SE545205C2 - A liquid cooled module with a restricting member - Google Patents

A liquid cooled module with a restricting member

Info

Publication number
SE545205C2
SE545205C2 SE2150581A SE2150581A SE545205C2 SE 545205 C2 SE545205 C2 SE 545205C2 SE 2150581 A SE2150581 A SE 2150581A SE 2150581 A SE2150581 A SE 2150581A SE 545205 C2 SE545205 C2 SE 545205C2
Authority
SE
Sweden
Prior art keywords
fluid
liquid cooled
cooled module
module according
distributor plate
Prior art date
Application number
SE2150581A
Other languages
Swedish (sv)
Other versions
SE2150581A1 (en
Inventor
Are Björneklett
Elisabeth Söderlund
Patrik Lundin
Peter Nilsson
Robert Thorslund
Original Assignee
Apr Tech Ab
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 Apr Tech Ab filed Critical Apr Tech Ab
Priority to SE2150581A priority Critical patent/SE545205C2/en
Priority to EP22725574.2A priority patent/EP4334995A1/en
Priority to CN202280033265.4A priority patent/CN117616619A/en
Priority to MX2023012939A priority patent/MX2023012939A/en
Priority to JP2023568279A priority patent/JP2024517862A/en
Priority to KR1020237037925A priority patent/KR20240006533A/en
Priority to US18/558,760 priority patent/US20240234871A1/en
Priority to PCT/SE2022/050435 priority patent/WO2022235192A1/en
Publication of SE2150581A1 publication Critical patent/SE2150581A1/en
Publication of SE545205C2 publication Critical patent/SE545205C2/en

Links

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
    • H01M10/65—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
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20236—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures by immersion
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Secondary Cells (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Described is among otherthings a liquid cooled module (1). The liquid cooled module provides improved heat dissipation and improved flow in the liquid cooled module (1). In the module a plurality of heat generating components (11) are arranged so that spaces (12) for housing a moving fluid are formed around the heat generating components, and a liquid sealed casing (2) encloses the heat generating components (11), wherein at least one restricting member (14, 17,160) is located in the flow path of the moving fluid.

Description

Technical field The present invention relates to a liquid cooled module comprising a housing, a plurality of heat generating components arranged in the housing, and a liquid for thermal management of the heat generating components.
Background There is an increased use of heat generating devices such as electric components and rechargeable batteries. Applications include for example, energy storage, energy transformation to powering electric equipment and vehicles or as a power back up in stationary applications. During operation, the heat generating components generate heat which needs to be dissipated effectively to allow safe functioning of the components and prevent failure of the module in which such heat generating components are housed. The performance of the heat generating component is to a large extent limited by the available thermal management techniques for keeping the component within an appropriate tempeFatUFe Fafige. ln for example battery applications, it is known to have thermal management systems employed within the battery module to control the operational temperature of the battery cells within an optimal temperature range. lncreased energy storage capacity and reduced charging times have led to a strive for more efficient thermal management in general, and dissipation of generated heat in particular. One commonly employed thermal management method is known as immersion cooling, which also referred to as liquid submersion cooling. This is the practice of submerging components, such as e.g., battery cells, in a thermally conductive liquid. Thus, the heat may be transferred directly from the heat source, e.g., battery cell, electronics, printed circuit board, to the working fluid and dissipated through a heat exchanger located elsewhere.
With the ever-increasing performance requirements regarding storage capacity and strive for more space efficient systems, there is a need for improved and more efficient thermal management techniques.
US2020266506 discloses a battery module including a housing and a plurality of battery cells arranged in a battery stack received within the housing. The battery cells are rectangular and has two parallel main surfaces. The battery modules in the stack are arranged so that the main surfaces of neighboring cells in the stack is in close contact with each other. The battery module further includes an inner cover disposed between the housing and the plurality of battery cells. The inner cover includes a top surface facing the housing and a bottom surface facing the plurality of battery cells. The inner cover also includes a plurality of fluid channels defined on the bottom surface and extending along a length of the inner cover. Each of the plurality of fluid channels is configured to receive a fluid, such as a thermal management liquid. The fluid channels lead the fluid from one side of the battery cell to the opposite side of battery cell in a direction perpendicular to the main surfaces ofthe battery cells and by that improve the circulation of the fluid within the battery module. The inner cover is also provided with openings disposed above the battery cells for letting out gases generated by the battery cells.
US4522898 discloses a battery with a housing containing a plurality of battery cell as well as a cooling medium. The battery cells are cylindrical and arranged adjacent to each other with their longitudinal axes in parallel so that elongated spaces for housing the cooling medium are formed between the battery cells. The battery comprises a distributor plate provided in the interior of the housing for feeding and distributing the cooling medium to the battery cells. The distributor plate is provided with openings through which the cooling medium can be fed to the spaces between the battery cells. The distributor plate is disposed either above the upper ends of the battery cells or below the lower ends of the battery cells. The cooling medium is inlet to an open space above the battery cells. The cooling medium flows through the openings in the distributor plate and in the elongated spaces between the battery cells. This battery is mainly intended with air as a medium.
There is a constant desire to improve the thermal management of liquid cooled modules and to thereby increase the performance of the heat generating components housed inside the module. Hence there is a need for an improved liquid cooled module.
Summary lt is an aim of the present invention to at least partly overcome the above problems, and to provide an improved thermal management ofa liquid cooled module.
This aim is achieved by a liquid cooled module in accordance with the appended claims.
Brief description of the drawings The invention will now be explained more closely by the description of different embodiments of the invention and with reference to the appended figures.
Fig. 1 shows an example of battery module in a perspective view.
Fig. 2a shows a perspective view of an example of a stack of battery cells.
Fig. 2b shows the stack of battery cells in figure 2a from above.
Fig. 3 shows an example of a liquid cooled module in the form of a battery module in an exploded view.
Fig. 4 shows an example of a distributor plate.
Fig. 5a-c show examples of a manifold structures including channels for distributing a fluid in views from below.
Fig. 6 shows an example of a battery module including the manifold structure shown in figure 5a.
Fig. 7 shows another example of a battery module including any of the manifold structure shown in figures 5b and 5c.
Fig. 8 shows the battery module in figure 7 from above.
Fig. 9 shows yet another example of a battery module in an exploded view.
Fig. 10 shows an example of a a cell holder for holding the battery cells.
Fig. 11 shows an example of an electrical conductors connected to the battery cells.
Figs. 12 and 13 illustrate a restricting member.
Fig. 14 illustrates a pump inside the casing of a liquid cooled module Fig. 15 illustrates a heat sink member.
Fig. 16 is a top cross-sectional view of a liquid cooled module.
Figs. 17 - 19 illustrate different air bubble trap arrangements.
Detailed description Aspects of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. ln the following description a liquid cooled module with heat generating components is described. The heat generating components are in some of the exemplary embodiments set out to be battery cells. However, the heat generating components can be other types of heat generating components such as motors, electrical components, micro-processors, printed circuit boards etc. Further it is appreciated that different aspects ofthermal management are described herein. lt is to be understood that the different aspects can be used one by one, but also, preferably, in different combinations so as to achieve a good thermal management for the application at hand. Thus, even ifsome aspects are described in combination, the aspects can be applied without being combined. Likewise, aspects from different examples can be combined to improve the thermal management. Like numbers in the drawings refer to like elements throughout.
Figure 1 shows an example of a liquid cooled module 1. The liquid cooled module in the example of Figure 1 is a battery module 1 in a perspective view. A battery may include one or more battery modules electrically and fluidically connected to each other. The battery modules can be electrically connected to each other in series or in pa rallel. The battery module 1 can be used for storing and supplying electrical power to any electrical system, such as an electric vehicle, an industrial electrical system, and a stationary energy storage system. For explanatory purposes, a single battery module 1 will be explained in detail in the description provided below.
The battery module comprises a casing 2 enclosing a stack of heat generating components 5. ln this example all of the heat generating components are battery cells 5. However, it is also envisaged that some or all of the heat generating components 5 could be other types of heat generating components 5. Also, not all components in the stack of heat generating components need to be heat generating, but could be of other types. ln the illustrated embodiment, the casing 2 has a substantially hollow, and rectangular configuration. The casing 2 defines a first end 2a and a second end 2b disposed opposite the first end 2a. The casing 2 may have other configurations depending on application requirements. The casing also defines a length extending between the first end 2a and the second end 2b. The casing comprises a plurality of walls 3a-f, such as a first wall 3a, a second wall 3b disposed opposite the first wall 3a, a first end wall 3c disposed at the first end 2a of the housing 2, a second end wall 3d disposed at the second end 2b of the housing, and a front wall 3e, and a rear wall 3f. The first and second walls 3a-b are arranged in parallel and extends between the end walls 3c-d. The first wall 3a can, for example, be a lid of the casing, and the other walls defines a box-like bottom part of the casing 2. ln such case, the first wall 3a can be removably attached to the bottom part of the casing or to an end wall thereof. The casing 2 can be made of any suitable material, such as a polymer, a metal for example Aluminum an alloy (such as an Aluminum-alloy), and the like. The casing 2 is sealed to hold a fluid inside the casing. ln the exemplary embodiment of Figure 1, the casing 2 comprises at least one a fluid entrance 8 and at least one a fluid outlet 9. The fluid entrance 8 is an opening in the casing adapted to receive a flow of fluid into the housing 2. The fluid entrance 8 can be connected to an inlet port for the fluid. The fluid entrance is positioned between the first wall and the top level of battery cells. The casing can be provided with more than one fluid entrance 8 and more than one fluid outlet 9. The fluid outlet 9 is an opening in the casing 2 to allow the fluid to leave the casing 2. The fluid outlet 9 can be connected to an outlet port for the fluid. The fluid outlet is positioned between the second wall and the bottom level of battery cells. The fluid entrance and outlet can be switched, so that is the liquid is entering between the second wall and the bottom level of battery cells and leaving between the first wall and the top level of battery cells. The fluid may be any thermal management fluid, such as a dielectric liquid, a gas, or a combination of a liquid and a gas. ln the illustrated embodiment, the fluid entrance 8 and the fluid outlet 9 are disposed in the front wall 3e. However, the fluid entrance 8 and the fluidoutlet 9 can be arranged in any of the walls 3a-e, such as in the first wall 3a and the second wall 3b respectively, or in the first and second end walls 3c-d respectively. The fluid outlet 9 is disposed spaced apart from the fluid entrance 8. ln alternative embodiments, the casing can have more than one fluid entrance 8 and more than one the fluid outlet 9 so that a plurality of battery cells can be fluidly connected to each other. The casing is also provided with two or more electric ports 10 to allow the battery module to be electrically connected to an external circuit and/or to other battery modules. ln accordance with an alternative embodiment, no fluid entrance/inlet or outlet is provided. ln such an embodiment liquid can be pumped inside the casing and heat can be dissipated via the casing Figure 2a shows a perspective view of an example of a stack 5 of components, in this example battery cells 11. With a stack 5 is meant a plurality of components arranged in a defined configuration. ln the illustrated example, the components, here battery cells, are arranged in a hexagonal configuration. This configuration can for example be used for hexagonal battery cells. However, the components battery cells can be arranged in other configurations, such as a square configuration. This configuration can for example be used for prismatic battery cells. Figure 2b shows the stack 5 of battery cells in figure 2a from above. The battery cells 11 are arranged so that spaces 12 for housing a fluid are formed between the battery cells 11. These spaces 12 form smooth fluid volumes without inflicting structures in the way for the fluid. The spaces 12 are typically formed between envelop surfaces of the battery cells. The spaces 12 then form elongated and parallel volumes between the battery cells, without inflicting structures in the way for the liquid/fluid used to cool the battery cells. The volumes can be seen as channels running in an axial direction from one side of the battery cells to the other side ofthe battery cells. The liquid /fluid used to cool the battery cells can be supplied to the spaces from a direction parallel to the orientation of the spaces 12. Thus, when the cooling fluid/liquid is supplied into the spaces 12, the feed of cooling liquid/fluid is in a direction parallel to the spaces. ln Fig. 2a the liquid /fluid can be fed from above down into the elongated spaces 12 as will be described in more detail later. ln the illustrated embodiment, the battery cells 11 are cylindrical. Each of the battery cells 11 have an axis of symmetry, an envelope surface facing the spaces 12, and upper and lower ends. ln the illustrated embodiment, the battery cells 11 are elongated and the longitudinal axes ofthe battery cells coincides with the axes of symmetry. The battery cells 11 are arranged with their axis of symmetry in parallel. The spaces 12 form elongated and parallel channels between the battery cells, without disturbing structures. ln alternative embodiments, the battery cells can have other shapes, such as rectangular, e. g. prismatic cells. The battery cells can be arranged in close vicinity to each other, or at a distance from each other so that the spaces 12 surround the battery cells. The spaces 12 form elongated and parallel volumes between the battery cells, without disturbing structures. ln one aspect, the battery cells 11 are arranged perpendicular to the first and second walls 3a-b. Also, the number or battery cells 11 shownin the accompanying figure is merely exemplary and may vary based on application requirements. Thus, the cooling liquid /fluid can run freely along the sides of the battery cells 11 in the spaces 12 without any obstructing element in the way. The flow can also be in the opposite direction. For example, the flow can be from the bottom up. Thus, a flow in the axial direction of the battery cells 12 is achieved where the flow is unobstructed. ln yet another embodiment the battery cells are located on both sides of the inlet/outlet of the cooling liquid /fluid. For example, one or two layers of battery cells can be located above the inlet/outlet of the cooling liquid /fluid and one or two layers of battery cells can be located below the inlet/outlet of the cooling liquid /fluid. ln other embodiments further layers can be arranged, but the cooling efficiency will decrease the more battery cells the cooling liquid /fluid needs to cool before being cooled itself.
The battery cell 11 also includes one or more electric terminals to allow the battery cells to be electrically connected to each other. For example, the electric terminals are disposed at the upper ends of the battery cells. ln the illustrated example, every second of the battery cells is turned upside down so that the some of the electrical terminals points downwards and some of the electrical terminals points upwards. This facilitates the electrical connection of the battery cells. The battery cells 11 may be any electrochemical cell, such as a Lithium-lon type electrochemical cell, a Lithium-Polymer type electrochemical cell, solid state batteries, and the like. ln an alternative embodiment, the battery module may include two or more layers of battery cells.
Figure 3 shows an example of a battery module 1 according to an embodiment in an exploded view. The battery module 1 comprises a stack 5 including a plurality of cylindrical battery cells 11 arranged adjacent each other so that spaces 12 for housing a fluid is formed between the battery cells. The battery module 1 further comprises a distributor plate 14 provided with a plurality of openings 15 spaced apart from each other for distributing the fluid to the spaces 12 between the battery cells 11, and a manifold structure 17 comprising a plurality of fluid channels 18 arranged to guide the fluid between the at least one fluid entrance 8 in the casing 2 and the openings 15 in the distributor plate. The distributor plate 14 can to improve the flow path of the fluid moving in the liquid cooled module. Also, the manifold structure 17 can act as a restricting member to improve the flow path of the fluid moving in the liquid cooled module. The openings 15 in the distributor plate 14 are arranged to place the openings above or below regions in which the spaces 12 between the battery cells are located. The manifold structure 17 is arranged between the at least one fluid entrance 8 of the casing and the distributor plate 14. ln one aspect of the invention, the manifold structure 17 is integrated into the first wall 3a. ln another aspect, the manifold structure 17 is attached to the first wall 3a. Each of the fluid channels 18 in the manifold structure 17 is in fluid communication with the one or more fluid entrances 8 ofthe casing 2. The openings 15 in the distributor plate are in fluid communication with the at least one fluid entrance 8 via the fluid channels 18. When fluid/ liquid flows in the spaces 12, the cells can be arranged so that the flow only cools one layer of cells and not multiple serially arranged cells. For example, one layer of battery cells11 can be arranged above the inflow of fluid/liquid and one layer of battery cells can be arranged below the inflow of fluid/liquid. Hereby, the fluid will only flow a distance of about the axial length of the battery cells before being cooled. ln this way all battery cells will be cooled equally.
The distributor plate 14 defines a plane arranged perpendicular to axes the battery cells 11. The distributor plate 14 is disposed either above the upper ends of the battery cells 11 and/or below the lower ends of the battery cells. Thus, the openings 15 in the distributor plate are either above and/or below the spaces between the battery cells so that the fluid will flow in parallel with the envelop surfaces ofthe battery cell in the axial directions of the battery cells 11. The positions of the plurality of openings 15 in the distributor plate 14 correspond to positions of the spaces 12. The openings 15 in the distributor plate 14 are preferably aligned with the spaces 12 between the battery cells so that the fluid enters the spaces 12 between the battery cells 11 and flows along the surfaces of the battery cells. There may also be openings aligned above the battery cell poles. ln one aspect, the manifold structure 17 comprises a plate shaped body, and the fluid channels 18 are formed in the plate shaped body. The manifold structure 17 then defines a plane perpendicular to the axes of the battery cells 11, and the plurality of fluid channels 18 are arranged so that they extend in the plane defined by the manifold structure. The manifold structure 17 can be made of any suitable material, such as a polymer, a metal, an alloy, and the like. Preferably, the manifold structure 17 is made of materials such as EPDM, Neoprene, Polyamide. The manifold structure 17 can be made by Injection molding, extrusion, 3D- iExtrusion® technology, milling, stamping, water cutting or laser cutting or a similar manufacturing process. The manifold structure 17 has a bottom surface 19 facing the distributor plate 14. The distributor plate 14 and the manifold structure 17 are arranged substantially parallel with the first and second walls 3a-b of the casing. The distributor plate 14 and the manifold structure 17 can be arranged above the upper ends of the battery cells 11, and/or below the lower ends of the battery cells The distributor plate 14 is disposed between the manifold structure 17 and the stack 5 of battery cells 11. ln one aspect, the distributor plate 14 is attached to the manifold structure 17. ln another aspect, the distributor plate can be integrated into the manifold structure. ln another aspect the distributor plate is combined with an electrical connector. ln one aspect, a cell holder can be arranged between the stack of battery cells and the distributor plate.
The casing 2 encloses the stack 5 of battery cells 11 and the distributor plate 14. The manifold structure 17 can be integrated in one of the first and second walls 3a-b of the casing 2. The manifold structure 17 can be integrated into a lid of the casing. The lid can, for example, be the first wall 3a. Alternatively, the manifold structure 17 can be disposed between one of the first and second walls 3a-b and the distributor plate 14. ln such case, the manifold structure17 has an upper surface facing the wall 3a-b of the casing, and the manifold structure 17 can be attached to one of the first and second walls 3a-b.
Figure 4 shows an example of a distributor plate 14 including a plurality of openings 15. The openings 15 in the distributor plate are arranged above and below the spaces 12 so that the flow of fluid is guided towards the spaces 12 between the battery cells. Thus, the position of the openings depends on the configuration of the battery cells. Preferably, the openings 15 are substantially evenly spread over the distributor plate. Thus, the fluid can be evenly distributed between the battery cells. The number of openings 15 may vary in dependence of the number of battery cells 11 in the battery module. The location of the openings 15 varies in dependence of the shape and location of the battery cells and the space between them. The size and shape of the openings 15 may vary in dependence on the size and shape of the spaces 12 between the battery cells. ln the illustrated embodiment, the openings are circular. However, the openings 15 may have other shapes, such as rectangular, triangular, or Y- shaped. The distributor plate 14 can be flexible, rigid, or semirigid. ln another aspect a combination of at least two distributor plates can be used, where one distributor plate is made of rigid material and the other(s) of flexible or semi-rigid material. The distributor plate 14 can be made ofany suitable material, such as a polymer, a metal, an alloy, and the like. Preferably, the distributor plate is made of a flexible material, such as EPDM, Neoprene, Polyamide. ln one aspect, the distributor plate can be made of an electrically conducting material, such metal or metal alloy, flexifilm or PCB and has an additional function as electrical connector.
The manifold structure 17 including the fluid channels 18 can be designs in different ways. Figures 5a-c show three examples of different manifold structures 17a-c. The figures 5a-c show the bottom surfaces 19 of the manifold structures 17a-c.
Figure 5a shows a first example of a manifold structure 17a in a view from below. The manifold structure 17a comprises a plurality of straight fluid channels 18a extending from the first end 2a to the second end 2b ofthe casing 2. Each ofthe fluid channels 18a has an open side facing the distributor plate 14. The open sides of the fluid channels 18a define elongated openings 20a in the bottom surface 19a of the manifold structure 17a. The elongated openings 20a are facing the distributor plate 14 and the openings 15 in the distributor plate. The elongated openings 20a extend over the openings 15 in the distributor plate from the first end 2a to the second end 2b of the casing 2 so that the openings 15 in the distributor plate are in fluid communication with the channels 18a. The distributor plate 14 can be tightly attached to the manifold structure 17a so that the parts of the elongated openings 2a, which do not face the openings 15 in the distributor plate, are sealed by the distributor plate 14. The distributor plate 14 forms the bottoms of the fluid channels 18a. The elongated openings 20a in the manifold structure 18a are arranged so that they face the openings 15 in the distributor plate so that the fluid in the fluid channels 18a can leave the channels through the openings 15 in the distributor plate. ln this example, each of the elongated opening 20a in the manifold structure faces more than one of the openings 15 in the distributor plate. Thus, one fluid channel 18a supplies fluid to a plurality of openings 15 in the distributor plate. The upper sides of the fluid channels 18a can be closed or open. lf the upper sides of the fluid channels 18a are closed, the manifold structure 17a can be integrated into one ofthe first and second walls 3a-b. The manifold structure 17a comprises an inlet channel 21 arranged perpendicular to the fluid channels 18a and in fluid communication with the fluid channels 18a for supplying the fluid channels with fluid. The inlet channel 21 has an inlet opening arranged in fluid communication with the inlet entrance 8 of the casing for receiving the fluid. Alternatively, if the manifold structure is integrated into one of the walls of the casing, the inlet opening of the inlet channel 21 is the inlet entrance Figure 5b shows a second example of a manifold structure 17b in a view from below. The manifold structure 17b comprises a plurality of fluid channels 18b. ln this example, the fluid channels 18b branches into a plurality of narrower fluid channels 18b'. The fluid channels 18b will become narrower closer to the ends ofthe fluid channels. The cross-section areas ofthe fluid channels 18b are decreasing further away from the fluid entrance. Each of the fluid channels 18a has an open side facing the distributor plate 14. The open sides the fluid channels 18b define elongated openings 20b in the bottom surface 19b of the manifold structure 17b. The elongated openings 20b in the fluid channels 18b faces the openings 15 in the distributor plate so that the openings 15 in the distributor plate are in fluid communication with the channels 18b. The distributor plate 14 is attached to the manifold structure 17b so that the elongated openings 20b in the bottom surface 19 of the manifold structure are partly sealed by the distributor plate. Each elongated opening 20b in the manifold structure faces one or more ofthe openings 15 in the distributor plate. The upper sides ofthe fluid channels 18b can be closed or opened. lf the upper sides of the fluid channels 18b are closed, the manifold structure 17b can be integrated into one of the first and second walls 3a-b. lf the upper sides of the fluid channels 18b are opened, the manifold structure 17b can be attached to any of the first and second walls 3a-b so that the upper sides ofthe fluid channels 18b are sealed by the wall of the casing. ln this example, the fluid is supplied to a fluid channel 18b in a central portion of the manifold structure 17b.
Figure 5c shows a third example of a manifold structure 17c in a view from below. The manifold structure 17c comprises a plurality of fluid channels 18c. ln this example, the fluid channels 18c branches into a plurality of narrower fluid channels 18c'. The fluid channels 18b will become thinner closer to the end of the channels. The cross-section areas of the fluid channels 18c are decreasing further away from the fluid entrance. The fluid channels 18c are smoothly bent, as seen in figure 5c. The shape of the channels 18c is balanced through the smooth bends to avoid turbulence and to control the pressure. Sharp bents of the channels 18c are avoided. The fluid channels 18c may extend over one or more of the openings 15 in the distributor plate so that the openings 15 in the distributor plate are in fluid communication with the channels 18c. ln one aspect, each of the branches of the fluid channels 18c ends in one of the openings 15 in the distributor plate.Each ofthe fluid channels 18c has an upper side facing the first wall 3a and a lower side facing the distributor plate 14. ln this example, the upper sides as well as the lower sides of the fluid channels 18c are opened. Thus, the fluid channels 18c define elongated openings 20c in the manifold structure. The upper sides of the channels 18c form elongated openings in a top surface of the manifold structure. The lower sides of the channels 18c are opened and form elongated openings 20c in the bottom surface 19c of the manifold structure 17c. ln one example, the manifold structure 17c is arranged between the distributor plate 14 and the first wall 3a. The distributor plate 14 is tightly attached to the bottom surface 19 of the manifold structure 17c so that the elongated openings 20c in the bottom surface of the manifold structure are partly sealed by the distributor plate 14. The upper surface of the manifold structure 17c is tightly attached to the first wall 3a so that the elongated openings in the top surface of the manifold structure are sealed by the first wall 3a. Thus, the first wall 3a and the distributor plate 14 seal the fluid channels 18c in the manifold structure. Thus, the fluid channels 18c are defined by the first wall 3a, the manifold structure, and the distributor plate 14. This aspect facilities manufacturing of the fluid channels.
Figure 6 shows an example of a battery module 1a including the manifold structure 17a shown in figure 5a. ln this example, the manifold structure 17a is integrated into the first walls 3a of the casing. ln this example, the fluid entrance 8 is disposed in the front wall 3e of the casing in the vicinity of the first end 2a of the casing 2. The distributor plate 14 is attached to the manifold structure 17a. The fluid enters the casing 2 through the fluid entrance 8 and is guided by the fluid channels 18a to the openings 15 in the distributor plate 14. The fluid enters the spaces 12 between the battery cells 11 and flows parallel to the axis ofthe battery cells along the envelop surfaces of the battery cells. The fluid exits the casing through the fluid outlet 9 at an opposite side of the stack 5 of battery cells. ln this example, the fluid outlet 9 is disposed in the front wall 3e of the casing in the vicinity of the second end 2b of the casing.
Figure 7 shows another example of a battery module 1b including any of the manifold structure 17b-c shown in figures 5b and 5c.
Figure 8 shows the battery module 1b in figure 7 from above. ln this example, the manifold structure 17b-c is arranged between the distributor plate 14 and the first wall 3a. The distributor plate 14 is attached to the manifold structure 17b-c, and the manifold structure 17b-c is attached to the first wall 3a. ln this example, the fluid entrance 8' is arranged in a central portion of the first wall 3a at a distance from the edges 4 of the first wall 3a, and the first wall 3a is provided with an inlet channel 22 arranged between one edge 4a of the first wall 3a and the fluid entrance 8' for supplying the fluid to the fluid entrance 8', as shown in figure 8. An inlet port 23 is connected to the fluid entrance 8'. The second wall 3b ofthe casing is provided with a fluid outlet 9' for the fluid. The second fluid outlet 9' is arranged in a central portion of the second wall 3b at a distance from the edges of the second wall 3b. The fluid enters the casing 2 through the fluid entrance 8' and is guided by the fluid channels 18b-c tothe openings 15 in the distributor plate 14. The fluid enters the spaces 12 between the battery cells and flows parallel to the axis of the battery cells 11 along the envelop surfaces of the battery cells. The fluid exits the casing 2 through the fluid outlet 9' at the opposite side of the stack 5 of battery cells 11, as shown in figure Figure 9 shows yet another example of a battery module 1c. The battery module 1c differs from the battery module 1b disclosed in figure 3 and 7 in that the battery comprises a collector plate 24 disposed between the second wall 3b and the stack 5 of battery cells on an opposite side of the stack 5 of battery cells with respect to the distributor plate 14. The collector plate 24 is provided with a plurality of openings 15' for receiving the fluid from the spaces 12 between the battery cells 11. The openings 15' ofthe collector plate 24 are preferably aligned with the openings 15 ofthe distributor plate 14. Preferably, the collector plate 24 is designed in the same way as the distributor plate 14. The battery module 1c further comprises a second manifold structure 17' arranged between the collector plate 24 and the fluid outlet 9. The second manifold structure 17' comprises a plurality of second fluid channels 12' arranged for guiding the fluid from the openings 15' in the collector plate 24 to the fluid outlet 9 in the second wall 3b. The second manifold structure 17' is, for example, any of the manifold structures 17a-c shown in figures 5a-c.
The battery module may also comprise one or more cell holders for holding the battery cells 11 in their positions relative each other. The cell holder ensures a minimum distance between battery cells allowing a fluid flow along the envelop surfaces of the battery cells 11 in a direction parallel with the symmetry axes of the battery cells. The holder also ensures a minimum distance to avoid short circuit.
Figure 10 shows an example of a cell holder 26. The cell holder 26 comprises a plurality of through holes 28 for receiving the battery cells 11 and a plurality of openings 30 disposed between the through holes 28 to allow the fluid to pass through the cell holder 26. Preferably, the plurality of openings 30 are aligned with the openings 15 in the distributor plate 14. Suitably, the openings 30 correspond to and have the same shape and positions as the openings 15 in the distributor plate. The cell holder 26 is disposed in the casing 2 and is adapted to receive and support the battery cells 11 in the stack 5 within the casing. ln one embodiment, the battery module comprises two cell holders 26. One of the cell holders 26 is disposed at the top of the stack of battery cells, and the other cell holder is disposed at the bottom of the stack 5 of battery cells. This location of the cell holders is advantageous since the cell holders will not disturb the fluid flow along the surfaces of the battery cells. Accordingly, a laminar flow of fluid between the battery cells is achieved. The cell holder 26 can be made of any suitable material, such as a polymer, a metal, an alloy, and the like. Also, in some embodiments the cell holder 26 can be formed by the distributor plateThe battery cells 11 in the stack 5 are electrically connected to each other. ln one embodiment, each ofthe battery cells may be electrically connected to each other in a series configuration. ln yet other embodiments, each of the battery cells may be electrically connected to each other in a parallel configuration, based on application requirements. The battery module comprises one or more electrical conductors, such as busbars, adapted to provide electrical connection between adjacent battery cells. Each ofthe battery cells is provided with poles for connection to the electrical conductor.
Figure 11 shows an example of battery cells 11 electrically connected to each other by means of an electrical conductor 32 connected to the battery cells. ln the illustrated example, the electrical conductor 32 is a busbar. The electrical conductor 32 is adapted to provide electrical connection between a plurality of neighbouring battery cells. The electrical conductor 32 is in electrical contact with the poles ofthe plurality of neighbouring battery cells 11. The electrical conductor 32 comprise a plurality of openings 43 to allow the fluid to pass through the electrical conductor. Preferably, the openings 43 in the electricals connector 32 are aligned with the openings 15 in the distributor plate. The battery module may comprise one or more electrical conductors 32. The electrical conductor 32 can be arranged on top of and/or below the battery cells 11. The electrical conductor 32 may be made of any electrically conductive material, such as a metal, an alloy, and the like. For example, the electrical conductor 32 is a metal foil, or a laminate of polymer and electric wirings. The electrical conductor 32 can also be connected to the one or more electric ports 10. For example, the distributor plate 14 can be made of an electrically conducting material and be used as the electrical conductor 32. ln one aspect, the electrical conductor 32 is the distributor plate ln order to improve the liquid cooling, the liquid flow inside the liquid cooled module 1;1a;1b;1c can comprise restricting members in the spaces 12 formed between the heat generating components 11. This is shown in Fig. ln Fig. 12 restricting members in the form of elongated elements 160 are shown located in the spaces 12 formed between cylindrical heat generating components 11. The restricting members in the spaces 12 can have multiple purposes. For example, by locating a restricting member 160 between cylindrical heat generating components 11, the liquid flow around the cylindrical heat generating components can be improved in that the liquid is forced to have its main flow closer to the heat generating component 11 and thereby improve the heat dissipation from the heat generating component. While the restricting members 160 are located in the spaces 12 they are not obstructing the axial flow along the sides of the battery cells 12. The restricting members will instead re-distribute the flow around the heat generating components 12. ln other words, the restricting members 160 will re-configure the shape ofthe spaces 12 so the flow channels formed in the spaces 12 will have another shape. There will still be an axial path that is unobstructed to support a free flow of the colling liquid/fluid used to cool the heat generating components 12. Thus, the shape of the flowchannels in the spaces 12 can in this way be changed. The fluid is then moved in an axial direction in fluid channels formed in the spaces (12). The length of the fluid channels then corresponds to the axial length of the heat generating components. ln other embodiments the fluid channels extend almost the length of the heat generating components such as at least 80% of the length of the heat generating components.
The restricting members 160 can also serve as an electric isolator and be made from an isolating material. The restricting member can also serve as a distance member to keep the heat generating components in place at a desired location.
Further, the restricting members 160 can serve as a compensating member to enable thermal expansion ofthe heat generating components 11. ln Fig. 13 an exemplary restricting member 160 is shown. The restricting member 160 of Fig. 13 is generally cylindrical in shape and can be said to be pin shaped. By providing a hollow section inside the restricting member 160 the restricting member 160 can be made to at least partially collapse to compensate for thermal expansion ofthe heat generating components 11 when the restricting member 160 is located in the spaces 12 between the heat generating components. Fig. 13 shows such a collapsed restricting member As shown in Fig. 13, the restricting members 160 can be generally cylindrical in shape. This can be particularly advantageous when the restricting members are located in spaces between cylindrical heat generating components. However, other shapes of the restricting members 160 can also be used. For example, semi-cylindrical shapes of the restricting members 160 can be used or prismatic shaped restricting members can be used. ln other embodiments partial cylinders other than semi-cylinders can be used such as quarter cylinders or other types of cut cylinders or prisms. The restricting members can advantageously have the same axial length as the heat generating components Depending on the purpose of the restricting member 160 the material can be selected accordingly. For example, in accordance with some embodiments, the restricting members are formed by an elastic material. This can be useful when the restricting member should serve as a thermal expansion compensator. The restricting members can also be formed by an electric conductive material to aid in conducting electricity or the restricting members can be formed by an electrically isolating material to form an isolating member. ln accordance with some embodiments the pump for generating a flow inside the liquid cooled module can be located inside the liquid cooled module. ln particular the pump for pumping the fluid is located inside the liquid sealed casing. The pump can advantageously be an Electrohydrodynamic (EHD) pump. However other types of pumps are also envisaged such as a mechanical pump, a magnetohydrodynamic pump, a centrifugal pump, an osmotic pump, a sound wave pump, a diaphragm pump, a piezoelectric pump, a peristaltic pump, a nozzle-diffuser pump, a tesla pump, a capillary pump or similar. The pump can be cylindrical in shape. ln Fig. 14 a pump 111 is shown located inside a liquid sealed casing 2. The pump can pump liquid towards or away from a heat absorbing structure. The heat absorbing structure can be a wall in the liquid cooled module. ln particular the heat absorbing structure can be side wall of the liquid sealed casing 2 as is shown in Fig. 14. The side wall can be provided with fins or flanges or can have some other irregular shape or protrusions to enhance heat transfer. For example, the side wall can have a wicked or corrugated structure as is shown in Fig. 14. ln Fig. 14, the pump 111 is located in a liquid 112 inside the casing 2. The liquid 112 transfers heat from heat generating components 11 disposed inside the casing 2. ln some embodiments the pump 111 can be located inside a heat generating components and in some embodiments the pump is, as here located in the space 12 between such heat generating components ln accordance with some embodiments at least one partly cylindrical, in particular a semi cylindrical heat sink member 118 is provided located on a side wall ofthe casing 2 or at the bottom of the casing 2. Such an at least one partly cylindrical heat sink member 118 can be provided with a flange or flanges or some other type of protruding member. An exemplary heat sink member 118 is shown in a cross-sectional view in Fig.
Other modifications to improve the working of the liquid cooled module as described herein can also be made. For example, the liquid cooled module can comprise at least one at least heater element. The heater element can be made to generate heat during for example a start phase. The heater element can be cylindrical or semi cylindrical. ln Fig. 16 a cross-sectional top view of a liquid cooled module 1 a described above is shown. The heat generating components 11 can house different kinds of components including but not limited to battery cells, motors, pumps heat generators. ln the spaces between the heat generating components flow restricting members 160 can be located. The heat generating components 11 can be cylindrical as shown in Fig. 16, but could have other shapes such as a prismatic shape. There can also be components not having a cylindrical or prismatic shape. ln some embodiments cut elements such as cut cylinders or prisms are located inside the liquid cooled module 1. The elements can for example be semi or quarter cylinders or prisms. The cut elements can house different components such as motor or heaters, but could also be heat sink members or thermally compensating structures. ln Fig. 16 cut elements are exemplified by heat sink members 118, but they could form other types of elements as described above. The cut elements 118 can typically be located at the rim ofthe liquid cooled casing 2 to make better use of the space inside the casing 2. The cut elements 118 can in some embodiments be attached to the casing. ln some other embodiments the cut elements are not connected to the casingAlso, the cut elements 118 can be used to improve the flow inside the casing 2. The cut elements can then be part ofthe casing and shaped to improve the liquid flow inside the casing ln order to further improve the efficiency of the liquid cooled module 1 as described herein a bubble trap arrangement can be added to remove air from the liquid flowing inside the liquid cooled module. ln Fig. 17, a bubble trap arrangement 170 is shown for a liquid cooled module 1 without an inlet/outlet. The bubble trap arrangement can also be used when the liquid cooled module 1 is provided with a liquid inlet and a liquid outlet as is shown in Fig.
The bubble trap arrangement 170 can be of different types. ln Fig. 19, a bubble trap arrangement 180 of a different kind is shown. Thus, in the embodiment of Figs 17 and 18 one or more air bubble trap structure is provided a top section of the air bubble trap arrangement. ln the embodiment of Figs 17 and 18 the air bubble trap structure 171 is shaped as a cut off cone or pyramid. ln the embodiment of Fig. 19 the at least one air bubble trap structure 181 is shaped as a half sphere.
While the module as described herein is typically liquid cooled, it is also envisaged that a gas is used instead of a liquid to transport heat within the module. ln such an embodiment where the fluid is gas instead of a liquid, the fluid is in gas form and moved by at least one silent ion- wind-based pump. The module can then comprise at least one silent ion-wind enhanced flanged heat sink structure on the external casing walls.
The present invention is not limited to the embodiments disclosed but may be varied and modified within the scope of the following claims. For example, the flow channels can be designed in different ways. The liquid cooled module is advantageous for cooling many types of heat generating components. Also, different embodiments can be combined to enhance the cooling capacity of the liquid cooled module or to meet other needs such as making the liquid cooled module lighter or smaller. For example, the liquid cooled module may comprise two or more distributor plates arranged on top of each other. Different aspects of the embodiments disclosed can be combined with each other. For example, the distributor plate can be an integrated in the manifold structure so that the manifold structure and the distributor plate can be manufactured in one piece. For example, the electrical conductor may function as distributor plate. Also, the distributor plate can have flanges or funnels to increase cooling and or to enhance distribution of liquid.Reference list 1, 1a, 1b, 1c battery module 2 casing 2a First end ofthe casing 2b Second end of the casing 3a-f walls of the casing 4, 4a edge of the first wall stack of battery cells 8, 8' fluid entrance 9, 9' fluid outlet electric ports 11 battery cells /heat generating component 12 Spaces between the cells 14 restricting member /distributor plate openings in the distributor plate ' openings in the collector plate 17, 17a-c restricting member/ manifold structure 17' second manifold structure 18, 18a-c, 18b', 18c' fluid channels 19, 19a-c bottom surface of manifold structure 20a-c elongated openings in the manifold structure 21 inlet channel ofthe manifold structure 22 inlet channel of the first wall 23 |nlet port 24 collector plate second fluid channels 26 cell holder 28 through holes openings in the cell holder 32 Electrical connector 43 openings in the electrical connector 111 pump 112 liquid/fluid 118 cut element/ heat sink member 160, 161 restricting member/pin 170, 180 Bubble trap arrangement 171, 181 air bubble trap structure

Claims (18)

m
1. A liquid cooled module (1;1a;1b;1c) comprising: - a plurality of heat generating components (11) arranged so that spaces (12) for housing a moving fluid are formed around the heat generating components, - a liquid sealed casing (2) enclosing the heat generating components (11), wherein at least one restricting member (14, 17,160) located in the flow path ofthe moving fluid ~.~.. .~_: 1.:... ...~._.\...t..c.t..:.. .t..\..~....~~....\..:- ..:.~'._...,..«.«^~1\ \~\.\ \ ¿ :uw \ »q smu-.w -\ ww) xx \ ~ . \¿ \~ .ps \~ .s ~.\.~- -..3.\ w t \ H u \.~.\_ i» _ ~.~~ - “~ = “ “ *nä-_ inåt: :~_\~~=š:; Enx-flhüèšf: 3:1 WB: .wšïnzšzzßez mm: :\_.~\.:.=:.\:.\= :S1 .som ïnxrazcxpë \_:..-;.,=. ~ J x v s»
2. The liquid cooled module according to claim 1, wherein the fluid is moved in an axial direction in fluid channels formed in the spaces (12) and where no inflicting structures are located in the way for the axial flow of the fluid.
3. The liquid cooled module according to claim 1 or 2, wherein a pump for pumping the fluid is located inside the liquid sealed casing.
4. The liquid cooled module according to claim 3, wherein the pump is an Electrohydrodynamic (EHD) pump.
5. The liquid cooled module according to claim 3 or 4, wherein the pump is cylindrical in shape. The liquid cooled module according to any one of claims 1 - further comprising a distributor plate (14) disposed between the casing (2) and the heat generating components (11) the distributor plate being provided with a plurality of openings (15) for distributing the fluid to the spaces (12) between the heat generating components and a manifold structure (17;17a;17b;17c) comprising a plurality of fluid channels (18;18a;18b;18c) arranged between the at least one fluid entrance (8;8') and a distributor plate (14) to guide the fluid from the at least one fluid entrance (8;8') to the openings (15) in the distributor plate. The liquid cooled module according to claim wherein each of the fluid channels (18;18a;18b;18c) has an open side facing the distributor plate (14), and the distributor plate is tightly attached to the manifold structure (17;17a;17b;17c) so that the open sides of the channels are partly sealed by the distributor plate. The liquid cooled module according to claim orfgfšš, wherein the distributor plate is made of an electrically conducting material and is configured to act as an electrical connector. The liquid cooled module according to any one of claims 1 - further comprising at least one at least partly cylindrical shaped thermal expansion compensating structure. The liquid cooled module according to any one of claims 1 - wherein the restricting members are formed by an elastic material. The liquid cooled module according to any one of claims 1 - lfi-ïš, wherein the restricting members are formed by an electric conductive material. The liquid cooled module according to any one of claims 1 - wherein the liquid sealed casing comprises flanges and or at least one corrugated section. The liquid cooled module according to any one of claims 1 - lgšè, further comprising at least one partly cylindrical heat sink member located on a wall of the casing or at the bottom of the casing, wherein the at least one partly cylindrical heat sink member is provided with at least one flange. The liquid cooled module according to any one of claims 1 - wherein the at least one restricting member comprise a hollow section allowing compression of the restricting members. The liquid cooled module according to any one of claims 1 - lfgšš, wherein the at least one restricting member is formed by an electrically isolating material. The liquid cooled module according to any one of claims 1 - wherein the plurality of heat generating components (11) are cylindrical in shape. The liquid cooled module according to any one of claims 1 - when a manifold structure (17;17a;17b;17c) is provided and where the manifold (17;17a;17b;17c) is an integrated part of the casing (2). The liquid cooled module according to any one of claims 1 - wherein the fluid is moved in an axial direction in fluid channels formed in the spaces (12) and where the length of the fluid channels correspond to the axial length of the heat generating components.
SE2150581A 2021-05-06 2021-05-06 A liquid cooled module with a restricting member SE545205C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE2150581A SE545205C2 (en) 2021-05-06 2021-05-06 A liquid cooled module with a restricting member
EP22725574.2A EP4334995A1 (en) 2021-05-06 2022-05-05 Thermal management of a liquid cooled module
CN202280033265.4A CN117616619A (en) 2021-05-06 2022-05-05 Thermal Management of Liquid Cooling Modules
MX2023012939A MX2023012939A (en) 2021-05-06 2022-05-05 Thermal management of a liquid cooled module.
JP2023568279A JP2024517862A (en) 2021-05-06 2022-05-05 Liquid Cooling Module Thermal Management
KR1020237037925A KR20240006533A (en) 2021-05-06 2022-05-05 Thermal management of liquid-cooled modules
US18/558,760 US20240234871A1 (en) 2021-05-06 2022-05-05 Thermal management of a liquid cooled module
PCT/SE2022/050435 WO2022235192A1 (en) 2021-05-06 2022-05-05 Thermal management of a liquid cooled module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2150581A SE545205C2 (en) 2021-05-06 2021-05-06 A liquid cooled module with a restricting member

Publications (2)

Publication Number Publication Date
SE2150581A1 SE2150581A1 (en) 2022-11-07
SE545205C2 true SE545205C2 (en) 2023-05-16

Family

ID=81846409

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2150581A SE545205C2 (en) 2021-05-06 2021-05-06 A liquid cooled module with a restricting member

Country Status (8)

Country Link
US (1) US20240234871A1 (en)
EP (1) EP4334995A1 (en)
JP (1) JP2024517862A (en)
KR (1) KR20240006533A (en)
CN (1) CN117616619A (en)
MX (1) MX2023012939A (en)
SE (1) SE545205C2 (en)
WO (1) WO2022235192A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2550053A1 (en) * 2025-01-22 2026-07-23 Apr Tech Ab Battery cell support for battery module

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022108780A1 (en) * 2022-04-11 2023-10-12 Audi Aktiengesellschaft Cooling device, energy storage and method for cooling an energy storage device on both sides
EP4539211A4 (en) * 2023-04-25 2025-10-15 Lg Energy Solution Ltd BATTERY MODULE
CN119890551A (en) * 2023-10-23 2025-04-25 宁德时代新能源科技股份有限公司 Current collecting component, thermal management assembly, battery and electricity utilization device
US20250149680A1 (en) * 2023-11-06 2025-05-08 Deere & Company Heater for battery
US20250149677A1 (en) * 2023-11-06 2025-05-08 Deere & Company Battery system
US20250149678A1 (en) * 2023-11-06 2025-05-08 Deere & Company Battery fluid flow control
CN117317449B (en) * 2023-11-29 2024-01-26 珠海科创储能科技有限公司 Battery cabinet and flow adjusting method
KR102974459B1 (en) * 2024-01-30 2026-06-05 주식회사 엘지에너지솔루션 Battery pack and device including the same
CN118263563B (en) * 2024-04-02 2026-06-19 柯莱柏(杭州)能源技术有限公司 Immersed liquid cooling lithium battery module
IT202400007807A1 (en) * 2024-04-09 2025-10-09 Fiat Ricerche "ELECTRIC BATTERY PACK WITH BATTERY CELLS IN DIRECT CONTACT WITH A FLOW OF A TEMPERATURE-REGULATING LIQUID, WITH OPTIMIZED DISTRIBUTION OF THE TEMPERATURE-REGULATING LIQUID"
IT202400007816A1 (en) * 2024-04-09 2025-10-09 Fiat Ricerche "ELECTRIC BATTERY PACK WITH BATTERY CELLS IN DIRECT CONTACT WITH A FLOW OF A TEMPERATURE-REGULATING LIQUID, WITH CELL SUPPORT RIBS DEFINING DISTRIBUTION PASSAGES FOR THE TEMPERATURE-REGULATING LIQUID"
CN118231934B (en) * 2024-05-21 2024-09-27 福建祥鑫新能源汽车配件制造有限公司 Water-cooled electric automobile battery box
SE2450895A1 (en) * 2024-09-10 2025-12-23 Apr Tech Ab Immersion module
CN223427552U (en) * 2024-09-24 2025-10-10 惠州亿纬锂能股份有限公司 Battery module and battery pack
CN119674349B (en) * 2024-12-16 2025-09-19 华东交通大学 A chain-type lotus root-like thermal management flow channel device and control method
CN120547850B (en) * 2025-07-28 2025-09-23 苏州元脑智能科技有限公司 Package and electronic equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021924A (en) * 1988-09-19 1991-06-04 Hitachi, Ltd. Semiconductor cooling device
US5349831A (en) * 1991-11-08 1994-09-27 Hitachi, Ltd. Apparatus for cooling heat generating members
US20140162106A1 (en) * 2012-12-07 2014-06-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Battery arrangement and method for cooling a battery
DE102016109277A1 (en) * 2016-05-20 2017-11-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft battery module
EP3696876A1 (en) * 2019-02-18 2020-08-19 3M Innovative Properties Company Battery module

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415847A (en) * 1981-08-07 1983-11-15 Energy Development Associates, Inc. Method and apparatus for supplying cooling liquid to a storage battery
DE3247969C2 (en) 1982-12-24 1987-04-02 Brown, Boveri & Cie Ag, 6800 Mannheim High temperature storage battery
JP3049808B2 (en) * 1991-03-29 2000-06-05 石川島播磨重工業株式会社 Liquid transfer pump
US5763118A (en) * 1996-05-09 1998-06-09 Hughes Aircraft Company Battery system with a high-thermal-conductivity split shell structural support
US20090263708A1 (en) * 2008-04-02 2009-10-22 Josh Bender System and method of integrated thermal management for a multi-cell battery pack
JP2012156057A (en) * 2011-01-27 2012-08-16 Panasonic Corp Battery module and battery pack including the same
JP5589016B2 (en) * 2012-03-14 2014-09-10 株式会社日立製作所 Battery module
KR101255250B1 (en) * 2012-03-23 2013-04-16 삼성에스디아이 주식회사 Battery module
JP6048292B2 (en) * 2013-04-18 2016-12-21 株式会社デンソー EHD pump
JP2016103378A (en) * 2014-11-27 2016-06-02 三洋電機株式会社 Battery pack
CN107431161B (en) * 2015-09-08 2020-11-20 株式会社Lg 化学 Battery module with improved cooling performance
US10132527B2 (en) * 2015-09-29 2018-11-20 Worcester Polytechnic Institute Electrohydrodynamic (EHD) refrigerant pump
JP6500866B2 (en) * 2016-09-16 2019-04-17 トヨタ自動車株式会社 Fuel cell module
US10224525B2 (en) * 2016-12-19 2019-03-05 Ford Global Technologies, Llc Battery support assembly and method with a diverging flow path
EP3410054B1 (en) * 2017-05-30 2022-10-26 Ge Avio S.r.l. Additively manufactured heat exchanger
CN207368859U (en) * 2017-10-16 2018-05-15 华南理工大学 A kind of through type bipolar electrode piece electrohydrodynamic Micropump
KR102365631B1 (en) * 2018-01-09 2022-02-21 주식회사 엘지에너지솔루션 Battery module
FR3077431B1 (en) * 2018-01-29 2020-07-31 Commissariat Energie Atomique ELECTRIC ACCUMULATOR AND BATTERY MODULE CONSISTING OF SEVERAL MODULES
FR3077430B1 (en) * 2018-01-29 2020-02-14 Commissariat A L'energie Atomique Et Aux Energies Alternatives ELECTRIC BATTERY MODULE AND BATTERY COMPRISING SEVERAL MODULES
JP2019185975A (en) * 2018-04-06 2019-10-24 アイシン精機株式会社 Battery cell unit cooling device
JP7137360B2 (en) * 2018-06-04 2022-09-14 株式会社Subaru battery module
KR20200005318A (en) * 2018-07-06 2020-01-15 현대자동차주식회사 Battery apparatus for vehicle and manufacturing method of the same
KR102711972B1 (en) * 2018-10-08 2024-10-02 삼성에스디아이 주식회사 Battery pack
CN109301391B (en) * 2018-10-25 2024-11-19 广东合一新材料研究院有限公司 A liquid immersion cooling vehicle power battery pack
DE102018221477A1 (en) * 2018-12-12 2020-06-18 Robert Bosch Gmbh Battery module comprising a plurality of battery cells
CN113366696A (en) * 2019-01-29 2021-09-07 纳拉邦达科技控股有限公司 Battery pack
US20200266506A1 (en) 2019-02-18 2020-08-20 3M Innovative Properties Company Battery module and system
JP2020177831A (en) * 2019-04-19 2020-10-29 矢崎総業株式会社 Vehicle battery pack
CN210136909U (en) * 2019-06-18 2020-03-10 宁德时代新能源科技股份有限公司 Temperature control components and battery packs
FR3098648B1 (en) * 2019-07-08 2023-04-21 Commissariat Energie Atomique Busbar for battery pack, intended to electrically connect at least one accumulator of the pack and to allow circulation of a heat transfer fluid within it for optimal cooling of the accumulator and the pack, in particular in the event of thermal runaway
IT201900018116A1 (en) * 2019-10-07 2021-04-07 Interactive Fully Electrical Vehicles S R L BATTERY PACK FOR THE PROPULSION OF AN ELECTRIC VEHICLE
CN114730949B (en) * 2019-11-13 2024-04-16 株式会社丰田自动织机 Power storage device
CN115398711B (en) * 2020-04-24 2025-10-24 Tvs电机股份有限公司 Battery module with battery holder assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021924A (en) * 1988-09-19 1991-06-04 Hitachi, Ltd. Semiconductor cooling device
US5349831A (en) * 1991-11-08 1994-09-27 Hitachi, Ltd. Apparatus for cooling heat generating members
US20140162106A1 (en) * 2012-12-07 2014-06-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Battery arrangement and method for cooling a battery
DE102016109277A1 (en) * 2016-05-20 2017-11-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft battery module
EP3696876A1 (en) * 2019-02-18 2020-08-19 3M Innovative Properties Company Battery module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2550053A1 (en) * 2025-01-22 2026-07-23 Apr Tech Ab Battery cell support for battery module

Also Published As

Publication number Publication date
MX2023012939A (en) 2023-12-15
US20240234871A1 (en) 2024-07-11
SE2150581A1 (en) 2022-11-07
WO2022235192A1 (en) 2022-11-10
EP4334995A1 (en) 2024-03-13
CN117616619A (en) 2024-02-27
JP2024517862A (en) 2024-04-23
KR20240006533A (en) 2024-01-15

Similar Documents

Publication Publication Date Title
US11967541B2 (en) Liquid-based heat exchanger
US10509446B2 (en) Cooling apparatus for electronic components
US12099385B2 (en) Cooling apparatus
MX2023012939A (en) Thermal management of a liquid cooled module.
US7753108B2 (en) Liquid cooling device
CN110007732B (en) Liquid cooling device and display adapter with same
US12158786B2 (en) Cooling apparatus
KR20230153406A (en) Cooling plate with integrated sliding pedestal and processing system including same
US20130206369A1 (en) Heat dissipating device
US20210195793A1 (en) Liquid-cooling heat dissipation device
JP2502548Y2 (en) Heat transfer device
US20210378142A1 (en) Heat dissipation device and server using same
US9307680B2 (en) Cooled electronic part enclosure
TWM631285U (en) Water cooling type heat dissipation device
CN113543578A (en) Liquid-cooled heat dissipation module and electronic device having the liquid-cooled heat dissipation module
TWI725995B (en) Drive unit and assembly with cooling
MY204943A (en) Submersible pump
JP7584059B2 (en) Cooling system
US20240365503A1 (en) Coldplate system and cooling arrangement
BRPI0705496A (en) static inverter set
CN220402235U (en) Liquid cooling shell
CN116887577B (en) Liquid cooling shell
TWI576538B (en) Illumination device and heat dissipation module thereof
TWI628998B (en) Liquid cooling block head having uniform flowing paths
CN201533481U (en) Heat sink and heat sink assembly