CN106533204A - Resonant AC/DC conversion device and control method thereof - Google Patents
Resonant AC/DC conversion device and control method thereof Download PDFInfo
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- CN106533204A CN106533204A CN201610910264.XA CN201610910264A CN106533204A CN 106533204 A CN106533204 A CN 106533204A CN 201610910264 A CN201610910264 A CN 201610910264A CN 106533204 A CN106533204 A CN 106533204A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a resonant AC/DC conversion device and a control method thereof. The AC/DC conversion device comprises a rectification circuit, a resonant conversion circuit and a control circuit. The rectification circuit and the resonant conversion circuit are connected in series. The control circuit detects an output variable of the resonant conversion circuit and calculates an output error control variable. The output error control variable is multiplied with an input voltage sampling value of the resonant conversion circuit, and the obtained product is taken as a reference value. The control circuit uses the reference value and an input current sampling value of the resonant conversion circuit to calculate to generate a driving signal for controlling the switching on and off of a switching device in the resonant conversion device. The technical scheme achieves soft switching of the switching device in the resonant conversion circuit, and improves the power density of the circuit. The resonant conversion circuit carries out power factor correction and output adjustment at the same time. A single-stage structure is adopted in the circuit, so that the cost is greatly reduced, and the structure can be applied to light and thin high-efficiency power supply products.
Description
Technical field
The present invention is relevant power factor correction technology, and in particular to single stage type power factor conversion device.
Background technology
With regard to AC/DC transfer device, it is known that such technical scheme is usually used in technology, as shown in figure 1, including
Rectification circuit 11, preceding stage DC-DC translation circuit 12 and rear class DC-DC conversion circuit 13, the input terminal of the rectification circuit 11
IN receives exchange input AC, and carries out rectification to which, output is provided to the input terminal of preceding stage DC-DC translation circuit 12
MID1, the input terminal MID2 of the output connection most rear class DC-DC conversion circuit 13 of preceding stage DC-DC translation circuit 12, after
The output end of level DC-DC conversion circuit 13 is lead-out terminal OUT, there is provided output voltage Vout.Preceding stage DC-DC translation circuit 12 is real
Existing PFC, makes the electric current on terminal MID1 in steamed bun ripple, so that the electric current on input terminal IN is in sine, meets
The requirement of PFC.Preceding stage DC-DC translation circuit 12 is typically chosen in boost type (Boost) converter, makes output electricity
Press as fixed value Vmid2, input current Imid1 is in steamed bun ripple.Rear class DC-DC conversion circuit 13 converts input voltage Vmid2
Into required voltage Vout or electric current Iout.
AC/DC transfer device in known technology employs two-layer configuration, and preceding stage DC-DC translation circuit 12 is to open firmly
Powered-down road, disturbs between switching loss and circuit, and switching frequency cannot be set to very high frequency, which greatly limits the level
The power density of circuit, is unfavorable for realizing circuit miniaturization.And the circuit structure of two-stage type is more using device, cost is relative
It is higher.
The content of the invention
The present invention exactly thinks and in this, there is provided a kind of resonance type AC DC converter and its control method, using whole
The scheme of the after-applied controlled resonant converter of stream bridge, this single step arrangement simplify circuit, reduce cost, and by the present invention
Control method realize the Sofe Switch of circuit breaker in middle device.
For reaching above-mentioned purpose, the technical solution used in the present invention is：
Resonance type AC DC converter, including rectification circuit and resonant transform circuit, the input of the rectification circuit
End receives the input connection of exchange input, its output end and the resonant transform circuit, and the rectification circuit realizes that exchange is straight
Rheology is changed, and the resonant transform circuit is realized PFC and adjusts output, the resonance type AC DC converter
Also include：
One output control circuit, detects the output variable of the resonant transform circuit, calculates output error controlled quentity controlled variable；
One input voltage sample circuit, detects the input voltage of the resonant transform circuit, output-input voltage sampled value；
One mlultiplying circuit, the output error controlled quentity controlled variable is multiplied with the input voltage sampled value, and exports input electricity
Flow control reference value；
One input control circuit, detects the input current of the resonant transform circuit, and receives the input current control
Reference value, calculates current error controlled quentity controlled variable；
There is circuit in one drive signal, receive the current error controlled quentity controlled variable, produce drive signal, the drive signal control
Make turning on and off for the resonant transform circuit breaker in middle device.
In a preferred embodiment of the invention, the rectification circuit is the full-bridge rectification electricity being made up of switching device diode
Road.
In a preferred embodiment of the invention, the resonant transform circuit is full-bridge LLC resonant transform circuits.
In a preferred embodiment of the invention, the resonant transform circuit is half-bridge logical link control (LLC) resonant translation circuit.
In a preferred embodiment of the invention, the output control circuit includes output voltage sampling circuit and voltage control
Ring, the output voltage sampling circuit are sampled the output voltage of the resonant transform circuit, and export output voltage sampled value, institute
It is an adjuster to state voltage control loop, receives the output voltage sampled value and output voltage control reference value, calculates output
Control errors amount.
In a preferred embodiment of the invention, the output control circuit includes output current sample circuit and the first electric current
Control ring, the output current of resonant transform circuit described in the output current sampling circuit samples, and export output current sampling
Value, the current regulator are an adjuster, receive the output current sampled value and output current control reference value, calculate
Output error controlled quentity controlled variable.
In a preferred embodiment of the invention, the input control circuit includes input current sample circuit and the second electric current
Control ring, the input current of resonant transformation device described in the input current sampling circuit samples export input current sampled value,
Second current regulator is an adjuster, receives the input current control reference value and the input current sampled value,
Calculate error originated from input controlled quentity controlled variable.
In a preferred embodiment of the invention, the adjuster is proportional and integral controller.
The present invention also provides a kind of control method of resonance type AC DC converter, and the resonance type AC direct current becomes
Changing device includes rectification circuit and resonant transform circuit, and the input of the rectification circuit receives exchange input, its output end and
The input connection of the resonant transform circuit, the control method include：
The output variable of the resonant transform circuit is detected, output error controlled quentity controlled variable is calculated；
The output error controlled quentity controlled variable is multiplied with the input voltage sampled value of resonant transform circuit, and gained product is used as input
Current control reference；
The input current of the resonant transform circuit is detected, input current sampled value is obtained；
Reference value is controlled using input current and input current sampled value is calculated and produces drive signal；
Turning on and off for the resonant transformation device breaker in middle device is controlled using the drive signal.
In a preferred embodiment of the invention, the output variable is output current or output voltage.
Beneficial effect, the present invention realize the power factor to AC/DC transfer device by single-stage resonant transform circuit
Correction and output variable control, circuit structure are simple, and the control method of present invention design realizes resonant transform circuit breaker in middle
The Sofe Switch of device, such that it is able to further improve the switching frequency of switching device, and then reduces the magnetic core such as transformer or inductance
The volume of element, reaches the purpose for reducing whole device volume, improves the power density of device, forms frivolous outward appearance.
It is that the features described above and advantage of invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings to make
Describe in detail as follows.
Description of the drawings
Fig. 1 is the circuit diagram of AC/DC transfer device in known technology.
Fig. 2 is technical solution of the present invention circuit diagram.
Fig. 3 is technical solution of the present invention control circuit schematic diagram.
Fig. 4 is embodied as illustration for control circuit of the present invention.
Fig. 5 is control circuit another specific embodiment figure of the present invention.
Fig. 6 is that rectification circuit of the present invention and resonant transform circuit one are embodied as illustration.
Fig. 7 is rectification circuit of the present invention and resonant transform circuit another specific embodiment figure.
Specific embodiment
For making the purpose and technical scheme of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, is clearly and completely described to the technical scheme of the embodiment of the present invention.Obviously, described embodiment is of the invention
A part of embodiment, rather than the embodiment of whole.Based on described embodiments of the invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of without the need for creative work, belongs to the scope of protection of the invention.
(if present)s such as heretofore described " first ", " second ", " the 3rd " is for carrying out between similar key element
Difference, and it is not necessarily the specific order of description or order temporally.It is appreciated that these terms for so using are suitable
It is interchangeable in the environment of so that the enforcement of theme described here e.g. can be with different from the order that those illustrate
Order or with other order described here being operated.In addition, all possible parts, in diagram and embodiment
Using the component/component/step of identical label, it is to represent same or like part.
The embodiment of the present invention provides a kind of resonance type AC DC converter and its control method, is become using single-stage resonance
Change after being electrically connected to rectification circuit, while realizing that PFC and output variable are adjusted, simplify circuit structure, together
The Sofe Switch of Shi Shixian resonant transform circuit breaker in middle devices.
Technical solution of the present invention circuit block diagram is illustrated in figure 2, the resonance type AC DC converter includes rectification
Circuit 21 and resonant transform circuit 22, the input terminal IN of the rectification circuit receive AC-input voltage Vin, carry out AC-DC
After rectifying conversion, there is provided the input terminal MID of direct current Vmid to the resonant transform circuit, resonant transform circuit 22 are received directly
Stream electricity Vmid, provides output Vout to lead-out terminal OUT, resonant transform circuit 22 after carrying out PFC and output regulation
Ensure that the electric current Imid on terminal MID is in steamed bun ripple so that the electric current Iin on terminal IN realizes PFC in sine.
Fig. 3 is control circuit block diagram of the present invention, as shown in figure 3, adding control circuit in the circuit of fig. 2
34, the control circuit includes：
One output control circuit 341, detects the output variable on the lead-out terminal OUT of the resonant transform circuit 32, meter
Calculate output error controlled quentity controlled variable S1；
One input voltage sample circuit 342, detects the voltage on the input terminal MID of the resonant transform circuit 32
Vmid, output-input voltage sampled value S2；
One mlultiplying circuit 343, the output error controlled quentity controlled variable is multiplied with the input voltage sampled value, and exports input
Current control reference S3；
One input control circuit 344, it is described that the output control circuit 344 includes that input current sample circuit 3441 is detected
The input current of resonant transform circuit, exports input current sampled value S4, also including a current regulator 3442, the electric current control
Ring processed 3442 receives input current control reference value S3 and input current sampled value S4, calculates current error control
Amount S5；
There is circuit 345 in one drive signal, receive current error controlled quentity controlled variable S5, produce drive signal PWM, the drive
Dynamic signal PWM controls turning on and off for the resonant transform circuit breaker in middle device.
Currently preferred, the current regulator 3442 is an adjuster, in particular, is that proportional integral is adjusted
Device, but the present invention is not limited thereto, and any adjuster with regulating calculation can here application.
When input voltage vin reduces from peak value near zero-crossing point, PFC functions require input current to the present invention just
It is corresponding to reduce zero passage, using parallel resonance high gain characteristics at low currents, can be improved by reducing switching frequency
Input and the step-up ratio of outlet chamber, so that maintain the constant of output voltage.
Be illustrated in figure 4 the another specific embodiment figure of input control circuit of the present invention, in the present embodiment, miscellaneous part with
Circuit shown in Fig. 3 is identical, and output control circuit 441 includes output current sample circuit 4411 and current regulator 4412, institute
The output current of 4411 sampling harmonic translation circuit of current sampling circuit, 42 output end OUT is stated, output current sampled value is exported
S02, the current regulator 4412 receive output current sampled value S02 and output current reference value Iref, calculate output and miss
Difference controlled quentity controlled variable S1.
Currently preferred, the current regulator 4412 is an adjuster, in particular, is that proportional integral is adjusted
Device, but the present invention is not limited thereto, and any adjuster with regulating calculation can here application.
It is illustrated in figure 5 the one of input control circuit of the present invention and is embodied as illustration, in the present embodiment, miscellaneous part and figure
Circuit shown in 3 is identical, and output control circuit 541 includes output voltage sampling circuit 5411 and voltage control loop 5412, described
The output voltage of 5411 sampling harmonic translation circuit of voltage sampling circuit, 52 output end OUT, exports output voltage sampled value S01,
The voltage control loop 5412 receives output voltage sampled value S01 and output voltage reference value Vref, calculates output error control
Amount S1 processed.
Currently preferred, the voltage control loop 5412 is an adjuster, in particular, is that proportional integral is adjusted
Device, but the present invention is not limited thereto, and any adjuster with regulating calculation can here application.
As shown in fig. 6, for rectification circuit of the present invention and a specific embodiment of resonance circuit, in the present embodiment, input electricity
Pressure Vin is input into for industrial frequency AC, generally line voltage, is connected to input terminal IN, is that rectification circuit 61 provides input, rectification
Circuit 61 is rectifier bridge DR1～DR4Realize that AC-DC is converted；Rectification circuit 61 and resonant transform circuit 62 are connected by terminal MID
Connection, resonant transform circuit 62 be a half-bridge resonant transform circuit, wherein inductance Lr, electric capacity CrWith inductance LmConstitute LLC resonant rings
Section；Switch S1, S2With electric capacity C1, C2High-frequency inverter circuit is constituted, DC voltage is changed into high-frequency ac amount；Diode DF1, DF2
The semibridge system rectification circuit of resonance circuit is constituted with electric capacity CF1, CF2, being rectified into end by the high-frequency alternating current of resonant network
Direct current needed for sub- OUT.Output filter capacitor Co and load Ro is connected in parallel on lead-out terminal OUT.During power frequency half-wave,
When input voltage vin reduces from peak value near zero-crossing point, PFC functions require that input current also accordingly reduces zero passage just,
Using parallel resonance high gain characteristics at low currents, input and outlet chamber can be improved by reducing switching frequency
Step-up ratio, so as to maintain the constant of output voltage.
As shown in fig. 7, for rectification circuit of the present invention and the another specific embodiment of resonance circuit, in the present embodiment, input
Voltage Vin is input into for industrial frequency AC, generally line voltage, is connected to input terminal IN, is that rectification circuit 71 provides input, whole
Current circuit 71 is that the full bridge rectifier that diode DR1～DR4 is constituted realizes that AC-DC is converted；Rectification circuit 71 and resonant transformation
Circuit 72 is connected in series by terminal MID, resonant transform circuit 72 be full-bridge resonant transform circuit, wherein inductance Lr, electric capacity Cr
With transformer T, LLC resonance links are constituted；S1, S2, S3, S4 constitute high-frequency inverter circuit, and DC voltage is changed into high-frequency ac
Amount；DF1, DF2, DF3, DF4 constitute the semibridge system rectification circuit of resonance circuit, by the high-frequency ac electric rectification of resonant network
Into direct current needed for terminal OUT.Output filter capacitor Co and load Ro is connected in parallel on lead-out terminal OUT.
The present invention has extraordinary effect：PFC is directly realized by using controlled resonant converter and exports what is adjusted
Function.Can apply in exchange input, the power conversion of direct current output, particularly require small volume, the power supply of efficiency high, fill
In electrical equipment and Related product.Electric car charger etc. is needed for example；Or in high-power industrial power, such as it is electrolysed electroplating power supply
Deng.
Although the present invention is disclosed above with embodiment, so which is not limited to the present invention, any art
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when a little change and retouching can be made, thus it is of the invention
Protection domain when being defined depending on the defined person of appended claims.
Claims (10)
1. resonance type AC DC converter, including rectification circuit and resonant transform circuit, the input of the rectification circuit
The input connection of exchange input, its output end and the resonant transform circuit is received, the rectification circuit realizes AC/DC
Conversion, the resonant transform circuit are realized PFC and adjust output, it is characterised in that the resonance type AC direct current
Converting means also includes：
One output control circuit, detects the output variable of the resonant transform circuit, calculates output error controlled quentity controlled variable；
One input voltage sample circuit, detects the input voltage of the resonant transform circuit, output-input voltage sampled value；
One mlultiplying circuit, the output error controlled quentity controlled variable is multiplied with the input voltage sampled value, and exports input current control
Reference value processed；
One input control circuit, detects the input current of the resonant transform circuit, and receives the input current control reference
Value, calculates current error controlled quentity controlled variable；
There is circuit in one drive signal, receive the current error controlled quentity controlled variable, produce drive signal, and the drive signal controls institute
State turning on and off for resonant transform circuit breaker in middle device.
2. resonance type AC DC converter as claimed in claim 1, it is characterised in that the rectification circuit is by derailing switch
The full bridge rectifier of part diode composition.
3. resonance type AC DC converter as claimed in claim 1, it is characterised in that the resonant transform circuit is full-bridge
LLC resonant transform circuits.
4. resonance type AC DC converter as claimed in claim 1, it is characterised in that the resonant transform circuit is half-bridge
LLC resonant transform circuits.
5. resonance type AC DC converter as claimed in claim 1, it is characterised in that the output control circuit includes defeated
Go out voltage sampling circuit and voltage control loop, the output voltage sampling circuit is sampled the output electricity of the resonant transform circuit
Pressure, and output voltage sampled value is exported, the voltage control loop is an adjuster, receives the output voltage sampled value and output
Voltage controls reference value, calculates output error controlled quentity controlled variable.
6. resonance type AC DC converter as claimed in claim 1, it is characterised in that the output control circuit includes defeated
Go out current sampling circuit and the first current regulator, the output of resonant transform circuit described in the output current sampling circuit samples
Electric current, and export output current sampled value, the current regulator are an adjuster, receive the output current sampled value and defeated
Go out current control reference, calculate output error controlled quentity controlled variable.
7. resonance type AC DC converter as claimed in claim 1, it is characterised in that the input control circuit includes defeated
Enter current sampling circuit and the second current regulator, the input of resonant transformation device described in the input current sampling circuit samples
Electric current, exports input current sampled value, and second current regulator is an adjuster, receives the input current control reference
Value and the input current sampled value, calculate error originated from input controlled quentity controlled variable.
8. the resonance type AC DC converter as described in claim 5 or 6 or 7, it is characterised in that the adjuster is ratio
Integral controller.
9. the control method of resonance type AC DC converter, the resonance type AC DC converter include rectification circuit
And resonant transform circuit, the input reception exchange input of the rectification circuit, its output end and the resonant transform circuit
Input connects, it is characterised in that the control method includes：
The output variable of the resonant transform circuit is detected, output error controlled quentity controlled variable is calculated；
The output error controlled quentity controlled variable is multiplied with the input voltage sampled value of resonant transform circuit, and gained product is used as input current
Control reference value；
The input current of the resonant transform circuit is detected, input current sampled value is obtained；
Reference value is controlled using input current and input current sampled value is calculated and produces drive signal；
Turning on and off for the resonant transformation device breaker in middle device is controlled using the drive signal.
10. the control method of resonance type AC DC converter as claimed in claim 9, it is characterised in that the output becomes
Measure as output current or output voltage.
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| CN201610910264.XA CN106533204B (en) | 2016-10-19 | 2016-10-19 | Resonance type AC DC converter and its control method |
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| CN201610910264.XA CN106533204B (en) | 2016-10-19 | 2016-10-19 | Resonance type AC DC converter and its control method |
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| CN110190744A (en) * | 2018-02-23 | 2019-08-30 | 台达电子工业股份有限公司 | Power supply device and its control method |
| CN112054699A (en) * | 2020-09-16 | 2020-12-08 | 南通大学 | Integrated PCB (printed circuit board) level meltblown electret power supply topology |
| CN115085553A (en) * | 2021-03-16 | 2022-09-20 | 宁德时代新能源科技股份有限公司 | Bidirectional DC/DC converter, control method and device thereof, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110190744A (en) * | 2018-02-23 | 2019-08-30 | 台达电子工业股份有限公司 | Power supply device and its control method |
| CN112054699A (en) * | 2020-09-16 | 2020-12-08 | 南通大学 | Integrated PCB (printed circuit board) level meltblown electret power supply topology |
| CN115085553A (en) * | 2021-03-16 | 2022-09-20 | 宁德时代新能源科技股份有限公司 | Bidirectional DC/DC converter, control method and device thereof, and storage medium |
| WO2022193765A1 (en) * | 2021-03-16 | 2022-09-22 | 宁德时代新能源科技股份有限公司 | Bidirectional dc/dc converter and control method therefor and apparatus thereof, and storage medium |
| CN115085553B (en) * | 2021-03-16 | 2023-12-22 | 宁德时代新能源科技股份有限公司 | Bidirectional DC/DC converter, control method and device thereof, and storage medium |
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| CN106533204B (en) | 2019-11-12 |
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Effective date of registration: 20200324 Address after: 213100 No.7 Fengxiang Road, Wujin high tech Development Zone, Changzhou City, Jiangsu Province Patentee after: Chip power (Changzhou) Co., Ltd Address before: Everwise road in Qinhuai District of Nanjing City, Jiangsu province 210001 No. 6 Baixia high-tech park Chinese cloud innovation base A building 12 floor Patentee before: FSP-Powerland Technology Inc. |