CN202013910U

CN202013910U - Battery module structure for electric vehicle

Info

Publication number: CN202013910U
Application number: CN2011200514098U
Authority: CN
Inventors: 陈光森; 周建青; 艾群; 陈泽平; 何桂强
Original assignee: Advanced Electronics Energy Ltd
Current assignee: Advanced Electronics Energy Ltd
Priority date: 2011-03-01
Filing date: 2011-03-01
Publication date: 2011-10-19
Anticipated expiration: 2021-03-01

Abstract

The utility model discloses a battery module structure for an electric vehicle. The battery module structure comprises an upper metal casing, a lower metal casing, a front plastic cover body and a rear plastic cover body which are packaged outside a battery cell, wherein L-shaped turned-over edges are respectively arranged at the left ends and the right ends of both the upper and the lower casings; the vertical edges of the L-shaped turned-over edges of the upper and the lower casings are combined to form an accommodating chamber for accommodating the battery cell; the horizontal edges of the L-shaped turned-over edges of the upper and the lower casings are jointed; connecting parts protruding out of the surfaces of the front and the rear cover bodies are respectively arranged at the left ends of the right ends of the front and the rear cover bodies; the front end parts and the rear end parts of the L-shaped turned-over edges of both the upper and the lower casings are embedded into the front and the rear cover bodies through the connecting parts; corresponding connection holes I are formed on the connecting parts and the horizontal edges; and the upper casing and the lower casing, as well as the front cover body and the rear cover body, are securely connected in the way that screw rods penetrate the connection holes I and are locked by lock nuts. The battery module structure for the electric vehicle has the advantages of reasonable and compact structure, good radiating effect and reliability in fixation, facilitates flexible assembly, maintenance and disassembly of batteries, and can be widely applied to electric vehicles.

Description

The batteries of electric automobile modular structure

Technical field

The utility model relates to a kind of batteries of electric automobile, particularly a kind of batteries of electric automobile modular structure.

Background technology

Continuous development along with electric automobile, lithium-ion-power cell has development potentiality in electric motor car market, wherein Guan Jian technology is except the superior battery performance of need, another important development subject under discussion then is the safety and stability characteristic of battery pack, designs the key component that a good battery pack system will be an electric automobile.At present, common on the market batteries of electric automobile bag is normally got up to use by a plurality of module connection in series-parallel, its battery case is generally materials such as box hat, aluminum hull, plastic housing, outer surface is smooth, battery module all is the very compact battery case the inside that is placed in the confined space, there is following shortcoming in this project organization: 1. wherein box hat, aluminum hull directly contact battery case, and battery pack is influential to the car load insulation resistance, and the possibility of electric leakage is arranged; 2. battery module is all bigger and thick in the past, materials such as module outside box hat, aluminum hull, plastic housing, and the battery in the module is closely arranged and will be caused radiating effect bad owing to compact conformation; 3. module and module, module and battery case do not have effective fixture, and battery is fixing not firm.These factors have all influenced the fail safe and the stability of electric automobile operation, at above-mentioned defective, have done following improvement.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, compact, good heat dissipation, is convenient to assembling flexibly and battery maintenance dismounting, and fixing reliable batteries of electric automobile module.

The technical scheme that its technical problem that solves the utility model adopts is:

The batteries of electric automobile modular structure, comprise and being packaged on the outer metal of electric core, before lower house and the plastic cement, rear cover body, on described, a lower house left side, right two ends are respectively equipped with L shaped flange, wherein go up, the vertical edge of the L shaped flange of lower house is combined into the cavity volume that holds electric core, its horizontal edge fits, before being positioned at, the left side of rear cover body, before right two ends are respectively equipped with protrusion, the connecting portion on rear cover body surface, to go up by connecting portion, before the L shaped flange of lower house, before rearward end is inlaid in, in the rear cover body, be equipped with the respective connecting I on described connecting portion and the horizontal edge, pass the connecting hole I by screw rod, thereby adopt the locking nut tie down screw to go up again, lower house and before, rear cover body firmly connects.

Wherein, be equipped with on described connecting portion and the horizontal edge for the interconnective respective connecting II of battery intermodule.

In addition, described forward and backward lid middle part is provided with and is used for lug that the upper and lower casing front and back ends is clamped.

The beneficial effects of the utility model are: be respectively equipped with the connecting portion that protrudes forward and backward top surface by the left and right two ends at forward and backward lid, these connecting portions are inlaid in the forward and backward end of the L shaped flange of upper and lower casing in the forward and backward lid respectively, on connecting portion and horizontal edge, be equipped with the respective connecting I, thereby pass the connecting hole I, adopt the locking nut tie down screw that upper and lower casing firmly is connected with forward and backward lid again by screw rod; Said structure has effectively guaranteed the cramped construction of battery module integral body, after module is loaded to battery case, module is not contacted with the upper and lower casing of intermodule metal part, module metal part does not come in contact with battery case, battery assembling back insulating protection effect be can reach, stability and fail safe when using improved.In addition, place, the left and right two ends of the forward and backward lid of module plastic cement is provided with the connecting portion that protrudes forward and backward lid respectively, when with after upper and lower casing is connected, connecting portion then protrudes the metal upper and lower casing, when module and module are stacked, can make to form ventilation gap between the module naturally, because module thickness remains between the 20-60mm substantially, so internal heat is easy to along with metal-back comes out, help the battery heat radiation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a structure broken away view of the present utility model;

Fig. 3 is the johning knot composition between module and the module in the utility model.

Embodiment

With reference to Fig. 1, Fig. 2, the batteries of electric automobile modular structure, comprise on the metal that is packaged in outside the electric core 5, lower house 1,2 and plastic cement before,

rear cover body

3,4, on described, lower house 1,2 left sides, right two ends are respectively equipped with L shaped flange, wherein go up, lower house 1, the vertical edge 6 of L shaped flange is combined into the cavity volume that holds electric core 5 in 2, its horizontal edge 7 fits, before being positioned at, rear cover body 3, a left side of 4, before right two ends are respectively equipped with protrusion, rear cover body 3, the connecting portion 8 on 4 surfaces, to go up by connecting portion 8, lower house 1, before the 2L shape flange, before rearward end is inlaid in, rear cover body 3, in 4, be equipped with respective connecting I 9 on described connecting portion 8 and the horizontal edge 7, pass connecting hole I 9 by screw rod 10, thereby adopt locking nut 11 tie down screws 10 to go up again, lower house 1,2 and before,

rear cover body

3,4 firmly connect.

The connecting portion 8 that protrudes forward and backward

lid

3,4 surfaces is set respectively by the left and right two ends at forward and backward

lid

3,4, these connecting portions 8 are inlaid in the forward and backward end of L shaped flange in the upper and lower casing 1,2 in the forward and backward

lid

3,4 respectively, on connecting portion 8 and horizontal edge 7, be equipped with respective connecting I 9, thereby pass connecting hole I 9, adopt locking nut 11 tie down screws 10 that upper and lower casing 1,2 firmly is connected with forward and backward

lid

3,4 again by screw rod 10; Said structure has effectively guaranteed the cramped construction of battery module integral body, after module is loaded to battery case, module is not contacted with the upper and lower casing 1,2 of intermodule metal part, module metal part does not come in contact with battery case, battery assembling back insulating protection effect be can reach, stability and fail safe when using improved.In addition, place, module plastic cement forward and backward

lid

3,4 left and right two ends is provided with the connecting portion 8 that protrudes forward and backward lid respectively, when with after upper and lower casing 1,2 is connected, 8 of connecting portions protrude metal upper and lower casing 1,2, when module and module are stacked, can make to form ventilation gap between the module naturally, because module thickness remains between the 20-60mm substantially, so internal heat is easy to along with metal-back comes out, help the battery heat radiation.

As shown in Figure 3, in the utility model, be equipped with on described connecting portion 8 and the horizontal edge 7 for the interconnective respective connecting II 12 of battery intermodule, the connecting hole II 12 of passing each module by screw rod 14 connects them with plurality of modules connection back and by locking nut; Module is no matter be to keep flat, be sidelong and place vertically can by modes such as screw rod can be very flexible module and module, module and battery case are fixed together, the while battery maintenance is dismantled all very convenient; In addition, the pole 15 on the described electric core 5 exceeds front cover body 3, and is more flexible when using link 16 with the intermodule connection in series-parallel.

In the utility model, described forward and backward

lid

3,4 middle parts are provided with and are used for lug 13 that upper and lower casing 1,2 front and back ends are clamped; Can further upper and lower casing 1,2 front and back ends be installed in the forward and backward

lid

3,4 by lug 13.

The utility model is rational in infrastructure, compact, good heat dissipation effect, be convenient to flexibly assembling and battery maintenance dismounting, and is fixing reliable, is a kind of batteries of electric automobile modular structure that is widely used in.

Claims

1. batteries of electric automobile modular structure, it is characterized in that: comprise being packaged on the outer metal of electric core (5), lower house (1,2) and before the plastic cement, rear cover body (3,4), on described, lower house (1,2) left side, right two ends are respectively equipped with L shaped flange, wherein go up, lower house (1,2) vertical edge of L shaped flange (6) is combined into the cavity volume that holds electric core (5), its horizontal edge (7) fits, before being positioned at, rear cover body (3,4) a left side, before right two ends are respectively equipped with protrusion, rear cover body (3,4) Biao Mian connecting portion (8), to go up by connecting portion (8), lower house (1,2) L shaped flange before, before rearward end is inlaid in, rear cover body (3,4) in, be equipped with respective connecting I (9) on described connecting portion (8) and the horizontal edge (7), pass connecting hole I (9) by screw rod (10), adopt locking nut (11) tie down screw (10) again thus will go up, lower house (1,2) and before, rear cover body (3,4) firmly connect.

2. batteries of electric automobile modular structure according to claim 1 is characterized in that: be equipped with on described connecting portion (8) and the horizontal edge (7) for the battery interconnective respective connecting II of intermodule (12).

3. batteries of electric automobile modular structure according to claim 1 is characterized in that: described forward and backward lid (3,4) middle part is provided with and is used for lug (13) that upper and lower casing (1,2) front and back ends is clamped.