CN111856304A - Charging pile interoperability test system and method - Google Patents
Charging pile interoperability test system and method Download PDFInfo
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- CN111856304A CN111856304A CN202010627107.4A CN202010627107A CN111856304A CN 111856304 A CN111856304 A CN 111856304A CN 202010627107 A CN202010627107 A CN 202010627107A CN 111856304 A CN111856304 A CN 111856304A
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- 238000004088 simulation Methods 0.000 claims description 108
- 238000003780 insertion Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 6
- 230000001264 neutralization Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000003287 optical Effects 0.000 description 3
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
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Classifications
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/001—Measuring real or reactive component; Measuring apparent energy
- G01R21/002—Measuring real component
-
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
Abstract
The invention relates to the technical field of new energy vehicles, in particular to a charging pile interoperability testing system and a charging pile interoperability testing method.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a system and a method for testing interoperability of a charging pile.
Background
The electric automobile is a necessary trend in the world traffic field development and a strategic development direction in China, and the electric automobile charging facility is very important as a novel urban infrastructure. The alternating-current charging pile is taken as the most widely used charging facility at present, and is widely favored due to the characteristics of small occupied area, convenience in installation, light weight, small volume, safety and stability.
It is worth noting that, in China, the situation that the alternating current charging pile and the electric automobile are incompatible still happens occasionally, and the alternating current charging pile needs to detect the control guide signal and the protection performance regularly. The detection of current alternating-current charging stake includes the pattern inspection, the inspection of dispatching from the factory, the inspection of arriving the goods etc. mainly all goes on in the laboratory, but alternating-current charging stake long-term work is in the abominable outdoor of environment, receives the wind and drenches, may have functional damage after long-time, the risk of performance degradation, and convenient and fast's check out test set and detection method are lacked at present and automatic short-term the detection is carried out to alternating-current charging stake's interoperability.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for testing interoperability of a charging pile, which can solve the technical problems in the background art.
The invention relates to a system and a method for testing interoperability of a charging pile, which comprises a simulation interface, a BMS simulation device, an adjustable load, an electric control switch, a power acquisition module and an operation control unit, wherein the simulation interface is connected with the BMS simulation device;
the simulation interface comprises a direct current simulation interface and an alternating current simulation interface, and the direct current simulation interface and the alternating current simulation interface are respectively used for connecting a direct current charging pile or a charging gun of an alternating current charging pile to be detected;
The BMS simulation device is connected with the direct current simulation interface and the alternating current simulation interface through the electric control switch, the control end of the electric control switch is connected with the operation control unit, and the BMS simulation device is used for simulating the battery state and carrying out message transmission with the direct current charging pile or the alternating current charging pile;
the control end of the adjustable load is connected with the operation control unit, and the controlled end of the adjustable load is connected between the simulation interface and the BMS simulation device;
the acquisition end of the power acquisition module is connected between the BMS simulation device and the simulation interface, and the signal end of the power acquisition module is connected with the operation control unit;
the operation control unit is used for controlling the adjustable load and operating and processing the data acquired by the power acquisition module.
Further, the direct current analog interface includes a positive charging terminal, a negative charging terminal, a ground terminal, a high-level communication terminal, a low-level communication terminal, a first insertion confirmation terminal, a second insertion confirmation terminal, an auxiliary power positive terminal, and an auxiliary power negative terminal, all connected with the BMS analog device using wires; one end of the adjustable load is connected to a connection line of the positive electrode charging terminal, the negative electrode charging terminal, the ground terminal, the first insertion confirmation terminal and the second insertion confirmation terminal with the BMS simulation device, and the other end of the adjustable load is grounded.
Further, exchange the simulation interface including all use the wire with BMS analogue means connects three alternating current power supply lines, ground wire and confirms terminal, control guide terminal, connection and confirm terminal and neutral terminal, the one end of adjustable load is connected at live wire terminal, neutral terminal, ground wire terminal and connection and is confirmed the terminal and on BMS analogue means's the line, the other end ground connection of adjustable load.
Furthermore, the adjustable load comprises a fixed-value resistor and a relay, a single customized resistor and the relay are connected in series to form a sub-load, and a plurality of sub-loads are connected in parallel to form the complete adjustable load.
The invention also provides a method for testing the interoperability of the charging pile, which comprises the following steps:
(1) inserting the charging gun on the alternating current charging pile or the direct current charging pile into the simulation interface for testing;
(2) the BMS simulation device is used for carrying out message communication with the charging pile, and output simulation test is carried out after successful connection;
(3) the operation control unit is used for closing all the electric control switches, and the power acquisition module is used for acquiring the instantaneous power of the charging pile at the moment;
(4) calculating corresponding impedance of each time point in the full charging process of the battery by using the BMS simulation device, adjusting the adjustable load to simulate corresponding impedance, measuring instantaneous power of each time point by using the power acquisition module, sending the instantaneous power to the operation control unit, performing integral operation, calculating total power consumption, comparing the total power consumption with the power consumption displayed on the charging pile, and calculating loss;
(5) Sequentially disconnecting all the electric control switches, testing whether the charging pile can normally output under the condition that one or more electric control switches are disconnected, and recording message information sent by the charging pile to the BMS simulation device;
(6) sequentially adjusting the adjustable loads on the grounding terminal, the first insertion confirmation terminal and the second insertion confirmation terminal on the direct current simulation interface, recording whether the charging pile can normally output under the condition that the charging pile is not grounded completely or the charging gun is not checked completely, and recording message information sent by the charging pile to the BMS simulation device;
(7) and sequentially adjusting the adjustable load on the ground terminal and the connection confirmation terminal on the alternating current simulation interface, recording whether the charging pile can normally output or not under the condition that the charging pile is not grounded completely or the charging gun is not checked completely, and recording message information sent to the BMS simulation device by the charging pile.
Further, the process of message communication includes:
(1) in the handshaking and handshaking reply stage, the charging pile firstly sends a handshaking message to the BMS simulation device, and the BMS simulation device sends a handshaking reply message to the charging pile after receiving the handshaking message;
(2) In the charging parameter configuration stage, the BMS simulation device simulates the parameters of the battery and sends messages of the charging parameters to a charging pile, and the charging pile receives the messages and then mutually transmits the messages with the BMS simulation device so as to synchronize time, determine the maximum charging output capacity and confirm readiness;
(3) charging is carried out, and a charging pile and the BMS simulation device mutually transmit messages to determine the charging state until the charging pile is fully charged;
(4) and finishing charging.
The invention has the beneficial effects that: according to the system and the method for testing the interoperability of the charging pile, the alternating current or direct current simulation interface is arranged to be connected with the charging gun of the charging pile, and the simulation interface is connected with the BMS simulation device, so that the charging instantaneous power, the electric energy loss and other information of different batteries of the electric automobile under normal conditions can be measured, and whether the charging pile can normally output electric energy and a message sent to the BMS simulation device when a fault occurs under various fault conditions is simulated, so that the interoperability test of the charging pile can be quickly and conveniently carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a block diagram of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a DC analog interface according to the present invention;
fig. 3 is a schematic structural diagram of an ac analog interface according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1-3: the system and the method for testing interoperability of the charging pile comprise a simulation interface, a BMS simulation device, an adjustable load, an electric control switch, a power acquisition module and an operation control unit, wherein the BMS simulation device is in the prior art and can be directly adopted;
The simulation interface comprises a direct current simulation interface and an alternating current simulation interface which are national standards, and the direct current simulation interface and the alternating current simulation interface are respectively used for connecting a direct current charging pile or a charging gun of an alternating current charging pile to be detected;
BMS analogue means passes through electric switch with direct current simulation interface or interchange simulation interface and is connected, thereby electric switch can control the break-make between BMS analogue means and direct current simulation interface or the interchange simulation interface, thereby simulate out electric automobile when charging, after filling the electric pile trouble, the BMS system sends the fault message of difference for filling the electric pile after, fill the electric pile and whether can also continue the output electric energy, if continue or terminate, can send what kind of message for the BMS system. The control end of the electric control switch is connected with the operation control unit, the electric control switch is an optical coupling relay, so that the operation control unit is isolated from the charging circuit, and the optical coupling relay is also connected with the operation control unit through a serial port; the BMS simulation device is used for simulating the state of the battery, and has the main functions of calculating the converted impedance of the battery under the conditions of different temperatures, battery capacities and voltages, correspondingly changing the resistance value of the adjustable load, transmitting messages with the direct current charging pile or the alternating current charging pile, telling the state of the battery at the moment to which current and voltage need to be input, and simulating the output power of the charging pile slot of the automobile battery in each state;
The control end of the adjustable load is connected with the operation control unit through an optical coupler, and the controlled end of the adjustable load is connected between the simulation interface and the BMS simulation device;
the acquisition end of the power acquisition module is connected between the BMS simulation device and the simulation interface, the instantaneous output power of the charging pile is acquired mainly according to specific frequency (such as 50HZ), the instantaneous output power is sent to the operation control unit for integral operation to obtain actual electric energy loss, the actual electric energy conversion rate and the nominal electric energy conversion rate can be obtained according to the capacity change of an automobile battery and the display electric energy loss value of the charging pile, and the signal end of the power acquisition module is connected with the operation control unit;
the operation control unit is used for controlling the adjustable load and operating and processing the data acquired by the power acquisition module.
In this embodiment, the contact terminals inside the DC analog interface are the same as those in the national standard DC interface, and include a positive charging terminal DC +, a negative charging terminal DC-, a ground terminal PE, a high-level communication terminal S +, a low-level communication terminal S-, a first insertion confirmation terminal CC1, a second insertion confirmation terminal CC2, an auxiliary power supply positive terminal a +, and an auxiliary power supply negative terminal a-, all of which are connected to the BMS analog device by using wires; one end of the adjustable load is connected to the positive charging terminal DC +, the negative charging terminal DC-, the ground terminal PE, the first insertion confirmation terminal CC1, and the second insertion confirmation terminal CC2, which are connected to the BMS simulation device, and the other end of the adjustable load is grounded.
In this embodiment, the ac analog interface includes three ac power line terminals (L1, L2, and L3), a control pilot terminal CP, a connection confirmation terminal CC, a ground terminal PE, and a neutral terminal N, all of which are connected to the BMS analog device using wires, one end of the adjustable load is connected to the connection line connecting the confirmation terminal and the BMS analog device, and the other end of the adjustable load is grounded.
In this embodiment, the adjustable load includes fixed value resistance and relay, and the relay passes through the serial ports and is connected with the operation control unit, and single custom-made resistance concatenates with the relay and constitutes the sub-load, constitutes complete adjustable load after a plurality of sub-loads connect in parallel, thereby the operation control unit control relay's break-make control inserts the size of resistance, and wherein, the resistance of fixed value resistance is all inequality to provide the gear of a plurality of access resistances.
The specific implementation process is as follows:
(1) inserting an alternating current charging pile or a charging gun on the direct current charging pile into the simulation interface for testing, wherein before insertion, whether a plug of the charging gun is a direct current plug or an alternating current plug needs to be observed, 9 pins of the charging gun are direct current charging guns, 7 pins of the charging gun are alternating current charging guns, and therefore the direct current simulation interface or the alternating current simulation interface is determined to be used;
(2) The BMS simulation device is used for carrying out message communication with the charging pile, and the national standard GB/T27930-2011 is adopted, so that message information is approximately fixed, and an output simulation test is carried out after successful connection;
(3) the operation control unit is used for closing all the electric control switches, and the power acquisition module is used for acquiring the instantaneous power of the charging pile at the moment;
(4) calculating corresponding impedance of the battery at each time point in the full charging process by using a BMS simulation device, adjusting an adjustable load to simulate the corresponding impedance, and measuring instantaneous power at each time point by using a power acquisition moduleSending the power consumption to an operation control unit, performing integral operation, calculating total power consumption, comparing the total power consumption with the power consumption displayed on a charging pile, and calculating loss rate and electric energy conversion rate, wherein the electric energy conversion rate is divided into actual conversion rate and nominal conversion rate
(5) Sequentially disconnecting all the electric control switches, testing whether the charging pile can normally output under the condition that one or more electric control switches are disconnected, and recording message information sent by the charging pile to the BMS simulation device;
(6) sequentially adjusting the adjustable loads on a grounding terminal PE, a first insertion confirmation terminal CC1 and a second insertion confirmation terminal CC2 on the direct current simulation interface, recording whether the charging pile can normally output under the condition that the charging pile is not grounded completely or the charging gun is not checked completely, and recording message information sent by the charging pile to the BMS simulation device;
(7) The adjustable load on the ground terminal L3 and the connection confirmation terminal CC on the alternating current simulation interface is adjusted in sequence, whether the charging pile can normally output or not is recorded under the condition that the charging pile is completely ungrounded or the charging gun is not completely checked, and message information sent to the BMS simulation device by the charging pile is recorded.
In this embodiment, the process of message communication includes:
(1) in the handshaking and handshaking reply stage, the charging pile firstly sends a handshaking message to the BMS simulation device, and the BMS simulation device sends a handshaking reply message to the charging pile after receiving the handshaking message;
(2) in the charging parameter configuration stage, the BMS simulation device simulates the parameters of the battery and sends messages of the charging parameters to the charging pile, and the charging pile receives the messages and then mutually transmits the messages to the BMS simulation device so as to synchronize time, determine the maximum charging output capacity and confirm readiness;
(3) charging is carried out, and the charging pile and the BMS simulation device mutually transmit messages to determine the charging state until the charging pile is fully charged;
(4) and finishing charging.
According to the system and the method for testing the interoperability of the charging pile, the alternating current or direct current simulation interface is arranged to be connected with the charging gun of the charging pile, and the simulation interface is connected with the BMS simulation device, so that the charging instantaneous power, the electric energy loss and other information of different batteries of the electric automobile under normal conditions can be measured, and whether the charging pile can normally output electric energy and a message sent to the BMS simulation device when a fault occurs under various fault conditions is simulated, so that the interoperability test of the charging pile can be quickly and conveniently carried out.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A fill electric pile interoperability test system which characterized in that: the device comprises a simulation interface, a BMS simulation device, an adjustable load, an electric control switch, a power acquisition module and an operation control unit;
the simulation interface comprises a direct current simulation interface and an alternating current simulation interface, and the direct current simulation interface and the alternating current simulation interface are respectively used for connecting a direct current charging pile or a charging gun of an alternating current charging pile to be detected;
the BMS simulation device is connected with the direct current simulation interface and the alternating current simulation interface through the electric control switch, the control end of the electric control switch is connected with the operation control unit, and the BMS simulation device is used for simulating the battery state and carrying out message transmission with the direct current charging pile or the alternating current charging pile;
the control end of the adjustable load is connected with the operation control unit, and the controlled end of the adjustable load is connected between the simulation interface and the BMS simulation device;
The acquisition end of the power acquisition module is connected between the BMS simulation device and the simulation interface, and the signal end of the power acquisition module is connected with the operation control unit;
the operation control unit is used for controlling the adjustable load and operating and processing the data acquired by the power acquisition module.
2. The charging pile interoperability testing system according to claim 1, wherein: the direct current analog interface includes a positive charging terminal, a negative charging terminal, a ground terminal, a high-level communication terminal, a low-level communication terminal, a first insertion confirmation terminal, a second insertion confirmation terminal, an auxiliary power positive terminal, and an auxiliary power negative terminal, all connected with the BMS analog device using wires; one end of the adjustable load is connected to a connection line of the positive electrode charging terminal, the negative electrode charging terminal, the ground terminal, the first insertion confirmation terminal and the second insertion confirmation terminal with the BMS simulation device, and the other end of the adjustable load is grounded.
3. The charging pile interoperability testing system according to claim 1, wherein: the alternating current simulation interface comprises all used wires and a BMS simulation device is connected with three alternating current power lines, a ground wire confirmation terminal, a control guide terminal, a connection confirmation terminal and a neutral terminal, one end of the adjustable load is connected with a live wire terminal, a neutral terminal, a ground wire terminal, a connection confirmation wire terminal and the BMS simulation device, and the other end of the adjustable load is grounded.
4. The charging pile interoperability testing system according to claim 3 or claim 4, wherein: the adjustable load comprises a fixed value resistor and a relay, a single customized resistor and the relay are connected in series to form a sub-load, and a plurality of sub-loads are connected in parallel to form the complete adjustable load.
5. A charging pile interoperability testing method is characterized by comprising the following steps: the method comprises the following steps:
(1) inserting the charging gun on the alternating current charging pile or the direct current charging pile into the simulation interface for testing;
(2) the BMS simulation device is used for carrying out message communication with the charging pile, and output simulation test is carried out after successful connection;
(3) the operation control unit is used for closing all the electric control switches, and the power acquisition module is used for acquiring the instantaneous power of the charging pile at the moment;
(4) calculating corresponding impedance of each time point in the full charging process of the battery by using the BMS simulation device, adjusting the adjustable load to simulate corresponding impedance, measuring instantaneous power of each time point by using the power acquisition module, sending the instantaneous power to the operation control unit, performing integral operation, calculating total power consumption, comparing the total power consumption with the power consumption displayed on the charging pile, and calculating loss;
(5) Sequentially disconnecting all the electric control switches, testing whether the charging pile can normally output under the condition that one or more electric control switches are disconnected, and recording message information sent by the charging pile to the BMS simulation device;
(6) sequentially adjusting the adjustable loads on the grounding terminal, the first insertion confirmation terminal and the second insertion confirmation terminal on the direct current simulation interface, recording whether the charging pile can normally output under the condition that the charging pile is not grounded completely or the charging gun is not checked completely, and recording message information sent by the charging pile to the BMS simulation device;
(7) and sequentially adjusting the adjustable load on the ground terminal and the connection confirmation terminal on the alternating current simulation interface, recording whether the charging pile can normally output or not under the condition that the charging pile is not grounded completely or the charging gun is not checked completely, and recording message information sent to the BMS simulation device by the charging pile.
6. The charging pile interoperability testing method according to claim 5, wherein: the process of message communication comprises the following steps:
(1) in the handshaking and handshaking reply stage, the charging pile firstly sends a handshaking message to the BMS simulation device, and the BMS simulation device sends a handshaking reply message to the charging pile after receiving the handshaking message;
(2) In the charging parameter configuration stage, the BMS simulation device simulates the parameters of the battery and sends messages of the charging parameters to a charging pile, and the charging pile receives the messages and then mutually transmits the messages with the BMS simulation device so as to synchronize time, determine the maximum charging output capacity and confirm readiness;
(3) charging is carried out, and a charging pile and the BMS simulation device mutually transmit messages to determine the charging state until the charging pile is fully charged;
(4) and finishing charging.
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| CN202010627107.4A CN111856304A (en) | 2020-07-01 | 2020-07-01 | Charging pile interoperability test system and method |
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| CN202010627107.4A CN111856304A (en) | 2020-07-01 | 2020-07-01 | Charging pile interoperability test system and method |
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| CN113125889A (en) * | 2021-04-21 | 2021-07-16 | 阳光电源股份有限公司 | Charging pile and testing device, system and method thereof |
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