CN211743263U

CN211743263U - Power battery assembly for electric automobile

Info

Publication number: CN211743263U
Application number: CN202020867637.1U
Authority: CN
Inventors: 郭瑞杰; 李亚辉
Original assignee: Huasu Tianjin Technology Co ltd
Current assignee: Huasu Tianjin Technology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-10-23
Anticipated expiration: 2030-05-21

Abstract

The utility model provides a power battery assembly for electric automobile, including battery box, battery module, battery box includes upper box, lower box, and the bottom periphery of upper box is connected with the upper frame body, and the top periphery of lower box is connected with the lower frame body, and upper box lock is on lower box and is connected with the lower frame body through the upper frame body, is equipped with a plurality of holding tanks that are enclosed by the baffle in the lower box, and battery module places in the holding tank, and the outside of upper box is equipped with crashproof board, and crashproof board's both ends are connected with upper box lateral wall through the fastener; the battery module comprises an upper cover plate, a lower cover plate, side plates, end plates and a battery module, wherein the upper cover plate is arranged on the upper portion of the battery module, the lower cover plate is arranged on the lower portion of the battery module, the side plates are arranged on the front side and the rear side of the battery module, and the end plates are arranged at the left end and the right end of the battery module. The utility model discloses simple structure, good crashworthiness and heat dispersion have.

Description

Power battery assembly for electric automobile

Technical Field

The utility model relates to a power battery technical field especially relates to a power battery assembly for electric automobile.

Background

The power battery is used as a power source of the electric automobile, and determines key indexes of driving range, cost, service life, safety and the like of the whole automobile. The conventional power battery does not have an anti-collision structure, and is easy to deform or damage when an automobile is collided, bumped and the like. Moreover, the power battery has poor heat dissipation, which affects the service life of the power battery.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a power battery assembly for electric automobile simple structure, have good crashworthiness and heat dispersion.

The utility model provides a power battery assembly for electric automobile, including battery box, battery module, the battery box includes upper box, lower box, the bottom periphery of upper box is connected with the upper frame body, the top periphery of lower box is connected with the lower frame body, the upper box lock is on the lower box and passes through the upper frame body and be connected with the lower frame body, be equipped with a plurality of holding tanks that are enclosed by the baffle in the lower box, the battery module is placed in the holding tank, the outside of upper box is equipped with the crashproof board, the both ends of crashproof board pass through the fastener with the upper box lateral wall is connected;

the battery module comprises an upper cover plate, a lower cover plate, side plates, end plates and a battery module, wherein the upper cover plate is arranged on the upper portion of the battery module, the lower cover plate is arranged on the lower portion of the battery module, the side plates are arranged on the front side and the rear side of the battery module, and the end plates are arranged at the left end and the right end of the battery module.

Preferably, the anticollision board includes that arc portion, symmetry locate the horizontal part at arc portion both ends, be equipped with first spout on the horizontal part, the fastener wear to establish first spout and with go up the box lateral wall and connect, the horizontal part slides along the relative fastener of its horizontal extending direction, be equipped with in the first spout respectively with horizontal part inner wall, the first spring of fastener looks butt, the middle part of arc portion is equipped with the guide bar, the one end and the arc portion of guide bar are fixed, the other end of guide bar runs through go up the box lateral wall and follow the box lateral wall slides in the axis direction of guide bar relatively, be equipped with the second spring on the guide bar, the both ends of second spring respectively with arc portion, last box lateral wall looks butt.

In any of the above embodiments, preferably, the lower case has a plurality of connection frames circumferentially spaced at intervals on an outer side thereof.

In any of the above schemes, preferably, a sealing ring is arranged between the upper frame body and the lower frame body, a groove for accommodating the sealing ring is arranged on the lower frame body or the upper frame body, and a plurality of ribs are respectively arranged on the upper end surface and the lower end surface of the sealing ring at intervals.

In any of the above schemes, preferably, the inner circumference of the accommodating groove is provided with anti-collision cotton, and the anti-collision cotton is respectively adhered to the side wall of the partition board.

In any of the above schemes, preferably, the side plate, the end plate and the lower cover plate are respectively provided with a plurality of heat dissipation slots.

In any of the above schemes, preferably, the top of the upper box body is provided with an air inlet, the bottom of the lower box body is provided with an air outlet, and the air outlet is provided with a cooling fan.

Compared with the prior art, the utility model has the advantages and beneficial effects do:

1. through being equipped with crashproof board in the outside of last box, have the guard action to the periphery of battery box, direct striking battery box when avoiding bumping, leads to the battery box to take place to warp or damaged.

2. Through be equipped with upper cover plate, lower apron, curb plate and end plate in battery module's periphery, have the guard action to battery module, avoid direct striking battery module accidents such as explosion, improve the security.

3. A plurality of heat dissipation slotted holes are respectively arranged on the side plate, the end plate and the lower cover plate. The top of the upper box body is provided with an air inlet, the bottom of the lower box body is provided with an air outlet, and the air outlet is provided with a cooling fan. The heat generated by the battery module during working is sequentially and respectively dissipated out through the heat dissipation slotted holes, and the heat is taken out of the battery box under the action of the heat dissipation fan, so that the battery module is cooled.

The power battery assembly for electric vehicle of the present invention will be further described with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a battery box in a power battery assembly for an electric vehicle according to the present invention;

fig. 2 is a top view of the lower box body of the power battery assembly for the electric vehicle of the present invention;

fig. 3 is a schematic structural diagram of a battery module in the power battery assembly for an electric vehicle according to the present invention;

fig. 4 is a mounting structure diagram of the crash-proof plate in the power battery assembly for the electric vehicle according to the present invention;

fig. 5 is a schematic structural diagram of a sealing ring in a power battery assembly for an electric vehicle according to the present invention;

wherein: 1. an upper box body; 2. an upper frame body; 3. a lower box body; 4. a lower frame body; 5. a connecting frame; 6. an anti-collision plate; 61. an arc-shaped portion; 62. a horizontal portion; 621. a first chute; 7. a first spring; 8. a guide bar; 9. a second spring; 10. fixing a sleeve; 11. a guide sleeve; 12. a partition plate; 13. a seal ring; 131. a rib is protruded; 14. accommodating grooves; 15. a heat radiation fan; 16. an upper cover plate; 17. a side plate; 18. a battery module; 19. a lower cover plate; 20. an end plate; 21. and a heat dissipation slot.

Detailed Description

As shown in fig. 1, the utility model provides a power battery assembly for electric automobile, including battery box, battery module, battery box includes box 1, lower box 3, and the welding of the bottom periphery of going up box 1 has upper frame body 2, and the welding of the top periphery of lower box 3 has lower frame body 4, and upper box 1 lock can dismantle fixed connection on lower box 3 and through upper frame body 2 and lower frame body 4. Go up between box 1 and the lower box 3 through the structural style who adopts upper and lower framework 4 interconnect, increase the area of contact of box 1 and lower box 3, guarantee the connection structure intensity between box 1 and the lower box 3.

Wherein the power battery assembly is mounted below the chassis of the vehicle.

As shown in fig. 2, a plurality of accommodating grooves 14 surrounded by the partition plates 12 are provided in the lower case 3, and the battery modules are placed in the accommodating grooves 14. Through setting up battery module respectively in holding tank 14, separate each battery module group, avoid appearing the phenomenon of mutual friction, collision under external force jolts or the collision, still be convenient for fix power battery module simultaneously, make its card put in holding tank 14.

As shown in fig. 1 and 4, an anti-collision plate 6 is disposed on the outer side of the upper box 1, and both ends of the anti-collision plate 6 are connected to the side wall of the upper box 1 by fasteners. The fender 6 includes that arc portion 61, symmetry locate the horizontal part 62 at arc portion 61 both ends, is equipped with first spout 621 on the horizontal part 62, the fastener wear to establish first spout 621 and with it connects to go up 1 lateral wall of box, horizontal part 62 slides along the relative fastener of its horizontal extending direction, be equipped with respectively in the first spout 621 with horizontal part 62 inner wall, the first spring 7 of fastener looks butt, the middle part of arc portion 61 is equipped with guide bar 8, and the one end of guide bar 8 is fixed with arc portion 61, and the other end of guide bar 8 runs through 1 lateral wall of box and goes up 1 lateral wall relatively along the axis direction of guide bar 8 and slides, is equipped with second spring 9 on the guide bar 8, the both ends of second spring 9 respectively with arc portion 61, go up 1 lateral wall looks butt of box.

When the battery box bumps, the anti-collision plate 6 deforms under the action of external force, the arc-shaped part 61 deforms under extrusion, the middle part of the arc-shaped part 61 drives the guide rod 8 to slide along the axial direction of the guide rod relative to the side wall of the upper box body 1, and meanwhile, the horizontal part 62 slides along the horizontal extending direction of the horizontal part relative to the fastener, so that certain displacement space is provided for the deformation of the arc-shaped part 61. The greater the collision force to which the battery case is subjected, the greater the deformation of the impact prevention plate 6.

In this structure, the setting of crashproof board 6 has the guard action to the periphery of battery box, direct striking battery box when avoiding bumping, leads to the battery box to take place to warp or damaged. Anticollision board 6 is through establishing into domes, can take place to warp when the collision, and under the effect of first spring 7 and second spring 9, can convert into elastic potential energy with some impact that the battery box received, absorb certain impact force, play the effect of crashproof buffering, thereby reduce the impact force to the battery box, have the guard action to the battery box, reduce the impact action to power battery in the battery box simultaneously, avoid appearing because of too big actuating force battery of leading of impact force dangerous condition such as fire, explosion, the security performance is improved.

As shown in fig. 3, the battery module includes an upper cover plate 16, a lower cover plate 19, side plates 17, end plates 20, and a battery module 18, the upper cover plate 16 being disposed at an upper portion of the battery module 18, the lower cover plate 19 being disposed at a lower portion of the battery module 18, the side plates 17 being disposed at front and rear sides of the battery module 18, and the end plates 20 being disposed at left and right ends of the battery module 18.

In this structure, by providing the upper cover plate 16, the lower cover plate 19, the side plate 17, and the end plate 20 on the outer periphery of the battery module 18, the battery module 18 is protected from accidents such as explosion caused by direct impact on the battery module 18, and safety is improved.

Furthermore, a plurality of connecting frames 5 are circumferentially arranged at intervals on the outer side of the lower box body 3, and the connecting frames 5 are connecting parts between the battery box and the frame so as to fixedly install the battery box on the frame.

Further, as shown in fig. 5, a sealing ring 13 is disposed between the upper frame 2 and the lower frame 4 to ensure the sealing performance between the upper case 1 and the lower case 3, and has good waterproof and dustproof functions to prevent water or dust from entering the battery box. The lower frame body 4 or the upper frame body 2 is provided with a groove for accommodating the sealing ring 13, the upper end surface and the lower end surface of the sealing ring 13 are respectively provided with a plurality of convex ribs 131 at intervals, the contact area between the sealing ring 13 and the upper frame body 2 and the contact area between the sealing ring 13 and the lower frame body 4 are increased, and the sealing performance is improved.

Further, the inner periphery of the accommodating groove 14 is provided with anti-collision cotton, and the anti-collision cotton is respectively adhered to the side walls of the partition board 12. The setting of anticollision cotton has the guard action to power battery module, still can absorb partly impact force simultaneously, can avoid battery module to produce in holding tank 14 and rock direct and take place the striking with baffle 12.

Furthermore, a plurality of heat dissipation slots 21 are respectively arranged on the side plate 17, the end plate 20 and the lower cover plate 19. The top of the upper box body 1 is provided with an air inlet, the bottom of the lower box body 3 is provided with an air outlet, and the air outlet is provided with a cooling fan 15.

In this structure, the heat generated by the operation of the battery module 18 is sequentially and respectively dissipated through the heat dissipation slot 21, and the heat is taken out of the battery box under the action of the heat dissipation fan 15, so as to realize the effect of cooling the battery module.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a power battery assembly for electric automobile which characterized in that: the battery box comprises an upper box body and a lower box body, wherein the periphery of the bottom of the upper box body is connected with an upper frame body, the periphery of the top of the lower box body is connected with a lower frame body, the upper box body is buckled on the lower box body and is connected with the lower frame body through the upper frame body, a plurality of accommodating grooves surrounded by partition plates are formed in the lower box body, the battery module is placed in the accommodating grooves, an anti-collision plate is arranged on the outer side of the upper box body, and two ends of the anti-collision plate are connected with the side wall of the upper box body through fasteners;

2. The power battery assembly for the electric automobile according to claim 1, characterized in that: the anti-collision plate comprises an arc-shaped part and horizontal parts symmetrically arranged at two ends of the arc-shaped part, wherein a first sliding groove is formed in each horizontal part, a fastener is arranged in each first sliding groove in a penetrating mode and connected with the upper box side wall, the horizontal parts slide along the horizontal extending direction relative fasteners, first springs are arranged in the first sliding grooves and connected with the inner walls of the horizontal parts and the fasteners in an abutting mode respectively, a guide rod is arranged at the middle of the arc-shaped part, one end of the guide rod is fixed to the arc-shaped part, the other end of the guide rod penetrates through the upper box side wall and follows the axial direction of the guide rod, the upper box side wall slides relative to the axial direction, a second spring is arranged on the guide rod, and two ends of the second spring are respectively abutted to the arc-shaped part.

3. The power battery assembly for the electric automobile according to claim 1, characterized in that: and a plurality of connecting frames are arranged at intervals in the circumferential direction on the outer side of the lower box body.

4. The power battery assembly for the electric automobile according to claim 1, characterized in that: the sealing ring is arranged between the upper frame body and the lower frame body, a groove for accommodating the sealing ring is formed in the lower frame body or the upper frame body, and a plurality of convex ribs are arranged on the upper end face and the lower end face of the sealing ring at intervals respectively.

5. The power battery assembly for the electric automobile according to claim 1, characterized in that: the inner periphery of the containing groove is provided with anti-collision cotton, and the anti-collision cotton is adhered to the side wall of the partition plate in a sticking mode.

6. The power battery assembly for the electric automobile according to claim 1, characterized in that: and a plurality of heat dissipation slotted holes are respectively formed in the side plate, the end plate and the lower cover plate.

7. The power battery assembly for the electric automobile according to claim 6, wherein: the top of going up the box is equipped with the air intake, the bottom of box is equipped with the air outlet down, air outlet department is equipped with radiator fan.