CN202806332U

CN202806332U - Passenger car ceiling with lithium batteries

Info

Publication number: CN202806332U
Application number: CN2012204753514U
Authority: CN
Inventors: 李佳; 刘军; 朱奎生
Original assignee: JIANGXI KAMA BONLUCK BUSINESS BUS CO Ltd
Current assignee: JIANGXI KAMA BONLUCK BUSINESS BUS CO Ltd
Priority date: 2012-09-18
Filing date: 2012-09-18
Publication date: 2013-03-20
Anticipated expiration: 2022-09-18

Abstract

The utility model discloses a passenger car ceiling with lithium batteries. The passenger car ceiling is composed of a compartment ceiling (6), a ceiling shell (5), a bearing support (8), a lithium battery pack (1), a corrugated-shaped shockproof shock absorber (3), a first shockproof soft cushion (2) and a second shockproof soft cushion (4), wherein the bearing support (8) is used for supporting the compartment ceiling (6); the lithium battery pack (1) is arranged in a lithium battery box on the compartment ceiling (6); the corrugated-shaped shockproof shock absorber (3) is arranged near the lithium battery pack (1); the second shockproof soft cushion (4) is laid below the lithium battery box; the first shockproof soft cushion (2) is laid on the lithium battery; and the ceiling shell (5) comprises the compartment ceiling (6) provided with the lithium battery pack. The lithium battery pack is moved to the interval of the passenger car ceiling, so that the problem that water enters the lithium batteries due to heavy rain is solved; and meanwhile, the corrugated-shaped shockproof shock absorber (3) and the shockproof cushions are arranged, so that the problem of shock proofness of lithium batteries is solved. The passenger car ceiling is suitable for electric automobiles and electric passenger cars by taking lithium batteries as power.

Description

A kind of bus crest slab with lithium cell

Technical field

The utility model relates to a kind of bus crest slab with lithium cell, belongs to lithium cell applied technical field on passenger vehicle.

Background technology

Lithium cell is comprised of five key elements such as positive pole, negative pole, barrier film, electrolyte, monomer external packings.In recent years, the safety issue of lithium cell extremely user is paid close attention to, but the safety of lithium cell is not only relevant with the battery material nature, and relevant with the use of battery technology of preparing and lithium cell.

Lithium cell in use (damages as cause management system because of collision) for a certain reason and causes battery charging voltage too high, and remaining a part of lithium will be deviate from the positive pole, forms dendrite to negative terminal surface with the form deposition of lithium metal through battery acid.Dendrite pierces through barrier film, forms internal short-circuit.The main component of battery acid is carbonic ester, and flash-point is very low, and boiling point is also lower, can burn even explode under certain condition.It is overheated to occur such as lithium cell, can cause the oxidized and reduction of carbonic ester in the battery acid, produces a large amount of gases and more heat, if lack safety valve or gas has little time to discharge by safety valve, just inner pressure of battery can sharply rise and set off an explosion.

In the BYD battery-driven car collision case that occurs the first half of this year, car body moment after being hit is lighted raging flames, causes the occupant all to die.According to experts' analysis, when battery-driven car bumps, may cause the battery plus-negative plate material to break through barrier film, when energy recharges to battery fast during brake, the superelevation electric current of moment can cause battery to be short-circuited, and battery acid produces gas at high temperature by electrolysis, internal pressure raises, and causes the most at last catching fire even blast.In addition, protective circuit may be damaged in when collision or since speed not yet have an effect too soon and cause that battery is on fire.

Because bumping in the Vehicle Driving Cycle is the highest traffic accident of probability of occurrence, therefore, prevent that the generation of the lithium cell group explosion accident that causes because of vehicle collision, the driving safety that guarantees to be equipped with the pure electric vehicle of lithium cell group from just becoming the auto trade urgent problem.

Lithium cell in use, because the lithium cell group of general electronlmobil all is arranged on the base plate at automotive front or rear portion, in case it is too large to rain, cause excess surface water excessively dark, also cause cell expansion, distortion and cracking etc. because of the immersion of lithium cell group easily, and then causing the lithium cell short circuit, heat release sets off an explosion in discharge or process of charging.

The south China area is the rainwater prone areas; stage in the first half of the year particularly; often having heavy rain comes; cause the puddle, ground countless; be exactly at northern area; also Chang Fashengyin falls the situation that heavy rain causes vehicle under the overpass of ponding or low-lying place is flooded; for the pure electric vehicle that guarantees to be equipped with the lithium cell group and hybrid vehicle in the multiple mid-season normal operation of rainwater; protection lithium battery box main body is not destroyed by immersion; for this reason, studying a kind of lithium cell group anti-collision, to hit the method that prevents lithium cell group immersion very important.

Summary of the invention

The purpose of this utility model is that according to the problem that existing lithium battery electrical automobile exists in using lithium cell, the utility model discloses a kind of bus crest slab device with lithium cell.

The technical solution of the utility model is, the utility model moves to the deposit position of lithium cell group on the car roof above the chassis, namely between automobile bodies ceiling and car roof shell, increase a space of depositing the lithium cell group, and set up the anticollision facility in the position of each lithium cell.

The utility model with the bus crest slab of lithium cell by carriage ceiling 6, roof hood 5, bearing support 8, lithium cell group 1, the shockproof Shock absorber 3 of corrugated, the first shockproof cushion 2 and the second shockproof cushion 4, form; Bearing support 8 supports carriage ceiling 6, lithium cell group 1 is installed in the lithium battery kit on the carriage ceiling 6, it is other that the shockproof Shock absorber 3 of corrugated is placed in lithium cell group 1, the second shockproof cushion 4 is layered under the lithium cell, the first shockproof cushion 2 is layered on above the lithium cell, and roof hood 5 covers and comprises all carriage ceilings that the lithium cell group is housed 6.

The utility model increases a space of depositing the lithium cell group between automobile bodies ceiling 7 and car roof shell 5, consist of the bus crest slab with lithium cell.Size according to the lithium cell group, carriage ceiling neatly is divided into some little lattice as battery case, every lattice battery case can be put one group of lithium cell 1 into, and in the front and back of every lattice lithium cell, respectively lay a shockproof Shock absorber 3 of corrugated on the both direction limit, the left and right sides, to dissolve or to prevent that automobile emergency from stopping, produce impulsive force when anxious starting or wigwag motion, under the lithium cell group of the battery case of every lattice, lay the second shockproof cushion 4, on the lithium cell group, also lay the first shockproof cushion 2, avoid automobile when uneven road surface travels, to cause the lithium cell group to vibrations and the bump of the collision formation of top and bottom because jolting.

The mounting means of lithium cell group has two kinds of forms: the one, and roof hood is made case lid shape, and one side is established hinge, and one side is established buckle, and the roof hood seam adopts the sealing rubber ring sealing, guarantees that each battery case must not advance rainwater.Install or during the maintenance lithium cell, start roof hood, install or keep in repair complete, build roof hood, and fastened by the card right side.Also have a kind of installation form to be, open several windows from the automobile bodies ceiling, one of a plurality of battery cases composition are large, put into successively ceiling and fixing from the carriage ceiling window, then from below the carriage ceiling cover plate being built and being fixed.

The beneficial effects of the utility model are, because position of collision is mainly on front, back and the two sides, the left and right sides of vehicle during vehicle collision, interval by the lithium cell group being moved to the highest ceiling of automobile position, not only can make the lithium cell group avoid earthquake intensity maximum, primary collision that probability is the highest, and since after the collision distortion of vehicle effectively absorbed most of energy of collision, thereby effectively reduce and directly hit when having avoided because of vehicle collision the lithium cell group explosion accident that causes in the lithium cell group generation, guarantee to be equipped with the driving safety of the pure electric vehicle of lithium cell group.In addition, it is interval that the lithium cell group is moved to the highest ceiling of automobile position, it is low because of the position also to have solved the lithium cell group, the problem of easily being damaged or setting off an explosion in ponding by bubble, simultaneously the present invention on the structure about battery case lithium cell group or front and back, the shockproof Shock absorber of corrugated has been installed, has been placed shockproof cushion in the top and bottom of lithium cell group, prevented the impaction lesion that a plurality of direction vibrations of automobile cause lithium cell.

The utility model is applicable to electronlmobil and the electrobus take lithium cell as power.

Description of drawings

Fig. 1 is that the utility model motor vehicle length direction top lithium cell group is arranged scheme drawing;

Fig. 2 is that the utility model vehicle width direction top lithium cell group is arranged scheme drawing;

Picture in picture number: the 1st, the lithium cell group; 2 is first shockproof cushions; The 3rd, the shockproof Shock absorber of corrugated; 4 is second shockproof cushions; The 5th, roof hood; The 6th, the compartment; The 7th, carriage ceiling; The 8th, bearing support.

The specific embodiment

The specific embodiment of the present utility model as shown in Figure 1.

Present embodiment adds the bearing support 8 that is enough to bear lithium cell group weight under the car ceiling, size according to the lithium cell group, carriage ceiling 7 neatly is divided into some little lattice as battery case, every lattice battery case can be put lithium cell group 1 into, and in the front and back of every lattice, respectively lay a shockproof Shock absorber 3 of corrugated on the both direction limit, the left and right sides, to dissolve or to prevent that automobile emergency from stopping, produce impulsive force when anxious starting or wigwag motion, under the lithium cell group of the battery case of every lattice, lay the second shockproof cushion 4, on the lithium cell group, also lay the first shockproof cushion 2, avoid automobile when uneven road surface travels, to cause the lithium cell group to vibrations and the bump of the collision formation of top and bottom because jolting.Because the lithium cell group is arranged on automobile top, and the top seals, and can avoid rainwater to the infringement of lithium cell fully, unless whole automobile all is immersed in the water.Automobile top shell 5 can be opened from a side, and the other end arranges hinge, and the lithium cell group is installed and the maintenance needs to adapt to, and the edge that hinge place and shell are opened is provided with the caulking gum cushion device, avoids from hinge and the place's water inlet of cracking.

Claims

1. bus crest slab with lithium cell, it is characterized in that, described bus crest slab by carriage ceiling (6), roof hood (5), bearing support (8), lithium cell group (1), the shockproof Shock absorber of corrugated (3), the first shockproof cushion (2) and the second shockproof cushion (4), form; Bearing support (8) supports carriage ceiling (6), and lithium cell group (1) is installed in the lithium battery kit on the carriage ceiling (6); It is other that the shockproof Shock absorber of corrugated (3) is placed in lithium cell group (1), and the second shockproof cushion (4) is layered under the lithium cell, and the first shockproof cushion (2) is layered on above the lithium cell, and roof hood (5) covers and comprises that all are equipped with the carriage ceiling of lithium cell group (6).