CN102009586A

CN102009586A - Mounting structure for power battery pack of electric automobile

Info

Publication number: CN102009586A
Application number: CN2010105637728A
Authority: CN
Inventors: 杨培蕾; 岳刚; 袁昌荣; 任勇; 苏岭
Original assignee: Chongqing Changan Automobile Co Ltd; Chongqing Changan New Energy Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd; Chongqing Changan New Energy Automobile Co Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-04-13

Abstract

The invention provides a mounting structure for a power battery pack of an electric automobile. The battery pack is rectangular, has a step shape with one higher end and the other lower end and is arranged below an automobile chassis; the higher end of the battery pack is arranged in a high space below a rear-seat bottom board; the lower end of the battery pack is arranged below a front-seat cab bottom board; an air inlet longitudinally formed in the middle of the lower end of the battery pack is positioned below a central pipeline; and two exhaust fans which are transversely arranged at the higher end of the battery pack are correspondingly arranged below the rear seat. The battery pack is positioned between a body transverse beam and a body longitudinal beam; lugs are respectively arranged on two longer sides and two shorter sides of the battery pack; and lug connecting blocks are respectively arranged on the body transverse beam and the body longitudinal beam correspondingly and are fastened and assembled through bolts so as to fix the battery pack on the automobile body. On one hand, the structure solves the problem of the contradiction between volume requirement and the arrangement space of the power battery and the contradiction between the large complete-automobile modification and reduction of man-machine comfort; on the other hand, the structure meets the requirement of the battery on complete automobile collision safety.

Description

A kind of mounting structure of electric automobile power battery bag

Technical field

The invention belongs to the electronlmobil applied technical field, be specifically related to a kind of mounting structure of electric automobile power battery bag.

Background technology

Pure electric vehicle has and does not rely on oil resources, zero-emission, use cost is low and can stabilizes advantages such as electrical network low power consumption, but there is also the problem of insufficient driving range, though the plug-in exploitation that mixes moving car has solved this problem, but because it carries the fuel oil system that a cover increases journey, make the arrangement space of battery more narrow and small, the noise silencer of its increase and fuel tank have brought a new difficult problem also for the layout of battery.Though the lithium-ion-power cell technology has obtained breakthrough progress, with regard to present technology, still there are characteristics such as big, the heavy and difficult arrangement of volume in the demand side that satisfies car load.

At traditional car, should consider that the car load axle load distributes, to satisfy the ground Clearance again, raising the floor or heightening suspension simply can change chair mounted point and the man-machine traveling comfort of car load.As chassis being done very big change, development progress can prolong, and development cost are also very huge.Domestic many repacking vehicles all are placed on car load spare tyre or baggage container position to battery at present, and this way is very irrational.Battery has occupied the spare tyre position makes car load not deposit the space of spare tyre, and the most important thing is that the lithium cell energy is higher, compare with fuel tank and to bump safety thereafter and also must draw attention, the battery extruding that is collided can cause that internal short-circuit of battery makes battery failure, causes on fire, the blast of battery when serious.As seen being placed on car load spare tyre and baggage container place battery crash survivability can not get guaranteeing that there is high risk in the driving safety of chaufeur.

Summary of the invention

The mounting structure that the purpose of this invention is to provide a kind of electric automobile power battery bag, be specially adapted to the plug-in hybrid car, it solves the contradiction of long-pending demand of electrokinetic cell inclusion and arrangement space on the one hand, and the contradiction of car load change amount Yamato machine traveling comfort reduction; It satisfies the collision safety requirement of battery to car load on the other hand, promotes the exploitation of plug-in hybrid car.

Technical scheme of the present invention is as follows:

A kind of mounting structure of electric automobile power battery bag, described power brick are oblong, and are the short stairstepping of this end of an end, and it is installed under the car chassis;

It is characterized in that: a high end of described power brick is in the height space that is arranged under the row's seat base plate of back, and a short end is arranged under the front-seat operator's compartment seat base plate; The ventilation inlet of vertical setting of the end centre that power brick is short is positioned at the center tube below, and two air outlet correspondences of the horizontally set of a high end are arranged in the below of described back row's bed plate;

Described power brick is between vehicle body crossbeam and chassis runner; All be respectively arranged with hanger on two long limits of power brick and the minor face, the cooresponding respectively hanger contiguous block that is provided with on chassis runner and the vehicle body crossbeam is fixed on power brick on the vehicle body by the bolt tightening assembling.

The invention has the advantages that:

(1) power brick of the present invention is that a whole infantees is put, and it makes full use of the space of traditional vehicle base plate central authorities, makes that traditional handbrake mechanism is kept, and is convenient to the foundation of power brick cooling system again.

(2) power brick of the present invention, its inner structure is simple, compactness; Battery module is easy to assembly, and it is little that it takies vehicle body space, for the layout of fuel tank and noise silencer provides than large space.

(3) before power brick of the present invention concentrates on, among the back axle, between the left-right longeron, less to car load axle load distribution influence, and after bump/precedingly bump with cell safety distance greatlyyer, crash survivability also is guaranteed, and is specially adapted to the exploitation of present plug-in hybrid car.

Description of drawings

Fig. 1 is the layout scheme drawing of power brick;

Fig. 2 power brick contour structures scheme drawing;

The peripheral fixed installation point of Fig. 3 power brick scheme drawing;

Arrange scheme drawing on Fig. 4 electrokinetic cell assembly body platform;

Schematic side view on Fig. 5 electrokinetic cell assembly body platform;

Fig. 6 electrokinetic cell assembly body platform front elevational schematic;

Fig. 7 body platform schematic top plan view.

1. centre gangway; 2. power brick; 3. the seat base plate is arranged in the back; 4. handbrake mechanism; 5. ventilation inlet; 6. air outlet; 7. battery power connection lead and CAN connection interface; 8. hanger, 9. passenger-car chassis left and right sides crossbeam; 10. the seat height space at the end is arranged in the back; 11. boot position; 12. hanger contiguous block; 13. vehicle body crossbeam; 14. chassis runner.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing.

Referring to Fig. 1, Fig. 2, power brick 2 is whole to be oblong, and is an end height, stairstepping that an end is low, and its high end is arranged in 10 li of height space under the row's seat base plate 3 of back, and a short end is arranged under the front-seat operator's compartment seat base plate.Because power brick is arranged in below the car chassis, institute is so that the handbrake mechanism 4 of the center tube 1 of former car and orthodox car is kept, and parking brake wire harness 4 is arranged base 3 horizontal two ends from the back and drawn.

The center tube 1 of former car is used for being provided with the battery heat dissipation wind channel, three ventilation inlets, 5 just vertical correspondences on the described power brick are arranged in described center tube 1 below, two air outlet 6 horizontal correspondences are arranged in the below of described back row's base 3, wind enters power brick 2 inside by the battery heat dissipation wind channel under the center tube 1 through ventilation inlet 5, after air and battery carry out interchange of heat, beyond air outlet 6 extraction power brick.Because power brick is exposed outside car body and close ground, so battery power connection lead and CAN connection interface 7 are arranged on the top of power brick 2, so just make the both positive and negative polarity plug-in unit of high pressure wire harness and the top that communication CAN line is arranged in Battery case, to improve the working condition safety of paddling of automobile.

Referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the width dimensions of power brick 2 is limited by two chassis runneies 14 of car load, length dimension is limited by two vehicle body crossbeams 13 of car load, be respectively arranged with 4 hangers 8 on the two long limits of power brick, be respectively arranged with 2 hangers 8 on the minor face, coorespondingly respectively on two vehicle body crossbeams 13 of car load be provided with 4 hanger contiguous blocks 12, on two chassis runneies 14 of car load respectively correspondence be provided with 2 hanger contiguous blocks 12, hanger 8 and hanger contiguous block 12 are fixed on power brick on the body bottom panel 3 by bolt tightening assembling.Because power brick is between four beams, and the carload distribution rationally, increases so bump safety distance thereafter, and the driving safety reliability improves.

Claims

1. the mounting structure of an electric automobile power battery bag, described power brick (2) is an oblong, and is the short stairstepping of this end of an end, it is installed under the car chassis;

It is characterized in that: a high end of described power brick (2) is for height space (10) lining that is arranged under back row's seat base plate (3), and a short end is arranged under the front-seat operator's compartment seat base plate; The ventilation inlet (5) of vertical setting of the end centre that power brick is short is positioned at center tube (1) below, and two air outlets (6) correspondence of the horizontally set of a high end is arranged in the below of described back row's bed plate (3);

Described power brick is positioned between vehicle body crossbeam (13) and the chassis runner (14); All be respectively arranged with hanger (8) on two long limits of power brick (2) and the minor face, the cooresponding respectively hanger contiguous block (12) that is provided with on chassis runner (14) and the vehicle body crossbeam (13) is fixed on power brick on the vehicle body by the bolt tightening assembling.