Applicable productsUsed for aging test of single-phase AC charging gun pile to ensure that the product shipment meets the requirements. Applicable to aging test of electric vehicle AC charging gun/pile products that comply with GB/T 18487.1-2015, IEC 62196-2-2016, SAE J1772-2017, SAE J1772-2017. The actual product is shown in the figure below:
Standard: single-phase three-phase national standard, European standard, American standard
Load voltage: single-phase AC 0~300V three-phase 0~420V (external input, power supply provided by the user)
Load current: 1~32A continuously adjustable
Test schematic diagram
The test schematic diagram is shown in the figure below. KM represents contactor, 13A represents AC socket, black square represents AC charging gun holder, control guide is control guide module, and M2 represents AC charging gun mode 2.
Test control principle
Device wiring schematic diagram, taking 10 products as an example, the back end is connected in series. The maximum number of tests is limited by the maximum allowable range of voltage drop. This device has 2 groups, each group of 10 products is tested online at the same time. Note: KMXA and KMXB are interlocked wiring and cannot be pulled in at the same time.
Brief introduction to the working principle of the electrical appliance:
Station 1, insert the product, KM contactor energizes, M2 product is powered on, and charging starts by controlling and guiding S2. If the product at station 1 is charged normally, KM1B is energized and KM1A is disconnected. If charging is not possible or there is no product, KM1A is energized and KM1B is disconnected, and electricity is directly transmitted to station 2.
Station 2, insert the product, KM contactor energizes, M2 product is powered on, and charging starts by controlling and guiding S2. If the product at station 2 is charged normally, KM2B is energized and KM2A is disconnected. If charging is not possible or there is no product, KM2A is energized and KM2B is disconnected, and electricity is directly transmitted to station 3.
And so on...
Station 10, insert the product, KM contactor energizes, M2 product is powered on, and charging starts by controlling and guiding S2. If the product at station 2 is charged normally, then KM12B is energized, KM12A is disconnected, and if charging is not possible or there is no product, KM12A is energized, KM12B is disconnected, and the power is directly transmitted to the load contactor.
The power meter measures the aging voltage and aging current of the product to be tested in turn, and stops aging if a defect is found.
Energy-feeding load
The load adopts energy-feeding load, which is also called energy-feeding electronic load. Compared with ordinary resistance load, its working mode is to use power electronic conversion technology to recycle the output energy of the power supply under test on the premise of completing the test power experiment, and feed the electric energy back to the power grid without pollution, which saves energy and does not generate a lot of heat, avoiding the problem of rising ambient temperature in the test site.
Picture of the whole machine
Pictures are for reference only, subject to the actual object (Figure 1)
Panel Description
Figure 1
①&emsp.Timer: Display test time
②&emsp.Start button: Start test timing
③&emsp.Stop button: Stop test timing
④&emsp.Power switch: Turn on the power
⑤&emsp.Buzzer: Timer end prompt
Figure 2
⑥&emsp.National standard gun terminal 32A
⑦&emsp.European standard gun terminal 32A
⑧&emsp.American standard gun terminal 48A
⑨&emsp.Tesla gun terminal 32A
⑩&emsp.Line sequence terminals L1, L2, L3, N, PE
⑪&emsp.Industrial socket 32A
⑫&emsp.American standard 1 6A socket
⑬&emsp.European standard 15A socket
⑭&emsp.National standard 16A socket
Figure 3
⑮&emsp.Control power switch
⑯&emsp.Load control power switch
⑰&emsp.Load box power input: connect to load box power
⑱&emsp.Control power input: connect to AC220V power
⑲&emsp.Load power input: connect to AC380V power
⑳&emsp.Instrument nameplate information
㉑&emsp.AC three-phase resistive load box
㉒&emsp.Temperature display screen
㉓&emsp.Power indicator light
㉔&emsp.Overtemperature buzzer
㉕&emsp.Cooling fan switch
㉖&emsp.A phase/L1 current size selection switch
㉗&emsp.B phase/L2 current size selection switch
㉘&emsp.C phase/L3 current size selection switch
㉙&emsp.Cooling fan power input
㉚&emsp.Load power supply connected to door lock
Instructions for use
1. First, connect (18) to the AC220V power supply, (19) to the AC380V power supply, connect the lead wire (17) to the load box, and connect (29) to the AC220V power supply.
2. In the power-off state, first connect the charging pile to be tested to the working position. 10 groups of charging piles can be connected at the same time. Then, according to the size of the charging pile design current, adjust the power size switch on the load box A, B, and C phases, and turn on the load box fan switch.
3. Turn on the (15) control switch and (16) power switch, adjust the required test time on the stopwatch, press the start button (2), the detection equipment starts working, and press the stop button (3) to stop the detection test.
