CN211428252U

CN211428252U - Novel aluminum alloy box structure of lithium cell

Info

Publication number: CN211428252U
Application number: CN202020336012.2U
Authority: CN
Inventors: 戴斯德
Original assignee: Xiamen Dale Electric Co ltd
Current assignee: Xiamen Dale Electric Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-09-04
Anticipated expiration: 2030-03-17

Abstract

The utility model relates to a lithium cell technical field especially relates to a novel aluminum alloy box structure of lithium cell, including U type groove box, case lid and end cover, the case lid is located the upper end of U type groove box, and the end cover is located the both ends of U type groove box, through screw fixed connection between U type groove box and the case lid, all set up the C type groove that has the level to set up on U type groove box and the case lid, set up the screw with C type groove looks adaptation on the end cover, the end cover passes through screw and U type groove box and case lid fixed connection, the T type groove that has the level to set up is seted up to the bottom of U type groove box inner wall, the utility model provides a novel aluminum alloy box of lithium cell adopts package assembly, and the box principal material adopts the aluminum alloy to realize that lithium cell box weight is little, sturdy and durable in structure, atress is balanced, sealed good, heat dispersion is good, adjustable, the installation of being convenient for is overhauld, and its structural technology is good, does benefit to and realizes big batch, standardized production.

Description

Novel aluminum alloy box structure of lithium cell

Technical Field

The utility model relates to a lithium cell technical field especially relates to a novel aluminum alloy box structure of lithium cell.

Background

The high-capacity lithium battery is generally assembled in a sealed box body by a plurality of groups of battery cell modules, a battery management system BMS and the like, is matched with relevant connecting cables, joints and the like, and is widely applied to electric vehicles. The lithium battery box plays a sealing protection role for the internal parts such as the battery core module, the battery management system BMS and the like, and plays a key role in the service life of the lithium battery.

The conventional lithium battery box is generally made of carbon steel, so that the conventional lithium battery box has the advantages of large weight, more parts, complex structure and easy deformation in the welding process; the thin steel plate is stressed unevenly in the using process, so that the local deformation of the thin steel plate is easy to cause cracking or poor sealing, water enters, and the lithium battery is scrapped; surface anticorrosion treatment is required to affect the appearance; only the box cover can be opened, so that the installation and the maintenance are inconvenient; the structure has poor manufacturability, and is not beneficial to large-batch and standardized production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a novel aluminum alloy box body structure of a lithium battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel aluminum alloy box structure of lithium cell, includes U type groove box, case lid and end cover, and the case lid is located the upper end of U type groove box, and the end cover is located the both ends of U type groove box, pass through screw fixed connection between U type groove box and the case lid, all set up the C type groove that has the level to set up on U type groove box and the case lid, set up on the end cover with the screw of C type groove looks adaptation, the end cover passes through screw and U type groove box and case lid fixed connection, the T type groove that has the level to set up is seted up to the bottom of U type groove box inner wall, T type inslot interpolation is equipped with the bolt of vertical form, the head of bolt is located the inside in T type groove, and there is the nut.

Preferably, the contact position of the U-shaped groove box and the box cover is provided with a sealing strip, and the contact position of the end cover and the U-shaped groove box and the box cover is provided with a sealing strip.

Preferably, the upper end of the box cover is provided with a handle through a screw.

Preferably, the bolt is further sleeved with a U-shaped clamping plate and a gasket from bottom to top, and the gasket is located below the nut.

Preferably, the upper end of the end cover is provided with a breather valve, and the breather valve is communicated with the inside of the U-shaped groove box.

Preferably, the lower end of the end cover is also fixedly provided with an installation support lug, the section of the installation support lug is U-shaped, and the horizontal part of the installation support lug is provided with a screw hole.

Preferably, the U-shaped groove box, the box cover and the end cover are all made of aluminum alloy.

The utility model has the advantages that: the utility model provides a novel aluminum alloy box of lithium cell adopts package assembly, and the box principal material adopts the aluminum alloy to realize that lithium cell box weight is little, sturdy and durable structure, atress are balanced, sealed good, heat dispersion is good, need not do in addition anticorrosive, the appearance is pleasing to the eye, adjustable, the installation and maintenance of being convenient for, its structural technology nature is good, does benefit to and realizes big batch, standardized production.

Drawings

FIG. 1 is a schematic structural view of a conventional large capacity lithium battery case;

fig. 2 is an exploded structural view of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 3 is a schematic structural diagram of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 4 is a schematic cross-sectional structure view of a U-shaped groove box of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 5 is a schematic cross-sectional structure view of a case cover of a novel aluminum alloy case structure of a lithium battery provided by the present invention;

fig. 6 is a schematic view of a main view structure of a cell module of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 7 is a schematic top view of a cell module of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 8 is a schematic view of a partial cross-sectional structure of a novel aluminum alloy box structure of a lithium battery provided by the present invention;

fig. 9 is the utility model provides a novel aluminum alloy box structure of lithium cell's enlarged structure schematic diagram of I department in fig. 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Fig. 1, the containing box 6 that present conventional large capacity lithium cell box generally adopted carbon steel material to make, containing box 6 adopts the steel sheet to make into top surface open-ended cuboid structure, the fixed skeleton 8 that is provided with in bottom surface of containing box 6, the lower extreme fixedly connected with installation journal stirrup 7 of containing box 6's lateral wall, handle 5 is installed to containing box 6's lateral wall, case lid 1 is installed through screw 2 in containing box 6's upper end, still be provided with sealing strip 3 between case lid 1 and the containing box 6, containing box 6's inside still is provided with longeron 4, containing box 6's inside is through welded fastening has the fixing support 10 that is used for fixed electric core module 9. The lithium battery box body has the advantages of larger weight, more parts, more complex structure and easy deformation in the welding process; the thin steel plate is stressed unevenly in the using process, so that the local deformation of the thin steel plate is easy to cause cracking or poor sealing, water enters, and the lithium battery is scrapped.

Referring to fig. 2-9, a novel aluminum alloy box structure of lithium battery comprises a U-shaped groove box 1, a box cover 2 and an end cover 7, wherein the box cover 2 is located at the upper end of the U-shaped groove box 1, the end cover 7 is located at two ends of the U-shaped groove box 1, the U-shaped groove box 1 is fixedly connected with the box cover 2 through screws 3, C-shaped grooves 9 horizontally arranged are formed in the U-shaped groove box 1 and the box cover 2, screw holes matched with the C-shaped grooves 9 are formed in the end cover 7, the end cover 7 is fixedly connected with the U-shaped groove box 1 and the box cover 2 through screws 3, a T-shaped groove 10 horizontally arranged at the bottom end of the inner wall of the U-shaped groove box 1 is formed in the inner wall of the U-shaped groove box 1, a vertical bolt 12 is inserted into the T-shaped groove 10, the head of the bolt 12.

Further, U type groove box 1 and case lid 2 contact department are provided with sealing strip 5, end cover 7 is provided with sealing strip 5 with U type groove box 1, case lid 2 contact department.

Further, a handle 4 is installed at the upper end of the box cover 2 through a screw 3.

Further, still cup jointed U type splint 15 and gasket 14 from supreme down on bolt 12, gasket 14 is located the below of nut 13, and bolt 12 cooperatees with nut 13 and can fixes electric core module 11, and U type splint 15 and gasket 14 play the additional action to electric core module 11's fixed.

Furthermore, breather valve 6 is installed to the upper end of end cover 7, breather valve 6 is linked together with the inside of U type groove box 1.

Furthermore, the lower end of the end cover 7 is also fixedly provided with an installation support lug 8, the section of the installation support lug 8 is U-shaped, and the horizontal part of the installation support lug 8 is provided with a screw hole.

Furthermore, the U-shaped groove box 1, the box cover 2 and the end cover 7 are all made of aluminum alloy.

The novel aluminum alloy box body of lithium cell has cancelled the bottom of the case welding skeleton and the box inner longitudinal girder in the conventional lithium cell box body, simplifies the structure, optimizes into U type groove box 1, case lid 2 and the end cover 7 equipment of the left and right sides of making by the aluminum alloy and forms, need not do in addition that the surface is anticorrosive.

The U-shaped groove box 1 is integrally formed, the section of the U-shaped groove box 1 adopts a special structural design, a plurality of bosses are arranged on three main stressed parts of the U-shaped groove box 1, a C-shaped groove 9 is arranged at a proper position of the boss for reducing the weight, and the C-shaped groove 9 is used as an installation hole of the screw 3 at the same time as shown in figure 4; in order to facilitate the installation of the battery cell module 11 and be adjustable, a plurality of T-shaped grooves 10 are formed in proper positions of a side boss in the bottom face of the groove box, the battery cell module 11 is fixed in the U-shaped groove box through bolts 12, the U-shaped groove box 1 is made of aluminum alloy, the extrusion forming manufacturing process is adopted, the structure is firm and durable, the stress is balanced, the standardized production is realized, and bolt holes are formed in proper positions of the U-shaped groove box 1 for installation and connection.

Case lid 2 integrated into one piece, the cross-section adopts peculiar structural design, see figure 5, in order to improve bulk strength, the cross-section adopts concave-convex structure, similar flute structure, and the suitable position is equipped with C type groove 9, and the mounting hole as screw 3 simultaneously is regarded as in the weight reduction, and case lid 2 adopts the aluminum alloy material, extrusion manufacturing process, and sturdy and durable structure, the atress is balanced, and realizes standardized production, in order to install the hookup, case lid 2 suitable position is opened there is the bolt hole.

The end covers 7 on the left side and the right side are made of aluminum alloy plates, screw hole mounting holes and various connector mounting holes are formed in proper positions, blanking and punching are carried out at one time, the surface is smooth, and good sealing performance after assembly is guaranteed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A novel aluminum alloy box body structure of a lithium battery comprises a U-shaped groove box (1), a box cover (2) and end covers (7), wherein the box cover (2) is positioned at the upper end of the U-shaped groove box (1), the end covers (7) are positioned at two ends of the U-shaped groove box (1), the novel aluminum alloy box body structure is characterized in that the U-shaped groove box (1) and the box cover (2) are fixedly connected through screws (3), C-shaped grooves (9) which are horizontally arranged are respectively formed in the U-shaped groove box (1) and the box cover (2), screw holes matched with the C-shaped grooves (9) are formed in the end covers (7), the end covers (7) are fixedly connected with the U-shaped groove box (1) and the box cover (2) through the screws (3), T-shaped grooves (10) which are horizontally arranged are formed in the bottom end of the inner wall of the U-shaped groove box (1), vertical bolts (12) are inserted in the T-shaped grooves (10), and the heads of the bolts (12), the upper end of the bolt (12) is connected with a nut (13) through threads.

2. The novel aluminum alloy box body structure of the lithium battery as claimed in claim 1, wherein the contact part of the U-shaped groove box (1) and the box cover (2) is provided with a sealing strip (5), and the contact part of the end cover (7) and the U-shaped groove box (1) and the box cover (2) is provided with the sealing strip (5).

3. The novel aluminum alloy box structure for the lithium battery as claimed in claim 1, wherein the upper end of the box cover (2) is provided with a handle (4) through a screw (3).

4. The novel aluminum alloy box structure for the lithium battery as claimed in claim 1, wherein the bolt (12) is further sleeved with a U-shaped clamping plate (15) and a gasket (14) from bottom to top, and the gasket (14) is located below the nut (13).

5. The novel aluminum alloy box structure of the lithium battery as claimed in claim 1, wherein the upper end of the end cover (7) is provided with a breather valve (6), and the breather valve (6) is communicated with the inside of the U-shaped groove box (1).

6. The novel aluminum alloy box structure for the lithium battery as claimed in claim 1, wherein the lower end of the end cap (7) is further fixedly provided with a mounting support lug (8), the cross section of the mounting support lug (8) is U-shaped, and a screw hole is formed in the horizontal part of the mounting support lug (8).

7. The novel aluminum alloy box structure of the lithium battery as claimed in claim 1, wherein the U-shaped groove box (1), the box cover (2) and the end cover (7) are all made of aluminum alloy.