CN115071464B

CN115071464B - Charger controller supporting multi-standard charging interface and charger

Info

Publication number: CN115071464B
Application number: CN202210826150.2A
Authority: CN
Inventors: 陈力; 邓礼宽; 柏建国; 张燕飞
Original assignee: Shenzhen Youyou Green Energy Co ltd
Current assignee: Shenzhen Youyou Green Energy Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-03-14
Anticipated expiration: 2042-07-13
Also published as: CN115071464A

Abstract

The invention relates to a charger controller supporting a multi-standard charging interface, which comprises: the universal temperature port is used for connecting the European standard charging gun, the American standard charging gun and the national standard charging gun, and the temperature sampling module is electrically connected with the universal temperature port; the first communication module is used for connecting a first communication port of the European standard charging gun, the American standard charging gun and the national standard charging gun and is electrically connected with the first communication port; the gun locking module is used for connecting the national standard charging gun and the daily standard charging gun and electrically connecting the gun locking ports; a second communication port for connecting the national standard charging gun and the daily standard charging gun; and a control module. The invention can multiplex the public port, thereby realizing the function of supporting the multi-standard charging interface with smaller size, simple configuration and low cost. The charger controller can be compatible with national standard, daily standard, european standard and American standard, so that the compatibility is good.

Description

Charger controller supporting multi-standard charging interface and charger

Technical Field

The invention relates to the field of charging, in particular to a charger controller supporting a multi-standard charging interface and a charger comprising the charger controller supporting the multi-standard charging interface.

Background

Along with the development of electric automobile technology, the quantity of electric automobiles is more and more, and electric automobile charging stations similar to gas station functions are more and more common. Electric vehicle charging stations typically include multiple chargers. The electric vehicle and the charger are communicated by adopting a certain charging standard. And the charging standards of all regions around the world are different. The global mainstream direct current charging interface (gun) standards include national standard, daily standard, european standard and American standard. Therefore, the international charger controller cannot meet the requirement of overseas charging. In order to solve the problem, a scheme is generally adopted in which a set of national standard controller and a set of communication protocol converter shown in fig. 1A and 1B are used to implement connection and protocol conversion between charging guns and charger controllers of each standard, but the scheme has the defects of complex configuration, high cost, poor compatibility and the like.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a charger controller supporting a multi-standard charging interface, which reuses a common port to realize the multi-standard charging interface supporting function with a smaller size, simple configuration and low cost, aiming at the above defects of the prior art.

The technical scheme adopted by the invention for solving the technical problem is to construct a charger controller supporting a multi-standard charging interface, which comprises the following steps:

the universal temperature port is used for connecting the European standard charging gun, the American standard charging gun and the national standard charging gun, and the temperature sampling module is electrically connected with the universal temperature port;

the first communication module is used for connecting a first communication port of the European standard charging gun, the American standard charging gun and the national standard charging gun and is electrically connected with the first communication port;

the gun locking module is used for connecting the national standard charging gun and the daily standard charging gun and electrically connecting the gun locking ports;

a second communication port for connecting the national standard charging gun and the daily standard charging gun; and

the control module is used for controlling the temperature sampling module, the first communication module, the gun locking module and/or the second communication port to work based on charging communication protocols corresponding to the European standard charging gun, the Japanese standard charging gun, the American standard charging gun and the national standard charging gun which are connected with the universal temperature port, the first communication port, the gun locking port or the second communication port.

The charger controller supporting the multi-standard charging interface further comprises: the national standard special port is used for connecting the national standard charging gun;

the control module is electrically connected with the American standard special port, the Japanese standard special port and the national standard special port.

In the charger controller supporting the multi-standard charging interface, the temperature sampling module comprises a first sampling resistor, a second sampling resistor, a third sampling resistor, a sampling chip, a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor, a fourth voltage dividing resistor, a fifth voltage dividing resistor and a sixth voltage dividing resistor, the first sampling resistor is arranged at the positive electrode of the charging gun, the second sampling resistor is arranged at the negative electrode of the charging gun, the third sampling resistor is arranged in a case of the charger, first ends of the first sampling resistor, the second sampling resistor and the third sampling resistor are connected with the negative electrode of a power supply respectively, a second end of the first sampling resistor is connected with the positive electrode of the power supply through the first voltage dividing resistor, the second end of the second sampling resistor is connected with the positive electrode of the power supply through the second voltage dividing resistor to input a first voltage sampling value, a second end of the second sampling resistor is connected with the positive electrode of the power supply through the third voltage dividing resistor to input a sampling chip through the fourth voltage dividing resistor to input a second voltage sampling value, a second end of the third sampling resistor is connected with the positive electrode of the sampling resistor to input a voltage sampling value, and the fifth voltage dividing resistor to control voltage sampling value, and the sampling module is electrically connected with the sampling value, and the sampling value control voltage control module, and the sampling module is connected with the sampling resistor.

In the charger controller supporting the multi-standard charging interface, the first communication module includes an isolation transformer, a PLC communication unit, an isolation voltage-dropping unit, an optocoupler, an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor, a first input end of the isolation transformer is connected to a first connection port of the first communication port, a second input end of the isolation transformer is connected to a second connection port of the first communication port, an output end of the isolation transformer is connected to the control module through the PLC communication unit, an input end of the isolation voltage-dropping unit is connected to the first connection port, an output end of the isolation voltage-dropping unit is connected to the control module to output a voltage detection signal, a first end of the first resistor is connected to the first connection port, and a second end of the operational amplifier is connected to an output end of the operational amplifier, a forward input end of the operational amplifier is connected to a collector of the optocoupler through the second resistor, a reverse input end of the operational amplifier is connected to a first end of the third resistor and the fourth resistor, a second end of the third resistor is connected to ground, a second end of the fourth resistor is connected to a first end of the first power supply and a first end of the optocoupler, a second end of the operational amplifier is connected to an emitter of the operational amplifier, and a second end of the optocoupler is connected to ground;

the anode of the transmitting end of the optical coupler is connected with a second power supply, the cathode of the transmitting end of the optical coupler is connected with the control module to receive a communication control signal, or the anode of the transmitting end of the optical coupler is connected with the control module to receive the communication control signal, and the cathode of the transmitting end of the optical coupler is grounded;

the control module controls the communication of the European standard charging gun or the American standard charging gun based on the isolation transformer, the PLC communication unit, the optical coupler and the operational amplifier, and controls the communication of the national standard charging gun based on the optical coupler and the operational amplifier.

In the charger controller supporting the multi-standard charging interface, the gun locking module comprises an intermediate relay, a comparator, a first optocoupler, a second optocoupler, a first switch tube, a second switch tube, a first gun locking resistor, a second gun locking resistor, a third gun locking resistor, a fourth gun locking resistor, a fifth gun locking resistor, a sixth gun locking resistor and a seventh gun locking resistor;

the first end of a control coil of the intermediate relay is connected with a third power supply, the second end of the control coil is connected with the first end of a first switch tube, a first moving contact is connected with a first connecting port of the gun locking port, a second moving contact is connected with a second connecting port of the locking port, a first normally closed contact and a second normally open contact are connected with the third power supply, and a second normally closed contact and a first normally open contact are connected with the first end of a second switch tube; the control end of the first switch tube receives a first control signal, and the second end of the first switch tube is grounded; the second end of the second switch tube is connected with the reverse input end of the comparator and is grounded through the first gun locking resistor;

the positive input end of the comparator is connected with the third power supply through the second gun locking resistor and is grounded through the third gun locking resistor; the output end of the comparator is connected with the third power supply through the fourth gun locking resistor, the output end of the comparator is simultaneously connected with the cathode of the transmitting end of the first optocoupler, the anode of the transmitting end of the first optocoupler is connected with the third power supply through the fifth gun locking resistor, the emitter of the receiving end is grounded, and the collector of the receiving end is connected with the second power supply through the sixth gun locking resistor;

the control end of the second switch tube is connected with the emitter of the receiving end of the second optocoupler through the seventh gun locking resistor, the collector of the receiving end of the second optocoupler is connected with the third power supply through the eighth gun locking resistor, the anode of the transmitting end receives a second control signal, and the cathode of the transmitting end is grounded;

the control module controls the day standard charging gun to lock the gun based on the second control signal, receives a gun locking state from a receiving end collector of the first optocoupler, and controls the national standard charging gun to lock the gun based on the first control signal and the second control signal.

In the charger controller supporting the multi-standard charging interface, the second communication port is a first CAN communication port.

The charger controller supporting the multi-standard charging interface further comprises a second CAN communication port, an RS485 communication port, an RS232 communication port, a hard connection port and an active output port.

In the charger controller supporting the multi-standard charging interface, the charging communication protocol comprises a DIN SPEC 70121 protocol, an ISO15118 protocol, a CHAdemo 2.0 protocol and a GB/T27930 protocol.

The charger controller is characterized by comprising a charger controller supporting a multi-standard charging interface.

The invention provides a charger controller supporting multi-standard charging interfaces in a 'least common multiple' compatible mode by comparing the difference and the common part of each standard interface, wherein the charger controller stores European standard, american standard, national standard and Japanese standard charging protocols and reuses a common port, thereby realizing the function of supporting the multi-standard charging interfaces with smaller size, simple configuration and low cost. The charger controller can be compatible with national standard, daily standard, european standard and American standard, so that the compatibility is good.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1A is a state of the art international charger controller plus european standard communication protocol converter;

FIG. 1B is a prior art national standard charger controller plus a daily standard communication protocol converter;

FIG. 2 is a schematic diagram of the standard interfaces of the existing European standard charging gun, japanese standard charging gun, american standard charging gun and national standard charging gun;

FIG. 3 is a functional block diagram of a charger controller supporting a multi-standard charging interface in accordance with a preferred embodiment of the present invention;

FIG. 4 shows a circuit diagram of a temperature sampling module according to a preferred embodiment of the present invention;

fig. 5 shows a circuit diagram of a first communication module according to a preferred embodiment of the invention;

fig. 6 is a schematic diagram of another connection of the optocouplers of the first communication module shown in fig. 5;

FIG. 7 shows a circuit diagram of a gun locking module according to a preferred embodiment of the present invention;

FIG. 8 is a schematic diagram of a charger controller supporting a multi-standard charging interface in accordance with a preferred embodiment of the present invention;

fig. 9 is a schematic connection diagram of a charger controller supporting a multi-standard charging interface for a euro/U standard charging gun according to a preferred embodiment of the present invention;

fig. 10 is a schematic connection diagram of a charger controller supporting a multi-standard charging interface for a day-standard charging gun according to a preferred embodiment of the present invention;

fig. 11 is a connection diagram of the charger controller supporting the multi-standard charging interface for the national standard charging gun according to the preferred embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The global mainstream direct current charging interface (gun) standards include national standard, daily standard, european standard and American standard. The invention relates to a charger controller supporting a multi-standard charging interface, which comprises: the universal temperature port is used for connecting the European standard charging gun, the American standard charging gun and the national standard charging gun, and the temperature sampling module is electrically connected with the universal temperature port; the first communication module is used for connecting a first communication port of the European standard charging gun, the American standard charging gun and the national standard charging gun and is electrically connected with the first communication port; the gun locking module is used for connecting the national standard charging gun and the daily standard charging gun and electrically connecting the gun locking ports; a second communication port for connecting the national standard charging gun and the daily standard charging gun; the control module is used for controlling the temperature sampling module, the first communication module, the gun locking module and/or the second communication port to work based on charging communication protocols corresponding to the European standard charging gun, the Japanese standard charging gun, the American standard charging gun and the national standard charging gun which are connected with the universal temperature port, the first communication port, the gun locking port or the second communication port. The invention provides a charger controller supporting multi-standard charging interfaces in a 'least common multiple' compatible mode by comparing the difference and the common part of each standard interface, wherein the charger controller stores European standard, american standard, national standard and Japanese standard charging protocols and reuses a common port, thereby realizing the function of supporting the multi-standard charging interfaces with smaller size, simple configuration and low cost. The charger controller can be compatible with national standard, daily standard, european standard and American standard, so that the compatibility is good.

Fig. 2 is a schematic diagram of standard interfaces of a conventional european standard charging gun, a japanese standard charging gun, a american standard charging gun and a national standard charging gun. As shown in fig. 2, the european standard charging gun includes a DC + interface, a DC-interface, a PE interface, a WK1 interface, a WK2 interface, a WK3 interface, a WK4 interface, and a CP interface. The American standard charging gun comprises a DC + interface, a DC-interface, a PE interface, a WK1 interface, a WK2 interface, a WK3 interface, a WK4 interface, a CP interface and a PP interface. The national standard charging gun comprises a DC + interface, a DC-interface, a PE interface, a WK1 interface, a WK2 interface, a WK3 interface and a WK4 interface, a CC1 interface, an EL + interface, an EL-interface, an S + interface, an S-interface, an A + interface, an A-interface, an RS + interface and an RS-interface. The day-standard charging gun comprises a DC + interface, a DC-interface, a PE interface, an Elock + interface, an Elock-interface, a Signal1 interface, a Signal2 interface, a Permssion interface, a Proximitty interface, a CAN-H interface and a CAN-L interface.

For interfaces of the European standard charging gun, the Japanese standard charging gun, the American standard charging gun and the national standard charging gun which adopt the same signal to carry out logic judgment or function output, the interfaces can share the same port of the charger controller.

The DC + interface, the DC-interface and the PE interface of the European standard charging gun, the Japanese standard charging gun, the American standard charging gun and the national standard charging gun are the same interface, so the interfaces can directly share the port.

To the rifle temperature acquisition interface that charges of european standard rifle, american standard rifle and national standard rifle that charges, WK1 interface, WK2 interface, WK3 interface and WK4 interface promptly, owing to all adopt the thermal resistance to detect, can share port 1, general temperature port promptly and the temperature sampling module that the cooperation corresponds accomplishes temperature acquisition.

The communication interfaces of the european standard charging gun, the american standard charging gun and the national standard charging gun, i.e., the CP interface of the european standard charging gun, the american standard charging gun and the CC1 interface of the national standard charging gun, are analyzed as follows; for the CP interface, the voltage amplitude of the charging process is 12V → 9V → 6V; for the CC1 interface, a voltage amplitude value of 12V → 9V → 4V changes exist in the connection confirmation process; therefore, the voltage changes of DC12V and below can share the same port 2, namely the first communication port, and the communication is completed by matching with the corresponding first communication module.

For the national standard charging gun and the daily standard charging gun, because the working power supplies of the gun locking electronic lock are both DC12V, the gun locking interfaces, namely the EL + interface, the EL-interface of the national standard charging gun, the Elock + interface and the Elock-interface of the daily standard charging gun can share the same port 3, namely the gun locking port, and are matched with the corresponding gun locking modules to complete the gun locking electronic lock.

For the national standard charging gun and the daily standard charging gun, because the communication connection CAN adopt CAN interfaces, the S + interface, the S-interface and the CAN-H interface and the CAN-L interface of the daily standard charging gun of the national standard charging gun CAN share the same port 4, namely the second communication port.

Based on this, we constructed the charger controller shown in fig. 3 that supports the multi-standard charging interface. As shown in fig. 3, the charger controller supporting the multi-standard charging interface includes a universal temperature port 110 for connecting a european standard charging gun, a american standard charging gun, and a national standard charging gun, and a temperature sampling module 210 electrically connected to the universal temperature port 110; a first communication port 120 for connecting the european standard charging gun, the american standard charging gun and the national standard charging gun, and a first communication module 220 electrically connected to the first communication port 120; a gun locking port 130 for connecting the national standard charging gun and the japanese standard charging gun and a gun locking module 230 electrically connected to the gun locking port 130; a second communication port 140 for connecting the national standard charging gun and the japanese standard charging gun; and a control module 300 for controlling the operation of the temperature sampling module 210, the first communication module 220, the gun locking module 230 and/or the second communication port 140 based on the charging communication protocol corresponding to the european standard charging gun, the japanese standard charging gun, the american standard charging gun and the national standard charging gun call connected to the universal temperature port 110, the first communication port 120, the gun locking port 130 or the second communication port 140.

Here, the control module 300 may employ any controller, control chip known in the art, in which all protocols and control programs known to be required for completing communication and control of the european standard charging gun, the japanese standard charging gun, the american standard charging gun, and the national standard charging gun, such as the DIN SPEC 70121 protocol, the ISO15118 protocol, the CHAdeMO 2.0 protocol, and the GB/T27930 protocol, are integrated. Here, the invention is characterized in that the sharing of the ports, the specific control protocol and the control process, can refer to the charger control module known in the prior art. In order to avoid obscuring the inventive subject matter of the present invention, it is not described again here.

Fig. 4 shows a circuit diagram of a preferred embodiment of a temperature sampling module 210 fitted with a universal temperature port 110 for connecting a european standard charging gun, a american standard charging gun and a national standard charging gun. As shown in fig. 4, the temperature sampling module 210 includes a sampling resistor RS1, a sampling resistor RS2, a sampling resistor RS3, a sampling chip 211, a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor, a fourth voltage dividing resistor, a fifth voltage dividing resistor, and a sixth voltage dividing resistor. The sampling resistor RS1 is arranged at the anode of the charging gun, the sampling resistor RS2 is arranged at the cathode of the charging gun, and the sampling resistor RS3 is arranged in a case of the charger. The charging gun referred to herein may be a european, american or national standard charging gun. Sampling resistor RS1 sampling resistor RS2 with sampling resistor RS 3's first end is connected respectively the power negative pole, sampling resistor RS 1's second end warp divider resistance R11 connects the power anodal, connects through divider resistance R12 sampling chip 211 is with the first voltage sampling value of input, sampling resistor RS 2's second end warp divider resistance R13 connects the power anodal, connects through divider resistance R21 sampling chip 211 is with the input second voltage sampling value, sampling resistor RS 3's second end warp divider resistance R22 connects the power anodal, connects through divider resistance R23 sampling chip 211 is with the input third voltage sampling value. The sampling chip 211 converts the first voltage sample value, the second voltage sample value and the third voltage sample value into digital signals, which may be any suitable digital converter, and then transmits the digital signals to the control module 300 electrically connected thereto. The control module 300 calculates a corresponding temperature change value based on a built-in program, the first voltage sampling value, the second voltage sampling value, and the third voltage sampling value. For example, the sampling resistors RS1, RS2, and RS3 are thermistors, and the resistance values thereof change with temperature, so that the corresponding first voltage sampling value, second voltage sampling value, and third voltage sampling value also change, and the temperature change can be calculated according to the change values of the first voltage sampling value, the second voltage sampling value, and the third voltage sampling value, and the temperature-resistance value relationship of the thermistors. Any suitable thermistor and corresponding calculation process may be used to implement the temperature acquisition process.

Fig. 5 shows a circuit diagram of a first communication module fitted with a first communication port for connecting a european standard charging gun, a american standard charging gun and a national standard charging gun. As described above, in the CP interface of the european standard charging gun and the american standard charging gun, there is a voltage amplitude 12V → 9V → 6V change in the charging process, and in the CC1 interface of the national standard charging gun, there is a voltage amplitude 12V → 9V → 4V change in the connection confirmation process; therefore, the voltages are all DC12V and below, and they share the first communication port and complete the communication process with the first communication module 220 shown in fig. 5.

As shown in fig. 5, the first communication module 220 includes an isolation transformer 221, a PLC communication unit 222, an isolation voltage-reducing unit 223, an optical coupler OP1, an operational amplifier PA1, a resistor R14, a resistor R13, a resistor R11, and a resistor R12. A first input end of the isolation transformer 221 is connected to the first connection port a of the first communication port 120, a second input end thereof is connected to the second connection port B of the first communication port 120, and an output end thereof is connected to the control module 300 via the PLC communication unit 222. The input end of the isolation voltage-reducing unit 223 is connected to the first connection port a, and the output end is connected to the control module 300 to output a voltage detection signal. Resistance R1's first end is connected first connection port A, second end are connected operational amplifier PA 1's output, operational amplifier PA 1's forward input end warp resistance R14 is connected opto-coupler OP 1's receiving terminal collecting electrode, reverse input end connecting resistance R13 and resistance R11's first end, resistance R13's second end ground GND, resistance R11's second end connects first power +5V and resistance R12's first end, resistance R12's second end is connected operational amplifier PA 1's forward input end, opto-coupler OP 1's receiving terminal emitter ground GND. The anode of the transmitting end of the optical coupler OP1 is connected with +3.3V of a second power supply, and the cathode of the transmitting end is connected with the control module 300 to receive a communication control signal. Since the resistor R1=1K Ω, and the positive electrode of the power supply of the operational amplifier is connected to a voltage of +12V and the negative electrode thereof is connected to a voltage of-12V, the positive input is output at +12V, and the negative input is output at-12V. The optocoupler OP1 is conducted when receiving a low level signal sent by the control module. The control module 300 controls the european standard charging gun or the american standard charging gun to communicate based on the isolation transformer 221, the PLC communication unit 222, the optical coupler OP1, and the operational amplifier PA1, and controls the national standard charging gun to communicate based on the optical coupler OP1 and the operational amplifier PA 1.

The communication between the euro standard charging gun, the american standard charging gun, and the national standard charging gun will be described below with reference to fig. 5. Aiming at the charging process of the European standard and the American standard, resistors R2 and R3 and a switch S2 are arranged at a vehicle end, wherein R2=1.3K omega, R3=2.74K omega, the resistor R2 and the switch are connected in series and then connected with the resistor R3 in parallel, and the output of two ends of the R3 is divided into a CP end and a PE end of an American standard and European standard charging gun, which are respectively connected with a first connection port A and a second connection port B. When charging is applied to the european standard and the american standard, the electric vehicle sends out a PLC signal (i.e., the resistors R2, R3 and the switch S2) to be loaded to the PCL communication unit 222 through the isolation transformer 221. And the PCL communication unit converts it into a digital signal and then transmits it to the control module 300 for communication. In the charging process, the control module 300 sends a 3.3V high level or a 0V low level to control the on and off of the optocoupler OP1, and further control the operational amplifier PA1 to output a PWM waveform with an amplitude of DC12V or a + DC12V direct-current steady-state voltage. The voltage sample value obtained by the isolation step-down unit 223 is 12V as follows without gun insertion. About 9V when inserting the gun (switch S2 off). About 6V when the gun is plugged (switch S2 off).

Aiming at the national standard charging process, a vehicle robbery seat is generally provided with a resistor R4, a charging gun is provided with a resistor R2 and a switch S, and the resistor R2 is connected with the switch S in series and then is connected with the resistor R4 in parallel. R2-R4=1K Ω. When national standard charging is used, the control module 300 sends out 3.3V high level to control the optical coupler OP1 to be disconnected, and the operational amplifier PA1 directly outputs + DC12V direct current steady-state voltage. Voltage sampling values obtained by the isolation voltage reduction unit 223 are as follows without plugging the gun 12V; 9V (switch S is off) during gun insertion; when the gun is inserted, 4V (switch S is off). Compared with the traditional method that an oscillator is adopted to generate PWM waveform and + DC12V is switched through a switch, the circuit has higher compatibility, simplicity and controllability.

In another preferred embodiment of the present invention, the connection relationship of the optical couplers may be as shown in fig. 6. As shown in fig. 6, the anode of the transmitting terminal of the optical coupler OP1 is connected to the control module 300 to receive the communication control signal, and the cathode of the transmitting terminal is grounded to GND. In this embodiment, the optical coupler is turned on when receiving a low level transmitted by the control module 300, and is turned off when receiving a high level, the principle is similar to that of the embodiment shown in fig. 5, and thus, the description is not repeated here.

Fig. 7 shows a circuit diagram of a gun locking module according to a preferred embodiment of the present invention. As described above, for the national standard charging gun and the japanese standard charging gun, since the operating power supply of the gun locking electronic lock is DC12V, the gun locking interfaces, i.e., the EL + interface and the EL-interface of the national standard charging gun and the Elock + interface and the Elock-interface of the japanese standard charging gun, may share the same port 3, i.e., the gun locking port, and cooperate with the gun locking module 230 shown in fig. 7 to complete the gun locking electronic lock operation.

As shown in fig. 7, the gun locking module 230 includes an intermediate relay K1, a comparator U1, an optical coupler OP2, a triode Q1, a MOS transistor Q2, a gun locking resistor R1, a second gun locking resistor, a third gun locking resistor, a fourth gun locking resistor, a gun locking resistor R106, a gun locking resistor R107, and a seventh gun locking resistor. A first end of a control coil of the intermediate relay K1 is connected with a power supply DC12+, a second end of the control coil is connected with a collector electrode of the triode Q1, a moving contact K11 is connected with a first connection port Elock of the gun locking port 130, and the moving contact K12 is connected with a second connection port Elock-, a first normally closed contact and a second normally open contact of the locking port are connected with the power supply DC12+, the second normally closed contact and the first normally open contact are connected with a drain electrode of the MOS tube Q2; the base electrode of the triode Q1 receives a control signal D05, and the second end of the triode Q1 is grounded GND. The source electrode of the MOS tube Q2 is connected with the reverse input end of the comparator U1 and passes through the gun locking resistor R1 to be grounded GND. The positive input end of the comparator U1 is connected with the power supply DC12+ through the gun locking resistor R103 and is grounded GND through the gun locking resistor R104. The output end of the comparator U1 is connected with the power supply DC12+ through the gun locking resistor R105, the output end of the comparator U1 is simultaneously connected with the cathode of the transmitting end of the optical coupler OP1, the anode of the transmitting end of the optical coupler OP1 is connected with the power supply DC12+, the grounding GND of the emitting electrode of the receiving end and the collector electrode of the receiving end through the gun locking resistor R107, and the power supply is connected with a 3.3V power supply. The grid electrode of the MOS tube Q2 is connected with the receiving end emitter of the optical coupler OP2 through the gun locking resistor R108, the receiving end collector of the optical coupler OP2 is connected with the power supply DC12+, the transmitting end anode receiving control signal D04 and the transmitting end cathode grounding GND through the gun locking resistor R101. The control module 300 controls the day standard charging gun to lock the gun and receives a gun locking state from a receiving end collector of the optical coupler OP1 based on the control signal D04, and controls the national standard charging gun to lock the gun based on the control signal D05 and the control signal D04.

When the gun locking port 130 is matched with the gun locking module 230 shown in the figure and used for the electronic lock of the daily charge gun, the control module 300 outputs a high-level control signal D04 to drive the optical coupler OP2 to work, and then the control signal is conducted after being conducted and amplified through the MOS transistor Q2. At this time, the triode Q1 is not electrically conducted, so the intermediate relay K1 does not act, and its moving contacts K11 and K12 are kept in contact with the first normally closed contact and the second normally closed contact. The first connection port Elock + and the second connection port Elock are respectively connected with +12 voltage and ground GND. The electronic lock of the day label charging gun is electrically locked through a normally closed contact of the intermediate relay K1.

At this moment, because MOS pipe Q2 switches on, divide voltage DC12V voltage through resistance R1, can obtain voltage V1, comparator U1 can show the judgement signal of day mark charging gun's electronic lock operating condition through comparative voltage V1 and reference voltage V2 (be the partial pressure voltage of resistance R103 and R104), then after this judgement signal enlargies through opto-coupler OP2, send for control module 300 interface DI3 in order to judge electronic lock operating condition, control module did not send control signal D05 this moment.

When the gun locking port 130 is used in a single-holding electronic lock of a national standard charging gun in cooperation with the gun locking module 230, the operating principle of the electronic lock is the same as that of a japanese standard electronic lock, but the control module 300 does not determine the operating state of the electronic lock based on the signal received by the interface DI 3.

When the gun locking port 130 is matched with the gun locking module 230 shown in the figure and is used for a self-holding electronic lock of a national standard charging gun, the control module 300 outputs a high-level control signal D04 to drive the optical coupler OP2 to work, and then the control signal is conducted after being conducted and amplified through the MOS transistor Q2. At this time, the triode Q1 is not electrically conducted, so the intermediate relay K1 does not act, and its moving contacts K11 and K12 are kept in contact with the first normally closed contact and the second normally closed contact. The national standard charging gun electronic lock is electrically locked through a normally closed contact of the intermediate relay K1. After the charging is finished, the electronic lock needs to be unlocked, at this time, the control module 300 outputs a high-level control signal D05 to drive the triode Q1 to be switched on, at this time, the control coil N1 of the intermediate relay K1 is powered, the first connection port Elock + and the second connection port Elock are switched from the normally closed contact of the intermediate relay K1 to the normally open contact, the corresponding first connection port Elock + and the corresponding second connection port Elock-are respectively connected with +12 voltage and ground GND and switched to be connected with the ground GND and + DC12V, and the voltage reversal electronic lock is unlocked.

In other preferred embodiments of the present invention, the MOS transistor Q2 and the transistor Q1 may be any suitable switching device, such as a MOS transistor, a thyristor, or an IGBT transistor.

In a preferred embodiment of the present invention, the second communication port for connecting the national standard charging gun and the japanese standard charging gun is a CAN port, and when it is used for european standard and american standard charging guns, an insulator gauge may be employed.

Fig. 8 is a schematic diagram of a charger controller supporting a multi-standard charging interface according to a preferred embodiment of the present invention. As shown in fig. 8, the control module includes a core control board, and an I/O input expansion chip, an I/O output expansion chip, a CAN communication isolation chip, an RS485 isolation chip, and an RS232 isolation chip, which are communicatively connected to the core control board. The universal temperature port 110 includes ports TEMP1-TEMP3, the first communication port 120 includes an euro-american standard CP or a national standard CC1 port, and the gun lock port 130 includes a japanese/national standard gun lock Elock + port and an Elock-port. The second communication port 140 includes a CAN1 port for connecting to a vehicle BMS.

Furthermore, the charger controller supporting the multi-standard charging interface further comprises a common DC + interface, a common DC-interface and a common PE interface. Furthermore, the charger controller supporting the multi-standard charging interface further comprises a U-standard dedicated port for connecting the U-standard charging gun, a Japanese-standard dedicated port for connecting the Japanese-standard charging gun, and a national-standard dedicated port for connecting the national-standard charging gun; the control module 300 is electrically connected to the U.S. standard dedicated port, the Japanese standard dedicated port, and the national standard dedicated port. The American standard special port comprises a PP port, the Japanese standard special port comprises a Signal1 port, a Signal2 port, a Permssion port and a Proximitty port, and the national standard special port comprises an A + port, an A-port, an RS + port and an RS-port. Here, the control module 300 may control these dedicated ports according to prior art settings and protocols.

Further, on the premise that the charging interfaces meet the various standards, the control module 300 may further include other interfaces for communicating, controlling, and monitoring with other peripheral devices of the charging system, such as a CAN2 port, an RS485 port, an RS232 port, a hard-wired port, and an active output port.

As shown in fig. 8, the CAN2 port may be used for charging module communication. And the RS485_ 1-3 ports can be used for communication of peripheral equipment such as an electric energy meter, an insulation instrument and the like. The number of the RS485 communication ports can be 1 or 2-3. The RS232_ 1-3 ports can be used for communication of a touch screen of peripheral equipment, a card reader and the like. The number of RS232 communication ports may be 1, or 2 or 3, which satisfies the minimum system. The hard contact 1-7 ports can be used for monitoring states of emergency stop, electronic lock, contactor and the like; the number of hard-wired inputs may be 3 or 4 to 7. The active output ports 1 to 11 are used for controlling devices such as indicator lights and contactors, and the number of the active output ports can be 3 or 4 to 11.

The invention provides a charger controller supporting multi-standard charging interfaces in a 'least common multiple' compatible mode by comparing the difference and the common part of each standard interface, wherein the charger controller stores European standard, american standard, national standard and Japanese standard charging protocols and reuses a common port, thereby realizing the function of supporting the multi-standard charging interfaces with smaller size, simple configuration and low cost. The charger controller can be compatible with national standard, daily standard, european standard and American standard, so that the compatibility is good. The invention realizes that 1 set of charger main control unit is universal to the global mainstream charging standard by compatibility of 'least common multiple', integration of PLC communication unit and multiplexing of common function port, supports European standard, american standard, national standard and daily standard direct current single-gun charging, and makes the configuration of the direct current single-gun charging system become simple and have high compatibility. Meanwhile, on the premise of meeting the basic charging functions of various charging standards, external access ports such as a multipath communication port and an I/O port are reserved, and the design requirements of a customized charging system with more functions are met.

Fig. 9 is a connection diagram of a charger controller supporting a multi-standard charging interface for a european standard/american standard charging gun according to a preferred embodiment of the present invention. For simplicity, fig. 9 shows the main common ports. As shown in fig. 9, when the european standard charging gun is connected, the control module does not detect the PP line state, and when the american standard charging gun is connected, the control module detects the PP line state. The european standard electric vehicle and the american standard electric vehicle adopt DIN SPEC 70121 or ISO15118 protocol through charging gun communication, and the communication protocol is interfaced by a built-in program of the control module 300, and specific port connections are shown in fig. 9, and the principle of the communication protocol can refer to the foregoing embodiments and the common knowledge in the art, and will not be described again here.

Fig. 10 is a connection diagram of the charger controller supporting the multi-standard charging interface for the day-standard charging gun according to the preferred embodiment of the invention. For simplicity, only the main common ports are shown in FIG. 10. As shown in fig. 10, the electronic lock of the charging gun is of a single-holding type or a self-holding type, and the control module is selected and informed on the touch screen or is directly set by a program carried by the control module. GB/T27930 is adopted for national standard electric vehicle communication, and communication protocol butt joint is completed by a built-in program of the main control module. Specific port connections are shown in fig. 10, and the principle thereof can be referred to the previous embodiments and the common knowledge in the art, and will not be described again here.

Fig. 11 is a connection diagram of the charger controller supporting the multi-standard charging interface for the national standard charging gun according to the preferred embodiment of the invention. For simplicity, only the main common ports are shown in FIG. 11. The communication of the electric vehicle of the day standard adopts CHAdemo 2.0, and the communication protocol butt joint is completed by a built-in program of the control module 300. Specific port connections are shown in fig. 11, and the principle thereof can be referred to the previous embodiments and the common knowledge in the art, and will not be described again here.

The invention further relates to a charger, which comprises the charger controller supporting the multi-standard charging interface. The charger may be constructed as described with reference to the embodiments shown in fig. 3 to 11, and will not be described again.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. The utility model provides a support machine controller that charges of multistandard interface which characterized in that includes:

the gun locking module is used for connecting the national standard charging gun and the daily standard charging gun and electrically connecting the gun locking port;

a control module for controlling the temperature sampling module, the first communication module, the gun locking module and/or the second communication port to work based on the charging communication protocol corresponding to the call of the European standard charging gun, the Japanese standard charging gun, the American standard charging gun and the national standard charging gun connected with the universal temperature port, the first communication port, the gun locking port or the second communication port;

the control module is electrically connected with the American standard special port, the Japanese standard special port and the national standard special port;

the second communication port comprises an S + interface, an S-interface, a CAN-H interface and a CAN-L interface;

the first communication port comprises an European and American standard CP or national standard CC1 port;

the universal temperature port comprises a WK1 interface, a WK2 interface, a WK3 interface and a WK4 interface;

the gun locking module comprises an EL + interface, an EL-interface, an Elock + interface and an Elock-interface;

the first communication module comprises an isolation transformer, a PLC (programmable logic controller) communication unit, an isolation voltage reduction unit, an optical coupler, an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor, wherein a first input end of the isolation transformer is connected with a first connection port of the first communication port, a second input end of the isolation transformer is connected with a second connection port of the first communication port, and an output end of the isolation transformer is connected with the control module through the PLC communication unit; the anode of the transmitting end of the optical coupler is connected with a second power supply, the cathode of the transmitting end of the optical coupler is connected with the control module to receive the communication control signal, or the anode of the transmitting end of the optical coupler is connected with the control module to receive the communication control signal, and the cathode of the transmitting end of the optical coupler is grounded; the control module controls the communication of the European standard charging gun or the American standard charging gun based on the isolation transformer, the PLC communication unit, the optocoupler and the operational amplifier, and controls the communication of the national standard charging gun based on the optocoupler and the operational amplifier;

the gun locking module comprises an intermediate relay, a comparator, a first optocoupler, a second optocoupler, a first switch tube, a second switch tube, a first gun locking resistor, a second gun locking resistor, a third gun locking resistor, a fourth gun locking resistor, a fifth gun locking resistor, a sixth gun locking resistor, a seventh gun locking resistor and an eighth gun locking resistor; the first end of a control coil of the intermediate relay is connected with a third power supply, the second end of the control coil is connected with the first end of the first switch tube, the first moving contact is connected with the first connecting port of the gun locking port, the second moving contact is connected with the second connecting port of the gun locking port, the first normally closed contact and the second normally open contact are connected with the third power supply, and the second normally closed contact and the first normally open contact are connected with the first end of the second switch tube; the control end of the first switch tube receives a first control signal, and the second end of the first switch tube is grounded; the second end of the second switch tube is connected with the reverse input end of the comparator and is grounded through the first gun locking resistor; the positive input end of the comparator is connected with the third power supply through the second gun locking resistor and is grounded through the third gun locking resistor; the output end of the comparator is connected with the third power supply through the fourth gun locking resistor, the output end of the comparator is simultaneously connected with the cathode of the transmitting end of the first optocoupler, the anode of the transmitting end of the first optocoupler is connected with the third power supply through the fifth gun locking resistor, the emitter of the receiving end is grounded, and the collector of the receiving end is connected with the second power supply through the sixth gun locking resistor; the control end of the second switch tube is connected with the emitter of the receiving end of the second optocoupler through the seventh gun locking resistor, the collector of the receiving end of the second optocoupler is connected with the third power supply through the eighth gun locking resistor, the anode of the transmitting end receives a second control signal, and the cathode of the transmitting end is grounded; the control module controls the day standard charging gun to lock the gun based on the second control signal, receives a gun locking state from a receiving end collector of the first optocoupler, and controls the national standard charging gun to lock the gun based on the first control signal and the second control signal.

2. The battery charger controller supporting a multi-standard charging interface according to claim 1, wherein the temperature sampling module comprises a first sampling resistor, a second sampling resistor, a third sampling resistor, a sampling chip, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, a fourth voltage-dividing resistor, a fifth voltage-dividing resistor and a sixth voltage-dividing resistor, the first sampling resistor is arranged at the positive electrode of the charging gun, the second sampling resistor is arranged at the negative electrode of the charging gun, the third sampling resistor is arranged in a battery box, the first ends of the first sampling resistor, the second sampling resistor and the third sampling resistor are connected with the negative electrode of a power supply respectively, the second end of the first sampling resistor is connected with the positive electrode of the power supply through the first voltage-dividing resistor, the second end of the second sampling resistor is connected with the positive electrode of the power supply through the second voltage-dividing resistor, the sampling chip is connected with the sampling chip through the second voltage-dividing resistor to input a first voltage, the second end of the second sampling resistor is connected with the positive electrode of the sampling chip through the fourth voltage-dividing resistor to input a second voltage, the third sampling resistor is connected with the positive electrode of the sampling chip to input a voltage-dividing resistor, the sampling value is connected with the fifth voltage-dividing resistor through the power supply to the voltage-dividing resistor, and the voltage-control module, and the voltage control module are electrically connected with the sampling value, and the voltage control module.

3. The charger controller supporting multi-standard charging interface according to claim 1, wherein the second communication port is a first CAN communication port.

4. The charger controller supporting a multi-standard charging interface according to claim 1, further comprising a second CAN communication port, an RS485 communication port, an RS232 communication port, a hard-wired port, and an active output port.

5. The charger controller supporting multi-standard charging interface according to claim 2, wherein the charging communication protocol comprises DIN SPEC 70121 protocol, ISO15118 protocol, CHAdeMO 2.0 protocol, and GB/T27930 protocol.

6. A charger, characterized by comprising a charger controller supporting a multi-standard charging interface according to any one of claims 1 to 5.