CN220064688U - SMA battery charger control unit testing arrangement - Google Patents
SMA battery charger control unit testing arrangement Download PDFInfo
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- CN220064688U CN220064688U CN202321719520.9U CN202321719520U CN220064688U CN 220064688 U CN220064688 U CN 220064688U CN 202321719520 U CN202321719520 U CN 202321719520U CN 220064688 U CN220064688 U CN 220064688U
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- control unit
- battery charger
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- power supply
- storage battery
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 235000018290 Musa x paradisiaca Nutrition 0.000 claims description 4
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- 238000001514 detection method Methods 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 241000234295 Musa Species 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000013024 troubleshooting Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a testing device for an SMA storage battery charger control unit, which relates to the technical field of electrical testing devices and comprises a power supply module, a sensor signal simulation module, an optical coupler signal conversion module and a starting control module, wherein the power supply module takes 220V alternating current as input, outputs 110V direct current voltage and supplies power for the charger control unit; the sensor signal simulation module is provided with four paths of current simulation signal output, and the signals of the simulation current sensor and the voltage sensor are fed back to the storage battery charger control unit; the optical coupling signal conversion module is in butt joint with one input channel and three output channels of the control unit of the storage battery charger; and the starting control module controls the starting and stopping of the storage battery charger control unit through high and low levels. The device does not need high-voltage isolation in operation, ensures personal safety of operators, improves operation efficiency, reduces test blind areas, reduces fault detection difficulty, and is simple, reliable and convenient to operate.
Description
Technical Field
The utility model relates to the technical field of electrical testing devices, in particular to a testing device for an SMA storage battery charger control unit.
Background
The maintenance and detection of the SMA battery charger control unit needs to test the functions of the battery charger control unit, the existing test mode is relatively backward, a 1000V-2000V voltage source is provided for supplying power to the control unit by adopting a high-voltage power supply, an external control box is used for providing control signals, the output end of the battery charger is connected to a high-power load, normal working conditions are simulated, and the working state of the battery charger is monitored according to a display module of the control unit or a connection computer. Because the high-voltage power supply is used in the test, in order to ensure personnel safety in the test process, the test personnel and equipment need to be physically isolated, and high-voltage power-off operation is needed when each time the test personnel and equipment enter a test area for debugging, so that the operation efficiency is low. In addition, the prior art scheme can only simulate normal working conditions, the fault detection function of the battery charger cannot be tested, hidden danger of fault missing detection exists, the fault code of the equipment is not strong in directivity of faults, maintenance staff is required to fully understand the principle of the battery charger, and the technical requirements for the maintenance staff are high.
Disclosure of Invention
The utility model provides a testing device for an SMA storage battery charger control unit, which aims to solve the problems in the background technology, and the device only needs 220V mains supply for power supply, does not need a high-voltage power supply and does not need man-machine isolation; the sensor signal and the control signal can be generated by the testing device, and the multipath sensor signal and the control signal can be independently adjusted, so that the full-function testing requirement is met, the testing blind area is reduced, the fault directivity is improved, and the fault troubleshooting difficulty is reduced.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the testing device for the control unit of the SMA storage battery charger comprises a power supply module, a sensor signal simulation module, an optical coupler signal conversion module and a starting control module, wherein the power supply module takes 220V alternating current as input, sequentially passes through an idle switch, a power supply conversion circuit, a switch with a lamp and a safety, outputs 110V direct current voltage and supplies power for the control unit of the charger; the sensor signal simulation module is provided with four paths of current simulation signal output, and the signals of the simulation current sensor and the voltage sensor are fed back to the storage battery charger control unit; the optical coupling signal conversion module is in butt joint with one input channel and three output channels of the control unit of the storage battery charger; the starting control module comprises a switch with a lamp, a switch with the lamp and a fault lamp, wherein the switch with the lamp controls the starting and stopping of the control unit of the battery charger through high and low levels.
Preferably, the output voltage value of the power supply module is regulated by a potentiometer, the regulation range is 0-150VDC, the power of the power supply module is more than 500W, and a voltmeter is arranged on the panel and used for displaying the output voltage value of the power supply.
Preferably, the current analog signal uses a potentiometer to control the output voltage, the BUF634A chip is adopted to follow the voltage value, the output current capacity is enhanced, and the current range is 0-250mA.
Preferably, the output channel is driven by a SN75451 darlington transistor using an HFBR1528z fiber optic transmitter and the input channel is driven by an HFBR2528z fiber optic receiver.
Preferably, banana sockets are arranged at the ports of the input channel and the output channel, so that a signal generator and an oscilloscope are conveniently connected externally to receive and transmit signals and measure the signals.
Preferably, the starting control module is provided with two paths of temperature sensor analog circuits, which are composed of high-precision low-temperature drift resistors and simulate the temperature value of the storage battery.
Compared with the prior art, the utility model has the following beneficial effects:
(1) Through the arrangement of the power supply module, 220V alternating current commercial power is converted into direct current voltage to supply power for the control unit of the storage battery charger, no high-voltage direct current power supply is needed, physical high-voltage isolation is not needed during fault detection and debugging, the personal safety of operators is ensured, and the operation efficiency is improved;
(2) Through setting up sensor signal simulation module, can simulate the fault detection function of arbitrary operating mode in order to test battery charger, reduce the test blind area, also accessible simulation trouble assists the troubleshooting, has promoted the fault directionality, reduces the troubleshooting degree of difficulty.
(3) Through setting up start control module and opto-coupler signal conversion module, control signal passes through button control, reduces operating personnel's technical demand, and sensor signal simulation accessible potentiometre knob is adjusted in real time, easy operation is reliable, signal input output channel connects the socket, convenient to use.
Drawings
FIG. 1 is a circuit block diagram of the present utility model;
FIG. 2 is a schematic diagram of a power module of the present utility model;
FIG. 3 is a schematic diagram of a sensor signal simulation module of the present utility model;
FIG. 4 is a schematic diagram of an optical coupler signal conversion module according to the present utility model;
fig. 5 is a schematic diagram of the start control module of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to specific examples.
In an embodiment, as shown in fig. 1, a solid line frame is a battery charger control unit, and a circuit block diagram of the test device is arranged in a dotted line frame, and the test device comprises a power supply module, a sensor signal simulation module, an optical coupling signal conversion module and a starting control module.
The power module takes 220V alternating current as input, sequentially passes through an idle switch SW0, a power conversion circuit, a switch with a lamp SW3 and a safety F1, supplies direct current to a charger control unit, the output voltage value is regulated by a potentiometer RV5, the voltage range is 0-150VDC, the power of the power module is more than 500W, the power supply of the battery charger control unit is met, and a power supply voltmeter is arranged on a panel and used for displaying the output voltage value of a power supply. The +5V power supply and the +15V power supply required by the sensor signal simulation module, the optical coupler signal conversion module and the starting control module are reversely supplied by the storage battery charger control unit. The sensor signal simulation module is provided with four paths of current simulation signal output, output ports are OUT1-OUT4 respectively, the output ports are respectively connected to UE, IE, lout + and lbatt+ ports of the storage battery charger control unit, four potentiometers RV1-RV4 are used for controlling output voltages of all paths, each path uses one BUF634A chip to follow the voltage value, the output current capacity is enhanced, the current range can reach 0-250mA, and the full range of output current values of the voltage/current sensor in the SMA storage battery charger is met. Each output is connected with a high-precision low-temperature drift current detection resistor in series, and an INA4180A3 four-way current detection chip amplifies the voltage on the sampling resistor and outputs the amplified voltage to an ammeter to display the current value, so that the output current is regulated by a potentiometer. The optical coupler signal conversion module is provided with an input channel and an output channel, the output ports are H2, H3, H4 and H5 respectively and are connected with the same port of the control unit of the battery charger, the output channel uses an HFBR1528z optical fiber transmitter, the input channel uses an HFBR2528z receiver, the HFBR1528z optical fiber transmitter is driven and controlled by an SN75451 Darlington transistor, and all the ports of the input and output channels are connected to a banana socket of a panel of the test box through wires, so that the signal generator and the oscilloscope are convenient to receive and transmit signals and measure. The starting control module comprises a lamp switch SW1, a lamp switch SW2 and a fault lamp D1, wherein the lamp switches SW1 and SW2 are controlled to output high/low level through a switch, and a power supply voltage (0-150 VDC) is output to an SMA storage battery charger to control a storage battery charger control unit to start and stop. The fault feedback signal is composed of a +5V power supply and a fault lamp D1 light-emitting diode, and the on/off state indicates the presence/absence of faults. The starting control module is also provided with two paths of temperature sensor simulation circuits, which are composed of high-precision low-temperature drift resistors R1 and R2 and simulate the temperature value of the storage battery.
The working principle and the using method of the utility model are as follows: when the device is used, the interfaces of the modules are well connected with the storage battery charger control unit, the switch SWO is turned on and the switch SW3 with the lamp is turned on, the storage battery charger control unit is powered on, meanwhile, the storage battery charger control unit supplies power to the internal module of the device reversely, the switch SW1 with the lamp and the switch SW2 simulate the start and stop of the charger, the current values of the channels of the sensor signal simulation module are respectively set, the signal output of the sensor is simulated, various abnormal working conditions are realized, the detection of whether the abnormal working conditions of the storage battery charger control unit are normal or not is facilitated, the external signal generator and the oscilloscope are connected to the banana socket of the optical coupler signal conversion module, and the signal receiving, transmitting and measuring work is carried out.
The embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the utility model should be made and equivalents should be construed as falling within the scope of the utility model.
Claims (6)
1. The utility model provides a SMA battery charger control unit testing arrangement which characterized in that: the intelligent charging control system comprises a power supply module, a sensor signal simulation module, an optical coupler signal conversion module and a starting control module, wherein the power supply module takes 220V alternating current as input, sequentially outputs 110V direct current voltage through an idle switch SW1, a power supply conversion circuit, a switch with a lamp SW3 and a safety F1, and supplies power to a charger control unit; the sensor signal simulation module is provided with four paths of current simulation signal output, and the signals of the simulation current sensor and the voltage sensor are fed back to the storage battery charger control unit; the optical coupling signal conversion module is in butt joint with one input channel and three output channels of the control unit of the storage battery charger; the starting control module comprises a lamp switch SW1, a lamp switch SW2 and a fault lamp D1, wherein the lamp switches SW1 and SW2 control the starting and stopping of the storage battery charger control unit through high and low levels.
2. The SMA battery charger control unit testing apparatus of claim 1, wherein: the output voltage value of the power supply module is regulated by the potentiometer RV5, the regulating range is 0-150VDC, the power of the power supply module is more than 500W, and a voltmeter is arranged on the panel and used for displaying the output voltage value of the power supply.
3. The SMA battery charger control unit testing apparatus of claim 1, wherein: the current analog signal uses a potentiometer to control output voltage, and a BUF634A chip is adopted to follow the voltage value, so that the output current capability is enhanced, and the current range is 0-250mA.
4. The SMA battery charger control unit testing apparatus of claim 1, wherein: the output channel is driven by a SN75451 darlington transistor using an HFBR1528z fiber optic transmitter, and the input channel is driven by an HFBR2528z fiber optic receiver.
5. The SMA battery charger control unit testing apparatus of claim 4, further comprising: and banana sockets are arranged at the ports of the input channel and the output channel, so that the signal generator and the oscilloscope are conveniently connected externally to receive and transmit signals and measure the signals.
6. The SMA battery charger control unit testing apparatus of claim 1, wherein: the starting control module is provided with two paths of temperature sensor simulation circuits, which are composed of high-precision low-temperature drift resistors and simulate the temperature value of the storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321719520.9U CN220064688U (en) | 2023-07-03 | 2023-07-03 | SMA battery charger control unit testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321719520.9U CN220064688U (en) | 2023-07-03 | 2023-07-03 | SMA battery charger control unit testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220064688U true CN220064688U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321719520.9U Active CN220064688U (en) | 2023-07-03 | 2023-07-03 | SMA battery charger control unit testing arrangement |
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| Country | Link |
|---|---|
| CN (1) | CN220064688U (en) |
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2023
- 2023-07-03 CN CN202321719520.9U patent/CN220064688U/en active Active
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