EP4594131A1 - Ladesteckverbinder für elektro- und hybridfahrzeuge - Google Patents
Ladesteckverbinder für elektro- und hybridfahrzeugeInfo
- Publication number
- EP4594131A1 EP4594131A1 EP23782749.8A EP23782749A EP4594131A1 EP 4594131 A1 EP4594131 A1 EP 4594131A1 EP 23782749 A EP23782749 A EP 23782749A EP 4594131 A1 EP4594131 A1 EP 4594131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- charging
- charging connector
- phase change
- container
- change material
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/36—Temperature of vehicle components or parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
Definitions
- the invention relates to a charging connector for electric and hybrid vehicles, with charging contacts, for contacting corresponding charging contacts of a corresponding charging connector.
- Electric and hybrid vehicles have a rechargeable energy storage device, usually a high-voltage battery, which supplies energy to an electric drive motor during operation.
- the storage capacities of these high-voltage batteries are limited, so they must be regularly recharged at a charging station.
- the battery is charged using a charging cable provided between the charging station and the vehicle.
- the charging cable for example in accordance with the European standard IEC 62196 Type 2, is provided with a charging plug on one side that can be plugged into a charging socket provided on the charging station, and with a charging coupling on the other side that can be connected to a charging plug installed in the electric or hybrid vehicle.
- charging sockets, charging plugs, charging couplings and charging plugs are subsumed under the term "charging connector”.
- Charging sockets and charging couplings have contact sleeves as charging contacts, and charging plugs and charging plugs that can be installed in electric and hybrid vehicles have contact pins as charging contacts that can be inserted into the contact sleeves.
- a charging current flowing through the charging connector heats up due to ohmic current heat losses.
- the heating of the charging connector is limited to a limit temperature increase.
- the limit temperature increase is limited to 50 K. This in turn leads to a maximum charging current for mostly standardized connector geometries that generally cannot be greater than 200 A in continuous load operation.
- the task is to be solved to provide an electrical connection body which enables increased charging currents with limited heating and therefore has an increased short-term current carrying capacity.
- This task should be solved by providing an electrical connection body for a charging plug or a charging socket is provided, wherein the electrical connection body has a first connection area for galvanic connection to an electrical energy receiver and has a second connection region for galvanic connection to an electrical energy source, wherein the electrical connection body is designed such that it has a cooling fluid channel formed in the electrical connection body, wherein the cooling fluid channel of the electrical connection body is fluidly connected to a cooling fluid source which is arranged in a charging station.
- Cooling of a charging connector for electric and hybrid vehicles, which originates from the side of the charging station, is also otherwise well known from the prior art.
- DE 10 2015 119 338 Al describes that two connection points for coolant lines are arranged on a contact sleeve element of a charging plug. By means of a spiral-shaped plug-on element, coolant is guided circularly around the contact sleeve element. The two connection points serve as inlet and outlet for the coolant, which is led from the charging station to the charging plug.
- EP 3 433 902 B1 also describes a connector part with cooled contact elements.
- a coolant is provided via coolant lines to the contact elements of the charging coupling connected to the charging cable.
- a fluid is provided as a coolant, which is directed into the hollowed-out contact element perpendicular to the contact element and flows back within the contact element.
- 10 2016 105 361 B4 also describes a connector part with a cooled contact element, whereby the charging station side also provides for the introduction of a coolant via coolant lines to the contact elements of a charging socket connected to the charging cable is .
- Guide elements are arranged on the contact elements and are intended to allow the coolant in the form of compressed air to flow around the contact elements.
- the object of the present invention is to achieve improved heat dissipation in a charging connector that is not itself equipped with a cooling system on the part of a charging station.
- a charging connector for electric and hybrid vehicles is thus provided, with charging contacts for contacting corresponding charging contacts of a corresponding charging connector and a latent heat storage device which is in thermal contact with at least one charging contact.
- Latent heat storage is based on exploiting the enthalpy of thermodynamic changes in the state of a storage medium.
- the principle used here is the utilization of the phase transition from the solid phase to the liquid phase, i.e. the transition from the solidified medium to the melted medium.
- a latent heat storage contains a phase change material.
- Phase change materials are materials that release heat or cold during their phase change depending on the respective melting point and the ambient temperature. be able to record .
- the amount of energy stored in the temperature range of the phase change is significantly larger than the energy absorption in a temperature interval of the same size during heating without a phase transition. With such heating without a phase transition, the energy absorption is only determined by the specific heat capacity of the respective material. Therefore, phase change materials have an advantage in terms of heat storage density, especially at small temperature differences.
- phase change material When a phase change material is heated and its temperature approaches the melting temperature, the heat absorbed by the phase change material is used to complete the phase change. There is therefore no increase in temperature during the conversion from the solid phase to the liquid phase. Once the phase change material is completely liquid, the phase change material continues to heat as before the phase transition.
- the phase change material does not heat up any further during the phase transition, the heating is delayed compared to heating without a phase transition.
- This is exploited according to the invention to keep the temperature at the charging contact, which is in thermally conductive contact with the latent heat storage device, as low as possible. In this way, it is possible to extend the time during a charging process until a critical temperature is reached at which the charging process must be interrupted until the charging contact has cooled down to a permissible temperature again.
- the thermal contact in question here between the charging contact and the latent heat storage device can be achieved, for example, by direct physical contact. However, contact via a heat-conducting element is also possible. It is also possible to arrange the latent heat storage device in the immediate vicinity of the charging contact.
- a corresponding charging connector here, then on the one hand this means a charging connector that has the same plug-in face as the charging plug-in connector according to the invention, but one plug-in face has contact pins if the other plug-in face has contact sleeves, and vice versa.
- the set of charging connector according to the invention and corresponding charging connector can therefore be plugged together.
- we are also talking about a corresponding charging connector if the plug faces only partially correspond in the sense mentioned above, i.e. the corresponding charging connector z. B.
- the charging connector according to the invention does not have all the contacts that are present in the charging connector according to the invention, but the existing contacts of the corresponding charging connector correspond in terms of the mating face to the charging connector according to the invention, so that the charging connector according to the invention and the corresponding charging connector can also be plugged together in this case.
- Such a case is e.g. B. in front of a charging coupling connected to a charging cable for direct current charging in accordance with the European standard IEC 62196 Type 2.
- the charging coupling can be inserted into a charging plug installed in the body of an electric or hybrid vehicle and suitable for AC charging and DC charging, with only the communication contacts and the protective contact being present in the AC connector face of the DC charging coupling, but no contacts for external conductors and a center conductor for AC charging .
- the latent heat storage device has a container which contains a phase change material whose phase transition from the solid phase to the liquid phase is used to dissipate heat from the charging contact.
- the phase change material has a phase transition from the solid phase to the liquid phase within the temperature range between 60 ° C and 80 ° C, preferably between 65 ° C and 75 ° C.
- a material containing paraffin and/or a material containing a salt hydrate is used as the phase change material.
- Such materials are well known as phase change materials and can be matched to a melting temperature of, for example, 70 ° C.
- the charging connector has four AC charging contacts, wherein the latent heat storage device is in thermal contact with all four alternating current charging contacts.
- the advantage of the invention is also available for the alternating current contacts of the charging connector.
- the phase change material in the liquid state does not have to be moved within the container.
- a circulation device for circulating the phase change material within the container is arranged in the container. This serves to improve the heat conduction in the latent heat storage device after the melting temperature of the phase change material has been exceeded. After the melting temperature of the phase change material has been exceeded, the heat circulation via the circulation device can be improved in this way.
- the circulation device has a circulation wheel which interacts with a drive shaft arranged outside the container via a magnetic coupling.
- phase change material changes from the solid to the liquid phase
- a volume change of typically about 10% occurs.
- the situation can arise that the phase change material practically melts "from bottom to top” and thus an overpressure is created in the container, which cannot be easily compensated due to the solid phase on top.
- a plurality of heat-conducting elements are arranged in the container and spacers are placed between at least some of the heat-conducting elements in order to keep the distances between the heat-conducting elements constant even during the phase transition of the phase change material.
- Sheet metal or plastic fries are preferably arranged in the container as heat-conducting elements.
- a plastic that is optimized in terms of thermal conductivity is preferably used for the plastic fries.
- the chambers contain at least two different phase change materials. Different chambers therefore contain different phase change materials. Phase change materials are considered to be different from one another if they have at least different melting temperatures. It is particularly preferred that a chamber that is closer to the charging contact contains a phase change material whose melting temperature is higher than the melting temperature of a phase change material that is contained in a chamber that is further away from the charging contact.
- the container has an elastic expansion element and/or an elastic expansion joint.
- an elastic expansion element and/or an elastic expansion joint.
- elastic plastics can be used as the material for the container.
- the container is made entirely from an elastic material.
- At least one elastically compressible element is introduced into the container.
- an elastically compressible element can e.g. B. as a piece of closed senporous elastomer foam or as an elastic container with gas filling can be introduced into the container of the latent heat storage.
- two openings are preferably provided in the housing to enable filling with the phase change material. These two openings are preferably sealed in a watertight and pressure-tight manner after filling.
- the filling quantity is preferably selected such that the volume expansion caused by the phase transition of the phase change material is compensated by an air cushion and the load on the container is thus reduced.
- the container openings are preferably closed with closure caps using a friction welding process.
- FIG. 1 Show in the drawings Fig. 1 a charging connector according to a preferred exemplary embodiment of the invention in a perspective view from a first side,
- Fig. 3 shows a corresponding charging connector in a perspective view
- Fig. 4 the charging connector from Fig. 2 in a perspective view when not yet closed
- Fig. 5a shows the latent heat storage of the charging connector from Fig. 4 in a perspective view from a first side
- Fig. 5b shows the latent heat storage device of the charging connector from Fig. 4 in a perspective view from a second side
- Fig. 6a the latent heat storage from Fig. 5a in a top view
- Fig. 6b the latent heat storage from Fig. 6a along the section line AA
- FIG. 6c Details of the latent heat storage from Fig. 6b, Fig. 7 a shows a part of a charging connector according to a preferred exemplary embodiment of the invention, in which the latent heat storage is formed integrally with the housing of the charging connector,
- Fig. 7b shows the part of the charging connector shown in Fig. 7a in a state joined to a second part
- Fig. 8 shows schematically the arrangement of a circulation device in a latent heat storage device for circulating the phase change material
- Fig. 9 shows a partial sectional view of a container with several chambers according to a preferred embodiment of the invention.
- Fig. 10 the installation of a charging connector according to a preferred exemplary embodiment on the body of an electric or hybrid vehicle.
- FIG. 1 shows a charging connector 1 according to a preferred exemplary embodiment of the invention in a perspective view from a first side and FIG.
- this charging connector 1 shows this charging connector 1 in a perspective view from the opposite side. From In terms of function and plug face, this is a built-in charging plug for electric and hybrid vehicles in accordance with the European standard IEC 62196 Type 2 with charging contacts 2 arranged in a housing 6, which include DC charging contacts 3 on the one hand and AC charging contacts 4 on the other.
- This charging connector 1 is presently provided as a charging plug for use on the vehicle body 23 of an electric or hybrid vehicle 5, as shown by way of example in FIG. 10 can be seen.
- the charging connector 1 has a latent heat storage 9, which is in thermal contact with the two DC charging contacts 3.
- Fig. 4 the connection part 24 of the charging connector 1, which faces the interior of the electric or hybrid vehicle 5 when installed in an electric or hybrid vehicle 5, is shown separately from the plug-in part 25, which faces outwards.
- electrical lines (not shown here) extend from the connecting part 24 and go to a battery of the electric or hybrid vehicle 5 lead .
- the corresponding one is placed on the plug-in part 25
- Charging connector 8 is plugged in for a charging process.
- the latent heat storage 9 has a container 10 which contains a phase change material, not shown here, whose phase transition from the solid phase to the liquid phase is used to cool the DC charging contacts 3.
- the phase change material has been filled into the container 10 via now closed filling openings 26.
- the charging contacts 2 are circular in cross section and the container 10 has a recess 12 within which the charging contacts 2 are positioned.
- the function of the latent heat storage 9 is now as follows:
- the phase change material is chosen so that it has a melting point of 70 ° C, i.e. it is solid below 70 ° C and liquid above this temperature.
- the phase change material is solid under normal ambient conditions. If the DC charging contacts 3 heat up during the charging process, the phase change material also heats up. This increases its temperature to a temperature of 70 ° C and remains in the solid phase . From the melting point of 70 ° C, the phase change material begins to melt, i.e. to liquefy. During this melting process, the temperature of the phase change material does not increase. Rather, its temperature remains at 70 ° C. Only when the phase change Once the material has completely melted, i.e. converted into its liquid phase, there will be a further increase in temperature.
- phase change material cools down again by releasing its heat into its surroundings and then solidifying again.
- latent heat storage 9 are arranged in the container 10 heat-conducting elements 14 in the form of sheets, which have a higher thermal conductivity than the phase change material 11.
- these heat-conducting elements 14 run in planes that are perpendicular to the longitudinal axes of the DC charging contacts 3. This facilitates the entry of the heat originating from the DC charging contacts 3 into the phase change material.
- Fig. 6c which shows the area from Fig. marked by a dashed rectangle. 6b shows an enlarged view, it can be seen that spacers 18 are placed between the heat-conducting elements 14.
- the charging connector 1 shown in FIGS 6 is inserted. Rather, the latent heat storage 9 is designed integrally with the housing 6 of the charging connector 1. This can have manufacturing advantages.
- a circulation device 13 for circulating the phase change material is arranged in the container 10.
- the circulation device 13 has a circulation wheel 17 which is provided with a magnetic ring 16.
- This magnetic ring 16 interacts with a magnet wheel 21 arranged outside the container 10 and located at the end of a drive shaft 28 of an electric motor 22. In this way, a magnetic coupling is realized so that the circulation wheel 17 can be driven by means of the electric motor 22 arranged outside the container 10.
- Fig. 9 shows a container 10 according to a preferred exemplary embodiment in a sectional view.
- the area of the container 10 around the area of the DC charging contact 3 is shown.
- the container 10 has several separate chambers 31, 32 which are filled with different phase change materials 29, 30. Included the chamber 31, which is arranged around the DC charging contact 3 and thus closer to the charging contact, is filled with such a phase change material 29, the melting temperature of which is higher than the melting temperature of the phase change material 30, which is located in the other two chambers 32, both of which are further away from the DC charging contact 3.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022124740.6A DE102022124740A1 (de) | 2022-09-27 | 2022-09-27 | Ladesteckverbinder für Elektro- und Hybridfahrzeuge |
| PCT/DE2023/100689 WO2024067914A1 (de) | 2022-09-27 | 2023-09-14 | Ladesteckverbinder für elektro- und hybridfahrzeuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4594131A1 true EP4594131A1 (de) | 2025-08-06 |
Family
ID=88237802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23782749.8A Pending EP4594131A1 (de) | 2022-09-27 | 2023-09-14 | Ladesteckverbinder für elektro- und hybridfahrzeuge |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4594131A1 (de) |
| DE (1) | DE102022124740A1 (de) |
| WO (1) | WO2024067914A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024113418A1 (de) * | 2024-05-14 | 2025-11-20 | Kiekert Aktiengesellschaft | Ladesteckverbinder für Elektro- und Hybridfahrzeuge |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008040281A1 (de) * | 2008-07-09 | 2010-01-14 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Kühlung von Bauteilen |
| DE102015100347A1 (de) | 2015-01-12 | 2016-07-14 | Phoenix Contact E-Mobility Gmbh | Elektroanschlusskörper für einen Ladestecker und/oder eine Ladebuchse, Ladestecker und Ladestation zur Abgabe elektrischer Energie an einen Empfänger elektrischer Energie |
| DE102015119338B4 (de) | 2015-11-10 | 2018-01-25 | Phoenix Contact E-Mobility Gmbh | Kontaktbaugruppe und Steckverbinderteil z.B. für einen Ladestecker |
| DE102016105347A1 (de) | 2016-03-22 | 2017-09-28 | Phoenix Contact E-Mobility Gmbh | Steckverbinderteil mit einem gekühlten Kontaktelement |
| DE102016105308A1 (de) * | 2016-03-22 | 2017-09-28 | Phoenix Contact E-Mobility Gmbh | Steckverbinderteil mit einem an einem Kontaktelement angeordneten Wärmekapazitätselement |
| DE102018108181A1 (de) * | 2018-04-06 | 2019-10-10 | Volkswagen Aktiengesellschaft | Ladekoppler mit Kühlvorrichtung, Ladekabel mit Ladekoppler sowie ein Kraftfahrzeug mit Ladekoppler |
| DE102018126854A1 (de) * | 2018-10-26 | 2020-04-30 | Bayerische Motoren Werke Aktiengesellschaft | Ladevorrichtung zum Verbinden eines elektrischen Energiespeichers eines Kraftfahrzeugs mit einer Ladestation |
| JP7183803B2 (ja) * | 2019-01-11 | 2022-12-06 | 株式会社オートネットワーク技術研究所 | コネクタ |
| US11654786B2 (en) * | 2020-10-19 | 2023-05-23 | GM Global Technology Operations LLC | Charging port cooling with phase changing material and porous heat conductor cage |
| US12212094B2 (en) * | 2021-06-23 | 2025-01-28 | Yazaki Corporation | Connector |
| EP4123253B1 (de) * | 2021-07-20 | 2023-07-12 | Rosenberger Hochfrequenztechnik GmbH & Co. KG | Mehrschichtiger latentwärmespeicher |
-
2022
- 2022-09-27 DE DE102022124740.6A patent/DE102022124740A1/de active Pending
-
2023
- 2023-09-14 WO PCT/DE2023/100689 patent/WO2024067914A1/de not_active Ceased
- 2023-09-14 EP EP23782749.8A patent/EP4594131A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024067914A1 (de) | 2024-04-04 |
| DE102022124740A1 (de) | 2024-03-28 |
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