A battery module assembly system

Abstract

The present invention relates to an assembly system (1), wherein a square-formed stud is used in battery pack modules, having the advantages of preventing torque loss, maintaining the mechanical endurance and mechanical integrity of the module, and facilitating the stacking operation in the process of stacking the battery cells into modules by means of its geometry.

Description

[0001] DESCRIPTION

[0002] A BATTERY MODULE ASSEMBLY SYSTEM

[0003] Technical Field

[0004] The present invention relates to an assembly system, wherein a square-formed stud is used in battery pack modules, having the advantages of preventing torque loss, maintaining the mechanical endurance and mechanical integrity of the module, and facilitating the stacking operation in the process of stacking the battery cells into modules by means of its geometry.

[0005] Background of the Invention

[0006] Battery pack modules are structures made of many different materials that play a critical role in energy storage technologies, where these different parts come together to form a closed box, which also contains battery cells. They are used in many different fields, especially in the energy sector, as well as in the automotive, white goods, defense industry and aerospace sectors. Different joining and assembly methods are used when forming these modules into a closed box. It also has a structure in which more than one battery cell is brought together and stacked, which is desired to be in the same alignment. In addition, when assembling the modules, the cells are tightened with a certain force after being stacked and are subjected to many different vibration and shock tests as required by the regulations. When assembling battery modules, there are difficulties in the process of stacking the cells and tightening them with a certain force due to tolerance accumulation. This situation is observed especially in module types where pouch cells are used. For this reason, there is a need for a new assembly system that will eliminate the said deficiencies. The Chinese patent document no. CN116404329A, an application included in the state of the art, discloses a battery box design. The invention subject to the said Chinese patent document belongs to the technical field of lithium battery box bodies, and discloses a waterproof airtight lithium battery box body and a production process thereof, the battery box body adopts a semi-open structure design, and sequentially comprises a lower box body, a lower box body sealing strip, an upper box body, an upper box body sealing strip and an upper cover from bottom to top; a module mounting plate is arranged in the lower box body, and the module mounting plate is of a hollow #-shaped structure; the upper box body is of a big-end-down stepped square structure, a maintenance switch is arranged on the side face of the lower end of the upper box body, and a charging interface, a discharging interface, a communication interface and a heating interface which are adjacent are formed in the side face of the upper end of the upper box body. The invention also discloses a production process of the waterproof airtight lithium battery box body, which comprises the working procedures of blanking, laser cutting, bending, welding, polishing, electrophoresis spraying, sealing strip mounting, waterproof airtight testing and the like, and is widely applied to the technical field of lithium batteries in non-road engineering vehicles.

[0007] Summary of the Invention

[0008] An object of the present invention is to realize an assembly system, wherein a square-formed stud is used in battery pack modules, having the advantages of preventing torque loss, maintaining the mechanical endurance and mechanical integrity of the module, and facilitating the stacking operation in the process of stacking the battery cells into modules by means of its geometry.

[0009] Detailed Description of the Invention

[0010] “A Battery Module Assembly System” realized to fulfil the objective of the present invention is shown in the figure attached, in which: Figure l is a general view of the inventive system.

[0011] The components illustrated in the figure are individually numbered, where the numbers refer to the following:

[0012] 1. Assembly system

[0013] 2. Module

[0014] 3. Groove

[0015] 4. Stud

[0016] The inventive assembly system (1) which prevents torque loss that occurs during the assembly of battery pack modules by being brought together comprises; at least one module (2) which contains at least one encased pouch-type battery cell arranged side by side within the battery pack, has a rectangular box form and is obtained by covering the bottom, top and side surfaces thereof with covers; at least one groove (3) which has a square form, is hollow in the center and is located at the corners of the module (2) covers; and at least one stud (4) which is configured to enable the bottom, top and side covers of the module (2) to be connected to each other and held together by entering into the groove (3) and has a square form.

[0017] The groove (3) included in the inventive assembly system (1) is of a dimension that allows a stud (4) having a square form to be inserted therein and the rotational movement of the stud (4) to be prevented.

[0018] The stud (4) included in the inventive assembly system (1) is a stemless and headless screw having a body of square form with a cylindrical thread formed on both ends. The stud (4) enables the space used for the connection to be reduced and the torque loss that will occur due to its shape to be prevented by entering into the grooves (3) located in the corners of the cover in order to enable the module (2) covers to be assembled to each other. The stud (4) enters into the groove (3) formed on the edge of the module (2) and a metric nut of suitable diameter is tightened to the thread located on the end outside the groove (3). A part with a large surface area for the process of tightening the module (2) is placed on the stud (4).

[0019] Industrial Application of the Invention By means of the inventive assembly system (1), especially pouch-type battery cells can be grouped in a more organized manner. The torque loss that is prevented by the square-formed stud (4) that will occur when the module is tightened after the collection process will be prevented. After closing the upper and lower covers, a welding surface will be obtained, and the mechanical structure will be strengthened by creating a mechanical chassis inside the module.

[0020] Within these basic concepts; it is possible to develop various embodiments of the inventive “A Battery Module Assembly System (1)”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. The assembly system (1) which prevents torque loss that occurs during the assembly of battery pack modules by being brought together; characterized in that it comprises at least one module (2) which contains at least one encased pouch-type battery cell arranged side by side within the battery pack, has a rectangular box form and is obtained by covering the bottom, top and side surfaces thereof with covers; at least one groove (3) which has a square form, is hollow in the center and is located at the corners of the module (2) covers; and at least one stud (4) which is configured to enable the bottom, top and side covers of the module (2) to be connected to each other and held together by entering into the groove (3) and has a square form.

2. A system (1) according to Claim 1; characterized by the groove (3) which is of a dimension that allows a stud (4) having a square form to be inserted therein and the rotational movement of the stud (4) to be prevented.

3. A system (1) according to Claim 1 or 2; characterized by the stud (4) which is a stemless and headless screw having a body of square form with a cylindrical thread formed on both ends.

4. A system (1) according to any one of the preceding claims; characterized by the stud (4) which enables the space used for the connection to be reduced and the torque loss that will occur due to its shape to be prevented by entering into the grooves (3) located in the corners of the cover in order to enable the module (2) covers to be assembled to each other.

5. A system (1) according to any one of the preceding claims; characterized by the stud (4) which enters into the groove (3) formed on the edge of the module (2)and a metric nut of suitable diameter is tightened to the thread located on the end outside the groove (3).

6. A system (1) according to any one of the preceding claims; characterized by the stud (4) on which a part with a large surface area for the process of tightening the module (2) is placed.

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