CN113281589A - New energy automobile direct current charging test system and test method - Google Patents
New energy automobile direct current charging test system and test method Download PDFInfo
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- CN113281589A CN113281589A CN202110499338.6A CN202110499338A CN113281589A CN 113281589 A CN113281589 A CN 113281589A CN 202110499338 A CN202110499338 A CN 202110499338A CN 113281589 A CN113281589 A CN 113281589A
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- charging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
Abstract
The invention discloses a direct-current charging test system of a new energy automobile, which is characterized by comprising a data processing module, a parameter acquisition device, an insulation resistance simulator, a power supply simulator, a direct-current charging interface simulator, a control module, a power supply module and a direct-current charging test interface; the parameter acquisition device and the power supply simulator are respectively connected with the data processing module; the insulation resistance simulator, the power supply simulator, the direct current charging test interface and the control module are respectively connected with the direct current charging gun socket; the power supply module is connected with the control module; according to the invention, various testing functions based on charging are realized, including a new energy automobile direct current interoperation test, a protocol consistency test and a custom module test, and the non-standard test requirements of a user on the charging and discharging functions of the electric automobile are supported, so that the custom test requirements of the user are met.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to a direct current charging test system and a direct current charging test method for a new energy automobile.
Background
The problem of compatibility between electric vehicles and charging equipment for charging always troubles vehicle enterprises, operators and manufacturers of charging facilities mainly because of inconsistency of understanding of national standards by all parties and incomplete testing of vehicles and charging equipment by all parties. The existing new energy charging test system and charging method can not meet the individual test requirements of different users and can not meet the comprehensive test of different users on individual products.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a direct-current charging test system for a new energy automobile, which comprises a data processing module, a parameter acquisition device, an insulation resistance simulator, a power supply simulator, a direct-current charging interface simulator, a control module, a power supply module and a direct-current charging test interface; the parameter acquisition device and the power supply simulator are respectively connected with the data processing module; the insulation resistance simulator, the power supply simulator, the direct current charging test interface and the control module are respectively connected with the direct current charging gun socket; the power supply module is connected with the control module;
the power supply simulator comprises a charger power module simulator, a U1 power supply simulator and an adjustable auxiliary power supply simulator, wherein one end of the charger power module simulator is connected with the DC + end of the DC charging interface simulator through a switch KZ1, and the other end of the charger power module simulator is connected with the DC-end of the DC charging interface simulator through a switch KZ 2;
one end of the U1 power supply simulator is connected with the PE end of the direct-current charging interface simulator through a switch KZ3 and is connected with the CC2 end of the direct-current charging interface simulator through a switch KZ9, and the other end of the U1 power supply simulator is connected with the CC1 port of the direct-current charging interface simulator through a switch KZ 4;
one end of the adjustable auxiliary power supply simulator is connected with the A + end of the direct-current charging interface simulator through a switch KZ7, and the other end of the adjustable auxiliary power supply simulator is connected with the A-end of the direct-current charging interface simulator through a switch KZ 8;
s + and S-of the direct current charging interface simulator are respectively connected with the control module;
the insulation resistance simulator comprises a switch KZ12, a resistor R6 and a resistor R7; one end of a switch KZ12 is grounded, one end of a resistor R6 is connected with one end of KZ1, the other end of the resistor R6 is connected with the other end of a switch KZ12, one end of a resistor R7 is connected with one end of KZ2, and the other end of a resistor R7 is connected with KZ 12;
the circuit also comprises a switch KZ5, a switch KZ6, a resistor R1 and a resistor R3, wherein the switch KZ5 is arranged between KZ1 and DC +; the switch KZ6 is arranged between KZ2 and DC-; the resistor R1 is arranged between the U1 power supply simulator and the CC 1; the resistor R3 is disposed between the U1 power supply simulator and the CC 2.
A direct current charging test method comprises the following steps:
step one, testing vehicle charging and running interlocking; when the vehicle is in a driving system power supply cut-off state, the tester is plugged with a vehicle socket through a direct current charging gun, and when the vehicle is in the driving system power supply cut-off state and in a drivable mode, the vehicle cannot move through a driving system of the vehicle, so that the vehicle is qualified, otherwise, the vehicle is unqualified;
step two, after the vehicle charging and running interlocking test is qualified, an interface connection test is carried out, and when the interface is completely connected, the step three is carried out;
step three, after self-checking test and whether the vehicle interfaces can be completely connected, judging whether the system can enter a correct charging process, and if so, entering a step four;
step four, testing the charging readiness, and after the system sends a charger identification message, the vehicle sends a power storage battery parameter message; before the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message; after the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message;
step five, testing in a charging stage; after the tester sends a CRO message of SPN2830 (OxAA) according to a period of 250ms, a BCS message and a period BCL message sent by a vehicle are received; controlling the output voltage and current of the charging power supply simulator; the tester sends CCS messages according to a cycle of 50ms, and receives messages such as BCL, BCS, BSM, BMV, BMT, BSP and the like sent by vehicles; after the tester sends a charger output ready message (0xAA), the vehicle sends a battery charging demand message parameter message; after the vehicle sends the CCS message, the vehicle should start charging; in the charging process, the vehicle sends a power storage battery state message in real time;
step six, ending the charging test; in the charging process, after the vehicle reaches a charging end condition, receiving a BST message sent by the vehicle; the system sends CST messages according to a cycle of 10ms, and stops the power output of the charger power supply simulator; receiving a BSD message sent by a vehicle; the system sends CSD messages and receives BSD messages sent by vehicles.
Further, the method also comprises a charging connection control time sequence test, wherein the voltage value of the equipment test detection point 1 is collected; collecting a voltage value of a device test detection point 2; the monitoring equipment tests the state of KZ5 and KZ 6; and testing the communication state (the data state of S + and S-) by using the parameter acquisition equipment, and if the state conversion and the interval time of the vehicle charging connection accord with set values, determining that the communication state is qualified.
Further, the method also comprises an insulation fault test, and after the charging state is entered, the charging current is controlled to be less than 5A; controlling the resistance values of R6 and R7 to be R > 500 omega/V; closing KZ12, wherein the whole charging process is normally carried out; controlling and adjusting the resistance values of R6 and R7 to be more than 100 omega/V and less than or equal to 500 omega/V, and then carrying out insulation abnormity alarm; controlling and adjusting the resistance values of R6 and R7 to be R less than or equal to 100 omega/V, sending a message that the vehicle stops charging to the system by the vehicle, controlling a charger power supply simulator by a tester to stop power supply, disconnecting KZ1 and KZ2 when the current is less than or equal to 5A, and disconnecting K5 and K6 within 300 ms; after the test is finished, controlling to disconnect KZ 12; and if the vehicle insulation fault monitoring function responds within 100s, the insulation fault test is qualified.
Further, communication interruption test is also included, and in normal charging, the charging current is controlled to be less than 5A;
a) controlling to disconnect S + and S-, simulating communication overtime, detecting charging voltage and current, confirming the states of KZ5 and KZ6, and if the vehicle disconnects KZ5 and KZ6 within 10S, determining that the vehicle is qualified;
b) and controlling to close the KZ10 and the KZ11, simulating communication recovery, and after the communication is recovered, if the vehicle reestablishes handshake connection, determining that the vehicle is qualified.
Further, a PE broken pin test is also included, and in the charging stage, the KZ3 is controlled to be disconnected to simulate the PE broken pin; and checking the communication state of the vehicle, if the vehicle sends a BMS (battery management system) stop charging message, testing to be qualified, and if not, testing to be unqualified.
The invention has the beneficial effects that: the invention can realize the tests including the direct current interoperation test, the protocol consistency test, the custom module test and the like of the new energy automobile, can also meet the non-standard test requirements of the user on the charge and discharge functions of the electric automobile and realizes the custom test.
Drawings
Fig. 1 is a schematic diagram of a dc charging test system for a new energy vehicle;
FIG. 2 is a flow chart illustrating a DC charging test method;
fig. 3 is a schematic diagram of a dc charging test system for a new energy vehicle.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1, a new energy automobile dc charging test system includes a data processing module, a parameter collecting device, an insulation resistance simulator, a power supply simulator, a dc charging interface simulator, a control module, a power supply module, and a dc charging test interface; the parameter acquisition device and the power supply simulator are respectively connected with the data processing module; the insulation resistance simulator, the power supply simulator, the direct current charging test interface and the control module are respectively connected with the direct current charging gun socket; the power supply module is connected with the control module;
the power supply simulator comprises a charger power module simulator, a U1 power supply simulator and an adjustable auxiliary power supply simulator, wherein one end of the charger power module simulator is connected with the DC + end of the DC charging interface simulator through a switch KZ1, and the other end of the charger power module simulator is connected with the DC-end of the DC charging interface simulator through a switch KZ 2;
one end of the U1 power supply simulator is connected with the PE end of the direct-current charging interface simulator through a switch KZ3 and is connected with the CC2 end of the direct-current charging interface simulator through a switch KZ9, and the other end of the U1 power supply simulator is connected with the CC1 port of the direct-current charging interface simulator through a switch KZ 4;
one end of the adjustable auxiliary power supply simulator is connected with the A + end of the direct-current charging interface simulator through a switch KZ7, and the other end of the adjustable auxiliary power supply simulator is connected with the A-end of the direct-current charging interface simulator through a switch KZ 8;
s + and S-of the direct current charging interface simulator are respectively connected with the control module;
the insulation resistance simulator comprises a switch KZ12, a resistor R6 and a resistor R7; one end of a switch KZ12 is grounded, one end of a resistor R6 is connected with one end of KZ1, the other end of the resistor R6 is connected with the other end of a switch KZ12, one end of a resistor R7 is connected with one end of KZ2, and the other end of a resistor R7 is connected with KZ 12;
the circuit also comprises a switch KZ5, a switch KZ6, a resistor R1 and a resistor R3, wherein the switch KZ5 is arranged between KZ1 and DC +; the switch KZ6 is arranged between KZ2 and DC-; the resistor R1 is arranged between the U1 power supply simulator and the CC 1; the resistor R3 is disposed between the U1 power supply simulator and the CC 2.
A direct current charging test method comprises the following steps:
step one, testing vehicle charging and running interlocking; when the vehicle is in a driving system power supply cut-off state, the tester is plugged with a vehicle socket through a direct current charging gun, and when the vehicle is in the driving system power supply cut-off state and in a drivable mode, the vehicle cannot move through a driving system of the vehicle, so that the vehicle is qualified, otherwise, the vehicle is unqualified;
step two, after the vehicle charging and running interlocking test is qualified, an interface connection test is carried out, and when the interface is completely connected, the step three is carried out;
step three, after self-checking test and whether the vehicle interfaces can be completely connected, judging whether the system can enter a correct charging process, and if so, entering a step four;
step four, testing the charging readiness, and after the system sends a charger identification message, the vehicle sends a power storage battery parameter message; before the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message; after the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message;
step five, testing in a charging stage; after the tester sends a CRO message of SPN2830 (OxAA) according to a period of 250ms, a BCS message and a period BCL message sent by a vehicle are received; controlling the output voltage and current of the charging power supply simulator; the tester sends CCS messages according to a cycle of 50ms, and receives messages such as BCL, BCS, BSM, BMV, BMT, BSP and the like sent by vehicles; after the tester sends a charger output ready message (0xAA), the vehicle sends a battery charging demand message parameter message; after the vehicle sends the CCS message, the vehicle should start charging; in the charging process, the vehicle sends a power storage battery state message in real time;
step six, ending the charging test; in the charging process, after the vehicle reaches a charging end condition, receiving a BST message sent by the vehicle; the system sends CST messages according to a cycle of 10ms, and stops the power output of the charger power supply simulator; receiving a BSD message sent by a vehicle; the system sends CSD messages and receives BSD messages sent by vehicles.
The method also comprises a charging connection control time sequence test, wherein a voltage value of a device test detection point 1 is acquired; collecting a voltage value of a device test detection point 2; the monitoring equipment tests the state of KZ5 and KZ 6; and testing the communication state (the data state of S + and S-) by using the parameter acquisition equipment, and if the state conversion and the interval time of the vehicle charging connection accord with set values, determining that the communication state is qualified.
The method also comprises an insulation fault test, and after the charging state is entered, the charging current is controlled to be less than 5A; controlling the resistance values of R6 and R7 to be R > 500 omega/V; closing KZ12, wherein the whole charging process is normally carried out; controlling and adjusting the resistance values of R6 and R7 to be more than 100 omega/V and less than or equal to 500 omega/V, and then carrying out insulation abnormity alarm; controlling and adjusting the resistance values of R6 and R7 to be R less than or equal to 100 omega/V, sending a message that the vehicle stops charging to the system by the vehicle, controlling a charger power supply simulator by a tester to stop power supply, disconnecting KZ1 and KZ2 when the current is less than or equal to 5A, and disconnecting K5 and K6 within 300 ms; after the test is finished, controlling to disconnect KZ 12; and if the vehicle insulation fault monitoring function responds within 100s, the insulation fault test is qualified.
Further, communication interruption test is also included, and in normal charging, the charging current is controlled to be less than 5A;
a) controlling to disconnect S + and S-, simulating communication overtime, detecting charging voltage and current, confirming the states of KZ5 and KZ6, and if the vehicle disconnects KZ5 and KZ6 within 10S, determining that the vehicle is qualified;
b) and controlling to close the KZ10 and the KZ11, simulating communication recovery, and after the communication is recovered, if the vehicle reestablishes handshake connection, determining that the vehicle is qualified.
The method also comprises a PE broken pin test, wherein in the charging stage, the KZ3 is controlled to be disconnected to simulate the PE broken pin; and checking the communication state of the vehicle, if the vehicle sends a BMS (battery management system) stop charging message, testing to be qualified, and if not, testing to be unqualified.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A direct current charging test system of a new energy automobile is characterized by comprising a data processing module, a parameter acquisition device, an insulation resistance simulator, a power supply simulator, a direct current charging interface simulator, a control module, a power supply module and a direct current charging test interface; the parameter acquisition device and the power supply simulator are respectively connected with the data processing module; the insulation resistance simulator, the power supply simulator, the direct current charging test interface and the control module are respectively connected with the direct current charging gun socket; the power supply module is connected with the control module;
the power supply simulator comprises a charger power module simulator, a U1 power supply simulator and an adjustable auxiliary power supply simulator, wherein one end of the charger power module simulator is connected with the DC + end of the DC charging interface simulator through a switch KZ1, and the other end of the charger power module simulator is connected with the DC-end of the DC charging interface simulator through a switch KZ 2;
one end of the U1 power supply simulator is connected with the PE end of the direct-current charging interface simulator through a switch KZ3 and is connected with the CC2 end of the direct-current charging interface simulator through a switch KZ9, and the other end of the U1 power supply simulator is connected with the CC1 port of the direct-current charging interface simulator through a switch KZ 4;
one end of the adjustable auxiliary power supply simulator is connected with the A + end of the direct-current charging interface simulator through a switch KZ7, and the other end of the adjustable auxiliary power supply simulator is connected with the A-end of the direct-current charging interface simulator through a switch KZ 8;
s + and S-of the direct current charging interface simulator are respectively connected with the control module;
the insulation resistance simulator comprises a switch KZ12, a resistor R6 and a resistor R7; one end of a switch KZ12 is grounded, one end of a resistor R6 is connected with one end of KZ1, the other end of the resistor R6 is connected with the other end of a switch KZ12, one end of a resistor R7 is connected with one end of KZ2, and the other end of a resistor R7 is connected with KZ 12;
the circuit also comprises a switch KZ5, a switch KZ6, a resistor R1 and a resistor R3, wherein the switch KZ5 is arranged between KZ1 and DC +; the switch KZ6 is arranged between KZ2 and DC-; the resistor R1 is arranged between the U1 power supply simulator and the CC 1; the resistor R3 is disposed between the U1 power supply simulator and the CC 2.
2. The direct current charging test method of the direct current charging test system of the new energy automobile according to claim 1, characterized by comprising the following steps:
step one, testing vehicle charging and running interlocking; when the vehicle is in a driving system power supply cut-off state, the tester is plugged with a vehicle socket through a direct current charging gun, and when the vehicle is in the driving system power supply cut-off state and in a drivable mode, the vehicle cannot move through a driving system of the vehicle, so that the vehicle is qualified, otherwise, the vehicle is unqualified;
step two, after the vehicle charging and running interlocking test is qualified, an interface connection test is carried out, and when the interface is completely connected, the step three is carried out;
step three, after self-checking test and whether the vehicle interfaces can be completely connected, judging whether the system can enter a correct charging process, and if so, entering a step four;
step four, testing the charging readiness, and after the system sends a charger identification message, the vehicle sends a power storage battery parameter message; before the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message; after the KZ5 and the KZ6 are closed, the vehicle should send a BMS charging readiness message;
step five, testing in a charging stage; after the tester sends a CRO message of SPN2830 (OxAA) according to a period of 250ms, a BCS message and a period BCL message sent by a vehicle are received; controlling the output voltage and current of the charging power supply simulator; the tester sends CCS messages according to a cycle of 50ms, and receives messages such as BCL, BCS, BSM, BMV, BMT, BSP and the like sent by vehicles; after the tester sends a charger output ready message (0xAA), the vehicle sends a battery charging demand message parameter message; after the vehicle sends the CCS message, the vehicle should start charging; in the charging process, the vehicle sends a power storage battery state message in real time;
step six, ending the charging test; in the charging process, after the vehicle reaches a charging end condition, receiving a BST message sent by the vehicle; the system sends CST messages according to a cycle of 10ms, and stops the power output of the charger power supply simulator; receiving a BSD message sent by a vehicle; the system sends CSD messages and receives BSD messages sent by vehicles.
3. The direct current charging test method according to claim 2, further comprising a charging connection control timing test, wherein the voltage value of the test detection point 1 of the device is collected; collecting a voltage value of a device test detection point 2; the monitoring equipment tests the state of KZ5 and KZ 6; and testing the communication state (the data state of S + and S-) by using the parameter acquisition equipment, and if the state conversion and the interval time of the vehicle charging connection accord with set values, determining that the communication state is qualified.
4. The direct current charging test method according to claim 2, further comprising an insulation fault test, wherein after entering a charging state, the charging current is controlled to be less than 5A; controlling the resistance values of R6 and R7 to be R > 500 omega/V; closing KZ12, wherein the whole charging process is normally carried out; controlling and adjusting the resistance values of R6 and R7 to be more than 100 omega/V and less than or equal to 500 omega/V, and then carrying out insulation abnormity alarm; controlling and adjusting the resistance values of R6 and R7 to be R less than or equal to 100 omega/V, sending a message that the vehicle stops charging to the system by the vehicle, controlling a charger power supply simulator by a tester to stop power supply, disconnecting KZ1 and KZ2 when the current is less than or equal to 5A, and disconnecting K5 and K6 within 300 ms; after the test is finished, controlling to disconnect KZ 12; and if the vehicle insulation fault monitoring function responds within 100s, the insulation fault test is qualified.
5. The direct current charging test method according to claim 2, further comprising a communication interruption test, wherein in normal charging, the charging current is controlled to be less than 5A;
a) controlling to disconnect S + and S-, simulating communication overtime, detecting charging voltage and current, confirming the states of KZ5 and KZ6, and if the vehicle disconnects KZ5 and KZ6 within 10S, determining that the vehicle is qualified;
b) and controlling to close the KZ10 and the KZ11, simulating communication recovery, and after the communication is recovered, if the vehicle reestablishes handshake connection, determining that the vehicle is qualified.
6. The direct-current charging test method according to claim 2, further comprising a PE pin breakage test, wherein in the charging stage, the KZ3 is controlled to be turned off to simulate a PE pin breakage; and checking the communication state of the vehicle, if the vehicle sends a BMS (battery management system) stop charging message, testing to be qualified, and if not, testing to be unqualified.
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