High-voltage battery, process for manufacturing the high-voltage battery, vehicle comprising the high-voltage battery

Abstract

A high-voltage battery (100) and a method for manufacturing a high-voltage battery (100) provide that a cell stack frame (101) is provided, wherein a cell stack (103) is arranged in the cell stack frame (102), the cell stack (103) comprising at least one cell (104) and at least one cooling plate (105), wherein a filler material or filling cushion (106), in particular thermally conductive and / or deformable, is arranged between the at least one cell (104) and the at least one cooling plate (105), wherein an assembly aid (108) is arranged in an assembly gap (107) between the cell stack frame (101) and the cell stack (103), wherein the assembly aid (108) comprises a cushion, in particular tubular, wherein the assembly aid (108) arranged in the assembly gap (107) is filled with a medium, in particular gas, liquid or foam, wherein the cell stack (103) and the assembly aid (108) are potted with a potting compound in the cell stack frame (101),and the assembly aid (108) remains in the manufactured high-voltage battery (100). A vehicle comprising the high-voltage battery (100).

Description

[0001] The invention relates to a high-voltage battery and a method for manufacturing the high-voltage battery and a vehicle comprising the high-voltage battery.

[0002] US 2003 / 0 013 015 A1 discloses a cell stack for a battery with a compression pad which is filled with gas to maintain compression in the cell stack.

[0003] KR 10 2021 0 016 826 A discloses a battery module comprising a cell assembly with battery cells, each having an electrode connection. A module housing has a side wall with an interior space for receiving the cell assembly. A cooling element is positioned on one side of the cell assembly and supports a side wall of the module housing in an outward direction.

[0004] US 2023 / 0246275A1 discloses a battery pack comprising a multi-cell battery assembly, a busbar assembly on one side of the battery assembly, a cooling unit between the multi-cells, and a cell receiving unit. The cell receiving unit divides the battery cells together with the cooling unit.

[0005] DE 10 2020 123 267 A1 relates to a cooling arrangement for battery cells. One battery cell is located against a first side of a cooling device. Another battery cell is located against a second side of the cooling device. The cooling device comprises a cooling element through which a cooling fluid flows, and which is partially covered by a heat-conducting element providing the first side.

[0006] DE 10 2014 114 019 A1 discloses a battery system for a hybrid drive. Battery cells are grouped into a cell block within a housing. A container with a variable internal volume is arranged between the cell block and a housing wall, allowing the cell block to be clamped against the housing. The container is filled with a curable medium.

[0007] DE 10 2025 114 788 A1 discloses an electrical energy storage device with a housing in which a plurality of electrically interconnected individual cells and a pressure element for pressurizing the individual cells are arranged. The pressure element is capable of being pressurized with a fluid and is elastically deformable. It extends over the entire length of a predetermined housing wall between this wall and the individual cells arranged at the edge.

[0008] A method for manufacturing a high-voltage battery provides that a cell stack frame is provided, wherein a cell stack is arranged in the cell stack frame, the cell stack comprising at least one cell and at least one cooling plate, wherein a filler material or pad, in particular thermally conductive and / or deformable, is arranged between the at least one cell and the at least one cooling plate, wherein an assembly aid is arranged in an assembly gap between the cell stack frame and the cell stack, the assembly aid comprising a pad, in particular tubular, wherein the assembly aid arranged in the assembly gap is filled with a medium, in particular gas, liquid, or foam, wherein the cell stack and the assembly aid are potted with a potting compound in the cell stack frame, and the assembly aid remains in the manufactured high-voltage battery. This ensures that, after assembly of the cells and the cooling plates with the filler material or pad, the cell stack and the pad are sealed within the cell stack frame.Filling pads are inserted, but before potting, an assembly aid is used as a positioning aid in a permanent assembly gap. This assembly aid remains in the assembly and is potted along with it. During the filling process, the cells and cooling plates are evenly compressed with the filler or filling pad.

[0009] The method may provide that the assembly aid has a filling nozzle, wherein the assembly aid is filled with the medium via the filling nozzle.

[0010] The process can be designed so that the filling nozzle is shaped to prevent the medium from escaping. This prevents any further leakage after the filling process. No external device is needed to maintain the seal during the curing process of the potting compound.

[0011] The method can provide for alternating rows of cells and cooling plates in the cell stack, with the filler or padding placed between the rows and cooling plates without compression. This reduces the risk of damage to the components of the cell stack or to the filler or padding.

[0012] A high-voltage battery comprises a cell stack frame, wherein a cell stack is arranged in the cell stack frame, the cell stack comprising at least one cell and at least one cooling plate, wherein a filler or filling pad, in particular thermally conductive and / or deformable, is arranged between the at least one cell and the at least one cooling plate, wherein an assembly aid is arranged in an assembly gap between the cell stack frame and the cell stack, wherein the assembly aid comprises a cushion, in particular tubular, wherein the assembly aid arranged in the assembly gap is filled with a medium, in particular gas, liquid or foam, wherein the cell stack and the assembly aid are potted with a potting compound in the cell stack frame, and the assembly aid is arranged to remain in the manufactured high-voltage battery.

[0013] The high-voltage battery may be designed so that the mounting aid has a filling port, allowing the mounting aid to be filled with the medium via the filling port.

[0014] The high-voltage battery may be designed so that the filling port is shaped to prevent the medium from escaping from the filling port.

[0015] A vehicle, wherein the vehicle includes the high-voltage battery.

[0016] Further advantageous embodiments can be found in the following description and the drawing. The drawing shows: Fig. 1 a schematic representation of a high-voltage battery, Fig. 2. A flowchart showing the steps of a process for manufacturing the high-voltage battery.

[0017] In Fig. Figure 1 shows a schematic representation of a high-voltage battery 100.

[0018] The high-voltage battery 100 comprises a cell stack frame 102.

[0019] A cell stack 103 is arranged in cell stack frame 102.

[0020] The cell stack 103 comprises cells 104 and cooling plates 105. In Fig. Figure 1 shows a partial view of the arrangement of cells 104 and cooling plates 105. In this example, the cells 104 are arranged in several rows. The cells 104 are cylindrical cells. The rows and cooling plates 105 are arranged alternately. The rows are staggered relative to each other, so that the cylindrical cells of one row are located in the gaps between the cylindrical cells of another row.

[0021] A filler or filling pad 106 is arranged between at least one cell 104 and at least one cooling plate 105. In the example, a filler or filling pad 106 is arranged in a contact area between each cell 104 and the respective cooling plate 105. Alternatively, a filler or filling pad 106 can be arranged in each contact area.

[0022] The filler or filling pad 106 is thermally conductive in this example. The filler or filling pad 106 is deformable in this example.

[0023] In Fig. Figure 1 shows a mounting gap 107 between the cell stack frame 102 and the cell stack 103. A mounting aid 108 is arranged in the mounting gap 107. The mounting aid 108 comprises a cushion. In this example, the cushion is tubular.

[0024] The assembly aid 108 can be filled with a medium, in particular gas, liquid or foam.

[0025] The cell stack 103 and the assembly aid 108 are potted with a potting compound in the cell stack frame 102. The assembly aid 108 is positioned to remain in the manufactured high-voltage battery 100. In this example, the potting compound is located in the assembly gap 107.

[0026] The assembly aid 108, for example, has a filling port. The assembly aid 108 can be filled with the medium via this filling port. The filling port is designed to prevent the medium from escaping.

[0027] The high-voltage battery 100 is, for example, arranged in a vehicle, particularly as a traction battery.

[0028] In Fig. Figure 2 shows a flowchart with steps of a process for manufacturing the high-voltage battery 100.

[0029] The procedure includes step 201.

[0030] In step 201, the cell stack frame 102 is provided.

[0031] The procedure includes step 202.

[0032] In step 202, cell stack 103 is provided.

[0033] The cell stack 103 comprises cells 104 and at least one cooling plate 105. The cell stack 103 includes the filler material or filling pad 106, which is in particular thermally conductive and / or deformable.

[0034] The filler material or filling pad 106, which is in particular thermally conductive and / or deformable, is arranged between at least one cell 104 and at least one cooling plate 105.

[0035] For example, in cell stack 103, rows of cells 104 and cooling plates 105 are arranged alternately, with the filler or filling pad 106 being arranged between the rows and cooling plates without compression.

[0036] The procedure includes step 203.

[0037] In step 203, the cell stack 103 is arranged in the cell stack frame 102.

[0038] The procedure includes step 204.

[0039] In step 204, the assembly aid is positioned in the assembly gap 107 between the cell stack frame 102 and the cell stack 103. In this example, the assembly aid 108 comprises the tubular cushion.

[0040] The procedure includes step 205.

[0041] In step 205, the assembly aid 108 arranged in the assembly gap 107 is filled with the medium, in particular gas, liquid or foam.

[0042] For the assembly aid 108, which has the filling nozzle, the assembly aid 108 is filled with the medium via the filling nozzle.

[0043] The filling nozzle prevents the medium from escaping from the filling nozzle after filling.

[0044] The procedure includes step 206.

[0045] In step 206, the cell stack 103 and the assembly aid 108 are potted with the potting compound in the cell stack frame 102.

[0046] The assembly aid 108 remains in the manufactured high-voltage battery 100.

Claims

[1] A method for manufacturing a high-voltage battery (100), wherein a cell stack frame (102) is provided (201), wherein a cell stack (103) is arranged in the cell stack frame (102) (203), wherein the cell stack (103) comprises at least one cell (104) and at least one cooling plate (105), wherein a filler or filling pad (106), in particular thermally conductive and / or deformable, is arranged between the at least one cell (104) and the at least one cooling plate (105) (202), wherein an assembly aid (108) is arranged in an assembly gap (107) between the cell stack frame (102) and the cell stack (103) (204), wherein the assembly aid (108) comprises a cushion, in particular tubular, wherein the assembly aid (108) arranged in the assembly gap (107) is filled with a medium, in particular gas, liquid or foam. (205) wherein the cell stack (103) and the assembly aid (108) are potted with a potting compound in the cell stack frame (102) (206),and the assembly aid (108) remains in the manufactured high-voltage battery (100). [2] The method according to claim 1, characterized by , that the assembly aid (108) has a filling nozzle, wherein the assembly aid (108) is filled with the medium via the filling nozzle (205). [3] The method according to claim 2, characterized by , that the filling nozzle is designed to prevent the medium from escaping from the filling nozzle. [4] The method according to any of the preceding claims, characterized by , that in the cell stack (103) rows of cells (104) and cooling plates (105) are arranged alternately, wherein the filler or filling pad (106) is arranged without compression between the rows and cooling plates (202). [5] High-voltage battery (100) comprising a cell stack frame (102), wherein a cell stack (103) is arranged in the cell stack frame (102), the cell stack (103) comprising at least one cell (104) and at least one cooling plate (105), wherein a filler or filling pad (106), in particular thermally conductive and / or deformable, is arranged between the at least one cell (104) and the at least one cooling plate (105), wherein an assembly aid (108) is arranged in an assembly gap (107) between the cell stack frame (102) and the cell stack (103), wherein the assembly aid (108) comprises a cushion, in particular tubular, wherein the assembly aid (108) arranged in the assembly gap (107) is filled with a medium, in particular gas, liquid or foam, wherein the cell stack (103) and the assembly aid (108) are connected by a potting compound is poured into the cell stack frame (102),and the assembly aid (108) is arranged to remain in the manufactured high-voltage battery (100). [6] High-voltage battery (100) according to claim 5, characterized by , that the assembly aid (108) has a filling nozzle, wherein the assembly aid (108) can be filled with the medium via the filling nozzle. [7] High-voltage battery (100) according to claim 6, characterized by , that the filling nozzle is designed to prevent the medium from escaping from the filling nozzle. [8] vehicle, characterized by , that the vehicle comprises the high-voltage battery (100) according to one of claims 5 to 7.

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