Battery, seal for the battery, method for manufacturing the battery

Abstract

Battery (100), characterized in that the battery (100) comprises a housing (101), wherein an opening (103) to the environment (104) of the battery (100) is arranged in the housing (101), wherein a battery cell (102) is arranged in the housing (101), wherein the battery cell (102) has a vent (105), wherein a seal (106) is arranged between the vent (105) and the opening (103), wherein the seal (106) has a first sealing lip (107) which is pressed by a first element (110) against an inner side (112) of the housing (101), wherein the seal (106) has a second sealing lip (108) which is pressed by a second element (111) against a wall (113) of the battery cell (102), wherein the first element (110) extends through the opening (103), wherein the first element (110) is latched onto the outside of the housing (101), wherein the second element (111) is clamped between the first element (110) or the housing (101) and the battery cell (102).

Description

[0001] The invention relates to a battery, a seal and a method for producing the battery.

[0002] DE 10 2020 129 564 A1 discloses a battery.

[0003] DE 10 2021 129 317 A1 relates to a battery device for an at least partially electrically powered motor vehicle and comprises at least one housing with at least one housing space and a plurality of battery cells accommodated in the housing space. The battery cells each have a cell housing with at least one cell venting opening.

[0004] The battery according to claim 1 provides that the battery comprises a housing, wherein an opening to the environment of the battery is arranged in the housing, wherein a battery cell is arranged in the housing, wherein the battery cell has a vent, wherein a seal is arranged between the vent and the opening, wherein the seal has a first sealing lip which is pressed against an inner side of the housing by a first element, wherein the seal has a second sealing lip which is pressed against a wall of the battery cell by a second element, wherein the first element extends through the opening, wherein the first element is snapped into place on the outside of the housing, wherein the second element is clamped between the first element or the housing and the battery cell. Thus, the first sealing lip which bears against the housing and the second sealing lip which bears against the battery cell are clamped.

[0005] The battery can in particular be a high-voltage battery.

[0006] In one embodiment, the seal comprises an elastomer arranged between the first sealing lip and the second sealing lip, which connects the first sealing lip and the second sealing lip to each other.

[0007] In one embodiment, the first sealing lip surrounds the opening radially.

[0008] In one embodiment, the second sealing lip radially surrounds the vent.

[0009] It may be provided that the seal comprises the first element and / or the second element.

[0010] A seal for the battery has a first sealing lip, a second sealing lip, a first element and a second element, wherein the first sealing lip can be pressed by the first element against an inner side of a housing of the battery, wherein the second sealing lip can be pressed by the second element against a wall of a battery cell of the battery, wherein the first element is designed to extend through an opening in a housing of the battery and to snap into place on the outside of the housing, wherein the second element is designed to be clamped between the first element or the housing and the battery cell.

[0011] A method for producing the battery provides that the method comprises providing a housing, wherein an opening to the environment of the battery is arranged in the housing, wherein a seal is arranged in the housing, wherein the seal has a first sealing lip and a second sealing lip, wherein a first element, which is designed to press the first sealing lip against an inner side of the housing, is moved through the opening and latched onto the outside of the housing, wherein a battery cell is moved into the housing, wherein a second element, which is designed to press the second sealing lip against a wall of the battery cell, is clamped between the first element or the housing and the battery cell.

[0012] The method preferably provides that the second element is moved from outside the housing in the direction of the battery cell to clamp the second element between the first element or the housing and the battery cell.

[0013] The method preferably provides that the first sealing lip is arranged radially surrounding the opening.

[0014] The method preferably provides that the second sealing lip is arranged radially surrounding the vent.

[0015] Further advantageous embodiments can be found in the following description and the drawing. The drawing shows: Fig. 1 a schematic representation of a battery before a processing step, Fig. 2 a schematic representation of the battery after the processing step, Fig. 3 a method for producing the battery, Fig. 4 a schematic representation of a first embodiment of the seal before the processing step, Fig. 5 a schematic representation of the first embodiment of the seal after the processing step, Fig. 6 a schematic representation of a second embodiment of the seal before the processing step, Fig. 7 a schematic representation of the second embodiment of the seal after the processing step, Fig. 8 a schematic representation of a third embodiment of the seal before the processing step, Fig. 9 a schematic representation of the third embodiment of the seal after the processing step, Fig. 10 is a schematic representation of a fourth embodiment of the seal before the processing step, Fig. 11 a schematic representation of the fourth embodiment of the seal after the processing step.

[0016] In Fig. 1 shows a schematic representation of a battery 100 before a processing step.

[0017] In the example, the battery 100 is a high-voltage battery of a vehicle.

[0018] The battery 100 comprises a housing 101. One or more battery cells 102 are arranged in the housing 101. At least one opening 103 to the surroundings 104 of the battery 100 is arranged in the housing 101.

[0019] The battery cell 102 has a vent 105. The vent 105 is designed to allow hot gases to escape from the battery cell 102 in the event of a fault that requires it. In the example, the vent is aligned with the opening 103. In the event of a fault, the hot gases escape through the opening 103 into the environment 104.

[0020] A seal 106 is arranged between the vent 105 and the opening 103.

[0021] The seal 106 has a first sealing lip 107 and a second sealing lip 108. The seal 106 includes an elastomer 109 disposed between the first sealing lip 107 and the second sealing lip 108. The elastomer 109 interconnects the first sealing lip 107 and the second sealing lip 108. The elastomer 109 includes a channel extending between the sealing lips. The elastomer 109 and the sealing lips are impermeable to the hot gas. The elastomer 109 and the sealing lips are at least temporarily resistant to the expected temperatures of the hot gas.

[0022] In the example, the seal 106 comprises a first element 110 and a second element 111.

[0023] The first element 110 is configured to extend through the opening 103 in the housing 101 of the battery 100 and to engage the outside of the housing 101. In the example, the first element 110 has a locking lug configured to engage an outer side of the housing 101. The first element 110 extends through the opening 103. The first element 110 is engaged on the outside of the housing 101.

[0024] The second element 111 is designed to be clamped between the first element 110 and the battery cell 102.

[0025] The first sealing lip 107 can be pressed by the first element 110 against an inner side 112 of the housing 101 of the battery. The first sealing lip 107 is pressed by the first element 110 against the inner side 112 of the housing 101.

[0026] The second sealing lip 108 can be pressed by the second element 111 against a wall 113 of a battery cell 102 of the battery 100.

[0027] The first sealing lip 107 surrounds the opening 103 radially in the example.

[0028] A mounting gap 114 is provided between the battery cell 102 and the housing 101. The seal 106 is arranged at least partially in the mounting gap 114.

[0029] In the processing step, the seal 106 is arranged to seal the mounting gap 114 relative to the opening 103 and the vent 105.

[0030] In Fig. 2 shows a schematic representation of the battery 100 after the processing step.

[0031] The second sealing lip 108 is pressed by the second element 111 against a wall 113 of the battery cell 102.

[0032] The second element 111 is clamped between the first element 110 and the battery cell 102.

[0033] The second sealing lip 108 surrounds the vent 105 radially in the example.

[0034] The vent 105 and the opening 103 are connected to each other by the seal 106 in such a way that the hot gas can flow through the seal 106, in particular through a channel formed by the elastomer 109 from the vent 105 to the opening 103.

[0035] The seal 106 seals the mounting gap 114 against the channel.

[0036] In Fig. 3 illustrates steps in a method for manufacturing battery 100. The method is described for opening 103, vent 105, and seal 106. A corresponding procedure is followed for multiple openings and vents. For example, multiple seals configured like seal 106, or a sealing device with multiple arrangements of seals 106, are arranged as described for seal 106. The method is described for battery cell 102. For multiple battery cells to be arranged in battery 100, the procedure is followed as described for battery cell 102.

[0037] The method comprises a step 201.

[0038] In step 201, the housing 101 is provided. The opening 103 to the environment 104 of the battery 100 is arranged in the housing 101. The method includes a step 202.

[0039] In step 202, the seal 106 is arranged in the housing 101. The seal 106 is arranged such that the seal 106 and the opening 103 are aligned. The first sealing lip 107 is arranged, for example, such that the first sealing lip 107 surrounds the opening 103, in particular radially.

[0040] The method comprises a step 203.

[0041] In step 203, the first element 110 is moved through the opening 103 and snapped into place on the outside of the housing 101.

[0042] The method includes a step 204.

[0043] In step 204, the battery cell 102 is moved into the housing 101.

[0044] The battery cell 102 is moved into the housing 101 such that the vent 105, the opening 103, and the seal 106 are aligned. The second sealing lip 108 is arranged, for example, such that the second sealing lip 108 surrounds the vent 105, in particular radially.

[0045] The method includes a step 205.

[0046] In step 205, the second element 111 is clamped between the first element 110 and the battery cell 102.

[0047] The second element 111 is moved, for example, from outside the housing 101 in the direction of the battery cell 102 in order to clamp the second element 111 between the first element 110 and the battery cell 102.

[0048] The elastomer 109 is stretched by the tensioning.

[0049] In Fig. 4 is a schematic representation of a first embodiment of the seal 106 before the processing step.

[0050] In Fig. 5 is a schematic representation of the first embodiment of the seal 106 after the processing step.

[0051] According to the first embodiment, the elastomer 109 is connected in the region of the first element 110 and the second element 111.

[0052] By moving the second element 111 toward the wall 113, the elements move away from each other. This axially retensions the elastomer 109.

[0053] In Fig. 6 is a schematic representation of a second embodiment of the seal 106 before the processing step.

[0054] In Fig. Figure 7 shows a schematic representation of the second embodiment of the seal 106 after the processing step.

[0055] According to the second embodiment, the first element 110 and the second element 111 each have an angle with a first leg and a second leg. The first leg of the two elements extends substantially parallel to the inner side 112, with the end of the respective first leg facing away from the opening 103 being connected to the elastomer 109. The elastomer 109 is arranged flat between the first legs before the processing step.

[0056] The second leg of the second element 111 is arranged at a distance from a wall of the opening 103 prior to the machining step. The second element 111 is designed to press the second leg of the angle of the second element 111 against the wall of the opening 103 and against the second leg of the first element 110 as the second element 111 moves toward the wall 113. As a result, the second legs move toward each other and the first legs move away from each other. This axially retensions the elastomer 109.

[0057] In Fig. Figure 8 shows a schematic representation of a third embodiment of the seal 106 before the processing step.

[0058] In Fig. Figure 9 shows a schematic representation of the third embodiment of the seal 106 after the machining step.

[0059] According to the third embodiment, the first element 110 and the second element 111 each have an angle with a first leg and a second leg. The first legs extend substantially parallel to the inner side 112, with the end of the respective first leg facing away from the opening 103 being connected to the elastomer 109. The elastomer 109 is arranged flat between the first legs before the processing step.

[0060] The second element 111 is configured to move the second leg of the angle of the second element 111 toward the wall 113 upon movement of the second element 111. This moves the first leg of the angle of the second element 111 away from the first leg of the angle of the first element 110. This axially retensions the elastomer 109.

[0061] In Fig. 10 is a schematic representation of a fourth embodiment of the seal 106 before the machining step.

[0062] In Fig. 11 is a schematic representation of the fourth embodiment of the seal 106 after the processing step.

[0063] According to the fourth embodiment, the elastomer 109 is connected to the first element 110 and the second element 111 at a respective connection point in the region of the opening 103 and is laid flat outwards with respect to the opening 103 before the processing step.

[0064] By moving the second element 111 toward the wall 113, the connection points move apart. This axially retensions the first elastomer 109. The second element 111 has a locking lug that engages the inner side 112 after moving toward the wall 113.

[0065] If the housing 101 of a battery with direct cooling is filled with coolant, the internal pressure of the coolant is applied to the sealing lips and compresses them even further.

Claims

[1] Battery (100), characterized by that the battery (100) comprises a housing (101), wherein an opening (103) to the environment (104) of the battery (100) is arranged in the housing (101), wherein a battery cell (102) is arranged in the housing (101), wherein the battery cell (102) has a vent (105), wherein a seal (106) is arranged between the vent (105) and the opening (103), wherein the seal (106) has a first sealing lip (107) which is pressed by a first element (110) against an inner side (112) of the housing (101), wherein the seal (106) has a second sealing lip (108) which is pressed by a second element (111) against a wall (113) of the battery cell (102), wherein the first element (110) extends through the opening (103), wherein the first element (110) is engaged on the outside of the housing (101), wherein the second element (111) is clamped between the first element (110) or the housing (101) and the battery cell (102). [2] Battery (100) according to claim 1, characterized by that the seal (106) comprises an elastomer (109) which is arranged between the first sealing lip (107) and the second sealing lip (108), which connects the first sealing lip (107) and the second sealing lip (108) to one another. [3] Battery (100) according to one of the preceding claims, characterized by that the first sealing lip (107) radially surrounds the opening (103). [4] Battery (100) according to one of the preceding claims, characterized by that the second sealing lip (108) radially surrounds the vent (105). [5] Battery (100) according to one of the preceding claims, characterized by that the seal (106) comprises the first element (110) and / or the second element (111). [6] Seal (106) for a battery (100) according to one of claims 1 to 5, characterized byin that the seal (106) has a first sealing lip (107), a second sealing lip (108), a first element (110) and a second element (111), wherein the first sealing lip (107) can be pressed by the first element (110) against an inner side (112) of a housing (101) of the battery, wherein the second sealing lip (108) can be pressed by the second element (111) against a wall (113) of a battery cell (102) of the battery (100), wherein the first element (107) is designed to extend through an opening (103) in a housing (101) of the battery (100) and to latch onto the outside of the housing (101), wherein the second element (108) is designed to be clamped between the first element (107) and the battery cell (102). [7] Method for producing a battery (100), characterized bythat the method comprises providing a housing (101) (201), wherein an opening (103) to the environment (104) of the battery (100) is arranged in the housing (101), wherein a seal (106) is arranged in the housing (101) (202), wherein the seal (106) has a first sealing lip (107) and a second sealing lip (108), wherein a first element (110), which is designed to press the first sealing lip (107) against an inner side (112) of the housing (101), is moved through the opening (103) and is latched onto the outside of the housing (101) (203), wherein a battery cell (102) is moved into the housing (101) (204), wherein a second element (111), which is designed to press the second sealing lip (108) against a wall (113) of the battery cell (102), is arranged between the first element (110) and the battery cell (102) is clamped (205). [8] Method according to claim 7, characterized bythat the second element (111) for clamping the second element (111) between the first element (110) and the battery cell (102) is moved (205) from outside the housing (101) in the direction of the battery cell (102). [9] Method according to one of claims 7 or 8, characterized by that the first sealing lip (107) is arranged radially surrounding the opening (103) (202). [10] Method according to one of claims 7 or 8, characterized by that the second sealing lip (108) is arranged radially surrounding the vent (105) (205).

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