CN112462290B - Ground simulation comparison test system and method for power supply system - Google Patents
Ground simulation comparison test system and method for power supply system Download PDFInfo
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- CN112462290B CN112462290B CN202011069799.1A CN202011069799A CN112462290B CN 112462290 B CN112462290 B CN 112462290B CN 202011069799 A CN202011069799 A CN 202011069799A CN 112462290 B CN112462290 B CN 112462290B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a ground simulation comparison test system and method for a power supply system, which comprises a power supply system, 1553 bus equipment, a system console, a solar array simulator, a high-voltage stabilized power supply, an electronic load, a distributor, a high-low temperature box, a data acquisition instrument and a balance processor, wherein the power supply system comprises a storage battery pack, a bus voltage regulation unit and a storage battery charging control unit, wherein the storage battery pack comprises a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C; the bus voltage regulating unit comprises a shunt regulator, a power manager, a discharge regulator and a system controller; the secondary battery charging control unit includes a charging controller. The invention simulates the actual temperature difference of each battery group in the on-orbit through the high-low temperature box, is closer to the real working condition of the on-orbit operation of the spacecraft, and can verify the working capacity and reliability of the multi-unit grid-connected aircraft power supply system.
Description
Technical Field
The invention relates to a ground simulation comparison test system and method for a power supply system, and belongs to the field of design of ground simulation test systems for aircraft power supplies and power supply systems.
Background
With the rapid development of aerospace technology in China, the development of spacecrafts presents the characteristics of high power, long service life, multiple units and high reliability. The energy storage battery carried on the spacecraft has widely used a lithium ion storage battery, and the lithium ion storage battery has the characteristics of high specific energy, high working voltage, low self-discharge rate, long cycle life, good safety and the like, but the lithium ion storage battery has strict requirements on charging control, and particularly shows that the service life of the lithium ion storage battery is influenced by the temperature difference among battery packs and the voltage difference of battery monomers in the battery packs under the grid-connected power supply of the multi-battery-pack lithium ion storage battery, and potential safety hazards are generated in severe cases.
The traditional ground simulation system only simulates different on-rail power supply working conditions and load working conditions, such as the use working conditions of initiating explosive devices, rated load working conditions, short-time peak load working conditions and the like, and cannot meet the requirement of the multi-unit grid-connected power supply system for simulating the working condition verification caused by the difference of on-rail lithium ion storage batteries. Therefore, a ground simulation system is needed to verify the working capacity and reliability of the power supply system under working conditions such as the use condition of in-orbit initiating explosive devices, the rated load working condition, the short-time peak load working condition, the temperature difference of the battery pack, the voltage difference of the single battery and the like by simulating the difference working conditions of a plurality of groups of in-orbit lithium ion storage batteries.
Disclosure of Invention
The technical problem of the invention is solved: in order to overcome the defects of the prior art, the ground simulation comparison test system and method for the power supply system are provided, the verification that the multi-unit grid-connected power supply system simulates the use working condition of on-rail initiating explosive devices, the rated load working condition, the short-time peak load working condition, the temperature difference of the battery pack and the single voltage difference working condition is solved, and the ground simulation comparison test system and method are widely applied to the ground simulation and verification of high-voltage and low-voltage power supply systems.
The technical solution of the invention is as follows:
a ground simulation comparison test system of a power supply system comprises the power supply system, 1553 bus equipment, a system console, a solar array simulator, a high-voltage stabilized power supply, an electronic load, a distributor, a high-low temperature box, a data acquisition instrument and a balance processor,
the power supply system comprises a storage battery pack, a bus voltage regulating unit and a storage battery charging control unit, wherein the storage battery pack comprises a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C; the bus voltage regulating unit comprises a shunt regulator, a power manager, a discharge regulator and a system controller; the storage battery charging control unit comprises a charging controller;
when ground power supply is firstly carried out, the power of the high-voltage stabilized power supply is transmitted to a power distributor through a power manager and distributed to an electronic load by 2.6kW x 3;
the power supply array power of the solar array simulator is regulated through shunting to enable the voltage to be stabilized within a certain range, and the voltage is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW x 3; a charging array of the solar array simulator charges a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C;
when the grid is turned into a shadow region, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, and the grid is connected and then transmitted to a distributor through a power manager to be distributed to an electronic load by 2.6kW 3;
the charging controller controls the charging parameters of the lithium ion battery and the setting of the starting and the stopping of the charging;
the system controller measures the running state parameters of the power supply system, carries out fault diagnosis and analysis, sends the measured parameters to the system measurement and control console and 1553B bus equipment, and receives control instructions sent by the system measurement and control console and the 1553B bus equipment;
the high-low temperature box is used for simulating the temperature difference among the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
the data acquisition instrument is used for acquiring monomer voltages of the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
and the equalizing processor is used for adjusting the cell voltage in the lithium ion storage battery pack.
Further, the method comprises multi-unit temperature difference simulation and single-unit voltage difference simulation.
Further, for the unit temperature difference simulation, the specific steps are as follows:
3.1, constructing a ground simulation comparison test system of the power supply system;
3.2 the power supply system is powered up, and the electronic load is set to be 2.6kW 3, namely, the power of the high-voltage stabilized power supply is sent to the distributor through the power manager to be distributed to the electronic load to be 2.6kW 3; the system works in a stabilized voltage supply mode;
3.3, setting a power supply array and a charging array of the solar array simulator into a subarea and setting the subarea as a ground shadow mode; when the power of the high-voltage stabilized power supply is converted into a shadow area from a 2.6kW/3 mode which is transmitted to a distributor through a power manager and distributed to an electronic load, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, is transmitted to the distributor through the power manager after being connected to the grid and is distributed to the electronic load in the 2.6kW/3 mode, and the shadow area is converted into an illumination area after running for a certain time; the power supply array power of the solar array simulator enables the voltage to be stabilized in a certain range through a shunt regulation function, and is transmitted to a distributor through a power manager to be distributed to an electronic load by 2.6kW x 3; a charging array of the solar array simulator charges a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C, the operation is changed into a shadow area to operate after a certain time, and the system sets the shadow area and an illumination area to automatically circulate;
3.4 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control at a certain time before and after each circle of the battery is converted into a shadow area and is converted into an illumination area;
3.5, after a plurality of cycles, in a shadow area, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, after grid connection, the lithium ion storage battery A is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW/3 mode to be converted into power of a high-voltage stabilized power supply, and the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW/3 mode, so that a power supply system is powered off;
3.6 setting the high-low temperature box at a certain temperature until the temperatures of the lithium ion storage battery pack A and the lithium ion storage battery pack B are balanced;
3.7 the power system is powered up, each battery pack is filled according to the curve set by the charging controller, when the power of the high-voltage stabilized power supply is converted into a shadow area from a mode of distributing to an electronic load by a distributor through a power manager, a lithium ion battery pack A is transmitted through a discharge regulation a, a lithium ion battery pack B is transmitted through a discharge regulation B and a lithium ion battery pack C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to the distributor through the power manager to be distributed to the electronic load in a mode of 2.6kW 3, and the shadow area and the illumination area are automatically circulated;
3.8 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control at a certain time before and after each circle of the image is converted into a shadow area and before and after the image is converted into an illumination area;
3.9 after a plurality of cycles, when the battery temperature is balanced, recording the time of the battery temperature balance and the battery full charge time; when the power is switched from a shaded area, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power is converted into the power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, and a power supply system is powered off;
3.10 setting a certain temperature in the high-low temperature box until the temperatures of the lithium ion storage battery pack A and the lithium ion storage battery pack B are balanced;
3.11 the power system is powered up, each battery pack is fully charged according to the curve set by the charging controller, when the power of the high-voltage stabilized power supply is converted into a shadow region from a mode of distributing to an electronic load by a distributor through a power manager, a lithium ion battery pack A is transmitted through a discharge regulation a, a lithium ion battery pack B is transmitted through a discharge regulation B and a lithium ion battery pack C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to the distributor through the power manager to be distributed to the electronic load in a 2.6kW 3 mode, the shadow region and the illumination region are automatically circulated, relevant parameters are recorded, and the battery temperature and the battery full charge starting point parameters are observed;
3.12 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control at a certain time before and after each circle is converted into a shadow area and is converted into an illumination area;
3.13 after a plurality of cycles, when the battery temperature is balanced, recording the time of the battery temperature balance and the battery full charge time; when the power is switched off, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power is converted into the power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, a power supply system is powered off, and a high-low temperature box is switched off;
3.14 after the experiment is finished, exporting the data, and utilizing a ground simulation system to make a corresponding curve to evaluate the working capacity of the power supply system under different temperature differences and the correctness and effectiveness of corresponding charging control measures.
Further, when the ground shadow mode is set, the illumination area 54min and the shadow area 37min are defined as 1 cycle.
Further, for the monomer voltage difference simulation, the specific steps are as follows:
6.1 using a battery equalization processor to regulate the voltage of the corresponding monomer of the modules of the lithium ion storage battery A, the lithium ion storage battery B and the lithium ion storage battery C:
6.2, forming a verification test system by the product and ground equipment;
6.3 the power supply system is powered up, and the electronic load is set to be 2.6kW 3, namely, the power of the high-voltage stabilized power supply is sent to the distributor through the power manager to be distributed to the electronic load to be 2.6kW 3;
6.4 generating a control command to the charge controller through 1553B bus equipment, and starting charge balance control of the lithium ion storage battery;
6.5, the power supply array power of the solar array simulator is converted into an illumination area, the voltage is stabilized in a certain range through a shunt regulation function, and the power supply array power is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW × 3; charging a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C by a charging array of the solar array simulator, and operating for a certain time;
6.6 when the area is turned into a shadow area, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, and after grid connection, the grid connection is carried out, a distributor is distributed to an electronic load in a 2.6 kW-3 mode, and the operation is carried out for a certain time; automatically circulating the shadow area and the illumination area;
6.7 recording the voltage of the monomer in the lithium ion storage battery A, the lithium ion storage battery B and the lithium ion storage battery C in the charging and shadow region power supply state in each cycle, and observing the change trend of the monomer voltage;
6.8, after a plurality of cycles, in a shadow area, the lithium ion storage battery A transfers power through a discharge regulation a, the lithium ion storage battery B transfers power through a discharge regulation B and the lithium ion storage battery C transfers power through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6 kW/3 mode, the power is converted into power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6 kW/3 mode, a power supply system is powered off, and data collection is stopped;
6.9 after the test is finished, exporting the data, and utilizing a ground simulation system to manufacture corresponding curves to evaluate the working capacity of the power supply system under different monomer voltage differences and the correctness and effectiveness of corresponding charging control measures.
Further, the method for adjusting the voltage of the corresponding monomer of the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C module by using the battery equalization processor comprises the following steps:
increasing the voltage of any monomer in each module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C by 100mV relative to the voltage of the rest monomers;
adjusting the voltage of any monomer in any module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C to be 100mV lower than that of the rest monomers;
and increasing the voltage of any two monomers in each module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C by 100mV relative to the voltage of the rest monomers.
Compared with the prior art, the invention has the advantages that:
(1) The invention can simulate the working condition related to the storage battery pack on the basis of a conventional simulation system, namely can simulate the working capacity and reliability of a multi-unit grid-connected aircraft power supply system under the working conditions of temperature difference, monomer voltage difference and the like of the battery pack on the basis of the use working condition of the rail initiating explosive device, the rated load working condition and the short-time peak load working condition;
(2) According to the invention, the actual temperature difference of each battery group in the on-orbit is simulated through the high-low temperature box, so that the actual working condition of the on-orbit operation of the spacecraft is closer to, and the working capacity and reliability of the multi-unit grid-connected aircraft power supply system can be verified;
(3) According to the invention, through the setting of the balance processor and the actual difference between the single batteries of each battery group of the data acquisition instrument in orbit, the actual working condition of the spacecraft in orbit operation is closer, and the working capacity and reliability of the multi-unit grid-connected aircraft power supply system can be verified;
(4) The simulation of the relevant working conditions of the storage battery can be widely applied to the completeness of the verification working conditions of other types of batteries;
(5) The invention relates to the simulation of the working condition of a battery, which more sufficiently and effectively verifies the on-orbit long-term working capability of an aircraft power supply system, the interface matching among single-machine equipment and the correctness and the effectiveness of system fault mode criteria and countermeasures;
(6) The invention verifies that the completeness of the working condition can be an effective basis for evaluating the reliability of the aircraft;
(7) The invention solves the verification problem of complex working conditions such as the in-orbit initiating explosive device use working condition, the rated load working condition, the short-time peak load working condition, the storage battery temperature or monomer difference and the like of the power supply system, provides a specific verification method, and can be widely applied to ground simulation and verification of high-voltage and low-voltage power supply system systems.
Drawings
FIG. 1 is a block diagram of a ground simulation comparison and test system for a power system according to the present invention;
fig. 2 is a battery charge equalization graph.
Detailed Description
The present invention will be described in detail with reference to examples.
As shown in fig. 1, a power system ground simulation comparison test system is characterized in that: comprises a power supply system, 1553 bus equipment, a system console, a solar array simulator, a high-voltage stabilized power supply, an electronic load, a distributor, a high-temperature box, a low-temperature box, a data acquisition instrument and a balance processor,
the power supply system comprises a storage battery pack, a bus voltage regulating unit and a storage battery charging control unit, wherein the storage battery pack comprises a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C; the bus voltage regulating unit comprises a shunt regulator, a power manager, a discharge regulator and a system controller; the storage battery charging control unit comprises a charging controller;
when ground power supply is firstly carried out, the power of the high-voltage stabilized power supply is transmitted to a power distributor through a power manager and distributed to an electronic load by 2.6kW x 3;
the power supply array power of the solar array simulator is regulated through shunting to enable the voltage to be stabilized within a certain range, and the voltage is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW x 3; a charging array of the solar array simulator charges a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C;
when the grid is turned into a shadow region, the lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, and the grid is connected and then transmitted to a distributor through a power manager to be distributed to an electronic load by 2.6kW 3;
the charging controller controls the charging parameters of the lithium ion battery and the setting of the starting and the stopping of the charging;
the system controller measures the running state parameters of the power supply system, performs fault diagnosis and analysis, sends the measured parameters to the system measurement and control console and 1553B bus equipment, and receives control instructions sent by the system measurement and control console and the 1553B bus equipment;
the high-low temperature box is used for simulating the temperature difference among the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
the data acquisition instrument is used for acquiring the monomer voltages of the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
and the equalizing processor is used for adjusting the cell voltage in the lithium ion storage battery pack.
The embodiment comprises 3 groups of lithium ion storage battery temperature difference simulation working conditions and 3 groups of lithium ion storage battery single body voltage difference simulation working conditions.
(1) The embodiment of the temperature difference simulation working condition of the 3 groups of lithium ion storage batteries comprises the following steps:
1) Connecting the products to be tested and ground equipment into a system according to the attached figure 1;
2) When a certain aerospace power supply system is powered up, the electronic load 2.6kW 3 is set to 2700W, namely, the power of the high-voltage stabilized power supply is transmitted to the power distributor through the power manager to be distributed to the electronic load 2.6kW 3, and the system works in a stabilized power supply mode;
3) The charging curve of the lithium ion storage battery pack A/B/C is set to be curve 7 (89.54V of the battery pack and 4.05V of the battery pack) by sending an instruction to the charging controller through a 1553 bus device.
4) Setting a power supply array and a charging array of a solar array simulator as a subarea, and setting the subarea as a ground shadow mode (an illumination area 54min and a shadow area 37min are defined as 1 cycle);
5) The power of the high-voltage stabilized power supply is converted into a shadow area lithium ion storage battery A through a discharge regulation a and a lithium ion storage battery B through a discharge regulation B, and the lithium ion storage battery C is transferred through a discharge regulation C from a mode of transmitting the power to a distributor through a power manager and distributing the power to an electronic load for 2.6kW and 3, and the shadow area runs for 37min;
6) The power supply array power of the solar array simulator is converted into an illumination area, the voltage is stabilized in a certain range through a shunt regulation function, and the power supply array power is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW x 3; charging the lithium ion storage battery pack A/B/C by a charging array of the solar array simulator, setting the charging current of each group of batteries to be 14A, operating for 54min, then switching to a shadow area to operate for 37min, and automatically circulating the shadow area and an illumination area set by the system;
7) After a plurality of cycles, when the battery temperature is balanced, the battery temperature balancing time and the battery full charge time are recorded. When the power is switched off from a shaded area, a lithium ion storage battery A is transmitted through a discharge regulation a, a lithium ion storage battery B is transmitted through a discharge regulation B, and a lithium ion storage battery C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power is converted into power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, and a certain space power supply system is switched off;
8) Setting the temperature of the high-low temperature box 1 to be 10 ℃ and the temperature of the high-low temperature box 2 to be 5 ℃ until the temperatures of the lithium ion storage battery pack A and the lithium ion storage battery pack B are balanced;
9) When a certain space power supply system is powered up, the power supply array of the square array simulator outputs power, and the lithium ion storage battery pack A/B/C is charged until the power supply array is fully charged according to a curve 7 (89.54V of the battery pack and 4.05V of a monomer) set by the charging controller;
10 When the power of the high-voltage stabilized power supply is converted into a shadow area from a 2.6 kW/3 mode which is transmitted to a distributor through a power manager and distributed to an electronic load, a lithium ion storage battery A is transmitted through a discharge regulation a, a lithium ion storage battery B is transmitted through a discharge regulation B, and a lithium ion storage battery C is transmitted through a discharge regulation C, and after grid connection, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6 kW/3 mode, so that automatic circulation between the shadow area and an illumination area is performed;
11 For 5min before and after the shadow region and for 5min before and after the illumination region, the battery pack voltage, the charge and discharge current, the battery temperature, the battery start point voltage and the battery start time are recorded.
12 After a plurality of cycles, the shadow region lithium ion storage battery A transfers power through a discharge regulation a, the lithium ion storage battery B transfers power through a discharge regulation B and the lithium ion storage battery C transfers power through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6 kW/3 mode, the power is converted into high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6 kW/3 mode, and a certain space power supply system is powered off;
13 The set temperature of the high-low temperature box 1 is 5 ℃, the set temperature of the high-low temperature box 2 is 0 ℃ until the temperatures of the lithium ion storage battery pack A and the lithium ion storage battery pack B are balanced;
14 Power up a certain space power supply system, outputting a power supply array of the square array simulator, and charging the lithium ion storage battery pack A/B/C according to a curve 7 (89.54V of the battery pack and 4.05V of a monomer) set by the charging controller until the lithium ion storage battery pack A/B/C is fully charged;
15 The power of the high-voltage stabilized power supply is converted into a shadow region lithium ion storage battery A from a mode of transmitting the power to a distributor through a power manager to be distributed to an electronic load by 2.6kW x 3, the power is transmitted to a shadow region lithium ion storage battery A through a discharge regulation a, a lithium ion storage battery B through a discharge regulation B and a lithium ion storage battery C through a discharge regulation C, the power is transmitted to the distributor through the power manager to be distributed to the electronic load by 2.6kW x 3 after grid connection, and the shadow region and an illumination region automatically circulate;
16 5min before and after the shadow area and 5min before and after the illumination area, and recording the voltage of the battery pack, the charging and discharging current, the temperature of the battery, the voltage of a battery start control point and the time of battery start control.
17 A few cycles later, when the battery temperature is balanced, the time of battery temperature balance and the time of battery full charge are recorded. The shadow region lithium ion storage battery A is transmitted through a discharge regulation a, the lithium ion storage battery B is transmitted through a discharge regulation B, and the lithium ion storage battery C is transmitted through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power is converted into power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, a certain space power supply system is powered off, and the high-low temperature box 1 and the high-low temperature box 2 are shut down.
18 After the test is finished, the data are exported, and a corresponding curve is made by using a ground simulation system to evaluate the working capacity of the power supply system under different temperature differences and the correctness and effectiveness of corresponding charging control measures.
The test results are as follows
The temperature condition of the batteries of the three units and the voltage condition of the battery pack are respectively observed by setting the high-low temperature box 1 to be 10 ℃ and setting the high-low temperature box 2 to be 5 ℃, and the temperature condition of the battery pack of the three units and the voltage condition of the batteries and the battery pack can be seen in a table 1 after the temperature is stable.
Table 1 working condition 1 battery temperature parameter table
| Serial number | Battery pack | Temperature set value | Measured value |
| 1 | Unit A | 10℃ | 11.5℃ |
| 2 | Unit B | 5℃ | 6.5 |
| 3 | Unit C | At room temperature | 24.5℃ |
And setting a square matrix simulator to enter a ground shadow mode, carrying out illumination for 54min, carrying out shadow 37min in-out shadow circulation, and showing discharge parameters of shadow areas of the storage batteries of the three units in a circulation process in a table 2 and charging parameters of the illumination areas in a table 3.
Table 2 working condition 1 battery discharge parameter table
Table 3 working condition 1 battery charging parameter table
The temperature of the three-unit battery pack and the voltage of the battery pack are respectively observed by setting the high-low temperature box 1 to be 5 ℃ and setting the high-low temperature box 2 to be 0 ℃, and the temperature of the three-unit battery pack and the voltage of the battery pack can be seen in a table 4 after the temperature is stabilized.
Table 4 working condition 2 battery temperature parameter table
| Serial number | Battery pack | Temperature set value | Measured value |
| 1 | Unit A | 5℃ | 6.5℃ |
| 2 | Unit B | 0℃ | 1.5 |
| 3 | Unit C | At room temperature | 23.5℃ |
And setting a square matrix simulator to enter a ground shadow mode, carrying out illumination for 54min, carrying out shadow 37min in-out shadow circulation, and showing discharge parameters of shadow areas of the storage batteries of the three units in a circulation process in a table 5 and charging parameters of the illumination areas in a table 6.
TABLE 5 working condition 2 battery discharge parameter table
Table 6 working condition 2 battery charging parameter table
The test data of the two working conditions are analyzed, the temperature difference between machine sets reaches 20 ℃, and the voltage consistency of the battery packs of the three machine sets is good at different temperatures. Under the condition that the three units are in balanced discharge, the difference between the charging and discharging currents does not exceed 2A under the condition that the three units are in balanced discharge, so that the charging and discharging cycles of the lithium ion battery are still normal and the power subsystem works normally under the condition that the temperature deviation among the three units of the lithium ion storage battery reaches 20 ℃.
(2) The embodiment of the invention for simulating the working condition of the voltage difference of the 3 groups of lithium ion storage battery monomers comprises the following steps:
1) And (3) using a battery equalization processor to regulate the voltage of the corresponding monomer of the lithium ion storage battery module: module a of lithium ion battery a: monomer 3 was adjusted 100mV higher, module b of lithium ion battery a: the cell 9 was raised by 100mV and the cell voltage of the lithium ion battery A/B/C was recorded using the data acquisition instrument 34970.
2) Connecting the tested products and ground equipment into a system according to the attached figure 1;
3) When a certain aerospace power supply system is powered up, the electronic load 2.6kW 3 is set to 2700W, namely, the power of the high-voltage stabilized power supply is transmitted to the power distributor through the power manager to be distributed to the electronic load 2.6kW 3, and the system works in a stabilized power supply mode;
4) The charging curve of the lithium ion storage battery pack A/B/C is set to be curve 7 (89.54V of the battery pack and 4.05V of the battery pack) by sending an instruction to the charging controller through a 1553 bus device.
5) And generating a control command to the charge controller through 1553B bus equipment, and starting charge balance control of the lithium ion storage battery.
6) Setting a power supply array and a charging array of a solar array simulator as a subarea, and setting the subarea as a ground shadow mode (an illumination area 54min and a shadow area 37min are defined as 1 cycle);
7) The power of the power supply array is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW x 3, and the power of the power supply array is converted into the power of the solar square array simulator, so that the voltage is stabilized within a certain range through a shunt regulation function, and the power is transmitted to the distributor through the power manager and distributed to the electronic load by 2.6kW x 3; charging the lithium ion storage battery pack A/B/C by a charging array of the solar array simulator, setting the charging current of each group of batteries to be 14A, and running for 54min;
8) The lithium ion storage battery group A converted into the shadow region is transmitted through a discharge regulation a, a lithium ion storage battery group B through a discharge regulation B and a lithium ion storage battery group C through a discharge regulation C, is transmitted to a distributor through a power manager after being connected to the grid, is distributed to an electronic load in a 2.6 kW-3 mode, and operates for 37min; automatically circulating the shadow area and the illumination area;
9) The data acquisition instrument 34970 is used for recording and recording the voltage of a single battery voltage monomer of the lithium ion storage battery pack A/B/C in the states of charging in an illumination area and supplying power in a shadow area every cycle, and observing the change trend of the voltage monomer;
10 After 46 cycles, the shaded lithium ion storage battery group A transfers power through a discharge regulation a, the lithium ion storage battery group B transfers power through a discharge regulation B and the lithium ion storage battery group C transfers power through a discharge regulation C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power is converted into high-voltage stabilized power supply power, the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, a certain space power supply system is powered off, and a data acquisition instrument 34970 is powered off.
11 After the test is finished, the data are exported, and a corresponding curve is made by using a ground simulation system to evaluate the working capacity of the power supply system under different monomer voltage differences and the correctness and effectiveness of corresponding charging control measures.
The test results are shown in Table 7 and FIG. 2:
TABLE 7 Unit A open-circuit state monomer voltage summary table
Through test data analysis, the voltage difference of the single lithium ion storage battery is reduced by about 50mV for 46 circles, the voltage difference of the single lithium ion storage battery is reduced, and the charge equalization function of the power subsystem is effective.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (4)
1. A ground simulation comparison test method for a power supply system is characterized by comprising the following steps: comprises multi-unit temperature difference simulation and single-body voltage difference simulation,
for the unit temperature difference simulation, the specific steps are as follows:
3.1, constructing a ground simulation comparison test system of the power supply system;
3.2, the power supply system is powered up, an electronic load is set to be 2.6kW x 3, namely, the power of the high-voltage stabilized power supply is output to the power manager and is sent to the power distributor through the power manager to be distributed to the electronic load to be 2.6kW x 3; the system works in a stabilized voltage supply mode;
3.3, setting a power supply array and a charging array of the solar array simulator into a subarea and setting the subarea as a ground shadow mode; outputting the power of the high-voltage stabilized power supply to a power manager, sending the power to a distributor through the power manager to be distributed to an electronic load 2.6kW × 3 mode, transferring the power to a shadow area by a lithium ion storage battery A through a discharge regulator a, a lithium ion storage battery B through a discharge regulator B and a lithium ion storage battery C through a discharge regulator C, sending the power to the distributor through the power manager after grid connection to be distributed to the electronic load 2.6kW × 3 mode, and converting the shadow area to an illumination area after running for a certain time; the power supply array power of the solar array simulator enables the voltage to be stabilized in a certain range through a shunt regulation function, and is transmitted to a distributor through a power manager to be distributed to an electronic load by 2.6kW x 3; a charging array of the solar array simulator charges a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C, the operation is converted into a shadow area to operate after a certain time, and the shadow area and an illumination area are set by the system to automatically circulate;
3.4 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control at a certain time before and after each circle of the battery is converted into a shadow area and is converted into an illumination area;
3.5, after a plurality of cycles, when the power is converted into a shaded area, the lithium ion storage battery A is transmitted through a discharge regulator a, a lithium ion storage battery B is transmitted through a discharge regulator B and a lithium ion storage battery C through a discharge regulator C, the power is transmitted to a distributor through a power manager after being connected to the grid and is distributed to an electronic load in a 2.6kW 3 mode, after the power is converted into the power of a high-voltage stabilized power supply, the power is transmitted to the distributor through the power manager and is distributed to the electronic load in a 2.6kW 3 mode, and a power supply system is powered off;
3.6 setting the high-low temperature box at a certain temperature until the temperatures of the lithium ion storage battery pack A and the lithium ion storage battery pack B are balanced;
3.7 the power system is powered up, each battery pack is filled according to the curve set by the charging controller, the power of the high-voltage stabilized power supply is output to the power manager, and is sent to the distributor through the power manager to be distributed to the electronic load in a 2.6kW 3 mode, when the power is converted into a shadow area, the lithium ion storage battery pack A is transmitted through the discharging regulator a, the lithium ion storage battery pack B is transmitted through the discharging regulator B and the lithium ion storage battery pack C through the discharging regulator C, and is sent to the distributor through the power manager after grid connection to be distributed to the electronic load in a 2.6kW 3 mode, and the shadow area and the illumination area are automatically circulated;
3.8 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control at a certain time before and after each circle of the image is converted into a shadow area and before and after the image is converted into an illumination area;
3.9 after a plurality of cycles, when the battery temperature is balanced, recording the time of the battery temperature balance and the battery full charge time; in a shadow area, a lithium ion storage battery A is transmitted through a discharge regulator a, a lithium ion storage battery B is transmitted through a discharge regulator B and a lithium ion storage battery C through a discharge regulator C, the power is transmitted to a distributor through a power manager after being connected to the grid and distributed to an electronic load in a 2.6kW 3 mode, the power converted into a high-voltage stabilized power supply is output to the power manager and then transmitted to the distributor through the power manager to be distributed to the electronic load in a 2.6kW 3 mode, and a power supply system is powered off;
3.10 setting a certain temperature in the high-low temperature box until the temperature of the lithium ion storage battery A and the temperature of the lithium ion storage battery B are balanced;
3.11 the power system is powered on, each battery pack is fully charged according to the curve set by the charging controller, the power of the high-voltage stabilized power supply is sent to the distributor through the power manager to be distributed to an electronic load 2.6kW 3 mode, when the power is converted into a shadow area, the lithium ion battery pack A is transmitted through the discharge regulator a, the lithium ion battery pack B is transmitted through the discharge regulator B and the lithium ion battery pack C through the discharge regulator C, and after the grid connection, the power is sent to the distributor through the power manager to be distributed to an electronic load 2.6kW 3 mode, automatic circulation is carried out on the shadow area and the illumination area, relevant parameters are recorded, and the battery temperature and the battery full charge starting control point parameters are observed;
3.12 recording the voltage, the charging and discharging current, the battery temperature, the voltage of a battery start control point and the time of battery start control in a certain time before and after each circle is converted into a shadow area and an illumination area;
3.13 after a plurality of cycles, when the battery temperature is balanced, recording the time of the battery temperature balance and the battery full charge time; when the power is converted into a shadow area, the lithium ion storage battery A is transmitted through a discharge regulator a, the lithium ion storage battery B is transmitted through a discharge regulator B, and the lithium ion storage battery C is transmitted through a discharge regulator C, after grid connection, the power is transmitted to a distributor through a power manager and distributed to an electronic load in a 2.6kW 3 mode, the power converted into the high-voltage stabilized power supply is transmitted to the power manager, then the power is transmitted to the distributor through the power manager and distributed to the electronic load in a 2.6kW 3 mode, a power supply system is powered off, and the high-low temperature box is shut down;
3.14 after the test is finished, exporting the data, and utilizing a ground simulation system to make a corresponding curve to evaluate the working capacity of the power supply system under different temperature differences and the correctness and effectiveness of corresponding charging control measures;
a ground simulation comparison test system of a power supply system comprises the power supply system, 1553 bus equipment, a system console, a solar array simulator, a high-voltage stabilized power supply, an electronic load, a distributor, a high-low temperature box, a data acquisition instrument and a balance processor,
the power supply system comprises a storage battery pack, a bus voltage regulating unit and a storage battery charging control unit, wherein the storage battery pack comprises a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C; the bus voltage regulating unit comprises a shunt regulator, a power manager, a discharge regulator and a system controller; the storage battery charging control unit comprises a charging controller;
when ground power supply is carried out firstly, the power of the high-voltage stabilized power supply is transmitted to a distributor through a power manager and distributed to an electronic load;
converting the power into an illumination area, stabilizing the voltage within a certain range by shunting and adjusting the power of a power supply array of the solar array simulator, and transmitting the power to a distributor through a power manager to distribute the power to an electronic load; a charging array of the solar array simulator charges a lithium ion storage battery pack A, a lithium ion storage battery pack B and a lithium ion storage battery pack C;
when the area is converted into a shadow area, the lithium ion storage battery A is transmitted through a discharge regulator a, the lithium ion storage battery B is transmitted through a discharge regulator B and the lithium ion storage battery C through a discharge regulator C, and the lithium ion storage battery B is transmitted to a distributor through a power manager after being connected to the power grid to be distributed to an electronic load;
the charging controller controls the charging parameters of the lithium ion battery and the setting of the starting and the stopping of the charging;
the system controller measures the running state parameters of the power supply system, performs fault diagnosis and analysis, sends the measured parameters to the system measurement and control console and 1553B bus equipment, and receives control instructions sent by the system measurement and control console and the 1553B bus equipment;
the high-low temperature box is used for simulating the temperature difference among the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
the data acquisition instrument is used for acquiring the monomer voltages of the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C;
and the equalizing processor is used for adjusting the cell voltage in the lithium ion storage battery pack.
2. The ground simulation comparison test method for the power system as claimed in claim 1, wherein: when the ground shadow mode is set, the illumination area 54min and the shadow area 37min are defined as 1 cycle.
3. The ground simulation comparison test method for the power system as claimed in claim 1, wherein: for the monomer voltage difference simulation, the specific steps are as follows:
6.1 using a battery equalization processor to regulate the voltage of the corresponding monomer of the modules of the lithium ion storage battery A, the lithium ion storage battery B and the lithium ion storage battery C:
6.2, forming a verification test system by the product and ground equipment;
6.3, the power supply system is powered up, an electronic load is set to be 2.6kW x 3, namely, the power of the high-voltage stabilized power supply is output to the power manager and is sent to the power distributor through the power manager to be distributed to the electronic load to be 2.6kW x 3;
6.4, generating a control command to the charging controller through 1553B bus equipment, and starting charging balance control of the lithium ion storage battery;
6.5, the power supply array power of the solar array simulator is converted into an illumination area, the voltage is stabilized in a certain range through a shunt regulation function, and the power supply array power is transmitted to a distributor through a power manager and distributed to an electronic load by 2.6kW × 3; a charging array of the solar array simulator charges a lithium ion storage battery group A, a lithium ion storage battery group B and a lithium ion storage battery group C, and the operation lasts for a certain time;
6.6 when the grid is converted into a shadow area, the lithium ion storage battery A is transmitted through a discharge regulator a, the lithium ion storage battery B is transmitted through a discharge regulator B and the lithium ion storage battery C is transmitted through a discharge regulator C, and the grid is connected and then is transmitted to a distributor through a power manager to be distributed to an electronic load in a 2.6kW x 3 mode, and the grid is operated for a certain time; automatically circulating the shadow area and the illumination area;
6.7 recording the voltage of the monomer in the lithium ion storage battery A, the lithium ion storage battery B and the lithium ion storage battery C in the charging and shadow region power supply state in each cycle, and observing the change trend of the monomer voltage;
6.8, after a plurality of cycles, when the power is converted into a shaded area, the lithium ion storage battery A is transmitted through a discharge regulator a, a lithium ion storage battery B is transmitted through a discharge regulator B and a lithium ion storage battery C through a discharge regulator C, the power is transmitted to a distributor through a power manager after being connected to the grid and is distributed to an electronic load in a 2.6kW 3 mode, the power converted into the high-voltage stabilized power supply is output to the power manager and is transmitted to the distributor through the power manager to be distributed to the electronic load in a 2.6kW 3 mode, a power supply system is powered off, and data collection is stopped;
6.9 after the test is finished, exporting the data, and utilizing a ground simulation system to manufacture corresponding curves to evaluate the working capacity of the power supply system under different monomer voltage differences and the correctness and effectiveness of corresponding charging control measures.
4. The ground simulation comparison test method of the power supply system according to claim 3, wherein: the method for regulating the voltage of the corresponding monomer of the modules of the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C by using the battery equalization processor comprises the following steps:
the voltage of any monomer in each module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C is increased by 100mV relative to the voltage of the rest monomers;
or the voltage of any monomer in any module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C is reduced by 100mV relative to the voltage of the rest monomers;
or the voltage of any two monomers in each module in the lithium ion storage battery pack A, the lithium ion storage battery pack B and the lithium ion storage battery pack C is increased by 100mV relative to the voltage of the other monomers.
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