CN109884531A - A kind of formation of Li-ion batteries volume test power supply device - Google Patents
A kind of formation of Li-ion batteries volume test power supply device Download PDFInfo
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- CN109884531A CN109884531A CN201910165229.3A CN201910165229A CN109884531A CN 109884531 A CN109884531 A CN 109884531A CN 201910165229 A CN201910165229 A CN 201910165229A CN 109884531 A CN109884531 A CN 109884531A
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 38
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 230000006641 stabilisation Effects 0.000 claims abstract description 5
- 238000011105 stabilization Methods 0.000 claims abstract description 5
- 230000005669 field effect Effects 0.000 claims description 99
- 238000004804 winding Methods 0.000 claims description 18
- 230000001629 suppression Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Abstract
The invention discloses a kind of formation of Li-ion batteries volume test power supply devices, by high-frequency isolation rectification/inverter module, low-voltage direct bus, ripple-free charge/discharge module, energy optimal control device, CAN bus transceiver module, CAN bus composition, it is sine wave by the electric current that high-frequency isolation rectification/inverter module controls alternating current side, and the voltage stabilization on low-voltage direct bus is controlled in 6V, ripple-free charge/discharge module is according to the instruction of energy optimal control device come to charging and discharging lithium battery to be measured, using the distributed power supply system of CAN bus, realize the centralized management of lithium battery to be measured, each ripple-free charge/discharge module is managed collectively by energy optimal control device, ripple-free charge/discharge module is controlled according to the instruction of energy optimal control device to charging and discharging lithium battery to be measured.
Description
Technical field
The present invention relates to lithium battery testing field more particularly to a kind of formation of Li-ion batteries volume test power supply devices.
Background technique
For lithium ion battery because energy density is high, technology is increasingly mature and becomes the important development side of energy storage technologies
To.However, lithium ion battery is relative to traditional lead-acid accumulator, production technology is more complicated, and test is also more stringent.Going out
Before factory, all lithium ion batteries will be by chemical conversion test and two links of volume test.The two test process will be to lithium
Ion battery carries out multiple cycle charge discharge electric test.These be realized by a special test power supply, but at present it is such
The efficiency of power supply is all extremely low.
The lithium ion battery test used with current domestic lithium ion battery mark post new energy (Dongguan) Co., Ltd, enterprise
For power supply device, efficiency is less than 50% when battery charging measurement, and battery discharge testing efficiency is then entirely zero, because it is electric
Tank discharge is consumed by resistance heat.Moreover, the heat in discharge process aggravates workshop air conditioner load, further
Exacerbate the power consumption of production.So lithium battery enterprise is all big power consumer, the usual year electricity charge are attained by tens million of members.
The LABT series of products that external product has U.S. Ah guest (Arbin) instrument company to produce, the U.S. must survey (Bitrode)
The VCF-CD series battery charge-discharge machine of company's production, the Battery formation machine of German Di Kalong company production MCR/MCDR series
The Technical comparing of cabinet, selection is advanced, and precision is also higher, but price is high.
Recent years domestic manufacturer, Jiangsu Jinfan Power Science and Technology Co., Ltd production UC-3000GS bus it is battery
At charge and discharge power supply, the inverse type DC bus charge-discharge machine of Huizhou Xinkehua Industrial Co., Ltd.'s production, although there is portion
Divide energy feedback function, but all some are insufficient in terms of being melted into precision controlling, reason is still inadequate to the research of two-way inverter
Deeply, caused by undesirable to the Ripple Suppression of Switching Power Supply.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of formation of Li-ion batteries volume test power supply device,
Design a kind of seven pipe high-frequency isolation rectification of single stage type ully-soft switchingr/inverter circuit.It is real by the Sofe Switch for widening each switching tube
Existing range improves the efficiency under circuit underloading.Switch tube zero is widened by increasing auxiliary circuit and improving the method for PWM mode
Voltage opens range, so as to improve circuit efficiency；Active ripple suppression circuit scheme is proposed to design a kind of active Ripple Suppression
Circuit.The program is filled by increasing a reverse phase ripple current or ripple voltage coupling unit in battery side to reach nothing
The purpose of discharge current ripple.Overcome negative effect of the passive device to active ripple suppression circuit；System optimizing control makes to count
A point in word control in a switch periods is sampled, and reducing is influenced by sample circuit delay.
To achieve the above object, a kind of formation of Li-ion batteries volume test power supply device provided by the invention is realized in
:
A kind of formation of Li-ion batteries volume test power supply device, including high-frequency isolation rectification/inverter module, low-voltage direct are female
Line, ripple-free charge/discharge module, energy optimal control device, CAN bus transceiver module, CAN bus, high-frequency isolation rectification/inversion
Module is connected between alternating current and low-voltage direct bus, and the electric current of control alternating current side is sine wave, and controls low-voltage direct bus
On voltage stabilization in 6V, ripple-free charge/discharge module is connected between low-voltage direct bus and lithium battery to be measured, using distribution
Formula structure, i.e. the corresponding lithium battery to be measured of a ripple-free charge/discharge module, when needing to charge to lithium battery to be measured, no line
Wave charge/discharge module completes charge function, and when needing to discharge to lithium battery to be measured, ripple-free charge/discharge module completes electric discharge function
Can, CAN bus is connected between ripple-free charge/discharge module and CAN bus transceiver module, and CAN bus transceiver module receives energy
After the control information that transmits of amount optimal controller, then ripple-free charge/discharge module is transferred to by CAN bus, it is excellent according to energy
Change the instruction of controller to control ripple-free charge/discharge module to charging and discharging lithium battery to be measured.
High-frequency isolation rectification/inverter module of the invention is equipped with four pipe circuit of three pipe circuit inverter circuits and semibridge system,
By dsp processor, connecting terminal Uin, the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3, the 1-4th insulated gate bipolar crystal
Pipe: Q4, Q5, Q6, Q7, the 1-7th diode: D1, D2, D3, D4, D5, D6, D7, the 1-3rd capacitor: C1, C2, C3, transformer
TX, the first inductance LfComposition, connecting terminal UinConnect with low-voltage direct bus, the source electrode of the first semiconductcor field effect transistor Q1 with
Connecting terminal UinCathode connection, the grid of the first semiconductcor field effect transistor Q1 accesses dsp processor, first diode D1 and
It is connected between the source electrode and drain electrode of the first semiconductcor field effect transistor Q1 after first capacitor C1 is in parallel, the first semiconductcor field effect is brilliant
The drain electrode of body pipe Q1 is connected with primary side winding one end P1 of transformer TX again；The drain electrode of third semiconductcor field effect transistor Q3 with connect
Line terminals UinAnode connection, the grid of third semiconductcor field effect transistor Q3 accesses dsp processor, third diode D3 and the
It is connected between the source electrode and drain electrode of third semiconductcor field effect transistor Q3 after three capacitor C3 are in parallel, third semiconductcor field effect crystal
The source electrode of pipe Q3 is accessed again between the primary side winding both ends of transformer TX；The source electrode of second semiconductcor field effect transistor Q2 and wiring
Terminal UinCathode connection, the grid of the second semiconductcor field effect transistor Q2 accesses dsp processor, the second diode D2 and second
It is connected between the source electrode and drain electrode of the second semiconductcor field effect transistor Q2 after capacitor C2 is in parallel, the second semiconductcor field effect transistor
The drain electrode of Q2 is connected with the primary side winding other end P2 of transformer TX again；The collector of first insulated gate bipolar transistor Q4 with
Vice-side winding one end S1 connection of transformer TX, the 4th diode D4 are connected on the current collection of the first insulated gate bipolar transistor Q4
Between pole and emitter, the 5th diode D5 be connected on the second insulated gate bipolar transistor Q5 collector and emitter it
Between, the emitter of the first insulated gate bipolar transistor Q4 is connect with the emitter of the second insulated gate bipolar transistor Q5, the
Access DSP processing after the grid of one insulated gate bipolar transistor Q4 is connect with the grid of the second insulated gate bipolar transistor Q5
Device；The vice-side winding both ends of transformer TX indirectly, the collector of third insulated gate bipolar transistor Q6 and transformer TX
The S2 connection of the vice-side winding other end, the 6th diode D6 is connected on the collector and hair of third insulated gate bipolar transistor Q6
Between emitter-base bandgap grading, the 7th diode D7 is connected between the collector and emitter of the 4th insulated gate bipolar transistor Q7, third
The emitter of insulated gate bipolar transistor Q6 is connect with the emitter of the 4th insulated gate bipolar transistor Q7, third insulated gate
The grid of bipolar junction transistor Q6 accesses dsp processor after connecting with the grid of the 4th insulated gate bipolar transistor Q7, and first
Inductance LfIt is connected on the collector of the second insulated gate bipolar transistor Q5, the collector of the 4th insulated gate bipolar transistor Q7
Between alternating current.
Dsp processor of the invention generates pwm pulse signal and controls the 1-3rd semiconductcor field effect transistor respectively: Q1, Q2,
Q3 and the 1-4th insulated gate bipolar transistor: Q4, Q5, Q6, Q7's cut-offs, and line voltage is in positive half cycle, because the first half
The grid of the grid of conductor field-effect transistor Q1 and the second semiconductcor field effect transistor Q2, the first insulated gate bipolar transistor Q4
Grid, the second insulated gate bipolar transistor Q5 grid and third insulated gate bipolar transistor Q6 grid, the 4th absolutely
The grid of edge grid bipolar junction transistor Q7 has common section, this makes the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3 and
1-4th insulated gate bipolar transistor: it is open-minded that Q4, Q5, Q6, Q7 are able to achieve no-voltage；When line voltage is in negative half period,
The grid and third insulated gate bipolar of the grid of one insulated gate bipolar transistor Q4, the second insulated gate bipolar transistor Q5
The grid of transistor Q6, the 4th insulated gate bipolar transistor Q7 grid signal and line voltage positive half cycle when exchange, although
Dsp processor generates pwm pulse signal component containing power frequency sine wave, but because three pipe circuit inverter circuits and semibridge system four pipes electricity
The PWM mode on road, so that the transformer TX voltage-second product of even-times and the transformer TX voltage-second product difference of adjacent odd time are only
It is really applied to voltage-second product on transformer TX, so transformer TX still works as high frequency exciting current mode, is contained only
The volume ratio tradition Industrial Frequency Transformer of the power frequency exciting current of very little, transformer TX is much smaller.
Ripple-free charge/discharge module of the invention is equipped with ripple-free charge/discharge circuit, by the 8th diode D8, the 4th
Semiconductcor field effect transistor Q8, the 5th semiconductcor field effect transistor Q9, the 9th diode D9, the second inductance L1, the suppression of active ripple
Circuit composition processed, in order to improve circuit efficiency, using synchronous rectification, utilizes the 4th semiconductcor field effect transistor Q8, the 5th
The small characteristic of conducting resistance is logical under low-voltage, high-current to reduce circuit when semiconductcor field effect transistor Q9 is driven in the reverse direction conducting
State loss, in which: the 8th diode D8 is connected between the drain electrode and source electrode of the 4th semiconductcor field effect transistor Q8, and the 4th half leads
The drain electrode of body field-effect transistor Q8 is connect with the anode of low-voltage direct bus, and the second inductance L1 is connected on the 4th semiconductcor field effect crystalline substance
Between the source electrode of body pipe Q8, the source electrode and active ripple suppression circuit of the 5th semiconductcor field effect transistor Q9, the 9th diode D9
The cathode of low-voltage direct bus is connect after being connected between the drain electrode and source electrode of the 5th semiconductcor field effect transistor Q9 again, the 4th half leads
The grid of body field-effect transistor Q8, the grid of the 5th semiconductcor field effect transistor Q9 are connected in CAN bus, active Ripple Suppression
Circuit is connect with lithium battery to be measured again, and the 4th semiconductcor field effect transistor Q8 and the 5th semiconductcor field effect transistor Q9 are using complementary
Pulsed drive, to realize synchronous rectification, and promptly switching electric current direction.
Active ripple suppression circuit of the invention be by lithium battery side to be measured increase a reverse phase ripple current or
Ripple voltage coupling unit, to achieve the purpose that no charging and discharging currents ripple.
Energy optimal control device of the invention using TMS320F28335PGFA chip as kernel come system optimizing control,
A point in digital control in a switch periods is sampled, each lithium electricity to be measured is acquired by energy optimal control device
Pond state issues voltage and current instruction, the optimization of energy optimal control device to ripple-free charge/discharge module according to testing requirement
Function reasonable management ripple-free charge/discharge module charging and discharging state takes out each ripple-free charge/discharge module from low-voltage direct bus
The electric current summation for taking or pouring into is minimum, to reduce the energy exchange between low-voltage direct bus and alternating current, improves the efficiency of system.
Since the present invention uses seven pipe ully-soft switchingr high-frequency isolation rectification of single stage type/inverter circuit and ripple-free charge/discharge
Circuit designs the structure of distributed battery chemical conversion volume test power-supply system suitable for lithium battery industry a kind of, so as to
Obtain it is following the utility model has the advantages that
1. the present invention uses seven pipe ully-soft switchingr high-frequency isolation rectification of single stage type/inverter circuit, it is different from traditional to low
Piezoelectric battery first does high-frequency isolation boost, then does the two-stage type structure of inversion.Low-voltage direct end is a three pipe circuits on the left of circuit
Inverter circuit, right side mains terminal are four pipe circuits of a semibridge system.Sofe Switch by widening each switching tube realizes range, mentions
High circuit is lightly loaded lower efficiency.It is open-minded to widen switch tube zero voltage by the method for increasing auxiliary circuit or improvement PWM mode
Range reduces the current waveform distortion factor under underloading to improve circuit efficiency, reduces the pollution to power grid.
2. the present invention uses synchronous rectification, circuit efficiency is improved, it is reversed using power semiconductor field-effect transistor
The small characteristic of conducting resistance reduces on-state loss of the circuit under low-voltage, high-current when driving conducting.Basic structure uses two
The driving of semiconductcor field effect transistor complementary pulse, to realize synchronous rectification, and promptly switching electric current direction.Meanwhile it is different
The technology that ripple-free electric current is realized in the multiphase Interleave parallel connection of existing complexity, by increasing a reverse phase in battery side
Ripple current or ripple voltage coupling unit form active ripple suppression circuit, to reach the mesh of no charging and discharging currents ripple
's.
Detailed description of the invention
Fig. 1 is a kind of working principle diagram of formation of Li-ion batteries volume test power supply device of the present invention；
Fig. 2 is the present invention a kind of three pipe circuit inverter circuits and semibridge system four of formation of Li-ion batteries volume test power supply device
Pipe circuit diagram；
The the 1-3rd half leads when Fig. 3 is a kind of line voltage positive half cycle of formation of Li-ion batteries volume test power supply device of the present invention
Body field-effect transistor: Q1, Q2, Q3, the 1-4th insulated gate bipolar transistor: the PWM mode of Q4, Q5, Q6, Q7；
Fig. 4 is a kind of ripple-free charge/discharge circuit schematic diagram of formation of Li-ion batteries volume test power supply device of the present invention.
Main element symbol description.
| High-frequency isolation rectification/inverter module | 1 | Low-voltage direct bus | 2 |
| Ripple-free charge/discharge module | 3 | Energy optimal control device | 4 |
| CAN bus transceiver module | 5 | CAN bus | 6 |
| Active ripple suppression circuit | 7 |
Specific embodiment
Below with reference to embodiment and compares attached drawing invention is further described in detail.
Fig. 1 to 4 is please referred to, one of present invention formation of Li-ion batteries volume test power supply device, including high frequency are shown
Isolation rectification/inverter module 1, low-voltage direct bus 2, ripple-free charge/discharge module 3, energy optimal control device 4, CAN bus are received
Send out module 5, CAN bus 6.
As shown in Figure 1, the high-frequency isolation rectification/inverter module 1 is connected between alternating current and low-voltage direct bus 2,
High-frequency isolation rectification/inverter module 1 uses centralized configuration, and power is larger, and the electric current on the one hand controlling alternating current side is sine wave,
On the other hand for the voltage stabilization on control low-voltage direct bus 2 in 6V, ripple-free charge/discharge module 3 is connected to low-voltage direct mother
Between line 2 and lithium battery to be measured, using synchronous rectification, circuit efficiency is improved, utilizes power semiconductor field-effect transistor
The small characteristic of conducting resistance reduces on-state loss of the circuit under low-voltage, high-current when being driven in the reverse direction conducting.And using distributed
Structure, i.e., using two semiconductcor field effect transistor complementary pulse drivings, to realize synchronous rectification, and promptly switching electric current
Direction, the corresponding lithium battery to be measured of one of ripple-free charge/discharge module 3, when needing to charge to lithium battery to be measured, no line
Wave charge/discharge module 3 completes charge function, and when needing to discharge to lithium battery to be measured, ripple-free charge/discharge module 3 completes electric discharge
Function, CAN bus 6 are connected between ripple-free charge/discharge module 3 and CAN bus transceiver module 5, and energy optimal control device 4 is right
Each ripple-free charge/discharge module 3 is managed collectively, and CAN bus transceiver module 5 receives the control that energy optimal control device 4 transmits
After information processed, then pass through CAN bus 6 and be transferred to ripple-free charge/discharge module 3, is controlled according to the instruction of energy optimal control device 4
Ripple-free charge/discharge module 3 processed realizes to be measured charging and discharging lithium battery to be measured using the distributed power supply system of CAN bus 6
The centralized management of lithium battery, it is long-range to control, it is melted into Automatic Control.
As shown in Fig. 2, the high-frequency isolation rectification/inverter module 1 is equipped with three pipe circuit inverter circuits and semibridge system
Four pipe circuits, by dsp processor, connecting terminal Uin, the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3, the 1-4th insulated gate
Bipolar junction transistor: Q4, Q5, Q6, Q7, the 1-7th diode: D1, D2, D3, D4, D5, D6, D7, the 1-3rd capacitor: C1, C2,
C3, transformer TX, the first inductance LfComposition, connecting terminal UinIt is connect with low-voltage direct bus 2, the first semiconductcor field effect transistor
The source electrode and connecting terminal U of Q1inCathode connection, the grid of the first semiconductcor field effect transistor Q1 accesses dsp processor, first
It is connected between the source electrode and drain electrode of the first semiconductcor field effect transistor Q1 after diode D1 and first capacitor C1 is in parallel, the first half
The drain electrode of conductor field-effect transistor Q1 is connected with primary side winding one end P1 of transformer TX again；Third semiconductcor field effect transistor Q3
Drain electrode and connecting terminal UinAnode connection, the grid of third semiconductcor field effect transistor Q3 accesses dsp processor, the three or two
It is connected between the source electrode and drain electrode of third semiconductcor field effect transistor Q3 after pole pipe D3 and third capacitor C3 are in parallel, third is partly led
The source electrode of body field-effect transistor Q3 is accessed again between the primary side winding both ends of transformer TX；Second semiconductcor field effect transistor Q2's
Source electrode and connecting terminal UinCathode connection, the grid of the second semiconductcor field effect transistor Q2 accesses dsp processor, the two or two pole
It is connected between the source electrode and drain electrode of the second semiconductcor field effect transistor Q2 after pipe D2 and the second capacitor C2 are in parallel, the second semiconductor
The drain electrode of field-effect transistor Q2 is connected with the primary side winding other end P2 of transformer TX again；First insulated gate bipolar transistor Q4
Collector connect with vice-side winding one end S1 of transformer TX, the 4th diode D4 is connected on the first insulated gate bipolar crystal
Between the collector and emitter of pipe Q4, the 5th diode D5 be connected on the collector of the second insulated gate bipolar transistor Q5 with
Between emitter, the emitter of the emitter of the first insulated gate bipolar transistor Q4 and the second insulated gate bipolar transistor Q5
Connection, the grid of the first insulated gate bipolar transistor Q4 access after connecting with the grid of the second insulated gate bipolar transistor Q5
Dsp processor；The vice-side winding both ends of transformer TX indirectly, the collector of third insulated gate bipolar transistor Q6 and change
The vice-side winding other end S2 connection of depressor TX, the 6th diode D6 are connected on the current collection of third insulated gate bipolar transistor Q6
Between pole and emitter, the 7th diode D7 be connected on the 4th insulated gate bipolar transistor Q7 collector and emitter it
Between, the emitter of third insulated gate bipolar transistor Q6 is connect with the emitter of the 4th insulated gate bipolar transistor Q7, the
Access DSP processing after the grid of three insulated gate bipolar transistor Q6 is connect with the grid of the 4th insulated gate bipolar transistor Q7
Device, the first inductance LfIt is connected on collector, the 4th insulated gate bipolar transistor Q7 of the second insulated gate bipolar transistor Q5
Collector and alternating current between, in which:
The control basic structure of four pipe circuit of three pipe circuit inverter circuits and semibridge system is that an outer voltage adds in electric current
The double -loop control structure of ring.Outer voltage therein controls input voltage (2 voltage of low-voltage direct bus) trace command voltage
(6V).It is modulated after the compensated device of Voltage loop error by sine wave signal, generates the command signal of electric current loop.The signal passes through electric current
It is sine wave that closed loop, which adjusts inductive current (i.e. alternating current side electric current),.Because of the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3, the
1-4 insulated gate bipolar transistors: Q4, Q5, Q6, Q7 part are all two-way, it is possible to realize the two-way flow of energy.It is logical
It crosses and widens the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3, the 1-4th insulated gate bipolar transistor: Q4, Q5, Q6, Q7's
Sofe Switch realizes range, improves the efficiency under circuit underloading, reduces the current waveform distortion factor under underloading, reduces the dirt to power grid
Dye.
The dsp processor generates pwm pulse signal and controls the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3 respectively
With the 1-4th insulated gate bipolar transistor: Q4, Q5, Q6, Q7's cut-offs, the 1-3rd semiconductcor field effect when line voltage positive half cycle
Transistor: Q1, Q2, Q3, the 1-4th insulated gate bipolar transistor: the PWM mode of Q4, Q5, Q6, Q7 are as shown in figure 3, alternating current is electric
When being pressed in positive half cycle, because the grid of the grid of the first semiconductcor field effect transistor Q1 and the second semiconductcor field effect transistor Q2,
The grid and third insulated gate bipolar of the grid of first insulated gate bipolar transistor Q4, the second insulated gate bipolar transistor Q5
The grid of transistor npn npn Q6, the 4th insulated gate bipolar transistor Q7 grid have common section, this makes the 1-3rd half to lead
Body field-effect transistor: Q1, Q2, Q3 and the 1-4th insulated gate bipolar transistor: it is open-minded that Q4, Q5, Q6, Q7 are able to achieve no-voltage；
When line voltage is in negative half period, the grid of the first insulated gate bipolar transistor Q4, the second insulated gate bipolar transistor Q5
Grid and the grid of third insulated gate bipolar transistor Q6, the grid signal of the 4th insulated gate bipolar transistor Q7 and city
It is exchanged when piezoelectric voltage positive half cycle, although dsp processor generates pwm pulse signal component containing power frequency sine wave, because of three pipes electricity
The PWM mode of four pipe circuit of road inverter circuit and semibridge system, so that the transformer TX voltage-second product of even-times and adjacent odd
Transformer TX voltage-second product difference be only and be really applied to voltage-second product on transformer TX, so transformer TX still work for
High frequency exciting current mode, contains only the power frequency exciting current of very little, and the volume ratio tradition Industrial Frequency Transformer of transformer TX is small very
It is more.
As shown in figure 4, the ripple-free charge/discharge module 3 is equipped with ripple-free charge/discharge circuit, by the eight or two pole
Pipe D8, the 4th semiconductcor field effect transistor Q8, the 5th semiconductcor field effect transistor Q9, the 9th diode D9, the second inductance L1, have
Source ripple suppression circuit 7 forms, and in order to improve circuit efficiency, using synchronous rectification, utilizes the 4th semiconductcor field effect crystal
The small characteristic of conducting resistance reduces circuit in low pressure big electricity when pipe Q8, the 5th semiconductcor field effect transistor Q9 are driven in the reverse direction conducting
The on-state loss flowed down, in which: the 8th diode D8 is connected between the drain electrode and source electrode of the 4th semiconductcor field effect transistor Q8,
The drain electrode of 4th semiconductcor field effect transistor Q8 is connect with the anode of low-voltage direct bus 2, and the second inductance L1 is connected on the 4th half
Between the source electrode of conductor field-effect transistor Q8, the source electrode and active ripple suppression circuit 7 of the 5th semiconductcor field effect transistor Q9, the
Nine diode D9 connect the negative of low-voltage direct bus 2 again after being connected between the drain electrode and source electrode of the 5th semiconductcor field effect transistor Q9
Pole, the grid of the 4th semiconductcor field effect transistor Q8, the grid of the 5th semiconductcor field effect transistor Q9 are connected in CAN bus 6,
Active ripple suppression circuit 7 is connect with lithium battery to be measured again, and the 4th semiconductcor field effect transistor Q8 and the 5th semiconductcor field effect are brilliant
Body pipe Q9 is driven using complementary pulse, to realize synchronous rectification, and promptly switching electric current direction.
The active ripple suppression circuit 7 is by increasing a reverse phase ripple current or line in lithium battery side to be measured
Wave voltage coupling unit, to achieve the purpose that no charging and discharging currents ripple.
The energy optimal control device 4 using TMS320F28335PGFA chip as kernel come system optimizing control,
Sample a point in digital control in a switch periods, the basic function of energy optimal control device 4 is acquisition
Each lithium battery state to be measured issues voltage and current instruction, its optimization to ripple-free charge/discharge module 3 according to testing requirement
3 charging and discharging state of function reasonable management ripple-free charge/discharge module, makes each ripple-free charge/discharge module 3 from low-voltage direct bus
The 2 electric current summation minimums for extracting or pouring into, to reduce the energy exchange between low-voltage direct bus 2 and alternating current, improve system
Efficiency, that is, realize the centralized management of the energy exchange between alternating current, and realizes the individually flexible charge and discharge of each lithium battery to be measured
Function；And low-voltage direct bus 2 is arranged in the safe voltage of 6V, so that the ripple-free charge/discharge module 3 of lithium battery can be with
It is flexibly placed in the rack of different zones, each rack, which passes through safe 2 row of low-voltage direct bus again and connects together, is connected to height
Frequency isolation rectification/inverter module 1, each ripple-free charge/discharge module 3 are communicated by CAN bus 6 with energy optimal control device 4,
So such structure can be sufficiently energy saving, and be conducive to production distribution.
The working principle and working process of the present invention is as follows:
As shown in Figure 1, controlling the electric current of alternating current side by high-frequency isolation rectification/inverter module 1 is sine wave, and control low
Press the voltage stabilization on DC bus 2 in 6V, ripple-free charge/discharge module 3 is treated according to the instruction of energy optimal control device 4
It surveys charging and discharging lithium battery and the efficiency of circuit is improved using synchronous rectification, reversely driven using power semiconductor field-effect transistor
The small characteristic of conducting resistance reduces on-state loss of the circuit under low-voltage, high-current when dynamic conducting, and uses distributed frame,
I.e. using two semiconductcor field effect transistor complementary pulse drivings, to realize synchronous rectification, and promptly switching electric current direction,
The corresponding lithium battery to be measured of one of ripple-free charge/discharge module 3, when needing to charge to lithium battery to be measured, ripple-free fills/
Discharge module 3 completes charge function, and when needing to discharge to lithium battery to be measured, ripple-free charge/discharge module 3 completes discharging function,
Using the distributed power supply system of CAN bus 6, the centralized management of lithium battery to be measured is realized, it is long-range to control, it is melted into full-automatic control
Each ripple-free charge/discharge module 3 is accessed CAN bus 6, by energy optimal control device 4 to each ripple-free charge/discharge mould by system
Block 3 is managed collectively, and after CAN bus transceiver module 5 receives the control information that energy optimal control device 4 transmits, then passes through CAN
Bus 6 is transferred to ripple-free charge/discharge module 3, and ripple-free charge/discharge mould is controlled according to the instruction of energy optimal control device 4
Block 3 fills lithium battery to be measured.
Claims (5)
1. a kind of formation of Li-ion batteries volume test power supply device, it is characterised in that: including high-frequency isolation rectification/inverter module, low
Press DC bus, ripple-free charge/discharge module, energy optimal control device, CAN bus transceiver module, CAN bus, the high frequency
Isolation rectification/inverter module is connected between alternating current and the low-voltage direct bus, and the electric current of control alternating current side is sine wave, and
The voltage stabilization on the low-voltage direct bus is controlled in 6V, the ripple-free charge/discharge module is connected to the low-voltage direct
Between bus and lithium battery to be measured, using distributed frame, the i.e. corresponding lithium to be measured of a ripple-free charge/discharge module
Battery, when needing to charge to lithium battery to be measured, the ripple-free charge/discharge module completes charge function, needs to lithium electricity to be measured
When tank discharge, the ripple-free charge/discharge module completes discharging function, and the CAN bus is connected to the ripple-free charge/discharge
Between module and the CAN bus transceiver module, the CAN bus transceiver module receives what the energy optimal control device transmitted
After controlling information, then the ripple-free charge/discharge module is transferred to by the CAN bus, according to the energy optimal control
The instruction of device controls the ripple-free charge/discharge module to charging and discharging lithium battery to be measured.
2. formation of Li-ion batteries volume test power supply device according to claim 1, it is characterised in that: the high-frequency isolation is whole
Stream/inverter module is equipped with four pipe circuit of three pipe circuit inverter circuits and semibridge system, by dsp processor, connecting terminal Uin,
1-3 semiconductcor field effect transistors: Q1, Q2, Q3, the 1-4th insulated gate bipolar transistor: Q4, Q5, Q6, Q7, the 1-7th two pole
Pipe: D1, D2, D3, D4, D5, D6, D7, the 1-3rd capacitor: C1, C2, C3, transformer TX, the first inductance LfComposition, connecting terminal
UinIt is connect with low-voltage direct bus, the source electrode and connecting terminal U of the first semiconductcor field effect transistor Q1inCathode connection, first
The grid of semiconductcor field effect transistor Q1 accesses dsp processor, first diode D1 and first capacitor C1 it is in parallel after be connected to the
Between the source electrode and drain electrode of semiconductor field-effect transistor Q1, the drain electrode of the first semiconductcor field effect transistor Q1 again with transformer TX
Primary side winding one end P1 be connected；The drain electrode of third semiconductcor field effect transistor Q3 and connecting terminal UinAnode connection, third
The grid of semiconductcor field effect transistor Q3 accesses dsp processor, third diode D3 and third capacitor C3 it is in parallel after be connected to the
Between the source electrode and drain electrode of three semiconductcor field effect transistor Q3, the source electrode of third semiconductcor field effect transistor Q3 accesses transformer again
Between the primary side winding both ends of TX；The source electrode and connecting terminal U of second semiconductcor field effect transistor Q2inCathode connection, second
The grid of semiconductcor field effect transistor Q2 accesses dsp processor, the second diode D2 and the second capacitor C2 it is in parallel after be connected to the
Between the source electrode and drain electrode of two semiconductcor field effect transistor Q2, the drain electrode of the second semiconductcor field effect transistor Q2 again with transformer TX
Primary side winding other end P2 be connected；The collector of first insulated gate bipolar transistor Q4 and the vice-side winding one of transformer TX
S1 connection is held, the 4th diode D4 is connected between the collector and emitter of the first insulated gate bipolar transistor Q4, and the 5th
Diode D5 is connected between the collector and emitter of the second insulated gate bipolar transistor Q5, and the first insulated gate bipolar is brilliant
The emitter of body pipe Q4 is connect with the emitter of the second insulated gate bipolar transistor Q5, the first insulated gate bipolar transistor Q4
Grid connect with the grid of the second insulated gate bipolar transistor Q5 after access dsp processor；The vice-side winding of transformer TX
Both ends indirectly, the vice-side winding other end S2 of the collector of third insulated gate bipolar transistor Q6 and transformer TX connect
It connects, the 6th diode D6 is connected between the collector and emitter of third insulated gate bipolar transistor Q6, the 7th diode
D7 is connected between the collector and emitter of the 4th insulated gate bipolar transistor Q7, third insulated gate bipolar transistor Q6
Emitter connect with the emitter of the 4th insulated gate bipolar transistor Q7, the grid of third insulated gate bipolar transistor Q6
Dsp processor, the first inductance L are accessed after connecting with the grid of the 4th insulated gate bipolar transistor Q7fIt is connected on the second insulation
Between the collector of grid bipolar junction transistor Q5, the collector and alternating current of the 4th insulated gate bipolar transistor Q7.
3. formation of Li-ion batteries volume test power supply device according to claim 1, it is characterised in that: the dsp processor
Generate pwm pulse signal and control the 1-3rd semiconductcor field effect transistor respectively: Q1, Q2, Q3 and the 1-4th insulated gate bipolar are brilliant
Body pipe: Q4, Q5, Q6, Q7's cut-offs, line voltage in positive half cycle because the grid of the first semiconductcor field effect transistor Q1 and
The grid of second semiconductcor field effect transistor Q2, the grid of the first insulated gate bipolar transistor Q4, the second insulated gate bipolar
The grid of the grid of the grid of transistor Q5 and third insulated gate bipolar transistor Q6, the 4th insulated gate bipolar transistor Q7
There is common section, this makes the 1-3rd semiconductcor field effect transistor: Q1, Q2, Q3 and the 1-4th insulated gate bipolar transistor:
It is open-minded that Q4, Q5, Q6, Q7 are able to achieve no-voltage；When line voltage is in negative half period, the grid of the first insulated gate bipolar transistor Q4
Pole, the grid of the grid of the second insulated gate bipolar transistor Q5 and third insulated gate bipolar transistor Q6, the 4th insulated gate
It is exchanged when the grid signal of bipolar junction transistor Q7 is with line voltage positive half cycle, although dsp processor generates pwm pulse signal and contains
Power frequency sine wave component, but because of the PWM mode of four pipe circuit of three pipe circuit inverter circuits and semibridge system, so that the change of even-times
The transformer TX voltage-second product difference of depressor TX voltage-second product and adjacent odd time is only the weber being really applied on transformer TX
Product contains only the power frequency exciting current of very little, transformer TX so transformer TX still works as high frequency exciting current mode
Volume ratio tradition Industrial Frequency Transformer it is much smaller.
4. formation of Li-ion batteries volume test power supply device according to claim 1, it is characterised in that: the ripple-free fills/
Discharge module is equipped with ripple-free charge/discharge circuit, by the 8th diode D8, the 4th semiconductcor field effect transistor Q8, the 5th half
Conductor field-effect transistor Q9, the 9th diode D9, the second inductance L1, active ripple suppression circuit composition, in order to improve circuit effect
Rate is driven in the reverse direction using synchronous rectification using the 4th semiconductcor field effect transistor Q8, the 5th semiconductcor field effect transistor Q9
The small characteristic of conducting resistance reduces on-state loss of the circuit under low-voltage, high-current when conducting, in which: the 8th diode D8 string
It is associated between the drain electrode and source electrode of the 4th semiconductcor field effect transistor Q8, the drain electrode and low pressure of the 4th semiconductcor field effect transistor Q8
The anode connection of DC bus, the second inductance L1 are connected on the source electrode of the 4th semiconductcor field effect transistor Q8, the 5th semiconductcor field
Between the source electrode and active ripple suppression circuit for imitating transistor Q9, the 9th diode D9 is connected on the 5th semiconductcor field effect transistor
The cathode of low-voltage direct bus, the grid of the 4th semiconductcor field effect transistor Q8, the 5th are connect after between the drain electrode and source electrode of Q9 again
The grid of semiconductcor field effect transistor Q9 is connected in CAN bus, and active ripple suppression circuit is connect with lithium battery to be measured again, the
Four semiconductcor field effect transistor Q8 and the 5th semiconductcor field effect transistor Q9 are driven using complementary pulse, to realize synchronous rectification,
And promptly switching electric current direction.
5. formation of Li-ion batteries volume test power supply device according to claim 1, it is characterised in that: the energy-optimised control
Device processed using TMS320F28335PGFA chip as kernel come system optimizing control, make in digital control in a switch periods
In a point sampled, each lithium battery state to be measured is acquired by the energy optimal control device, according to testing requirement pair
The ripple-free charge/discharge module issues voltage and current instruction, the optimization function reasonable management of the energy optimal control device
The ripple-free charge/discharge module charging and discharging state, make each ripple-free charge/discharge module from low-voltage direct bus extract or
The electric current summation poured into is minimum, to reduce the energy exchange between the low-voltage direct bus and alternating current, improves the efficiency of system.
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