Tempering plate, as well as battery storage arrangement with such a tempering plate
Patent Information
- Authority / Receiving Office
- ES · ES
- Patent Type
- Patents
- Current Assignee / Owner
- BENTELER AUTOMOBILTECHNIK GMBH
- Filing Date
- 2024-07-03
- Publication Date
- 2026-07-07
AI Technical Summary
Existing battery temperature control systems face challenges in achieving uniform temperature distribution and efficient heat transfer across battery cells, particularly in vertical arrangements, leading to inefficiencies in cooling or heating processes.
A temperature control plate with a three-layer structure comprising a central support plate and smooth upper and lower cover plates, featuring trapezoidal cooling channels and through-openings for fluid redirection, along with reinforcing strips for enhanced stability and uniform heat distribution.
The solution provides a cost-effective, high-load-bearing, and space-efficient design that ensures uniform temperature distribution and efficient heat transfer across battery cells, reducing stress and improving the overall performance and lifespan of battery systems.
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Abstract
Description
[0001] The invention relates to a temperature control plate with the features of claim 1 and a battery storage arrangement according to claim 14. A temperature control plate with the features in the preamble of claim 1 is known from FR 3 100 608 A1.
[0002] A battery's performance and lifespan depend on its operating temperature. To maintain optimal operating temperature, electric vehicles in particular are equipped with battery temperature control systems. These are typically cooling systems. Battery systems are also preheated to reduce internal resistance before charging.
[0003] Low-profile temperature control plates are particularly suitable for battery temperature management. These plates are placed inside the battery box and make contact with the batteries from below.
[0004] US patent 2013 / 171491 A1 discloses an arrangement for dissipating heat from battery cells. Temperature control plates are used in a vertical arrangement, alternating with battery cells. The temperature control plates have a multi-layered structure with a middle plate and end plates on both sides.
[0005] Channels are arranged on both sides of the central plate, which, due to the vertical arrangement of the temperature control plates, are designed to fill from bottom to top. Each vertically oriented temperature control plate has a coolant inlet at one end and a coolant outlet at the other.
[0006] Temperature control plates with a three-layer structure are also known from IT 2020 0003 1469 A1. An inlet and a return are located on the same edge of a plate. The upper and lower temperature control channels are connected to each other via a through-opening for the redirection of the temperature control fluid; this through-opening is a single slot-shaped opening for all temperature control channels simultaneously.
[0007] US patent 2023 / 272983 A1 discloses cooling plates for battery assemblies, wherein the cooling plates have a three-layer structure with two levels of cooling channels. The coolant is supplied on one side of the plate and discharged on the other side.
[0008] US 2024 / 213575 A1 describes another design of a cooling plate for cooling battery housings, as does US 2021 / 028927 A1.
[0009] The invention is based on the objective of demonstrating a temperature control plate and a battery storage arrangement with a temperature control plate that is suitable for temperature control of batteries arranged on opposite sides of the temperature control plate.
[0010] This problem is solved in a temperature control plate with the features of claim 1. A battery storage arrangement with such a temperature control plate is the subject of claim 14.
[0011] The dependent claims relate to advantageous further developments of the invention.
[0012] The temperature control plate according to the invention has a support plate between a smooth upper cover plate and a smooth lower cover plate. The support plate is connected to both cover plates. The upper cover plate serves for contact with an adjacent upper cell layer, which is formed from a plurality of battery cells, and the lower smooth cover plate serves for contact with an adjacent lower cell layer, which is formed from a plurality of battery cells. A thermally conductive film or a thermal conductor, as thin as possible, can be arranged on the smooth upper and lower surfaces of the cover plates. The aim is to establish contact with the adjacent batteries, which are to be either cooled or heated by the temperature control plate, with the largest possible area and good thermal conductivity. The cover plates are smooth in the sense that 100% of the contact surface with the cell layers is designed as temperature control contacts.The contact surfaces are particularly free of grooves, depressions or openings.
[0013] The support plate is provided with a cooling channel profile to form cooling channels between the support plate and the adjacent cover plates. The support plate is preferably at least 50% thicker than the cover plates. The support plate is the predominantly load-bearing component of the cooling plate.
[0014] The cooling channel profiling creates recesses on the top and bottom of the support plate, which are covered from above and below by the cover plates, respectively, thus forming cooling channels. The cover plates are bonded to the support plate by a material connection, for example, soldered or welded. The outer cover plates are as thin-walled as possible, while the support plate is preferably thicker and therefore more load-bearing. In this case, the support plate forms the load-bearing structure of the cooling plate. Due to its profiling, the support plate is also particularly rigid. Since the support plate is also bonded to the cover plates over a large area, a hollow profile body with numerous chambers and connection points is created. The sandwich construction of the cooling plate with the highly load-bearing support plate allows for a very flat design and high load-bearing capacity from both sides.
[0015] The temperature control plate has upper temperature control channels located between the upper cover plate and the support plate, and lower temperature control channels located between the lower cover plate and the support plate. The temperature control channels have a trapezoidal cross-section. The temperature control channel profile is, in particular, a series of parallel trapezoidal or channel-shaped indentations extending in opposite directions on the support plate. This means that the support plate is flared in the opposite direction by the temperature control channel profile, so that the profile projects from both the underside and, in particular, the top side of the support plate to the same extent, compared to the initial state of the undeformed, smooth support plate.Adjacent cooling channels can differ in cross-section; in particular, the cross-section of the cooling channels through which the cooling medium flows in is, for thermodynamic reasons, smaller than the cross-section of the cooling channels through which the cooling medium flows out. The cooling channel profile can be manufactured cost-effectively by deep drawing. The trapezoidal shape provides stiffening and, compared to a corrugated shape, ensures a particularly high load-bearing capacity and permissible surface pressure on the cooling plate.
[0016] The upper and lower temperature control channels are fluid-conductingly connected via flow-through openings. These openings serve to redirect the temperature control fluid. Preferably, the temperature control fluid first flows into the lower temperature control channels until it reaches the openings, then flows upwards through the openings towards the upper temperature control channels, and subsequently flows back down in the opposite direction to the flow in the lower temperature control channels.
[0017] Each lower temperature control channel contains at least one through-opening. Multiple through-openings are also possible. The through-openings can vary in size to ensure uniform temperature distribution. For deflection purposes, the through-openings are positioned as far away as possible from the coolant connections through which the coolant is supplied to and discharged from the support plate.
[0018] Preferably, there is only one, and in particular centrally located, inlet for the temperature control fluid, so that the fluid travels different distances to the through-hole in the case of several parallel temperature control channels. Through-holes with different diameters are provided to accommodate varying flow velocities of the temperature control fluid. If more intensive cooling / heating is required, the flow velocity must be high. In this case, the through-holes are larger. Similarly, if the paths traveled by the temperature control fluid are longer than others, resulting in a greater amount of heat being transferred over that distance, the through-hole can be larger. Conversely, the through-hole is smaller if the paths are shorter. The temperature differences within the temperature control plate are reduced by the differently sized through-holes, thus improving cooling / heating efficiency.The battery cells heat up more evenly. The through-holes can also be larger in certain areas to accommodate potential thermal hot spots on the cell layers.
[0019] The cover plates each have a smooth area adjacent to the upper and lower cooling channels, and each of these smooth areas has an edge collar for connection to the support plate. The collar is angled relative to the smooth areas and may additionally have an outward-facing flange for connecting the collar to the cover plate. The collars and the smooth areas of both cover plates are preferably identical in shape. From a manufacturing perspective, it is desirable to use identical forming tools for both cover plates. The collar is produced, in particular, by deep drawing. Only after forming, i.e., after deep drawing, is the edge trimmed, e.g., by punching. Simultaneously with punching or edge trimming, openings for cooling medium connections can also be produced in at least one of the cover plates.The cover plates are therefore predominantly identical parts that can be manufactured cost-effectively.
[0020] The temperature control plate preferably has opposing first and second edge surfaces, each with a reinforcing strip. The reinforcing strip serves to strengthen the temperature control plate, facilitate handling of the entire assembly, and secure the temperature control plate, along with the cell layers attached to it, to or within a battery housing. The battery housing has suitable connection points for the reinforcing strips. The reinforcing strip preferably projects beyond the cell layers. Therefore, the temperature control plate is particularly wider than the cell layers attached to it. This allows the reinforcing strip to project laterally beyond the cell layers.
[0021] The reinforcing strip can serve not only for the external attachment of the temperature control plate to a battery housing, but also, in particular, to reinforce the edge region of the temperature control plate. Preferably, the reinforcing strip is a clamp that overlaps the upper and lower cover plates. The reinforcing strip specifically overlaps an edge-side temperature control channel. This has the advantage that the high bending stiffness of the sandwich construction of the temperature control plate is continued into the reinforcing strip, so that forces acting on the reinforcing strip can be transmitted reliably and with minimal bending stress via the sandwich structure.
[0022] As an alternative to a reinforcing strip, the support plate has a mounting edge projecting from the cover plates on the diametrically opposed and first and second edge sides of the temperature control plate. The first and second edge sides projecting from the cover plates are arranged diametrically. In particular, the edge sides are flat, allowing the support plate to serve as a flat bearing surface. The edge sides also serve for handling the cell planes. The laterally projecting mounting edge can be additionally profiled to increase its bending stiffness. The mounting edge can also have locking lugs to secure the temperature control plate with the batteries attached to it. The mounting edge can also have openings, cutouts, or notches that can be used to secure the temperature control plate together with the batteries mounted within it.
[0023] The temperature control plate according to the invention is characterized in particular by having two opposite smooth sides. The outer cover plates are not profiled in the area intended for temperature control. Outside the area to be temperature controlled, the cover plates may have a profile in the form of a circumferential edge that faces the support plate and serves to, in a sense, fit the cover plate over the temperature control channel profile and creates a contact surface to connect the cover plates to the top or bottom of the support plate. Depending on their orientation, the cover plates have the shape of a very flat hood or a very flat tray.
[0024] In an advantageous embodiment of the invention, the support plate has a wall thickness that is at least 50%, preferably 75% to 150%, greater than the wall thickness of each individual cover plate. In particular, the support plate is twice as thick as the cover plate. If a mounting edge is provided, the wall thickness of the support plate can be reduced because the force transmission to the reinforcement strip preferably occurs via the cover plates. The reinforcement strip, which, as a clamp, preferably has a substantially U-shaped cross-section, can have a leg facing the temperature control plate that, in the installed position, even engages between the cell planes, so that one leg, or even both legs, are partially arranged between the cover plate and the cell plane. This has the advantage that the force transmission from the cell planes to the reinforcement strip is more direct and the structure of the temperature control plate is subjected to less stress.This allows the temperature control plate to be built more easily. The reinforcing strip is bonded to the other components of the temperature control plate using a material-bonded connection.
[0025] The support plate is preferably rectangular. The first and second edges contain the mounting edges of the central support plate or the reinforcing strips. Combinations of mounting edges and reinforcing strips are possible within the scope of the invention.
[0026] On a further edge, the third edge, the support plate preferably has at least one projection for at least one temperature control medium connection. If several of the cell levels are to be arranged one above the other or one behind the other, the temperature control medium connections can be arranged on opposite edge sides. Preferably, both temperature control medium connections, i.e., for the inlet and the outlet, are arranged on the same edge side.
[0027] The temperature control fluid connections are also located on the same cover plate, particularly on the upper cover plate. This design is advantageous from a manufacturing perspective, as the supply and return lines can be mounted from one side. The at least one projection is preferably inclined at an angle of 5 to 45° to the support plate. This creates an inlet ramp. Furthermore, the openings for the temperature control fluid connections point slightly away from the temperature control plate, which simplifies the connection of the supply and return lines. This reduces flow losses of the liquid temperature control fluid.
[0028] If the temperature control fluid both enters and exits at the third edge, the through-openings should preferably be located near the opposite fourth edge. This means that the temperature control channels are preferably oriented so that the temperature control fluid first flows from the third to the fourth edge, is deflected there through the through-openings, and then flows back to the third edge.
[0029] The temperature control medium connections are both preferably arranged in a central region of the third edge. A coolant then preferably flows into those channels that lead directly to the central region of the opposite fourth edge. To avoid excessive cooling due to high coolant velocities in the central region, the passage openings with the smallest diameter are arranged in the central region of the fourth edge, and the passage openings with the larger diameter are arranged adjacent to the first and second edge regions. According to the invention, adjacent passage openings can always have different diameters, so that different flow velocities always occur in adjacent coolant channels, and the heat transfer becomes more uniform when considered over the entire surface.
[0030] In a further development of the invention, it is provided that both temperature control fluid connections, namely the inlet and outlet connections, are arranged close to one another to simplify the assembly of the temperature control plate. Preferably, both temperature control fluid connections are located on the upper cover plate. The support plate has a flow-through opening that is connected to an inlet channel leading to the lower temperature control channels. The temperature control fluid is to be guided from the inlet connection through the flow-through opening of the support plate, so that it is located on the underside of the support plate and is distributed by the inlet channel to all parallel temperature control channels, then flows into the inlet openings, from there into the upper temperature control channels on the top side of the support plate, and finally flows back to the outlet connection in the upper cover plate.The upper cover plate has an outflow channel connected to the upper temperature control channels. To ensure a sufficiently large cross-section in the area of the central temperature control fluid supply and discharge, the support plate can have corrugations in the area of the inflow channel and in the area of the outflow channel, thereby increasing the respective flow cross-section of the inflow channel and / or the outflow channel. These corrugations are flared in opposite directions. One of the corrugations also features the flow opening for the temperature control fluid supply. The support plate forms the supporting central layer for the temperature control fluid connections in the form of a projection. This projection can be angled at an acute angle (5 to 45°) relative to a central plane of the temperature control plate in the temperature control area between the cell planes, thus forming an inflow ramp. This reduces the required deflection of the temperature control fluid and lowers pressure losses.In this case, the upper cover plate and the lower cover plate are also angled.
[0031] The temperature control channels, which preferably have a trapezoidal cross-section, each have walls extending between the upper and lower cover plates. These walls are formed by the support plate. The walls of a temperature control channel form an internal angle with the cover plate that covers the channel. The steeper the walls, i.e., the larger the internal angle, the more difficult it is to produce the flow openings. Therefore, the flow openings are arranged in a wall region where the internal angle is locally reduced. This wall region is thus locally flattened and, in particular, embossed, so that a flow opening can be produced, especially by punching. The flattened wall region, which should have only a slight inclination to the plane of the support plate, is only advantageous where the perforation is to be made.
[0032] The temperature control plate according to the invention is cost-effective to manufacture, particularly when the temperature control channel profile is produced by deep drawing the base material for the support plate. The profile can be designed according to the temperature requirements; that is, larger and smaller temperature control channels are possible, depending on the desired flow velocities in the respective areas of the temperature control plate. The support plate of the temperature control plate has, in particular, a supporting function with regard to upper and lower cell levels that can be connected to the temperature control plate. The inlet ramp reduces flow losses.
[0033] The invention also relates to a battery storage arrangement for mobile or stationary applications, wherein the battery storage arrangement has an upper cell level formed from a plurality of battery cells and a lower cell level formed from a plurality of battery cells, wherein the temperature control plate described above is arranged between the cell levels for temperature control.
[0034] The battery storage arrangement comprises, in particular, a battery housing, wherein the temperature control plate described above has opposing first and second edge faces on which a reinforcing strip is arranged, and / or wherein the support plate described above has a mounting edge. The temperature control plate is attached to or within the battery housing by means of the reinforcing strips and / or the mounting edges.
[0035] The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings. These show Fig. 1 a perspective view of a temperature control plate of a first embodiment with cell planes arranged on it; Fig. 2 the temperature control plate of the Figure 2 without cell levels in a perspective view; Figure 3 a cross-section along line III-III of the Figure 1 through the temperature control plate with the cell planes; Figure 4 an exploded view of the temperature control plate of the Figure 2Figure 5: An illustration of the flow path of an inflowing temperature control fluid within the temperature control plate; Figure 6: An illustration of the flow path of an outflowing temperature control fluid within the temperature control plate; Figure 7: A perspective view of through-openings in the support plate; Figure 8: A detail of the upper cover plate in the area of the temperature control fluid connection; Figure 9: A detail of the support plate in the area of the temperature control fluid connection; Figure 10: A detail of the lower cover plate in the area of the temperature control fluid connection; Figure 11: A perspective view of a temperature control plate in a second embodiment with cell planes arranged on it; Figure 12: A cross-section along line XII-XII of the Figure 11 through the temperature plate with the cell planes; Figure 13 a detail of the Figure 12 Figure 14 shows an exploded view of the temperature control plate of the Figure 11and Figure 15 a perspective view of through openings in the support plate.
[0036] The Figure 1 Figure 1 shows a perspective view of a first embodiment of a temperature control plate 1, which is arranged between an upper cell level 2 and a lower cell level 3. The two cell levels 2, 3 together with the temperature control plate 1 form a battery storage arrangement 41. Each cell level 2, 3 is formed from a plurality of battery cells. Figure 2 The temperature control plate 1 is shown without the two cell levels 2 and 3. A section along line III-III of the Figure 1 is in Figure 3 depicted. The Figure 4 shows an exploded view.
[0037] The rectangular temperature control plate 1 has a three-layer structure comprising a central support plate 4, which is covered by a smooth upper cover plate 5 and an equally smooth lower cover plate 6. The smooth areas 39, 40 are designed for temperature control contact with the cell levels 2, 3. The two cover plates 5, 6 are also rectangular, but slightly smaller than the support plate 4. The temperature control plate 1 has diametrically opposed first and second edge faces 7, 8, with the support plate 4 having mounting edges 9, 10 projecting laterally relative to the narrower cover plates 5, 6. The two mounting edges 9, 10 have several openings 11 through which the temperature control plate 1, together with the cell levels 2, 3, can be fixed. It is possible to fix the temperature control plate 1 with the cell levels 2, 3 to or in a battery housing using the mounting edges 9, 10.The support plate 4 has the supporting function for the entire arrangement consisting of two cell levels 2, 3 and the central temperature control plate 1.
[0038] It should be emphasized that the upper cover plate 5 is smooth, as is the lower cover plate 6. The smooth upper and lower surfaces of the temperature control plate 1 are covered with a heat exchanger, for example, a thin thermally conductive film, to create a connection to a battery mounting surface. In the case of the upper cell level 2, this is the underside of cell level 2, and in the case of the cell level shown in the image plane, it is the lower surface of the cell level 2. Figure 3The lower cell level 3 and the upper surface of cell level 3. The cover plates 5, 6 have the function of connecting cell levels 2, 3 at least thermally to the temperature control plate 1; however, the central support plate 4 primarily fulfills the supporting function of the entire temperature control plate 1. A special feature of the invention is that the support plate 4 simultaneously has a temperature control channel profile 12. Based on the sectional view of the Figure 3 It becomes clear that the temperature control channel profile 12 has a trapezoidal cross-section. All individual temperature control channels 13, 14 formed by this profile have the same cross-section. The upper and lower temperature control channels 13, 14 are created because the temperature control channel profile 12 of the central support plate 4 is covered by the upper and lower cover plates 5, 6. This results in each of the individual temperature control channels 13, 14 having a trapezoidal cross-section. Figure 3Figure 1 shows that the cooling channel profile 12 projects outwards on both sides of the support plate 4. The cooling channel profile 12 extends beyond a top surface 15 and a bottom surface 16 of the support plate 4 by several times the thickness of the support plate 4. In this embodiment, the wall thickness of the cover plates 5, 6 is only half the wall thickness of the support plate 4.
[0039] Based on the sectional view of the Figure 3 It can be seen that the collars 17, 18 of the otherwise smooth cover plates 5, 6 project outwards from the cell planes 2, 3 and are doubly bent. The two cover plates 5, 6 are bonded to the central support plate 4 via the doubly bent collars 17, 18, in particular by soldering or welding.
[0040] The trapezoidal profile of the support plate 4 has a web between adjacent upper and lower cooling channels 13 and 14, respectively, which runs parallel to the smooth upper cover plate 5 and the smooth lower cover plate 6. The support plate 4 is connected to the two cover plates 5 and 6 via these webs. The sandwich construction of this hollow profile body provides high load-bearing capacity. The support plate 4 can, for example, support cell levels 2 and 3, which can weigh 100 kg or more per side. At the same time, the cooling plate 1 is very space-saving and cost-effective to manufacture.
[0041] The Figures 5 and 6 The flow path within the temperature control plate 1 is shown. The temperature control fluid is first introduced into the lower temperature control channels 14 ( Figure 5These are the channels located on the underside 16 of the central support plate 4. Temperature control medium connections 19, 20 for the supply and return are arranged on the upper cover plate 5 ( Figure 2 The temperature control medium connection 19 can also be referred to as an inlet ramp because a projection 21 located at the edge, on which the temperature control medium connections 19, 20 are arranged, is angled away from the central plane of the support plate 4 in a ramp-like manner. As a result, the connection nozzles 22, 23, which are attached to the upper cover plate 5, do not project vertically upwards, but rather obliquely upwards and point away from the cell planes 2, 3. For this purpose, the upper cover plate 5 has connection openings 27, 28 ( Figure 8 ), to which the connecting nozzles 22, 23 are attached. The upper cover plate 5 has two finger-like projections 24, 25 for this purpose, as shown in detail in the Figure 8These two projections 24, 25 contain connection openings 26, 27 for the connection nozzles 22 and 23. Figure 9 This shows that the central projection 21 of the support plate 4 is not divided into two parts, but rather forms the load-bearing connecting element between the finger-like projections 24, 25 of the upper support plate 5. Figure 10 Figure 1 shows that the lower support plate 6 also has two finger-like projections 28, 29. In the assembled position, the one-piece projection 21 serves as a connecting element for all projections 24, 25, 28, 29 of the upper and lower cover plates 5, 6.
[0042] To allow the inflowing temperature control fluid to reach the underside of the support plate 4 from the upper connection opening 26, the projection 21 of the support plate 4 has a connecting opening 30 that is linked to the connection opening 26. Furthermore, the projection 21 of the support plate has oppositely oriented grooves 31, 32 to increase the flow cross-section for the inflowing and outflowing temperature control fluid. The finger-like projections 24, 25 of the upper cover plate 5 and the finger-like projections 28, 29 of the lower cover plate 6 also have grooves to provide the necessary cross-section for the fluid flow. In the assembled position, the three plate components form an inflow channel 33 and an outflow channel 37, as shown in the different sectional views of the Figures 5 and 6 is shown. Figure 5The section through the inlet 19, which serves as the inlet for the cooling medium, shows that the cooling medium flows through the connecting opening 30 of the support plate 4 and is directed into the lower cooling channel 14. The cooling channel 14 extends to a through-opening 34. The cooling medium inlet 19 is located at a third edge 35 of the cooling plate 1. A through-opening 34 in the cooling channel 14 is located adjacent to the opposite fourth edge 36. The through-opening 34 directs the cooling medium into the upper cooling channels 13. The further flow path is shown in Figure 6 as can be seen. It flows there from the fourth edge 36 back towards the third edge 35 and via an outflow channel 37 between the finger-like projection 25 above the groove 32 to the temperature control fluid connection 20, which serves as a drain. From the sectional view of the Figure 5It can be seen that a collection chamber 38 is arranged transversely to the upper and lower temperature control channels 13, 14, into which all upper temperature control channels 14 open, with the collection chamber 38 finally supplying the temperature control medium to the drain channel 37 near the third edge 35.
[0043] The temperature control fluid therefore has different paths within the temperature control plate 1 before it reaches the drain again. For this reason, the through-openings 34 are configured in different sizes. Figure 7Figure 1 shows the flow of the temperature control fluid above and below the central support plate 4. The dashed arrows indicate that the temperature control fluid flows along the underside. All trapezoidal temperature control channels on the underside of the support plate 4 are traversed in the same direction, parallel to each other, from the third edge 35 towards the fourth edge 36 and parallel to the other two edges 7, 8. The temperature control fluid exits the lower temperature control channels 14 through the individual openings 34 and flows into the adjacent temperature control channels 13 located on the upper side of the support plate 4. The flow of the temperature control fluid is then divided between two adjacent upper temperature control channels 13. This is shown by the two solid arrows extending from each of the openings 34.
[0044] The Figure 7This further shows that the through-openings have different diameters. For simplicity, all through-openings 34 are designated with the same reference symbol. Nevertheless, a through-opening 34 adjacent to the first or second edge 7, 8 has a significantly larger diameter than a through-opening 34 in the central area. The through-openings 34 in between have graduated diameters, decreasing towards the center. In this way, a homogenization of the heat dissipation can be achieved. The flow velocities in adjacent temperature control channels 13, 14 are always different. Adjacent through-openings 34 have different diameters.
[0045] The longer the path of the temperature control medium through the temperature control plate 1, the larger the through-opening 34. The shorter or more direct the flow, the smaller the cross-section of the through-opening 34.
[0046] The Figures 11 to 14 A second embodiment is shown, which differs from the first embodiment with regard to the design of the temperature control plate. To avoid repetition, reference is made to the preceding description regarding the explanation of the function. The following discussion focuses primarily on the differences, whereby for essentially functionally identical components, the following points are referred to: Figures 1 to 10 The introduced reference symbols are used.
[0047] The Figure 11Figure 1 shows a battery storage arrangement 41 with two cell levels 2, 3 and a temperature control plate 1, which has reinforcing strips 42, 43 instead of mounting edges. The reinforcing strips 42, 43 are components in the form of clamps with a U-shaped cross-section. The reinforcing strips 42, 43 grip the upper and lower cover plates 5, 6 on their top and bottom sides. The cover plate 4 does not project laterally beyond the collars 17, 18 of the cover plates 5, 6 in the area of the reinforcing strips 42, 43. For this purpose, the cover plates 5, 6 project slightly beyond the cell elements 2, 3, so that the reinforcing strips 42, 43 not only overlap the collars 17, 18, but also a perimeter temperature control channel 44. The reinforcing strips 42, 43 have a back and two upper and lower legs 45, 46 connected to the back, which run parallel to each other and point towards the temperature control plate 1.A lower leg 45 is longer than the upper leg 46. The lower leg 45 engages between the lower cell level 3 and the lower cover plate 6. The shorter upper leg 46 does not engage under the upper cell level 2 and terminates at a distance from the cell level 2. The two legs 45, 46 rest on steps 47, 48 extending along the edge sides of the upper and lower cover plates 4, 5. In the area of the strip-shaped steps 47, 48, the thickness of the temperature control plate 1 is reduced, so that the legs 45, 46 do not project beyond the smooth areas 39, 40 in the thickness direction. Figure 13 The reinforcing strips 42, 43 are therefore no thicker than the temperature control plate 1. The reinforcing strips 42, 43 are an integral part of the temperature control plate 1.
[0048] Another difference is that the temperature control medium connections 19, 20 are arranged at a greater distance from each other. Therefore, the support plate 4 has two separate projections 49, 50. In addition, the Figure 12 , that the cross-sections of the upper and lower temperature control channels 13, 14 are of different sizes. In this case, the cross-section of the lower temperature control channel 14 is larger. The temperature control channels 13, 14 are trapezoidal. The walls 51 enclose an internal angle W1 with the adjacent cover plates 5, 6 ( Figure 13 The walls 51 are locally less steep, i.e., flattened, in the area of the flow openings 34 to make it easier to create the flow openings 34 after shaping the day plate 4. Figure 15 shows that the flow openings 24 are arranged in a wall area 52 of the walls 51 which has a reduced internal angle, i.e. the wall area 52 is flatter and not as steep to the plane of the support plate 4 as the walls 51. Reference symbol:
[0049] 1 - Temperature control plate 2 - Upper cell level 3 - Lower cell level 4 - Support plate 5 - Upper cover plate 6 - Lower cover plate 7 - First edge of 1 8 - Second edge of 1 9 - Mounting edge 10 - Mounting edge 11 - Opening in 9, 10 12 - Temperature control channel profile 13 - Upper temperature control channel 14 - Lower temperature control channel 15 - Top of 4 16 - Bottom of 4 17 - Collar of 5 18 - Collar of 4 19 - Temperature control medium connection (inlet) 20 - Temperature control medium connection (outlet) 21 - Projection at 4 for 1920 22 -Inlet connection 23 -Outlet connection 24 -Finger-like projection at 5 25 -Finger-like projection at 5 26 -Connection opening in 24 27 -Connection opening in 25 28 -Finger-like projection at 6 29 -Finger-like projection at 6 30 -Connection opening in 4 31 -Core 32 -Core 33 -Inlet channel in 28 34 -Flow opening 35 -Third edge of 1 36 -Fourth edge of 1 37 -Outlet channel in 25 39 -Smooth area of 5 40 -Smooth area of 6 41 -Battery storage arrangement 42 -Reinforcing strip 43 -Reinforcing strip 44 -Tempering channel 45 -Floor 46 -Floor 47 -Step 48 -Step 49 -Protrusion 50 -protrusion 51 -wall of 13, 14 52 -wall section , W1 -Inner angle
Claims
1. A temperature-control plate (1), having the following features: 1.
1. a support plate (1) is arranged between a smooth upper cover plate (5) and a smooth lower cover plate (6) and is connected to the two cover plates (5, 6); 1.
2. the support plate (4) is provided with a temperature-control channel profile (12) to form upper and lower temperature-control channels (13, 14) between the support plate (4) and the adjacent cover plates (5, 6), wherein the upper temperature-control channels (13) run between the upper cover plate (5) and the support plate (4) and the lower temperature-control channels (14) run between the lower cover plate (6) and the support plate (4); 1.
3. the support plate (4) has through openings (34) in order to connect the upper and lower temperature-control channels (13, 14) to one another for the temperature-control medium redirection; characterised in that: 1.
4. the through openings (34) have different diameters, depending on the length of the path of the temperature-control medium from a temperature-control medium connection (19) to the through opening (34), wherein the diameter is larger if the path is longer.
2. The temperature-control plate (1) according to claim 1, characterised in that the cover plates (5, 6) each have a smooth area (39, 40) adjacent to the upper and lower temperature-control channels (13, 14) and each have an edge-side collar (17, 18) on the smooth areas (39, 40) for connection to the support plate (4), wherein the collars (17, 18) and the smooth areas (39, 40) are identical in terms of shape.
3. The temperature-control plate (1) according to claim 1 or 2, characterised in that it has opposite first and second edge sides (7, 8), on each of which a reinforcing strip (42, 43) is arranged.
4. The temperature-control plate (1) according to claim 4, characterised in that the reinforcing strip (42, 43) is a clamp which engages over the upper and lower cover plates (5, 6).
5. The temperature-control plate (1) according to claim 3 or 4, characterised in that the reinforcing strip (42, 43) has openings for fastening the temperature-control plate (1) to a housing, in particular to a battery housing.
6. The temperature-control plate (1) according to any one of claims 1 to 5, characterised in that it has opposite first and second edge sides (7, 8), wherein the support plate (4) has a fastening edge (9, 10) that projects relative to the cover plates (5, 6).
7. The temperature-control plate (1) according to claim 6, characterised in that the fastening edge (9, 10) has openings (11) for fastening the temperature-control plate (1), in particular to a battery housing.
8. The temperature-control plate (1) according to any one of claims 1 to 7, characterised in that the support plate (4) is rectangular and has at least one projection (21, 49, 50) on a third edge side (35) for a temperature-control medium connection (19, 20) on one of the cover plates (5).
9. The temperature-control plate (1) according to claim 8, characterised in that the at least one projection (21, 49, 50) is inclined at an angle in a range of 5 to 45° to the support plate (4).
10. The temperature-control plate (1) according to claim 8 or 9, characterised in that the through openings (34) for temperature-control medium deflection are arranged adjacent to a fourth edge side (36) which is opposite the third edge side (35).
11. The temperature-control plate (1) according to any one of claims 1 to 10, characterised in that the temperature-control channels (13, 14) are trapezoidal in cross section and each have walls (51), running between the upper cover plate (5) and the lower cover plate (6), which are formed by the support plate (4), wherein the walls (51) of a temperature-control channel (13, 14) enclose an internal angle (W1) with the cover plate (5, 6) which covers the temperature-control channel (13, 14), wherein the through openings (34) are arranged in a wall region (52) in which the internal angle (W1) is reduced.
12. The temperature-control plate (1) according to any one of claims 4 to 8, characterised in that the temperature-control medium connection (19) for the inlet is arranged on the upper cover plate (5), wherein the support plate (4) has a connection opening (30), which is connected to an inflow channel (33) to the lower temperature-control channels (13) and wherein the temperature-control medium connection (20) for the drain is connected to the upper cover plate (5) and is connected to an outflow channel (37) which is connected to the upper temperature-control channels (13).
13. The temperature-control plate (1) according to claim 12, characterised in that the support plate (4) in the area of the inflow channel (33) and the outflow channel (37) has beads (31, 32) which increase the respective flow cross section.
14. A battery storage arrangement (41), comprising an upper cell level (2), formed from a plurality of battery cells, and a lower cell level (3), formed from a plurality of battery cells, wherein a temperature-control plate (1) with the features according to any one of claims 1 to 13 is arranged between the celllevels (2, 3).
15. The battery storage arrangement (41) according to claim 14, with a battery housing, wherein the temperature-control plate (1) has opposite first and second edge sides (7, 8), on each of which a reinforcing strip (42, 43) is arranged and / or wherein the support plate (4) has a fastening edge (9, 10), wherein the temperature-control plate (1) is fastened to or in the battery housing by means of the reinforcing strips (42, 43) and / or by means of the fastening edges (9, 10).