WO2012138833A2 - Ensemble de refroidissement et procédé de commande - Google Patents

Ensemble de refroidissement et procédé de commande Download PDF

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Publication number
WO2012138833A2
WO2012138833A2 PCT/US2012/032276 US2012032276W WO2012138833A2 WO 2012138833 A2 WO2012138833 A2 WO 2012138833A2 US 2012032276 W US2012032276 W US 2012032276W WO 2012138833 A2 WO2012138833 A2 WO 2012138833A2
Authority
WO
WIPO (PCT)
Prior art keywords
protrusions
cold plate
coolant
flow directing
cooling assembly
Prior art date
Application number
PCT/US2012/032276
Other languages
English (en)
Other versions
WO2012138833A3 (fr
Inventor
Jay Murdock
Original Assignee
A123 Systems, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A123 Systems, Inc. filed Critical A123 Systems, Inc.
Publication of WO2012138833A2 publication Critical patent/WO2012138833A2/fr
Publication of WO2012138833A3 publication Critical patent/WO2012138833A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present description relates to a cooling assembly for a device.
  • Cold plate type heat exchangers may be used to cool a multitude of devices. Cold plates enable heat to be removed from these devices via a low cost and compact assembly when compared to other types of heat exchanges that may be bulkier and more expensive to manufacture. Cold plates are particularly well adapted for use with devices such as batteries due to their geometric configuration.
  • the welds used to couple various components in the cold plate may not be robust.
  • the welds may be comprised of a series of short individual welds dictated by the shape of the cold plate. Consequently, the individual welds may not fully seal coolant pathways allowing coolant to leak out of the cold plate, thereby degrading operation of the cold plate.
  • welds may be ground down to provide increased flow in coolant passage within the cold plate or to provide a planar surface interface for the battery modules, thereby decreasing the integrity of the welds and increasing the likelihood of coolant leaks or rupturing of the cold plate.
  • many cold plates employ a complex coolant channel design which may require a multifaceted manufacturing process, increasing the cost of the cold plate.
  • a cooling assembly for a battery module includes a cold plate including a plurality of protrusions defining a plurality of coolant channels, a first flow directing header coupled to a first end of the cold plate and arranged perpendicular to and spaced away from an end of at least one protrusion, and a second flow directing header coupled to a second end of the cold plate and arranged perpendicular to and spaced away from an end of at least one protrusion.
  • coolant may be routed through channels in the cold plate via a compact design.
  • coolant routing may be performed in the cold plate as opposed to in the flow directing headers, thereby decreasing the likelihood of coolant leaks.
  • a continuous straight mating surface may be maintained between the flow directing headers and the cold plate.
  • the flow directing headers can be coupled to the cold plate via single continuous welds, thereby reducing the possibility of coolant leaks from the cooling assembly.
  • the protrusions may be extruded. It will be appreciated that forming the protrusions via extrusion may be less costly than other manufacturing method such as casting, milling, etc. Specifically, when extruded plates are used, the cost of manufacturing the cooling assembly may be reduced due to the ability of the metal to be extruded at lower temperatures than other manufacturing processes such as casting. In addition, less energy may be required to heat the material so that less energy is expended during manufacturing.
  • the cold plate may include a first set of coolant channels configured to flow coolant in a first direction defined by a first set of protrusions and a second set of coolant channels configured to flow coolant in a second direction define by a second set of protrusions.
  • the first direction and second direction are arranged at 180° with respect to one another. In this way, coolant may travel through the cold plate in a serpentine manner increasing the amount of heat that may be transferred to the coolant, thereby increasing the cooling assembly's efficiency.
  • Fig. 1 shows a schematic depiction of a battery module and cooling assembly coupled thereto, the cooling assembly included in a cooling circuit.
  • FIG. 2 shows an illustration of an example cooling assembly, drawn approximately to scale.
  • Fig. 3 shows a cut-away top view of the cooling assembly shown in Fig. 2.
  • Fig. 4 shows a cross-sectional side view of the cooling assembly shown in Fig. 2.
  • Fig. 5 shows the general path of coolant travel in the cooling assembly shown in Fig. 2.
  • Fig. 6 shows a cross-sectional view of the cooling assembly shown in Fig. 2.
  • Fig. 7 shows a second embodiment of a cooling assembly, drawn approximately to scale.
  • Fig. 8 shows a perspective view of the second embodiment of the cooling assembly, shown in Fig. 7.
  • Fig. 9 shows a method for directing coolant flow in a cold plate.
  • Fig. 10 shows a method for manufacture of a cooling assembly including a cold plate.
  • Fig. 11 shows a bottom view of the cooling assembly shown in Fig. 2.
  • a cooling assembly for a battery module may include a cold plate having a plurality of protrusions defining a plurality of coolant channels.
  • a first and a second flow directing header may be coupled to the cold plate via continuous welds or by another known method.
  • the flow directing headers may be arranged perpendicular to and spaced away from at least a portion of the protrusions. In this way, routing of the coolant may be carried out in the cold plate rather than in the flow directing headers.
  • a more robust weld may be used to couple the flow directing headers to the cold plate.
  • the protrusions may be extruded, thereby decreasing the cost of manufacturing when compared to other methods of manufacture such as casting.
  • FIG. 1 shows a schematic depiction of a cooling system including a battery module and a cooling assembly coupled thereto.
  • Figs. 2-6 show various views of a first embodiment of the cooling assembly shown in Fig. 1.
  • Figs. 7 and 8 show another embodiment of the cooling assembly.
  • Figs. 2-8 are drawn approximately to scale. Additionally, coordinate axes are provided in Figs. 2-8 purely for reference. Therefore, it will be appreciated that the cooling assembly may be positioned in a number of orientations that may or may not be vertically aligned.
  • Fig. 9 shows a method for directing coolant flow in a cooling assembly.
  • Fig. 10 shows a method for manufacture of a cooling assembly.
  • Fig. 11 shows a bottom view of the cooling assembly shown in Fig. 2.
  • Fig. 1 shows a schematic depiction of a cooling system 1 for a battery module 10 or other suitable device configured to generate excess heat.
  • the battery module may include a plurality of flat battery cells.
  • the battery module may include other suitable battery cells, such as cylindrical battery cells.
  • the cooling system may include a cooling circuit 20 and a pump 22 coupled thereto. The pump is configured to provide a pressure head to the cooling system, enabling coolant to flow therethrough. Water or another suitable coolant may be utilized in the cooling system.
  • the cooling circuit may be directed through a cooling assembly 50 coupled to a battery.
  • the cooling assembly includes a cold plate, discussed in greater detail herein with regard to Figs. 2-8.
  • the cooling circuit may further include a heat exchanger 24.
  • the heat exchanger may be configured to dissipate heat in the cooling system.
  • coolant may travel through the cooling assembly in which heat is transferred to the coolant.
  • the coolant may then travel to the heat exchanger in which heat is transferred to the surrounding atmosphere, to another suitable coolant, etc. In this way, excess heat generated in the battery module may be dissipated via the cooling system.
  • Fig. 2 shows an illustration of an example cooling assembly 50.
  • the cooling assembly is configured to flow coolant there through to remove heat form the device to which it is attached.
  • the cooling assembly has at least one outer surface that may be configured to be in face sharing contact with an outer surface of a device, such as a battery module.
  • Various benefits of the cold plate may include the ability to provide large amount of cooling in a compact enclosure, due to the heat transferred to the coolant through the large outer surface, when compared to other types of heat exchangers (e.g., shell and tube heat exchangers).
  • Cooling assembly 50 includes a cold plate 200 having a first flow directing header 202 and a second flow directing header 204 coupled thereto.
  • the flow directing headers may be close-outs.
  • the first and second flow directing headers are coupled to opposing ends of the cold plate. In this way, the first flow directing header is coupled to a first end 220 of the cold plate and the second flow directing header is coupled to a second end 222 of the cold plate.
  • the first and second flow directing headers may be welded to the cold plate. It will be appreciated that the welds may be continuous, reducing the likelihood of coolant leaks from the cold plate.
  • At least one substantially planar surface on the cold plate may be configured to be in face sharing contact with a surface of a device, such as a battery module. Further, in some examples, two substantially planar surfaces may be in face sharing contact with corresponding planar surfaces on the device to which the cooling assembly is coupled. In this way, heat may be transferred from a device to the cooling assembly.
  • an inlet 206 is included in the first flow directing header 202.
  • an outlet 208 is included in the second flow directing header 204.
  • the inlet and outlet may both be included in a single flow directing header, or alternatively, the inlet may be positioned in the second flow directing header and the outlet may be positioned in the first flow directing header.
  • Inlet 206 and outlet 208 may be coupled to the cooling circuit 20, illustrated in Fig. 1, and configured to enable coolant to flow into and out of the cooling assembly. Therefore, the inlet and outlet are fluidly coupled to various coolant passages in the cooling assembly.
  • opening 210 may be provided in each flow directing header to enable the cooling assembly to be attached to battery module 10, shown in Fig. 1, or another suitable device. Although openings are depicted, it will be appreciated that numerous suitable attachment devices may be used to attach the cooling assembly to a device. Moreover, the number and geometry of the attachment device(s) may be selected based on the type of device the cooling assembly is attached to.
  • Fig. 3 shows a top cut-away view of the cooling assembly 50.
  • the cooling assembly includes a plurality of coolant channels 302 defined by a plurality of protrusions 304.
  • Each protrusion included in the plurality of protrusions 304 has a first end 360 and a second end 362.
  • the protrusions are included in a lower portion 306 of cold plate 200.
  • the cold plate may include an upper portion (not shown).
  • the upper portion may seal the cold plate and define the coolant channels.
  • the upper portion, lower portions, and protrusions may be formed via a single extrusion.
  • lower portion and the protrusions may be formed via a single extrusion and the upper portion may separately manufactured and then coupled to the lower portion and the protrusions. It will be appreciated that the upper portion spans the lateral gaps between each protrusion. In this way, each coolant channel may be separated. Additionally, the flow directing headers are oriented in a substantially perpendicular direction to the plurality of protrusions 304. However, in other examples, other orientations are possible. Cutting plane 350 defines the cross-section shown in Fig. 4 and cutting plane 352 defines the cross-section shown in Fig. 6.
  • Fig. 4 shows a cross-sectional side view of a portion of cold plate 200. As shown, each cooling channel is defined by protrusions 304, lower portion 306, and the upper portion 400 of the cold plate.
  • lower portion 306, upper portion 400, and/or protrusions 304 may be extruded. It will be appreciated that it may be inexpensive to utilize extrusion to manufacture at least a portion of the cold plate, when compared to other manufacturing techniques, such as casting. However, in other embodiments, other suitable manufacturing methods may be utilized to create the lower portion, upper portion, and/or protrusions, such as milling or casting. Moreover, at least one suitable material such as aluminum, steel, etc., may be used to construct cold plate 200. A similar material may be used to construct the first flow directing header 202 and the second flow directing header 204, shown in Figs. 2 and 3.
  • the plurality of coolant channels 302 and protrusions 304 are conceptually divided into a number of sets of coolant channels and protrusions.
  • Cold plate 200 includes a first set 308 of protrusions and a corresponding first set 310 of coolant channels, a second set 312 of protrusions and a corresponding second set 314 of coolant channels, and a third set 316 of protrusions and a corresponding third set 318 of coolant channels. It will be appreciated that welds 1100 shown in Fig. 11 traverse the first, second, and third sets of coolant channels and protrusions.
  • welds 1100 may be arranged perpendicular to the first, second, and third sets of protrusions and flow channels.
  • welds 1100 may be arranged perpendicular to the first, second, and third sets of protrusions and flow channels.
  • Fig. 3 although three sets of protrusions and coolant channels are depicted, it will be appreciated that the number of sets of coolant channels and protrusion may be altered in other embodiments.
  • 20 coolant channels are depicted.
  • cold plate 200 may include an alternate number of coolant channels in other embodiments.
  • the number of coolant channels may included in each set of coolant channels may not be equivalent.
  • the number, partitioning, and cross-sectional area perpendicular to the direction of coolant flow in the coolant channels may be selected based on a number of factors such as the cooling requirements of the device to which the cold plate is slated to be attached, the properties of the material(s) used to construct the cold plate, etc. Additionally, the cross-sectional area perpendicular to the direction of coolant flow in the coolant channels may be substantially equivalent in some embodiments or alternatively the cross- sectional area perpendicular to the direction of flow in the coolant channels may vary.
  • the protrusions are spaced away from the first and/or second flow directing headers. Specifically, a portion of the protrusions may be spaced away from both the first and second flow directing headers. In particular, the protrusions may end before reaching the ends of the cold plate. In this way, at least one of the protrusions ends a distance away from the first end 220 of the cold plate, and wherein at least one of the protrusions ends a distance away from the second end 222 of the cold plate. Furthermore, a portion of the protrusions have a length greater than the remaining protrusions.
  • cold plate 200 includes a first extended protrusion 320 abutting the first flow directing header 202 and a second extended protrusion 322 abutting the second flow directing header 204.
  • first extended protrusion 320 may be included in both the first and second sets of protrusions (308 and 312).
  • the second extended protrusion 322 may be included in both the second and third sets of protrusions.
  • extended protrusion 320 forms a side boundary of the first set 310 of coolant channels as well as the second set 314 of coolant channels and extended protrusion 322 forms a side boundary of the second set 314 of coolant channels as well as the third set 318 of coolant channels.
  • the inlet and outlet are in fluidic communication with the first, second, and third sets of protrusions (308, 312, and 316).
  • each laterally successive extended protrusion abuts an opposing flow directing header.
  • the first extend protrusion 320 abuts the first flow directing header 202 and the second extended protrusion 322 abuts the second flow directing header 204. Therefore, in embodiments in which the cold plate includes three or more extended protrusions, the third extend protrusion may abut the first flow directing header, and the fourth extended protrusion may abut the second flow directing header, and so on, and so forth.
  • the extended protrusions (320 and 322) are laterally offset with respect to one another.
  • a serpentine type flow path includes a flow path in which the general direction of coolant flow is altered by at least 90° two or more times.
  • Fig. 5 shows a depiction of the general direction of coolant flow in cooling assembly 50. Arrows are provided to illustrate the general direction of coolant flow within the cooling assembly. However, it will be appreciated that the coolant flow has increased complexity that is not depicted.
  • coolant may enter the cooling assembly via inlet 206. Coolant may then flow from the inlet into a first routing region 510 and into the first set of coolant channels 310.
  • the routing regions may be defined as regions in the cold plate in which the protrusion are spaced away from the flow directing headers. The coolant may then travel into a second routing region 512 and the second set of coolant channels 314.
  • the general direction of flow in the second set of coolant channels is arranged at 180° with respect to the flow of coolant through the first set of coolant channels. In this way, the direction of coolant flow may be reversed.
  • the reversal of coolant flow enable the coolant to longitudinally traverse the cold plate a number of time increasing the amount of heat that may be transferred to the coolant in the cold plate thereby increasing the cold plate's efficiency.
  • the coolant flows from the second set of coolant channels into a third routing region 514 and then into the third set of coolant channels 318. From the third set of coolant channels, the coolant flows into a fourth routing region 516 and into outlet 208.
  • the general direction of flow in the third set of coolant channels is orientated at 180° with respect to the flow in the second set of coolant channels.
  • coolant may be reversed once again directing coolant in a serpentine manner within the cold plate, thereby increasing the amount of heat that may be transferred to the coolant fluid.
  • Fig. 6 shows a cross-sectional side view of cooling assembly 50. Cutting plane 352 shown in Fig. 3 defines the cross-section.
  • the first flow directing header 202 includes a tongue 600 configured to be mated with a groove 602 in cold plate 200. It will be appreciated that the groove may be between the upper portion 400 and lower portion 306 of the cold plate. Moreover, the groove may be devoid of protrusions and laterally extend down at least a portion of the cold plate. In some embodiments, subsequent to extrusion of the cold plate the protrusions in the cold plate may be cut, milled, etc., to form the groove 602. It will be appreciated that the second flow directing header 204, shown in Figs.
  • a tongue similar to tongue 600 may be configured to mate with a groove similar to groove 602 on a longitudinally opposed end of cold plate 200.
  • alternate suitable techniques may be used to couple the cold plate to the flow directing headers.
  • a weld 604 may be used to couple the first flow directing header to the cold plate.
  • a second weld may be used to couple the second flow directing header to the cold plate. As previously discussed the weld may be continuous and extend from one side of the cold plate to the other side of the cold plate.
  • Figs. 7 and 8 show a second embodiment of cooling assembly 50.
  • the second embodiment of cooling assembly 50 shares many common components with the first embodiment of cooling assembly 50 shown in Figs. 2-6. Therefore, similar parts are labeled accordingly.
  • Fig. 7 shows a top cut-away view of the second embodiment of cooling assembly and
  • Fig. 8 shows a perspective view in which a piece of the upper portion of the cold plate is omitted to reveal the flow channels.
  • the first flow directing header 202 includes a plurality of routing extensions (700, 702, and 704). At least one of the routing extensions (702) abuts a protrusion in cold plate 200.
  • the second flow directing header 204 includes a plurality of routing extensions (706, 708, and 710), at least one of the routing extensions (708) abuts another protrusion in the cold plate.
  • the routing extensions may overlap a portion of the cold plate. In this way, a tongue and groove connection may be formed between the flow directing headers and the cold plate, increasing the connection's strength. As shown, all the protrusion may have a substantially equivalent length in cold plate 200. It will be appreciated that the routing extensions in the flow directing headers enables a more robust connection between these components, decreasing the likelihood of leaks from the cooling assembly.
  • Fig. 8 shows a perspective view of the second embodiment of cooling assembly 50. As shown, a piece of upper portion 400 of cold plate 200. Inlet 206 and outlet 208 have been omitted from the drawing. However, it will be appreciated that they are included in cooling assembly 50. A channel 800 in the first flow directing header is illustrated. It will be appreciated that channel 800 may be in fluidic communication with inlet 206 and the first set of coolant channels 310 shown in Fig. 7. Likewise, the second flow directing header 204 may include a similar channel fluidly coupling the outlet to the third set of coolant channels.
  • Fig. 9 shows a method 900 for directing coolant flow in a cooling assembly. It will be appreciated that the systems, assemblies, components, etc., described above may be utilized to implement method 900. However, other suitable systems, assemblies, components, etc., may be used to implement method 900.
  • method 900 includes flowing coolant from an inlet in a first flow directing header into a first set of coolant channels defined by a first set of protrusions in a cold plate.
  • the method includes flowing coolant in a first direction through a first set of coolant channels defined by a first set of protrusions in a cold plate, at least an end of one protrusion included the first set of protrusions spaced away from a first flow directing header and a second flow directing header, the first flow directing header coupled to a first end of the cold plate and the second flow directing header coupled to a second end of the cold plate, the first and second flow directing headers arranged perpendicular to the first set of protrusions.
  • the method includes flowing coolant from the first set of coolant channels into a second set of coolant channels in the cold plate, the second set of coolant channels defined by a second set of protrusions, at least an end of one protrusion included in the second set of protrusions spaced away from the first and second flow directing headers.
  • the method includes flowing coolant through the second set of coolant channels in a second direction.
  • the second direction may be orientated at 180° with respect to the first direction.
  • the method includes flowing coolant from the second set of coolant channels into a third set of coolant channels in the cold plate, the third set of coolant channels defined by a third set of protrusions, at least an end of one protrusion included the third set of protrusions spaced away from the first and second flow directing headers.
  • the method includes flowing coolant through the third set of coolant channels in a direction aligned with the first direction.
  • the method includes flowing coolant from the third set of coolant channels into an outlet included in the second flow directing header.
  • Method 900 enables coolant to travel in a serpentine path through a cold plate, thereby increasing the amount of heat that may be transferred to the coolant and increasing the cooling assembly's efficiency.
  • Fig. 10 shows a method 1000 for manufacture of a cooling assembly including a cold plate having two flow directing headers coupled thereto. It will be appreciated that method 1000 may be used to construct the cooling assembly described above or alternatively may be used to construct another suitable cooling assembly.
  • method 1000 includes extruding at least a portion of a cold plate including a plurality of protrusions.
  • the method includes cutting one or more protrusions to create at least one routing region. It will be appreciated that a section of each of the one or more protrusion may be cut at 1004.
  • a routing region may be a region in the cold plate that does not include protrusions.
  • all of the protrusions in the cold plate may be cut to reduce the protrusion's length at both ends of the protrusion.
  • the method may further include cutting a plurality of the protrusions to form two grooves in the cold plate.
  • the method includes milling an inlet into a first flow directing header.
  • the method includes milling an outlet into a second flow directing header.
  • alternate techniques may be used to construct the inlet and outlet in the first and second flow directing headers.
  • method 1000 may include cutting or machining one or more routing extensions in at least one of the first and second flow directing headers.
  • mounting holes may also be milled into the first and/or second flow directing headers.
  • the method includes coupling the first flow directing header to the cold plate.
  • coupling the first flow directing header to the cold plate may include inserting a tongue in the first flow directing header into a groove in the cold plate and/or welding or brazing the cold plate to the first flow directing header.
  • the method includes coupling a second flow directing header to the cold plate.
  • coupling the second flow directing header to the cold plate may include inserting a tongue in the second flow directing header into a groove in the cold plate and/or welding or brazing the cold plate to the second flow directing header. It will be appreciated that the welds coupling the first and second flow directing headers to the cold plate may be continuous, reducing the likelihood of coolant leaks from the cold plate.
  • method 1000 may be implemented at a lower cost when compared to other methods that may be used to manufacture the cooling assembly, such as casting. Moreover, it will be appreciated that the weld coupling the flow directing headers and the cold plate may not require any additional tooling after the materials are welded due to the fact that the flow directing header do not include any regions for routing coolant from one set of coolant channels to another. In this way, the likelihood of coolant leaks developing from additional tooling may be decreased.
  • the methods of Figs. 9 and 10 provide for directing coolant flow in a cooling assembly, the method comprising: flowing coolant in a first direction through a first set of coolant channels defined by a first set of protrusions in a cold plate, at least an end of one protrusion included in the first set of protrusions spaced away from a first flow directing header and a second flow directing header, the first flow directing header coupled to a first end of the cold plate and the second flow directing header coupled to a second end of the cold plate, the first and second flow directing headers arranged perpendicular to the first set of protrusions; flowing coolant from the first set of coolant channels into a second set of coolant channels in the cold plate, the second set of coolant channels defined by a second set of protrusions, at least an end of one protrusion included in the second set of protrusions spaced away from the first and second flow directing headers; and flowing coolant through the second set of coolant channels
  • the methods of Figs. 9 and 10 also include where the first and second set of protrusions are extruded and wherein at least one of the first set of protrusions ends a distance away from the first end of the cold plate, and wherein at least one of the second set of protrusions ends a distance away from the second end of the cold plate.
  • the method includes where one or more of the protrusions in at least one of the first and second sets of protrusions has a greater length than the remaining protrusions included in the corresponding set of protrusions.
  • the method includes where at least one of the first and second flow directing headers includes at least one routing extension overlapping a portion of the cold plate and abutting a protrusion.
  • Fig. 11 shows a bottom view of cooling assembly 50.
  • Continuous welds 1100 coupling the flow directing headers (202 and 204) to cold plate 200 may extend from a first side 1102 of the cold plate to a second side 1104 of the cold plate.
  • the likelihood of coolant leaks from the cold plate may be reduced when compared to other cooling assemblies that may use spot welding to couple the flow directing headers to the cold plate or may manipulate the welds (e.g., grind down) after welding is completed.
  • the cooling assembly may include additional continuous welds.
  • the additional welds may extend from the first side 1102 of the cold plate to the second side 1104 of the cold plate on the top of the cooling assembly. Additionally or alternatively, a seal may extend from the first side of the cold plate to the second side of the cold plate between the cold plate and the first and second flow directing headers. In this way, the likelihood of coolant leaks from the cooling assembly may be reduced.
  • the apparatus of Figs. 1-8 and 11 provides for a cooling assembly for a battery module comprising: a cold plate including a plurality of protrusions defining a plurality of coolant channels; a first flow directing header coupled to a first end of the cold plate and arranged perpendicular to and spaced a distance away from an end of at least one protrusion; and a second flow directing header coupled to a second end of the cold plate and arranged perpendicular to and spaced a distance away from an end of at least one protrusion.
  • coolant can be directed through a battery pack to improve battery cell cooling.
  • the apparatus of Figs. 1-8 and 11 also includes the cooling assembly where the plurality of protrusions are extruded and wherein at least one of the plurality of protrusions ends a distance away from the first end of the cold plate, and wherein at least one of the plurality of protrusions ends a distance away from the second end of the cold plate.
  • the cooling assembly also includes where the cold plate includes a first set of coolant channels configured to flow coolant in a first direction parallel to or defined by a first set of protrusions and a second set of coolant channels configured to flow coolant in a second direction parallel to or defined by a second set of protrusions.
  • the cooling assembly includes where the first direction and second direction are arranged at 180° with respect to one another.
  • the cooling assembly includes where at least one of the first and second flow directing headers includes an inlet in fluidic communication with the first set of coolant channels and in closer proximity to the first set of coolant channels than the second set of coolant channels.
  • the cooling assembly also includes where at least one of the first and second flow directing headers includes an outlet in fluidic communication with the second set of coolant channels and in closer proximity to the second set of coolant channels than the first set of coolant channels.
  • the cooling assembly includes where at least one of the plurality of protrusions has a greater length than other protrusions and where the at least one of the plurality of protrusions forms a side boundary of the first set of coolant channels.
  • the cooling assembly includes where the at least one protrusion having a greater length abuts at least one of the first and second flow directing headers.
  • the cooling assembly includes where two or more of the plurality of protrusions have a greater length than the other protrusions, and where the two or more protrusions having a greater length are offset from each other so as to direct coolant flow in a serpentine fashion.
  • the cooling assembly also includes where the first flow directing header includes at least one routing extension overlapping a portion of the cold plate and abutting a protrusion.
  • the cooling assembly includes where the first and second flow directing headers are coupled to the cold plate via a tongue and groove connection.
  • the cooling assembly includes where the cold plate includes at least one substantially planar surface configured to be in face sharing contact with a surface of a battery module and wherein the first flow directing header and the second flow directing header are coupled to the cold plates via continuous welds.
  • the apparatus of Figs. 1-8 and 11 also includes a cooling assembly for a battery module comprising: a cold plate including a lower portion having a plurality of extruded protrusions defining a plurality of coolant channels, the cold plate includes a first set of coolant channels configured to flow coolant in a first direction and a second set of coolant channels configured to flow coolant in a second direction, the first direction and second direction arranged at 180° with respect to one another, at least one of the extruded protrusions defining the first set of coolant channels ending a distance away from a first end of the cold plate, at least one of the extruded protrusions defining the second set of coolant channels ending a distance away from a second end of the cold plate; a first flow directing header coupled to the first end of the cold plate and arranged perpendicular to the plurality of extruded protrusions; and a second flow directing header coupled to the second end of the cold plate and arranged perpen
  • the cooling assembly includes where at least one of the plurality of extruded protrusions has a length greater than a length of the other extruded protrusions.
  • the method includes where one or more protrusions in the first and second sets of protrusions have a greater length than other protrusions included in the first and second sets of protrusions.
  • the cooling assembly includes where the at least one of the plurality of extruded protrusions abuts at least one of the first and second flow directing headers.
  • the cooling assembly includes where the first flow directing header includes at least one routing extension overlapping a portion of the cold plate and abutting an extruded protrusion.
  • the cooling assembly includes where at least one of the first and second flow directing headers includes an inlet in fluidic communication with the first set of coolant channels and at least one of the first and second flow directing headers includes an outlet in fluidic communication with the second set of coolant channels, and wherein the first and second flow directing headers are coupled to the cold plate via continuous welds.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention porte sur un ensemble de refroidissement pour un module de batterie. Dans un exemple, l'ensemble de refroidissement comprend une plaque froide comprenant une pluralité de saillies définissant une pluralité de canaux d'agent de refroidissement, une première canalisation d'orientation d'écoulement couplée à la plaque froide et agencée perpendiculairement à une extrémité d'au moins une saillie et espacée de celle-ci, et une seconde canalisation d'orientation d'écoulement couplée à la plaque froide et agencée perpendiculairement à une extrémité d'au moins une saillie et espacée de celle-ci.
PCT/US2012/032276 2011-04-05 2012-04-05 Ensemble de refroidissement et procédé de commande WO2012138833A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161472012P 2011-04-05 2011-04-05
US61/472,012 2011-04-05

Publications (2)

Publication Number Publication Date
WO2012138833A2 true WO2012138833A2 (fr) 2012-10-11
WO2012138833A3 WO2012138833A3 (fr) 2012-11-29

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9622377B2 (en) 2015-03-13 2017-04-11 Lear Corporation Cold plate having separable flow directing baffle
CN106981703A (zh) * 2015-10-14 2017-07-25 三星Sdi株式会社 冷却板及其制造方法、电池模块及车辆
EP3333966A4 (fr) * 2015-08-05 2019-03-27 Nikkei Heat Exchanger Company, Ltd. Refroidisseur
WO2020046431A3 (fr) * 2018-05-03 2020-05-07 Lawrence Livermore National Security, Llc Système et procédé de contrôle de température compact pour modules d'énergie
CN111121501A (zh) * 2018-10-31 2020-05-08 浙江三花汽车零部件有限公司 一种换热装置
CN111864310A (zh) * 2020-08-31 2020-10-30 远景动力技术(江苏)有限公司 电池包及其冷板
EP3765808A4 (fr) * 2018-03-16 2022-05-04 Romeo Systems, Inc. Lame de plaque froide pour modules de batterie

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US6230791B1 (en) * 1999-08-30 2001-05-15 Electric Boat Corporation Heat transfer cold plate arrangement
US20040197633A1 (en) * 2000-03-07 2004-10-07 Masao Yamamoto Polymer electrolyte fuel cell and method of manufacturing the same
JP2006266350A (ja) * 2005-03-23 2006-10-05 Japan Steel Works Ltd:The 水素貯蔵容器およびその製造方法
US7261960B2 (en) * 2003-05-16 2007-08-28 General Motors Corporation Apparatus and method for internal stack temperature control
US20100028742A1 (en) * 2006-10-16 2010-02-04 Hyundai Hysco Metal separator for fuel cell and fuel cell stack having the same

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US6230791B1 (en) * 1999-08-30 2001-05-15 Electric Boat Corporation Heat transfer cold plate arrangement
US20040197633A1 (en) * 2000-03-07 2004-10-07 Masao Yamamoto Polymer electrolyte fuel cell and method of manufacturing the same
US7261960B2 (en) * 2003-05-16 2007-08-28 General Motors Corporation Apparatus and method for internal stack temperature control
JP2006266350A (ja) * 2005-03-23 2006-10-05 Japan Steel Works Ltd:The 水素貯蔵容器およびその製造方法
US20100028742A1 (en) * 2006-10-16 2010-02-04 Hyundai Hysco Metal separator for fuel cell and fuel cell stack having the same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9622377B2 (en) 2015-03-13 2017-04-11 Lear Corporation Cold plate having separable flow directing baffle
EP3333966A4 (fr) * 2015-08-05 2019-03-27 Nikkei Heat Exchanger Company, Ltd. Refroidisseur
EP3595080A1 (fr) * 2015-08-05 2020-01-15 Nikkei Heat Exchanger Company, Ltd. Refroidisseur
US10648748B2 (en) 2015-08-05 2020-05-12 Nikkei Heat Exchanger Company, Ltd. Cooler
CN106981703A (zh) * 2015-10-14 2017-07-25 三星Sdi株式会社 冷却板及其制造方法、电池模块及车辆
EP3765808A4 (fr) * 2018-03-16 2022-05-04 Romeo Systems, Inc. Lame de plaque froide pour modules de batterie
US11557800B2 (en) 2018-03-16 2023-01-17 Romeo Systems Technology, Llc Cold plate blade for battery modules
WO2020046431A3 (fr) * 2018-05-03 2020-05-07 Lawrence Livermore National Security, Llc Système et procédé de contrôle de température compact pour modules d'énergie
CN111121501A (zh) * 2018-10-31 2020-05-08 浙江三花汽车零部件有限公司 一种换热装置
CN111121501B (zh) * 2018-10-31 2022-11-04 浙江三花汽车零部件有限公司 一种换热装置
CN111864310A (zh) * 2020-08-31 2020-10-30 远景动力技术(江苏)有限公司 电池包及其冷板

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