CN210742412U - Direct current fills test equipment of electric pile - Google Patents
Direct current fills test equipment of electric pile Download PDFInfo
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- CN210742412U CN210742412U CN201921397474.9U CN201921397474U CN210742412U CN 210742412 U CN210742412 U CN 210742412U CN 201921397474 U CN201921397474 U CN 201921397474U CN 210742412 U CN210742412 U CN 210742412U
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- direct current
- charging pile
- controller
- resistor
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Abstract
The utility model relates to a test device of a direct current charging pile, which comprises a charging gun seat, a charging gun for connecting the charging pile, a resistance module for simulating load during charging, a main switch and a resistance module which are connected between the charging gun seat and the resistance module, and a controller; the resistance module comprises a plurality of resistance loops, each resistance loop comprises at least one resistance string, and each resistance loop is provided with a corresponding branch switch; the controller is used for controlling the main switch and the branch switch according to the operation instruction. The test device can make the tester more simple and convenient when using the test device.
Description
Technical Field
The utility model relates to a direct current fills test equipment of electric pile.
Background
The pure resistive load testing equipment of the existing direct current charging pile has the advantages that the resistance is directly exposed, the resistance needs to be manually connected, and loads with different sizes are formed for testing. This operation process is complicated, loaded down with trivial details be unfavorable for the test of direct current stake of charging.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct current fills test equipment of electric pile to solve the current direct current and fill the inconvenient problem of test equipment of electric pile in the use.
In order to achieve the above object, the utility model provides a direct current fills test equipment of electric pile, a serial communication port, include
The charging gun seat is used for connecting a charging gun head of the charging pile;
the resistance module is used for simulating a load during charging;
the main switch is connected between the charging gun seat and the resistance module;
the resistance module comprises a plurality of resistance loops, and each resistance loop comprises at least one resistance string; each resistance loop is provided with a corresponding branch switch;
and the controller is used for controlling the main switch and the branch switch according to the operation instruction.
Has the advantages that: the resistance module of the test equipment comprises a plurality of resistance loops, wherein the resistance in each resistance loop is arranged in a resistance string mode, and manual connection of each resistance is not needed; and each resistance loop is correspondingly provided with a branch switch, so that the actually input load can be controlled in the form of the branch switch, and the test equipment is simpler and more convenient to use.
Further, the controller is connected with a driving circuit, and the driving circuit comprises an intermediate relay; the controller controls the main switch and the branch switch through the intermediate relay.
Further, the resistor string comprises a resistor and a copper bar. The mode fixed resistance who adopts the copper bar makes resistance integrate, makes things convenient for the tester to install, adjusts the access resistance in the test process.
Furthermore, more than two resistors are connected in series and in parallel in the resistor loop.
Furthermore, the device also comprises a current sensor and/or a voltage sensor, the controller is connected with the current sensor and/or the voltage sensor in a sampling mode, the output of the controller controls a display, and the display is used for displaying voltage and/or current. The tester can use the test card more conveniently through the display screen.
Furthermore, the electric energy meter is also included. Some information can be measured and displayed simultaneously only by the electric energy meter.
Drawings
Fig. 1 is a circuit connection structure diagram of the testing equipment of the dc charging pile of the present invention;
fig. 2 is the utility model discloses direct current fills electric pile's test equipment's drive circuit diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following detailed description is made with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.
According to the test equipment of the direct current charging pile, the main switch is controlled to realize the preparation starting of the test equipment for the direct current charging pile test and the control of whether the resistance module is connected or not through the received operation instruction; and the branch switch is controlled to realize that the secondary regulation resistance is put into, namely, a plurality of resistance loops are put into in detail, so that the load of the charging pile during charging is simulated.
The test equipment of the direct current charging pile comprises a charging gun seat, a contactor, a fuse, a shunt and a resistance module which are shown in figure 1. The rifle seat that charges can connect the different electric pile rifle heads that fill of adaptation, is a direct current that is furnished with the standard and charges the rifle seat. The resistance module comprises a plurality of resistance loops, each resistance loop comprises at least one resistance string, the resistance strings comprise resistors and copper bars, at least two resistors are integrally fixed together in a copper bar mode, the copper bars can be fixed through bolts, the fixing positions of the copper bars are reasonably arranged in the test equipment according to the distribution conditions, and the resistors in the resistance strings are U-shaped resistors.
In this embodiment, the contactors (KM1, KM2) between the charging gun holder and the fuse are main switches, the contactors (KM3, KM4, KM5, KM6, KM7) in each resistor loop are branch switches, that is, five resistor loops are provided in the resistor module, the first resistor loop includes one resistor string and the contactor KM3, the second resistor loop includes two parallel resistor strings and the contactor KM4, the third resistor loop includes two parallel resistor strings and the contactor KM5, the fourth resistor loop includes two parallel resistor strings and the contactor KM6, and the fifth resistor loop includes three parallel resistor strings and the contactor KM 7.
In this embodiment, the number and the resistance of the resistors in the resistor string are the same, and as another embodiment, the number and the resistance of the resistor string may be different.
In the present embodiment, two or more resistor strings are connected in parallel to the resistor circuit, and as another embodiment, two or more resistor strings may be connected in series to the resistor circuit.
In this embodiment, the main switch and the branch switch both adopt contactors, wherein the contactors specifically can adopt relays, and the cost is low, so that the main switch and the branch switch can be conveniently combined with a controller, and the control process is simple.
The test equipment of the direct current charging pile further comprises a control module, and the control module comprises a controller, a control panel and a driving circuit. Wherein, the controller adopts an embedded controller taking an STM32 series processor as a core.
The driving circuit is shown in fig. 2 and comprises an intermediate relay and a contactor coil, and the controller sends a command to control the attraction and disconnection of the corresponding intermediate relay, so that the on-off state of the main switch and the branch switch is controlled, and the step switching of the load to be simulated and the start and stop of the testing device are realized. For example, when the controller receives a command for controlling the connection of the fourth resistance loop, the controller firstly controls the intermediate relay KA6 to be closed, then the coil of the contactor KM6 is electrified, and then the contact of the corresponding contactor KM6 is attracted, so that the connection of the fourth resistance loop can be realized, that is, the input resistance meets the load requirement.
The control panel is connected with the liquid crystal display screen and the direct current electric energy meter, and the direct current electric energy meter is mainly used for sampling operation parameters such as voltage and current of the resistance load and information such as the opening-in state and the opening-out state of the equipment. The liquid crystal display screen is used as a man-machine interaction interface, the liquid crystal display screen is a touch screen, and testers can send control instructions to the controller through the liquid crystal display screen, such as requirements on loads and tests of certain functions. And the wiring terminal of the control panel is communicated with the liquid crystal display screen and the direct current electric energy meter by RS-485 communication.
In the present embodiment, the liquid crystal display is a touch panel; in another embodiment, the liquid crystal display only plays a role of display, and the control command is output to the controller by clicking a button on the control panel.
In the embodiment, the direct current electric energy meter samples information such as voltage, current and the like of the resistance load; in other embodiments, information such as voltage and current of the resistive load is directly collected by the corresponding voltage sensor and current sensor, and the sampled data is processed and displayed by the liquid crystal display screen.
In this embodiment, the liquid crystal display is used for displaying information such as voltage, current and the like in the test process in real time; in another embodiment, after the direct current electric energy meter collects information such as voltage and current of the over-resistance load, the information is directly processed and displayed on a screen of the direct current electric energy meter, and is not displayed through a liquid crystal display screen.
An emergency stop button is further arranged on the liquid crystal display screen or the control panel, the emergency stop button is used as an opening point to feed back possible accidents (emergency stop is pressed down) to the controller in time, and the controller controls the intermediate relay KA1 to further control the main switch, so that the contactors KM1 and KM2 are disconnected in time; meanwhile, a failure indicator lamp HG in the drive circuit is turned on. When an unexpected situation occurs, the test device can be controlled to stop the test program of the test device in time and be reminded through the fault indicating lamp.
Still include the fan among the direct current fills electric pile's the test equipment, test equipment can produce the heat at the operation in-process, in time takes away the heat through the fan, plays radiating effect, guarantees that test equipment moves at suitable temperature range, improves test equipment's safety, reliability.
This application adopts the commercial power to supply power for direct current electric energy meter, switching power supply and fan, and wherein switching power supply supplies power for control panel, auxiliary relay, different pilot lamps.
The test process of the test equipment of the direct current charging pile comprises the following steps:
(1) firstly, a tester inserts a charging gun of a charging pile into a charging gun seat of testing equipment;
(2) the tester sends a control instruction to the controller through the liquid crystal display screen;
the control command for switching on the main switches (contactors KM1 and KM2) is sent out through the liquid crystal display screen, the control command is transmitted to the control module through RS-485, the controller receives the control command, processes and controls the actuation of the intermediate relay KA1, coils of the contactor KM1 and the contactor KM2 are electrified, and then contacts of the contactor KM1 and the contactor KM2 are electrified and actuated, so that the control command for switching on the contactors KM1 and KM2 is realized.
According to the requirement of an input load, for example, the first resistance loop and the second resistance loop are required to be controlled to be connected, the controller receives, processes and controls the intermediate relay KA3 and the intermediate relay KA4 to be attracted, coils of the contactor KM3 and the contactor KM4 are electrified, contacts of the contactor KM3 and the contactor KM4 are electrified to be attracted, and control commands for connecting the first resistance loop and the second resistance loop are achieved.
(3) The liquid crystal display screen and the indicator light display the corresponding test result in real time;
in the testing process, the liquid crystal display screen displays information such as voltage, current and the like input by a load in real time; meanwhile, the test equipment running indicator light HG on the control panel is on, the running indicator light HG1 corresponding to the first resistance loop is on, and the running indicator light HG2 corresponding to the second resistance loop is on.
(4) Pressing an emergency stop button to stop the operation of the test equipment;
when a tester presses the emergency stop button, emergency stop is used as an opening point, the condition that accidents possibly occur or the operation of a test is damaged is timely fed back to the control panel, the control panel transmits a level signal to the controller, and the controller controls the intermediate relay KA1 to be disconnected, so that the contactor KM1 and the contactor KM2 are disconnected, the operation of the test equipment is stopped, at the moment, the controller controls the intermediate relay KA2 to be closed according to a sent command for controlling the intermediate relay KA1 to be disconnected, and the fault lamp HY is on.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, those skilled in the art can still make various changes, modifications or equivalents to the specific embodiments of the application, but these changes, modifications or equivalents are all within the protection scope of the claims of the present invention.
Claims (6)
1. A test device for DC charging pile is characterized by comprising
The charging gun seat is used for connecting a charging gun of the charging pile;
the resistance module is used for simulating a load during charging;
the main switch is connected between the charging gun seat and the resistance module;
the resistance module comprises a plurality of resistance loops, and each resistance loop comprises at least one resistance string; each resistance loop is provided with a corresponding branch switch;
and the controller is used for controlling the main switch and the branch switch according to the operation instruction.
2. The testing equipment of the direct current charging pile according to claim 1, wherein the controller is connected with a driving circuit, and the driving circuit comprises an intermediate relay; the controller controls the main switch and the branch switch through the intermediate relay.
3. The testing equipment of the direct current charging pile according to claim 1, wherein the resistor string comprises a resistor and a copper bar.
4. The testing equipment of the direct current charging pile according to claim 1, wherein more than two resistors are connected in series and in parallel in a resistor loop.
5. The direct current charging pile testing device according to any one of claims 1 to 4, further comprising a current sensor and/or a voltage sensor, wherein the controller is connected with the current sensor and/or the voltage sensor in a sampling manner, and outputs a control display for displaying voltage and/or current.
6. The direct current charging pile test apparatus according to any one of claims 1 to 4, further comprising an electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397474.9U CN210742412U (en) | 2019-08-26 | 2019-08-26 | Direct current fills test equipment of electric pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397474.9U CN210742412U (en) | 2019-08-26 | 2019-08-26 | Direct current fills test equipment of electric pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210742412U true CN210742412U (en) | 2020-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921397474.9U Active CN210742412U (en) | 2019-08-26 | 2019-08-26 | Direct current fills test equipment of electric pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210742412U (en) |
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2019
- 2019-08-26 CN CN201921397474.9U patent/CN210742412U/en active Active
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