Insertion aid, battery comprising the insertion aid, vehicle comprising the battery, method for manufacturing the insertion aid and the battery

Abstract

Insertion aid (100) for inserting a cell stack (200) of a battery into a housing of the battery, wherein the insertion aid (100) has a planar body (101) with a planar tongue (102) projecting beyond the planar body (101) for electrically insulating the cell stack (200) from the housing, wherein the tongue (102) is connected to the body (101) by a hinge mechanism (103). The insertion aid comprises a battery, the battery comprises a vehicle, and a method for manufacturing the insertion aid and the battery.

Description

[0001] The invention relates to an insertion aid, a battery comprising the insertion aid, a vehicle comprising the battery, and methods for manufacturing the insertion aid and the battery.

[0002] DE 10 2021 110 895 A1 discloses a battery in which a cell stack is inserted into a housing. To facilitate insertion, an insertion aid is provided, which may, for example, be made of fiber-reinforced plastic.

[0003] DE 10 2016 206 848 A1 discloses an assembly device for arranging a battery cell module in a battery housing. The assembly device comprises a frame element and guide elements. The frame element defines an insertion area for the battery cell module. The guide elements are arranged opposite each other on the frame element. The guide elements support the battery cell module in the insertion area. The frame element and the two guide elements are made of aluminum or steel.

[0004] DE 10 2021 110 895 A1 discloses a battery cell pack that is inserted into a battery module housing through an insertion opening in an insertion direction. The battery cell pack has two insertion aid layers that are elastically deformable orthogonally to its main extensional surface and which form outer surfaces of the battery cell pack that are opposite in thickness direction.

[0005] The insertion aid according to independent claim 1 electrically isolates a possible leakage current path between the cell stack and the housing in a radius area of ​​the housing.

[0006] The insertion aid for inserting a cell stack of a battery into a housing of the battery has a flat body with a flat tongue projecting over the flat body for electrical insulation of the cell stack from the housing, the tongue being connected to the body by a hinge mechanism.

[0007] Preferably, the folding mechanism includes a hinge that connects the tongue to the body.

[0008] Preferably, the body, the tongue, and the folding mechanism are made of one material.

[0009] Preferably, the folding mechanism between the body and the tongue is embossed into the insertion aid, particularly on both sides.

[0010] Preferably, the insertion aid comprises a die-cutting foil made of plastic, in particular PA with 30% glass fiber content or PC.

[0011] Preferably, the insertion aid has a material thickness of at least 0.2 mm in the area of ​​the folding mechanism, wherein the material thickness of the body and / or the tongue is greater than or equal to the material thickness of the folding mechanism.

[0012] Preferably, the body is configured to extend between a wall of the housing and a wall of the cell stack, particularly laterally, at the top or bottom of the housing and on the cell stack.

[0013] A battery, in particular a high-voltage battery, provides that the battery has a housing and a cell stack, with the insertion aid being arranged at least partially between the housing and the cell stack.

[0014] The vehicle design stipulates that the vehicle includes the battery.

[0015] A method for manufacturing a battery, in particular a high-voltage battery, provides that a cell stack and the insertion aid are provided, wherein the body of the insertion aid is placed against the cell stack, wherein the tongue of the insertion aid is folded towards the cell stack on the folding mechanism for placing the tongue against the cell stack, and wherein the cell stack and the insertion aid are inserted together into a housing of the battery.

[0016] Further advantageous embodiments can be found in the following description and the drawing. The drawing shows: Fig. 1 a schematic perspective representation of an insertion aid, Fig. 2 a schematic perspective representation of a cell stack with the insertion aid, Fig. 3 a flowchart of a process for manufacturing the insertion aid and a battery.

[0017] In Fig. Figure 1 shows a schematic perspective drawing of an insertion aid 100 for inserting a cell stack of a battery into a battery housing. In this example, the battery is a high-voltage battery, specifically for a vehicle.

[0018] The insertion aid 100 has a flat body 101 with a flat tongue 102 projecting over the flat body 101 for electrical insulation of the cell stack from the housing.

[0019] The tongue 102 is connected to the body 101 by a hinge mechanism 103.

[0020] In this example, the tongue 102 protrudes above the body 101 by a height 104, e.g. 25 mm.

[0021] In the example, body 101 has a height of 105, e.g., 105 mm.

[0022] In this example, body 101 has a length of 106, e.g. 570 mm.

[0023] The height 104 of the tongue, the height 105 of the body and the length 106 of the body are adapted in the example to the dimensions of the battery and the cell stack.

[0024] In the example, the folding mechanism 103 includes a hinge which connects the tongue 102 to the body 101.

[0025] In the example, the body 101, the tongue 102 and the folding mechanism 103 are made of one material.

[0026] The material has, for example, a CTI value suitable for insulating the cell stack from the housing. The material is, for example, from insulation group 2. The material has, for example, a dielectric strength >2.5kV.

[0027] The insertion aid 100 includes, for example, a die-cutting foil made of plastic, in particular PA with 30% glass fiber content or PC.

[0028] The insertion aid 100 has a material thickness of at least 0.2 mm in the area of ​​the folding mechanism 103. In this example, the material thickness of the body 101 and / or the tongue 102 is greater than or equal to the material thickness of the folding mechanism 103.

[0029] In this example, the folding mechanism is embossed on both sides of the insertion aid 100 between the body 101 and the tongue 102. This allows the insertion aid 100 to be used on both sides.

[0030] Fig. Figure 2 shows a schematic perspective representation of a cell stack 200 with the insertion aid 100.

[0031] The body 101 is configured to extend between a wall of the casing and a wall of the cell stack 200, particularly laterally within the casing and along the cell stack 200. In this example, after the folding mechanism 103 is flipped over, the tongue 102 rests on top of the cell stack 200.

[0032] It can be provided that the body 101 is designed to extend above or below in the casing and on the cell stack 200, with the tongue 102 resting laterally on the cell stack 200 after being folded over.

[0033] It can be provided that the battery, in particular the high-voltage battery, has the housing and the cell stack 200, wherein the insertion aid 100 is arranged at least sectionally between the housing and the cell stack 200.

[0034] In Fig. Figure 3 shows a flowchart of a process for manufacturing the insertion aid and the battery.

[0035] The procedure includes a step 301.

[0036] In step 301, the cell stack 200 and the insertion aid 100 are provided.

[0037] For example, the insertion aid 100 is cut from a material with the body 101 and the tongue 102, wherein the folding mechanism 103 is embossed into the material between the body 101 and the tongue 102, particularly on both sides.

[0038] The tongue 102 is positioned, for example, at a point, particularly in the middle with respect to the length of the body 101. In this example, the tongue 102 is positioned at the point on the body 101 that corresponds to a point on the cell stack 200 to be isolated, when the body 101 is in contact with the cell stack 200 as intended.

[0039] Then, step 302 is executed.

[0040] In step 302, the body 101 of the insertion aid 100 is attached to the cell stack 200.

[0041] Then, step 303 is executed.

[0042] In step 303, the tongue 102 of the insertion aid 100 is folded towards the cell stack 200 on the folding mechanism 103 to attach the tongue 102 to the cell stack 200.

[0043] Then, step 304 is executed.

[0044] In step 304, the cell stack 200 and the insertion aid 100 are inserted together into the battery housing.

Claims

[1] Insertion aid (100) for inserting a cell stack (200) of a battery into a housing of the battery, characterized by that the insertion aid (100) has a flat body (101) with a flat tongue (102) projecting beyond the flat body (101) for electrically insulating the cell stack (200) from the housing, wherein the tongue (102) is connected to the body (101) by a folding mechanism (103). [2] Insertion aid (100) according to claim 1, characterized by that the folding mechanism (103) comprises a hinge which connects the tongue (102) to the body (101). [3] Insertion aid (100) according to one of the preceding claims, characterized by that the body (101) and the tongue (102) and the folding mechanism (103) are formed from one material. [4] Insertion aid (100) according to one of the preceding claims, characterized bythat the folding mechanism between the body (101) and the tongue (102) is embossed in particular on both sides into the insertion aid (100). [5] Insertion aid (100) according to one of the preceding claims, characterized by that the insertion aid (100) comprises a punching film made of plastic, in particular PA with 30% glass fiber content or PC. [6] Insertion aid (100) according to one of the preceding claims, characterized by that the insertion aid (100) has a material thickness of at least 0.2 mm in the region of the folding mechanism (103), wherein the material thickness of the body and / or the tongue is thicker than or equal to the material thickness of the folding mechanism (103). [7] Insertion aid (100) according to one of the preceding claims, characterized by that the body (101) is designed to extend between a wall of the housing and a wall of the cell stack (200), in particular laterally, at the top or bottom of the housing and on the cell stack (200). [8] Battery, especially high-voltage battery, characterized by that the battery has a housing and a cell stack (200), wherein an insertion aid (100) according to one of claims 1 to 7 is arranged at least in sections between the housing and the cell stack (200). [9] Vehicle, characterized by that the vehicle comprises the battery according to claim 8. [10] Method for producing a battery, in particular a high-voltage battery, characterized by that a cell stack (200) and an insertion aid (100) according to one of claims 1 to 7 are provided (301), wherein the body (101) of the insertion aid (100) is placed against the cell stack (200) (302), wherein the tongue (102) of the insertion aid (100) is folded over (303) on the folding mechanism (103) for placing the tongue (102) against the cell stack (200) towards the cell stack (200), wherein the cell stack (200) and the insertion aid (100) are pushed together into a housing of the battery (304).

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