CN219871700U - Voltage-adjustable battery monomer simulator - Google Patents
Voltage-adjustable battery monomer simulator Download PDFInfo
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- CN219871700U CN219871700U CN202321110455.XU CN202321110455U CN219871700U CN 219871700 U CN219871700 U CN 219871700U CN 202321110455 U CN202321110455 U CN 202321110455U CN 219871700 U CN219871700 U CN 219871700U
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- 239000000178 monomer Substances 0.000 title claims description 10
- 238000002955 isolation Methods 0.000 claims description 47
- 238000004891 communication Methods 0.000 claims description 42
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 16
- 238000004088 simulation Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Abstract
The utility model discloses a voltage-adjustable battery cell simulator, which comprises: the device comprises a main control unit MCU, a single voltage module and a single temperature module, wherein the main control unit MCU is connected with an upper computer and is used for receiving setting parameters sent by the upper computer; the output end of the main control unit is respectively connected to the single voltage module and the single temperature module and is used for controlling the single voltage module and the single temperature module to output corresponding simulated voltage temperature signals. The utility model has the advantages that: voltage and temperature signals required by BMS test can be simulated, and BMS test can be conveniently realized; the voltage and the temperature of the analog output are adjustable, and the adjustment is convenient and reliable; simple structure and strong expansibility.
Description
Technical Field
The utility model relates to the technical field of new energy batteries, in particular to a voltage-adjustable battery monomer simulator.
Background
The battery management system is used as a safety part on the new energy automobile, and repeated tests are needed to verify the reliability of the battery management system in the development process of the battery management system. In order to test the BMS, data such as voltage and temperature need to be given to the BMS according to the dynamics of the battery, if the battery is tested by using a physical battery, the cost will be high, and the battery cannot simulate the required parameters in time according to the required mode to test the BMS, so that the battery simulator needs to provide parameter data for the BMS test.
The utility model provides a battery simulation system as in patent application number 201010219073.1, which specifically discloses a battery simulation system, comprising a battery simulation device controlled by a singlechip, and further comprising: battery management system: collecting information of voltage, temperature and current output by the battery simulation device and feeding the information back to the upper computer; the upper computer: the battery simulation device is used for setting the battery simulation device, displaying the working state and output information of the battery simulation device and displaying the voltage, temperature and current information fed back by the battery management system; the battery simulation device also comprises a voltage module, a temperature module and a current module which are formed by DA chips, and the singlechip can control gating and output of the voltage module, the temperature module and the current module according to a battery parameter setting command and a switch parameter setting command of the upper computer; the upper computer, the battery management system and the battery simulation device are all connected through a CAN bus.
The BMS test device is used for realizing the BMS test in a battery simulation mode, but circuit design, circuit stability and the like of the BMS test device are simpler, stable and reliable battery signal output simulation cannot be met, and the prior art cannot simulate the voltage, temperature and other parameters required by the battery management system BMS test accurately and reliably.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides a voltage-adjustable battery cell simulator and realizes the voltage-adjustable battery simulator.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a voltage-adjustable battery cell simulator, the simulator comprising: the device comprises a main control unit MCU, a single voltage module and a single temperature module, wherein the main control unit MCU is connected with an upper computer and is used for receiving setting parameters sent by the upper computer; the output end of the main control unit is respectively connected to the single voltage module and the single temperature module and is used for controlling the single voltage module and the single temperature module to output corresponding simulated voltage temperature signals.
The main control unit MCU is connected to the upper computer through the RS485 communication module.
The simulator also comprises a power supply module, wherein the power supply module is used for converting commercial power into a power supply with corresponding voltage to supply power for each module in the simulator.
The single temperature module comprises an isolation power supply, an isolation communication module and a digital resistor, wherein the isolation power supply is used for providing isolation power for the isolation communication module and the digital resistor; the main control unit MCU is connected with the digital resistor through the isolation communication module; the digital resistor is used for outputting a signal simulating the temperature of the battery.
The isolation communication module is connected with the digital resistor through an SPI communication line.
The single voltage module comprises a DAC module, a direct current voltage regulation module and a single isolation power supply, the main control unit MCU is in communication connection with the DAC module, and the output end of the DAC module is connected to the direct current voltage regulation module; the input end of the direct current voltage regulating module is connected to the single isolation power supply, and the output end of the direct current voltage regulating module outputs a signal simulating the voltage of the battery.
The main control unit MCU is connected with the DAC module through the monomer isolation communication module.
SPI communication is adopted between the MCU and the DAC module.
The single voltage module further comprises an isolation operational amplifier, the isolation operational amplifier is used for collecting output voltage signals of the direct current voltage regulation module, and the output end of the isolation operational amplifier is connected to the input end of the main control unit MCU.
The number of the single voltage modules and the single temperature modules is one or more.
The utility model has the advantages that: voltage and temperature signals required by BMS test can be simulated, and BMS test can be conveniently realized; the voltage and the temperature of the analog output are adjustable, and the adjustment is convenient and reliable; the structure is simple, the expansibility is strong, and a plurality of output signals can be expanded according to the actual need to adapt to the test needs of different battery management systems.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic diagram of a simulator of the present utility model;
FIG. 2 is a schematic diagram of the connection relationship of the present utility model in use.
The labels in the above figures are: 100: a desktop computer; 200. 400: a voltage-adjustable battery cell simulator; 201:220V to 12V power supply module; 202. 203, 204, 205:14 power saving Chi Shanti units; 300: a battery management system; 410: a 12V to 5V module; 420: an R485 communication module; 430: an MCU;440: isolating the power supply; 450: isolating the communication module; 460. 470, 480, 490: a digital resistor; 502. 602: a DAC module; 504. 604: a direct current voltage regulating module; 505. 605: isolating the operational amplifier; 500: the 1 st section single voltage module; 600: a section 14 single voltage module; 503. 603, monomer isolated power supply; 501. 601: the communication module is isolated by a single body.
Detailed Description
The following detailed description of the utility model refers to the accompanying drawings, which illustrate preferred embodiments of the utility model in further detail.
Example 1:
the utility model mainly realizes that the voltage-adjustable battery cell simulator can simulate the output state and the charge-discharge characteristics of a real power battery and rapidly verify the functions of the battery management system in different battery states. The method specifically comprises the following functions:
a voltage-adjustable battery cell simulator, the simulator comprising: the device comprises a main control unit MCU, a single voltage module and a single temperature module; the main control unit MCU is the core of the simulator, adopts a singlechip, a DSP or a special chip with a data processing function, and can be developed by adopting STM32 series singlechips to realize the main control unit MCU for saving cost; the single voltage module is used for simulating single battery output voltage signals and providing parameters for BMS test; the single temperature module is used for simulating the single battery output temperature signal.
The master control unit MCU is connected to the upper computer through the RS485 communication module, and the upper computer is used for sending control signals to the master control unit, including starting, setting output voltage and setting output temperature signal lamps; the upper computer can be realized by a desktop computer or a PC computer, and the main control unit MCU is used for receiving setting parameters sent by the upper computer;
the output end of the main control unit is respectively connected to the single voltage module and the single temperature module and is used for controlling the single voltage module and the single temperature module to output corresponding simulated voltage temperature signals. The MCU receives the setting signals of the upper computer and then controls the voltage modules and the temperature signals corresponding to the analog output corresponding to the single voltage modules and the single temperature modules according to the setting signals, so that the voltage signals and the temperature signals are input into the BMS to realize the test of the BMS.
The single voltage module and the single temperature module are mainly used for outputting corresponding voltage and temperature signals, and the BMS is used for monitoring the battery pack or the power battery, so that one signal is not monitored, the number of the single voltage module and the single temperature module can be set according to the actual requirement of the BMS, and the number of the single voltage module and the single temperature module can be one or more, and the single voltage module and the single temperature module can be set according to the actual requirement.
The battery simulator provided by the utility model is powered by the power supply module, and the power supply module is used for converting commercial power into a power supply with corresponding voltage to power each module in the simulator. The power module comprises a 220V-to-12V power module (alternating current-to-direct current module) and a 5V-to-5V module (DCDC module), and the 5V direct current formed by the 220V-to-12V power module can supply power for the MCU and the RS485 communication module.
The single temperature module comprises an isolation power supply, an isolation communication module and a digital resistor, wherein the isolation power supply is used for providing isolation power for the isolation communication module and the digital resistor; the 12V power output by the 220V-to-12V power module is input to the input end of the isolation power, the output end of the isolation power outputs the corresponding power supply with required voltage to the digital resistor and isolation communication module, the main control unit MCU is connected with the digital resistor through the isolation communication module and used for controlling the output of the digital resistor, and the digital resistor is used for outputting signals simulating the temperature of the battery.
And on the communication connection, the isolation communication module is connected with the digital resistor through an SPI communication line. When in control, the MCU outputs a control signal to the digital resistor through the isolation communication module, the digital resistor outputs an electric signal corresponding to the analog temperature, and the output end of the digital resistor is connected to the BMS when in use.
The single voltage module comprises a DAC module, a direct current voltage regulation module and a single isolation power supply, the MCU is in communication connection with the DAC module, and the output end of the DAC module is connected to the direct current voltage regulation module; the input end of the direct current voltage regulating module is connected to the single isolation power supply, and the output end of the direct current voltage regulating module outputs a signal simulating the voltage of the battery. The main control unit MCU is connected with the DAC module through the monomer isolation communication module. SPI communication is adopted between the MCU and the DAC module. The isolation operational amplifier is used for collecting output voltage signals of the direct current voltage regulating module, and the output end of the isolation operational amplifier is connected to the input end of the main control unit MCU.
The input end of the single isolation power supply is connected to a 220V-to-12V module, and the 12V power supply is converted into corresponding voltage and then supplies power to the direct current voltage regulation module; when the battery cell voltage regulating module is used, the MCU outputs a control signal, which is converted into an analog signal through the DAC module after passing through the single isolation communication module, so as to control the direct current voltage regulating module to output a corresponding voltage signal to simulate the output voltage of the battery cell, and when the battery cell voltage regulating module is used, the output end of the direct current voltage regulating module is connected with the BMS; in order to realize more accurate and stable output voltage, the utility model adopts the operational amplifier to collect the output voltage signal into the MCU, and the MCU can control the stability of the output voltage of the direct current voltage regulating module according to a PID control mode. The direct current voltage regulating module can be realized by a voltage adjustable linear power supply chip.
As shown in fig. 2, when the BMS test is performed using the simulator, the input terminal of the 220V to 12V module of the simulator is connected to AC220V; connecting an RS485 interface to an upper computer; and then the temperature output port and the voltage output port of the simulator are respectively connected to the temperature acquisition port and the voltage acquisition port corresponding to the BMS, so that the BMS is tested.
Example 2:
the embodiment specifically limits the number of the single voltage modules and the single temperature modules based on the embodiment 1, and realizes the signal simulation of the single voltage of the 54-battery cell and the single temperature of the 16-battery cell.
As shown in fig. 1 and 2, the simulator mainly comprises a 220V-to-12V power module and four 14-battery cell units, and the signal simulation of the cell voltage of the 56-battery cell and the cell temperature of the 16-battery cell is completed.
The 220V-to-12V power supply module is connected with the commercial power through the socket, 220V alternating current of the commercial power is converted into 12V direct current, and the 12V direct current supplies power for the 14-battery single unit. According to the utility model, information interaction is carried out between the battery management system to be tested and the desktop computer through RS485, and the battery management system to be tested is connected with the external wiring harness through the connector and the external wiring harness, so that voltage and temperature analog signals are sent to the battery management system to be tested.
The 14-section battery monomer unit is composed of a 12V-to-5V module, an R485 communication module, an MCU, a 4-section monomer temperature module and 14 monomer voltage modules respectively. The 12V-to-5V module converts the 12V voltage into the 5V voltage for providing power for the R485 communication module and the MCU module. The R485 communication module is a physical interface, and the data transmission communication between the desktop upper computer and the MCU is realized through the interface. The MCU is a system control unit, receives battery state information which is transmitted by the desktop computer and needs to be simulated through the R485 control module, and transmits the battery state information to the single voltage module and the single temperature module through the SPI communication interface respectively.
The 14 single voltage modules complete the simulation of the voltage signals of the 14 battery units, and the 14 single voltage modules realize the electric isolation between each single voltage module and other modules through the isolation power supply and the isolation communication module. The DAC module converts the digital signal sent by the MCU into a voltage analog signal, and forms a voltage regulating circuit with the direct current voltage regulating module, so that the single voltage is adjustable between 1.5V and 4.5V.
The simulation of the single temperature signals of the 4 batteries is completed by the 1 single temperature module, and the single temperature module is electrically isolated from the single voltage module and other modules through the experiment of the isolated power supply and the isolated communication module. The digital resistor converts the digital signal sent by the MCU into a resistor analog signal, and the temperature simulation of the battery cell is realized through the resistor signal.
It is obvious that the specific implementation of the present utility model is not limited by the above-mentioned modes, and that it is within the scope of protection of the present utility model only to adopt various insubstantial modifications made by the method conception and technical scheme of the present utility model.
Claims (10)
1. A voltage-adjustable battery cell simulator is characterized in that: the simulator comprises: the device comprises a main control unit MCU, a single voltage module and a single temperature module, wherein the main control unit MCU is connected with an upper computer and is used for receiving setting parameters sent by the upper computer; the output end of the main control unit is respectively connected to the single voltage module and the single temperature module and is used for controlling the single voltage module and the single temperature module to output corresponding simulated voltage temperature signals.
2. A voltage adjustable cell simulator as defined in claim 1, wherein: the main control unit MCU is connected to the upper computer through the RS485 communication module.
3. The voltage-adjustable battery cell simulator of claim 1, wherein: the simulator also comprises a power supply module, wherein the power supply module is used for converting commercial power into a power supply with corresponding voltage to supply power for each module in the simulator.
4. The voltage-adjustable battery cell simulator of claim 1, wherein: the single temperature module comprises an isolation power supply, an isolation communication module and a digital resistor, wherein the isolation power supply is used for providing isolation power for the isolation communication module and the digital resistor; the main control unit MCU is connected with the digital resistor through the isolation communication module; the digital resistor is used for outputting a signal simulating the temperature of the battery.
5. The voltage-adjustable battery cell simulator of claim 4, wherein: the isolation communication module is connected with the digital resistor through an SPI communication line.
6. The voltage-adjustable battery cell simulator of claim 1, wherein: the single voltage module comprises a DAC module, a direct current voltage regulation module and a single isolation power supply, the main control unit MCU is in communication connection with the DAC module, and the output end of the DAC module is connected to the direct current voltage regulation module; the input end of the direct current voltage regulating module is connected to the single isolation power supply, and the output end of the direct current voltage regulating module outputs a signal simulating the voltage of the battery.
7. The voltage-adjustable battery cell simulator of claim 6, wherein: the main control unit MCU is connected with the DAC module through the monomer isolation communication module.
8. The voltage-adjustable battery cell simulator of claim 6, wherein: SPI communication is adopted between the MCU and the DAC module.
9. The voltage-adjustable battery cell simulator of claim 6, wherein: the single voltage module further comprises an isolation operational amplifier, the isolation operational amplifier is used for collecting output voltage signals of the direct current voltage regulation module, and the output end of the isolation operational amplifier is connected to the input end of the main control unit MCU.
10. The voltage-adjustable battery cell simulator of any of claims 1-9, wherein: the number of the single voltage modules and the single temperature modules is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321110455.XU CN219871700U (en) | 2023-05-10 | 2023-05-10 | Voltage-adjustable battery monomer simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321110455.XU CN219871700U (en) | 2023-05-10 | 2023-05-10 | Voltage-adjustable battery monomer simulator |
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| Publication Number | Publication Date |
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| CN219871700U true CN219871700U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321110455.XU Active CN219871700U (en) | 2023-05-10 | 2023-05-10 | Voltage-adjustable battery monomer simulator |
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| CN (1) | CN219871700U (en) |
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- 2023-05-10 CN CN202321110455.XU patent/CN219871700U/en active Active
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