CN112713624B - Sinusoidal envelope pulse current charging circuit and charger - Google Patents
Sinusoidal envelope pulse current charging circuit and charger Download PDFInfo
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- CN112713624B CN112713624B CN202011483247.5A CN202011483247A CN112713624B CN 112713624 B CN112713624 B CN 112713624B CN 202011483247 A CN202011483247 A CN 202011483247A CN 112713624 B CN112713624 B CN 112713624B
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- 238000007600 charging Methods 0.000 title claims abstract description 59
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010278 pulse charging Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a sinusoidal envelope line pulse current charging circuit and a charger, wherein the sinusoidal envelope line pulse current charging circuit comprises: the device comprises a power supply, an AD/DC converter, a DC/DC converter and a control module; the input end of the AD/DC converter is connected with a power supply; the input end of the DC/DC converter is connected with the output end of the AD/DC converter, and the output end of the DC/DC converter is connected with a battery to be charged; the control module is connected with the driving end of the DC/DC converter and used for generating a driving signal according to a power supply and controlling the DC/DC converter to work according to the driving signal so as to output sinusoidal envelope line pulse current to charge a battery to be charged. According to the sinusoidal envelope line pulse current charging circuit, sinusoidal envelope line pulse current can be generated to charge a battery to be charged, so that the charging speed and the service life of the battery to be charged are greatly improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of battery charging, in particular to a sinusoidal envelope line pulse current charging circuit and a charger.
Background
In the related art, the charger generally charges the battery to be charged through the power electronic converter, however, the power electronic converter cannot generate the sinusoidal envelope pulse current, and thus, the production cost cannot be reduced, the charging speed of the battery to be charged cannot be increased, and the service life of the battery to be charged cannot be prolonged.
Disclosure of Invention
The invention provides a sinusoidal envelope line pulse current charging circuit for solving the technical problems, which can generate sinusoidal envelope line pulse current to charge a battery to be charged, thereby greatly improving the charging speed and the service life of the battery to be charged and reducing the production cost.
The technical scheme adopted by the invention is as follows:
a sinusoidal envelope pulsed current charging circuit comprising: the system comprises a power supply, an AD/DC converter, a DC/DC converter and a control module; the input end of the AD/DC converter is connected with a power supply; the input end of the DC/DC converter is connected with the output end of the AD/DC converter, and the output end of the DC/DC converter is connected with a battery to be charged; the control module is connected with the driving end of the DC/DC converter and used for generating a driving signal according to a power supply and controlling the DC/DC converter to work according to the driving signal so as to output sinusoidal envelope line pulse current to charge a battery to be charged.
The control module includes: the voltage tracking unit is used for tracking the phase and the frequency of the power supply; a calculation unit for calculating a charging current reference value according to a phase and a frequency of the power supply; a subtractor for calculating a difference between the charging current reference value and the charging current actual value; the PI controller is used for updating the control quantity of the DC/DC converter according to the difference value of the charging current reference value and the charging current actual value; and the driving unit is used for generating the driving signal according to the updated control quantity of the DC/DC converter, controlling the DC/DC converter to work by the driving signal and outputting sinusoidal envelope line pulse current to charge the battery to be charged.
The voltage tracking unit includes: a second order generalized integrator for filtering the power supply; and the phase-locked loop is used for tracking the phase and the frequency of the filtered power supply.
The sinusoidal envelope pulse current charging circuit further comprises: and the filter capacitor is respectively connected with the output end of the AD/DC converter and the input end of the DC/DC converter.
The filter capacitor is a high-frequency film capacitor.
A charger comprises the sinusoidal envelope line pulse current charging circuit.
The invention has the beneficial effects that:
the invention can generate sinusoidal envelope line pulse current to charge the battery to be charged, thereby not only greatly improving the charging speed and the service life of the battery to be charged, but also reducing the production cost.
Drawings
Fig. 1 is a schematic structural diagram of a sinusoidal envelope pulse current charging circuit according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a control module according to an embodiment of the present invention;
FIG. 3 is a waveform diagram of sinusoidal envelope pulse current in accordance with one embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sinusoidal envelope pulse current charging circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a sinusoidal envelope pulse current charging circuit according to an embodiment of the present invention.
It can be understood that in the process of charging the battery, the pulse current charging is beneficial to improving the charging speed of the battery to be charged and the service life of the battery to be charged, and the double power frequency sine pulse charging mode can remove the aluminum electrolysis direct current bus capacitor of the charger, reduce the size of the charger and prolong the service life of the charger.
However, in the related art, a battery to be charged is generally charged by a power electronic converter, and the power electronic converter cannot generate a sinusoidal envelope pulse current, that is, the current generated by the power electronic converter cannot have both a pulse form and a sinusoidal form at twice power frequency, so that both reduction of production cost and improvement of charging speed and service life of the battery to be charged cannot be achieved.
Therefore, the invention provides a sinusoidal envelope line pulse current charging circuit which can generate sinusoidal envelope line pulse current to charge a battery to be charged, thereby not only greatly improving the charging speed and the service life of the battery to be charged, but also reducing the production cost.
Specifically, as shown in fig. 1, the sinusoidal envelope pulse current charging circuit according to the embodiment of the present invention may include: power supply 100, AD/DC converter 200, DC/DC converter 300, and control module 400.
Wherein, the input end of the AD/DC converter 200 is connected to the power supply 100; the input end of the DC/DC converter 300 is connected with the output end of the AD/DC converter 200, and the output end of the DC/DC converter 300 is connected with a battery to be charged; the control module 400 is connected to the driving end of the DC/DC converter 300, and the control module 400 is configured to generate a driving signal according to the power supply 100, and control the DC/DC converter 300 to work according to the driving signal, so as to output a sinusoidal envelope pulse current to charge the battery to be charged.
Specifically, the power supply 100 may be an alternating current power supply, the alternating current output by the power supply 100 may be converted by the AD/DC converter 200 to output a direct current, and the direct current is input to the DC/DC converter 300, at this time, the control module 400 may generate a corresponding driving signal according to the power supply 100 and control the DC/DC converter 300 to operate according to the driving signal, so that the DC/DC converter 300 may output a sinusoidal envelope pulse current after converting the direct current to charge the battery to be charged.
Therefore, sinusoidal envelope line pulse current can be generated to charge the battery to be charged, so that the charging speed and the service life of the battery to be charged are greatly improved, and the production cost is reduced.
How the control module 400 controls the operation of the DC/DC converter 300 will be described in detail with reference to specific embodiments.
According to an embodiment of the invention, as shown in FIG. 2, the control module 400 may include: a voltage tracking unit 410, a calculation unit 420, a subtractor 430, a PI controller 440, and a driving unit 450.
The voltage tracking unit 410 is configured to track a phase and a frequency of the power supply 100; the calculating unit 420 is configured to calculate a charging current reference value according to the phase and the frequency of the power supply 100; the subtractor 430 is configured to calculate a difference between the charging current reference value and the charging current actual value; the PI controller 440 is configured to update the control amount of the DC/DC converter 300 according to the charging current reference value and the charging current actual value; the driving unit 450 is configured to generate a driving signal according to the updated control amount of the DC/DC converter 300, and control the DC/DC converter 300 to operate according to the driving signal, so as to output a sinusoidal envelope pulse current to charge the battery to be charged.
According to an embodiment of the present invention, as shown in fig. 2, the voltage tracking unit 410 may include a second-order generalized integrator 411 and a phase-locked loop 412. The second-order generalized integrator 411 is used for filtering the power supply 100; the phase locked loop 412 is used to track the phase and frequency of the filtered power supply 100.
Specifically, the power supply 100 may be filtered by a second-order generalized integrator, and the phase and frequency of the filtered power supply 100 may be tracked by the pll 412, and the charging current reference may be calculated by the calculating unit 420 according to the phase and frequency of the power supply 100. At this time, the subtractor 430 may calculate a difference between the charging current reference value and the charging current actual value (i.e., the current value output by the DC/DC converter 300), and the difference is input to the PI controller 430, and the PI controller 440 may output the control amount of the DC/DC converter 300 to update the control amount of the DC/DC converter 300, and input the updated control amount to the driving unit 450. The driving unit 450 may generate a corresponding driving signal according to the updated control amount of the DC/DC converter 300, and input the driving signal to a control terminal of the DC/DC converter 300 (for example, to a control terminal of a power semiconductor device, such as an IBGT, in the DC/DC converter 300) to control the operation of the DC/DC converter 300, so as to output a sinusoidal envelope pulse current to charge the battery to be charged.
As a possible embodiment, the PI controller 440 may be triggered by a trigger signal. As shown in fig. 3, the trigger signal is triggered once in each pulse period, and thus, the PI controller 440 updates the control amount only once in each pulse period. Wherein, when the driving signal is turned offThe driving unit 450 may output a driving signal to control the DC/DC converter 300 to turn off, and at this time, the charging current I output by the DC/DC converter 300 bat Pulse valley (zero current); when the driving signal is turned on, the driving unit 450 may output the driving signal to control the DC/DC converter 300 to be turned on, and at this time, the charging current I output by the DC/DC converter 300 bat Is the pulse peak. Thus, the charging current that can be output by the DC/DC converter 300 may be in the form of pulses, and the amplitude of the pulses fluctuates in the form of a sine at twice the power frequency to form a sine envelope, i.e., to output a sine envelope pulse current.
Therefore, the invention can not only utilize pulse current charging to improve the service life and the charging speed of the battery to be charged, but also transfer the double power frequency reactive power of the power grid side to the battery to be charged, thereby removing the aluminum electrolysis bus capacitor of the charger and reducing the production cost.
According to an embodiment of the present invention, as shown in fig. 4, the sinusoidal envelope pulse current charging circuit may further include a filter capacitor 500, wherein the filter capacitor 500 is respectively connected to the output terminal of the AD/DC converter 200 and the input terminal of the DC/DC converter 300. Specifically, a filter capacitor 500 may be further provided between the output terminal of the AD/DC converter 200 and the input terminal of the DC/DC converter 300, so as to filter the direct current output from the AD/DC converter 200 through the filter capacitor 500, and input the filtered direct current to the DC/DC converter 300. The filter capacitor 500 may be a high frequency film capacitor, and the average value of the high frequency film capacitor current is zero.
According to the sinusoidal envelope pulse current charging circuit provided by the embodiment of the invention, the input end of the AD/DC converter is connected with the power supply, the input end of the DC/DC converter is connected with the output end of the AD/DC converter, the output end of the DC/DC converter is connected with a battery to be charged, the control module is connected with the drive end of the DC/DC converter, a drive signal is generated by the control module according to the power supply, the DC/DC converter is controlled to work according to the drive signal, and sinusoidal envelope pulse current is output to charge the battery to be charged. Therefore, the sinusoidal envelope line pulse current can be generated to charge the battery to be charged, so that the charging speed and the service life of the battery to be charged are greatly improved, and the production cost is reduced.
The invention further provides a charger corresponding to the embodiment.
The charger of the embodiment of the invention can comprise the sinusoidal envelope line pulse current charging circuit.
According to the charger provided by the embodiment of the invention, the sinusoidal envelope line pulse current can be generated to charge the battery to be charged, so that the charging speed and the service life of the battery to be charged are greatly improved, and the production cost is reduced.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A sinusoidal envelope pulsed current charging circuit, comprising: the system comprises a power supply, an AD/DC converter, a DC/DC converter and a control module; wherein the content of the first and second substances,
the input end of the AD/DC converter is connected with the power supply;
the input end of the DC/DC converter is connected with the output end of the AD/DC converter, and the output end of the DC/DC converter is connected with a battery to be charged;
the control module is connected with the driving end of the DC/DC converter and used for generating a driving signal according to the power supply and controlling the DC/DC converter to work according to the driving signal so as to output sinusoidal envelope line pulse current to charge the battery to be charged; wherein the control module comprises: the voltage tracking unit is used for tracking the phase and the frequency of the power supply; a calculation unit for calculating a charging current reference value according to a phase and a frequency of the power supply; a subtractor for calculating a difference between the charging current reference value and the charging current actual value; the PI controller is used for updating the control quantity of the DC/DC converter according to the difference value of the charging current reference value and the charging current actual value; and the driving unit is used for generating the driving signal according to the updated control quantity of the DC/DC converter, controlling the DC/DC converter to work by using the driving signal and outputting sinusoidal envelope line pulse current to charge the battery to be charged.
2. The sinusoidal envelope pulse current charging circuit of claim 1, wherein the voltage tracking unit comprises:
a second order generalized integrator for filtering the power supply;
and the phase-locked loop is used for tracking the phase and the frequency of the filtered power supply.
3. The sinusoidal envelope pulse current charging circuit of claim 1, further comprising:
and the filter capacitor is respectively connected with the output end of the AD/DC converter and the input end of the DC/DC converter.
4. The sinusoidal envelope pulse current charging circuit of claim 3, wherein the filter capacitor is a high frequency film capacitor.
5. A charger, characterized by comprising the sinusoidal envelope pulse current charging circuit according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011483247.5A CN112713624B (en) | 2020-12-16 | 2020-12-16 | Sinusoidal envelope pulse current charging circuit and charger |
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| CN202011483247.5A CN112713624B (en) | 2020-12-16 | 2020-12-16 | Sinusoidal envelope pulse current charging circuit and charger |
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| CN112713624A CN112713624A (en) | 2021-04-27 |
| CN112713624B true CN112713624B (en) | 2022-09-06 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212612A (en) * | 2019-06-28 | 2019-09-06 | 刘塘兵 | A kind of high energy efficiency pulse charging apparatus and its control method |
| CN110383665A (en) * | 2018-09-11 | 2019-10-25 | Oppo广东移动通信有限公司 | Power supply provides device and charge control method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110383665A (en) * | 2018-09-11 | 2019-10-25 | Oppo广东移动通信有限公司 | Power supply provides device and charge control method |
| CN110212612A (en) * | 2019-06-28 | 2019-09-06 | 刘塘兵 | A kind of high energy efficiency pulse charging apparatus and its control method |
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Address after: 213000 5-a201, chuangyangang, Changzhou science and Education City, No. 18, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Applicant after: Guochuang mobile energy innovation center (Jiangsu) Co.,Ltd. Address before: Room 354, No. 18, Xinya Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Applicant before: National innovation energy automobile intelligent energy equipment innovation center (Jiangsu) Co.,Ltd. |
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Effective date of registration: 20231206 Address after: 213000 No.39 longhui Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Wanbang Digital Energy Co.,Ltd. Patentee after: Guochuang mobile energy innovation center (Jiangsu) Co.,Ltd. Address before: 213000 5-a201, chuangyangang, Changzhou science and Education City, No. 18, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Guochuang mobile energy innovation center (Jiangsu) Co.,Ltd. |