CN209675988U - A kind of storage battery charge-discharge control system based on DSP - Google Patents
A kind of storage battery charge-discharge control system based on DSP Download PDFInfo
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- CN209675988U CN209675988U CN201920836085.5U CN201920836085U CN209675988U CN 209675988 U CN209675988 U CN 209675988U CN 201920836085 U CN201920836085 U CN 201920836085U CN 209675988 U CN209675988 U CN 209675988U
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- dsp
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Abstract
The utility model discloses a kind of storage battery charge-discharge control systems based on DSP, including dsp controller, and the PWM rectification circuit being connect respectively with dsp controller, IGBT drive circuit, current detection module, voltage detection module and temperature detecting module, AD pin on dsp controller is separately connected current detection module, voltage detection module and temperature detecting module, PWM rectification circuit is three-phase voltage type PWM rectification circuit, the alternating current that city is netted is become into direct current, dsp controller passes through the charging current detected, cell voltage and battery temperature, generate the turn-on and turn-off of pwm signal control IGBT drive circuit, IGBT drive circuit is used to adjust the charging modes of battery.The utility model has the beneficial effects that using PWM Semiconductor Converting Technology and energy back technology, intelligence adjusts charging process, improves net side power factor, reduces harmonic pollution, while improving the charge efficiency of battery.
Description
Technical field
The utility model relates to accumulator cell charging and discharging technical fields, more particularly, to a kind of battery charge and discharge based on DSP
Electric control system.
Background technique
Charge-discharge control system is the part of battery most critical, in traditional accumulator cell charging and discharging mode, is mostly used greatly
Thyristor unsteady flow mode, but thyristor unsteady flow mode net side power factor is low, and harmonic pollution is serious, the design uses PWM
Semiconductor Converting Technology can make system run on unity power factor, greatly reduce its harmonic pollution to power grid.
Utility model content
The purpose of the utility model is to overcome above-mentioned technical deficiencies, propose a kind of accumulator cell charging and discharging control based on DSP
System processed solves the problems, such as to refer in above-mentioned background technique.
The technical solution adopted in the utility model provides a kind of storage battery charge-discharge control system based on DSP, battery
Charging process include trickle charge, constant-current charge and constant-voltage charge, should storage battery charge-discharge control system based on DSP include
Dsp controller and PWM rectification circuit, IGBT drive circuit, current detection module, the voltage being connect respectively with dsp controller
Detection module and temperature detecting module, the AD pin on the dsp controller are separately connected the current detection module, the electricity
Detection module and the temperature detecting module are pressed, the current detection module is used to detect the charging current of battery, the voltage
Detection module is for detecting battery both end voltage, and the temperature detecting module is for detecting battery temperature, the PWM rectification circuit
For three-phase voltage type PWM rectification circuit, the alternating current that city is netted is become into direct current, the dsp controller is filled by what is detected
Electric current, cell voltage and battery temperature generate the turn-on and turn-off that pwm signal controls the IGBT drive circuit, described
IGBT drive circuit is used to adjust the charging modes of battery.
The utility model has the beneficial effects that using PWM Semiconductor Converting Technology and energy back technology, intelligence is adjusted and was charged
Journey improves net side power factor, reduces harmonic pollution, while improving the charge efficiency of battery.
Detailed description of the invention
Fig. 1 is the control schematic diagram of the utility model；
Fig. 2 is the three-phase controlled rectifier circuit in the utility model；
Fig. 3 is the main circuit of battery charging in the utility model；
Fig. 4 is IGBT drive circuit in the utility model；
Fig. 5 is voltage detecting circuit in the utility model；
Fig. 6 is current detection circuit in the utility model；
Fig. 7 is the battery charging flow figure of embodiment 1 in the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, to this reality
It is further elaborated with novel.It should be appreciated that specific embodiment described herein is only used to explain that this is practical new
Type is not used to limit the utility model.
Please refer to Fig. 1-7, the technical solution adopted in the utility model provides a kind of accumulator cell charging and discharging based on DSP
Control system, PWM rectification circuit, IGBT drive circuit, the electric current being connect including dsp controller and respectively with dsp controller
Detection module, voltage detection module and temperature detecting module.
Dsp controller use TMS320LF2407DSP, TMS320LF2407 chip it is cheap, the speed of service is fast, core
The modules such as AD, SPI, SCI, CAN, WatchDog Timer, number I/O, task manager EVA, EVB are integrated in one by piece,
There are 40 general I/O pins, TMS320LF2407DSP chip majority pin is multiplexing pins, in actual application root
It can be configured to general purpose I/O, PWM output, capture CAP pin or external interrupt pin etc. according to specific requirement.In this present embodiment,
PWM wave is generated by the full comparing unit of dsp controller internal event manager, and the period of PWM wave can pass through capturing unit
CAP is learnt, IOPA6~7, IOPB0~3 and IOPE1~4 is selected to be used as PWM wave output pin, the PWM wave tool of these pins output
There is dead zone function characteristic, using IOPA5 as CAP pin is captured, detects the synchronization signal of power grid, at the time of capture can be passed through, obtain
Obtain the period of each PWM wave.
Embodiment 1: the above-mentioned storage battery charge-discharge control system monitoring 36V18AH battery group based on DSP charges,
Wherein the AD pin on dsp controller is separately connected current detection module, voltage detection module and temperature detecting module, selectes
IOPA6~7, IOPB0~3 and IOPE1~4 are used as PWM wave output pin, the driving electricity of the PWM wave exported to corresponding IGBT
Road, so that corresponding IGBT movement is controlled, to control entire charging process.When charging to the battery group, ADCIN01
For detecting battery both end voltage, ADCIN02 is used to detect battery temperature for detecting battery both ends electric current, ADCIN03, when
When detecting that battery both end voltage is less than 31.5V, using trickle charge mode, while the charging current of trickle charge mode is limited
Within the scope of 0.9A-1.8A；When detecting that battery both end voltage is more than or equal to 31.5V, using constant current charging method, this rank
The charging current maximum value of section is no more than 18A；When battery both end voltage is charged to 36V, constant voltage charging method is entered, the rank
The charging current of section is 1.8A, and hereafter, charging current gradually decreases, and when detecting electric current is 0.9A, stops charging to battery.
Meanwhile the charging temperature of entire charging process, no more than 50 degree, temperature is measured in real time by temperature detecting module, temperature
It spends detection module and uses temperature sensor DS18B20, temperature sensor DS18B20 can be measured the temperature of battery, by what is measured
Temperature transition is that electricity is transmitted to dsp controller.
As shown in Figure 1, eab is the line voltage for exchanging side, ia, ib are respectively the phase current for exchanging side A phase, B phase, and Idc is
Charging current, Udc are charging voltage.In order to reach energy saving purpose, an afterflow two has been concatenated among charge and discharge circuit
Pole pipe.Charging circuit side is given by the energy feedback that this freewheeling diode releases battery, improves the utilization rate of energy.By
It cannot directly charge a battery in city's net, the design is using three-phase voltage type PWM rectification circuit, the alternating current that city is netted
Become direct current.The core component of rectification circuit is full-control type voltage driven type power switch component IGBT, conducting and cut-off
It is that the PWM wave generated by DSP controls.But the PWM wave that DSP is generated is not enough to directly drive IGBT, between DSP and IGBT
IGBT drive circuit must be increased, the open and close of control IGBT are gone by the pwm signal that DSP is exported, to realize to electric power storage
The function of pond progress pulse charge.Pulse charge can reduce the gas of battery precipitation well, improve due to polarization phenomena
And bring energy dissipation, while the method can also play the role of devulcanization, so that the charge efficiency of battery is improved, it is right
There are also repairs for battery, extend battery life.It can detecte the voltage of charging, electricity by the corresponding analog-to-digital conversion interface of DSP
The parameters such as the temperature of stream and battery.
City's net 220V alternating current is become direct current by three-phase controlled rectifier circuit and charged a battery by the technical program,
Three-phase controlled rectifier circuit is as shown in Figure 2.Using the electric current and voltage of Bidirectional up-down volt circuit control battery, this circuit is to complete
The key of charge and discharge process energy in bidirectional flow.Battery voltage, electric current and temperature are sent into DSP's by relevant circuit
In ADC channel, realizes and charge to battery fast-pulse.In electric current, the voltage for controlling battery, using boosting and drop
Pressure works alternatively, and in order to reduce HF switch loss, at the both ends switching tube IGBT and connects a freewheeling diode.Battery charging
Main circuit is as shown in figure 3, dsp controller passes through current detection module real-time detection charging current, passes through voltage detection module
Real-time detection cell voltage is sentenced by temperature detecting module real-time detection battery temperature, and according to corresponding real-time voltage numerical value
The disconnected charging stage, and corresponding PWM wave is generated, corresponding IGBT is controlled by pwm signal, so that IGBT is normally connected and closes
It is disconnected, meanwhile, city net exchange side forms low-pass filter by inductance and capacitor, filters out the switch harmonic in electric current.
Fig. 4 is IGBT drive circuit in the utility model, the pwm signal generated by dsp controller TMS320LF2407DSP
Voltage is 0~3.3V, and the driving voltage of IGBT is -5~15V, so directly cannot directly be driven with the pwm signal that DSP is generated
Dynamic IGBT, it is therefore desirable to the DSP pwm signal exported is isolated and be amplified by driving isolating amplifier circuit, so that output
Pwm signal can control IGBT be normally connected with shutdown, the isolating amplifier circuit use HCPL-316J.
Fig. 5 is the voltage detecting circuit in the utility model, which passes through voltage transformer JLBV300FA
Collection voltages data, and be filtered by RC filter circuit, the voltage follower in circuit plays buffer action, steady in circuit
Pressure pipe serves clipping (dsp controller received signal is no more than 3.3V), and collected voltage signal is sent into DSP control
The ADCIN01 interface of device, dsp controller are compared according to detection numerical value with setting numerical value, flexibly control the charging of battery
Journey.
Fig. 6 is the current detection circuit in the utility model, which senses CHB-25NP Hall current
The charging current of device acquisition is converted to voltage by sampling resistor R2, and then by second-order filter circuit, this circuit be by R2,
R3, R4, active filter circuit that C5 and amplifier LM358 are constituted (active power filtering can allow greater than cutoff frequency signal faster
The decaying of speed) constituted with R5, C7, the signal of acquisition is filtered, finally (plays the role of clipping, because thus by voltage-stabiliser tube D11
Money DSP received signal is no more than 3.3V) it is sent into the ADCIN02 interface of dsp controller, dsp controller is according to detection numerical value
It is compared with setting numerical value, in conjunction with the voltage value detected on voltage detecting circuit, the flexibly charging of control battery together
Process.
As shown in fig. 7, operating voltage range is generally between 31.5~41V, figure by taking 36V10Ah battery group as an example
Middle V is accumulator battery voltage, and I is electric current.
In above-mentioned technical proposal, working principle of the utility model is: user is in use, accumulator cell charging and discharging is used
Be three stage pulse charge and discharge control strategies, i.e., first trickle charge, then constant-current charge, last constant-voltage charge.It was charging
Cheng Zhong, to prevent battery to be damaged during the charging process, in constant-current charge, it is necessary to which the maximum voltage for exporting battery is less than
Maximum limitation voltage；And in constant voltage charging phase, it is necessary to assure output electric current is limited no more than the maximum current of battery.In order to
Guarantee that different phase can preferably complete automatic conversion, is believed according to collected battery group end voltage, electric current and temperature etc.
Number, corresponding PWM wave control signal is generated to drive IGBT to do corresponding switch motion, improves the efficiency for charge-discharge of battery group
And prevent and overcharge, over-discharge phenomena such as.
Compared with prior art, the utility model has the beneficial effects that using PWM Semiconductor Converting Technology and energy back skill
Art, intelligence adjust charging process, improve net side power factor, reduce harmonic pollution, while improving the charge efficiency of battery.
Specific embodiment of the present utility model described above does not constitute the restriction to scope of protection of the utility model.
Any other various changes and modifications that any technical concept according to the present utility model is made should be included in practical
In novel scope of protection of the claims.
Claims (5)
1. a kind of storage battery charge-discharge control system based on DSP, the charging process of battery includes trickle charge, constant-current charge
And constant-voltage charge characterized by comprising dsp controller and the PWM rectification circuit being connect respectively with dsp controller,
IGBT drive circuit, current detection module, voltage detection module and temperature detecting module, the AD pin on the dsp controller
It is separately connected the current detection module, the voltage detection module and the temperature detecting module, the current detection module
For detecting the charging current of battery, the voltage detection module is for detecting battery both end voltage, the temperature detecting module
For detecting battery temperature, the PWM rectification circuit is three-phase voltage type PWM rectification circuit, and the alternating current that city is netted is become straight
Galvanic electricity, the dsp controller pass through charging current, cell voltage and the battery temperature detected, generate described in pwm signal control
The turn-on and turn-off of IGBT drive circuit, the IGBT drive circuit are used to adjust the charging modes of battery.
2. a kind of storage battery charge-discharge control system based on DSP as described in claim 1, which is characterized in that the DSP control
Device processed uses TMS320LF2407.
3. a kind of storage battery charge-discharge control system based on DSP as described in claim 1, which is characterized in that the electric current
Detection module uses the Hall current sensor of CHB-25NP.
4. a kind of storage battery charge-discharge control system based on DSP as described in claim 1, which is characterized in that the voltage
Detection module uses the voltage transformer of JLBV300 FA.
5. a kind of storage battery charge-discharge control system based on DSP as described in claim 1, which is characterized in that the temperature
Detection module uses temperature sensor DS18B20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920836085.5U CN209675988U (en) | 2019-06-04 | 2019-06-04 | A kind of storage battery charge-discharge control system based on DSP |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920836085.5U CN209675988U (en) | 2019-06-04 | 2019-06-04 | A kind of storage battery charge-discharge control system based on DSP |
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| CN209675988U true CN209675988U (en) | 2019-11-22 |
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| CN201920836085.5U Expired - Fee Related CN209675988U (en) | 2019-06-04 | 2019-06-04 | A kind of storage battery charge-discharge control system based on DSP |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104109A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Controller circuit for wireless power transmission system |
| CN112531857A (en) * | 2020-12-30 | 2021-03-19 | 国网河南省电力公司信息通信公司 | Battery thermal detection control device of storage battery |
| US11601018B2 (en) | 2020-09-11 | 2023-03-07 | Zhejiang University | Control system for wireless power transfer system |
-
2019
- 2019-06-04 CN CN201920836085.5U patent/CN209675988U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104109A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Controller circuit for wireless power transmission system |
| US11601018B2 (en) | 2020-09-11 | 2023-03-07 | Zhejiang University | Control system for wireless power transfer system |
| CN112531857A (en) * | 2020-12-30 | 2021-03-19 | 国网河南省电力公司信息通信公司 | Battery thermal detection control device of storage battery |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20191122 Termination date: 20200604 |