Charging assembly

Abstract

A charging assembly (1) for interconnecting a first or a second external power supply to a battery system of an electric vehicle. The charging assembly comprises a charging inlet (2), comprising a first socket (3) suitable to receive during operation at a first external power supply, a compatible first plug. The charging assembly further comprises an adapter (4) comprising at a first end (6) a first plug (7) configured to be, during operation at a second external power supply, connected to the first socket (3) of the charging inlet (2) and at a second end (8) a second socket (9), wherein the second socket (9) is configured to receive during operation at the second external power supply, a compatible second plug; wherein the charging assembly (1) comprises a first control unit (10) for controlling first communication and a second control unit (11) for controlling second communication.

Description

[0001] P29033PC00

[0002] 1 / 30

[0003] CHARGING ASSEMBLY

[0004] FIELD OF THE DISCLOSURE

[0005] The present disclosure relates to a charging assembly for electric vehicles. In particular, the present disclosure is directed to a charging inlet and an adapter.

[0006] BACKGROUND OF THE DISCLOSURE

[0007] In the last years, the charging standard for charging electric vehicles has evolved towards reducing the charging time by allowing high power charging. While standard electric vehicles typically rely on the advanced Combined Charging System (CCS) for efficient charging, heavy-duty vehicles demand significantly more power, leading the establishment of the Charln Task Force to develop high-capacity Megawatt Charging System (MCS) Standard.

[0008] Most heavy-duty electric vehicles currently come equipped with CCS charging inlets, however, with the introduction of the MCS Standard, manufacturers add a second, dedicated MCS charging inlet alongside the existing CCS charging inlet. So heavy-duty vehicle manufacturers are actively redesigning their product to accommodate the new MCS Standard for ensuring compatibility with the higher power demands.

[0009] One example for this is DE102022121235A1 published by MAN Truck & Bus SE in February, 29, 2024, relating to a vehicle charging communication device for establishing a communication link between a control unit of an electric vehicle, including a contact interface for connecting to the vehicle’s charging port via a P29033PC00

[0010] 2 / 30 charging cable, multiple transceivers linked to the control unit, and a configuration unit to select and connect a transceiver.

[0011] Charging inlets are discussed in WO 2022 / 148763 A1 , the entirety of which is herewith incorporated by reference herein.

[0012] SUMMARY OF THE DISCLOSURE

[0013] Charging inlets for connecting an external power supply to a battery system of an electric vehicle are known from the prior art. In particular a dual-inlet setup for allowing battery charging with two different charging standards requires additional space on the electric vehicle, posing new design challenges. Furthermore, as most electric vehicles and charging stations are equipped with the Combined Charging System (CCS) charging standard, a flexible solution for allowing charging of an electric vehicle equipped with a Megawatt Charging System (MCS) standard at a charging station equipped with CCS standard is usually nowadays unfeasible.

[0014] In a first aspect, the present disclosure relates to a charging assembly which can easily be used to overcome certain disadvantages of the prior art as will be disclosed hereinafter in more detail. In a second aspect, an adapter for a charging inlet compatible with the charging assembly is provided. In a third aspect, a charging inlet compatible with the charging assembly is provided.

[0015] In the present disclosure, the charging assembly for interconnecting a first or a second external power supply to a battery system of an electric vehicle to charge the battery system is disclosed. The charging assembly comprises a charging P29033PC00

[0016] 3 / 30 inlet. In particular, the charging inlet is configured for fixed installation at an electrical vehicle, in particular a truck. Preferably, the charging inlet comprises a first socket which is suitable to receive during operation at a first external power supply, a compatible first plug of the first external power supply. In general, compatibility between a plug and a socket is established by matching designs, respecting power levels and communicating via suitable communication protocols. The first socket may be arranged in a housing and the housing may be accessible from outside the electric vehicle via an access passage.

[0017] The charging assembly further comprises an adapter. The adapter comprises at a first end a first plug. During operation at a second external power supply, the first plug is configured to be connected to the first socket of the charging inlet. At a second end of the adapter, the adapter comprises a second socket. During operation, the second socket is configured to receive a compatible second plug of the second external power supply. An external power supply usually is a charging station having a plug which can be connected to a socket of a charging inlet of an electric vehicle. The first external power supply may differ from the second external power supply, in that the first external power supply is configured to provide higher power than the first external power supply. For example, the first external power supply may be a charging station compatible with MCS Standard capable of supporting power levels up to 3.75 MW. and the second external power supply may be a charging station compatible with CCS standard, in particular CCS-Type 2, capable of supporting power levels up to 350 kW. In particular, the first socket of the charging inlet is compatible with the first plug of the first external power supply and incompatible with the second plug of the second external power supply. The adapter advantageously overcomes the incompatibility P29033PC00

[0018] 4 / 30 between the second plug of the second external power supply and first socket of the charging inlet. When interconnected, the second plug of the second external power supply is connected to the adapter via the second socket of the adapter and the adapter is connected to the first socket of the charging inlet via the first plug of the adapter.

[0019] In particular, compatibility between the second plug and the first socket is established by connecting the second plug to the second socket and connecting the first plug to the first socket.

[0020] According to the disclosure, the charging assembly comprises a first control unit. The first control unit has the functionality of controlling a first communication with the first external power supply across the first socket of the charging inlet and a thereto compatible plug of the first power supply. In addition to the first control unit, the charging assembly comprises a second control unit. The second control unit has the functionality of controlling a second communication with the second external power supply across the second socket and a thereto compatible plug of the second power supply. Usually, a control unit enables the exchange of information such as charging status, energy transfer or safety protocol between a charging station and a vehicles control system. A control unit may be a microcontroller or processor responsible for processing communication protocols, managing data transmission and ultimately controlling the charging of an electric vehicle. A control unit may have a plurality of communication interfaces including the necessary circuitry and firmware to support a communication standard with the charging station. Also, a control unit may incorporate safety features to ensure secure communication and prevent unwanted errors, such as overloading, short P29033PC00

[0021] 5 / 30 circuits or unauthorized access. The first communication may be defined by a first communication standard, such as the MCS Standard according to IEC 62832. On the other hand, the second communication may be defined by a second communication standard, such as the CCS standard according to IEC 15118. On a high level of communication, both the first communication and the second communication may communicate the same information with respect to the charging of the electric vehicle. Alternatively, the charging assembly may comprise a control unit which has the functionality of controlling the first communication and the second communication.

[0022] In a variant, the first socket of the charging inlet is compatible with MCS Standard. In this embodiment, a heavy-duty vehicle may have only a single charging inlet compatible with MCS. In this way, a dual-inlet setup is avoided, such that no additional space on the vehicle is required. Advantageously, the first socket compatible with MCS may be future-proofing as it prepares a vehicle for upcoming charging infrastructure and standards, ensuring the vehicle to be compatible with MCS as the industry norm for high-power charging changes. Furthermore, the second socket of the adapter is compatible with CCS, in particular CCS Type 2 or CCS Type 1 . Bypassing the compatibility between a plug of a charging station compatible with CCS and a socket of the vehicle compatible with MCS is achieved via the adapter. For example, a CCS Type 2 plug of a charging station may not be compatible with a MCS Standard socket of a charging inlet. The adapter may have on the first end a MCS Standard plug to connect to an MCS socket of the charging inlet, and on the second end a CCS Type 2 socket to receive a CCS Type 2 plug of the charging station. P29033PC00

[0023] 6 / 30

[0024] When interconnected and in order to avoid mix-up between the first communication and the second communication, the first control unit may be configured for the first communication with the first external power supply across a first data line. In particular, the first data line is established between the first socket and the first plug of the first external power supply. Further, the second control unit may be configured for the second communication with the second external power supply across a second data line. In particular, the second data line is established between the first socket and the second plug of the second external power supply via the adapter. For a better understanding of the second data line, the first socket of the charging inlet may be according to the MCS Standard and the second plug of the second external power supply may be according to the CCS standard, in particular CCS-Type 2. The first plug of the adapter may be according to the MCS Standard and the second socket may be according to the CCS-Type 2 standard. In a preferred variation, for communication, the MCS Standard has two Ethernet pins. Additionally, the MCS Standard preferably has a Charge Enable (CE) pin, an Insertion Detection (ID) pin and a Protective Earth (PE) pin. For communication, the CCS Standard, in particular the CCS-Type 2 may have a Control Pilot (CP) pin, a Proximity Pilot (PP) pin and a Protective Earth (PE) pin. The CE, ID and PE pins of the first plug are usually connected to the CP, PP and PE pins of the second socket. When interconnected, the CE, ID and PE pins of the first socket establish the second communication line with the second plug via the adapter. Data lines may preferably be realized as hardware connections such as dedicated wiring. Depending on the application, for communication across data lines standardized communication protocols such as Power Line Communication (PLC) or Ethernet-based communication are preferably used. For example, the first data line may be a connection of a twisted-pair wiring extending across a P29033PC00

[0025] 7 / 30

[0026] MCS plug of a charging station when interconnected to the MCS socket of the charging inlet. In this example, an Ethernet-based communication protocol is used for communication between the charging station and the electric vehicle.

[0027] If appropriate, the second control unit may be arranged at the charging inlet. Thereby, the second data line may extend across the first socket and the first plug of the adapter. In particular, the second data line extends across the second socket and the second plug. This arrangement has the benefit of reduced cable length, while reducing potential signal loss which is beneficial for MCS. Also, an integrated design of the second control unit with the charging inlet may be achieved, allowing for easier modular replacement if needed.

[0028] Alternatively, the second control unit may be arranged at the adapter. Thereby, the second data line may extend across the second plug of the second charging station and the second socket. In particular, the second control unit may communicate with the charging inlet across the first plug and the first socket. Beneficial for this arrangement is a flexibility in control of control unit size and of complexity of functions, for example supplementary diagnostics or enhanced safety features.

[0029] For additional improvements of a compact integration and design, the second control unit and the first control unit may be integrated with each other. Besides the benefit of space saving, an enhanced redundancy and reliability may be achieved. For example, if the first control unit encounters an issue, the second control unit may take over certain critical functions, thereby enhancing the reliability of charging. P29033PC00

[0030] 8 / 30

[0031] Preferably, the first data line comprises a first data connection and a second data connection. Both, first and second data connection may preferably be based on 10Base-T communication standard. In comparison to PLC, a 10Base-T communication provides a higher data rate, enabling faster and more reliable communication. Furthermore, 10Base-T is less prone to interference from electrical noise compared to PLC which is beneficial in high-power charging environments where electromagnetic interference could be an issue. Overall, 10Base-T improves the reliability of data transmission, ensuring stable communication.

[0032] In order to prevent damage to the charging assembly, the adapter may be mechanically coded with respect to the first socket. The first plug of the adapter may e.g. feature a protrusion and the first socket of the charging inlet may feature a thereto compatible recess, such that when interconnected, the recess of the charging inlet hosts the protrusion of the first plug. Other plugs which do not feature the recess may then not be interconnected to the first socket. Alternatively or additionally, the first plug of the adapter may feature a recess. Also, the first socket of the charging inlet may feature a protrusion. During interconnection, the recess of the first plug may be configured to host the protrusion of the charging inlet during interconnection.

[0033] By matching a protrusion at the first plug or charging inlet, and a recess at the first socket or the first plug, an improved alignment and stability of the interconnection may be established. This is especially important in high-power applications such as MCS, where even minor misalignment can cause arcing, increased resistance, or inefficient power transfer. P29033PC00

[0034] 9 / 30

[0035] In order to enhance safety, in particular avoid overheating of the adapter, the adapter may comprise a temperature sensor. During operation, the temperature sensor may be interconnected to the first control unit. The first control unit may receive temperature data from the temperature sensor which may be indicative for avoiding overheating of the adapter. For example, if a threshold temperature is reached, the first control unit may indicate this to a control unit of the vehicle which will then abort the charging. Alternatively or additionally, the temperature sensor may be interconnected to the second control unit during operation. The charging inlet may comprise a cooling unit. During charging, the temperature sensor interconnected to the first and second control unit may provide a redundant temperature measurement.

[0036] If appropriate, the adapter may comprise a third control unit. In particular, the third control unit may determine health condition of the adapter. The health conditions may be with respect to moisture and / or mechanical shock such as adapter temperature, current, voltage, physical degradation indicators, contact resistance, insulation resistance, relative humidity. Having a third control unit provides a unified system for determining the health condition of the adapter. This centralization may make the determination of the health condition more straightforward and efficient, as all health-related data is processed and stored in one location.

[0037] Usually, plugs of a charging station have locking means which prevent accidental disconnection with a charging inlet of an electric vehicle. In order to maintain the same degree of safety with respect to accidental disconnection, the adapter may comprise a locking device. In particular, the locking device may be used for locking the adapter with respect to the first socket when interconnected to each other P29033PC00

[0038] 10 / 30 during operation. A locking device may be a locking pin, a latch, collar and / or hook which establishes a locking system with a counter locking device of the charging inlet.

[0039] It may be beneficial for a user to easily identify if the adapter has established proper connection with the second plug and / or charging inlet. In addition, it may be useful for the user to easily identify charging activities. For such, an optical indicator may provide feedback, enhanced user experience, safety indications, operational status or even diagnostics status. An optical indicator may be a LED, an optical fiber indicator, electroluminescent panel or a display. Advantageous results can be achieved when the adapter comprises an optical indicator. In particular, the optical indicator may indicate operational status such as standby, charging or charging completed. Alternatively or additionally, the optical indicator may indicate the condition of the adapter such as connected to second plug, connected to second plug and first socket.

[0040] Referring to the locking device for locking the adapter with respect to the first socket when interconnected, the adapter may also act as immobilizer. As an immobilizer, the adapter prevents unwanted movement of the electric vehicle when connected to the first socket of the charging inlet.

[0041] In a second aspect, an adapter for a charging inlet compatible with a charging assembly as previously described is disclosed. The adapter comprises at a first end a first plug compatible with the MCS Standard. In particular, the first plug is configured to be, during operation at a second external power supply, connected to a first socket of the charging inlet. The adapter comprises at a second end a P29033PC00

[0042] 11 / 30 second socket which is compatible with the CCS standard, in particular CCS Type 2, CCS Type 1 , respectively. In particular, the second socket is configured to receive during operation at the second external power supply, a compatible second plug compatible with the CCS Standard, in particular CCS Type 2, CCS Type 1 respectively, of the second external power supply.

[0043] The CCS Standard preferably communicates via CP, PP and PE. The CP enables basic communication between a charger and an electric vehicle. By applying a relevant resistor between the CP and PE, the vehicle signals its various states. Via the PP on the other hand, the charger detects if the charger is connected to the charging inlet. Once the connection via CP and PP is confirmed, PLC takes over for high-level communication thereby handling the main data communication between the electric vehicle and the charging station. In order to maintain communication via CP, PP and PE when the second plug is connected to the first socket via the adapter, the first plug may comprise a CE pin, an ID pin and a PE pin. Usually, these pins have identical functionality as the CP, PP and PE pins according to the CCS Standard. The CE pin of the first plug may be interconnected to a CP pin of the second socket. The ID pin of the first plug may be interconnected to a PP pin of the second socket. The PE pin of the first plug may be interconnected to a PE pin of the second socket. A connection between the CE, ID and PE pins of the first plug with the CP, PP and PE pins of the second socket may be realized by wiring, or bus bars. However, in cases wherein the CE, ID and PE pins according to MCS Standard may have a different functionality than the CP, PP and PE pins according to the CCS Standard, in particular CCS Type 2 or CCS Type 1 respectively, the first control unit and / or the second control unit may control and switch the functionality according to the CCS Standard when P29033PC00

[0044] 12 / 30 interconnected. For example, the functionality of the CE, ID and PE pins of the first socket may be based on different signaling than the CP, PP and PE pins of the second plug. Such signaling may comprise a signal type, a frequency, a current limit, a voltage limit, etc.

[0045] If appropriate, the adapter may comprise a housing interconnecting the first plug and the second socket. The housing allows for protection while simultaneously achieving alignment and secure connection of internal connections. In particular, the housing comprises a first housing part and a second housing part that are interconnected to each other in mating direction of the first plug. The mating direction is to be understood as a mating path, substantially perpendicular to the face of the first plug. Alternatively or in addition the first housing part and the second housing part may be interconnected to each other transversal to the mating direction of the first plug. The first housing part and the second housing part may be easily connected and disconnected, allowing better serviceability of the adapter.

[0046] In order to enhance the serviceability of the adapter, the first plug and the second socket are with respect to the housing design as separate parts independent from the housing. In that way, the first plug and the second socket may be replaced individually and independently from each other. In a mounted position, the first plug and the second socket are at least partially arranged in the housing.

[0047] For maintaining safety requirements, the adapter may comprise at least one removeable protective element which can be replaced in cause of damage. Such P29033PC00

[0048] 13 / 30 protective elements may be circuit breakers, surge protectors and / or ground fault circuit interrupters.

[0049] With respect to mechanical locking when interconnected, the adapter may comprise a displaceable locking bolt relative to the housing of the adapter. In particular, the locking bolt may be at least partially arranged inside a protrusion of the housing. The locking bolt may be displaceable by an actuator. Actuators may be electrically-, mechanically-, magnetically- or electromagnetically-based. The actuator may be arranged at the charging inlet. Alternatively or in addition, the actuator may be arranged at the adapter. During operation, the locking bolt locks a second connector of a second charging station to the adapter. This arrangement further enhances connection stability and prevents unauthorized removal. The locking bolt further protects the adapter when interconnected against environmental stress.

[0050] The third aspect of the disclosure relates to a charging inlet. In particular, the charging inlet may be compatible with a charging assembly as previously described. The charging inlet comprises a first control unit for controlling a first communication with a first external power supply across a first plug. The charging inlet further comprises a second control unit for controlling a second communication with a second external power supply across a second plug. The first communication may be defined by a first communication standard, such as the MCS Standard according to IEC 62832. On the other hand, the second communication may be defined by a second communication standard, such as the CCS standard according to IEC 15118. P29033PC00

[0051] 14 / 30

[0052] Good results are achieved when the charging inlet comprises a housing in which the first control unit is arranged. Alternatively or in addition, the second control unit may be arranged in the housing of the charging inlet. In this way maintenance and upgrades of the first control unit and / or second control unit may more easily be performed.

[0053] It is to be understood that both the foregoing general description and the following detailed description present embodiments, and are intended to provide an overview or framework for understanding the nature and character of the disclosure. The accompanying drawings are included to provide a further understanding, and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments, and together with the description serve to explain the principles and operation of the concepts disclosed.

[0054] BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The herein described disclosure will be more fully understood from the detailed description given herein below and the accompanying drawings which should not be considered limiting to the disclosure described in the appended claims. The drawings are showing:

[0056] Fig. 1 shows a variation of a charging assembly and second plug in an exploded from an upward perspective view;

[0057] Fig. 2 shows an adapter according to the disclosure from an upward perspective view; P29033PC00

[0058] 15 / 30

[0059] Fig. 3 shows the adapter of Fig. 2 from a downward perspective view;

[0060] Fig. 4 shows schematically an adapter connected to a charging inlet.

[0061] DESCRIPTION OF THE EMBODIMENTS

[0062] Reference will now be made in detail to certain embodiments, examples of which are illustrated in the accompanying drawings, in which some, but not all features are shown. Indeed, embodiments disclosed herein may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the disclosure. Whenever possible, like reference numbers will be used to refer to like components or parts.

[0063] Figure 1 shows a charging assembly 1 according to the disclosure, for interconnecting a first or a second external power supply (not shown in detail) to a battery system (not shown in detail) of an electric vehicle (not shown in detail) to charge the battery system.

[0064] The charging assembly 1 comprises a charging inlet 2, configured for installations at the electric vehicle, preferably in an area behind the left front wheel. The charging inlet 2 preferably comprises a first socket 3 suitable to receive during operation at a first external power supply, a compatible first plug of the first external power supply. An interconnection 13 between the compatible first plug 7 and the P29033PC00

[0065] 16 / 30 first socket 3 is illustrated. Further, the charging inlet 2 comprises a housing 14 in which a first control unit 10 and a second control unit 11 are arranged (shown schematically). As seen in Figure 1 , the compatible first plug 7is compatible with MCS Standard. Similarly, the first socket 3 of the charging inlet 2 is compatible with the MCS Standard. The charging assembly 1 further comprises an adapter 4. A second plug 5 of a second external power supply is not compatible with the first socket 3. As seen in Figure 1 , the second plug 5 is according to the CCS- Type 2 Standard and therefore not compatible with the first socket 3 according to the MCS Standard. Alternatively, the second plug 5 may also be according to the CCS-Type 1 Standard. Interconnecting the second plug 5 to the first socket 3 via the adapter 4 advantageously overcomes the incompatibility between the second plug 5 and the first socket 3. An adapter 4 according to a variant is shown in Figure 2 in an upward perspective view and in Figure 3 in a downward perspective view. The adapter 4 comprises at a first end 6 a first plug 7 as seen in Figure 2. In particular, the first plug 7 is compatible with the MCS Standard and thereby configured to be connected to the first socket 3 of the charging inlet 2. At a second end 5 of the adapter 4, the adapter 4 comprises a second socket 9. In particular, the second socket 9 is compatible with the CCS-Type 2 Standard. Alternatively, the second socket 9 may be compatible with the CCS-Type 1 Standard.

[0066] The adapter 4 as shown in Figure 2 and 3 comprises a housing 12 interconnecting the first plug 7 and the second socket 9. In particular, the housing 12 comprises a first housing part and a second housing part that are interconnected to each other in mating direction of the first plug 7. P29033PC00

[0067] 17 / 30

[0068] In order to maintain a high degree of safety with respect to accidental disconnection, the adapter 4 may also comprise a locking device in form of a pin, latch, collar and / or hook. The locking device prevents accidental disconnection with a charging inlet 2 of an electric vehicle.

[0069] During operation, the second socket 9 is configured to receive a compatible second plug 5 of the external power supply. The adapter 4 may be mechanically coded with respect to the first socket 3. The adapter 4 may feature a protrusion which may be hosted by a recess of the first socket 3 when interconnected. Alternatively, the adapter 4 may feature a recess which may host a protrusion of the first socket 3 when interconnected.

[0070] In Figure 4, a charging assembly 1 , in particular a connection between an adapter 4 connected to a charging inlet 2 is shown schematically. The charging inlet 2 and the first plug 7 of the adapter 4 are according to the MCS Standard. Both charging inlet 2 and first plug 7 have two power poles, in particular a DC+ 19, 25 and a DC- pole 20, 26, a PE pin 21 , 27, two Ethernet pins 24, 30, a CE pin 22, 28 and an ID pin 23, 29. The second socket 9 of the adapter 4 has two power poles, in particular a DC+ 31 and a DC- pole 32, a PE pin 33, a CP pin 34 and a PP pin 35. Inside the adapter 4, the power poles of the first plug 25, 26 and second socket 31 , 32 are connected, indicated by power lines 16. In particular, the DC+ pole 31 of the second socket 9 may be connected to the DC+ pole 25 of the first plug 7 and the DC- pole 32 of the second socket 9 may be connected to the DC- pole 26 of the first plug 7. Also, the PE pin 33 of the second socket 9 may be connected to the PE pin 27 of the first plug 7, indicated by a protective earth line 18. Such power lines 16 and / or protective earth lines 18 may be realized by bus P29033PC00

[0071] 18 / 30 bars. For example, a first bus bar may be designed for connection between the DC+ poles 25, 31 , a second bus bar may be designed for connection between the DC- poles 26, 32 and a third connection may be designed for connection between the PE pins 27, 33 of the second socket 9 and first plug 7 respectively. The bus bars may be compactly aligned within a housing of the adapter 4. In particular, an insulation means may be arranged between the bus bars to electrically and / or thermally insulate the bus bars from each other. Such bus bars may extend within the adapter 4 in a Z- shaped form. In particular, each bus bar may be unitary formed or be formed in multiple parts. Furthermore, the CE pin 28 of the first plug 7 may be connected to the CP pin 34 of the second socket 9. Also, the ID pin 29 of the first plug 7 may be connected to the PP pin 35 of the second socket 9. These connections are indicated by data lines 17. Each data line 17 may be realized by wiring. The wiring may be realized by single core or multi-core copper wires having insulation means and / or shielding. In particular, each wiring may extend within the adapter 4 from the second socket 9 to the first plug 7.

[0072] The charging assembly 1 comprises a first control unit 10 for controlling a first communication. The first communication is established with a first external power supply across the first socket 3 of the charging inlet 2 and a thereto compatible plug. The first external power supply may be a charging station according to the MCS Standard with an MCS plug. The first communication may be defined by a MCS Standard according to IEC 62832. The charging assembly 1 further comprises a second control unit 11 for controlling a second communication. The second communication is established with a second external power supply across the second socket 9 and a thereto compatible plug 5. The second external power supply may be a charging station according to the CCS Standard with a CCS- P29033PC00

[0073] 19 / 30

[0074] Type 2 plug. The second communication may be defined by a CCS Standard according to IEC 15118. The first and second control unit 10, 11 may be designed as a microcontroller. Alternatively, the first and second control unit 10, 11 may be designed as a processor.

[0075] In order to avoid mix-up between the first communication and the second communication, the first control unit 10 may be configured for the first communication with the first external power supply across a first data line. The first data line is established between the first socket 3 and the first plug of the first external power supply. The second control unit 11 may be configured for the second communication with the second external power supply across a second data line. The second data line is established between the first socket 3 and the second plug 5 of the second external power supply via the adapter 4. In the embodiment according to Figure 4, the first control unit 10 and the second control unit 11 are arranged at the charging inlet 2. The first control unit 10 and the second control unit 11 may be designed as a microcontroller. In particular, the first control 10 unit is connected to the Ethernet pins 24 of the charging inlet 2, indicated by data lines 17. Such a data line 17 may be realized by twisted-pair wiring, in particular twisted-pair copper wiring. Furthermore, the twisted-pair wiring may also have shielding and insulation means. The second control unit 11 may be connected to the CE, ID pins 22, 23 of the charging inlet 2, indicated by data lines 17. Such data lines 16 may be realized by wiring. The wiring may be realized by single core or multi-core copper wires having insulation means and / or shielding.

[0076] When the charging assembly 1 is interconnected to the adapter 4, the first plug 7 of the adapter 4 is connected to the first socket 3 of the charging inlet 2, as shown P29033PC00

[0077] 20 / 30 in Figure 4. Thereby a connection between the CP pin 34, respectively PP pin 35 of the second socket 9 to the second control unit 11 is realized. When a second plug (not shown) of a second external power supply is connected to the second socket 9 of the adapter 4, and the adapter 4 is interconnected to the charging inlet 2, a second communication is established between a second data line. In this particular case, the second data line may be established between the second plug and the first socket 3 via the adapter 4.

[0078] The first control unit 10 and the second control unit 11 may be configured to selectively exchange information. For example, the second control unit 11 may be configured to communicate with a vehicle control unit 15 via a second communication protocol. Alternatively or in addition, the first control unit 10 may be configured to communicate with the vehicle control unit 15 via a first communication protocol. When interconnected to a compatible first plug of the first external power supply, the first control unit 10 may provide charge-related information to the second control unit 11 . When the charging inlet 2 is connected to a second plug of the second external power supply via the adapter 4, the second control unit 11 may provide charge-related information to the first control unit 10. The second control unit 11 may transform the information to a first communication protocol. The first control unit 10 and / or the second control unit 11 may be configured to communicate with the vehicle control unit 15.

[0079] Communication between the vehicle control unit 15 and a single control unit of the charging assembly 1 is also conceivable. In such a variant, a charging assembly 1 , in particular a charging inlet 2 of the charging assembly 1 may comprise a single control unit for MCS and CCS communication which is configured for P29033PC00

[0080] 21 / 30 communication with the vehicle control unit 15. The control unit may be configured for a first communication with the first external power supply across a first data line, and a second communication with the second external power supply across a second data line. The single control unit may take over the functionality of the first control unit 10 and the second control unit 11 .

[0081] P29033PC00

[0082] 22 / 30

[0083] LIST OF DESIGNATIONS

[0084] 1 Charging assembly 22 Charge enable pin

[0085] 2 Charging inlet (charging inlet)

[0086] 3 First socket 23 Insertion detection pin

[0087] 4 Adapter (charging inlet)

[0088] 5 Second plug 30 24 Two ethernet pins (charg¬

[0089] 6 First end ing inlet)

[0090] 7 First plug 25 Power pole positive (first

[0091] 8 Second end Plug)

[0092] 9 Second socket 26 Power pole negative (first

[0093] 10 First control unit 35 plug)

[0094] 11 Second control unit 27 Protective earth pin (first

[0095] 12 Housing (Adapter) Plug)

[0096] 13 Interconnection (process) 28 Charge enable pin (first

[0097] 14 Housing (Charging inlet) Plug)

[0098] 15 Control unit (vehicle) 40 29 Insertion detection pin

[0099] 16 Power line (first plug)

[0100] 17 Data line 30 Two ethernet pins (first

[0101] 18 Protective earth line Plug)

[0102] 19 Power pole positive 31 Power pole positive (sec- (charging inlet) 45 ond socket)

[0103] 20 Power pole negative 32 Power pole negative (charging inlet) (second socket)

[0104] 21 Protective earth pin 33 Protective earth pin (sec(charging inlet) ond socket) P29033PC00

[0105] 23 / 30

[0106] 34 Control pilot pin (second 35 Proximity pilot pin (secsocket) ond socket)

Claims

P29033PC0024 / 30PATENT CLAIMS1 . Charging assembly (1 ) for interconnecting a first or a second external power supply to a battery system of an electric vehicle to charge the battery system, the charging assembly (1 ) comprising: a. a charging inlet (2), configured for installation at the electric vehicle, comprising a first socket (3) suitable to receive during operation at a first external power supply, a compatible first plug of said first external power supply; b. an adapter (4) comprising at a first end (6) a first plug (7) configured to be, during operation at a second external power supply, connected to the first socket (3) of the charging inlet (2) and at a second end (8) a second socket (9), wherein the second socket (9) is configured to receive during operation at the second external power supply, a compatible second plug of said second external power supply; wherein c. the charging assembly (1 ) comprises a first control unit (10) for controlling first communication with the first external power supply across the compatible first plug and a second control unit (11 ) for controlling second communication with the second external power supply across the compatible second plug (5).

2. The charging assembly (1 ) according to claim 1 , wherein the first socket (3) of the charging inlet (2) is compatible with MCS and the second socketP29033PC0025 / 30(9) of the adapter (4) is compatible with CCS, in particular CCS Type 2 or CCS Type 1.

3. The charging assembly (1 ) according to any of the preceding claims, wherein when interconnected: a. the first control unit (10) is configured for the first communication with the first external power supply across a first data line established between the first socket (3) and the first plug (7) of the first external power supply; and b. the second control unit (11 ) is configured for the second communication with the second external power supply across a second data line (17) established between the first socket (3) and the second plug (5) of the second external power supply via the adapter (4), wherein i. the second control unit (11 ) is arranged at the charging inlet(2) and the second data line extends across the first socket(3) and the first plug (7) of the adapter (4), and in particular the second data line extends across the second socket (9) and the second plug (5); or ii. the second control unit (11 ) is arranged at the adapter (4) and the second data line extends across the second plug (5) of the second charging station and the second socketP29033PC0026 / 30(9), and in particular the second control unit (11 ) communicates with the charging inlet (2) across the first plug (7) and the first socket (3).

4. The charging assembly (1 ) according to any of the preceding claims, wherein the second control unit (11 ) and the first control unit (10) are integrated to each other.

5. The charging assembly (1 ) according to claim 3 or 4, wherein the first data line comprises a first data connection and a second data connection and is preferably based on 10Base-T communication standard.

6. The charging assembly (1 ) according to any of the preceding claims, wherein a. the first plug (7) of the adapter (4) features a protrusion and the first socket (3) of the charging inlet (4) features a recess, configured to host the protrusion during interconnection; and / or b. the first plug (7) of the adapter (4) features a recess and the first socket (3) of the charging inlet (2) features a protrusion, configured to host the protrusion during interconnection, for coding of the adapter (4) with respect to first socket (3) preventing damage to the charging assembly (1 ).P29033PC0027 / 307. The charging assembly (1 ) according to any of the preceding claims, wherein the adapter (4) comprises a temperature sensor which during operation is interconnected to the first and / or the second control unit (10,11 ).

8. The charging assembly (1 ) according to any of the preceding claims, wherein the adapter (4) comprises a third control unit to determine health condition of the adapter (4), in particular with respect to moisture and / or mechanical shock.

9. The charging assembly (1 ) according to any of the preceding claims, wherein the adapter (4) comprises a locking device for locking the adapter (4) with respect to the first socket (3) when interconnected to each other during operation.

10. The charging assembly (1 ) according to any of the preceding claims, wherein the adapter (4) comprises an optical indicator to indicate operational status and / or condition of the adapter (4).11 . The charging assembly (1 ) according to any of the preceding claims, wherein the adapter (4) acts as an immobilizer preventing unwanted movement of the electric vehicle when connected to the first socket (3) of the charging inlet (2).

12. Adapter (4) for a charging inlet (2) compatible with a charging assembly (1 ) according to any of the claims 1 through 11 , wherein the adapter (4) comprises at a first end (6) a first plug (7) compatible the MCS-standard and configured to be, during operation at a second external power supply,P29033PC0028 / 30 connected to a first socket (3) of the charging inlet (2) and at a second end (8) a second socket (9) compatible with the CCS, in particular CCS-Type 2, respectively CCS Type 1 , standard, wherein the second socket (9) is configured to receive during operation at the second external power supply, a compatible second plug (5) compatible with the CCS Type 2, respectively CCS Type 1 standard, of said second external power supply.

13. The adapter according (4) claim 12, wherein the first plug (7) comprises a Charge Enable pin (28), a Insertion Detection pin (29) and a Protective Earth pin (27) interconnected to a Control Pilot pin (34), a Proximity Pilot pin (35) and a Protective Earth pin (33) of the second socket (9).

14. The adapter according (4) claim 12 or claim 13, wherein the adapter (4) comprises a housing (12) interconnecting the first plug (7) and the second socket (9), wherein the housing (12) comprises a first housing part and a second housing part that are interconnected to each other in mating direction of the first plug (7) and / or transversal thereto.

15. The adapter according (4) to any of claims 12 through 14, wherein the first plug (7) and the second socket (9) are with respect to the housing (12) designed as separate parts independent from the housing (12) and which are in a mounted position at least partially arranged in the housing (12).

16. The adapter according (4) to any of claims 12 through 15, wherein the adapter (4) comprises at least one removeable protective element that can be replaced in cause of damage.P29033PC0029 / 3017. The adapter according (4) to any of claims 12 through 16, wherein the adapter (4) comprises a relative to the housing (12) of the adapter (4) displaceable locking bolt, in particular a locking bolt displaceable by an actuator, in particular an actuator arranged at the charging inlet (2) and / or the adapter (4), to lock during operation a second plug (5) of a second charging station to the adapter (4).

18. Charging inlet (2) compatible with a charging assembly (1 ) according to any of the claims 1 through 11 , wherein the charging inlet (2) comprises a first control unit (10) for controlling first communication with the first exter- nal power supply across the first plug and a second control unit (11 ) for controlling second communication with the second external power supply across the second plug (5).

19. The charging inlet (2) according to claim 18, wherein the charging inlet (2) comprises a housing in which the first control unit (10) and / or the second control unit (11 ) are arranged.

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