A battery pack box

Abstract

The present invention relates to a battery pack box (1) which is used for enclosing battery modules and is obtained by fixing the end plate and the side plates to each other by means of grooves and lugs located thereon.

Description

[0001] DESCRIPTION

[0002] A BATTERY PACK BOX

[0003] Technical Field

[0004] The present invention relates to a battery pack box which is used for enclosing battery modules and is obtained by fixing the end plate and the side plates to each other by means of grooves and lugs located thereon.

[0005] Background of the Invention

[0006] Battery pack modules are structures that play a critical role in energy storage technologies, manufactured from many different materials, where these different parts form a closed box by being combined and include battery cells therein. They are used in many different sectors such as automotive, white goods and defense industry and especially in batteries. Different joining and assembly methods are used when making the said battery modules into a closed box. Joining and assembly operations bring different process requirements along with them. Today, the characteristics of end plate and side plate joining assembly of battery packs often vary depending on design and manufacturing preferences, the type of battery arrangement used and the current use. The most common methods used worldwide are screw and bolt joining, joining by welding, joining by fastener or rivet, or a combination of the said methods.

[0007] Screw and bolt joining brings problems such as inefficiency in the process, material cost, increasing the total weight of the product along with it. Welding method has problems such as extra process investment cost, laser machine investment, process and validation parameter working difficulties, difficulties in disassembly, inability to reuse the disassembled parts, high material scrap rate. The fastener or rivet method has problems such as difficulties in disassembly, theinability to reuse the disassembled parts, high material scrap rate and inability to meet mechanical requirements as the size decreases. The adhesion method, on the other hand, has problems such as extra process investment cost, robot investment, process and validation parameter working difficulties, difficulties in disassembly, inability to reuse the disassembled parts and high material scrap rate.

[0008] The Chinese patent document no. CN203391608U, an application included in the state of the art, discloses a system based on increasing the power of the plates by reducing the production cost, in which the plates inside a battery module are fixed to each other by making grooves. The said invention concerns the side plates and support plates surrounding the cells inside the battery module of an electric vehicle, and the grooves made in the support plates being connected to the side plates with a close fit. The other plates that will be inserted into the grooves made in the plates are formed by embossing method. With this assembly method, it is aimed to reduce the processing cost of the plates, increase production efficiency, significantly improve the strength of the plates, reduce the stress intensity and reduce the form defects that may occur in the plates. The said invention also extends the service life by means of the aforementioned advantages.

[0009] Summary of the Invention

[0010] An object of the present invention is to realize a battery pack box which is used for enclosing battery modules and is obtained by fitting the lugs located on the other part and formed by metal form into the grooves formed on one of the end plate and side plate.

[0011] Detailed Description of the Invention

[0012] “A Battery Pack Box” realized to fulfil the objective of the present invention is shown in the figures attached, in which:Figure 1 is a perspective view of an open state of an inventive battery pack box.

[0013] Figure 2 is a perspective view of a closed state of an inventive battery pack box.

[0014] Figure 3 is a side view of the grooves in an inventive battery pack box. Figure 4 is a perspective view of the lug included in an inventive battery pack box.

[0015] The components illustrated in the figures are individually numbered, where the numbers refer to the following:

[0016] 1. Box

[0017] 2. End plate

[0018] 3. Side plate

[0019] 4. Groove

[0020] 5. Lug

[0021] 6. Main protrusion

[0022] 7. Auxiliary protrusion

[0023] 8. Embossing

[0024] An inventive battery pack box (1) which is used for enclosing battery modules comprises;

[0025] two end plates (2);

[0026] two side plates (3) which enable a box shape to be formed by being connected to the end plates (2);

[0027] a plurality of grooves (4) which are located on the two end plates (2) or on the two side plates (3);

[0028] a plurality of lugs (5) which are located at the ends of any two of the end plates (2) or the side plates (3) that do not comprise a groove (4) and comprise at least one main protrusion (6) that enables the connection of the plates (2, 3) to each other and the formation of the box shape by enteringinto the groove (4) and at least two auxiliary protrusions (7) located on both sides of the main protrusion (6); and

[0029] at least one embossing (8) which is used to increase the adhesion to the groove (4) by being located on the lug (5).

[0030] The two end plates (2) included in an inventive battery pack box (1) are fixed at their ends to the ends of the side plates (3). In this way, a box shape, in the center of which battery packs are placed and which surrounds the battery pack, is formed.

[0031] The two side plates (3) included in an inventive battery pack box (1) are fixed at their ends to the ends of the end plates (2). In this way, a box shape, in the center of which battery packs are placed and which surrounds the battery pack, is formed.

[0032] The groove (4) included in an inventive battery pack case (1) is located on the end plates (2) or on the side plates (3). The grooves (4) are positioned one below the other on the end plate (2) or on the side plate (3) they are located on, extend along the plate (2, 3) and are more than one in number. The grooves (4) are formed by T-shaped projections on the plate (2, 3) they are located on. The lugs (5) are connected to the grooves (4) by means of the main protrusions (6) and the auxiliary protrusions (7). In this way, the connection of the end plates (2) and the side plates (3) to each other is realized.

[0033] The lug (5) included in an inventive battery pack box (1) is formed by metal forming on the end plate (2) or side plate (3) it is located on. The embossing (8) located on the lug (5) is preferably located on the main protrusion (6). The auxiliary protrusions (7) are located on both sides of the main protrusion (6) and do not enter the groove (4) where the main protrusion (6) enters, but into the grooves (4) located on the sides of the groove (4) where the main protrusion (6)enters. In this way, a connection is provided between the protrusions (6, 7) of the lug (5) and the three grooves (4).

[0034] The embossing (8) included in an inventive battery pack box (1) is located on the lug (5) and can be round or in the form of an extension. By means of the embossing (8), the lug (5) enables the plates (2, 3) to be held to each other with a close fit by contacting the groove (4). The embossing (8) provides connection and engagement by being in different forms other than round and extension.

[0035] In an inventive battery pack case (1), the grooves (4) are preferably located on the end plates (2), while the lugs (5) formed by metal forming are located on the side plate (3). The plates (2, 3) on which the grooves (4) and lugs (5) are located are interchangeable. However, in order for the plates (2, 3) to be connected to each other, the groove (4) and the lugs (5) must be formed on different plates (2, 3). The connection of the plates (2,3) to each other is realized when the lugs (5) enter into the grooves (4) and the embossing (8) contacts the base of the groove (4).

[0036] Within these basic concepts; it is possible to develop various embodiments of the inventive “A Battery Pack Box (1)”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. A battery pack box (1) which is used for enclosing battery modules; characterized bytwo end plates (2);two side plates (3) which enable a box shape to be formed by being connected to the end plates (2);a plurality of grooves (4) which are located on the two end plates (2) or on the two side plates (3);a plurality of lugs (5) which are located at the ends of any two of the end plates (2) or the side plates (3) that do not comprise a groove (4) and comprise at least one main protrusion (6) that enables the connection of the plates (2, 3) to each other and the formation of the box shape by entering into the groove (4) and at least two auxiliary protrusions (7) located on both sides of the main protrusion (6); andat least one embossing (8) which is used to increase the adhesion to the groove (4) by being located on the lug (5).

2. A battery pack box (1) according to Claim 1; characterized by the two end plates (2) which are fixed at their ends to the ends of the side plates (3).

3. A battery pack box (1) according to Claim 2; characterized by the two side plates (3) which are fixed at their ends to the ends of the end plates (2).

4. A battery pack box (1) according to any one of the preceding claims; characterized by the grooves (4) which are positioned one below the other on the end plate (2) or on the side plate (3) they are located on, extend along the plate (2, 3) and are more than one in number.

5. A battery pack box (1) according to any one of the preceding claims; characterized by the grooves (4) which are formed by T-shaped projections on the plate (2, 3) they are located on.

6. A battery pack box (1) according to any one of the preceding claims; characterized by the lugs (5) which are connected to the grooves (4) by means of the main protrusions (6) and the auxiliary protrusions (7).

7. A battery pack box (1) according to any one of the preceding claims; characterized by the lug (5) which is formed by metal forming on the end plate (2) or side plate (3) it is located on.

8. A battery pack box (1) according to any one of the preceding claims; characterized by the embossing (8) which is located on the main protrusion (6).

9. A battery pack box (1) according to any one of the preceding claims; characterized by the auxiliary protrusions (7) which are located on both sides of the main protrusion (6) and do not enter the groove (4) where the main protrusion (6) enters, but into the grooves (4) located on the sides of the groove (4) where the main protrusion (6) enters.

10. A battery pack box (1) according to any one of the preceding claims; characterized by the embossing (8) which is located on the lug (5) and can be round or in the form of an extension.

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