WO2022036935A1 - Procédé et circuit de compatibilité vers l'avant pour un circuit de commande de charge en courant continu d'un véhicule électrique, et convertisseur - Google Patents

Procédé et circuit de compatibilité vers l'avant pour un circuit de commande de charge en courant continu d'un véhicule électrique, et convertisseur Download PDF

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WO2022036935A1
WO2022036935A1 PCT/CN2020/134165 CN2020134165W WO2022036935A1 WO 2022036935 A1 WO2022036935 A1 WO 2022036935A1 CN 2020134165 W CN2020134165 W CN 2020134165W WO 2022036935 A1 WO2022036935 A1 WO 2022036935A1
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WIPO (PCT)
Prior art keywords
charger
electric vehicle
connection line
line
loop
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PCT/CN2020/134165
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English (en)
Chinese (zh)
Inventor
李旭玲
倪峰
张萱
王善祥
桑林
戴敏
耿群锋
孙远
吕晓飞
古铭
Original Assignee
国网电力科学研究院有限公司
南瑞集团有限公司
国电南瑞科技股份有限公司
国网北京市电力公司
国家电网有限公司
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Publication of WO2022036935A1 publication Critical patent/WO2022036935A1/fr

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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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • 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
    • 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
    • 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
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the invention relates to a forward compatible method, circuit and converter for a direct current charging control circuit of an electric vehicle, and belongs to the field of electric vehicle charging.
  • the international mainstream charging systems include the Japanese DC fast charging system CHAdeMO, the European and American combined charging system CCS, the Chinese DC charging system GB 2015 and other mainstream DC interface technology forms.
  • Different charging systems use their own charging interfaces for charging. Charging, for example, CHAdeMO used in Japan is a CHAdeMO socket supported by Nissan and Mitsubishi Motors in Japan; Combo sockets used in Europe and the United States can allow slow charging and fast charging of electric vehicles, and are currently the most widely used socket type in Europe; Chinese DC chargers use The interface should comply with GB/T 20234.3-2015 "Electric Vehicle Conductive Charging Connection Device Part 3: DC Charging Interface".
  • ChaoJi charging technology solves a series of defects and problems existing in the international charging system.
  • ChaoJi electric vehicles need to solve the problem of forward compatibility to adapt to existing DC chargers and meet the current charging market demand.
  • the present invention provides a forward compatibility method, circuit and converter for a direct current charging control circuit of an electric vehicle, which solves the forward compatibility problem of ChaoJi electric vehicles.
  • the technical scheme adopted in the present invention is:
  • a forward compatible method for electric vehicle DC charging control circuit including,
  • the electric vehicle determines the type of the charger according to the monitored CC2 line voltage, and the electric vehicle enters the corresponding charging process;
  • the CC1 loop is turned on, and in response to the CC1 line voltage monitored by the charger being within the preset normal range, the charger enters the charging process.
  • connection structure of the equivalent resistance is as follows,
  • connection structure of the equivalent resistance is as follows,
  • the equivalent resistance Rc' is connected in parallel between the CC2 line and the PE line of the CC2 loop or/and the equivalent resistance Rc" is connected in series on the CC2 line of the CC2 loop.
  • the CC1 loop and the CC2 loop are respectively connected with several equivalent resistors matching the type of the charger.
  • the CC2 loop is connected with several equivalent resistors matching the type of the charger.
  • the electric vehicle DC charging control circuit is forward compatible circuit, including CC1 connection line, CC2 connection line and PE connection line;
  • the two ends of the CC1 connecting line are respectively connected to the CC1 connecting line on the electric vehicle side and the CC1 connecting line on the charger side. Connect the PE connection line on the electric vehicle side and the PE connection line on the charger side respectively;
  • the CC1 connection line, the CC1 connection line on the electric vehicle side, the CC1 connection line on the charger side, the PE connection line, the PE connection line on the electric vehicle side and the PE connection line on the charger side form the CC1 circuit.
  • the CC2 connection line, the CC2 connection line on the electric vehicle side, The CC2 connection line on the charger side, the PE connection line, the PE connection line on the electric vehicle side and the PE connection line on the charger side form the CC2 loop;
  • connection structure of the equivalent resistance is as follows,
  • connection structure of the equivalent resistance is as follows,
  • connection structure of the equivalent resistance is as follows,
  • connection structure of the equivalent resistance is as follows,
  • An equivalent resistance Rc' is connected in parallel between the CC2 connection line and the PE connection line or/and an equivalent resistance Rc" is connected in series on the CC2 connection line.
  • the forward compatible circuit of the electric vehicle DC charging control circuit further includes a CP connection line, two ends of the CP connection line are respectively connected to the electric vehicle side CC2 connection line and the charger side CP connection line, CP Equivalent resistance Rd is connected in series on the connecting line.
  • the CC1 loop and the CC2 loop are respectively connected with several equivalent resistors matching the type of the charger.
  • the CC2 loop is connected with several equivalent resistors matching the type of the charger.
  • the converter includes an electric vehicle DC charging control circuit forward compatible circuit, and the converter is connected between the vehicle socket on the electric vehicle side and the vehicle plug on the charger side.
  • the present invention sets an equivalent resistance on the CC1 loop or/and the CC2 loop, on the electric vehicle side, by monitoring the voltage on the CC2 line, the type of the charger is determined, and the charging process is carried out according to the type of the charger, On the charger side, by monitoring the voltage on the CC1 line, it is determined whether the charger is reliably connected to allow safe charging, so that the electric vehicle can be charged with all common chargers on the market, achieving forward compatibility.
  • Fig. 1 is the schematic diagram of the circuit of the present invention
  • Figure 2 shows the circuit structure of the CHAdeMO charger
  • Figure 3 shows the forward compatible charging process of CHAdeMO
  • Figure 4 shows the circuit structure of the CCS1 charger
  • FIG. 5 shows the circuit structure of the CCS2 charger
  • FIG. 6 shows the CCS forward compatible charging process
  • Figure 7 shows the circuit structure of the GB 2015 charger
  • Figure 8 shows the GB 2015 forward compatible charging process.
  • Figure 9 is a forward compatible vehicle circuit.
  • the forward compatibility method of electric vehicle DC charging control circuit is as follows:
  • connection structure of the equivalent resistance is as follows:
  • the equivalent resistance R' is connected in parallel between the CC1 line and the PE line of the CC1 loop or/and the equivalent resistance R" is connected in series on the CC1 line of the CC1 loop.
  • connection structure of the equivalent resistance is as follows:
  • the equivalent resistance Rc' is connected in parallel between the CC2 line and the PE line of the CC2 loop or/and the equivalent resistance Rc" is connected in series on the CC2 line of the CC2 loop.
  • the equivalent resistance is a single resistance, or the equivalent resistance is formed by connecting multiple resistances in series, parallel or mixed, with various structures, and only needs to be able to reach the corresponding resistance value.
  • the CC1 circuit and the CC2 circuit are respectively connected with several equivalent resistors matching the type of the charger, namely the CC1 line of the CC1 circuit and the PE
  • the equivalent resistance R' is connected in parallel between the lines or/and the equivalent resistance R" is connected in series on the CC1 line of the CC1 circuit.
  • the CC2 circuit is connected with a number of other types that match the type of the charger.
  • Effective resistance that is, the equivalent circuit is not connected to the CC1 circuit, and the equivalent resistance Rc' is connected in parallel between the CC2 line and the PE line of the CC2 circuit or/and the equivalent resistance Rc" is connected in series on the CC2 line of the CC2 circuit.
  • the electric vehicle DC charging control circuit is forward compatible with the circuit, including the CC1 connection line, the CC2 connection line and the PE connection line.
  • the two ends of the CC1 connecting line are respectively connected to the CC1 connecting line on the electric vehicle side and the CC1 connecting line on the charger side.
  • the circuit forms the CC1 circuit, and the CC2 connection line, the CC2 connection line on the electric vehicle side, the CC2 connection line on the charger side, the PE connection line, the PE connection line on the electric vehicle side and the PE connection line on the charger side form the CC2 circuit; CC1 circuit or/and CC2 Several equivalent resistors matched with the type of charger are connected to the loop.
  • the CC1 loop and the CC2 loop are respectively connected with several equivalent resistors matching the type of the charger.
  • the CC2 circuit is connected with several equivalent resistors that match the type of the charger.
  • connection structure of the equivalent resistance is as follows:
  • the CC1 connection line on the machine side constitutes the CC1 line
  • the PE connection line, the PE connection line on the electric vehicle side and the PE connection line on the charger side constitute the PE line.
  • connection structure of the equivalent resistance is as follows:
  • connection structure of the equivalent resistance is as follows: between the CC1 connection line and the PE connection line Connect the equivalent resistance R′ in parallel or/and connect the equivalent resistance R′′ in series on the CC1 connection line; when the CC2 loop is connected with an equivalent resistance, the connection structure of the equivalent resistance is as follows: connect the CC2 connection line and the PE connection line The equivalent resistance Rc' is connected in parallel or/and the equivalent resistance Rc" is connected in series on the CC2 connection line.
  • the forward compatible circuit of the electric vehicle DC charging control circuit also includes a CP connection line.
  • the two ends of the CP connection line are respectively connected to the CC2 connection line on the electric vehicle side and the CP connection line on the charger side.
  • Equivalent resistance Rd is connected in series.
  • the converter includes the forward compatible circuit of the above-mentioned electric vehicle DC charging control circuit, all equivalent resistances of the forward compatible circuit of the electric vehicle DC charging control circuit are set in the converter, and the converter is connected to the vehicle socket on the electric vehicle side and the vehicle plug on the charger side.
  • the converter can be further simplified, that is, the equivalent circuit of the remaining part is arranged in the converter.
  • the resistance accuracy of the converter and the DC charging control circuit of the ChaoJi electric vehicle is recommended to be 1%, and the pull-up voltage accuracy is recommended to be 5%.
  • the circuit includes a CC1 connection line, a CC2 connection line, and a PE connection line.
  • the connection port of the side CC1 connection line, the subsequent ports are similar) and the CC1 end of the charger side, the two ends of the CC2 connection line are respectively connected to the CC2 end of the electric vehicle side and the CC2 end of the charger side, and the two ends of the PE connection line are respectively connected to the electric vehicle.
  • the equivalent resistance R′ is connected in parallel between the CC1 connection line and the PE connection line
  • the equivalent resistance R′′ is connected in series on the CC1 connection line
  • the CC2 connection line and the PE connection line are connected in parallel
  • Equivalent resistance Rc' is connected in series on the CC2 connection line.
  • one end of the equivalent resistance Rc′′ is connected to the CC2 end of the electric vehicle side, the other end of the equivalent resistance Rc′′ is connected to the connection point between the equivalent resistance Rc′ and the CC2 connection line; one end of the equivalent resistance R′′ is connected to the electric vehicle side At the CC1 end, the other end of the equivalent resistance R′′ is connected to the connection point between the equivalent resistance R′ and the CC1 connection line.
  • Monitoring point 3 switch Sv, resistor Rv and power supply U2 (usually 12V) are connected in series between the CC2 terminal and the PE terminal, and the CC1 terminal and the PE terminal are connected in series.
  • a diode D1, a monitoring point 2, a switch S2 and a resistor R4 are connected in series between them.
  • the anode of the diode D1 is connected to the CC1 terminal.
  • the monitoring point 3 and the monitoring point 2 are connected to the electric vehicle controller, and the voltages on the CC2 and CC1 lines are monitored through the monitoring point 3 and the monitoring point 2 respectively.
  • Diode D1 is optional and is suitable for charging with CCS chargers.
  • the resistance of the above equivalent resistances is related to the resistance of the resistance Rv and the type of the charger.
  • the pull-up voltage U2 in the electric vehicle is determined by the design of the electric vehicle manufacturer.
  • Resistor Rv is set at 1000 ⁇ .
  • the given monitoring point voltage values are all nominal values.
  • the configuration parameters of each system and converter are shown in Table 1:
  • the resistance value of the equivalent resistance Rc' is 200 ⁇
  • the resistance value of the equivalent resistance Rc′′ is 100 ⁇
  • the equivalent resistance Rd is 400 ⁇
  • the CC1 loop The equivalent resistance R' above is not connected in parallel between the CC1 connection line and the PE connection line, but is equivalent to the electric vehicle side, that is, the resistance value of R4c in the figure is 130 ⁇ .
  • the optimal case is to connect directly in parallel between the CC1 connection wire and the PE connection wire.
  • switch S11 When CHAdeMO 2.0 and below chargers, converters, and ChaoJi electric vehicles are not connected, the initialization states of switches d1, d2, S2' and Sv are all disconnected, and switch S2 is set to position 0, that is, no resistor R4c or R4, the electric vehicle is in a dormant state or active state, the monitoring point 2 in the electric vehicle is 0V, and charging is not allowed; the voltage of monitoring point 1 in the charger is 12V, and the voltage of monitoring point CS is 0V, and charging is not allowed.
  • the converter is connected to the socket of the electric vehicle, the electric vehicle is in a dormant state or active state, the voltage of monitoring point 2 in the electric vehicle is 0V, and charging is not allowed; the voltage of monitoring point 1 in the charger is 12V, and the voltage of monitoring point CS is 0V, Charging is not allowed.
  • the charger is completely connected with the converter and the electric vehicle, the monitoring point 2 in the electric vehicle is 11.88V, charging is not allowed, and the dormant electric vehicle is activated; the voltage of the monitoring point 1 in the charger is 11.88V, and the voltage of the monitoring point CS is 11.88V. 0V, charging is not allowed.
  • the vehicle closes the switch Sv, detects that the voltage of monitoring point 3 is 2V, confirms that the CC2 loop is connected normally, and judges that the type of the connected charger is Japan CHAdeMO 2.0 and below, the monitoring point 2 in the electric vehicle is 11.88V, and charging is not allowed ;
  • the voltage of monitoring point 1 in the charger is 11.88V, and the voltage of monitoring point CS is 1V, and charging is not allowed;
  • the switch Sv is closed, it is detected that the voltage of monitoring point 3 is 6V, the CC2 circuit is confirmed to be connected normally, and it is determined that the type of the connected charger is a ChaoJi charger, that is, the converter is not used for charging, and go to step S19;
  • the switch Sv is closed, the voltage of monitoring point 3 is detected to be 4V or 8V, confirm that the CC2 circuit is connected normally, and judge that the type of the connected charger is a charger of another version, and go to the corresponding charging process.
  • monitoring point 1 when the voltage of monitoring point 1 is detected to be 9.00V, it is considered that it is connected to the electric vehicle normally and charging is allowed. During normal charging, the nominal voltage of monitoring point 1 should be 6.00V. For CCS1 chargers, it should also be detected. The monitoring point PP voltage is 1.51V. In order to be compatible with the CCS charger, the equivalent resistance settings are shown in Figures 4 and 5.
  • CCS1 charger the equivalent resistance Rc′′ is 2100 ⁇ , and the resistance value of the equivalent resistance Rc′ is 360 ⁇ ;
  • CCS2 charger the equivalent resistance Rc′′ is 300 ⁇ , and the resistance value of the equivalent resistance Rc′ is 250 ⁇ .
  • the electric vehicle side detects that the voltage of monitoring point 3 is 4V, and the electric vehicle confirms that it is connected to a CCS charger, first keep switch S2 off (close switch S2 after waiting for the charger to be ready for charging), and the electric vehicle enters the CCS charging process.
  • the CCS charger detects that the voltage of monitoring point 1 is 9V, confirms that the interface connection is normal, and enters the CCS charging process.
  • the switch S3 in the charger is a normally closed switch (only for CCS1 chargers), and the initialization of switches S2, S2', Sv and Sv' in the electric vehicle
  • the state is disconnected, the electric vehicle is in dormant state or active state, the monitoring point 2 in the electric vehicle is 0V, and charging is not allowed; the voltage of monitoring point 1 in the charger is 12V, and the voltage of monitoring point PP is 0V, and charging is not allowed.
  • the converter is connected to the socket of the electric vehicle, the electric vehicle is in a dormant state or active state, the voltage of the monitoring point 2 in the electric vehicle is 0V, and charging is not allowed; the voltage of the monitoring point 1 in the charger is 12V, and the voltage of the monitoring point PP is 0V ( Only available for CCS1 chargers), charging is not allowed.
  • the charger is completely connected with the converter and the electric vehicle, and the electric vehicle is in a dormant state or active state.
  • the monitoring point 2 in the electric vehicle is 11.2V, and charging is not allowed; the voltage of the monitoring point 1 in the charger is 11.9V, and monitoring The point PP voltage is 0V (only for CCS1 chargers), charging is not allowed, and the dormant electric vehicle is activated.
  • the electric vehicle closes the switch Sv, detects that the voltage of monitoring point 3 is 4V, confirms that the CC2 circuit is connected normally, and judges that the type of the connected charger is the European and American CCS system, and the monitoring point 2 in the electric vehicle is 11.2V, and charging is not allowed; charging;
  • the voltage of monitoring point 1 in the machine is 11.9V, and the voltage of monitoring point PP is 1.12V (only for CCS1 chargers), and charging is not allowed.
  • the switch Sv is closed, the voltage of monitoring point 3 is detected to be 2V or 8V, confirm that the CC2 circuit is connected normally, and judge that the type of the connected charger is a charger of another version, and go to the corresponding charging process.
  • the monitoring point 2 in the electric vehicle is 5.27V
  • the monitoring point 3 voltage is 5.39V
  • the monitoring point 1 voltage in the charger is 5.97V
  • the monitoring point PP voltage is 1.51V (only for CCS1 charger is available); the charging process of both sides of the car pile entering the European and American CCS charging system.
  • the resistance value of the equivalent resistance Rc' is 1000 ⁇ , and the resistance value of the equivalent resistance Rc′′ is 1500 ⁇ .
  • the electric vehicle side detects that the voltage of monitoring point 3 is 8V.
  • the electric vehicle confirms that it is connected to the GB 2015 charger.
  • the electric vehicle switches to the GB 2015 circuit and enters the charging process.
  • the GB 2015 charger detects that the voltage of monitoring point 1 is 4V. , confirm that the interface connection is normal, and enter the GB 2015 charging process.
  • the switch S in the vehicle plug of the charger is a normally closed switch, and the initialization states of switches S2' and Sv in the electric vehicle are both disconnected, and the switch S2 is set to Position 0, that is, the resistor R4c' or R4 is not connected, the electric vehicle is in the dormant state or active state, the monitoring point 2 in the electric vehicle is 0V, the monitoring point 3 voltage is 0V, and charging is not allowed; the monitoring point 1 voltage in the charger is 6V , charging is not allowed.
  • the converter is connected to the socket of the electric vehicle, the electric vehicle is in a dormant state or an active state, the voltage of monitoring point 2 in the electric vehicle is 0V, the voltage of monitoring point 3 is 0V, and charging is not allowed; the voltage of monitoring point 1 in the charger is 6V, Charging is not allowed.
  • the charger is completely connected to the converter and the electric vehicle, the monitoring point 2 in the electric vehicle is 5.97V, the electric vehicle in dormancy is activated, the voltage of the monitoring point 3 is 0V, and charging is not allowed; the voltage of the monitoring point 1 in the charger is 5.97V, charging is not allowed.
  • the electric vehicle closes the switch Sv, detects that the voltage of monitoring point 3 is 8V, confirms that the CC2 circuit is connected normally, and judges that the type of the connected charger is China GB 2015 system, the monitoring point 2 in the electric vehicle is 5.97V, and charging is not allowed; The voltage of monitoring point 1 in the charger is 5.97V, and charging is not allowed.
  • the switch Sv is closed, the voltage of monitoring point 3 is detected to be 6V, it is confirmed that the CC2 loop is connected normally, and it is determined that the type of the connected charger is a ChaoJi charger, that is, the converter is not used for charging, and the process goes to step S37;
  • the switch Sv is closed, the voltage of monitoring point 3 is detected to be 2V or 4V, confirm that the CC2 circuit is connected normally, and judge that the type of the connected charger is a charger of another version, and go to the corresponding charging process.
  • the switch Sv is closed on the electric vehicle side, and the voltage of monitoring point 3 is collected. If the voltage of monitoring point 3 is within the range corresponding to the CHAdeMO charger, the electric vehicle switches to the CHAdeMO charging process, the switch S2 is switched to the connection resistor R4c, and the charger side confirms whether the voltage of monitoring point 1 is reliably connected and allows safe charging If it is within the range, enter the CHAdeMO charging process, otherwise it will alarm.
  • the electric vehicle switches to the CCS charger charging process, closes the switch S2', waits for the charger to be ready for charging, and then switches the switch S2 to the connection resistor R4, and the charger side passes through Confirm whether the voltage of monitoring point 1 is within the range of reliable connection and safe charging. If it is, enter the CCS charging process, otherwise it will alarm. If the voltage of monitoring point 3 is within the range corresponding to the GB 2015 charger, the electric vehicle switches to the charging process of the GB 2015 charger, the switch S2 is switched to the connection resistor R4c', and the charger side confirms whether the voltage of monitoring point 1 is reliable or not.
  • the electric vehicle switches to the ChaoJi charger charging process, closes the switch S2', waits for the charger to be ready for charging, and then switches the switch S2 to the connection resistor R4, and the charger side passes through Confirm whether the voltage of monitoring point 1 is within the allowable charging range. If so, enter the ChaoJi charging process, otherwise a fault alarm will be issued. If the voltage of monitoring point 3 is not within the corresponding range of CHAdeMO charger, CCS charger, GB 2015 charger and ChaoJi charger, a fault alarm will be issued.
  • a vehicle circuit with forward compatibility can be further designed.
  • monitoring point 3 switch Sv, resistor Rv and power supply U2 (usually 12V are connected in series between the CC2 terminal and the PE terminal).
  • the series circuit of resistor Rv' and switch Sv' is connected in parallel with resistor Rv, diode D1, monitoring point 2, resistor R3', switch S2' and resistor R4' are connected in series between CC1 terminal and PE terminal, single pole four throw
  • the moving contact of switch S2 is connected to monitoring point 2, and the four static contacts of the moving contact of the single-pole four-throw switch are respectively floating, connected to resistors R4 (connected to ChaoJi or CCS), R4c (connected to CHAdeMO) and R4c' (connected to GB 2015), resistors R4, R4c and R4c' are connected to the PE terminal.
  • the recommended parameter configuration is shown in Table 2.
  • an equivalent resistance is set on the CC1 loop or/and the CC2 loop.
  • the type of the charger is determined by monitoring the voltage on the CC2 line, and the charging process is performed according to the type of the charger.
  • the charger side by monitoring the CC1 The voltage on the line determines whether the charger is reliably connected to allow safe charging, so that the electric vehicle can be charged with all common chargers on the market, and the forward compatibility of the DC charging control pilot circuit is realized.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

L'invention porte sur un procédé et sur un circuit de compatibilité vers l'avant pour un circuit de commande de charge en courant continu d'un véhicule électrique, ainsi que sur un convertisseur. Le procédé consiste : à agencer des résistances équivalentes (Rd, R', Rc', Rc") sur une boucle de courant continu 1 (CC1) et/ou une boucle de CC2 ; sur le côté d'un véhicule électrique, à déterminer le type d'un chargeur au moyen de la surveillance de la tension sur une ligne de CC2, et à réaliser un flux de charge selon le type du chargeur ; et sur le côté du chargeur, au moyen de la surveillance de la tension sur une ligne de CC1, à déterminer si le chargeur est connecté de manière fiable pour permettre une charge sûre. Un véhicule électrique peut être chargé avec tous les chargeurs communs sur le marché, ce qui permet de réaliser une compatibilité vers l'avant d'un circuit de guidage de commande de charge à courant continu.
PCT/CN2020/134165 2020-08-18 2020-12-07 Procédé et circuit de compatibilité vers l'avant pour un circuit de commande de charge en courant continu d'un véhicule électrique, et convertisseur WO2022036935A1 (fr)

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