CN117881566A - Computer-implemented method and device for triggering advanced communication between an electric vehicle and a charging station - Google Patents
Computer-implemented method and device for triggering advanced communication between an electric vehicle and a charging station Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 5
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Classifications
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- 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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a computer-implemented method and a control device for triggering advanced communication between an electric vehicle (10) and a charging station (20), wherein the electric vehicle (10) comprises a control unit (100) having a first microcontroller (110) and a second microcontroller (120), the method comprising the steps of: -operating only the second microcontroller (120) of the control unit (200) in order to detect a wake-up signal from a possible connection of the electric vehicle (10) to the charging station (20) and keep the first microcontroller deactivated. -connecting the electric vehicle (10) to the charging station (20), whereby at least one wake-up signal is sent to the control unit (100); -detecting a wake-up signal from the connection of the electric vehicle (10) to the charging station (20) with the second microcontroller (120); -when a wake-up signal is detected, enabling the first microcontroller (110) using the second microcontroller (120).
Description
Technical Field
The present invention relates to a computer-implemented method and control device for triggering advanced communication between an electric vehicle and a charging station. The electric vehicle includes a control unit for advanced communication between the charging station and the electric vehicle and for low-grade communication between the charging station and the electric vehicle.
Background
Basic communication is used to detect a connection between a charging station and an electric vehicle and to perform basic signaling between the electric vehicle and the charging station. Advanced communication is used to control the charging process of an electric vehicle. Basic signaling and advanced communications are also explained in ISO and IEC 61851 standard documents. Basic signaling and advanced communication between electric vehicles and charging stations require different resources. Advanced communications require higher communication resources, which may cause higher power/current consumption, and low-level communications involve basic signaling requiring lower power/current consumption.
The standard control unit controlling the communication between the electric vehicle and the charging station has a microcontroller which controls the advanced and the low-level communication between the charging station and the electric vehicle. Such a control unit with a microcontroller has a relatively high power/current consumption during the charging process of the electric vehicle and also during normal operation of the electric vehicle (when no connection is established between the electric vehicle and the charging station). In the latter case, the control unit is always enabled, just to capture a signal from the charging station or the connection of the electric vehicle to the charging station in order to start the charging process of the electric vehicle. This continued activation of the control unit of the electric vehicle may result in a very high power consumption and current consumption of the control unit only for detecting the connection of the electric vehicle to the charging station, even when no connection is established between the electric vehicle and the charging station.
Disclosure of Invention
It is therefore an object of the present disclosure to create a computer implemented method and control device that reduces the energy consumption of an electric vehicle and/or increases the efficiency of the electric vehicle.
This object is achieved by a computer-implemented method comprising the features of the independent claims and by a control device for performing the computer-implemented method according to the independent claims. Advantageous embodiments of the method and the control device are specified in the independent claims.
A computer-implemented method for triggering advanced communications between an electric vehicle and a charging station is specified. The electric vehicle comprises a control unit having a first microcontroller for advanced communication between the charging station and the electric vehicle and a second microcontroller for basic communication between the charging station and the electric vehicle. According to the present disclosure, the control unit comprises two microcontrollers, each having its own specific task. The first microcontroller has tasks for advanced communications and the second microcontroller has tasks for basic communications. The method for triggering advanced communication between an electric vehicle and a charging station comprises the steps of:
-operating only the second microcontroller of the control unit in order to detect a wake-up signal from a possible connection of the electric vehicle to the charging station and keep the first microcontroller deactivated. In other words, during normal operation of the electric vehicle, for example during driving or stopping, the first microcontroller is deactivated and does not require any electrical energy, and only the second microcontroller is in operation in order to detect a possible wake-up signal from a possible connection of the electric vehicle to the charging station. The wake-up signal is a signal triggered from a connection of the electric vehicle to the charging station or a signal directly from the charging station when a plug of the charging station is plugged into the electric vehicle for charging. During normal operation of the electric vehicle, only the second microcontroller requires energy to detect the wake-up signal.
-connecting the electric vehicle to the charging station, whereby at least one wake-up signal is sent to the control unit. In this step, the electric vehicle is connected to a charging station to recharge the electric vehicle. Due to this connection, a wake-up signal is sent to the control unit to start communication between the control unit and the charging station, thereby managing the charging process of the electric vehicle.
-detecting a wake-up signal from a connection of the electric vehicle to the charging station with the second microcontroller. In this step, the second microcontroller detects a wake-up signal, which itself comes directly from the connection of the electric vehicle to the charging station or from the charging station. The second microcontroller is designed to detect a wake-up signal from the connection of the electric vehicle to the charging station.
-when a wake-up signal is detected, enabling the first microcontroller for advanced communication between the electric vehicle and the charging station. In other words, when the second microcontroller detects a wake-up signal from the connection of the electric vehicle to the charging station, the first microcontroller is then enabled, for example using the second microcontroller, in order to conduct the required advanced communication between the electric vehicle to the charging station, thereby initiating a recharging process for the electric vehicle.
According to the present disclosure, for the charging process, the tasks of the high-level communication and the low-level communication are separated between the first microcontroller and the second microcontroller of the control unit. The first microcontroller is responsible for advanced communication requiring high power consumption and the second microcontroller is responsible for basic communication between the charging station and the electric vehicle that does not require high power consumption. Thus, it is possible to keep the first microcontroller deactivated for a large part of the operating time of the electric vehicle, except for the actual charging process of the electric vehicle. This may be achieved using only a second microcontroller that monitors whether the wake-up signal is from the connection of the electric vehicle to the charging station or directly from the charging station. Thus, the total power consumption of the control unit may be reduced over the service life of the electric vehicle, which thus increases the range of the electric vehicle and improves the overall efficiency of the electric vehicle. According to one embodiment, it is conceivable that the microcontroller receives a wake-up signal from another control unit, which predicts a future charging process, for example from a navigation system planning a recharging process.
According to one embodiment, the second microcontroller operates using a polling sequence in order to detect a wake-up signal from the connection of the electric vehicle to the charging station. Polling is the process by which the control unit waits for an external device to check its readiness or status. In this embodiment, a polling sequence is used to detect the wake-up signal. The second microcontroller is also not always enabled for the polling sequence. The second microcontroller is enabled only when the polling sequence enables the second microcontroller. Thus, by using a polling sequence to detect a wake-up signal from a connection of the electric vehicle, the power consumption of the second microcontroller may also be further reduced, thereby increasing the overall efficiency of the control unit and thus the electric vehicle. Thus, the polling sequence for detecting the wake-up signal helps to achieve the desired efficiency of the control unit.
According to one embodiment, the length of the polling sequence and the wake-up signal are adapted to each other such that each wake-up signal is detected by the second microcontroller. The wake-up signal has a predefined length, for example 100 milliseconds or 200 milliseconds. The polling sequence includes a high point (highs) and a low point (low), and the wake-up signal will be detected by the second microcontroller when the high point and the wake-up signal of the polling sequence occur simultaneously. Therefore, it is necessary that the polling sequence is shorter than the length of the wake-up signal. In other words, the time between the high and low points of the polling sequence must be less than the total length of the wake-up signal. In this case, at least one high point of the polling sequence occurs, which detects the presence of a wake-up signal from the connection between the electric vehicle and the charging station. Thus, according to this embodiment, it is simple and reliable to detect each wake-up signal from the connection between the electric vehicle and the charging station. Further, the adaptation of the polling sequence and the length of the wake-up signal results in a reliable and efficient method of detecting each wake-up signal in combination with a low power consumption of the second microcontroller.
According to one embodiment, the polling sequence comprises a fast polling sequence and/or a slow polling sequence. According to this embodiment, the polling sequence may be a fast polling sequence, a slow polling sequence, or a combination of a fast polling sequence and a slow polling sequence. The difference between the fast polling sequence and the slow polling sequence is that the fast polling sequence has a higher frequency than the slow polling sequence. For example, the fast polling sequence may have a frequency that is five times that of the slow polling sequence. According to one embodiment, a fast polling sequence is used to detect a fast wake-up signal (e.g., a button, a shutter, or a switch), and a slow polling sequence is used to detect a slow wake-up signal/source (e.g., an ADC input and a control pilot signal from a charging station).
According to one embodiment, each polling sequence is implemented using a PWM signal on the second microcontroller. The PWM signal is a pulse width modulated signal having a constant cycle time. The period of the slow polling sequence is for example five times the period of the fast polling sequence. The PWM signal is particularly easy to implement on the second microcontroller and achieves the desired advantages in order to detect the wake-up signal. It is therefore a simple and easy way to implement the required detection function on the second microcontroller in order to reliably detect a wake-up signal from the connection between the electric vehicle and the charging station.
According to one embodiment, the fast polling sequence is designed to capture the state of the digital input and the slow polling sequence is designed to monitor the PWM signal from the charging station and/or the ADC input signal from the charging station. Digital inputs refer to switches and shutters that constitute a fast wakeup source monitored by a fast polling sequence. The control pilot signal (PWM signal) and ADC are used for basic signaling and are monitored by a slow polling sequence. The communication standard only mentions control pilots and ADC, a fast polling source is for example an additional requirement, which will ensure that the charger plug is successfully connected to the charging station. This can be used on an as-needed basis, as the implementation is generic so that all possible wake-up sources can be detected. According to one embodiment, the control pilot signal determines the connection state, the voltage available for charging and the state of charge in the case of AC charging, in the case of DC charging it generates a pulse of constant duty cycle, which indicates that the charging process has to be switched to advanced communication. The specified design is implemented in such a way that different types of connectors with different fast wake-up signals and slow wake-up signals can be identified by the same software and can be reused for multiple vehicles with minimal updates.
According to one embodiment, the first microcontroller is enabled via the second microcontroller by enabling its power supply, whereby the first microcontroller is woken up for advanced communication between the electric vehicle and the charging station. According to this embodiment, the first microcontroller or the control unit comprises a power supply for the first microcontroller. The enabling of this power supply to the first microcontroller enables the first microcontroller for the desired advanced communication between the electric vehicle and the charging station. According to this embodiment, the second microcontroller only enables the power supply of the first microcontroller for enabling the first microcontroller. Thus, according to this embodiment, it is particularly simple and reliable to enable the first microcontroller after detecting a wake-up signal from the connection between the electric vehicle and the charging station.
According to one embodiment, the second microcontroller switches to a transmission mode after detection of the wake-up signal, wherein in the transmission mode data from the connection of the electric vehicle to the charging station and/or advanced communication data from and to the charging station are transmitted via the second microcontroller to and from the first microcontroller. In the transmission mode, the second microcontroller transfers data from the charging station only to the first microcontroller and transfers data from the first microcontroller to the charging station. This reduces the wiring required and reduces the overall complexity of the control unit.
According to one embodiment, the second microcontroller records a wake-up signal during both fast and slow polling. If the data is consistent with the wake event, the wake of the first microcontroller is complete. After the first microcontroller is woken up, a wake-up record from the second microcontroller is sent to the first microcontroller as required. According to this embodiment, after the first microcontroller is enabled, data is collected within the second microcontroller and sent to the first microcontroller.
According to one embodiment, the communication between the first microcontroller and the second microcontroller is synchronous to asynchronous communication (synchronous to asynchronous communication) from the first microcontroller to the second microcontroller. The communication is in a request response format. The request is sent from the first microcontroller and the response is sent from the second microcontroller. A clock reference for the entire duration of the communication is given by the first microcontroller. The implemented software supports two types of formats, one format comprising a 16 byte format (16 clock pulses) and a second type format comprising a 24 byte format (24 clock pulses). The use of a particular type of format depends on the function requested from the second microcontroller. The second type of format is mainly used for responses that require more than 8 byte responses. Those format types (type 1 and type 2) use 8 bytes for the request and the remaining 8 or 16 bytes for the response, which reduces the communication load on the second microcontroller. The idle time between the request and the response is greater than the maximum time required for the second microcontroller to execute the data of the request and collect the response. This is to ensure that the correct response is ready before the second clock pulse sequence begins. The second microcontroller defaults to a receive mode during start-up and switches to a transmit mode only when a response to a request from the first microcontroller is to be sent. Thus, with the above design, the synchronization-to-synchronization communication between the first microcontroller and the second microcontroller is managed in a particularly advantageous manner.
According to the present disclosure, between all different types of connectors, such as type 1 (IEC 62196 type 1), type 2 (IEC 62196 type 2), CHAdeMO, chaoji, china AC and China dc connectors between an electric vehicle and a charging station, it is possible to detect a connection between the electric vehicle and the charging station and trigger advanced communication between the control unit and the charging station.
According to one embodiment, the wake-up signal is as PWM signal from a connection between the electric vehicle and the charging station, also referred to as control pilot from the charging station. The control pilot may be used in both AC and DC charging. In AC charging, it is used to determine the state of the charging station as defined in the standard IEC 61851-1. In DC charging, it can also be used to force advanced communications.
The overall design of the control unit, in combination with the charging station and the software design, ensures a very low energy/current consumption of the control unit during the overall operation of the electric vehicle, including during the charging process, and further it ensures individual control of all peripheral devices.
According to a further aspect of the disclosure, a control device for triggering advanced communication between an electric vehicle and a charging station is specified. The control device is for example part of an electric vehicle, wherein the electric vehicle comprises a control unit having a first microcontroller for advanced communication between the charging station and the electric vehicle and a second microcontroller for basic communication between the charging station and the electric vehicle, wherein the control device is designed to perform the computer-implemented method according to any of the preceding claims. The control means may be the control unit or the second microcontroller itself. It is also conceivable that the control device is part of a control device of an electric vehicle or of a drive train of an electric vehicle. It is also conceivable that the control device is implemented in a server architecture of the electric vehicle.
Further advantageous embodiments of the present disclosure will become apparent from the detailed description of exemplary embodiments in connection with the accompanying drawings.
Drawings
In the drawings:
figure 1 shows in a schematic way the arrangement of a control unit of an electric vehicle according to a first exemplary embodiment,
figure 2 shows in a schematic way a communication arrangement between a first microcontroller and a second microcontroller according to a first exemplary embodiment,
fig. 3 shows in a schematic way a fast polling sequence and a slow polling sequence according to a first exemplary embodiment.
Detailed Description
Fig. 1 shows in a schematic manner a control unit 100 in an electric vehicle 10. Fig. 1 further illustrates a charging station 20 for recharging the electric vehicle 10. The control unit 100 includes a first microcontroller 110 and a second microcontroller 120. The first microcontroller 110 is designed to perform advanced communication between the charging station 20 and the electric vehicle 10. The second microcontroller 120 is designed to perform basic communication between the charging station 20 and the electric vehicle 10. The control unit 100 further comprises a first power supply 130 and a second power supply 140. The first power supply 130 is designed to provide power to the first microcontroller 110 and the second power supply 140 is designed to provide power to the second microcontroller 120. The first microcontroller 110 to the second microcontroller 120 use synchronous communication 150 to asynchronous communication 160. The synchronous communication 150 through the asynchronous communication 160 are also shown in fig. 1.
For synchronous communication 150 to asynchronous communication 160, clock pulses 190 are provided from the first microcontroller 110 to the second microcontroller 120, and data signals 180 are transmitted between the first microcontroller 110 and the second microcontroller 120. Fig. 1 further shows a wake-up line 170 from the second microcontroller 120 to the first power supply 130. Further, fig. 1 shows a reset line 200 from the first microcontroller 110 to the second microcontroller 120, which is designed to reset the second microcontroller 120. Further, fig. 1 shows an analog/digital line 210 between the second microcontroller 120 and the charging station 20. During normal operation of the electric vehicle 10 and the control unit 100, the first microcontroller 110 is deactivated and thus in a standby mode. In this case, the first power supply 130 does not supply power to the first microcontroller 110. During this time, only the second microcontroller 120 is enabled, and the second power supply 140 provides power to the second microcontroller 120. When the electric vehicle 10 is connected to the charging station 20, a wake-up signal is sent to the second microcontroller 120 through the analog/digital line 210. The wake-up signal is detected by the second microcontroller 120. The second microcontroller 120 may use a polling sequence that may include a fast polling sequence and a slow polling sequence for detecting a wake-up signal from a connection between the electric vehicle 10 and the charging station 20. When the wake-up signal is detected by the second microcontroller 120, power of the first power supply 130 is enabled by the second microcontroller 120 via the wake-up line 170. The enablement of the first power supply 130 enables the first microcontroller 110, and advanced communications between the first microcontroller 110 and the charging station 20 may be enabled or may begin. The second microcontroller 120 may store the state of all wake-up sources during polling, and the first microcontroller 110 may enable advanced communication when the state of the wake-up source is requested by the first microcontroller 110 through synchronous communication 150 to asynchronous communication 160 based on the received information.
Fig. 2 shows a communication diagram 300 between the communication of the first microcontroller 110 and the second microcontroller 120. The first microcontroller 110 uses synchronous communications 150 and the second microcontroller 120 uses asynchronous communications 160. The communication diagram 300 of fig. 2 shows a request from the first microcontroller 110 to the second microcontroller 120 and a response from the second microcontroller 120 to the first microcontroller 110. During the request, the first microcontroller 110 is in a transmit mode and the second microcontroller 120 is in a receive mode. The first microcontroller 110 sends a clock pulse 190 to the second microcontroller 120 over the data line 180 and sends a request to the second microcontroller 120 using 8 bytes. During the request, the second microcontroller is in a receive mode. In response, the first microcontroller 110 still sends a clock pulse 190 to the second microcontroller 120 over the data line 180, but the second microcontroller 120 sends a response to the first microcontroller 110 using 8 or 16 bytes depending on type 1 or type 2 communications. During the response, the second microcontroller 120 is in the transmit mode and the first microcontroller 110 is in the receive mode.
Fig. 3 shows a sequence diagram 400 with a fast polling sequence 410 and a slow polling sequence 420. A polling sequence 410, 420 is used and implemented within the second microcontroller 120 to detect a wake-up signal from the charging station 20 or from a connection of the electric vehicle 10 to the charging station 20. The sequence diagram 400 further shows a time axis 430. According to this embodiment, the polling sequence for detecting the wake-up signal includes a fast polling sequence 410 and a slow polling sequence 420. Both the fast polling sequence 410 and the slow polling sequence 420 are PWM signals implemented in the second microcontroller 120. The full period (i.e., the small loop 460) of the first polling sequence 410 is comprised of a first time span T1, a second time span T2, and a third time span T3. Those three time spans constitute a small loop 460. The pulses of the first polling sequence 410 are defined by a first time span T1 plus a second time span T2. The period of the slow poll sequence 420 includes four small loops 460 and a combination of a first time span T1, a second time span T2, a fourth time span T4, a fifth time span T5 and a second time span T6, and a further third time span T3 minus the fourth time span T4, the fifth time span T5 and the sixth time span T6. Five small loops 460 constitute an overall command loop 470 that includes five pulses of the fast polling sequence 410 and one pulse of the slow polling sequence 420. During the period T3, the control unit 100 cannot detect the wake-up signal, which can only be detected during the active periods T1 and T2 of the pulses of the PWM signal defining the fast poll sequence 410. In order to detect each wake-up signal, the wake-up signal length must be longer than the time span T3. For example, if the wake-up signal has a length of 200ms, the time span T3 has a length of 120ms, for example. In this case, each wake-up signal conveys at least one pulse defined by the time spans T1 and T2 of the fast polling sequence 410, which allows the second microcontroller 120 to detect the wake-up signal and thus trigger advanced communication. According to this embodiment, the fast polling sequence 410 reads a digital signal and the slow polling sequence 420 reads an analog signal from the charging station 20. The fast polling sequence 410 is capable of capturing all fast wake-up sources (e.g., switches, baffles, and buttons) and the slow polling sequence 420 is used to monitor control pilot signals and ADC inputs for basic signaling, so having a combination of both polling sequences 410, 420 allows all wake-up sources of the electric vehicle 10 to be detected for charging and low-level basic signaling can also be implemented in a relatively simple manner.
According to one embodiment, the pulses of fast poll sequence 410 do not overlap with the pulses of fast poll sequence 420, which is also shown in fig. 3. According to one embodiment, the slow poll sequence 420 monitors all possible ADC sources for a particular type of charger along with the control pilot PWM signal. The timing parameters of the fast polling sequence 410 and the slow polling sequence 420 may be structured depending on the requirements.
The first, fourth, seventh, tenth, and thirteenth nodes 431, 434, 437, 440, 443 produce a turn-on, and the third, sixth, ninth, twelfth, and fifteenth nodes 433, 436, 439, 442, 445 will produce a turn-off of the fast poll sequence 410 with a certain delay. The second node 432, fifth node 435, eighth node 438, eleventh node 441 and fourteenth node 444 will read the digital input during the fast poll sequence high point time. The sixteenth node 446 and the eighteenth node 448 generate pulses of the slow poll sequence 420 and the seventeenth node 447 will read the analog signal at the desired timing.
According to this embodiment, analog and control pilot signals will be acquired during the pulse (seventeenth node 447) of the slow poll sequence 420. The time between the eighteenth node 448 and the first node 431 should be (T3- (t4+t5+t6)) to ensure that the pulses of the fast polling sequence 410 and the pulses of the slow polling sequence do not overlap.
Claims (10)
1. A computer-implemented method for triggering advanced communication between an electric vehicle (10) and a charging station (20), wherein the electric vehicle (10) comprises a control unit (100) having a first microcontroller (110) for advanced communication between the charging station (20) and the electric vehicle (10) and a second microcontroller (120) for basic communication between the charging station (20) and the electric vehicle (10), the method comprising the steps of:
-operating only a second microcontroller (120) of the control unit (200) in order to detect a wake-up signal from a possible connection of the electric vehicle (10) to a charging station (20) and keep the first microcontroller deactivated;
-detecting, with the second microcontroller (120), the wake-up signal from the connection of the electric vehicle (10) to the charging station (20) as a result of the connection of the electric vehicle (10) to the charging station (20) and the control unit (100) receiving at least one wake-up signal;
-when the wake-up signal is detected, enabling the first microcontroller (110) for advanced communication between the electric vehicle (10) and the charging station (20).
2. The computer-implemented method of claim 1, wherein the second microcontroller (120) operates using a polling sequence (410, 420) to detect the wake-up signal from the connection of the electric vehicle (10) to the charging station (20).
3. The computer-implemented method of claim 2, wherein the polling sequence (410, 420) and the length of the wake-up signal are adapted to each other such that each wake-up signal is detected by the second microcontroller (120).
4. A computer-implemented method according to claim 2 or 3, wherein the polling sequence (410, 420) comprises a fast polling sequence (410) and/or a slow polling sequence (420).
5. The computer-implemented method of claims 2 to 4, wherein each polling sequence (410, 420) is implemented using a PWM signal on the second microcontroller (120).
6. The computer-implemented method of claim 4 or 5, wherein the fast polling sequence (410) is designed to capture a state of a digital input, and wherein the slow polling sequence (420) is designed to monitor PWM signals from the charging station (20) and/or ADC input signals from the charging station (20).
7. The computer-implemented method of any of the preceding claims, wherein the first microcontroller (110) is enabled via the second microcontroller (120) by enabling a power supply (130) of the first microcontroller (110), whereby the first microcontroller (110) is woken up for advanced communication between the electric vehicle (10) and the charging station (20).
8. The computer-implemented method of any of the preceding claims, wherein the second microcontroller (120) switches to a transmission mode after detection of the wake-up signal, wherein in the transmission mode data from the connection of the electric vehicle (10) to the charging station (20) and/or advanced communication data from and to the charging station (20) are transmitted to and from the first microcontroller (110) via the second microcontroller (120).
9. The computer-implemented method of any of the preceding claims, wherein the communication between the first microcontroller (110) and the second microcontroller (120) is a synchronous to asynchronous communication from the first microcontroller (110) to the second microcontroller (120).
10. Control device for triggering advanced communication between an electric vehicle (10) and a charging station (20), wherein the electric vehicle (10) comprises a control unit (100) having a first microcontroller (110) for advanced communication between the charging station (20) and the electric vehicle (10) and a second microcontroller (120) for basic communication between the charging station (20) and the electric vehicle (10), wherein the control device is designed to perform the computer-implemented method according to any of the preceding claims.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21465542 | 2021-08-20 | ||
| EP21465542.5 | 2021-08-20 | ||
| DE102021209183.0 | 2021-08-20 | ||
| DE102021209487.2 | 2021-08-30 | ||
| PCT/EP2022/072900 WO2023021059A1 (en) | 2021-08-20 | 2022-08-17 | A computer-implemented method and device for triggering a high-level communication between an electric vehicle and a charging station |
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| EP2767430A4 (en) | 2011-10-11 | 2015-12-30 | Toyota Motor Co Ltd | Charging control device for vehicle, and vehicle equippped with same |
| US9233611B2 (en) | 2011-11-10 | 2016-01-12 | Lear Corporation | Proximity detection circuit having short protection |
| DE102013210061B4 (en) | 2012-05-31 | 2019-06-19 | Lear Corporation | Activation-by-control-pilot-circuit for on-board battery charger |
| US9573476B2 (en) | 2014-06-09 | 2017-02-21 | GM Global Technology Operations LLC | Method and apparatus for controller wakeup using control pilot signal from charge port |
| DE102017223806A1 (en) | 2017-12-27 | 2019-06-27 | Borgward Trademark Holdings Gmbh | Charging control method, associated equipment and vehicle |
| KR102603886B1 (en) | 2018-02-13 | 2023-11-21 | 엘지이노텍 주식회사 | Charging control apparatus for electrical vehicle |
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