CN108152644A - Test system - Google Patents

Abstract

The invention discloses a kind of test systems.The test system includes：Test equipment, for testing charging pile；Resistance box is connect with test equipment, for testing when charging pile is used to carry out high-power charging, increases the bearing load of the extension mouth of test system.By the present invention, detection of the convenience to direct-current charging post is achieved the effect that.

Description

test system

technical field

The present invention relates to the field of circuits, in particular to a test system.

Background technique

With the popularity of electric vehicles, the use of off-board DC charging piles is becoming more and more widespread. For the normal use of non-vehicle DC charging piles, acceptance testing, normal charging maintenance inspection testing, communication protocol consistency testing, etc. are very important. However, in the related art, when the charging pile is used for high-power charging, the detection of the DC charging pile is inconvenient.

Aiming at the problem of inconvenient detection of DC charging piles in the related art, no effective solution has been proposed yet.

Contents of the invention

The main purpose of the present invention is to provide a test system to solve the problem of inconvenient detection of DC charging piles.

In order to achieve the above object, according to one aspect of the present invention, a test system is provided, including: test equipment, used to test the charging pile; a resistance box, connected to the test equipment, used to test When the pile is charged with high power, the carrying load of the expansion port of the test system is increased.

Optionally, the test system further includes: a socket, connected to the test equipment, for completing the connection with the charging pile.

Optionally, the socket includes: DC+/DC-/PE/S+/S-/CC1/CC2/A+/A- nine circuits.

Optionally, the test system further includes: a control lead resistance, connected to the test equipment, for detecting whether the connection with the charging pile is normal.

Optionally, the test system further includes: a voltage differential module, connected to the test equipment, for ensuring that the converted output voltage of the charging post is collected by the main control chip in the test system.

Optionally, the test system further includes: a collection module, configured to collect voltage data and current data of the charging pile.

Optionally, the test system further includes: a control module, configured to control the state of the charging pile according to the voltage data and the current data.

Optionally, the test system further includes: an industrial computer module, used to simulate the vehicle controller, communicate with the charging pile, match the parameters of the handshake phase, matching phase, charging phase, and end phase, and detect communication messages , analyzing the interface and state of the charging pile.

Optionally, the test system further includes: a programmable power supply module for simulating voltages in different states, using a load as a load of the charging pile, and cooperating with a predetermined switch to simulate the state of the battery pack.

Optionally, the test system further includes: an aluminum shell resistor, used to simulate the load of the auxiliary power supply, so as to judge the output state of the auxiliary power supply.

In the embodiment of the present application, the test system includes testing equipment for testing the charging pile; and a resistance box connected to the testing equipment for testing the increase in the charging pile when using the charging pile for high-power charging. Test the carrying load of the expansion port of the system. Because the test equipment can complete the physical connection, charging voltage monitoring, charging current monitoring, charging status test, communication status test, message storage, message analysis, automatic charging response, and control sequence failure according to the new national standard of the off-board charger and BMS communication protocol Simulation and other test items can quickly judge whether the charging pile meets the standard technical requirements and whether the charging pile is working normally after the installation and commissioning project is completed, and the resistance box can be charged at high power and when the expansion port is overloaded, the carrying load of the expansion port can be increased. The test proceeded normally. Therefore, the technical problem of inconvenient detection of the DC charging pile is solved, and the effect of convenient detection of the DC charging pile is achieved.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a structural diagram of a testing system according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an optional testing device according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of an optional low-voltage power supply circuit according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an optional system protection circuit according to an embodiment of the present invention; and

Fig. 5 is a schematic structural diagram of a testing system according to an embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

Fig. 1 is a structural diagram of a testing system according to an embodiment of the present invention. As shown in Fig. 1, the testing system includes: testing equipment for testing charging piles; a resistance box connected to the testing equipment for testing When the charging pile is used for high-power charging, the load of the extension port of the test system is increased.

Because the test equipment can complete the physical connection, charging voltage monitoring, charging current monitoring, charging status test, communication status test, message storage, message analysis, automatic charging response, and control sequence failure according to the new national standard of the off-board charger and BMS communication protocol Simulation and other test items can quickly judge whether the charging pile meets the standard technical requirements and whether the charging pile is working normally after the installation and commissioning project is completed, and the resistance box can be charged at high power and when the expansion port is overloaded, the carrying load of the expansion port can be increased. The test proceeded normally. Therefore, the technical problem of inconvenient detection of the DC charging pile is solved, and the effect of convenient detection of the DC charging pile is achieved.

The above test box includes an extended load, and the extended port can be used to increase the load to 60KW when charging with the necessary high power.

Fig. 2 is a schematic diagram of an optional testing device according to an embodiment of the present invention.

As shown in Figure 2, the test equipment includes: a controllable battery voltage simulation source; a pure resistive load connected to the controllable battery voltage simulation source; an electric vehicle main circuit control switch connected to the pure resistive load.

In the embodiment of this application, the test equipment of the portable DC charging pile test equipment includes: a controllable battery voltage simulation source, a purely resistive load, and an electric vehicle main circuit control switch. The portable DC charging pile test equipment can be used as an off-board charger With the new national standard of BMS communication protocol, physical connection, charging voltage monitoring, charging current monitoring, charging state test, communication state test, message saving, message analysis, automatic charging response, control timing fault simulation and other test items have been completed, which can be installed and debugged After the completion of the project, quickly judge whether the charging pile meets the standard technical requirements and whether the charging pile is working normally, solves the technical problem of inconvenient detection of DC charging piles, and achieves the effect of convenient detection of DC charging piles.

Optionally, the test system further includes: a socket connected to the test equipment and used to complete the connection with the charging pile. For example, the above-mentioned socket may be a charging gun socket output by a DC charger, and the socket may contain multiple circuits for docking with a charging pile. Optionally, the socket includes nine circuits of DC+/DC-/PE/S+/S-/CC1/CC2/A+/A-.

For example, the test system can include the following functions: the system includes a DC charger output charging gun socket, and the socket contains nine circuits of DC+/DC-/PE/S+/S-/CC1/CC2/A+/A-. The docking of the test system and the charging pile can be completed. The interface compatibility function of the new and old standards of the charging pile can be detected through the plugging of the standard socket.

Optionally, the test system further includes: controlling the leading resistance, connected to the test equipment, and used to detect whether the connection with the charging pile is normal. For example, the above test system may include a 1000Ω R4 control boot resistor. It can provide the determination of the connection confirmation of the control and guidance circuit in the CC1 circuit of the DC charging pile. For another example, the above-mentioned control steering resistor may include CC1 and CC2 loops.

Optionally, the test system further includes: a voltage differential module, connected to the test equipment, for ensuring that the converted output voltage of the charging pile is collected by the main control chip in the test system.

For example, the test system includes a voltage differential module, which is a 1000V to 5V DC/DC conversion module. Since the main control board cannot directly collect high-voltage signals, this method is used to ensure that the output voltage of the DC charging pile is converted by the main control chip collection.

Optionally, the test system further includes: an acquisition module, configured to acquire voltage data and current data of the charging pile. Optionally, the test system further includes: a control module, configured to control the state of the charging pile according to the voltage data and current data. Through the above embodiments, the system can collect and analyze the voltage and current data of the DC charging pile in real time, monitor and control the state of the charging pile.

Optionally, the above test system may also include a current sensor, which can convert the output current of the DC charging pile into a low-voltage signal and transmit it to the main control board.

Optionally, the above test system may also include a controllable battery voltage simulation source, a purely resistive load, and an electric vehicle main circuit control switch K5/K6, which can simulate the function of the battery pack of an electric vehicle during charging. For example, the system can simulate the battery pack status and charging process of the main circuit of electric vehicles through the battery voltage simulation source, pure resistive load, and K5/K6 (electric vehicle main circuit control switch).

Optionally, the test system also includes: an industrial computer module, which is used to simulate the vehicle controller, communicate with the charging pile, match the parameters of the handshake phase, matching phase, charging phase, and end phase, detect communication messages, and analyze the charging pile. interface and pile state. For example, the above test system may include a USB to CAN module, through which the industrial computer module can communicate with the DC charging pile. For another example, the industrial computer module in the system can simulate the vehicle controller, communicate with the DC charging pile through the USB to CAN module, and can match the parameters of the handshake stage, matching stage, charging stage, and end stage. And it can detect communication messages in real time, and analyze the status of charging pile interface, pile body and charging module.

Optionally, the test system further includes: a programmable power supply module, which is used to simulate voltages in different states, and uses the load as a load of the charging pile, and cooperates with a predetermined switch to simulate the state of the battery pack.

Optionally, the test system further includes: an aluminum shell resistor, used to simulate the load of the auxiliary power supply, so as to judge the output state of the auxiliary power supply. For example, the loop resistance is added to the auxiliary power supply circuit of A+/A-, which can detect the voltage and current output capabilities of the auxiliary power supply of the DC charging pile.

As shown in Figure 3, the main function of the low-voltage power supply circuit is to convert the AC 220V voltage into DC 12V/24V/15V for powering the acquisition components and control components.

As shown in Figure 4, the system protection circuit is mainly to protect the equipment from abnormal conditions such as overvoltage, overcurrent, and overtemperature, so as to prevent users from damaging the equipment due to misoperation.

Working principle: During the charging process, when the charging pile completes the connection confirmation through the control guide resistor of the device, it will start a self-test. The self-test voltage is the minimum value between the maximum output voltage of the charging pile and the maximum rechargeable voltage of the battery pack simulated by the software. After the self-inspection is over, the charging pile starts to communicate with the simulated vehicle controller of the industrial computer to perform charging handshake and parameter configuration. When the analog vehicle controller receives the CRO charging ready message of the charging pile, it starts the programmable voltage analog source to output a voltage value that is the same as the total voltage of the vehicle power battery in the BCP message in the parameter matching stage, and closes K5/K6 switch. The charging pile will start to output voltage according to the battery demand, and when the load is loaded, the DC pile will output current. Complete a test after stopping.

It should be noted that, as shown in Figure 5, the test system is mainly used in the commissioning, diagnosis, and acceptance of off-board charging piles for new energy electric vehicles. It can be mainly composed of portable DC charging pile test equipment (same as the above-mentioned test equipment) and high-power DC resistance box (same as the above-mentioned resistance box). The portable DC charging pile diagnosis and debugging equipment has the function of simulating the interface of electric vehicles and vehicles, and can be used for DC charging. Pile compatibility diagnosis, communication protocol consistency diagnosis, charging characteristics diagnosis of different mainstream vehicles, intermittent fault diagnosis, charging pile acceptance test, normal charging maintenance inspection test, idle charging pile reason inspection test, DC charging pile newly installed Portable DC charging pile diagnosis and debugging equipment is required in the functional verification of various charging piles such as charging piles after maintenance, charging piles after upgrading and modification, communication protocol consistency testing, and charging pile working performance confirmation. The portable DC charging pile test equipment can complete physical connection, charging voltage monitoring, charging current monitoring, charging status test, communication status test, message saving, message analysis, automatic charging response, Test items such as control timing fault simulation can quickly judge whether the charging pile meets the standard technical requirements and whether the charging pile is working normally after the installation and commissioning project is completed.

The above are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (10)

1. a kind of test system, which is characterized in that including：

Test equipment, for testing charging pile；

Resistance box is connect with the test equipment, for when test carries out high-power charging using the charging pile, increasing institute State the bearing load of the extension mouth of test system.

2. test system according to claim 1, which is characterized in that the test system further includes：

Socket is connect with the test equipment, for completing the connection with the charging pile.

3. test system according to claim 2, which is characterized in that the socket includes：

Nine circuits of DC+/DC-/PE/S+/S-/CC1/CC2/A+/A-.

4. test system according to claim 3, which is characterized in that the test system further includes：

Boot-strap resistor is controlled, is connected with the test equipment, it is whether normal with the connection of the charging pile for detecting.

5. test system according to claim 1, which is characterized in that the test system further includes：

Voltage differential module is connect with the test equipment, for ensureing the output voltage of charging pile quilt after conversion Main control chip acquisition in the test system.

6. test system according to claim 1, which is characterized in that the test system further includes：

Acquisition module, for acquiring the voltage data of the charging pile and current data.

7. test system according to claim 6, which is characterized in that the test system further includes：

Control module, for according to the voltage data and the current data, controlling the state of the charging pile.

8. test system according to claim 1, which is characterized in that the test system further includes：

Industrial personal computer module for simulating vehicle controller, is communicated with the charging pile, matching handshake phase, matching stage, Charging stage, the parameter of ending phase, and communication packet is detected, analyze the interface of the charging pile and pile body state.

9. test system according to claim 1, which is characterized in that the test system further includes：

Programmable power supply module for simulating the voltage of different conditions, and is served as the charging pile load with load, is opened with predetermined It closes with the use of simulated battery bag-like state.

10. test system according to claim 1, which is characterized in that the test system further includes：

Aluminum casing resistor, for simulating the load of accessory power supply, to judge the output state of the accessory power supply.