CN209417257U - Simulated battery system - Google Patents
Simulated battery system Download PDFInfo
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- CN209417257U CN209417257U CN201822139642.6U CN201822139642U CN209417257U CN 209417257 U CN209417257 U CN 209417257U CN 201822139642 U CN201822139642 U CN 201822139642U CN 209417257 U CN209417257 U CN 209417257U
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Abstract
The utility model discloses a kind of simulated battery systems, it include: voltage generation circuit, the voltage generation circuit includes control module, D/A converter module, Voltage stabilizing module and feedback module, the control module output voltage preset signals give the D/A converter module, voltage preset signals are converted analog voltage by the D/A converter module, the analog voltage of the Voltage stabilizing module logarithmic mode conversion module output carries out pressure stabilizing, analog voltage after exporting pressure stabilizing, the feedback module receives the analog voltage after pressure stabilizing, is fed back to control module；Analog voltage after the pressure stabilizing of the Voltage stabilizing module output is the output voltage of simulated battery system；The control module adjusts the output voltage of simulated battery system according to the output voltage values and voltage preset signals of simulated battery system, so that the output voltage values of simulated battery system level off to voltage preset signals.The utility model improves the precision and resolution ratio of simulated battery system output voltage.
Description
Technical field
The utility model relates to battery management system technical fields, more specifically, being related to a kind of simulated battery system.
Background technique
When using actual battery group, since the voltage of battery pack itself is uncontrollable, actual battery group supplying power for outside mistake
Cheng Zhong, externally electric discharge or self discharge parameter are inconsistent, and the voltage that long-time service will cause all circles' battery is inconsistent, cause every section
Battery capacity is unbalanced.Since true battery pack needs to charge, it is poor that the service condition and reason itself of each batteries group exist
It is different, it is easier to make to charge so unbalanced, is easily damaged battery.Needing the testing field using battery, such as balance module
Detection etc., true battery be obviously it is inappropriate, the reason of actual battery itself, may cause the deviation of test result,
Therefore this scene generally uses simulated battery to realize identical function, when simulated battery can effectively reduce test
Between, the test result of repeatability is provided and creates the test environment of a safety, while passing through test battery temperature and aging
Test, can reduce time, avoid the factors such as the fault of operator and the deviation of result.
Existing technology utilizes the output of process control simulated battery, to obtain simulated battery, but the prior art is simulated
Battery there are output voltage precision it is lower, resolution ratio is lower and does not detect to the electric current of simulated battery the problems such as.
Utility model content
In view of this, the utility model proposes a kind of voltage accuracy height, the analogsimulation battery system of high resolution is used for
The prior art is solved there are simulated battery output voltage precision is lower, resolution ratio is lower, and not to the electric current of simulated battery into
The problem of row detection.
The utility model provides a kind of simulated battery system, comprising: voltage generation circuit, the voltage generation circuit packet
Control module, D/A converter module, Voltage stabilizing module and feedback module are included, the control module output voltage preset signals are to described
Voltage preset signals are converted analog voltage, the Voltage stabilizing module logarithmic mode by D/A converter module, the D/A converter module
The analog voltage of conversion module output carries out pressure stabilizing, the analog voltage after exporting pressure stabilizing, after the feedback module receives pressure stabilizing
Analog voltage is fed back to control module；Analog voltage after the pressure stabilizing of the Voltage stabilizing module output is simulated battery system
Output voltage；
The control module adjusts simulated battery system according to the output voltage values and voltage preset signals of simulated battery system
The output voltage of system, so that the output voltage values of simulated battery system level off to voltage preset signals.
Optionally, when the output voltage values of simulated battery system are bigger than voltage preset signals, the control module control
So that the output voltage of simulated battery system becomes smaller；When the output voltage values of simulated battery system are smaller than voltage preset signals,
The control module control is so that the output voltage of simulated battery system becomes larger；Until the output voltage of simulated battery system approaches
In voltage preset signals.
Optionally, the simulated battery system further includes upper computer module, the upper computer module link control module, complete
The long-range control of pairs of simulated battery system.
Optionally, the simulated battery system further includes current detection circuit, the voltage generation circuit connection load electricity
Road, the current detection circuit are connected between load circuit and voltage generation circuit, and the current detection circuit includes shunting
Device and photoswitch pipe, the working condition for turning on and off control current divider of the photoswitch pipe, described in control module control
When photoswitch pipe is opened, the current divider is detected to by the electric current of load circuit, obtains the output of simulated battery system
Electric current.
Optionally, the current divider includes first resistor and voltage detecting circuit, the first resistor and photoswitch pipe group
It is connected between voltage generation circuit and load circuit at cascaded structure, the voltage detecting circuit and the cascaded structure are simultaneously
Connection, when photoswitch pipe is opened, the voltage detecting circuit obtains simulated battery system by detecting the voltage of first resistor
Output electric current.
Optionally, the current detection circuit further includes second resistance, and the resistance value of the second resistance is greater than first resistor
Resistance value, the second resistance and the voltage detecting circuit are in parallel, and when photoswitch pipe disconnects, the voltage detecting circuit is logical
The voltage of detection second resistance is crossed to detect whether simulated battery leaks electricity.
Optionally, it is connected between host computer and control module by RS-232 or CAN bus.
Optionally, the feedback module is connected with control module by Serial Peripheral Interface (SPI).
Optionally, the simulated battery system further includes power supply module, and the power supply module is to control module, digital-to-analogue conversion
Module, constant pressure module, feedback module and current sampling module are powered.
Compared with prior art, the technical solution of the utility model has the advantage that the utility model passes through feedback mould
The output voltage values of simulated battery system are fed back to control module by block, and control module is according to the output voltage of simulated battery system
Value and voltage preset signals adjust the output voltage of simulated battery system, so that the output voltage values of simulated battery system approach
In voltage preset signals, sampling calibration constantly is carried out to the output voltage of simulated battery system, ensure that by negative feedback control
The precision of the output voltage of simulated battery system is higher.Meanwhile the utility model further includes having current detection circuit, measurement simulation
The output electric current of battery system carries out current measurement to the occasion for needing to measure simulated battery system output current.This is practical new
Type delicate structure, the voltage of simulated battery system can be changed in a certain range arbitrary value by process control, therefore be stepless-adjustment
Control, can satisfy multiple testing requirements, while improving the precision and resolution ratio of simulated battery system output voltage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model simulated battery system；
Fig. 2 is the schematic diagram of the utility model current detection circuit.
Specific embodiment
It is described in detail below in conjunction with preferred embodiment of the attached drawing to the utility model, but the utility model is not merely
It is limited to these embodiments.The utility model covers any substitution made in the spirit and scope of the utility model, modification, equivalent
Method and scheme.
In order to make the public have thorough understanding to the utility model, in following the preferred embodiment in the utility model specifically
Concrete details is illustrated, and that this can also be understood completely is practical new for description without these details for a person skilled in the art
Type.
The utility model is more specifically described by way of example referring to attached drawing in the following passage.It should be noted that attached drawing
It is all made of more simplified form and uses non-accurate ratio, only to facilitate, lucidly aid in illustrating the utility model
The purpose of embodiment.
As shown in Figure 1, the utility model provides a kind of simulated battery system, comprising: voltage generation circuit, the voltage
Generation circuit includes control module, D/A converter module, Voltage stabilizing module and feedback module, and the control module output voltage is default
Signal gives the D/A converter module, and voltage preset signals are converted analog voltage, the pressure stabilizing by the D/A converter module
The analog voltage of module logarithmic mode conversion module output carries out pressure stabilizing, and the analog voltage after exporting pressure stabilizing, the feedback module connects
Analog voltage after receiving pressure stabilizing, is fed back to control module；Analog voltage after the pressure stabilizing of the Voltage stabilizing module output is mould
The output voltage of quasi- battery system.The feedback module and control module are connected by Serial Peripheral Interface (SPI) (SPI), the control
Module and D/A converter module pass through I2The connection of C bus.The simulated battery system further includes current detection circuit, the electric current
Detection circuit link control module, the control module control current detection circuit carry out the battery of simulated battery output system
Measurement.The output electric current I1 of the current detection circuit and the output voltage V1 of voltage generation circuit are reported to control module,
To read the output voltage and output electric current of present day analog electrical voltage system.
The simulated battery system further includes upper computer module, the upper computer module link control module, receives control
Circuit reports information, and the output voltage including analog voltage system and output electric current are simultaneously emitted by control instruction, complete to mould
The long-range control of quasi- battery system.It is connected between host computer and control module by RS-232 or CAN bus.
The simulated battery system further includes power supply module (not being presented in Fig. 1), the power supply module to control module,
D/A converter module, constant pressure module, feedback module and current sampling module are powered.
The control module adjusts simulated battery system according to the output voltage values and voltage preset signals of simulated battery system
The output voltage of system, so that the output voltage of simulated battery system levels off to voltage preset signals.Specifically, working as simulated battery system
When the output voltage values of system are bigger than voltage preset signals, the control module control is so that the output voltage of simulated battery system becomes
It is small；When the output voltage values of simulated battery system are smaller than voltage preset signals, the control module control is so that simulated battery
The output voltage of system becomes larger；Until the output voltage of simulated battery system levels off to voltage preset signals.
When the step-length that the output voltage that voltage preset signals are less than simulated battery system is adjusted, then adjusting needs simulated battery
The output voltage of system, so that the difference of the output voltage values of simulated battery system and voltage preset signals is in first threshold.
Simulated battery system output voltage uses the mode of B0505LS-1WR2+ADR4533 (25/40), guarantees in this way
It is not influenced by low-voltage power supply system when multi-pass trace-stacking, the high pressure of demand can be generated, the output voltage of 4096mV can be accomplished to be less than
The precision of 1mV (precision of 2.5V and 3.3V are less than 500uV).The control module of the utility model is single-chip microprocessor MCU, and MCU is selected
STM32F103VET6.D/A converter module uses AD5693, has high relative accuracy, maximum ± 2LSB.Voltage stabilizing module uses
LT1636 carries out pressure stabilizing to the analog voltage of output.Feedback module uses LTC6811, samples the output electricity of simulated battery system
Or else pressure feedback is broken into MCU is calibrated, until identical as the voltage of input, sampling precision 0.2mv.Power supply module uses TI
LM46002, main to consider that there is power supply in actual use is mainly 12V system and 24V system, whole supply district should
For 6V~40V, biggish output power is needed.
As described in Figure 2, the specific schematic diagram of current detection circuit is given.Simulated battery system further includes current detecting electricity
Road, the voltage generation circuit connect load circuit, and the current detection circuit is connected to load circuit and voltage generation circuit
Between, the current detection circuit includes current divider and photoswitch pipe photoMOS, and the photoswitch pipe photoMOS's is open-minded
With the working condition of shutdown control current divider, when control module, which controls the photoswitch pipe, to be opened, the current divider is to passing through
The electric current of load circuit is detected, and the output electric current of simulated battery system is obtained.The current divider include first resistor R1 and
Voltage detecting circuit, the first resistor R1 and photoswitch pipe photoMOS composition cascaded structure be connected on voltage generation circuit and
Between load circuit, the voltage detecting circuit and the tandem construction parallel are described when photoswitch pipe photoMOS is opened
Voltage detecting circuit obtains the output electric current of simulated battery system by detecting the voltage of first resistor R1.
The current detection circuit further includes second resistance R2, and the second resistance R2 and the voltage detecting circuit are simultaneously
Connection, when photoswitch pipe disconnects, the voltage detecting circuit is to detect simulated battery by detecting the voltage of second resistance R2
No electric leakage.When being greater than a certain threshold value with the presence of electric current in electric current or circuit in voltage detecting circuit detection circuit, then illustrate mould
Quasi- battery leaks electricity.
Wherein, more much smaller than operating current due to leakage current, therefore the resistance value of second resistance R2 is greater than first resistor R1's
Resistance value, the electric current that second resistance R2 can detecte is smaller, so as to detect the leakage current in circuit.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (9)
1. a kind of simulated battery system characterized by comprising voltage generation circuit, the voltage generation circuit include control
Module, D/A converter module, Voltage stabilizing module and feedback module, the control module output voltage preset signals turn to the digital-to-analogue
Block is changed the mold, voltage preset signals are converted analog voltage, the Voltage stabilizing module logarithmic mode modulus of conversion by the D/A converter module
The analog voltage of block output carries out pressure stabilizing, the analog voltage after exporting pressure stabilizing, and the feedback module receives the simulation electricity after pressure stabilizing
Pressure, is fed back to control module；Analog voltage after the pressure stabilizing of the Voltage stabilizing module output is the output of simulated battery system
Voltage:
The control module adjusts simulated battery system according to the output voltage values and voltage preset signals of simulated battery system
Output voltage, so that the output voltage values of simulated battery system level off to voltage preset signals.
2. simulated battery system according to claim 1, it is characterised in that: when the output voltage values ratio of simulated battery system
When voltage preset signals are big, the output voltage of the control module control simulated battery system becomes smaller；When simulated battery system
Output voltage values become larger than voltage preset signals hour, the output voltage of the control module control simulated battery system；Until
The output voltage of simulated battery system levels off to voltage preset signals.
3. simulated battery system according to claim 2, it is characterised in that: the simulated battery system further includes host computer
Module, the upper computer module link control module complete the long-range control to simulated battery system.
4. simulated battery system according to claim 1, it is characterised in that: the simulated battery system further includes electric current inspection
Slowdown monitoring circuit, the voltage generation circuit connect load circuit, and the current detection circuit is connected to load circuit and voltage generates
Between circuit, the current detection circuit includes current divider and photoswitch pipe, and the photoswitch pipe turns on and off control point
The working condition for flowing device, when control module, which controls the photoswitch pipe, to be opened, the current divider is to the electricity by load circuit
Stream is detected, and the output electric current of simulated battery system is obtained.
5. simulated battery system according to claim 4, it is characterised in that: the current divider includes first resistor and voltage
Detection circuit, the first resistor and photoswitch pipe composition cascaded structure are connected between voltage generation circuit and load circuit,
The voltage detecting circuit and the tandem construction parallel, when photoswitch pipe is opened, the voltage detecting circuit passes through detection
The voltage of first resistor obtains the output electric current of simulated battery system.
6. simulated battery system according to claim 5, it is characterised in that: the current detection circuit further includes the second electricity
Resistance, the resistance value of the second resistance are greater than the resistance value of first resistor, and the second resistance and the voltage detecting circuit are in parallel, when
When photoswitch pipe disconnects, the voltage detecting circuit detects whether simulated battery leaks electricity by detecting the voltage of second resistance.
7. simulated battery system according to claim 3, it is characterised in that: pass through RS- between host computer and control module
232 or CAN bus connection.
8. simulated battery system according to claim 1, it is characterised in that: the feedback module and control module pass through string
The connection of row Peripheral Interface.
9. simulated battery system according to claim 4, it is characterised in that: the simulated battery system further includes power supply mould
Block, the power supply module supply control module, D/A converter module, constant pressure module, feedback module and current sampling module
Electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822139642.6U CN209417257U (en) | 2018-12-19 | 2018-12-19 | Simulated battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822139642.6U CN209417257U (en) | 2018-12-19 | 2018-12-19 | Simulated battery system |
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| Publication Number | Publication Date |
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| CN209417257U true CN209417257U (en) | 2019-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111866215A (en) * | 2020-07-31 | 2020-10-30 | 珠海市迈卡威超声波技术有限公司 | Voltage signal output method and device |
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2018
- 2018-12-19 CN CN201822139642.6U patent/CN209417257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111866215A (en) * | 2020-07-31 | 2020-10-30 | 珠海市迈卡威超声波技术有限公司 | Voltage signal output method and device |
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