CN210835114U - Energy-saving direct current fills electric pile detection device - Google Patents
Energy-saving direct current fills electric pile detection device Download PDFInfo
- Publication number
- CN210835114U CN210835114U CN201921733716.7U CN201921733716U CN210835114U CN 210835114 U CN210835114 U CN 210835114U CN 201921733716 U CN201921733716 U CN 201921733716U CN 210835114 U CN210835114 U CN 210835114U
- Authority
- CN
- China
- Prior art keywords
- direct current
- charging pile
- direct
- current
- electric energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000007600 charging Methods 0.000 claims abstract description 73
- 238000004088 simulation Methods 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 22
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 7
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 238000011217 control strategy Methods 0.000 description 7
- 238000010280 constant potential charging Methods 0.000 description 4
- 238000010277 constant-current charging Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides an energy-saving DC charging pile detection device, a main controller is connected to a DC charging pile through a CAN bus; the input end of the direct current load simulation module is connected to the output end of the direct current charging pile for simulating charging, the input end of the direct current charging pile is connected to a power grid, and the power grid provides electric energy for the direct current charging pile; the input end of the direct current load simulation module is cascaded with the input end of the electric energy feedback module, and the output end of the electric energy feedback module is connected to a power grid and used for feeding back electric quantity to the power grid; the main controller is in communication connection with the direct current load simulation module and the electric energy feedback module through optical fibers respectively, and the direct current load simulation module and the electric energy feedback module upload direct current side voltage current, alternating current side voltage current and unit temperature to the main controller through the optical fibers. The tested charging pile outputs energy for cyclic regeneration and utilization, and energy is saved. And the test site does not need to be provided with larger power supply capacity, the cost of the power supply capacity is reduced, and the installation space is saved.
Description
Technical Field
The utility model relates to a direct current fills electric pile detection device, concretely relates to energy-saving direct current fills electric pile detection device.
Background
The conventional method for testing the charging pile is to simulate the load of an electric automobile by adopting a resistance load or a storage battery and configure a portable charging pile detector to complete the performance detection of the charging pile, so that the service life, the volume and the weight are limited, and meanwhile, the charging energy is consumed in a heat energy form, so that the energy loss is objectively caused. The performance detection method for the charging facility of the electric automobile mainly has the following defects:
the battery load has long charging and discharging time and low efficiency, and cannot carry out rapid repeatability test, and the resistance load is consumed in the form of heat energy, thereby wasting electric energy;
the detection system needs to be matched with a portable charging pile detector for use, the battery types of the electric vehicle are diversified, different types of battery loads need to be replaced, and the flexibility is poor;
the large-capacity charging pile has large test load volume, higher cost and occupied space, and needs to consider the safety of the battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-saving direct current fills electric pile detection device adopts the energy repayment formula load based on two-way operation function, can realize the energy repayment, reaches energy saving and consumption reduction's purpose.
The technical scheme of the utility model:
an energy-saving DC charging pile detection device comprises a main controller, a DC load simulation module, an electric energy feedback module and a display screen,
the main controller is connected to the direct current charging pile through a CAN bus;
the input end of the direct current load simulation module is connected to the output end of the direct current charging pile for simulating charging, the input end of the direct current charging pile is connected to a power grid, and the power grid provides electric energy for the direct current charging pile;
the input end of the direct current load simulation module is cascaded with the input end of the electric energy feedback module, and the output end of the electric energy feedback module is connected to a power grid and used for feeding back electric quantity to the power grid;
the main controller is respectively in communication connection with the direct current load simulation module and the electric energy feedback module through optical fibers, and the direct current load simulation module and the electric energy feedback module upload direct current side voltage current, alternating current side voltage current and unit temperature to the main controller through the optical fibers;
the display screen is in communication connection with the main controller through an RS485 chip.
The main controller comprises a BMS simulator, an electrical signal sampling module and a switching value output control module, and the BMS simulator is in real-time communication with the direct-current charging pile.
The direct current load simulation module is characterized in that a direct current breaker, a direct current contactor and a direct current shunt are further connected between the input end of the direct current load simulation module and the output end of the direct current charging pile, and an isolation transformer, an alternating current contactor and an alternating current breaker are connected between the electric energy feedback module and a power grid.
The direct current load simulation module and the electric energy feedback module both comprise a three-phase full-bridge circuit formed by IGBTs.
And an alternating current side ABC end of the direct current load simulation module is in short circuit and serves as DC +, so that a BOOST unit is formed.
Compared with the prior art, the beneficial effects of the utility model are that: the tested charging pile outputs energy for cyclic regeneration and utilization, and energy is saved. And the test site does not need to be provided with larger power supply capacity, the cost of the power supply capacity is reduced, and the installation space is saved. The utility model discloses can simulate different grade type battery charge-discharge curve, set up constant voltage or constant current charged state wantonly, make test condition more be close to real car environment. Need not extra configuration and fill electric pile detector, this repayment type electronic load internal integration BMS simulator can be direct with fill electric pile communication. The volume is small under the same volume, and the device is suitable for field detection or laboratory detection and is convenient and safe to carry.
Drawings
Fig. 1 is a schematic view of the overall structure of the utility model.
Fig. 2 is a control strategy diagram of the main controller of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution:
an energy-saving DC charging pile detection device comprises a main controller 2, a DC load simulation module 3, an electric energy feedback module 4 and a display screen 5,
the main controller 2 is connected to the direct current charging pile 1 through a CAN bus;
the input end of the direct current load simulation module 3 is connected to the output end of the direct current charging pile 1 for simulating charging, the input end of the direct current charging pile 1 is connected to a power grid, and the power grid provides electric energy for the direct current charging pile 1;
the input end of the direct current load simulation module 3 is cascaded with the input end of the electric energy feedback module 4, and the output end of the electric energy feedback module 4 is connected to a power grid for feeding back electric quantity to the power grid;
the main controller 2 is in communication connection with the direct current load simulation module 3 and the electric energy feedback module 4 through optical fibers respectively, and the direct current load simulation module 3 and the electric energy feedback module 4 upload direct current side voltage current, alternating current side voltage current and unit temperature to the main controller 2 through the optical fibers;
and the display screen 5 is in communication connection with the main controller 2 through an RS485 chip.
The main controller 2 comprises a BMS simulator 12, an electrical signal sampling module 13 and a switching value output control module 14, wherein the BMS simulator 12 is in real-time communication with the direct current charging pile 1.
A direct current breaker 6, a direct current contactor 7 and a direct current shunt 8 are further connected between the input end of the direct current load simulation module 3 and the output end of the direct current charging pile 1, and an isolation transformer 9, an alternating current contactor 10 and an alternating current breaker 11 are connected between the electric energy feedback module 4 and a power grid.
The direct current load simulation module 3 and the electric energy feedback module 4 both comprise a three-phase full-bridge circuit formed by IGBTs.
And an alternating current side ABC end of the direct current load simulation module 3 is short-circuited as DC +, so that a BOOST boosting unit is formed.
And the main controller is responsible for processing analog quantity information and state information feedback and switching value control, simulating BMS and charging pile communication and controlling the power module algorithm. The main controller is composed of an ARM and an FPGA framework, the FPGA is responsible for real-time sampling and load side voltage and current, IGBT drive control, the ARM is responsible for software flow and control algorithm, and BMS analog communication control. The power module control algorithm comprises a constant-current constant-voltage operation control strategy of the direct-current load simulation unit and an inversion control strategy of the electric energy feedback module. BMS simulator control includes that main control unit simulation BMS communication message content designs and BMS simulator and fill electric pile communication protocol designs, mainly designs according to the communication standard of BMS and machine that charges. The display screen is communicated with the main controller through 485, and parameters such as battery type, constant-current or constant-voltage charging mode, impedance parameter, battery capacity, maximum charging current, charge curve and the like, temperature curve and fault parameter programming can be set on the interface. The master controller control strategy is shown in figure 2.
BMS simulator control strategy of the master controller: BMS communication message is by main control unit simulation generation, and BMS simulator simulation electric motor car and all messages of four stages of charging of filling electric pile include: CHM, CRM, CML, CRO, CCS, CST, CSD and the like, and the main controller configures parameters of all messages. The BMS simulator and the charging pile communication protocol are designed according to the GB/T27930-2015 communication protocol between the electric vehicle non-vehicle-mounted conductive charger and the battery management system, and are in interactive communication and control with the charging pile.
The main controller controls the constant-current operation of the direct-current load simulation module according to the following strategy: when a charging pile charges a direct current load simulation module in a constant current mode, a BMS simulator in a controller configures BCL message parameters for the charging pile to inform the charging pile of charging current required by the direct current load simulation module, at the moment, a main controller gives a charging reference current iref, a reference current signal is subtracted from a feedback current signal, the obtained difference is sent to a PI regulator, the sum is added with a direct voltage feedforward signal input by a direct current load simulation unit, the obtained sum is used as a modulation signal and is compared with a triangular carrier wave to obtain a PWM signal to control an IGBT of the direct current load simulation module, so that the IGBT of the direct current load simulation module is operated in the constant current charging mode to simulate the constant current charging characteristic.
The main controller controls the constant-voltage operation of the direct-current load simulation module according to the following strategy: when a charging pile charges a direct current load simulation module in a constant voltage mode, a BMS simulator in a controller configures BCL message parameters for the charging pile to inform the charging pile of the charging voltage needed by the direct current load simulation module, at the moment, a main controller gives a charging reference voltage, a reference direct voltage is subtracted from a feedback direct voltage signal, the obtained difference is sent to a PI regulator, the obtained difference is subtracted from a feedback current signal and subjected to PI control, the obtained difference is added with an input direct voltage feedforward signal to be used as a modulation wave, and the modulation wave is compared with a triangular carrier wave to obtain a PWM signal to control an IGBT of the direct current load simulation module, so that the IGBT operates in the constant voltage charging mode to simulate the constant voltage charging characteristic of a.
The main controller controls the direct current load simulation module to simulate the constant current or constant voltage charging process of the battery and the switching operation of two charging modes of the battery. The BMS simulator is in real-time communication with the charging pile, informs the charging pile of charging voltage and charging current required by the direct-current load simulation module and charging time of each charging mode, and enables the charging pile to truly simulate the charging characteristic curve of the battery of the electric automobile.
The electric energy feedback module feeds electric energy output by the charging pile back to a power grid control strategy: the main controller samples the output voltage and current of the charging pile in real time, calculates the active power consumed during charging, and simultaneously enables the electric energy feedback module to automatically adjust the flow direction and the size of the direct current bus energy, so that the bus voltage is kept constant, the grid-connected current on the power grid side is sinusoidal, and the power factor is kept at-1, which is the main target of the later-stage control. The energy feedback control strategy of the electric energy feedback module is a direct voltage side reference direct voltage signal udcrefAnd feedback direct voltage signal udcfeedSubtracting, passing through PI regulator, and feeding forward to obtain current signal idfAnd adding the sum to obtain a total active current signal, subtracting the total active current signal from the feedback current signal, sending the total active current signal and the feedback current signal to a PI controller, outputting a system voltage feedforward signal, taking the obtained voltage signal as a modulation signal, and comparing the modulation signal with a triangular carrier to obtain a PWM signal to control an IGBT (insulated gate bipolar translator) of an electric energy feedback module, so that the charging pile outputs electric energy to feed back the electric energy to a power grid.
To sum up, the utility model relates to an energy-saving direct current fills electric pile detection device can be directly with fill electric pile and be connected, inside integrated BMS simulator and electric motor car battery analog load, direct and fill electric pile communication, need not additionally to increase portable detector or BMS simulator, arbitrary battery charging curve can be simulated to electric motor car battery analog load, will fill electric pile output electric energy repayment electric wire netting simultaneously, reduce and fill required electric energy when electric pile test, reduce power side facility capacity requirement, economic environmental protection reaches the energy-conserving effect of electric energy.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An energy-saving direct current charging pile detection device is characterized by comprising a main controller (2), a direct current load simulation module (3), an electric energy feedback module (4) and a display screen (5),
the main controller (2) is connected to the direct current charging pile (1) through a CAN bus;
the input end of the direct current load simulation module (3) is connected to the output end of the direct current charging pile (1) for simulating charging, the input end of the direct current charging pile (1) is connected to a power grid, and the power grid provides electric energy for the direct current charging pile (1);
the input end of the direct current load simulation module (3) is cascaded with the input end of the electric energy feedback module (4), and the output end of the electric energy feedback module (4) is connected to a power grid and used for feeding back electric quantity to the power grid;
the main controller (2) is respectively in communication connection with the direct current load simulation module (3) and the electric energy feedback module (4) through optical fibers, and the direct current load simulation module (3) and the electric energy feedback module (4) upload direct current side voltage current, alternating current side voltage current and unit temperature to the main controller (2) through the optical fibers;
and the display screen (5) is in communication connection with the main controller (2) through an RS485 chip.
2. The energy-saving direct current charging pile detection device according to claim 1, wherein the main controller (2) comprises a BMS simulator (12), an electrical signal sampling module (13) and a switching value output control module (14), and the BMS simulator (12) is in real-time communication with the direct current charging pile (1).
3. The energy-saving direct-current charging pile detection device according to claim 1, wherein a direct-current breaker (6), a direct-current contactor (7) and a direct-current shunt (8) are further connected between the input end of the direct-current load simulation module (3) and the output end of the direct-current charging pile (1), and an isolation transformer (9), an alternating-current contactor (10) and an alternating-current breaker (11) are connected between the electric energy feedback module (4) and a power grid.
4. The device for detecting the charging pile according to claim 1, wherein the dc load simulation module (3) and the power feedback module (4) each comprise a three-phase full-bridge circuit formed by IGBTs.
5. The device for detecting the energy-saving direct-current charging pile according to claim 4, wherein an alternating-current side ABC end of the direct-current load simulation module (3) is short-circuited as DC + to form a BOOST boosting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733716.7U CN210835114U (en) | 2019-10-15 | 2019-10-15 | Energy-saving direct current fills electric pile detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733716.7U CN210835114U (en) | 2019-10-15 | 2019-10-15 | Energy-saving direct current fills electric pile detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210835114U true CN210835114U (en) | 2020-06-23 |
Family
ID=71252290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921733716.7U Active CN210835114U (en) | 2019-10-15 | 2019-10-15 | Energy-saving direct current fills electric pile detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210835114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702732A (en) * | 2021-08-17 | 2021-11-26 | 贵州电网有限责任公司 | Portable direct current charging pile fault testing system and detection method thereof |
-
2019
- 2019-10-15 CN CN201921733716.7U patent/CN210835114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702732A (en) * | 2021-08-17 | 2021-11-26 | 贵州电网有限责任公司 | Portable direct current charging pile fault testing system and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104158259B (en) | Based on the vehicle-mounted charge/discharge control method of V2G technology | |
| US9845021B2 (en) | On-vehicle power supply system and electric vehicle | |
| CN205846815U (en) | A kind of electric automobile split type DC charging motor system | |
| CN207910499U (en) | A kind of alternating current-direct current charging pile | |
| WO2012041159A1 (en) | In-vehicle solar energy charging system and method for controlling the same | |
| CN202135074U (en) | Fully-intelligent cell simulator | |
| CN103915856A (en) | Base station grid connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN103576025A (en) | Detection test system for energy storage power station grid connection | |
| CN104198856A (en) | Off-board charger test method and device | |
| CN109188147A (en) | A kind of charging equipment of electric automobile detection system | |
| CN106786889A (en) | One kind is provided multiple forms of energy to complement each other system | |
| CN115395542A (en) | Energy storage converter cabinet and energy storage system | |
| CN210835114U (en) | Energy-saving direct current fills electric pile detection device | |
| CN207518330U (en) | An a kind of machine rush-harvesting and rush-planting power distribution direct-current charging post system | |
| CN112234636A (en) | Energy storage converter direct current main contactor multi-parallel system | |
| CN111404248A (en) | Micro-grid system and method based on coupling of fuel cell test and charging pile | |
| CN103618328A (en) | Power conversion system of mobile energy accumulating device | |
| CN109193897A (en) | Power supply control method and power supply control device | |
| CN203275471U (en) | Cell simulator | |
| CN210294487U (en) | Nickel-hydrogen battery package assembly function test equipment | |
| CN209055600U (en) | Charging pile energy-saving aging device and charging system | |
| CN209184298U (en) | A kind of power supply control apparatus | |
| CN206259732U (en) | One kind is provided multiple forms of energy to complement each other system | |
| CN106208123A (en) | Electrokinetic cell energy-conservation partial volume apparatus | |
| CN206223883U (en) | A kind of energy-saving feedback type electronic load of automobile charging pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |