner surface by using a hot air blower, and then uniformly spraying the protective coating prepared in the step S3 on the dried inner surface of the box body by using a high-pressure sprayer spray gun to form a coating film with the thickness of 2-4 mm;

and S5, drying the box body sprayed with the protective coating in the step S4 in a drying chamber at the drying temperature of 80-100 ℃ for 30-40min, and thus obtaining the protective layer on the inner surface of the box body.

Through adopting above-mentioned technical scheme, the process steps of preparation protective coating are simple, realize easily, the protective coating viscosity of preparation is moderate, be difficult for the layering, be convenient for the spraying, no bubble produces, each component fully combines, the comprehensive properties is better, make protective coating can form better coating after the spraying, be difficult for producing the crackle, the film forming effect is better, the inoxidizing coating of preparation possesses better anticorrosive, fire prevention, the shock attenuation, the performance of ageing resistance, the adhesion is better, be difficult for droing, can effectively increase the anticorrosive of box body, fire prevention, the shock attenuation, the performance of ageing resistance, thereby make this battery case can effectively protect the battery of installing in its inside.

In summary, the invention mainly has the following beneficial effects:

1. according to the invention, the box cover, the hasp, the jacking unit and the pressing unit are matched, the battery is easily placed between the jacking unit and the two inner side walls of the box body only under the action of gravity, then the box cover is quickly locked at the upper part of the box body through the hasp, and after the box cover is locked, the pressing unit can automatically press the battery, so that the aim of quickly installing the battery is fulfilled, and the practicability of the battery box is effectively improved;

2. according to the invention, the jacking unit can realize the jacking action on the batteries at two sides only by arranging one spring, and the batteries at two sides can be subjected to the same jacking force no matter how long the battery is used, so that the jacking effect of the jacking unit on the batteries is effectively ensured; meanwhile, the matched limiting bolt and limiting groove are arranged in the jacking unit, so that the connecting rod can be prevented from falling off from the inside of the assembling seat, the structure of the tensioning mechanism is more stable, and the surface contact jacking between the top plate and the battery is realized, so that the overall performance of the jacking unit is more stable;

3. according to the invention, the fire extinguishing unit is used for timely working to extinguish fire when the fire breaks out in the box body, so that the safety of vehicles and personnel on the vehicles is effectively guaranteed, and the safety performance of the battery box is better;

4. according to the invention, the prepared protective layer has good performances of corrosion resistance, fire resistance, shock absorption and ageing resistance, has good adhesion, is not easy to fall off, and can effectively increase the performances of corrosion resistance, fire resistance, shock absorption and ageing resistance of the box body, so that the battery box can effectively protect the battery arranged in the battery box.

Drawings

Fig. 1 is a schematic structural view of a battery pack for a new energy vehicle according to an embodiment;

fig. 2 is a schematic structural view of a battery pack for a new energy vehicle from another perspective according to an embodiment;

fig. 3 is a schematic structural view of a battery box for a new energy vehicle according to an embodiment when a box cover is opened;

fig. 4 is a schematic top view of a battery box for a new energy vehicle according to an embodiment when a box cover is opened;

FIG. 5 is a schematic sectional view taken along section line A-A in FIG. 4;

fig. 6 is a schematic structural view of a battery pack for a new energy vehicle according to an embodiment;

FIG. 7 is a schematic structural view of a tightening unit according to an embodiment;

FIG. 8 is a schematic cross-sectional view of one embodiment of a fire suppression unit;

fig. 9 is a schematic sectional view of a pressing unit according to an embodiment.

In the figure: 1. a box body; 2. a box cover; 3. a hinge; 4. a hasp; 5. mounting lugs; 6. heat dissipation holes; 7. a jacking unit; 8. a fire extinguishing unit; 9. a pressing unit; 10. a tensioning mechanism; 11. a top plate; 12. a bevel; 13. assembling a base; 14. a first spring; 15. a limit bolt; 16. a connecting rod; 17. a limiting groove; 18. a storage tank; 19. an air valve; 20. a barometer; 21. an electromagnetic valve; 22. a through hole; 23. a cylindrical housing; 24. a smoke sensor; 25. a controller; 26. a connecting pipe; 27. a circular plate; 28. fixing the bolt; 29. a second spring; 30. a cylinder; 31. a round bar; 32. a rubber plate; 33. a guide plate; 34. and (4) a ball hinge.

Detailed Description

The present invention is described in further detail below with reference to figures 1-9.

Example 1

The utility model provides a battery case for new energy automobile, as shown in fig. 1-8, includes box body 1, lid 2, hasp 4, the tight unit 7 in top, the unit 8 of putting out a fire and compress tightly unit 9, lid 2 lid is established the upper portion of box body 1, just the rear portion of lid 2 pass through hinge 3 with the articulated connection of rear portion of

box body

1, 4 fixed mounting of hasp are in 1 front portion of box body with the anterior juncture of lid 2, install in the tight unit 7 in the top the inside of box body 1, the unit 8 of putting out a fire is installed the interior diapire upper portion central point of box body 1 puts the department, it installs to compress tightly unit 9 the interior roof bottom of lid 2.

By adopting the technical scheme, the box cover 2, the hasp 4, the jacking unit 7 and the compressing unit 9 are matched, the battery is easily placed between the jacking unit 7 and the two inner side walls of the box body 1 only by virtue of the gravity, then the box cover 2 is quickly locked at the upper part of the box body 1 by utilizing the hasp 4, and after the box cover 2 is locked, the compressing unit 9 can automatically compress the battery, so that the aim of quickly installing the battery is fulfilled; when the battery is disassembled, the box cover 2 is quickly opened only through the hasp 4, and the battery is lifted upwards from between the jacking unit 7 and the two inner side walls of the box body 1, so that the aim of quickly disassembling the battery is fulfilled; the fire extinguishing unit 8 is used for extinguishing fire when the box body 1 is in fire due to fault in time, so that the safety of the vehicle and personnel on the vehicle is effectively guaranteed, the safety performance of the battery box is better, and the practicability is higher.

Preferably, as shown in fig. 3 to 6, the tightening unit 7 includes two top plates 11 and two sets of tensioning mechanisms 10, wherein the two top plates 11 are both slidably mounted inside the box body 1, the two top plates 11 are symmetrically disposed, the two top plates 11 are both disposed perpendicular to the bottom wall of the box body 1, the two sets of tensioning mechanisms 10 are both fixedly mounted between the two top plates 11, the two sets of tensioning mechanisms 10 are symmetrically disposed, and the two sets of tensioning mechanisms 10 are both disposed perpendicular to the top plates 11.

Through adopting above-mentioned technical scheme, two sets of straining device 10 are used for driving two roof 11 and will place the battery top tightly between two inside walls of two roof 11 and box body 1 to the realization is to the fixed purpose of battery, can prevent effectively that the battery from rocking in the inside of box body 1, and then guarantee the life of battery, in addition, through setting up straining device 10 into two sets ofly, and set up two sets of straining device 10 symmetries, thereby make the structure of the tight unit 7 in top more firm, the performance is more stable.

Preferably, as shown in fig. 5 and 7, each set of the tensioning mechanism 10 includes a fitting seat 13, two connecting rods 16 and a first spring 14, the fitting seat 13 is fixedly installed on the inner side wall of the box body 1, the two connecting rods 16 are symmetrically and movably installed inside the fitting seat 13, ends of the two connecting rods 16 far away from each other extend to the outside of the fitting seat 13, ends of the two connecting rods 16 far away from each other are fixedly connected with the two top plates 11 respectively, the first spring 14 is movably installed inside the fitting seat 13, the first spring 14 is located between the two connecting rods 16, and two ends of the first spring 14 are respectively disposed in contact with the two connecting rods 16.

Through adopting above-mentioned technical scheme, will join in marriage dress seat 13 fixed mounting on the inside wall of box body 1 to the realization is fixed to straining device 10's installation, can prevent effectively that the tight unit 7 in top from indiscriminately moving and influencing the use in the inside of box body 1, utilizes first spring 14 drive connecting rod 16 to drive two roof 11 and carry out the top tightly with the battery, can avoid this battery case to need external force to drive two roof 11 and carry out the top tightly with the battery, thereby makes this battery case can practice thrift use cost.

Preferably, as shown in fig. 7, two limiting bolts 15 are fixedly mounted on each assembling seat 13, a limiting groove 17 is formed on each connecting rod 16, the limiting groove 17 is arranged corresponding to the limiting bolt 15, and one end of the corresponding limiting bolt 15 extends into the corresponding limiting groove 17.

Through adopting above-mentioned technical scheme, utilize spacing bolt 15 and spacing groove 17 to cooperate, can prevent that connecting rod 16 from assembling the inside of joining in marriage dress seat 13 and coming off to make straining device 10's structure more firm, the performance is more stable.

Preferably, as shown in fig. 6, the two top plates 11 are provided with inclined surfaces 12 on the sides facing away from each other and aligned with the upper end edges thereof.

Through adopting above-mentioned technical scheme, it all is equipped with inclined plane 12 to align its upper end edge on the side that two roof 11 deviate from each other, the setting of inclined plane 12 for the battery can be put into smoothly between two inside walls of two roof 11 and box body 1.

Preferably, as shown in fig. 5 and 8, the fire extinguishing unit 8 includes a storage tank 18, a connection pipe 26, a controller 25, a solenoid valve 21, a cylindrical housing 23, a valve nozzle 19 and a smoke sensor 24, the storage tank 18 is fixedly installed on the upper portion of the inner bottom wall of the box body 1, the carbon dioxide fire extinguishing agent is stored in the storage tank 18, the connection pipe 26 is fixedly and vertically installed on the upper portion of the storage tank 18, the connection pipe 26 is communicated with the inside of the storage tank 18, the controller 25 is fixedly installed on one side of the upper portion of the storage tank 18, the solenoid valve 21 is fixedly installed on the connection pipe 26, the electric control end of the solenoid valve 21 is electrically connected with the control output end of the controller 25 through a control line, the cylindrical housing 23 is fixedly installed on the upper end portion of the connection pipe 26, and the inside of the cylindrical housing 23 is communicated with the inside of the storage tank, a plurality of through holes 22 are uniformly formed in the side wall of the cylindrical shell 23, the inflating valve 19 is fixedly installed on the other side of the upper portion of the storage box 18, the smoke sensor 24 is fixedly installed on the upper portion of the cylindrical shell 23, and the signal output end of the smoke sensor 24 is electrically connected with the signal input end of the controller 25 through a signal line.

By adopting the technical scheme, the smoke sensor 24 monitors whether the inside of the box body 1 is on fire in real time, and when the inside of the box body 1 is on fire, the detected signal is uploaded to the controller 25, the controller 25 controls the electromagnetic valve 21 to be opened, the carbon dioxide extinguishing agent stored in the storage tank 18 enters the cylindrical shell 23 through the connecting pipe 26 and is sprayed out through the through holes 22 on the side wall of the cylindrical shell 23, the whole box body 1 is filled with carbon dioxide, so as to realize the purpose of isolating the air in the box body 1, the fire can be automatically extinguished under the anoxic state, thereby realizing the purpose of extinguishing the fire, next, the air valve 19 is used to add carbon dioxide fire extinguishing agent into the box body 1, when the air pressure in the box body 1 is high, the air can be discharged through the air valve 19 so as to ensure that the air pressure in the box body 1 is in a safe range; in addition, the carbon dioxide extinguishing agent has the advantages that the carbon dioxide can be automatically dispersed after extinguishing fire, a large amount of extinguishing agent can be prevented from remaining in the box body 1, the trouble of cleaning the interior of the box body 1 for sanitation can be omitted, and meanwhile, the carbon dioxide is non-toxic, safe and reliable, and can not cause poisoning to people.

Preferably, as shown in fig. 8, an air pressure gauge 20 is further installed on the upper portion of the storage box 18, and the air pressure gauge 20 is disposed to communicate with the inside of the storage box 18.

By adopting the technical scheme, the barometer 20 is convenient for a user to check the air pressure inside the storage box 18, and is particularly convenient to use when a carbon dioxide extinguishing agent is added into the storage box 18.

Preferably, as shown in fig. 3 and 9, the pressing unit 9 includes a circular plate 27, a cylindrical body 30, a second spring 29, a guide plate 33, a circular rod 31 and a rubber plate 32, the circular plate 27 is fixedly mounted at the bottom of the inner top wall of the box cover 2 through a fixing bolt 28, the cylindrical body 30 is fixedly mounted at the bottom of the circular plate 27, the second spring 29 is movably mounted at the inner upper portion of the cylindrical body 30, the guide plate 33 is movably mounted at the inner bottom of the cylindrical body 30, the upper surface of the guide plate 33 is disposed to abut against the bottom end of the second spring 29, the circular rod 31 is movably mounted at the center of the end wall of the bottom end of the cylindrical body 30, the upper end of the circular rod 31 is fixedly connected with the lower surface of the guide plate 33, and the rubber plate 32 is hinged at the bottom end of the circular rod 31 through a ball hinge 34.

Through adopting above-mentioned technical scheme, when covering lid 2, rubber slab 32 will contradict with the upper portion of battery, rubber slab 32 compresses tightly the battery under the effect of second spring 29, can prevent effectively that the battery from taking place the striking because of rocking in the inside of box body 1 and damaging, effectively guarantee the life of battery, secondly, articulate rubber slab 32 in the bottom of round bar 31 through ball hinge 34, make rubber slab 32 can alternate inclination in the bottom of round bar 31, can avoid the problem emergence that can't cover tightly because of rubber slab 32 and battery are inconsistent when lid 2.

Preferably, as shown in fig. 1-2, at least four mounting ears 5 are symmetrically and fixedly mounted on the periphery of the box body 1 aligned with the bottom edge thereof, and a mounting hole is formed in each mounting ear 5.

Through adopting above-mentioned technical scheme, through setting up installation ear 5 and all seted up the mounting hole in installation ear 5's inside for this battery case is convenient for install on the new forms of energy vehicle through the screw.

Preferably, as shown in fig. 1-2, a plurality of heat dissipation holes 6 are formed on two side walls of the box body 1 parallel to the top plate 11, and all of the heat dissipation holes 6 are strip-shaped heat dissipation holes.

Through adopting above-mentioned technical scheme, a plurality of louvres 6 are used for the battery heat dissipation of installing in this battery case.

It should be noted that, in the present embodiment, in order to prevent the air pressure inside the storage tank 18 from rising excessively due to a temperature change, a safety valve may be installed at an upper portion of the storage tank 18, and an air pressure sensor electrically connected to the controller 25 may be installed inside the storage tank 18 to detect the air pressure inside the storage tank 18 in real time, when the excessive air pressure in the storage tank 18 is detected, the excessive air pressure signal is transmitted to the controller 25, the controller 25 controls the electromagnetic valve 21 to be opened, the air pressure in the storage tank 18 is discharged, when the air pressure in the storage tank 18 is restored to be within the safe range, the controller 25 controls the electromagnetic valve 21 to be closed, the controller 25 can select a single chip microcomputer with the model number of STC89C51, meanwhile, a buzzer electrically connected with the controller 25 can be arranged in the new energy vehicle, and the buzzer is used for alarming and prompting personnel on the new energy vehicle when a fire breaks out in the battery box.

Example 2

The difference from the embodiment 1 is that a protective layer is further provided on the inner surface of the box body 1, and the protective layer is prepared by the following method:

weighing the following raw materials in parts by weight: 18 parts of epoxy resin, 8 parts of calcium carbonate powder, 10 parts of titanium dioxide powder, 12 parts of magnesium oxychloride, 8 parts of aluminum silicate fiber, 15 parts of polyurethane, 3 parts of paraffin, 2 parts of alcohol ester dodeca, 2 parts of triethanolamine, 1 part of polyoxyethylene polyoxypropylene amine ether and 30 parts of methanol;

s1, adding the weighed paraffin, alcohol ester dodecyl, triethanolamine, polyoxyethylene polyoxypropylene amine ether and methanol into a stirrer, and stirring for 20min at the stirring speed of 600r/min to obtain a mixed solution;

s3, adding the mixed solution prepared in the step S1 and the mixed powder material prepared in the step S2 into a reaction kettle, stirring for 20min, setting the stirring speed of the reaction kettle to 600r/min and the temperature to 60 ℃, filtering the mixed solution in the reaction kettle by using a 200-mesh stainless steel filter screen when the reaction kettle stops rotating and the temperature in the reaction kettle is reduced to 45 ℃, wherein the filtered filtrate is the protective coating;

s4, cleaning the inner surface of the box body 1, drying the inner surface by using a hot air blower, and then uniformly spraying the protective coating prepared in the step S3 on the dried inner surface of the box body 1 by using a high-pressure sprayer spray gun to form a coating film with the thickness of 3 mm;

and S5, drying the box body 1 sprayed with the protective coating in the step S4 in a drying chamber at the drying temperature of 80 ℃ for 30min to obtain the protective layer on the inner surface of the box body 1.

Example 3

The difference from the example 2 lies in the preparation of the protective layer, and the specific preparation method is as follows:

weighing the following raw materials in parts by weight: 22 parts of epoxy resin, 10 parts of calcium carbonate powder, 11 parts of titanium dioxide powder, 14 parts of magnesium oxychloride, 9 parts of aluminum silicate fiber, 18 parts of polyurethane, 4 parts of paraffin, 3 parts of alcohol ester dodeca, 3 parts of triethanolamine, 2 parts of polyoxyethylene polyoxypropylene ether and 40 parts of methanol;

s1, adding the weighed paraffin, alcohol ester dodecyl, triethanolamine, polyoxyethylene polyoxypropylene amine ether and methanol into a stirrer, and stirring for 25min at the stirring speed of 700r/min to obtain a mixed solution;

s3, adding the mixed solution prepared in the step S1 and the mixed powder material prepared in the step S2 into a reaction kettle, stirring for 25min, setting the stirring speed of the reaction kettle to 700r/min and the temperature to 70 ℃, filtering the mixed solution in the reaction kettle by using a 200-mesh stainless steel filter screen when the reaction kettle stops rotating and the temperature in the reaction kettle is reduced to 45 ℃, wherein the filtered filtrate is the protective coating;

and S5, drying the box body 1 sprayed with the protective coating in the step S4 in a drying chamber at the drying temperature of 90 ℃ for 35min to obtain the protective layer on the inner surface of the box body 1.

Example 4

weighing the following raw materials in parts by weight: 25 parts of epoxy resin, 12 parts of calcium carbonate powder, 12 parts of titanium dioxide powder, 16 parts of magnesium oxychloride, 10 parts of aluminum silicate fiber, 20 parts of polyurethane, 5 parts of paraffin, 4 parts of alcohol ester, 4 parts of triethanolamine, 3 parts of polyoxyethylene polyoxypropylene amine ether and 50 parts of methanol;

s1, adding the weighed paraffin, alcohol ester dodecyl, triethanolamine, polyoxyethylene polyoxypropylene amine ether and methanol into a stirrer, and stirring for 30min at the stirring speed of 800r/min to obtain a mixed solution;

s3, adding the mixed solution prepared in the step S1 and the mixed powder material prepared in the step S2 into a reaction kettle, stirring for 30min, setting the stirring speed of the reaction kettle to be 800r/min and the temperature to be 80 ℃, filtering the mixed solution in the reaction kettle by using a 200-mesh stainless steel filter screen when the reaction kettle stops rotating and the temperature in the reaction kettle is reduced to 45 ℃, wherein the filtered filtrate is the protective coating;

and S5, drying the box body 1 sprayed with the protective coating in the step S4 in a drying chamber at the drying temperature of 100 ℃ for 40min to obtain the protective layer on the inner surface of the box body 1.

The cartridges 1 of examples 1-4 were all made of the same plastic and the same processing technology, and the cartridges 1 of examples 1-4 were tested in the laboratory under the same conditions for their fire performance as follows: the inner surface of the case 1 of examples 1-4 was placed on the same open fire for fire tests and the results were recorded in the following table:

examples	Record the results
		Example 1	The case 1 started to burn after 3 minutes
Example 2	The case 1 started to burn after 21 minutes
		Example 3	The case 1 started to burn after 20 minutes
Example 4	The case 1 started to burn after 22 minutes

The embodiment 4 is the optimal embodiment according to comparative analysis of the test record results on the upper table, and by adopting the technical scheme, the process for preparing the protective coating is simple in steps and easy to implement, the prepared protective coating is moderate in viscosity, not easy to layer, convenient to spray, free of bubble generation, fully combined with all components and good in comprehensive performance, so that the protective coating can form a good coating after spraying, cracks are not easy to generate, the film forming effect is good, the prepared protective layer has good corrosion resistance, fire resistance, shock absorption and ageing resistance, the adhesiveness is good, the protective coating is not easy to fall off, the corrosion resistance, fire resistance, shock absorption and ageing resistance of the box body 1 can be effectively improved, and therefore the battery box can effectively protect the batteries installed inside the battery box.

The working principle is as follows: according to the battery box for the new energy automobile, the box cover 2, the hasp 4, the jacking unit 7 and the compressing unit 9 are matched, the battery is easily placed between the jacking unit 7 and two inner side walls of the box body 1 only by means of gravity, then the box cover 2 is quickly locked at the upper part of the box body 1 by the hasp 4, and after the box cover 2 is locked, the compressing unit 9 can automatically compress the battery, so that the purpose of quickly installing the battery is achieved, and the practicability of the battery box is effectively improved; the fire extinguishing unit 8 is used for timely working to extinguish fire when the fire breaks out in the box body 1, the smoke sensor 24 monitors whether the interior of the box body 1 is on fire in real time, when the fire breaks out in the box body 1, the smoke sensor uploads a detected signal to the controller 25, the controller 25 controls the electromagnetic valve 21 to be opened, a carbon dioxide extinguishing agent stored in the storage box 18 enters the cylindrical shell 23 through the connecting pipe 26 and is sprayed out through the through holes 22 in the side wall of the cylindrical shell 23, so that the interior of the whole box body 1 is filled with carbon dioxide, the purpose of isolating air in the box body 1 is achieved, the fire can be automatically extinguished in an oxygen-deficient state, the fire extinguishing purpose is achieved, the safety of vehicles and personnel on the vehicles is effectively guaranteed, and the safety performance of the battery box is better;

the prepared protective layer has good performances of corrosion resistance, fire resistance, shock absorption and ageing resistance, has good adhesiveness and is not easy to fall off, and the performances of corrosion resistance, fire resistance, shock absorption and ageing resistance of the box body 1 can be effectively improved, so that the battery box can effectively protect the battery arranged in the battery box.

The using method comprises the following steps: when the novel energy vehicle fire extinguishing box is used, the box body 1 is fixedly installed on a novel energy vehicle through screws, then the battery is lifted and placed between the two top plates 11 and the two inner side walls of the box body 1, the battery can be easily installed in the box body 1 under the action of the inclined plane 12 and gravity, meanwhile, the battery installed in the box body 1 can be used for supplying power to the fire extinguishing unit 8, then the box cover 2 is quickly locked on the upper portion of the box body 1 through the hasp 4, and after the box cover 2 is locked, the pressing unit 9 can automatically press the battery tightly, so that the purpose of quickly installing the battery is achieved; when dismantling the battery, only need through hasp 4 with lid 2 open fast, with the battery from the tight unit 7 in top and the box body 1 between two inside walls upwards provide can to the realization is to the purpose of battery quick dismantlement.

The parts not involved in the present invention are the same as or can be implemented by the prior art. The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a battery case for new energy automobile, includes box body (1), its characterized in that: still include lid (2), hasp (4), the tight unit (7) in top, put out a fire unit (8) and compress tightly unit (9), lid (2) lid is established the upper portion of box body (1), just the rear portion of lid (2) pass through hinge (3) with the rear portion of box body (1) is articulated to be connected, hasp (4) fixed mounting be in box body (1) front portion with the anterior juncture of lid (2), the tight unit (7) in top is installed between two parties the inside of box body (1), install unit (8) of putting out a fire the interior diapire upper portion central point department of box body (1), it installs to compress tightly unit (9) the interior roof bottom of lid (2).

2. The battery box for the new energy automobile as claimed in claim 1, wherein: the jacking unit (7) comprises two top plates (11) and two groups of tensioning mechanisms (10), wherein the top plates (11) are slidably mounted in the box body (1) in a whole, the top plates (11) are symmetrically arranged and are perpendicular to the bottom wall of the box body (1), the tensioning mechanisms (10) are fixedly mounted between the top plates (11) in a whole, and the tensioning mechanisms (10) are symmetrically arranged and are arranged in a whole, and the tensioning mechanisms (10) are arranged in a whole.

3. The battery box for the new energy automobile as claimed in claim 2, wherein: each group of tensioning mechanisms (10) comprises an assembling seat (13), two connecting rods (16) and a first spring (14), the assembling seat (13) is fixedly installed on the inner side wall of the box body (1), the two connecting rods (16) are symmetrically and movably installed inside the assembling seat (13), one ends, far away from each other, of the two connecting rods (16) extend to the outside of the assembling seat (13), one ends, far away from each other, of the two connecting rods (16) are fixedly connected with the two top plates (11) respectively, the first spring (14) is movably installed inside the assembling seat (13), the first spring (14) is located between the two connecting rods (16), and two ends of the first spring (14) are arranged in a manner of abutting against the two connecting rods (16) respectively.

4. The battery box for the new energy automobile as set forth in claim 3, wherein: each assembling seat (13) is fixedly provided with two limiting bolts (15), each connecting rod (16) is provided with a limiting groove (17), each limiting groove (17) corresponds to one limiting bolt (15), and one end of each corresponding limiting bolt (15) extends into the corresponding limiting groove (17).

5. The battery box for the new energy automobile as claimed in claim 2, wherein: and inclined planes (12) are arranged on the side faces, which are deviated from each other, of the two top plates (11) and are aligned with the edges of the upper ends of the top plates.

6. The battery box for the new energy automobile as claimed in claim 1, wherein: the fire extinguishing unit (8) comprises a storage box (18), a connecting pipe (26), a controller (25), an electromagnetic valve (21), a cylindrical shell (23), a valve (19) and a smoke sensor (24), wherein the storage box (18) is fixedly installed on the upper portion of the inner bottom wall of the box body (1), carbon dioxide fire extinguishing agents are stored in the storage box (18), the connecting pipe (26) is fixedly and vertically installed on the upper portion of the storage box (18), the connecting pipe (26) is communicated with the inside of the storage box (18), the controller (25) is fixedly installed on one side of the upper portion of the storage box (18), the electromagnetic valve (21) is fixedly installed on the connecting pipe (26), and the electric control end of the electromagnetic valve (21) is electrically connected with the control output end of the controller (25) through a control line, cylindrical housing (23) fixed mounting be in the upper end tip of connecting pipe (26), just the inside of cylindrical housing (23) with the inside of bin (18) is linked together the setting, a plurality of through-holes (22) have evenly been seted up on the lateral wall of cylindrical housing (23), inflating valve (19) fixed mounting be in the upper portion opposite side of bin (18), smoke transducer (24) fixed mounting be in the upper portion of cylindrical housing (23), just the signal output part passing signal line of smoke transducer (24) with the signal input part electric connection of controller (25).

7. The battery box for the new energy automobile as claimed in claim 6, wherein: an air pressure gauge (20) is further mounted on the upper portion of the storage box (18), and the air pressure gauge (20) is communicated with the inside of the storage box (18).

8. The battery box for the new energy automobile as claimed in claim 1, wherein: the pressing unit (9) comprises a circular plate (27), a cylinder body (30), a second spring (29), a guide plate (33), a circular rod (31) and a rubber plate (32), the circular plate (27) is fixedly installed at the bottom of the inner top wall of the box cover (2) through a fixing bolt (28), the cylinder body (30) is fixedly installed at the bottom of the circular plate (27), the second spring (29) is movably installed at the upper part of the inside of the cylinder body (30), the guide plate (33) is movably installed at the bottom of the inside of the cylinder body (30), the upper surface of the guide plate (33) is in contact with the bottom end of the second spring (29), the circular rod (31) is movably installed at the central position of the end wall of the bottom end of the cylinder body (30), the upper end of the circular rod (31) is fixedly connected with the lower surface of the guide plate (33), the rubber plate (32) is hinged at the bottom end of the round rod (31) through a ball hinge (34).

9. The battery box for the new energy automobile as claimed in claim 1, wherein: the periphery of box body (1) aligns its bottom edge symmetry fixed mounting has four at least installation ears (5), every the mounting hole has all been seted up to the inside of installation ear (5).

10. The battery box for the new energy automobile as claimed in claim 1, wherein: a plurality of heat dissipation holes (6) are formed in the two side walls, parallel to the top plate (11), of the box body (1), and the heat dissipation holes (6) are all strip-shaped heat dissipation holes.