阅读说明：本技术 一种动力电池包结构 (Power battery package structure ) 是由 姚峰 李晶 伍小宏 曹新成 于 2019-09-30 设计创作，主要内容包括：本发明提供一种应用于动力电池技术领域的动力电池包结构,包括箱体(1),所述的箱体(1)包括底板(2)和侧板(3),底板(2)内设置冷却水道(4),底板(2)上表面设置多个箱体隔断(5),每相邻两个箱体隔断(5)之间设置一个电池模组(6),每个箱体隔断(5)上设置多个螺孔(12),本发明的动力电池包结构,结构简单,方便实现电池模组布置固定,同时电池包的组装、拆卸均极为方便,水冷效果得到提升,从而提高电池包装配效率及售后维护能力,保证电池使用环境,提升电池使用寿命,增强电池包系统安全性能。(The invention provides a power battery pack structure applied to the technical field of power batteries, which comprises a box body (1), wherein the box body (1) comprises a bottom plate (2) and side plates (3), a cooling water channel (4) is arranged in the bottom plate (2), a plurality of box body partitions (5) are arranged on the upper surface of the bottom plate (2), a battery module (6) is arranged between every two adjacent box body partitions (5), and a plurality of screw holes (12) are formed in each box body partition (5).)

1. A power battery package structure which characterized in that: including box (1), box (1) include bottom plate (2) and curb plate (3), set up cooling water course (4) in bottom plate (2), bottom plate (2) upper surface sets up a plurality of boxes and cuts off (5), sets up one battery module (6) between every two adjacent boxes cut off (5), sets up a plurality of screws (12) on every box cuts off (5).

2. The power battery pack structure of claim 1, wherein: the side plate (3) is provided with a cooling water channel water inlet (7) and a cooling water channel water outlet (8), and the cooling water channel water inlet (7) and the cooling water channel water outlet (8) are communicated with the cooling water channel (4) respectively.

3. The power battery pack structure according to claim 1 or 2, wherein: the power battery pack structure comprises a plurality of PTC pressing plates (9), and through holes (10) corresponding to the positions and the number of screw holes in each box body partition (5) are formed in each PTC pressing plate (9).

4. The power battery pack structure of claim 3, wherein: each box partition (5) is provided with a PTC pressing plate (9) above, each fastening bolt (11) penetrates through a through hole (10) of each PTC pressing plate (9) to be connected with a screw hole (12) on the corresponding box partition (5), one side of each PTC pressing plate (9) is pressed on one battery module (6), and the other side of each PTC pressing plate (9) is pressed on the other battery module (6).

5. The power battery pack structure according to claim 1 or 2, wherein: the power battery pack structure further comprises a box cover (13), and the box cover (13) is buckled on the side plate (3).

6. The power battery pack structure according to claim 1 or 2, wherein: power battery package structure still include a plurality of long aluminium bars (14) and a plurality of short aluminium bars (15), long aluminium bar (14) and short aluminium bar (15) and battery module (6) battery utmost point post welded connection.

7. The power battery pack structure according to claim 1 or 2, wherein: and each box body partition (5) on the bottom plate (2) of the power battery pack structure is internally provided with a cooling branch, and a water inlet of each cooling branch is communicated with a cooling water channel (4).

8. The power battery pack structure according to claim 1 or 2, wherein: the multi-channel box body partition structure is characterized in that a plurality of box body partitions (5) on the bottom plate (2) of the box body (1) are arranged in parallel, and each box body partition (5) is respectively and vertically arranged with the bottom plate (2).

9. The power battery pack structure according to claim 1 or 2, wherein: the side plate (3) of the box body (1) comprises a front side plate (16) and a rear side plate (17), the front part of each battery module (6) is abutted against the inner wall of the front side plate (16), and the rear part of each battery module (6) is abutted against the inner wall of the rear side plate (17).

Technical Field

The invention belongs to the technical field of power batteries, and particularly relates to a power battery pack structure.

Background

The power battery is a key component of the automobile. Current power battery package adopts the battery to organize the modularization mode and constitutes the battery module and install, and the battery box adopts the steel sheet material to bend welding concatenation or stamping forming and forms, bears a plurality of battery modules through the panel beating box and forms the battery package. The sheet metal box body has the following problems that the vibration cracking phenomenon possibly exists due to the fact that the box body is made of sheet metal, and the airtight problem of the battery pack can be caused. If single battery is unusual in addition, when needing to overhaul to tear open and trade, need take out whole module, if there is the structure to glue with bottom half bonding, still need involve tearing open of whole battery package and trade, after sale maintenance cost is high, can't satisfy the demand.

disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a simple structure conveniently realizes that the battery module arranges fixedly, and the equipment of battery package, dismantlement are all very convenient simultaneously, and the water-cooling effect obtains promoting to improve battery package and join in marriage efficiency and after-sales maintenance ability, guarantee battery service environment, promote battery life, reinforcing battery package system security performance's power battery package structure.

To solve the technical problems, the invention adopts the technical scheme that:

The invention relates to a power battery pack structure which comprises a box body, wherein the box body comprises a bottom plate and side plates, a cooling water channel is arranged in the bottom plate, a plurality of box body partitions are arranged on the upper surface of the bottom plate, a battery module is arranged between every two adjacent box body partitions, and a plurality of screw holes are formed in each box body partition.

The side plate is provided with a cooling water channel water inlet and a cooling water channel water outlet, and the cooling water channel water inlet and the cooling water channel water outlet are respectively communicated with a cooling water channel.

the power battery pack structure comprises a plurality of PTC pressing plates, and through holes corresponding to the positions and the number of the screw holes in the partition of each box body are formed in each PTC pressing plate.

And a PTC pressing plate is arranged above each box partition, each fastening bolt penetrates through a through hole of the PTC pressing plate to be connected with a screw hole on the corresponding box partition, one side of each PTC pressing plate is pressed on one battery module, and the other side of each PTC pressing plate is pressed on the other battery module.

the power battery pack structure further comprises a box cover, and the box cover is buckled on the side plate.

The power battery package structure still include a plurality of long aluminium bars and a plurality of short aluminium bars, long aluminium bar and short aluminium bar and battery module's battery utmost point post welded connection.

And a cooling branch is respectively arranged in each box body partition on the bottom plate of the power battery pack structure, and a water inlet of each cooling branch is respectively communicated with a cooling water channel.

the multiple box partitions on the bottom plate of the box body are arranged in parallel, and each box partition is respectively and vertically arranged with the bottom plate.

The side plates of the box body comprise a front side plate and a rear side plate, the front part of each battery module abuts against the inner wall of the front side plate, and the rear part of each battery module abuts against the inner wall of the rear side plate.

By adopting the technical scheme of the invention, the following beneficial effects can be obtained:

According to the power battery pack structure, the cooling water channel is arranged on the bottom plate, and cooling water in the cooling water channel flows and circulates to cool the battery module. And the setting that the box cuts off for a plurality of battery modules realize piling up in order in the box, and a plurality of battery modules are along the X of box to the pile, and the pile is compact, and is fixed reliable, has guaranteed the steadiness of battery module in the box inside. And a plurality of electric cores of every battery module then follow the Y direction pile of box, the aforesaid is arranged, and more conventional arrangement along the structure of X direction arrangement electric core, every battery module can hold 2 at least electric cores more, under same spatial condition, through effectual maximize utilization arrangement mode, has increased the energy of battery package simultaneously. Meanwhile, the fastening bolts realize the connection of the PTC pressure plate and the box body partition, the limit fixing requirement of the battery module is effectively met, the extra space is not occupied, and the cost is not increased. The power battery pack structure is simple in structure, the battery modules are conveniently arranged and fixed, meanwhile, the battery pack is extremely convenient to assemble and disassemble, and the water cooling effect is improved, so that the battery pack assembly efficiency and the after-sale maintenance capability are improved, the service environment of the battery is ensured, the service life of the battery is prolonged, and the safety performance of a battery pack system is enhanced.

drawings

The contents of the description and the references in the drawings are briefly described as follows:

Fig. 1 is an exploded view of the power battery pack structure according to the present invention;

FIG. 2 is a schematic structural diagram of a case of the power battery pack structure according to the present invention;

FIG. 3 is a schematic cross-sectional view of the case of the power battery pack structure according to the present invention;

In the drawings, the reference numbers are respectively: 1. a box body; 2. a base plate; 3. a side plate; 4. a cooling water channel; 5. the box body is isolated; 6. a battery module; 7. a water inlet of the cooling water channel; 8. a water outlet of the cooling water channel; 9. a PTC platen; 10. a through hole; 11. fastening a bolt; 12. a screw hole; 13. a box cover; 14. long aluminum bars; 15. short aluminium bars; 16. a front side plate; 17. a rear side plate; 18. a flange surface of the box body; 19. a case cover flange surface; 20. and (7) sealing the glue.

Detailed Description

The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:

As shown in fig. 1-3, the invention relates to a power battery pack structure, which comprises a box body 1, wherein the box body 1 comprises a bottom plate 2 and side plates 3, a cooling water channel 4 is arranged in the bottom plate 2, a plurality of box body partitions 5 are arranged on the upper surface of the bottom plate 2, a battery module 6 is arranged between every two adjacent box body partitions 5, and a plurality of screw holes 12 are arranged on each box body partition 5. Above-mentioned structure sets up the cooling water course on the bottom plate, and the cooling water in the cooling water course flows and circulates, realizes the cooling to battery module. And the setting that the box cuts off for a plurality of battery modules realize piling up in order in the box, and a plurality of battery modules are along the X of box to the pile, and the pile is compact, and is fixed reliable, has guaranteed the steadiness of battery module in the box inside. And a plurality of electric cores of every battery module then follow the Y direction pile of box, the aforesaid is arranged, and more conventional arrangement along the structure of X direction arrangement electric core, every battery module can hold 2 at least electric cores more, under same spatial condition, through effectual maximize utilization arrangement mode, has increased the energy of battery package simultaneously. Meanwhile, the fastening bolts realize the connection of the PTC pressure plate 9 and the box body partition, and the limit fixing requirements of the battery module are effectively met. The power battery pack structure is simple in structure, the battery modules are conveniently arranged and fixed, meanwhile, the battery pack is extremely convenient to assemble and disassemble, and the water cooling effect is improved, so that the battery pack assembly efficiency and the after-sale maintenance capability are improved, the battery service environment is ensured, the service life of the battery is prolonged, and the safety performance of a battery pack system is enhanced.

The side plate 3 is provided with a cooling water channel water inlet 7 and a cooling water channel water outlet 8, and the cooling water channel water inlet 7 and the cooling water channel water outlet 8 are respectively communicated with the cooling water channel 4. Above-mentioned structure, cooling water course water inlet 7 and cooling water course delivery port 8 realize the intercommunication of the cooling water course and the cooling water supply part of box, realize the pump sending, flow, the circulation of cooling water, satisfy the cooling requirement.

the power battery pack structure comprises a plurality of PTC pressing plates 9, and through holes 10 corresponding to the positions and the number of the screw holes in each box body partition 5 are formed in each PTC pressing plate 9. A PTC pressing plate 9 is arranged above each box body partition 5, each fastening bolt 11 penetrates through a through hole 10 of each PTC pressing plate 9 to be connected with a screw hole 12 on the corresponding box body partition 5, one side of each PTC pressing plate 9 is pressed on one battery module 6, and the other side of each PTC pressing plate 9 is pressed on the other battery module 6. Above-mentioned structure sets up a PTC clamp plate 9 between every two adjacent battery modules, cuts off the connection of the corresponding screw on through the fastening bolt that passes PTC clamp plate 9 and the box that corresponds, realizes fixing between battery module and the box, the follow-up installation of being convenient for.

The power battery pack structure further comprises a box cover 13, and the box cover 13 is buckled on the side plate 3. According to the structure, after the box cover is buckled, the battery module is sealed, and a complete battery pack is formed. And the box body and the box cover of the battery pack are sealed, because the box body flange surface is arranged on the box body, the box cover flange surface is arranged on the box cover, and sealant is arranged and filled in the grooves of the box body flange surface 18 and the box cover flange surface 19, so that the box body and the box cover of a metal plate are sealed after being pressed, and the box body and the box cover are fastened and connected through rivets after being pressed, thereby forming a reliable battery pack.

According to the structure, the box body is connected with the box cover, the rivet nut is arranged on the box body and the hexagon bolt is arranged on the box cover, compared with a sealing gasket, the box body and the box cover are fastened by rivet pulling through the blind rivet, the sealing gasket is replaced by the sealing adhesive 20 on the flange surface of the box body, the cost is greatly reduced compared with that of the sealing gasket, and the bolts, the nuts and the corresponding weight are reduced.

Power battery package structure still include a plurality of long aluminium bars 14 and a plurality of short aluminium bars 15, long aluminium bars 14 and short aluminium bars 15 and battery module 6's battery utmost point post welded connection. According to the structure, the battery pole columns of the battery module are welded with the short aluminum bars and the long aluminum bars of the battery in sequence, so that the battery pack series loop is realized. The connection reliability and the stable performance of the battery pack structure in work are ensured.

And each box body partition 5 on the bottom plate 2 of the power battery pack structure is internally provided with a cooling branch, and a water inlet of each cooling branch is communicated with a cooling water channel 4. Above-mentioned structure through the setting of cooling branch pipe for the cooling water in the cooling water course can get into the cooling branch pipe and prevail, circulate, thereby to battery module side cooling, effectively improve cooling efficiency and effect.

the multiple box partitions 5 on the bottom plate 2 of the box body 1 are arranged in parallel, and each box partition 5 is respectively and vertically arranged with the bottom plate 2. Therefore, when the battery module is arranged between the two box partitions, the bottom of the battery module is reliably contacted with the bottom plate of the box, the side face of each side of the battery module is reliably contacted with the side face of one corresponding box partition, and limiting and cooling effects are improved.

The side plate 3 of the box body 1 comprises a front side plate 16 and a rear side plate 17, the front part of each battery module 6 abuts against the inner wall of the front side plate 16, and the rear part of each battery module 6 abuts against the inner wall of the rear side plate 17. With the structure, each battery module is pressed and fixed in the Y direction (the Y direction refers to the direction extending from the position of the front side plate 16 to the position of the rear side plate 17, the X direction is the direction horizontal to the Y direction, and the Z direction is the direction vertical to the Y direction) through the front side plate 16 and the rear side plate 17, so that reliable limiting is realized.

According to the power battery pack structure, the cooling water channel is arranged on the bottom plate, and cooling water in the cooling water channel flows and circulates to cool the battery module. And the setting that the box cuts off for a plurality of battery modules realize piling up in order in the box, and a plurality of battery modules are along the X of box to the pile, and the pile is compact, and is fixed reliable, has guaranteed the steadiness of battery module in the box inside. And a plurality of electric cores of every battery module then follow the Y direction pile of box, the aforesaid is arranged, and more conventional arrangement along the structure of X direction arrangement electric core, every battery module can hold 2 at least electric cores more, under same spatial condition, through effectual maximize utilization arrangement mode, has increased the energy of battery package simultaneously. Meanwhile, the fastening bolts realize the connection of the PTC pressure plate and the box body partition, the limit fixing requirement of the battery module is effectively met, the extra space is not occupied, and the cost is not increased. The power battery pack structure is simple in structure, the battery modules are conveniently arranged and fixed, meanwhile, the battery pack is extremely convenient to assemble and disassemble, and the water cooling effect is improved, so that the battery pack assembly efficiency and the after-sale maintenance capability are improved, the service environment of the battery is ensured, the service life of the battery is prolonged, and the safety performance of a battery pack system is enhanced.

The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.