Battery device

Abstract

A battery device comprising the following: a housing that contains a recording chamber; a battery cell arrangement housed within the casing and containing a large number of battery cells; a cooling fluid provided in the recording chamber; and at least one cooling element positioned between the multitude of battery cells, where the at least one cooling element contains the following: a body area located between the multitude of battery cells; a first curved area that is bent on one side of the body area; and a second curved area that is curved on the other side of the body area.

Description

TECHNICAL AREA

[0001] The present disclosure relates to a battery device. BACKGROUND

[0002] Batteries are widely used not only in small electronic devices such as mobile phones and laptops, but also in medium to large-scale mechanical devices such as electric vehicles (EVs) and energy storage systems, and have the advantage of being rechargeable and reusable.

[0003] An electrode assembly comprising a cathode plate and an anode plate is housed in a casing selected for its intended use, such as a pouch type, a square type or a cylindrical type, and an electrolyte is supplied to produce a battery cell.

[0004] A large number of battery cells can be connected via busbars to form a battery device. Examples of such devices include battery modules and / or battery packs.

[0005] The battery device may require cooling. The battery device can be immersed in a cooling fluid, enabling immersion cooling or immersion cooling.

[0006] Meanwhile, heat propagation in a battery device can occur due to overheating problems in at least one battery cell.

[0007] Therefore, cooling and prevention of heat spread should be considered simultaneously during the manufacture and use of battery devices. SUMMARY

[0008] According to one aspect of the present disclosure, a battery device with improved cooling efficiency is provided.

[0009] According to one aspect of the present disclosure, a battery device is provided which is capable of minimizing or preventing heat propagation.

[0010] Furthermore, the present disclosure can be broadly applied to devices in green technology fields such as solar power generation and wind power generation.

[0011] Furthermore, the present disclosure can be applied to environmentally friendly devices such as environmentally friendly electric vehicles and hybrid vehicles, which aim to prevent climate change by reducing air pollution and greenhouse gas emissions.

[0012] A battery device according to an embodiment of the present disclosure may include: a housing containing a receiving space; a battery cell arrangement housed in the housing and containing a plurality of battery cells; a cooling fluid provided in the receiving space; and at least one cooling element arranged between the plurality of battery cells, and the at least one cooling element may include: a body region arranged between the plurality of battery cells; a first curved region curved on one side of the body region; and a second curved region curved on the other side of the body region.

[0013] In a preferred embodiment, the battery device may further include an insulating element arranged between the plurality of cooling elements.

[0014] In a preferred embodiment, the insulating element can be made of a different material than the body area.

[0015] In a preferred embodiment, in the plurality of cooling elements, each of the first curved areas can face each other, with the insulating element arranged between them, and each of the second curved areas can face each other, with the insulating element arranged between them.

[0016] In a preferred embodiment, the insulating element can be made of a material with a lower thermal conductivity than the body area or of a material containing mica.

[0017] In a preferred embodiment, the insulating element can be formed from a material containing mica.

[0018] In a preferred embodiment, the body area can be formed from a material containing metal.

[0019] In a preferred embodiment, the plurality of battery cells can be spaced apart from the housing, and the first curved area and the second curved area can be arranged in a separation space formed by separating the plurality of battery cells from the housing, and can face the housing in the separation space.

[0020] In a preferred embodiment, the first curved region and the second curved region can face each other in a cross-section in the thickness direction of the at least one cooling element.

[0021] In a preferred embodiment, the battery device may further include a support element arranged between each of the first curved areas and the housing.

[0022] In a preferred embodiment, the support element can be formed from a material containing at least one of polyurethane and silicone.

[0023] In a preferred embodiment, each of the first curved regions and the support element can have a height that is higher than the height of an end of the battery cells in a cross-section in the thickness direction of the plurality of battery cells.

[0024] In a preferred embodiment, the plurality of battery cells can be spaced apart from the first curved area and the second curved area.

[0025] In a preferred embodiment, the insulating element can be provided multiple times and a plurality of insulating elements can be formed from different materials.

[0026] In a preferred embodiment, the plurality of insulating elements may include: a first insulating element facing a body region of one cooling element of the plurality of cooling elements; and a second insulating element arranged between the first insulating element and a body region of another cooling element of the plurality of cooling elements, and the second insulating element may be made of a different material than the first insulating element.

[0027] In a preferred embodiment, the first insulating element can be formed from a material containing mica or silicone.

[0028] In a preferred embodiment, the second insulating element can be formed from a material containing mica or silicone.

[0029] In a preferred embodiment, the battery device may further include: a plurality of plate elements surrounding the plurality of battery cells and arranged between the plurality of battery cells and the housing in the receiving space, and which include at least one arrangement support projection, and the housing may include: at least one arrangement support groove formed on an inner surface facing the plurality of plate elements, and into which the at least one arrangement support projection is inserted.

[0030] In a preferred embodiment, the cooling fluid can contain an insulating oil and the battery cell arrangement and the at least one cooling element can be immersed in the cooling fluid.

[0031] In a preferred embodiment, a battery device may comprise: a housing containing insulating oil or cooling water in a receiving space; a battery cell arrangement comprising a plurality of battery cells immersed in the insulating oil or cooling water in the receiving space and spaced apart from the housing; a plurality of cooling elements arranged between the plurality of battery cells; and an insulating element arranged between the plurality of cooling elements and formed from a different material than the plurality of cooling elements, wherein each plurality of cooling elements may comprise a curved region arranged in a separating space formed by separating the plurality of battery cells from the housing in the receiving space.

[0032] In a preferred embodiment, the curved region may include: a first curved region facing one side of the battery cell; and a second curved region facing the other side of the battery cell.

[0033] According to one aspect of the present disclosure, a battery device can be provided which is capable of improving cooling efficiency.

[0034] According to one aspect of the present disclosure, a battery device can be provided which is capable of minimizing or preventing heat propagation.

[0035] Furthermore, the present disclosure can be broadly applied to devices in green technology fields such as solar power generation and wind power generation.

[0036] Furthermore, the present disclosure can be applied to environmentally friendly devices such as environmentally friendly electric vehicles and hybrid vehicles, which aim to prevent climate change by reducing air pollution and greenhouse gas emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Certain aspects, features and advantages of the present disclosure are illustrated by the following detailed description with reference to the accompanying drawings. Fig. Figure 1 is a schematic perspective view of a battery device according to an embodiment of the present disclosure. Fig. 2 is a schematic cross-sectional view along line II' of Fig. 1. Fig. Figure 3 is a schematic cross-sectional view of a cooling element according to an embodiment of the present disclosure. Fig. Figure 4 is a schematic cross-sectional view of a plurality of cooling elements according to an embodiment of the present disclosure. Fig. Figure 5 is a schematic cross-sectional view of a plurality of cooling elements and an insulating element according to an embodiment of the present disclosure. Fig. Figure 6 is a schematic cross-sectional view of a plurality of cooling elements, an insulating element and a support element according to an embodiment of the present disclosure. Fig. Figure 7 is a schematic cross-sectional view of a section of a battery device according to an embodiment of the present disclosure. Fig. Figure 8 is a schematic cross-sectional view of a section of a battery device according to an embodiment of the present disclosure. Fig. Figure 9 is a schematic perspective exploded view of a battery device according to another embodiment of the present disclosure. Fig. Figure 10 is a schematic perspective view of a second housing. Fig. Figure 11 is a schematic perspective exploded view of a second housing and a multitude of plate elements. Fig. Figure 12 is a schematic cross-sectional view of a battery device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] To facilitate understanding of the description of an embodiment of the present disclosure, elements described by the same symbol in the accompanying drawings are the same elements. Some components in the accompanying drawings are exaggerated, omitted, or shown schematically, and the sizes of each component do not fully reflect the actual dimensions.

[0039] In addition, in order to clarify the core of the present revelation, descriptions of elements and techniques that are well known through conventional techniques are omitted, and the present revelation is described in detail below with reference to the accompanying drawings.

[0040] In the following diagram, the X-axis represents the thickness direction of battery cell 121, the Y-axis represents the height direction of battery cell 121, and the Z-axis represents the width direction of battery cell 121. However, these directions are arbitrarily defined for ease of understanding, and the directions mentioned above can be modified and applied as needed.

[0041] Fig. Figure 1 is a schematic perspective view of a battery device 100 according to an embodiment of the present disclosure, and Fig. 2 schematically represents a cross-section along line II' of Fig. 1. In Fig. 2 is a battery cell 121, not shown in cross-section.

[0042] As in Fig. 1 and Fig. As shown in Figure 2, a battery device 100 according to one embodiment of the present disclosure can comprise a housing 110 containing a receiving space 113, a battery cell arrangement 120 housed in the housing 110 and containing a plurality of battery cells 121, a cooling fluid provided in the receiving space 113, and at least one cooling element 130 arranged between the plurality of battery cells 121. The at least one cooling element 130 can comprise a body region 131 arranged between the plurality of battery cells 121, a first curved region 132 curved on one side of the body region 131, and a second curved region 133 curved on the other side of the body region 131.

[0043] In a preferred embodiment, the housing 110 can comprise a first housing 111 and a second housing 112. Both the first housing 111 and the second housing 112 can contain the receiving space 113. The first housing 111 and the second housing 112 can have a certain degree of rigidity.

[0044] In a state where the first housing 111 and the second housing 112 are separated and the receiving space 113 is open, the battery cell assembly 120 can be accommodated in the receiving space 113. In addition to the battery cell assembly 120, the receiving space 113 can also accommodate components related to the battery cell assembly 120, such as a busbar.

[0045] Then the first housing 111 and the second housing 112 can be arranged next to each other, and a fastening element 115 can be attached to a coupling hole 116 which is provided in both the first housing 111 and the second housing 112, thereby coupling the first housing 111 and the second housing 112.

[0046] A cooling fluid can be provided in the receiving chamber 113. In a preferred embodiment, the cooling fluid can contain an insulating oil. Additionally, the battery cell arrangement 120 can be immersed in the cooling fluid.

[0047] In a preferred embodiment, the housing 110 can include a cooling fluid supply section 119. The cooling fluid supply section 119 can be a cooling port. The cooling fluid can be supplied to the receiving chamber 113 through the cooling port, or the cooling fluid supplied to the receiving chamber 113 can be discharged to the outside of the housing 110.

[0048] In some cases, the cooling fluid supply section 119 may include a supply port for supplying the cooling fluid to the receiving chamber 113 and a discharge port for discharging the cooling fluid from the receiving chamber 113.

[0049] In a preferred embodiment, the cooling fluid can be a fluid that acts as an electrical insulator. For example, the cooling fluid can be an insulating oil consisting mainly of non-conductive oil. However, the cooling fluid can be changed to another fluid within a range of fluids capable of cooling the battery device 100.

[0050] In a preferred embodiment, the battery cell arrangement 120 can contain a plurality of battery cells 121. An electrode arrangement can be housed within the battery cell 121. The electrode arrangement can include a cathode plate, an anode plate, and a separator, and the electrode arrangement and the electrolyte can be housed within the battery cell 121. To seal the interior of the battery cell 121, the battery cell 121 can include a sealing section 122. The sealing section 122 can be a portion of a region in which the battery cell 121 is sealed.

[0051] The battery cell 121 can be housed in the receiving space 113. The battery cell 121 can be arranged such that a bottom surface 123 faces the second housing 112 and the sealing section 122 faces the first housing 111. The bottom surface 123 of the battery cell 121 can be spaced apart from the sealing section 122 in a vertical direction (Y-direction) of the battery cell 121.

[0052] In the battery cell 121, the electrode arrangement receiving space 113, which is a space in which the electrode arrangement is housed, can be arranged between the sealing section 122 and the bottom surface 123 in a thickness direction cross-section (XY plane) of the battery cell 121.

[0053] Several battery cells 121 can be stacked or arranged such that the electrode assembly receiving spaces 113, in which the electrode assembly is housed, face each other. In a preferred embodiment, a cushion element 124 can be provided between the plurality of battery cells 121. The cushion element 124 can be made of a material containing mica and can provide surface pressure for the battery cells 121 and serve to cool them.

[0054] At least one cooling element 130 can be arranged between the plurality of battery cells 121. In a preferred embodiment, at least one cooling element 130 can comprise a body region 131, which is arranged in a region corresponding to the electrode arrangement receiving space 113 of the battery cell 121, a first curved region 132, which is bent in a +Y direction at one end of the body region 131, and a second curved region 133, which is bent in a -Y direction at one end of the body region 131.

[0055] In a preferred embodiment, at least one cooling element 130 can be immersed in a cooling fluid in the receiving chamber 113. In a preferred embodiment, at least one cooling element 130 can comprise a plurality of cooling elements 130. The plurality of cooling elements 130 can be immersed in the cooling fluid.

[0056] All components arranged in the battery cell assembly 120 and the receiving chamber 113 can be immersed in the cooling fluid.

[0057] In a preferred embodiment, the first curved region 132 can face the sealing section 122 and the second curved region 133 can face the bottom surface 123. Alternatively, in a thickness-direction cross-section (XY plane) of the battery cell 121, at least one section of the first curved region 132 and at least one section of the sealing section 122 of the battery cell 121 can overlap each other in the height direction (Y direction) of the battery cell 121.

[0058] Furthermore, in a thickness-direction cross-section (XY plane) of the battery cell 121, at least one section of the second curved area 133 and at least one section of the bottom surface 123 of the battery cell 121 can overlap each other in the height direction (Y direction) of the battery cell 121.

[0059] The cooling element 130 can perform a heat dissipation function. The cooling element 130 can improve the cooling efficiency of an area corresponding to the electrode assembly receiving space 113 in the battery cell 121. For example, the cooling element 130 can exchange heat with a cooling fluid through the first curved area 132 and the second curved area 133. Additionally, the body area 131, which is connected to the first curved area 132 and the second curved area 133, can improve the cooling efficiency of an area corresponding to the electrode assembly receiving space 113 in the battery cell 121.

[0060] In a preferred embodiment, the plurality of cooling elements 130 can have different types. For example, one cooling element 130 can comprise a body region 131, a first curved region 132, and a second curved region 133, and another cooling element 130 can comprise a body region 131, a first curved region 132, a second curved region 133, a third curved region 134, and a fourth curved region 135. In a preferred embodiment, in the other cooling element 130, the body region 131, the first curved region 132, the second curved region 133, the third curved region 134, and the fourth curved region 135 can be formed from a single material. For example, the other cooling element 130 can be integral.

[0061] The third curved area 134 can face the first housing 111 and can be a region bent in the +Y direction at one end of the cooling element 130. The third curved area 134 can face the first curved area 132 and can be bent in the opposite direction to the direction in which the first curved area 132 is bent.

[0062] The fourth curved area 135 can face the second housing 112 and can be a region bent in the Y-direction at one end of the cooling element 130. The fourth curved area 135 can face the second curved area 133 and can be bent in the opposite direction to the direction in which the second curved area 133 is bent.

[0063] In a preferred embodiment, the cross-sectional shape of the battery cell 121 of the cooling element 130, which includes the first curved area 132, the second curved area 133, the third curved area 134 and the fourth curved area 135, can have an “I” shape in the thickness direction.

[0064] Furthermore, in a preferred embodiment, the cross-sectional shape of the battery cell 121 of the cooling element 130, which includes the first curved region 132 and the second curved region 133, can have a ]- or [-shape in one thickness direction. In some cases, a cooling element 130 with a ]-shape and a cooling element 130 with a [[-shape] can be combined to form an 'I'-shaped cooling element 130.

[0065] The multitude of cooling elements 130 can have different shapes, and the cooling elements 130, which have different shapes, can be arranged between the multitude of battery cells 121.

[0066] Fig. Figure 3 schematically represents a cross-section of a cooling element 130 according to an embodiment of the present disclosure. Fig. Figure 3 shows the cooling element 130 in a cross-section of the battery cell 121 in one thickness direction (X-direction). Hatching lines are in Fig. 3 not shown.

[0067] As in Fig. As shown in Figure 3, the cooling element 130 according to one embodiment of the present disclosure can include a body region 131. The first curved region 132 can extend to one side of the body region 131, and the second curved region 133 can extend to the other side of the body region 131.

[0068] The first curved area 132 can be formed by bending a first end 130a of the cooling element 130 in a first direction, and the second curved area 133 can be formed by bending a second end 130b of the cooling element 130 in a second direction.

[0069] The first direction can be a direction in which the first end 130a of the cooling element 130 rotates counterclockwise relative to the body area 131 in the thickness direction of the battery cell 121 or in the cross-section in the thickness direction (XY plane) of the cooling element 130.

[0070] The second direction can be a direction in which the second end 130b of the cooling element 130 rotates clockwise relative to the body area 131 in the thickness direction of the battery cell 121 or in the cross-section in the thickness direction (XY plane) of the cooling element 130.

[0071] In a preferred embodiment, the first curved region 132 and the second curved region 133 can face each other in the cross-section in the thickness direction (XY plane) of the at least one cooling element 130. That is, in the cross-section in the thickness direction (XY plane) of the cooling element 130, at least one section of the first curved region 132 and at least one section of the second curved region 133 can overlap each other in the height direction (Y direction) of the cooling element 130.

[0072] In a preferred embodiment, the cooling element 130 can be made of a metal-containing material. Furthermore, in a preferred embodiment, the body region 131 of the cooling element 130 can be made of a metal-containing material. For example, the body region 131 can be made of a material containing at least one of aluminum, stainless steel, or the like. Accordingly, a cooling element 130 with a relatively high thermal conductivity can be implemented. In this way, the cooling element 130 can be made of a material with a relatively high thermal conductivity. Consequently, the cooling efficiency of the battery cell arrangement 120 can be improved.

[0073] In some cases, the first curved area 132 and the second curved area 133 may be formed from a different material than the body area 131. For example, the first curved area 132 and the second curved area 133 may also be formed from a material containing metal, but may be formed from a different material than the body area 131.

[0074] Fig. Figure 4 schematically represents a cross-section of a plurality of cooling elements 130 according to an embodiment of the present disclosure. Fig. Figure 4 shows the cooling elements 130 as a cross-section in one thickness direction (X-direction) of the battery cell 121. Hatching lines are in Fig. 4 not shown.

[0075] As in Fig. As shown in Figure 4, in a preferred embodiment of the present disclosure, the cooling element 130 can be used by combining a plurality of cooling elements 130. For example, an adhesive surface 136 can be formed on the body region 131 of the cooling element 130. The plurality of cooling elements 130 can be coupled to the adhesive surfaces 136 by contacting the adhesive surfaces 136 in a state in which the adhesive surfaces 136 are facing each other.

[0076] In this case, the bonding surface 136 can be provided with an adhesive material, such as a tape or glue. Alternatively, the plurality of cooling elements 130 can be coupled together using bolts or the like. A method for coupling the plurality of cooling elements 130 is not necessarily limited by the present disclosure.

[0077] In the multiple cooling elements 130 that are coupled together, each of the first curved sections 132 can face each other, with the respective body sections 131 arranged between them. Additionally, each second curved section 133 can face each other, with the respective body sections 131 arranged between them.

[0078] Fig. Figure 5 schematically represents a cross-section of a plurality of cooling elements 130 and an insulating element 140 according to an embodiment of the present disclosure. Fig. Figure 5 shows a cross-section of the multiple cooling elements 130 and the insulating element 140 in a cross-section of the battery cell 121 in one thickness direction (X-direction). Hatching lines are in Fig. 5 not shown.

[0079] As in Fig. As shown in Figure 5, the insulating element 140 can be arranged between the plurality of cooling elements 130 in a preferred embodiment of the present disclosure.

[0080] The insulating element 140 can contain a material with a relatively low thermal conductivity. In a preferred embodiment, the insulating element 140 can be made of a different material than the cooling element 130 or the body region 131.

[0081] The insulating element 140 can face a plurality of body regions 131. Accordingly, the insulating element 140 can be arranged between the plurality of body regions 131. The insulating element 140 can be coupled to the plurality of cooling elements 130. For example, one surface of the insulating element 140 can be coupled to the adhesive surface 136 of one cooling element 130, and the other surface of the insulating element 140 can be coupled to the adhesive surface 136 of another cooling element 130. In this case, an adhesive, a tape, or the like can be applied to each adhesive surface 136. However, a coupling method is not necessarily limited by the present disclosure.

[0082] Furthermore, in a preferred embodiment, in the plurality of cooling elements 130, each of the first curved sections 132 can face each other, with the insulating element 140 arranged between them, and each of the second curved sections 133 can face each other, with the insulating element 140 arranged between them. The height of the insulating element 140 can be at least equal to the height of the plurality of cooling elements 130.

[0083] In a preferred embodiment, a single insulating element 140 can be provided between the plurality of cooling elements 130, for example, a pair of cooling elements 130. In this way, the pair of cooling elements 130 and the single insulating element 140 can be coupled or attached to each other to form a single cooling unit. This single cooling unit can be arranged between a pair of battery cells 121 to cool the battery cell arrangement 120 and prevent heat propagation from the battery cell arrangement 120.

[0084] As in Fig. 2 and Fig. As illustrated in Figure 5, the body area 131 can be arranged between the plurality of battery cells 121 and can be arranged such that it faces the electrode arrangement receiving space 113 of each of the plurality of battery cells 121. Accordingly, the insulating element 140, which is arranged between and facing the body areas 131, can function as an insulating layer between the plurality of battery cells 121.

[0085] In a preferred embodiment, the insulating element 140 can be made of a material with a lower thermal conductivity than the body region 131. Accordingly, the insulating element 140 can minimize or prevent the propagation and / or transfer of heat and / or flame between adjacent battery cells 121. Consequently, heat propagation from the battery device 100 can be minimized or prevented.

[0086] In a preferred embodiment, the insulating element 140 can be formed from a material containing mica.

[0087] In a preferred embodiment, the insulating element 140 can also be made of a material with a lower thermal conductivity than the body region 131 or of a material containing mica.

[0088] Fig. Figure 6 schematically represents cross-sections of a plurality of cooling elements 130, an insulating element 140 and a support element 150 according to an embodiment of the present disclosure. Fig. Figure 6 shows the multiple cooling elements 130, the insulating element 140, and the support element 150 in a cross-section of the battery cell 121 in one thickness direction (X-direction). Hatching lines are in Fig. 6 not shown.

[0089] As in Fig. 2 and Fig. As shown in Figure 6, in a preferred embodiment of the present disclosure the battery device 100 may further include a support element 150 which is arranged between each of the first curved areas 132 and the housing 110.

[0090] The support element 150 can be coupled to a pair of cooling elements 130 and the insulating element 140 in a state where the pair of cooling elements 130 and the insulating element 140 are fully coupled to each other. The coupling method of the support element 150 can be the same as the coupling method of the cooling element 130 and the insulating element 140 described above.

[0091] In the cross-section in the thickness direction of the battery cell 121 or the cross-section in the thickness direction of the cooling element 130, one surface of the support element 150 can cover a pair of first curved areas 132 and the insulating element 140. The other surface of the support element 150 can face or contact an inner surface of the first housing 111.

[0092] The support element 150 can minimize or prevent a gap between the multiple cooling elements 130 and the insulating element 140 and the first housing 111. The support element 150 can improve the assembly of the battery device 100.

[0093] In a preferred embodiment, the support element 150 can be made of a material containing at least one polyurethane or silicone. In a preferred embodiment, the support element 150 can be deformable. For example, the support element 150 can fill a space formed between the plurality of cooling elements 130 and the first housing 111 and / or a space formed between the insulating element 140 and the first housing 111.

[0094] The support element 150 can be compressed or expanded depending on the volume of the space. The support element 150 can fill the space by deforming, compressing, or expanding it. Accordingly, the multiple cooling elements 130 and the first housing 111 can be in close contact with each other, and the insulating element 140 and the first housing 111 can also be in close contact with each other. Furthermore, the distance between the first housing 111 and the multiple cooling elements 130, and the distance between the first housing 111 and the insulating element 140, can be minimized or eliminated. This can contribute to improving the quality of the battery device 100.

[0095] Fig. Figure 7 schematically represents a partial cross-section of a battery device 100 according to an embodiment of the present disclosure. In this case, Fig. Figure 7 represents a cross-section of a battery cell 121 in the thickness direction and represents a position corresponding to line II' of Fig. 1 corresponds to. Fig. 7 Hatching lines for the battery cell 121, the cooling element 130, the insulating element 140 and the support element 150 are not shown.

[0096] As in Fig. As shown in Figure 7, in a preferred embodiment of the present disclosure, a plurality of battery cells 121 can be spaced apart from the housing 110. Furthermore, the first curved region 132 and the second curved region 133 can be arranged in a separation space S formed by separating the plurality of battery cells 121 from the housing 110, and can face the housing 110 in the separation space S.

[0097] The separation space S can be contained within the receiving space 113. In a thickness-direction cross-section (XY plane) of the battery cells 121, the separation space S can contain a plurality of separation spaces S.

[0098] In a preferred embodiment, the plurality of battery cells 121 can be spaced apart from the first curved area 132 and the second curved area 133.

[0099] The plurality of separation spaces S can include a first separation space S1, which is a space formed by separating the inner surface of the first housing 111 from the battery cell 121, and a second separation space S2, which is formed by separating an inner surface of the second housing 112 from the bottom surface 123 of the battery cell 121. For example, the first separation space S1 can be a space formed by separating the sealing section 122 of the battery cell 121 from the inner surface of the first housing 111. The second separation space S2 can be a space formed by separating the bottom surface 123 of the battery cell 121 from the inner surface of the second housing 112.

[0100] The first curved section 132 can be arranged in the first separation space S1, and the second curved section 133 can be arranged in the second separation space S2. That is, the first curved section 132 can be arranged between the sealing section 122 and the first housing 111, and the second curved section 133 can be arranged between the bottom surface 123 of the battery cell 121 and the second housing 112.

[0101] A cooling fluid can be present in the first separation space S1 and the second separation space S2. In this case, the cooling fluid can be present anywhere in the receiving space 113. The first separation space S1 and the second separation space S2 described above can be contained within the receiving space 113, and the receiving space 113 can be formed between a plurality of battery cells 121 and can also contain a separation space that is formed when the plurality of battery cells 121 are spaced apart from each other in the thickness direction (X-direction) of the battery cells.

[0102] The first curved area 132, the body area 131, and the second curved area 133 can be immersed in the cooling fluid. In this case, since the cooling fluid is present in the receiving chamber 113, the battery cell assembly 120 can also be immersed in the cooling fluid.

[0103] Areas with a relatively large amount of cooling fluid in the receiving space 113 can be a first separation space and a second separation space. Accordingly, the area where the first curved area 132 and the second curved area 133 are in contact with the cooling fluid can be increased. Therefore, the cooling efficiency of the battery cell assembly 120 can be improved.

[0104] Furthermore, for example, one end (+Y-direction end) of the insulating element 140 can be in contact with the support element 150, and the other end (-Y-direction end) of the insulating element 140 can be in contact with the inner surface of the second housing 112. Accordingly, a pair of battery cells 121 can be insulated from each other in the thickness direction (X-direction) of the battery cell 121.

[0105] In a preferred embodiment, the battery cell 121 can include an outer material 126 forming an outer surface, and an electrode arrangement and an electrolyte can be housed within the outer material 126. The outer material 126 can be sealed and can include at least one sealing section 122. In a preferred embodiment, the battery cell 121 can be a pouch-type battery cell 121.

[0106] The outer material 126 can be in the form of a film in which polyethylene terephthalate (PET), nylon and aluminium are stacked.

[0107] In a preferred embodiment, a cooling groove 125 can be formed on the bottom surface 123 of the battery cell 121. The cooling groove 125 can be implemented by forming the outer material 126 concavely in a direction facing the electrode arrangement.

[0108] The cooling groove 125 can increase the contact area between the base surface 123 of the battery cell 121 and the cooling fluid. Accordingly, the cooling efficiency of the battery cell 121 can be improved.

[0109] In a preferred embodiment, each of the first curved region 132 and the support element 150 can have a height that is greater than the height of one end of the battery cell 121 in the cross-section in the thickness direction (XY plane) of the plurality of battery cells 121. In this case, one end of the battery cell 121 can be the sealing section 122 of the battery cell 121. For example, one end of the battery cell 121 can be an end of the sealing section 122 of the battery cell 121 in the +Y direction.

[0110] Furthermore, in a preferred embodiment, the height of the support element 150 in the cross-section in the thickness direction (XY plane) of the plurality of battery cells 121 can be higher than the height of the first curved region 132.

[0111] In a preferred embodiment, the support element 150 can also be arranged between the second curved region 133 and the second housing 112, but the presence of the support element 150 in a region corresponding to the second curved region 133 is not necessarily limited by the present disclosure.

[0112] The support element 150 can contact a pair of first curved areas 132 that are adjacent to each other or facing each other, and in some cases the support element 150 can contact a pair of second curved areas 133 that are adjacent to each other or facing each other.

[0113] Additionally, in a preferred embodiment, a single support element 150 or a support element 150 covering the entire inner surface of the first housing 111 can be provided with respect to the support element 150. For example, the width of the support element 150 in the thickness direction (X-direction) of the battery cell 121 can be at least equal to the width of the battery cell array 120. In other words, the single support element 150 can cover all upper sections of the plurality of battery cells 121 (or the upper sections of the sealing sections 122), the plurality of first curved areas 132, and the plurality of insulating elements 140. This can improve the assembly efficiency of the battery device 100.

[0114] Fig. Figure 8 schematically represents a partial cross-section of a battery device 100 according to an embodiment of the present disclosure. Fig. Figure 8 represents a cross-section of a battery cell 121 in the thickness direction and represents a position corresponding to line II' of Fig. 1 corresponds to. Fig. 8 Hatching lines for the battery cell 121, the cooling element 130, the insulating element 140 and the support element 150 are not shown.

[0115] As in Fig. As shown in Figure 8, in a preferred embodiment the insulating element 140 can be provided multiple times and a plurality of insulating elements 140 can be made of different materials.

[0116] For example, the plurality of insulating elements 140 can include: a first insulating element 141, which faces a body region 131 of a cooling element 130 of the plurality of cooling elements 130, and a second insulating element 142, which is arranged between the first insulating element 141 and a body region 131 of another cooling element 130 of the plurality of cooling elements 130 and is made of a different material than the first insulating element 141.

[0117] The first insulating element 141 and the second insulating element 142 can be in contact with each other and can be arranged between the plurality of body regions 131. The first insulating element 141 and the second insulating element 142 can each be attached to the plurality of body regions 131. In this case, the plurality of body regions 131 can be body regions 131 of different cooling elements 130. Accordingly, the insulation performance of the battery cell arrangement 120 can be improved and heat dissipation from the battery device 100 can be minimized or prevented.

[0118] In a preferred embodiment, the first insulating element 141 can be formed from a material containing mica or silicone.

[0119] Furthermore, in a preferred embodiment, the second insulating element 142 can be formed from a material containing mica or silicone.

[0120] However, if the first insulating element 141 is made of mica, the second insulating element 142 can be made of silicone, and vice versa. Accordingly, the insulation efficiency can be improved and the surface pressure of the battery cell 121 can be increased.

[0121] Fig. Figure 9 is a schematic perspective exploded view of a battery device 100 according to another embodiment of the present disclosure, Fig. Figure 10 is a schematic perspective view of the second housing 112 and Fig. Figure 11 is a schematic perspective exploded view of a second housing 112 and a plurality of plate elements 160.

[0122] As in Fig. 2, Fig. 9 and Fig. As shown in Figure 11, the battery device 100 according to an embodiment of the present disclosure can further comprise a plurality of plate elements 160 surrounding a plurality of battery cells 121, arranged between the plurality of battery cells 121 and the housing 110 in the receiving space 113, and comprising at least one arrangement support projection 161. Additionally, the housing 110 can be formed on an inner surface facing the plurality of plate elements 160 and can comprise at least one arrangement support groove 114 into which at least one arrangement support projection 161 is inserted.

[0123] In a preferred embodiment, the plurality of cooling elements 130 can have a width that is at least equal to the width of the battery cell 121. The plurality of cooling elements 130 can cover an area corresponding to the electrode arrangement receiving space 113 in the battery cell 121.

[0124] In a preferred embodiment, the battery device 100 can include at least one outlet opening 117 on one side of the first housing 111, and at least one outlet opening 117 can be connected to the receiving chamber 113. The at least one outlet opening 117 can be closed by at least one outlet valve 118.

[0125] For example, the at least one outlet opening 117 can contain a plurality of outlet openings 117, and the at least one outlet valve 118 can contain a plurality of outlet valves 118. An outlet valve 118 can be inserted into an outlet opening 117. For example, the outlet valve 118 can be in the form of a shaft capable of closing the outlet opening 117 and can be removably provided within the outlet opening 117. However, the shapes of the outlet opening 117 and the outlet valve 118 are not necessarily limited by this disclosure. By separating the outlet valve 118 from the outlet opening 117 and opening the outlet opening 117, the pressure in the receiving chamber 113 can be controlled.

[0126] In a preferred embodiment, the battery cell 121 can contain a plurality of electrode leads 127. The plurality of electrode leads 127 can each be electrically connected to a cathode plate and an anode plate of the battery cell 121 and can be exposed to the outside of the battery cell 121.

[0127] The plurality of electrode leads 127 can each be connected to a plurality of busbar elements 171. The plurality of busbar elements 171 can be contained in a busbar assembly 170. The busbar assembly 170 can contain the plurality of busbar elements 171 and a busbar plate that supports the plurality of busbar elements 171. The busbar plate can be made of a material that has electrical insulation. The busbar assembly 170 can be provided multiple times, and a plurality of busbar assemblies 170 can each be provided on one side and the other side of the battery cell assembly 120.

[0128] For example, a busbar element 171 and a busbar plate can be arranged on one side of the battery cell assembly 120, and another busbar element 171 and another busbar plate can be arranged on the other side of the battery cell assembly 120. In this case, since the battery cell assembly 120 contains a plurality of battery cells 121, the one busbar element 171 arranged on one side of the battery cell assembly 120 can be understood as a plurality of busbar elements 171, and the one busbar element 171 arranged on the other side of the battery cell assembly 120 can also be understood as a plurality of busbar elements 171.

[0129] The busbar element 171 can be connected to a sensing arrangement 180. Multiple sensing arrangements 180 can be provided, and multiple sensing arrangements 180 can be arranged on one side and the other side of the battery cell arrangement 120. The sensing arrangement 180 can include a printed circuit board (PCB) and can be electrically connected to multiple battery cells 121. In some cases, if the battery cell arrangement 120 includes a temperature sensor, a voltage sensor, and the like, the sensing arrangement 180 can be connected to the temperature sensor and the voltage sensor.

[0130] In a preferred embodiment, the detection arrangement 180 and the busbar arrangement 170 can be covered by an insulating cover 190. Multiple insulating covers 190 can be provided, and a plurality of insulating covers 190 can be arranged on one side and the other side of the battery cell arrangement 120. The plurality of insulating covers 190 can be made of a material that has electrical insulating properties.

[0131] In a preferred embodiment, a battery cell 121 located at an outermost end of one side of the battery cell arrangement 120 can face a first outermost cooling element 130aa, and a battery cell 121 located at an outermost end of the other side of the battery cell arrangement 120 can face a second outermost cooling element 130bb. For example, the cross-sectional shapes of the first outermost cooling element 130aa and the second outermost cooling element 130bb can be in the form of a ']' and / or a '['.

[0132] The plate element 160 can be arranged between the first outermost cooling element 130aa and the housing 110, and the plate element 160 can also be arranged between the second outermost cooling element 130bb and the housing 110.

[0133] The plate element 160 can be made of a material that has electrical insulation. Multiple plate elements 160 can be provided. Each plate element 160 can include at least one arrangement support projection 161. The arrangement support projection 161 can project in a direction oriented towards the housing 110.

[0134] The housing 110 can include at least one mounting support groove 114 on a surface facing the mounting support projection 161. The mounting support projection 161 can be inserted into the mounting support groove 114. The mounting support groove 114 can be provided in a shape corresponding to the mounting support projection 161.

[0135] The arrangement support projections 161 can be provided continuously in one vertical direction (Y-direction) of the plate element 160. The arrangement support grooves 114 can also be provided continuously in one vertical direction (Y-direction) of the housing 110 or in one vertical direction of the plate element 160.

[0136] The arrangement support groove 114 can be provided in the first housing 111 and the second housing 112. If the first housing 111 and the second housing 112 are coupled, the arrangement support grooves 114 provided in each of the first housing 111 and the second housing 112 can be coupled to form one arrangement support groove 114. Alternatively, if the first housing 111 and the second housing 112 are coupled, the arrangement support grooves 114 provided in each of the first housing 111 and the second housing 112 can be connected to each other. In this case, the arrangement support grooves 114 provided in each of the first housing 111 and the second housing 112 can be connected in a vertical direction of the first housing 111 or in a vertical direction of the second housing 112.

[0137] In a preferred embodiment, when the plate element 160 is stored in the receiving space 113, the arrangement support projection 161 can be moved along the arrangement support groove 114 formed in the second housing 112, as shown in Fig. Figure 10 shows that in this case, the arrangement support projection 161 can be inserted into the arrangement support groove 114 in one end of the second housing 112 in the +Y direction, and the plate element 160 can be moved in the -Y direction in a state where the arrangement support projection 161 is inserted into the arrangement support groove 114. Then, as shown in Fig. Figure 9 shows a state in which the arrangement support projection 161 is inserted into the arrangement support groove 114 formed in the first housing 111. When the first housing 111 is moved in the -Y direction, the arrangement of the first housing 111 and the second housing 112 is completed. Accordingly, the assembly efficiency of the plate element 160 can be improved, and the assembly efficiency of the first housing 111 and the second housing 112 can also be improved.

[0138] In a preferred embodiment, as in Fig. As shown in Figure 10, if a width W1 of the arrangement support groove 114 is designated as a width W1 of the arrangement support groove 114 in the thickness direction of the battery cell 121, the width W1 of the arrangement support groove 114 can be widest at the end of the second housing 112 in the +Y direction and can be narrowest on the bottom surface 123 of the second housing 112 or at the end of the second housing 112 in the -Y direction. Furthermore, the width W1 of the arrangement support groove 114 can become narrower towards the bottom surface 123 of the second housing 112 or the end of the second housing 112 in the -Y direction.

[0139] In this case, the shape of the arrangement support projection 161 can be formed to match the shape of the arrangement support groove 114. For example, if a width W2 of the arrangement support projection 161 is designated as a width W2 of the arrangement support projection 161 in the thickness direction of the battery cell 121, the width W2 of the arrangement support projection 161 can be less than or equal to the width W1 of the arrangement support groove 114. Furthermore, for example, a maximum width W1 of the arrangement support groove 114 can be greater than or equal to a maximum width W2 of the arrangement support projection 161.

[0140] In a preferred embodiment, the shape of the arrangement support projection 161 can be deformed based on a reference point 161a. For example, the arrangement support projection 161 can have a maximum width W2 at the reference point 161a. The width W2 of the arrangement support projection 161 can decrease when the arrangement support projection 161 moves in the +Y direction relative to the maximum width W2 of the arrangement support projection 161. Additionally, the width W2 can decrease in the -Y direction relative to the maximum width W2. In this case, the width of the arrangement support projection 161 can be the shortest distance from a surface of the plate element 160 to an area where the arrangement support projection 161 projects, but can also be the shortest distance in a direction parallel to the X-axis.

[0141] The above-mentioned arrangement support projection 161 and the arrangement support groove 114 can be provided multiple times, and an arrangement support projection 161 can be inserted into the arrangement support groove 114 formed in the first housing 111 and the arrangement support groove 114 formed in the second housing 112.

[0142] Furthermore, a plurality of arrangement support projections 161 can be formed in a plate element 160, and the plurality of arrangement support projections 161 on the one plate element 160 can be spaced apart from each other in a lateral direction of the battery cell 121.

[0143] Fig. Figure 12 is a schematic cross-sectional view of a battery device 100 according to an embodiment of the present disclosure. Fig. 12 is a cross-section corresponding to line II' of Fig. 1 corresponds to, and in Fig. 12 hatching lines of a battery cell 121, a cushion element 124, a cooling element 130, an insulating element 140 and a support element 150 have been omitted.

[0144] As in Fig.As shown in Figure 12, a battery device 100 according to one embodiment of the present disclosure can comprise a housing 110 containing insulating oil or cooling water in a receiving chamber 113, a battery cell arrangement 120 containing a plurality of battery cells 121 immersed in the insulating oil or cooling water in the receiving chamber 113 and spaced apart from the housing 110, a plurality of cooling elements 130 arranged between the plurality of battery cells 121, and an insulating element 140 arranged between the plurality of cooling elements 130 and made of a different material than the plurality of cooling elements 130. In this case, each plurality of cooling elements 130 can comprise a curved region arranged in a separation chamber formed by separating the plurality of battery cells 121 from the housing 110 in the receiving chamber 113.

[0145] In a preferred embodiment, the curved region can include a first curved region 132 facing one side 121a of the battery cell 121 and a second curved region 133 facing the other side 121b of the battery cell 121.

[0146] The support element 150 can be arranged between the first curved section 132 and the first housing 111. Additionally, the insulating element 140 can be arranged between the multiple cooling elements 130. In this case, the multiple cooling elements 130 and the insulating element 140 can be coupled or attached to one another.

[0147] The cross-sectional shape of the multiple cooling elements 130 and the insulating element 140 can be an "I" shape. The multiple cooling elements 130 and the insulating element 140 can be arranged between a pair of battery cells 121.

[0148] The multiple cooling elements 130 can be made of a material with a relatively high thermal conductivity, and the insulating element 140 can be made of a material with a relatively low thermal conductivity. For example, the thermal conductivity of the insulating element 140 can be lower than the thermal conductivity of the multiple cooling elements 130. Furthermore, for example, the insulating element 140 can be made of a material containing mica, and the multiple cooling elements 130 can be made of a material containing at least one of the components of aluminum, stainless steel, or the like.

[0149] The multitude of cooling elements 130 can improve the cooling efficiency of the battery cell arrangement 120, and the insulating element 140 can minimize or block heat transfer or heat transmission between the multitude of battery cells 121.

[0150] Accordingly, the cooling efficiency of the battery device 100 can be improved, while heat propagation from the battery device 100 is minimized or prevented.

[0151] Furthermore, in some cases the materials of the first curved area 132 and the body area 131 of the multiple cooling elements 130 may differ, and the material of the body area 131 may also differ from the material of the second curved area 133. In this case, the materials of the first curved area 132 and the second curved area 133 may be identical or different from each other.

[0152] Accordingly, the present disclosure provides a battery device according to the following aspects.

[0153] Aspect 1) A battery device comprising: a housing containing a receiving space; a battery cell arrangement housed in the housing and containing a plurality of battery cells; a cooling fluid provided in the receiving space; and at least one cooling element arranged between the plurality of battery cells, wherein the at least one cooling element comprises: a body region arranged between the plurality of battery cells; a first curved region curved on one side of the body region; and a second curved region curved on the other side of the body region.

[0154] Aspect 2) The battery device according to Aspect 1, which further comprises: an insulating element arranged between the plurality of cooling elements.

[0155] Aspect 3) Battery device according to aspect 2, which has one or more of the following features (i) to (ii) individually or in combination: (i) wherein the insulating element is formed from a material other than the body area, and / or (ii) wherein the body area is formed from a material containing metal.

[0156] Aspect 4) Battery device according to aspect 2 or 3, wherein in the plurality of cooling elements each of the first curved areas faces each other, with the insulating element arranged between them, and each of the second curved areas faces each other, with the insulating element arranged between them.

[0157] Aspect 5) Battery device according to Aspect 3, which has one or more of the following features (i) to (ii) individually or in combination: (i) wherein the insulating element is formed from a material with a lower thermal conductivity than the body area, and / or (ii) wherein the insulating element is formed from a material containing mica.

[0158] Aspect 6) Battery device according to aspects 1 to 3, wherein the plurality of battery cells is spaced away from the housing, and the first curved area and the second curved area are arranged in a separation space formed by separating the plurality of battery cells from the housing and are facing the housing in the separation space.

[0159] Aspect 7) Battery device according to one of aspects 1 to 3, wherein the first curved area and the second curved area face each other in a cross-section in the thickness direction of the at least one cooling element.

[0160] Aspect 8) Battery device according to aspect 4, comprising one or more of the following features (i) to (ii) individually or in combination: (i) further comprising: a support element arranged between each of the first curved regions and the housing, and / or (ii) wherein the support element arranged between each of the first curved regions and the housing is formed from a material comprising at least one of polyurethane and silicone.

[0161] Aspect 9) Battery device according to aspect 8, wherein each of the first curved areas and the support element has a height that is higher than a height of one end of the battery cells in a cross-section in the thickness direction of the plurality of battery cells.

[0162] Aspect 10) Battery device according to one of aspects 1 to 3, wherein the plurality of battery cells is spaced apart from the first curved area and the second curved area.

[0163] Aspect 11) Battery device according to aspect 2 or 3, wherein the insulating element is provided multiple times, the plurality of insulating elements having one or more of the following features (i) to (ii) individually or in combination: (i) wherein the plurality of insulating elements is formed from different materials, and / or (ii) wherein the plurality of insulating elements includes a first insulating element facing a body region of a cooling element of the plurality of cooling elements; and a second insulating element arranged between the first insulating element and a body region of another cooling element of the plurality of cooling elements, wherein the second insulating element is formed from a different material than the first insulating element.

[0164] Aspect 12) Battery device according to Aspect 11, comprising one or more of the following features (i) to (ii) individually or in combination: (i) wherein the first insulating element is formed from a material containing mica or silicone, and / or (ii) wherein the second insulating element is formed from a material containing mica or silicone.

[0165] Aspect 13) Battery device according to one of aspects 1 to 3, further comprising: a plurality of plate elements surrounding the plurality of battery cells and arranged between the plurality of battery cells and the housing in the receiving space, and comprising at least one arrangement support projection, and comprising one or more of the following features (i) to (ii), each alone or in combination: (i) wherein the housing comprises: at least one arrangement support groove formed on an inner surface facing the plurality of plate elements, and into which the at least one arrangement support projection is inserted, and / or (ii) wherein the cooling fluid contains an insulating oil and the battery cell arrangement and the at least one cooling element are immersed in the cooling fluid.

[0166] Aspect 14) A battery device comprising: a housing containing insulating oil or cooling water in a receiving space; a battery cell arrangement comprising a plurality of battery cells immersed in the insulating oil or cooling water in the receiving space and spaced apart from the housing; a plurality of cooling elements arranged between the plurality of battery cells; and an insulating element arranged between the plurality of cooling elements and formed from a different material than the plurality of cooling elements, wherein each plurality of cooling elements comprises a curved region arranged in a separating space formed by separating the plurality of battery cells from the housing in the receiving space.

[0167] Aspect 15) Battery device according to aspect 14, wherein the curved area comprises: a first curved area facing one side of the battery cell; and a second curved area facing the other side of the battery cell.

Claims

[1] A battery device comprising the following: a housing that contains a recording chamber; a battery cell arrangement housed within the casing and containing a large number of battery cells; a cooling fluid provided in the recording chamber; and at least one cooling element positioned between the multitude of battery cells, where the at least one cooling element contains the following: a body area located between the multitude of battery cells; a first curved area that is bent on one side of the body area; and a second curved area that is curved on the other side of the body area. [2] The battery device according to claim 1, which further comprises: an insulating element that is positioned between the multiple cooling elements. [3] Battery device according to claim 2, comprising one or more of the following features (i) to (ii), either alone or in combination: (i) wherein the insulating element is made of a different material than the body area, and / or (ii) wherein the body area is formed from a material containing metal. [4] Battery device according to claim 2 or 3, wherein in the plurality of cooling elements each of the first curved areas faces each other, with the insulating element arranged between them, and each of the second curved areas faces each other, with the insulating element arranged between them. [5] Battery device according to claim 3, comprising one or more of the following features (i) to (ii), either alone or in combination: (i) wherein the insulating element is made of a material with a lower thermal conductivity than the body area, and / or (ii) wherein the insulating element is formed from a material containing mica. [6] Battery device according to one of claims 1 to 3, wherein the plurality of battery cells is spaced apart from the housing, and the first curved area and the second curved area are arranged in a separation space formed by separating the plurality of battery cells from the housing and are facing the housing in the separation space. [7] Battery device according to one of claims 1 to 3, wherein the first curved area and the second curved area face each other in a cross-section in the thickness direction of the at least one cooling element. [8] Battery device according to claim 4, comprising one or more of the following features (i) to (ii), either alone or in combination: (i) which further includes: a support element positioned between each of the first curved areas and the housing, and / or (ii) wherein the support element, which is arranged between each of the first curved areas and the housing, is formed of a material which contains at least one of polyurethane and silicone. [9] Battery device according to claim 8, wherein each of the first curved regions and the support element has a height which is higher than a height of an end of the battery cells in a cross-section in the thickness direction of the plurality of battery cells. [10] Battery device according to one of claims 1 to 3, wherein the plurality of battery cells is spaced apart from the first curved region and the second curved region. [11] Battery device according to claim 2 or 3, wherein the insulating element is provided multiple times, and wherein the plurality of insulating elements has one or more of the following features (i) to (ii) individually or in combination: (i) wherein the plurality of insulating elements is formed from different materials and / or (ii) wherein the plurality of insulating elements comprises a first insulating element facing a body region of one cooling element of the plurality of cooling elements; and a second insulating element arranged between the first insulating element and a body region of another cooling element of the plurality of cooling elements, wherein the second insulating element is made of a different material than the first insulating element. [12] Battery device according to claim 11, comprising one or more of the following features (i) to (ii), either alone or in combination: (i) wherein the first insulating element is formed from a material containing mica or silicone and / or (ii) wherein the second insulating element is formed from a material containing mica or silicone. [13] Battery device according to any one of claims 1 to 3, further comprising: a plurality of plate elements surrounding the plurality of battery cells and arranged between the plurality of battery cells and the housing in the receiving space, and which include at least one arrangement support projection and exhibits one or more of the following characteristics (i) to (ii), either alone or in combination: (i) wherein the housing contains the following: at least one arrangement support groove formed on an inner surface facing the plurality of plate elements, and into which the at least one arrangement support projection is inserted, and / or (ii) wherein the cooling fluid contains an insulating oil and the battery cell assembly and the at least one cooling element are immersed in the cooling fluid. [14] A battery device comprising the following: a housing containing insulating oil or cooling water in a receiving chamber; a battery cell arrangement comprising a plurality of battery cells immersed in the insulating oil or cooling water in the receiving chamber and spaced apart from the housing; a multitude of cooling elements arranged between the multitude of battery cells; and an insulating element that is arranged between the multitude of cooling elements and is made of a different material than the multitude of cooling elements, wherein the plurality of cooling elements each contain a curved area which is arranged in a separation space formed by separating the plurality of battery cells from the housing in the receiving space. [15] Battery device according to claim 14, wherein the curved area includes: a first curved area facing one side of the battery cell; and a second curved area facing the other side of the battery cell.

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