WO2022189295A1 - Direktgekühltes batteriemodul und batterie mit einem direktgekühlten batteriemodul - Google Patents
Direktgekühltes batteriemodul und batterie mit einem direktgekühlten batteriemodul Download PDFInfo
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- WO2022189295A1 WO2022189295A1 PCT/EP2022/055573 EP2022055573W WO2022189295A1 WO 2022189295 A1 WO2022189295 A1 WO 2022189295A1 EP 2022055573 W EP2022055573 W EP 2022055573W WO 2022189295 A1 WO2022189295 A1 WO 2022189295A1
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- Prior art keywords
- battery
- cooling liquid
- module
- battery module
- fluid
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Classifications
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- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/655—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
-
- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- 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
-
- 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
-
- 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
- Directly cooled battery module and battery with a directly cooled battery module are Directly cooled battery module and battery with a directly cooled battery module
- the invention relates to a directly cooled battery module and a battery with at least one directly cooled battery module, in particular for an electrically driven vehicle.
- High-voltage batteries for electrically powered vehicles such as hybrid, plug-in or electric vehicles, or for stationary applications, such as power suppliers or power storage, consist of many individual cells electrically connected in series and/or in parallel.
- the individual cells are usually combined in so-called battery modules, each of which contains a certain number of battery cells as a cell pack, including the devices for mechanically fixing them, for electrical contacting and for temperature control (cooling, heating).
- the battery modules typically 8 to 36 battery modules per battery, are in turn housed in a stable battery housing, which also includes the necessary equipment for electrical control and protection of the battery, such as battery management system (BMS), fuses, contactors for switching the current on and off, cell voltage monitoring electronics ( cell supervision electronics CSE), ammeter and the connections to the outside (current supply and current discharge, coolant supply and coolant discharge, battery control connection and the like).
- BMS battery management system
- fuses fuse
- contactors for switching the current on and off
- cell voltage monitoring electronics cell supervision electronics CSE
- ammeter ammeter and the connections to the outside (current supply and current discharge, coolant supply and coolant discharge, battery control connection and the like).
- each battery module is usually designed as a module casing with a module housing that is tight on all sides and is provided with a coolant supply line and coolant discharge line as well as tight bushings through the module casing, in particular for the power supply line and current discharge line, the signal lines for the cell voltages, which go to the CSE or to a device for measuring the cell voltage and for the equalization of the state of charge, the so-called balancing, and for sensor lines, for example for temperature monitoring within the battery module.
- the object of the invention is to create an improved structure for a directly cooled battery module.
- a further object is to create a battery with at least one directly cooled battery module which has an improved structure of the battery module.
- a directly cooled battery module with at least one module enclosure and a plurality of within the
- Battery cells arranged in a module casing are proposed, with the module casing enclosing the majority of the battery cells at least in regions, the battery cells having a vertical axis and first and second end faces spaced apart from one another in the direction of the vertical axis and being arranged one after the other as a cell stack in a stacking direction transverse to the vertical axis.
- the battery module has a fluid supply device with at least one inlet opening, which directs a cooling liquid to the battery cells during normal operation.
- the battery module also has at least one outlet opening for the free outlet of the cooling liquid from the module casing and/or the
- the battery module according to the invention has the advantage that a hermetically sealed module casing can be dispensed with. This facilitates the construction of battery modules.
- safety devices of the battery modules and possibly also of the batteries can be simplified by such a configuration.
- the tightness of the battery modules which can only be achieved with great technical effort, and which is particularly complex with direct cooling with HFCs, since these can diffuse through any type of plastic casing or plastic seal and therefore have to be constantly supplemented, can thus be dispensed with.
- the module encapsulation can be designed to be simpler and less stable.
- the positive pressure comes from the necessary to maintain the coolant flow
- a necessary low overpressure of at most 100 mbar can be assumed. If, in another exemplary embodiment, the cooling liquid has to flow back below the cell pack on the bottom of the battery module and via a channel structure into an expansion tank, it can be assumed that a low excess pressure of at most 500 mbar is required.
- the coolant no longer has to be routed between the inlet and outlet connections through complex distribution, collector and guide devices in order to achieve uniform cooling of all the individual cells of a battery module.
- venting gas The gas that is produced, among other things, by the evaporation of the electrolyte.
- the module casing of the battery module according to the invention no longer has to be provided with overpressure devices such as valves, membranes or flaps, the so-called venting device, in order to prevent the destruction of a sealed module housing when the cells blow off. As a result, further costs and installation space requirements of the battery module can be saved.
- the electrically non-conductive cooling liquid can be fed to the battery module via lines, distributed within the battery module and then via at least one outlet opening in the module casing for defined exit of the cooling liquid to escape freely to the outside.
- the coolant that escapes from the battery modules into the battery housing during normal operation is then collected or sucked off there and can be returned to the coolant circuit.
- the battery module only the battery housing itself has to be sealed, which is usually already done to shield the battery modules from environmental influences, but not the large number of module housings of the battery modules arranged in the battery housing, which reduces the costs, the weight and the space requirement .
- the lines for supplying and discharging current, as well as the signal and measuring lines can be routed through simple openings or openings in the module casing, with the complex sealing being eliminated. Since the interior of the module is practically pressureless, the enclosure can be made significantly lighter. Additional venting devices in the module housing, which only open when there is internal overpressure, such as overpressure valves, overpressure membranes or overpressure flaps, are not required. Furthermore, with this solution, the usual
- a transverse axis can advantageously be formed between the connection elements of the battery cells, in particular transverse to the vertical axis and transverse to the stacking direction.
- the connection elements are in a longitudinal extension of the battery cell on the first end face
- At least one fluid channel can be arranged in an end plate between the first end face and the second end face of the battery cells within the module casing.
- Existing installation space can advantageously be used to guide the coolant, so that the battery module can be built relatively small. There is no need for additional piping for conducting the cooling liquid.
- the at least one inlet opening can be arranged in one of the end plates, in particular in the vicinity of the underside of the module casing.
- the battery module is favorably arranged between two end plates and clamped between them.
- the coolant can rise in the end plate to the end face with the electrical connections, flow there over the connections and flow in the opposite end plate to the opposite end face.
- Battery cells are created, overflowed and cooled particularly effectively.
- the entry opening into the end plate is arranged from the underside of the end plate and/or from the underside of the module casing.
- the at least one outlet opening can be arranged on the underside of the module casing. There, the coolant can freely into the environment
- the at least one outlet opening can advantageously be arranged close to the end plate with the at least one inlet opening, so that the cooling liquid can flow between the module casing and the battery cells and can continue to dissipate heat. Additional piping may be required to conduct the
- coolant are dispensed with.
- the coolant flows over the battery cells on the first end face in the area of the electrical connection elements and the coolant flows under them on the second end face at the bottom of the battery cells.
- the fluid supply device can have a distribution line with a plurality of
- the fluid supply device can have at least one inlet opening per battery cell, in particular per electrical connection element of the battery cells.
- the cooling liquid can advantageously be distributed over a large area within the battery module in order to achieve particularly effective cooling of the battery cells.
- At least one inlet opening per electrical connection element of the battery cells can be provided for the coolant from the distribution line into the interior of the battery module.
- the inlet opening can expediently be in the immediate vicinity of a connection element, for example directly opposite one
- Connection element may be provided. Alternatively or additionally, a plurality of outlet openings can be present.
- Outlet openings are in the form of unsealed openings, openings, gaps, for example for cables and sensor lines and the like, in the casing, through which another small part of the cooling liquid can escape in an undefined manner.
- the fluid supply device can be designed for a targeted distribution of the coolant over at least one of the two end faces of the battery cells in the cell stack.
- the fluid supply device for a targeted distribution of the coolant over the electric
- Connection elements of the battery cells can be formed in the cell pack.
- the cooling liquid can thus advantageously be distributed over a large area within the battery module over an end face of the battery cells, preferably the end face with the electrical connection elements, in order to achieve particularly effective cooling of the connection elements. Efficient dissipation of the heat can advantageously be achieved, since the heat in a battery cell usually arises in the area of the connection elements.
- the fluid supply device can have a nozzle arrangement which sprays the coolant onto the cell stack. In this way, the coolant can be distributed over a large area, for example on the end face of the battery cells, in particular that with the connection elements, in order to achieve the most effective possible cooling of the battery cells at the point where the heat is generated, namely the connection elements.
- At least one fluid channel can be arranged within the module casing between the first end face and the second end face of the battery cells in the cell stack.
- the cooling liquid flowing or standing in the at least one fluid channel can be used for areal cooling on the longitudinal sides or peripheral sides of the battery cells.
- a further favorable heat dissipation can take place by flat flow over the electrical connection elements on the first end face without an explicitly formed fluid channel.
- a filling element for example in the form of a blister, can advantageously be arranged in the area between the electrical connection elements along the cell stack, so that the coolant flows on both sides of the filling element essentially over the electrical connection elements.
- venting openings are arranged in the cell housings between the connection elements, a packing can nevertheless be arranged above them.
- the filling body can expediently have suitable cutouts at the location of the venting openings, through which escaping gas can flow out.
- the filling body promotes a suitable flow of the coolant over the electrical connection elements for the greatest possible heat dissipation at the point of origin, since the heat loss occurs to a large extent in the area of the connection elements.
- the packing also reduces the free volume in the battery module, so that a smaller volume of coolant is required.
- the cooling liquid can prevent or at least reduce thermal propagation due to the heat, especially in the event of increased heat development in a battery cell, for example in the event of overcharging or an internal short circuit, since the heat can be dissipated particularly effectively via flow or convection.
- a liquid-permeable layer in particular a porous adhesive mat
- a channel structure can be arranged with channels running from one end face to the other end face of the battery cells in the cell stack, which can run parallel or at an angle to the vertical axis, the channels being at least partially continuous or at least partially designed as blind channels.
- the cooling liquid can be present in the liquid-permeable layer or the channel structure between the battery cells or can even flow through the channels. The coolant can thus be used for areal cooling on the longitudinal sides or peripheral sides of the battery cells.
- the cooling liquid can prevent or at least reduce thermal propagation due to the heat, especially in the event of increased heat development in a battery cell, for example in the event of overcharging or an internal short circuit, since the heat can be dissipated particularly effectively via flow or convection.
- a porous foam mat or a rubber-like press mat with channels can advantageously be arranged as a liquid-permeable layer between the battery cells, which fills with cooling liquid when the battery is put into operation.
- This has an additional advantage in the event of thermal propagation of the battery. After an exothermic reaction in a battery cell in the battery module with a venting (blow-off) of the resulting gas on the first end face directly into the coolant, so-called capacitive cooling occurs, in which the thermal energy is not dissipated, but absorbed and stored by the surrounding material and, in the extreme case, to evaporative cooling between the defective battery cell and the two neighboring cells and the first or second end face to which coolant is applied or possibly longitudinal sides of the defective battery cell to which coolant is applied.
- venting gas can combine with part of the vaporized cooling liquid and be safely discharged into the battery via a venting mechanism outside the battery module.
- a gas mixture created by combining electrolyte gas and coolant is usually much less flammable than pure electrolyte gas. Direct ignition above the battery cells by the coolant can also be prevented in this way. Sparking, which causes the electrolytic gas to ignite, can be prevented. The coolant can extinguish the defective, ignited battery cell. The malicious process may come to a halt.
- the inlet openings for the cooling liquid can be arranged directed towards the first end faces in such a way that the cooling liquid emerges from the inlet openings onto the first end faces.
- the outlet openings can be arranged on the opposite side of the cell stack with respect to the vertical axis. With upright battery cells with the first end face with the connection elements on top, the coolant can enter at the top and flow down between the battery cells due to gravity and thus freely exit from the battery module on the bottom. This allows them
- Battery cells are cooled particularly effectively.
- the inlet openings can be arranged directed at the second end faces so that the cooling liquid from the inlet openings on the second
- the outlet openings can be arranged on the opposite side of the cell stack with respect to the vertical axis.
- the coolant can also be fed in at the bottom of the battery module, rise along the longitudinal sides of the battery cells and emerge from the battery module at the top.
- the fluid supply device can be arranged with respect to the vertical axis on the side of the cell stack with the first end faces or on the side of the cell stack with the second end faces.
- the fluid supply device can expediently be arranged on the side of the cell stack where the heat is generated, in order to be able to dissipate the heat particularly effectively.
- the outlet openings can be arranged laterally in the module casing at a height of the vertical axis between the first and second end faces of the battery cells in the cell stack. In this way, a lower part of the battery module can be flooded with the cooling liquid and through
- the module casing can be designed as a wall running around the vertical axis of the cell stack, in particular as a band or frame.
- the module casing can thus serve as a module frame, for example, which can apply a pressure required for operating the battery cells due to cell thickness growth due to cyclic charging and discharging and/or due to cell aging.
- a module frame does not have to be hermetically sealed in the battery module according to the invention, which allows an advantageous and inexpensive design.
- the module casing can have a wall surrounding the vertical axis of the cell stack and at least one at least largely closed upper side on the
- the fluid supply device can be arranged on the side of the cell stack with the second end faces and the outlet openings can be arranged on the upper side.
- the coolant can be fed into the battery module from the bottom and can exit through the outlet openings on the top. In this way, even if a battery cell is vented, venting gas escaping can connect directly to the coolant and exit through the nearby outlet openings on the top of the battery module, which ensures increased safety during operation of the battery module.
- the outlet openings can have a cross section such that a higher pressure loss for the cooling liquid occurs at the outlet openings than at the inlet openings, and in a further course of a flow of the cooling liquid between the inlet openings and the outlet openings.
- a channel with a generous cross-section can be formed in the battery module as an extension of a short connecting piece of the fluid supply device, through which the coolant can flow over the entire surface without significant throttling, with the even distribution in the battery module then without additional guide devices by the throttles with small cross-section running and appropriately arranged outlet openings takes place.
- filling bodies can be arranged inside the module casing, in particular in the area of the fluid supply device and/or a fluid discharge.
- the quantity of coolant inside the battery module can thus be reduced by filling bodies introduced into the cavities, for example in the form of closed-pore foams, hollow plastic bodies and the like.
- a cell connector unit and/or a cover can be arranged on the side of the cell pack with the first end faces of the battery cells, it being possible for the fluid supply device to be integrated into the cell connector unit and/or the cover. In this way, a cell connector unit which is generally present anyway and which combines the metal cell connectors in one component can be used for distributing the coolant.
- plastic foils of a top layer and a bottom layer of the cell connector unit can be glued or welded together.
- the two layers, which enclose the cell connectors from above and below, can be provided in the middle part with half-shells designed as semicircular embossings, which form the distribution line, which in turn can be provided with inlet openings on the underside for the coolant to enter the battery module.
- the insulation cover which is usually already present and is made from stamped and formed plastic films using so-called blister technology and placed directly on the cells, the short-circuits between the voltage-carrying cell housings and the
- a distribution line can be formed by means of a semi-circular blister part closed on the back as the upper part, which is applied to the flat lower part of the insulating cover by thermal welding, into the open end of which a
- connection piece can be introduced for supplying the cooling liquid.
- the coolant is then discharged through inlet openings made in the underside of the insulating cover in the area of the distributor line.
- the fluid supply device can be arranged on one of the end faces between opposing electrical connection elements of a battery cell, in particular in the middle between them.
- the fluid supply device can also include the distribution line
- inlet openings wherein the inlet openings are arranged distributed in the stacking direction over the battery cells.
- connecting elements lying opposite one another can be supplied with cooling liquid by the distribution line lying between them, so that particularly effective cooling is ensured.
- the fluid supply device can be arranged on the module casing near one of the end faces.
- the fluid supply device can have the distribution line with inlet openings, the inlet openings being distributed over the number of battery cells in the stacking direction. It is also advantageous to spray the connection elements of the battery cells, which are subject to high thermal loads, with cooling liquid from the side through distribution lines integrated into connecting plates as side parts of the module casing drains downwards.
- the fluid supply device can be arranged on the module casing on the first end faces at the level of the electrical connection elements.
- the fluid supply device can have the distribution line with inlet openings, the inlet openings being distributed in the stacking direction of the battery cells.
- the connection elements can serve as an impact element when the cooling liquid is supplied.
- the cooling liquid can in particular be directed onto the connection elements from the side. In this way, the connection elements of the battery cells can be supplied with coolant and cooled particularly effectively.
- a battery is proposed with at least one directly cooled battery module and with a battery housing with a fluid-tight lower housing part, the battery housing having a fluid inlet and at least one
- the fluid inlet is fluidically connected to a fluid supply device of the at least one battery module.
- the battery housing has at least one collection chamber for collecting the cooling liquid that has escaped freely from the at least one battery module.
- Coolant circuit are supplied again.
- a battery module only the battery housing itself has to be designed to be sealed, which is usually already done to shield the battery modules from environmental influences.
- the large number of battery modules does not have to be sealed, which reduces the costs, the weight and the installation space required for the battery according to the invention.
- the lower housing part can have integrated fluid ducts, in particular suction ducts, for removing the cooling liquid
- Openings are fluidly connected to the collection space.
- a particularly effective and space-saving recirculation of the coolant can be provided by channels integrated in the lower housing part, for example made of extruded parts, into which the cooling liquid enters via openings distributed over the entire surface of the lower housing part.
- the battery housing can have fluid guide elements arranged in a flat axis.
- Fluid guiding elements can be used to direct the cooling liquid to the collection openings or suction openings in a targeted manner and to prevent the cooling liquid from sloshing when the vehicle accelerates or is in an inclined position.
- filling bodies can be arranged in the interior of the battery housing between adjacent battery modules.
- the amount of cooling liquid located inside the battery housing lower part can be reduced by filling bodies introduced into the cavities, for example in the form of closed-pore foams, hollow plastic bodies and the like.
- the filling bodies can be formed from parts of the battery housing or the battery modules.
- the fluid inlet and the fluid outlet can be connected via a closed fluid circuit, which has at least one of a cooling device, a heat exchanger, and an air separator.
- a cooling device e.g., a heat exchanger
- an air separator can be arranged in the cooling liquid circuit in front of the pump, which works e.g. according to the centrifugal principle, air pot principle or labyrinth principle.
- a battery electronics unit in particular at least one
- the battery housing can have a module casing for the at least one battery module.
- the lower housing part can be designed as a collection space for the cooling liquid that has escaped freely from the battery module, with a housing bottom of the
- Lower housing part has openings for the entry of the cooling liquid into the collecting space.
- the battery cells can also be installed directly in the battery housing as a cell pack according to the so-called "cell-to-batt" design.
- the battery housing can thus have the module encapsulation or itself be designed as a module encapsulation.
- the coolant can be distributed in the cell stack by suitable devices, for example by spraying the top of the battery cells from the distribution line. After flowing around the battery cells, the coolant escapes from the cell pack into the lower part of the battery housing and is sucked off there as described above and fed back into the cooling circuit.
- the proposed solution can be used in batteries with known types of battery cells, such as pouch cells, prismatic hard case cells or
- the lower housing part can have fluid channels for discharging the coolant. After flowing around the battery cells, the cooling liquid can escape from the cell pack into the lower part of the battery housing and be sucked off there through the fluid channels and fed back into the cooling circuit. drawing
- Fig. 1 is an isometric view of a side member of a
- FIG. 3 shows a cross section through the battery module according to FIG. 2;
- FIG. 4 shows a longitudinal section through the battery module according to FIG. 2;
- FIG. 5 shows an enlarged detail of the longitudinal section according to FIG. 4;
- FIG. 6 shows a longitudinal section through a battery module according to another
- Embodiment of the invention with fluid channels in end plates on both sides of the battery cells of the battery module with cells overflowing and underflowing from cooling liquid;
- FIG. 7 is an isometric plan view of the battery module in its module enclosure of FIG. 6;
- FIG. 8 shows an isometric view from below of the module casing according to FIG.
- Fig. 9 is a schematic representation of a battery module according to an embodiment of the invention with a fluid supply device on a first end face of the
- Fig. 10 is a schematic representation of a battery module according to a further embodiment of the invention with a fluid supply device on a second end face of the
- Fig. 11 is a schematic representation of a battery module according to a further embodiment of the invention with a fluid supply device on a second end face of the
- FIG. 12 shows a side view of the battery module according to FIG. 11;
- Fig. 13 is a schematic representation of a battery module according to a further embodiment of the invention with a fluid supply device on a first end face of the
- FIG. 14 is a schematic representation of a battery module according to a further embodiment of the invention with a
- Fluid supply device on a second end face of the battery cells and outlet openings in the region of openings for electrical lines to be routed laterally in the module casing with the side element of the module casing removed;
- FIG. 15 shows a schematic representation of a battery module according to a further exemplary embodiment of the invention with a
- Fluid supply device on an underside of the battery module and outlet openings for the cooling liquid on an upper side of the module casing with the side element of the module casing removed;
- FIG. 16 shows a schematic representation of a battery module according to a further exemplary embodiment of the invention with a
- Fluid supply device on a second end face of the battery cells and outlet openings for the cooling liquid on an upper side of the module casing, filling bodies being arranged in the region of the fluid discharge with the side element of the module casing removed;
- FIG. 17 shows the battery module according to FIG. 10 with a schematic indication of venting gas escaping through the outlet openings of a deflated battery cell;
- FIG. 18 shows a schematic representation of a battery according to an exemplary embodiment of the invention with four battery modules with outlet openings for cooling liquid which is collected in a battery housing lower part and discharged through a fluid outlet with the side wall of the battery housing removed;
- FIG. 19 shows the battery according to FIG. 18 with two fluid outlets with the side wall of the battery housing removed;
- FIG. 20 shows a schematic representation of a battery according to a further exemplary embodiment of the invention with battery modules with outlet openings for cooling liquid, which enters the fluid channels integrated in the lower housing part via openings distributed in the surface of the lower housing part and is discharged therethrough with the side wall of the battery housing removed;
- FIG. 21 shows a schematic representation of a battery according to a further exemplary embodiment of the invention, with additionally introduced fluid guiding elements guiding the cooling liquid to the openings of the fluid channels integrated in the lower housing part and preventing sloshing of the cooling liquid with the side wall of the battery housing removed;
- FIG. 22 shows a schematic representation of a battery according to a further exemplary embodiment of the invention, in which case additional filler bodies reduce the amount of cooling liquid in the lower part of the housing with the side wall of the battery housing removed;
- FIG. 23 shows a schematic illustration of a battery according to a further exemplary embodiment of the invention with a closed fluid circuit and with the side wall of the battery housing removed;
- 24 shows a schematic illustration of a battery according to a further exemplary embodiment of the invention with an integrated battery electronics unit with the side wall of the battery housing removed;
- 25 shows a schematic representation of a battery according to a further exemplary embodiment of the invention with battery cells of a cell pack installed directly in the battery housing and with the side wall of the battery housing removed;
- 26 shows an exploded view of a battery module according to an exemplary embodiment of the invention with a channel structure arranged between the battery cells;
- FIG. 27 shows an exploded view of a battery module according to a further exemplary embodiment of the invention with an adhesive mat arranged between the battery cells;
- FIG. 28 shows an exploded view of a battery module according to a further exemplary embodiment of the invention with a channel structure with blind channels arranged between the battery cells;
- 29 shows an isometric view of a battery module according to a further exemplary embodiment of the invention when a cooling liquid distribution line is fitted;
- FIG. 30 shows the battery module according to FIG. 29 with a distribution line attached
- FIG. 31 shows a longitudinal section through the battery module according to FIG. 30;
- FIG. 32 shows an enlarged detail of the longitudinal section according to FIG. 31;
- FIG. 33 shows a cross section through the battery module according to FIG. 30 in the region of the channel structure
- FIG. 35 shows an isometric view of a battery module according to a further exemplary embodiment of the invention when the cover with distribution line according to FIG. 34 is put on;
- FIG. 36 shows the battery module according to FIG. 35 with the cover and distributor line in place;
- FIG. 37 shows a longitudinal section through the battery module according to FIG. 36;
- FIG. 38 shows a cross section through the battery module according to FIG. 36 in the area of the channel structure
- 39 is an isometric view of a cell connector unit with manifold in an exploded view
- FIG. 40 shows an isometric view of a battery module according to a further exemplary embodiment of the invention when the cell connector unit with distribution line according to FIG. 39 is placed on it;
- FIG. 41 shows the battery module according to FIG. 40 with a cell connector unit fitted with a distribution line
- FIG. 42 shows a longitudinal section through the battery module according to FIG. 41.
- FIG. 43 shows a cross section through the battery module according to FIG. 41 in the
- FIGs 1 to 5 show a first embodiment of a battery module 100 according to the invention.
- the battery modules 100 are shown with so-called prismatic hard case cells 10 .
- Figure 1 shows an isometric view of a side element 43 of a module casing 40 with a distributor line 28 designed as an attachment 98 with connecting pieces 84 in an exploded view according to an exemplary embodiment of the invention
- Figure 2 shows an isometric view of a battery module 100 with the side elements 43 of the module casing 40 with the distributor lines 28 according to FIG. 1 with end plates 39, 41 of the module casing 40 arranged on both sides of the cell stack 38.
- FIG. 3 shows a cross section through the battery module 100 according to FIG. 2
- FIG. 4 shows a longitudinal section through the battery module 100.
- Figure 5 shows an enlarged detail of the longitudinal section according to Figure 4.
- the battery module 100 has a plurality of battery cells 10 arranged within the module casing 40, the module casing 40 enclosing the plurality of battery cells 10 at least in regions.
- the battery cells 10 have a vertical axis 20 and first and second end faces 16 , 18 spaced apart from one another in the direction of the vertical axis 20 .
- the battery cells 10 are arranged one after the other as a cell stack 38 in a stacking direction 26 transversely to the vertical axis 20 .
- the battery cells 10 each have two electrical connection elements 12 , 14 on the first end face 16 , which each form a positive pole or negative pole and which are connected in series via cell connectors 30 .
- the cell connectors 30 are not shown for reasons of clarity. However, cell connectors 30 are shown in the further exemplary embodiment in FIG. 7 and would also be installed in a similar way in the exemplary embodiment shown in FIGS.
- Power supply lines (not shown) to the free connection elements 12 , 14 of the edge cells are led out of the module casing 40 at the ends of the cell stack 38 .
- the cell voltages are each tapped off at the connection elements 12 , 14 via separate electrical lines (not shown) and led out separately from the module casing 40 .
- the directly cooled battery module 100 has a fluid supply device 50 with two distributor lines 28 with a plurality of inlet openings 54, which, during normal operation, directs a cooling liquid 60 onto the battery cells 10, in particular onto the connection elements 12, 14 of the battery cells 10, and thus sprays the heat locally of arising in the battery cell 10 can advantageously dissipate. Furthermore, the battery module 100 has one or more outlet openings 56 for the free outlet of the cooling liquid 60 from the module casing 40 and the cell stack 38 into the area surrounding the module casing 40 . The coolant 60 emerging from the battery modules 100 into a battery housing (not shown) can subsequently be collected there or sucked off and fed back to a coolant circuit.
- the bushings to the electrical lines therefore do not have to be sealed.
- the module casing 40 no longer needs to be sealed on all sides. Only the battery case needs to be sealed to collect the cooling liquid 60 .
- a level or storage container for the coolant 60 can be omitted.
- the lower part of the battery housing assumes this function.
- the flow of the cooling liquid 60 through the battery modules 100 as well as through the batteries 200 constructed therewith is indicated in each case with arrows in the figures.
- the module casing 40 is in the form of a wall running around the vertical axis 20 of the cell stack 38 and can in particular be in the form of a band or frame.
- the module enclosure 40 has a top 42 (not shown) and a bottom 44 .
- the outlet openings 56 are arranged on the underside 44 in the exemplary embodiment in FIGS.
- a fluid drain 52 is thus arranged on the underside 44 of the module casing 40 in this exemplary embodiment.
- the inlet openings 54 for the cooling liquid 60 are arranged facing the first end faces 16 in such a way that the cooling liquid 60 emerges from the inlet openings 54 onto the first end faces 16 and can thus preferably cool the first end faces 16 and the connection elements 12, 14 arranged there.
- the outlet openings 56 for discharging the cooling liquid 60 are arranged on the opposite side of the cell stack 38 with respect to the vertical axis 20 .
- the fluid supply device 50 preferably has at least one inlet opening 54 per electrical connection element 12, 14 of the battery cells 10 and is in this way advantageously designed for a targeted distribution of the cooling liquid 60 over the first end face 16 of the battery cells 10 in the cell stack 38.
- the coolant 60 which is sprayed onto the battery cells 10 from above, runs down the end plates 39, 41 and emerges on the underside 44 of the module casing 40 without collecting inside the module.
- no additional piping is required in the battery module 100 for conducting the cooling liquid 60 .
- the fluid supply device 50 preferably has at least one inlet opening 54 per electrical connection element 12, 14 of the battery cells 10 and is in this way advantageously designed for a targeted distribution of the cooling liquid 60 over the first end face 16 of the battery cells 10 in the cell stack 38.
- the coolant 60 which is sprayed onto the battery cells 10 from above, runs down the end plates 39, 41 and emerges on the underside 44 of the module casing 40 without collecting inside the module.
- no additional piping is required in the battery module 100 for conducting
- Fluid supply device 50 so distribute the cooling liquid 60 via the electrical connection elements 12, 14 of the battery cells 10 in the cell pack 38 in a targeted manner.
- the distribution line 28 is formed in the side element 43 in that the side element 43 has inlet openings 54 distributed in the stacking direction 26 of the cell stack 38 and a semicircular attachment 98 is arranged on the side element 43 from an outside of the module casing 40 over the inlet openings 54, which has a channel of the distribution line 28 forms.
- the cooling liquid 60 is supplied to the distribution line via a connecting piece 84 .
- the inlet for the cooling liquid 60 through the inlet openings 54 can take place via bores in the side elements 43 (in the case of spraying) as well as oblong holes (in the case of an inflow).
- turbulence occurs in the inlet around the connection elements 12, 14, as a result of which an ideal heat transfer on the first end face 16 of the battery cell 10 is achieved.
- the flow in the exemplary embodiment takes place from both sides, the stagnation point is in the middle and the outflow takes place via an integrated outflow channel 58 in the two end plates 39,
- the temperature difference over the height of the battery cell 10 can thus be significantly lower compared to the current state of the art, for example with a value of less than 15 K instead of the previous greater than 20 K.
- the fluid supply device 50 is arranged on the module casing 40 on the first end faces 16 at the level of the electrical connection elements 12, 14.
- the connection elements 12, 14 can be sprayed or flowed on from the side and serve as an impact element for the cooling liquid and thus contribute to an even distribution of the cooling liquid 60 around the connection elements 12, 14 and on the first end face 16 of the cell stack 38.
- the cross section in FIG. 3 shows particularly well how the connection elements 12, 14 of the battery cells 10 are sprayed or flowed against by the cooling liquid 60.
- the cooling liquid 60 can be distributed over the first end face 16 of the cell stack 38 and can flow off via channels 58, which in this exemplary embodiment are formed in the end plates 39, 41. At the lower end of the fluid channels 58, on the underside 44 of the module casing 40, the cooling liquid 60 can escape freely through the outlet openings 56.
- the channel structure 66 of the liquid-permeable layer 62 between the battery cells 10 is formed with blind channels 70 in this exemplary embodiment.
- the cooling liquid 60 is essentially stationary in the blind passages 70 and is distributed at most by convection.
- FIG. 1 to 5 can be further simplified by only having a lateral fluid supply device 50 and the outflow of the cooling liquid 60, again integrated as a fluid channel 58 in the end plates 39, 41, at the end of the overflow of the battery cells 100 from the battery module 100 takes place out into a lower housing part 212 designed as a floor pan.
- Figures 6 to 8 show another embodiment of the invention.
- the battery modules 100 are shown with so-called prismatic hard case cells 10 .
- the cooling liquid 60 occurs in one
- the coolant is distributed on the first end face 16 60 on the first end face 16 with the electrical
- connection elements 12 and cell connectors not shown.
- heat can be dissipated particularly favorably by flat overflowing of the electrical connection elements 12 on the first end face 16 without a fluid channel specifically designed for this purpose, since the heat loss occurs to a large extent in the area of the connection elements and through
- a filling element for example in the form of a blister, can advantageously be arranged in the area between the electrical connection elements along the cell stack, so that the cooling liquid essentially flows over the electrical connection elements on both sides of the filling element.
- a packing can nevertheless be arranged above them.
- the filling body can expediently have suitable cutouts at the location of the venting openings, through which escaping gas can flow out. The filling body promotes a suitable flow of the coolant over the electrical connection elements for the greatest possible heat dissipation at the point of origin.
- the packing reduces the free volume in the battery module, so that a smaller
- cooling liquid 60 then flows off via the fluid channel 58 in the opposite end plate 41 to the underside 44 of the module casing 40 .
- the cooling liquid 60 passes through one or more outlet openings 56, in this example through one
- Outlet opening 56 freely in the environment of the battery module 100 from. It can be advantageous here if the outlet opening 56 is arranged close to the end plate 41 with the at least one inlet opening 54 .
- the entry openings 54 in the end plate 39 can optionally be arranged from the underside of the end plate 39 and/or from the underside 44 of the module casing 40 . As a result, the supply and discharge of the cooling liquid 60 to the battery module 100 can be designed in a particularly favorable manner.
- An exemplary embodiment that is further improved compared to the exemplary embodiments shown in FIGS. 1 to 8 can have a porous foam mat or a rubber-like press mat with channels 68 as a liquid-permeable layer 62 between the battery cells 10 (as in the exemplary embodiments shown in FIGS. 26 and 27), which at
- Electrolyte gas on the first end face 16 directly into the cooling liquid 60 there is an evaporative cooling between the defective battery cell 10 and the two neighboring cells 10 and the coolant-loaded first end face 16 of the defective battery cell.
- An undesirably strong rise in temperature in the two adjacent cells 10 to the defective battery cell 10 can be prevented in this way.
- a thermal propagation in the battery module 100 and the overall battery 200 can thus advantageously be prevented.
- the electrolyte gas can combine with a part of the vaporized cooling liquid 60 and be safely discharged via a venting mechanism outside the battery module 100 in the battery 200 .
- a gas mixture created by combining electrolyte gas and cooling liquid 60 is usually far less combustible than pure electrolyte gas.
- a direct ignition above the battery cells 10 by the coolant 60 can also be prevented in this way. Sparking, which can ignite the electrolytic gas, can also be prevented.
- the coolant 60 can extinguish the defective, ignited battery cell 10 . The harmful process can thus come to a standstill.
- FIGS. 9 to 17 show different designs of battery modules 100 in a module casing 40. For the sake of visibility, the side element of the module casing 40 facing the viewer has been removed in FIGS. 9 to 11 and 13 to 17.
- FIGS. 9 to 17 and 18 to 24 show embodiments of module casings 40 or battery modules 100 with module casings 40 which have end plates 39 , 41 , side elements 43 and a bottom 44 and a top 42 .
- this is only intended to represent one possible embodiment of a module encapsulation 40 .
- a battery module 100 can also be designed as a module casing 40 without a bottom 44 and/or without a top 42 only with a frame enclosing the battery cells 10 and made of end plates 39, 41 and side elements 43.
- a tension belt can also be used as an option.
- Figure 9 shows a schematic representation of a battery module 100 according to an exemplary embodiment of the invention with a fluid supply device 50 on a first end face 16 of the battery cells 10 and outlet openings 54 for the cooling liquid 60 on an underside 44 of a module casing 40.
- the battery module 100 has a plurality of battery cells 10 arranged within the module casing 40, the module casing 40 enclosing the plurality of battery cells 10 at least in regions.
- the battery cells 10 have a flat axis 20 and first and second end faces 16 , 18 spaced apart from one another in the direction of the flat axis 20 .
- the battery cells 10 are arranged one after the other as a cell stack 38 in a stacking direction 26 transversely to the vertical axis 20 .
- the battery cells 10 each have two electrical connection elements 12 , 14 which are labeled “+” and and which are connected in series via cell connectors 30 .
- Two power supply lines 32, 34 to the free connection elements 12, 14 of the edge cells are led out of the module casing 40 at the ends of the cell stack 38.
- the cell voltages are each tapped off via separate electrical lines 36 at the connection elements 12, 14 and led out separately from the module casing 40.
- the directly cooled battery module 100 has a fluid supply device 50 with a distributor line 28 with a plurality of inlet openings 54, which in normal operation directs a cooling liquid 60 onto the battery cells 10, in particular onto the connection elements 12, 14 of the battery cells 10 and thus sprays the heat locally of arising in the battery cell 10 can advantageously dissipate. Furthermore, the battery module 100 has a plurality of outlet openings 56 for the free outlet of the cooling liquid 60 from the module casing 40 and the cell stack 38 . The coolant 60 escaping from the battery modules 100 into a battery housing can subsequently be collected there or sucked off and fed back to a coolant circuit.
- the bushings 45 to the electrical lines 32, 34, 36 therefore do not have to be sealed.
- the module casing 40 no longer needs to be sealed on all sides. Only the battery case needs to be sealed to collect the cooling liquid 60 .
- a level or storage container for the coolant 60 can be omitted. The lower part of the battery housing assumes this function.
- the module casing 40 is in the form of a wall running around the vertical axis 20 of the cell stack 38 and can in particular be in the form of a band or frame.
- the module enclosure 40 has a top 42 and a bottom 44 .
- the outlet openings 56 are arranged on the underside 44 in the exemplary embodiment in FIG. In this exemplary embodiment, the fluid discharge 52 is therefore arranged on the underside 44 of the module casing 40 .
- the inlet openings 54 for the cooling liquid 60 are arranged facing the first end faces 16 in such a way that the cooling liquid 60 emerges from the inlet openings 54 onto the first end faces 16 and can thus preferably cool the first end faces 16 and the connecting elements 12, 14 arranged there.
- Cooling liquid 60 are arranged on the opposite side of the cell stack 38 with respect to the vertical axis 20 .
- the fluid supply device 50 preferably has at least one inlet opening 54 per electrical connection element 12, 14 of
- Battery cells 10 and is advantageously formed in this way for a targeted distribution of the coolant 60 over the first end face 16 of the battery cells 10 in the cell stack 38 .
- the fluid supply device 50 can thus selectively distribute the coolant 60 via the electrical connection elements 12, 14 of the battery cells 10 in the cell stack 38.
- the fluid supply device 50 can advantageously have a nozzle arrangement which sprays the cooling liquid 60 onto the cell stack 38 .
- fluid channels 58 are arranged between the battery cells 10 along the side walls 22, 24 of the battery cells 10 between the first end face 16 and the second end face 18 of the battery cells 10 in the cell stack 38, so that the cooling liquid 60 that is supplied flows from the inlet openings 54 via the
- Connection elements 12, 14 of the battery cells 10 can reach the outlet openings 56 of the module casing 40 via the fluid channels 58.
- FIG 10 is a schematic representation of a battery module 100 according to a further embodiment of the invention with a
- Fluid supply device 50 shown on the second end face 18 of the battery cells 10 and outlet openings 54 for the cooling liquid 60 on the top side 42 of the module casing 40 .
- the inlet openings 54 are arranged in a targeted manner towards the second end faces 18 in such a way that the cooling liquid 60 from the inlet openings 54 impinges on the second end faces 18, while the outlet openings 56 are arranged on the opposite side of the cell stack 38 with respect to the hole axis 20.
- the cooling liquid 60 that has entered rises in the fluid channels 58 between the battery cells 10 and occurs at the top
- FIG. 11 shows a schematic representation of a battery module 100 according to a further exemplary embodiment of the invention with a fluid supply device 50 which is arranged on the side of the cell stack 38 with the second end faces 18 in relation to the vertical axis 20 .
- the outlet openings 56 are arranged laterally in the module casing 40 at a height of a vertical axis 20 between the first and second end faces 16, 18 of the battery cells 10 in the cell stack 38.
- FIG. 12 shows a side view of the battery module 100 in which the outlet openings 56 can be seen.
- the outlet openings 56 are preferably distributed over the circumference of the module casing 40 .
- the cooling liquid 60 shown in dotted lines in Figure 11, rises to a liquid level which is the height of the
- FIG. 13 shows a schematic representation of a battery module 100 according to a further exemplary embodiment of the invention with a fluid supply device 50 which is arranged on the side of the cell stack 38 with the first end faces 16 in relation to the vertical axis 20 .
- the outlet openings 56 are at a height of the vertical axis 20 between the first and second
- End faces 16, 18 of the battery cells 10 in the cell stack 38 are arranged laterally in the module casing 40.
- the exemplary embodiment consequently differs from the exemplary embodiment in FIGS. 11 and 12 in that the coolant 60 is supplied from above via the connection elements 12 , 14 of the battery cells 10 .
- the liquid level in the battery module 100 permanently reaches the fleas of the outlet openings 56, since this is the only way for the cooling liquid 60 to drain off.
- FIG 14 is a schematic representation of a battery module 100 according to a further embodiment of the invention with a
- the supplied cooling liquid 60 rises in the fluid channels 58 between the battery cells 10 until it reaches the height of the Bushings 45 of the power supply lines 32, 34 reached and exits defined through the bushings 45 into the environment.
- the module encapsulation 40 does not need to be tightly formed as a result.
- Figure 15 shows a schematic representation of a battery module 100 according to a further embodiment of the invention with a
- the module casing 40 has a wall surrounding the vertical axis 20 of the cell stack 38 and at least one, at least largely closed top side 42 on the side of the cell stack 38 with the first end faces 16 .
- the fluid supply device 50 which is designed as a short connector without a distribution line, but preferably with a relatively large cross section, is arranged on the side of the cell stack 38 with the second end faces 18.
- the outlet openings 56 are arranged in the upper side 42 of the module casing 40 . Alternatively, the outlet openings 56 could be arranged at a level between the first and the second end face 16, 18 of the cell stack 38, as in the exemplary embodiments in FIGS.
- the outlet openings 56 advantageously have a cross section such that a higher pressure loss for the cooling liquid 60 occurs at the outlet openings 56 than at the inlet opening 54, which preferably has a relatively large cross section.
- the outlet openings 56 can thus be designed as throttle openings. In this way, a defined exit of the cooling liquid 60 and a uniform distribution of the cooling liquid 60 can be achieved.
- the outlet openings 56 can also be located halfway between the first and second end faces 16, 18 of the
- Battery cells 10 can be arranged.
- FIG. 16 shows a schematic representation of a battery module 100 according to a further exemplary embodiment of the invention with a fluid supply device 50 on a second end face 18 of the battery cells
- filling bodies 46 being arranged inside the module casing 40 in the region of the fluid discharge 52.
- the filling bodies 46 which can be made of hollow material, for example, reduce the amount of cooling liquid inside the module.
- FIG 17 shows a battery module 100 as shown in Figure 10, with a schematic indication of venting gas escaping through the outlet openings 56 of a deflated battery cell 10.
- a larger volume of gas the so-called venting gas
- This gas can combine with the cooling liquid 60 and escape from the module casing 40 through the outlet openings 56 for the cooling liquid 60 arranged in the immediate vicinity. In this way, an increased gas pressure can advantageously be prevented from forming in the battery module 100 .
- FIGS. 18 to 25 show different designs of batteries 200 with a battery housing 210.
- the side wall of the battery housing 210 facing the viewer has been removed in each of the figures.
- Figure 18 shows a schematic representation of a battery 200 according to an embodiment of the invention with four battery modules 100 with outlet openings 56 for cooling liquid 60, which is collected in a battery housing lower part 212 and discharged through a fluid outlet 204.
- the battery 200 has a battery housing 210 with an upper housing part 214 and a fluid-tight lower housing part 212 .
- the lower housing part 212 can be designed as a trough, for example, which is closed with a flat upper housing part 214 as a cover.
- the two housing parts 212, 214 can be tightly connected, for example, via a housing flange 216.
- the battery housing 210 also has a fluid inlet 202 and at least one fluid outlet 204 for cooling liquid 60 , the fluid inlet 202 being fluidically connected to a fluid supply device 50 of the battery module 100 .
- the battery housing 210 has at least one collection space 206 for collecting the cooling liquid 60 that has escaped freely from the battery modules 100 .
- the cooling liquid 60 can be sucked off via the fluid outlet 204 and fed to a cooling circuit, which is preferably designed to be closed. While in direct-cooled batteries of the prior art
- the cooling liquid is fed through corresponding line systems to each individual battery module 100 and removed from there again, the return lines are omitted in the embodiment according to the invention, since the cooling liquid 60 exits from the battery modules 100 into the battery housing lower part 212 and is collected or sucked off there and fed back into the cooling circuit becomes.
- FIG. 19 shows such a battery 200 with two fluid outlets 204, so that the cooling liquid 60 can also be discharged and/or sucked off when the vehicle is in an inclined position, or when there are transverse and/or longitudinal accelerations.
- Figure 20 shows a schematic representation of a battery 200 according to a further exemplary embodiment of the invention, having battery modules 100 with outlet openings 56 for cooling liquid 60, which, via openings 222 distributed in the surface of the housing base 218 of the housing lower part 212, flow into the fluid channels 220 enters and is discharged via it.
- the housing base 218 which is formed from extruded parts, for example, has integrated fluid channels 220 , in particular suction channels for removing the coolant 60 .
- the fluid channels 220 are fluidically connected to the collection space 206 via openings 222 and can be distributed over the entire area of the housing floor 218 .
- the cooling liquid 60 can be sucked off via the fluid channels 220, for example.
- Figure 21 shows a schematic representation of a battery 200 according to a further exemplary embodiment of the invention, with fluid guide elements 224 additionally arranged in a flat axis 230 guiding the cooling liquid 60 to the openings 222 of the fluid channels 220 integrated in the lower housing part 212 and preventing the cooling liquid 60 from sloshing.
- the cooling liquid 60 can thus be directed to the openings 222 in a targeted manner. Sloshing of the coolant 60 that has escaped into the lower housing part 212 due to acceleration of the vehicle can be effectively suppressed by the fluid guide elements 224 .
- FIG. 22 shows a schematic representation of a battery 200 according to a further exemplary embodiment of the invention, in which case additional filler bodies 226 reduce the amount of cooling liquid in the lower housing part 212 .
- the filling bodies 226 can be formed from parts of the battery housing 210 or the battery modules 100 .
- FIG. 23 shows a schematic representation of a battery 200 according to a further exemplary embodiment of the invention with a closed fluid circuit 232.
- the fluid inlet 202 and the fluid outlet 204 are connected via a closed fluid circuit 232 which has at least one of a cooling device 234 , a heat exchanger and an air separator 236 .
- the cooling liquid 60 is sucked off via fluid channels 220 integrated in the lower housing part 212 and fed to the closed fluid circuit 232 via the fluid outlet 204 .
- the fluid circuit 232 with pump 240 and cooling device 234, for example an ambient air cooler with a fan, or a heat exchanger operated with evaporating refrigerant from the vehicle air conditioning system, the air is separated in an air separator 236, for example according to the centrifugal principle, air pot principle or
- the battery housing 210 is used to store the coolant, so that an additional level or storage container is not required.
- FIG 24 shows a schematic representation of a battery 200 according to a further embodiment of the invention with an integrated battery electronics unit 228. Scope of the battery electronics such as battery management system (BMS),
- BMS battery management system
- FIG. 25 shows a schematic representation of a battery 200 according to a further exemplary embodiment of the invention with battery cells 10 of a cell pack 38 installed directly in the battery housing 210 .
- the battery housing 210 has a module casing 40 for the at least one battery module 100 .
- the lower housing part 212 is used as a collection space 206 for the freely exiting battery module 100
- Cooling liquid 60 is formed, with the lower housing part 212 having openings 222 for the cooling liquid 60 to enter the collecting space 206 .
- Fluid channels 220 in the lower housing part 212 are used to drain the cooling liquid 60.
- the cells built directly into the housing are sprayed from the first end face 16 of the battery cells 10 through a distributor line 28 with cooling liquid 60, which flows down and between the side walls 22, 24 of the battery cells 10 and then over the area of the housing base 218 distributed openings 222 in the housing base
- integrated fluid channels 220 enters and is sucked off.
- FIG. 26 to 35 further design examples of different battery modules 100 according to the invention with so-called prismatic flard case cells 10 are shown.
- the battery modules 100 have a basically similar structure.
- the battery cells 10 are glued to one another and to the pressure plates arranged at the two ends of the cell stack 38 as end plates 39, 41, with adhesive mats or adhesive plates 62 being arranged in the spaces between the battery cells 10, which are usually used at the same time to compensate for length tolerances and to compensate for changes in cell thickness serve the charging or aging status.
- the end plates 39, 41 are connected to one another as side elements 43 after the cell stack 38 has been pressed axially to the desired length, for example via connecting plates welded on to the side.
- the battery cells 10 are electrically interconnected and the current is fed in and removed by welded-on cell connectors 30.
- Devices for measuring the cell voltage and for so-called balancing, the charge equalization between the individual battery cells 10 and a cover of the cell arranged above the cell connectors 30, are not shown battery module 100.
- the cooling liquid 60 can be supplied, for example, through a distributor line 28 which can be provided with inlet openings 54 and can be arranged above the battery cells 10 .
- Figure 26 shows an exploded view of a battery module 100 according to an embodiment of the invention with a channel structure 66 arranged between the battery cells 10.
- the battery module 100 has eight prismatic hard case cells 10 whose connection elements 12 , 14 are arranged on the first end face 16 of the battery cells 10 .
- Liquid-permeable layers 62 designed as a channel structure 66 are arranged between the battery cells 10 and are provided with channels 66 for guiding the cooling liquid 60 between the battery cells 10 .
- the layers 62 can be glued to the side walls 22, 24 of the battery cells 10, for example.
- the module casing 40 comprises two stable end plates 39, 41 on both end sides of the battery module 100, which can apply the contact pressure required for the operation of the battery cells 10 to the battery cells 10.
- the two end plates 39, 41 are connected via two opposite side elements 43 and can in particular be screwed or welded.
- the channel structure 66 with channels 68 running from one end face 16 to the other end face 18 of the battery cells 10 in the cell stack 38 is arranged parallel to the vertical axis 20 , the channels 68 being continuous over a height of the battery cell 10 .
- FIG. 27 shows an exploded view of a battery module 100 according to a further exemplary embodiment of the invention with an adhesive mat 64 arranged between the battery cells 10 .
- a liquid-permeable layer 62 in particular a porous adhesive mat 64 , is at least partially arranged between the battery cells 10 in the direction of the vertical axis 20 .
- the adhesive mat 64 can, for example, be made of porous material (open-pored foam mat, fleece and the like) which soaks up cooling liquid, cools the side walls 22, 24 of the battery cells 10 and emerges freely on the underside 44.
- the cooling liquid 60 can cushion thermal load peaks through its heat capacity and thus prevent thermal propagation in the cell stack 38 in particular after an exothermic reaction of a battery cell 10 .
- the adhesive mat 64 which is preferably designed to be self-adhesive, can be glued to the side walls 22, 24 of the battery cells 10 in each case.
- the adhesive mat 64 is designed with a suitable porosity, which allows the coolant 60 to seep between the cells, so that the adhesive mat 64 is saturated with the coolant 60 during normal operation.
- FIG. 28 shows an exploded view of a battery module 100 according to a further exemplary embodiment of the invention with a channel structure 66 with blind channels 70 arranged between the battery cells 10 .
- liquid-permeable layers 62 in the form of a channel structure 66 are arranged between the battery cells 10, as in the exemplary embodiment in FIG.
- the cooling liquid 60 is routed between the battery cells 10 via the blind passages 70, since the blind passages 70 can fill with standing cooling liquid 60, which in turn can cushion thermal load peaks and prevent thermal propagation in the cell stack 38.
- FIG. 29 shows an isometric view of a battery module 100 according to a further exemplary embodiment of the invention when a coolant distribution line 28 is being fitted.
- the distributor line 28 as a fluid supply device 50 is arranged on one of the end faces 16, 18 between opposite electrical connection elements 12, 14 of a battery cell 10, in particular in the middle.
- the distributor line 28 On its side facing the first end face 16 of the battery cells 10 , the distributor line 28 has inlet openings 54 for the coolant 60 to exit from the distributor line 28 into the interior of the battery module 100 .
- the inlet openings 54 are distributed over the battery cells 10 in the stacking direction 26 so that a uniform wetting of the first end faces 16 of the battery cells 10 with coolant 60 can be ensured.
- the inlet openings 54 are distributed in the stacking direction 26 of the battery cells 10 . In this way, in particular, the connection elements 12, 14 can serve as an impact element when the cooling liquid 60 is supplied.
- FIG. 31 shows a longitudinal section through the battery module 100 according to FIG. 30, while FIG. 32 shows an enlarged detail of the
- the cooling liquid 60 flows through the fluid supply device 50 designed as a distribution line 28 into the battery module 100 and exits through the inlet openings 54 onto the first end face 16 of the battery cells 10 .
- the cooling liquid 60 can be distributed on the first end face 16 and can flow through fluid channels 58 between the battery cells 10 to the outlet openings 56 on the underside 44 of the battery module 100 .
- the fluid channels 58 can be formed, for example, as channels 68 in the channel structure 66 shown in Figure 26, which as a liquid-permeable layer 62 between the side walls 22, 24 of
- Battery cells 10 is arranged.
- FIG. 33 shows a cross section through the battery module 100 according to FIG. 30 in the area of the channel structure 66 . In cross section it can be seen how the coolant 60 from the distribution line 28 through the
- Inlet openings 54 flows onto the first end face 16 of the battery cells 10 and can be distributed there on the end face 16 on both sides to the connection elements 12, 14. In this way, the end face 16 and the connection elements 12, 14 can be cooled particularly effectively.
- the cooling liquid 60 can then flow downward via the channels 68 of the channel structure 66 to the outlet openings 56 of the battery module 100 and can freely exit on the underside of the battery module 100 .
- Figure 34 shows an isometric view of a cover 78 with distributor line 28 in an exploded view
- Figure 35 shows an isometric view of a battery module 100 when the cover 78 with distributor line 28 is fitted according to Figure 34
- Figure 36 shows the battery module 100 with cover 78 in place with distributor line 28 is shown.
- the cover 78 serves to insulate the upper side 42 of the battery module 100 and is arranged on the side of the cell stack 38 with the first end faces 16 of the battery cells 10 .
- the cover 78 has openings 82 for the connection elements 12, 14 of the battery cells 10.
- the fluid supply device 50 is integrated into the cover 78 .
- a semicircular upper part 80 for channel formation is placed on the cover 78, which has a row of inlet openings 54 distributed over the stacking direction 26 of the battery module 100, and the distribution line 28 is thereby formed.
- the cooling liquid 60 is supplied to the distribution line 28 via a connecting piece 84 .
- FIG. 37 shows a longitudinal section through the battery module 100 according to FIG. 36
- FIG. 38 shows a cross section through the battery module 100 in the region of the channel structure 66.
- the cross section shows how the cooling liquid 60 flows from the distribution line 28 through the inlet openings 54 under the cover 78 onto the first end face 16 of the battery cells 10 and can be distributed there on the end face 16 to the connecting elements 12, 14 on both sides. In this way, the end face 16 and the connection elements 12, 14 can be cooled particularly effectively.
- the cooling liquid 60 can then flow downward via the channels 68 of the channel structure 66 to the outlet openings 56 of the battery module 100 and can freely exit on the underside of the battery module 100 .
- Figure 39 shows an isometric view of a cell connector unit 72 with distributor line 28 in an exploded view
- Figure 40 shows an isometric view of a battery module 100 when the cell connector unit 72 with distributor line 28 is put on and in Figure 41 the
- Battery module 100 is shown with attached cell connector unit 72 with distribution line 28 .
- the cell connector unit 72 is arranged on the side of the cell pack 38 with the first end faces 16 of the battery cells 10 and includes the individual cell connectors 30 for the electrical connection of the connection elements 12, 14 in order to connect the battery cells 10 in series and/or in parallel.
- the cell connectors 30 are used to transport electricity to and from the battery cells.
- the cell connector unit 72 can have additional electrical lines for tapping cell voltages for the
- the cell connector unit 72 in FIG. 39 consists of a base 74 and a top layer, which have recesses 94, 96 for receiving the cell connectors 30 and webs 90, 92 for fixing the cell connectors 30 in place.
- the fluid supply device 50 is integrated into the cell connector unit 72 .
- semicircular regions are formed as half-shells 86, 88 in the base 74 and the upper layer 76 in the stacking direction 26 of the cell stack 38 to form a channel.
- the half-shell 88 of the base 74 is distributed along the stacking direction 26
- FIG. 42 shows a longitudinal section through the battery module 100 according to FIG. 41
- FIG. 43 shows a cross section through the battery module 100 in the region of the channel structure 66.
- the cross section it can be seen how the coolant 60 from the distribution line 28 through the inlet openings 54 under the cell connector unit 72 to the first
- End face 16 of the battery cells 10 flows and can be distributed there on the end face 16 on both sides to the connection elements 12, 14. In this way, the end face 16 and the connection elements 12, 14 can be cooled particularly effectively.
- the cooling liquid 60 can then flow via the channels 68 of the channel structure 66 to the outlet openings 56 of the
- Battery module 100 drain down and emerge freely at the bottom of the battery module 100.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2351094A SE547985C2 (en) | 2021-03-10 | 2022-03-04 | Directly cooled battery module and battery with a directly cooled battery module |
| DE112022001407.5T DE112022001407B4 (de) | 2021-03-10 | 2022-03-04 | Direktgekühltes batteriemodul und batterie mit einem direktgekühlten batteriemodul |
| CN202280019517.8A CN116964830A (zh) | 2021-03-10 | 2022-03-04 | 直接冷却的电池模块和具有直接冷却的电池模块的电池 |
| US18/280,993 US20240170754A1 (en) | 2021-03-10 | 2022-03-04 | Directly cooled battery module and battery with a directly cooled battery module |
| GB2315464.4A GB2637678A (en) | 2021-03-10 | 2022-03-04 | Directly cooled battery module and battery with a directly cooled battery module |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021105861.9 | 2021-03-10 | ||
| DE102021105861.9A DE102021105861A1 (de) | 2021-03-10 | 2021-03-10 | Direktgekühltes batteriemodul und batterie mit einem direktgekühlten batteriemodul |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022189295A1 true WO2022189295A1 (de) | 2022-09-15 |
Family
ID=80780662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/055573 Ceased WO2022189295A1 (de) | 2021-03-10 | 2022-03-04 | Direktgekühltes batteriemodul und batterie mit einem direktgekühlten batteriemodul |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240170754A1 (de) |
| CN (1) | CN116964830A (de) |
| DE (2) | DE102021105861A1 (de) |
| GB (1) | GB2637678A (de) |
| SE (1) | SE547985C2 (de) |
| WO (1) | WO2022189295A1 (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116864861A (zh) * | 2023-08-24 | 2023-10-10 | 中宏科创新能源科技(浙江)有限公司 | 电池包及电子设备 |
| CN117393912A (zh) * | 2023-12-12 | 2024-01-12 | 中宏科创新能源科技(浙江)有限公司 | 全浸没式冷却箱及电池箱 |
| CN117936975A (zh) * | 2023-12-29 | 2024-04-26 | 浙江吉利控股集团有限公司 | 电池组件及具有其的车辆 |
| WO2024225550A1 (ko) * | 2023-04-28 | 2024-10-31 | 인셀(주) | 함체와 통합된 액침 냉각 방식 배터리 시스템 |
| EP4418443A4 (de) * | 2022-12-26 | 2025-01-15 | Lg Energy Solution, Ltd. | Tauchgekühltes batteriemodul sowie batteriepack und fahrzeug damit |
| WO2025077762A1 (zh) * | 2024-05-20 | 2025-04-17 | 惠州亿纬锂能股份有限公司 | 电池箱体及电池包 |
| WO2025138443A1 (zh) * | 2023-12-28 | 2025-07-03 | 惠州亿纬锂能股份有限公司 | 电池包及用电设备 |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021111663A1 (de) * | 2021-05-05 | 2022-11-10 | Bayerische Motoren Werke Aktiengesellschaft | Steckbares Anschlusselement für einen Kühler eines Hochvoltspeichers |
| JP7548166B2 (ja) | 2021-08-31 | 2024-09-10 | 株式会社デンソー | 電池監視システム |
| DE102023204629A1 (de) * | 2023-05-17 | 2024-11-21 | Mahle International Gmbh | Batteriegehäuse für eine Fahrzeugbatterie, Fahrzeugbatterie mit demselben sowie Fahrzeug mit einer solchen Fahrzeugbatterie |
| KR20240169258A (ko) * | 2023-05-24 | 2024-12-03 | 현대모비스 주식회사 | 파우치형 배터리 액침 냉각 시스템 |
| DE102023122348A1 (de) * | 2023-08-21 | 2025-02-27 | Elringklinger Ag | Energiespeichereinheit, Überwachungseinheit und Kontaktierungssystem |
| CN119050537A (zh) * | 2023-11-10 | 2024-11-29 | 茵赛尔株式会社 | 与盒体整合的液浸冷却方式电池系统 |
| CN222619848U (zh) * | 2024-01-18 | 2025-03-14 | 武汉亿纬储能有限公司 | 一种浸没式液冷电池包 |
| DE102024104421A1 (de) * | 2024-02-16 | 2025-08-21 | Bayerische Motoren Werke Aktiengesellschaft | Wärmetauschelement für ein Hochvoltspeichermodul |
| CN222126699U (zh) * | 2024-03-29 | 2024-12-06 | 惠州亿纬锂能股份有限公司 | 一种电池包 |
| EP4629401A1 (de) * | 2024-04-03 | 2025-10-08 | Automotive Cells Company SE | Energiespeichermodul mit einem deckel mit fluidischen verbindungen |
| IT202400007807A1 (it) * | 2024-04-09 | 2025-10-09 | Fiat Ricerche | "pacco di batteria elettrica con celle di batteria in contatto diretto con un flusso di un liquido termoregolatore, con distribuzione ottimizzata del liquido termoregolatore" |
| US20250372766A1 (en) * | 2024-05-29 | 2025-12-04 | GM Global Technology Operations LLC | Battery pack with direct cooling channels |
| IT202400012871A1 (it) * | 2024-06-05 | 2025-12-05 | Fiat Ricerche | "gruppo di batteria elettrica con sistema termoregolatore perfezionato" |
| CN222940014U (zh) * | 2024-06-28 | 2025-06-03 | 武汉亿纬储能有限公司 | 换热组件、电池模组及电池包 |
| CN118825488B (zh) * | 2024-07-03 | 2025-05-06 | 广西易德科技有限责任公司 | 一种汽车电池的液冷散热结构及散热方法 |
| CN118712622A (zh) * | 2024-07-10 | 2024-09-27 | 东风汽车集团股份有限公司 | 一种电池包及车辆 |
| DE102024131227A1 (de) | 2024-10-25 | 2026-04-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batteriemodul und Verfahren zum Entleeren und Dekontaminieren eines Batteriemoduls |
| FR3168695A1 (fr) * | 2024-11-21 | 2026-05-22 | Stellantis Auto Sas | Cellule munie d’un espaceur oblique pour une batterie de véhicule |
| WO2026125987A1 (en) * | 2024-12-10 | 2026-06-18 | C.R.F. Società Consortile Per Azioni | Electric battery unit, with battery cells in contact with a flow of a temperature-regulating liquid that is distributed at different heights between the cells |
| WO2026150255A1 (en) * | 2025-01-08 | 2026-07-16 | C.R.F. Società Consortile Per Azioni | "electric battery pack with a thermoregulating liquid supply channel integrated in a lower cell-supporting structure" |
| CN120109360A (zh) * | 2025-05-07 | 2025-06-06 | 浙江晶科储能有限公司 | 电池装置、储能系统及用电设备 |
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| US20120247713A1 (en) | 2009-12-15 | 2012-10-04 | Fisker Automotive, Inc. | Method and system for battery temperature control in a hybrid or electric vehicle |
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| US12224420B2 (en) | 2018-11-16 | 2025-02-11 | Valeo Systemes Thermiques | Device for thermal regulation of an electronic component |
| DE102018133004A1 (de) | 2018-12-20 | 2020-06-25 | Bayerische Motoren Werke Aktiengesellschaft | Elektrospeicher und fahrzeug mit einem solchen |
| EP3696876A1 (de) * | 2019-02-18 | 2020-08-19 | 3M Innovative Properties Company | Batteriemodul |
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2021
- 2021-03-10 DE DE102021105861.9A patent/DE102021105861A1/de not_active Withdrawn
-
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- 2022-03-04 WO PCT/EP2022/055573 patent/WO2022189295A1/de not_active Ceased
- 2022-03-04 US US18/280,993 patent/US20240170754A1/en active Pending
- 2022-03-04 DE DE112022001407.5T patent/DE112022001407B4/de active Active
- 2022-03-04 SE SE2351094A patent/SE547985C2/en unknown
- 2022-03-04 GB GB2315464.4A patent/GB2637678A/en active Pending
- 2022-03-04 CN CN202280019517.8A patent/CN116964830A/zh active Pending
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| DE102013218489A1 (de) * | 2013-09-16 | 2015-03-19 | Robert Bosch Gmbh | Batteriemodul und Batteriepack |
| DE102018003174A1 (de) * | 2018-04-18 | 2018-10-04 | Daimler Ag | Speichereinrichtung zum Speichern von elektrischer Energie für ein Kraftfahrzeug, insbesondere für einen Kraftwagen |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4418443A4 (de) * | 2022-12-26 | 2025-01-15 | Lg Energy Solution, Ltd. | Tauchgekühltes batteriemodul sowie batteriepack und fahrzeug damit |
| WO2024225550A1 (ko) * | 2023-04-28 | 2024-10-31 | 인셀(주) | 함체와 통합된 액침 냉각 방식 배터리 시스템 |
| CN116864861A (zh) * | 2023-08-24 | 2023-10-10 | 中宏科创新能源科技(浙江)有限公司 | 电池包及电子设备 |
| CN117393912A (zh) * | 2023-12-12 | 2024-01-12 | 中宏科创新能源科技(浙江)有限公司 | 全浸没式冷却箱及电池箱 |
| CN117393912B (zh) * | 2023-12-12 | 2024-04-09 | 中宏科创新能源科技(浙江)有限公司 | 全浸没式冷却箱及电池箱 |
| WO2025138443A1 (zh) * | 2023-12-28 | 2025-07-03 | 惠州亿纬锂能股份有限公司 | 电池包及用电设备 |
| CN117936975A (zh) * | 2023-12-29 | 2024-04-26 | 浙江吉利控股集团有限公司 | 电池组件及具有其的车辆 |
| WO2025077762A1 (zh) * | 2024-05-20 | 2025-04-17 | 惠州亿纬锂能股份有限公司 | 电池箱体及电池包 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112022001407B4 (de) | 2026-02-05 |
| GB2637678A8 (en) | 2025-10-08 |
| DE102021105861A1 (de) | 2022-09-15 |
| US20240170754A1 (en) | 2024-05-23 |
| DE112022001407A5 (de) | 2024-01-11 |
| SE2351094A1 (en) | 2023-09-21 |
| SE547985C2 (en) | 2026-01-07 |
| GB2637678A (en) | 2025-08-06 |
| CN116964830A (zh) | 2023-10-27 |
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