Device for cooling a battery, the device comprising the battery, the vehicle comprising the battery

Abstract

Device for cooling a battery (100), in particular a high-voltage battery, wherein the device comprises a housing (101) and a closure plate (103), wherein a separating plane (109) is arranged in the housing (101), wherein the separating plane (109) in the housing (101) separates an inlet (104), in which a cooling medium for cooling the battery (100) can move in an inlet flow direction (112), from an outlet (105), in which the cooling medium can move in an outlet flow (113), wherein a collector (110) for the cooling medium is arranged between the separating plane (109) and the closure plate (103), wherein the separating plane (109) has a wall (114) on a side of the separating plane (109) facing the closure plate (103), wherein the wall (114) is designed as an end face for contacting the collector (110), wherein the wall (114) The inlet (104) separates from the outlet (105),or wherein the collector (110) is integrated into or combined with the closure plate (103) or the wall (114). The device comprising a battery (100). The vehicle comprising the battery (100). Method for manufacturing the battery (100).

Description

[0001] The invention relates to a device for cooling a battery, a battery comprising the device, and a vehicle comprising the battery.

[0002] DE 10 2021 105 861 A1 discloses a cell stack for a battery.

[0003] DE 10 2022 117 353 A1 discloses a battery cell with an integrated temperature control chamber and US 2014 / 0 038 020 A1 discloses a power storage apparatus.

[0004] A device for cooling a battery, in particular a high-voltage battery of a vehicle according to claim 1, provides a reverse cooling system in the battery, in which a forward flow and a separate return flow are established in the battery.

[0005] The device comprises a housing and a closure plate, wherein a separating plane is arranged in the housing, the separating plane in the housing separating an inlet, in which a cooling medium can move in an inlet flow direction for cooling the battery, from an outlet, in which the cooling medium can move in an outlet flow, wherein a collector for the cooling medium is arranged between the separating plane and the closure plate, the separating plane having a wall on one side of the separating plane facing the closure plate, the wall being designed as an end face for contacting the collector, the wall separating the inlet from the outlet, or wherein the collector is integrated into or combined with the closure plate or the wall.

[0006] It may be provided that a seal for the cooling medium is arranged between the wall and the collector at the front face, in particular circumferentially around the front face, with the seal separating the inlet from the outlet.

[0007] A cell stack is arranged in the housing, extending in an insertion direction in which the cell stack can be inserted into the housing, wherein the cell stack comprises cells of the battery which are arranged next to each other in the cell stack in the insertion direction, wherein a part of a wall of the cells, which projects out of the wall of the cells at an angle, in particular transverse to the insertion direction, is formed as part of the separating plane.

[0008] A battery cell stack is arranged in the housing, or several battery cell stacks are arranged in the housing, wherein each cell stack has two separating planes with a respective wall, the walls arranged on the respective separating planes being designed as the end face for contacting the collector.

[0009] A battery may be provided, in particular a high-voltage battery, wherein the battery comprises the device.

[0010] A vehicle can be provided, whereby the vehicle includes the battery.

[0011] A method for manufacturing a battery, in particular a high-voltage battery, provides that a cell stack is inserted into a battery housing in an insertion direction, wherein a partition plane is arranged in the housing extending in the insertion direction and separating an inlet, in which a cooling medium can move in an inlet flow direction for cooling the battery, from an outlet, in which the cooling medium can move in an outlet flow, wherein a collector for the cooling medium is arranged between the partition plane and the end plate, wherein the partition plane has a wall on one side of the partition plane facing the end plate, wherein the wall is designed as an end face for contacting the collector, or wherein the collector is integrated into or combined with the end plate or the wall, and wherein the wall separates the inlet from the outlet.and whereby the housing is closed with the locking plate.

[0012] It may be provided that a seal, in particular one circumferential around the front face, is arranged between the end face and the collector, with the seal separating the inlet from the outlet.

[0013] In the housing, a cell stack is inserted in an insertion direction, wherein the cell stack extends in the insertion direction, the cell stack comprises cells of the battery which are arranged next to each other in the cell stack in the insertion direction, wherein a part of a wall of the cells, which projects out of the wall of the cells at an angle, in particular transverse to the insertion direction, is formed as part of the separating plane.

[0014] A battery cell stack is arranged in the housing, or several battery cell stacks are arranged in the housing, wherein two separating planes with a respective wall are arranged for each cell stack, the walls arranged on the respective separating planes being designed as the end face for contacting the collector.

[0015] Further advantageous embodiments can be seen in the drawing and the following description. The drawing shows: Fig. 1 a schematic representation of a cross-section through a battery, Fig. 2 a schematic representation of a side view of the battery, Fig. 3. A flowchart showing the steps of a process for manufacturing the battery.

[0016] In Fig. Figure 1 shows a schematic cross-section of a battery 100 with direct cooling. In this example, battery 100 is a high-voltage battery from a vehicle.

[0017] The battery 100 comprises a housing 101. The housing 101 is, for example, extruded. The housing 101 is, for example, a profile housing.

[0018] The housing 101 has a first locking plate 102 on its first end face. The housing 101 has a second locking plate 103 on its second end face.

[0019] In the example, an inlet 104 for a cooling medium is arranged in the housing 101. In the example, an outlet 105 for the cooling medium is arranged in the second closing plate 103.

[0020] The housing 101 extends from the second closing plate 103 to the first closing plate 102 in an insertion direction 106.

[0021] In the housing 101, two cell stacks 107 are arranged in the example. Each cell stack 107 comprises six cells 108, arranged side by side in the insertion direction 106. The two cell stacks 107 are arranged side by side perpendicular to the insertion direction 106.

[0022] In the housing 101, four separating planes 109 are arranged in the example. The separating planes 109 extend in the insertion direction 106 in the example. The separating planes 109 are arranged next to each other perpendicular to the insertion direction 106 in the example.

[0023] A collector 110 is arranged between the separating planes 109 and the second closing plate 103.

[0024] The arrangement of the collector 110 and the four separating planes 109 in the housing 101 is such that a cooling medium flowing into the housing 101 through the inlet 104 flows in an inlet direction 112 between the two outer separating planes 109 closest to the housing 101 and between the housing 101 and between the two inner separating planes 109. Furthermore, the arrangement of the collector 110 and the four separating planes 109 in the housing 101 is such that the cooling medium flows in an outlet flow direction 113 towards the outlet 105 between each of the outer separating planes 109 and the adjacent inner separating plane 109.

[0025] In Fig. Figure 2 shows a schematic representation of a side view of battery 100.

[0026] The separating planes 109 have walls 114 on their side facing the second closure plate 103. The walls 114 contact the separating planes 109 all around.

[0027] More than four separating planes 109 can be provided. There can be only one cell stack 107 or more than two cell stacks 107. More than one inlet 104 can be provided. More than one outlet 105 can be provided. Two separating planes 109 are provided for each cell stack 107. In the example, the cells 108 of the respective cell stack 107 are configured with the two separating planes 109 for the respective cell stack 107.

[0028] A device for cooling the battery comprises the housing 101, the first sealing plate 102, the second sealing plate 103, the separating planes 109, the collector 110 and the walls 114.

[0029] An exemplary geometry of the collector 110 and the walls 114 is described below.

[0030] The separating planes 109 are located on the two opposite end faces of the housing 101 or are sealed in these areas towards the housing 101.

[0031] The walls 114 of the separating plane 109 form an end face for contacting the collector 110 with a circumferential seal 111 for the cooling medium. The collector 110 is contacted at this end face in the insertion direction 106. The cell stacks 107 are pressed and sealed in the insertion direction 106. The collector 110 is pressed against the cell stacks 107 and fixed in the insertion direction 106.

[0032] Alternatively, the collector can be integrated into the closure plate 103 or into the wall 114, or combined with the closure plate 103 or the wall 114.

[0033] The collector 110 has an inlet for cooling medium flowing in the outflow direction from the battery 100 and an outlet corresponding to the outlet 105 for cooling medium flowing in the outflow direction from the battery 100. In the case of multiple cell stacks 107, the collector 110 connects the end faces of the cell stacks 107 within the housing 101.

[0034] A volume between the first closure plate 102 and the cell stacks 107 serves as a reversal volume for the cooling medium.

[0035] A volume between the second closure plate 103 and the cell stacks 107 serves as a flow distributor for the cooling medium.

[0036] This simple component arrangement completely separates the inlet flow of the cooling medium in the inlet flow direction and the outlet flow of the cooling medium in the outlet flow direction within battery 100, resulting in a forward flow and a return flow within battery 100.

[0037] A flowchart of a process for manufacturing battery 100 is in Fig. 3 shown.

[0038] The procedure includes a step 301.

[0039] In step 301, at least one cell stack 107 is inserted into the housing 101 in the insertion direction 106. The cell stack 107 has at least two partitions 109 extending in the insertion direction 106. For example, a portion of a cell wall 108 of a cell stack 107 is formed as a portion of the partition plane 109. In this example, the portion of the cell wall 108 projects out of the cell wall 108 at an angle, in particular transversely to the insertion direction 106. This means that the wall of each cell 108 of the cell stack 107 is formed with two partitions 109. The at least two partitions 109 have walls 114 on one side of the cell stack 107 facing the second closure plate 103. The walls 114 contact the partition planes 109 all around.

[0040] The cell stacks 107 are pressed and sealed with the first closure plate 102 in the insertion direction 106.

[0041] The procedure includes step 302.

[0042] In step 302, the collector 110 is pressed against the cell stacks 107 in the insertion direction 106 and fixed.

[0043] The procedure includes step 303.

[0044] In step 303, the housing 101 is pressed and sealed with the second sealing plate 103.

Claims

[1] Device for cooling a battery (100), in particular a high-voltage battery, wherein the device comprises a housing (101) and a closure plate (103), wherein a separating plane (109) is arranged in the housing (101), wherein the separating plane (109) in the housing (101) separates an inlet (104), in which a cooling medium for cooling the battery (100) can move in an inlet flow direction (112), from an outlet (105), in which the cooling medium can move in an outlet flow (113), wherein a collector (110) for the cooling medium is arranged between the separating plane (109) and the closure plate (103), wherein the separating plane (109) has a wall (114) on a side of the separating plane (109) facing the closure plate (103), wherein the wall (114) is designed as an end face for contacting the collector (110), wherein the wall (114) separates the inlet (104) from the outlet (105),or wherein the collector (110) is integrated into the closure plate (103) or into the wall (114) or is combined with the closure plate (103) or the wall (114), , characterized bythat a cell stack (107) is arranged in the housing (101), the cell stack (107) extending in an insertion direction (106) in which the cell stack (107) can be inserted into the housing (101), wherein the cell stack (107) comprises cells (108) of the battery (100) which are arranged side by side in the cell stack (107) in the insertion direction (106), wherein a part of a wall of the cells (108), which projects out of the wall of the cells (108) at an angle, in particular transverse to the insertion direction (106), is formed as part of the separating plane (109), and that a cell stack (107) of the battery (100) is arranged in the housing (101), or that several cell stacks (107) of the battery (100) are arranged in the housing (101), wherein each cell stack (107) has two separating planes (109) with a respective wall (114) are arranged, wherein the walls (114) arranged on the respective separating planes (109) are designed as the end face for contacting the collector (110). [2] Device according to claim 1, characterized by, that a seal (111) for the cooling medium is arranged between the wall (114) and the collector (110) at the end face, in particular circumferentially around the end face, wherein the seal (111) separates the inlet (104) from the outlet (105). [3] Battery (100), in particular high-voltage battery, characterized by , that the battery (100) comprises the device according to one of claims 1 or 2. [4] vehicle, characterized by , that the vehicle comprises the battery (100) according to claim 3. [5] Method for manufacturing a battery (100), in particular a high-voltage battery, characterized by, a cell stack (107) is inserted into a housing (101) of the battery (100) in an insertion direction (106) (301), wherein a partition (109) is arranged in the housing (101) (302), which extends in the insertion direction (106) and separates an inlet (104), in which a cooling medium for cooling the battery (100) can move in an inlet flow direction (112), from an outlet (105), in which the cooling medium can move in an outlet flow (113), wherein a collector (110) for the cooling medium is arranged between the partition (109) and the closure plate (103) (302), wherein the partition (109) has a wall (114) on one side of the partition (109) facing the closure plate (103), the wall (114) serving as an end face for contacting the collector (110) is formed or wherein the collector (110) is integrated into the closure plate (103) or into the wall (114) or is combined with the closure plate (103) or the wall (114),wherein the wall (114) separates the inlet (104) from the outlet (105), and wherein the housing (101) is closed with the closing plate (103) (303), , characterized bythat a cell stack (107) is inserted into the housing (101) in an insertion direction (106), the cell stack (107) extending in the insertion direction (106), the cell stack (107) comprising cells (108) of the battery (100) arranged side by side in the cell stack (107) in the insertion direction (106), a portion of a wall of the cells (108) projecting from the wall of the cells (108) at an angle, in particular transverse to the insertion direction (106), forming part of the separating plane (109), and that a cell stack (107) of the battery (100) is arranged in the housing (101), or that several cell stacks (107) of the battery (100) are arranged in the housing (101), each cell stack (107) having two separating planes (109) with a respective wall (114). are formed, wherein the walls (114) arranged at the respective separation planes (109) are designed as the end face for contacting the collector (110). [6] Method according to claim 5, characterized by, that a seal (111) is arranged between the front face and the collector (110), in particular circumferentially around the front face, wherein the seal (111) separates the inlet (104) from the outlet (105).

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