CN205786892U - Electrokinetic cell simulator - Google Patents
Electrokinetic cell simulator Download PDFInfo
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- CN205786892U CN205786892U CN201620465351.4U CN201620465351U CN205786892U CN 205786892 U CN205786892 U CN 205786892U CN 201620465351 U CN201620465351 U CN 201620465351U CN 205786892 U CN205786892 U CN 205786892U
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Abstract
The utility model discloses a kind of electrokinetic cell simulator, including arithmetic center, current/voltage testing circuit, controllable electric power and balance simulation circuit.Arithmetic center calculates output control signals to controllable electric power according to equivalent model and the duty of electrokinetic cell, control the voltage and current etc. that controllable electric power simulation electrokinetic cell output is suitable, also by current/voltage testing circuit voltage and current data it is collected while controllable electric power simulation output and feeds back to arithmetic center, arithmetic center can dynamically adjust according to service condition and duty and output signal to controllable electric power, this practicality can simulate the various duties of electrokinetic cell completely, including accurately simulating the dump energy of electrokinetic cell and corresponding output voltage, charging simulation and balance simulation etc., the use needs of BMS system test can be met.
Description
Technical field
This utility model relates to a kind of simulator for simulating electrokinetic cell.
Background technology
Electrokinetic cell is widely applied on electric automobile.Electrokinetic cell in use to meet the use demands such as lasting heavy-current discharge and quick charge, and lithium battery group is as the main application of electrokinetic cell at present, characteristic due to lithium battery, in use need to utilize BMS system lithium battery is reasonably managed and safeguards, otherwise affecting the safety of lithium battery group, efficiency, cycle life etc., therefore the design of BMS system is most important to electrokinetic cell.The design process of BMS system needing BMS system is tested, if directly using electrokinetic cell to carry out test may require that input substantial contribution buys electrokinetic cell, and due to the individual variation of electrokinetic cell, the effect of BMS system test can be directly influenced.
Summary of the invention
The purpose of this utility model is just to provide a kind of electrokinetic cell simulator, it is possible to BMS system is effectively tested by the various duties of simulation electrokinetic cell.
This utility model is realized in that above-mentioned purpose:
Electrokinetic cell simulator, including arithmetic center, current/voltage testing circuit, controllable electric power and balance simulation circuit；Controllable electric power is provided with power input, power output end and controls input, power input is connected with power supply, power output end is power output end and the balance simulation input of electrokinetic cell simulator, controls input I/O port corresponding to arithmetic center and is connected；Current/voltage testing circuit is serially connected with the power output end of controllable electric power, and the data output end I/O port corresponding to arithmetic center of current/voltage detection connects；The corresponding I/O port controlling input concatenation operation center of balance simulation circuit, the outfan of balance simulation circuit is also connected with the power output end of controllable electric power.
Wherein, described controllable electric power includes switching power circuit and linear power source circuit, and switching power circuit is connected with linear power source circuit；Linear power source circuit is provided with control input；The input that power supply access port is switching power circuit of controllable electric power；The power output end of controllable electric power is the outfan of linear power source circuit.
Wherein, being provided with feedback circuit in controllable electric power, the input of feedback circuit connects the outfan of linear power source circuit, the feedback input end of the outfan connecting valve power circuit of feedback circuit.
Wherein, communication isolation circuit and D/A converting circuit also it are serially connected with between corresponding I/O port and the control input of described arithmetic center.
Wherein, described current/voltage testing circuit includes current sampling resistor, voltage sample resistance and analog to digital conversion circuit.
Wherein, arithmetic center is provided with the memorizer for storing operational parameter.
The beneficial effects of the utility model are: arithmetic center calculates output control signals to controllable electric power according to equivalent model and the duty of electrokinetic cell, control the voltage and current etc. that controllable electric power simulation electrokinetic cell output is suitable, also by current/voltage testing circuit voltage and current data it is collected while controllable electric power simulation output and feeds back to arithmetic center, arithmetic center can dynamically adjust according to service condition and duty and output signal to controllable electric power, this practicality can simulate the various duties of electrokinetic cell completely, including accurately simulating the dump energy of electrokinetic cell and corresponding output voltage, charging simulation and balance simulation etc., the use needs of BMS system test can be met.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is schematic block circuit diagram of the present utility model.
Detailed description of the invention
With reference to Fig. 1, electrokinetic cell simulator, including arithmetic center, current/voltage testing circuit, controllable electric power and balance simulation circuit；Controllable electric power is provided with power input, power output end and controls input, power input is connected with power supply, power output end is power output end and the balance simulation input of electrokinetic cell simulator, controls input I/O port corresponding to arithmetic center and is connected；Current/voltage testing circuit is serially connected with the power output end of controllable electric power, and the data output end I/O port corresponding to arithmetic center of current/voltage detection connects；The corresponding I/O port controlling input concatenation operation center of balance simulation circuit, the outfan of balance simulation circuit is also connected with the power output end of controllable electric power.Arithmetic center calculates output control signals to controllable electric power according to equivalent model and the duty of electrokinetic cell, control the voltage and current etc. that controllable electric power simulation electrokinetic cell output is suitable, also by current/voltage testing circuit voltage and current data it is collected while controllable electric power simulation output and feeds back to arithmetic center, arithmetic center can dynamically adjust according to service condition and duty and output signal to controllable electric power, this practicality can simulate the various duties of electrokinetic cell completely, including accurately simulating the dump energy of electrokinetic cell and corresponding output voltage, charging simulation and balance simulation etc., the use needs of BMS system test can be met.
Wherein controllable electric power includes switching power circuit and linear power source circuit, and switching power circuit is connected with linear power source circuit；Linear power source circuit is provided with control input；The input that power supply access port is switching power circuit of controllable electric power；The power output end of controllable electric power is the outfan of linear power source circuit.Switching Power Supply can provide stable voltage and current to export, it is contemplated that the output of Switching Power Supply can produce the ripple of high frequency, exports with the voltage x current of electrokinetic cell and there are differences and affect the precision of simulation.And the voltage that linear power source circuit is exported and electric current output actual with electrokinetic cell are sufficiently close to, it is particularly suitable as simulating the out-put supply of electrokinetic cell.Switching Power Supply concatenation linear power supply, it is possible to providing stable input voltage and electric current for linear power supply, the input and output voltage that simultaneously can also reduce linear power source circuit is poor, to improve the work efficiency of linear power source circuit.
Owing to the output voltage of linear power source circuit is that the dump energy according to simulated battery calculates center calculation acquisition by partite transport, therefore along with the minimizing of dump energy during electric discharge, the output voltage of linear power source circuit reduces, and during reverse charged, dump energy increases, and output voltage increases the most accordingly.In order to adapt to the above-mentioned use needs of linear power source circuit, being provided with feedback circuit in controllable electric power, the input of feedback circuit connects the outfan of linear power source circuit, the feedback input end of the outfan connecting valve power circuit of feedback circuit.Switching power circuit can be according to the voltage of outfan phase of adjustment of the signal of feedback circuit, and when linear power source circuit output voltage reduces, the output voltage of switching power circuit also reduces；When linear power source circuit output voltage raises, the output voltage of switching power circuit also raises.The input and output voltage that so can reduce linear power source circuit further is poor, improves the work efficiency of linear power source circuit.
Wherein, communication isolation circuit and D/A converting circuit also it are serially connected with between corresponding I/O port and the control input of arithmetic center.Communication isolation circuit can reduce the signal logarithmic mode change-over circuit of arithmetic center and produce interference, thus improves the operating accuracy of D/A converting circuit.The digital controlled signal that D/A converting circuit comes according to arithmetic center transmission is converted to analogue signal, then is input to the control input of linear power source circuit so that linear power source circuit is according to the corresponding voltage of this analog signal output.
Current/voltage testing circuit includes current sampling resistor, voltage sample resistance and analog to digital conversion circuit.Analog to digital conversion circuit is provided with multiple analogue signal input collection terminal, is respectively used to gather the data such as the output voltage of power output end and electric current.
Outputing control signals to controllable electric power in order to the accurate equivalent model according to electrokinetic cell and duty calculate, arithmetic center is provided with the memorizer for storing operational parameter.Storage wherein storage has the relevant parameter of battery equivalent model, such as equivalent resistance, equivalent capacitance value, initial capacity and the dump energy etc. of electrokinetic cell three rank resistance-capacitance network model.
The balance simulation circuit of this electrokinetic cell simulator can also simulate the situation of electrokinetic cell equilibrium, need to close the output of controllable electric power when balance simulation, electrokinetic cell simulator from other electrokinetic cell simulator input voltage and input current, and can utilize current/voltage testing circuit equalizing voltage and curent change and update the dump energy parameter of memorizer in this electrokinetic cell simulator simultaneously.
Claims (6)
1. electrokinetic cell simulator, it is characterised in that: include arithmetic center, current/voltage testing circuit, controllable electric power and balance simulation circuit；Controllable electric power is provided with power input, power output end and controls input, power input is connected with power supply, power output end is power output end and the balance simulation input of electrokinetic cell simulator, controls input I/O port corresponding to arithmetic center and is connected；Current/voltage testing circuit is serially connected with the power output end of controllable electric power, and the data output end I/O port corresponding to arithmetic center of current/voltage detection connects；The corresponding I/O port controlling input concatenation operation center of balance simulation circuit, the outfan of balance simulation circuit is also connected with the power output end of controllable electric power.
Electrokinetic cell simulator the most according to claim 1, it is characterised in that: described controllable electric power includes switching power circuit and linear power source circuit, and switching power circuit is connected with linear power source circuit；Linear power source circuit is provided with control input；The input that power supply access port is switching power circuit of controllable electric power；The power output end of controllable electric power is the outfan of linear power source circuit.
Electrokinetic cell simulator the most according to claim 2, it is characterised in that: being provided with feedback circuit in controllable electric power, the input of feedback circuit connects the outfan of linear power source circuit, the feedback input end of the outfan connecting valve power circuit of feedback circuit.
Electrokinetic cell simulator the most according to claim 1 and 2, it is characterised in that: also it is serially connected with communication isolation circuit and D/A converting circuit between corresponding I/O port and the control input of described arithmetic center.
Electrokinetic cell simulator the most according to claim 1, it is characterised in that: described current/voltage testing circuit includes current sampling resistor, voltage sample resistance and analog to digital conversion circuit.
Electrokinetic cell simulator the most according to claim 1, it is characterised in that: arithmetic center is provided with the memorizer for storing operational parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465351.4U CN205786892U (en) | 2016-05-20 | 2016-05-20 | Electrokinetic cell simulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620465351.4U CN205786892U (en) | 2016-05-20 | 2016-05-20 | Electrokinetic cell simulator |
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| CN205786892U true CN205786892U (en) | 2016-12-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479604A (en) * | 2017-07-24 | 2017-12-15 | 安徽力高新能源技术有限公司 | A kind of high precision closed loop feedback analog battery system |
| CN109683096A (en) * | 2018-12-17 | 2019-04-26 | 珠海格力电器股份有限公司 | Battery management system function test system and test method |
-
2016
- 2016-05-20 CN CN201620465351.4U patent/CN205786892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479604A (en) * | 2017-07-24 | 2017-12-15 | 安徽力高新能源技术有限公司 | A kind of high precision closed loop feedback analog battery system |
| CN109683096A (en) * | 2018-12-17 | 2019-04-26 | 珠海格力电器股份有限公司 | Battery management system function test system and test method |
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