CN116247771A - Inverter activated lithium battery device with protection function and control method thereof - Google Patents
Inverter activated lithium battery device with protection function and control method thereof Download PDFInfo
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- CN116247771A CN116247771A CN202310230546.5A CN202310230546A CN116247771A CN 116247771 A CN116247771 A CN 116247771A CN 202310230546 A CN202310230546 A CN 202310230546A CN 116247771 A CN116247771 A CN 116247771A
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- lithium battery
- relay
- circuit
- battery
- power supply
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- 150000002641 lithium Chemical class 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 69
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 69
- 230000004913 activation Effects 0.000 claims abstract description 45
- 238000007599 discharging Methods 0.000 claims description 11
- 230000020411 cell activation Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses an inverter activated lithium battery device with a protection function and a control method thereof. The inverter activates the lithium battery device, including main circuit, lithium battery activation circuit, electric wire netting auxiliary power supply, battery auxiliary power supply, relay circuit and microprocessor, wherein, a set of electric wire netting input GRID is connected to electric wire netting auxiliary power supply, and this electric wire netting auxiliary power supply is used for supplying power to battery auxiliary power supply and lithium battery activation circuit provides the activation source, battery auxiliary power supply is used for supplying power to microprocessor and main circuit, the activation source is connected to the lithium battery through lithium battery activation circuit, and another set of electric wire netting input GRID divide into two-way output after passing through relay circuit, and one output is connected to alternating current output, and another output is connected to main circuit, main circuit one end is connected to the lithium battery. According to the invention, the lithium battery activation circuit is combined with the auxiliary power supply to independently control the lithium battery activation function, so that the charging management is more intelligent, and the system operation is more stable.
Description
Technical Field
The invention relates to the technical field of inverters, in particular to an inverter activated lithium battery device with a protection function and a control method thereof.
Background
In the prior art, the inverter activated lithium battery device generally adopts a main power activation mode, and the main power activation mode has the problems of overcharging of a battery terminal, high failure rate, low reliability, high cost of power devices and circuits which are extremely easy to damage when the battery terminal is short-circuited or abnormal, and the like. An effective method for solving the problem is to add a lithium battery activating device to combine with an auxiliary power supply to independently control the lithium battery activating function.
Disclosure of Invention
The invention aims to provide an inverter activated lithium battery device with a protection function and a control method thereof, so as to overcome the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an inverter activation lithium cell device of area protect function, includes main circuit, lithium cell activation circuit, electric wire netting auxiliary power supply, battery auxiliary power supply, relay circuit and microprocessor, and wherein, a set of electric wire netting input GRID is connected to electric wire netting auxiliary power supply, and this electric wire netting auxiliary power supply is used for providing the activation source for battery auxiliary power supply and lithium cell activation circuit, battery auxiliary power supply is used for supplying power to microprocessor and main circuit, the activation source is connected to the lithium cell through lithium cell activation circuit, and another set of electric wire netting input GRID divide into two-way output after passing through relay circuit, and one output is connected to alternating current output, and another output is connected to main circuit, main circuit one end is connected to the lithium cell.
Further, the lithium battery activation circuit comprises a relay and a current limiting resistor which are connected in sequence.
Further, the relay circuit comprises an inversion relay, a power grid relay and an alternating current output relay, wherein the inversion relay is connected to the other end of the main circuit, the power grid relay is connected with one end of the inversion relay, one end of the alternating current output relay is connected between the inversion relay and the power grid relay, and the other end of the alternating current output relay is connected to the alternating current output BUCK-UP.
The invention also provides a control method for the inverter activated lithium battery device with the protection function, which is characterized by comprising the following steps:
s1, judging whether the conditions are met simultaneously by the microprocessor: a lithium battery mode, a battery terminal voltage less than 10V and a battery charging or discharging mode, if yes, entering a step S3, otherwise entering a step S2;
s2, the lithium battery activation circuit is forbidden to work;
s3, controlling a lithium battery activation circuit to wake up the lithium battery;
s4, judging whether the voltage of the battery terminal is increased and smaller than a given value, if so, entering a step S6, otherwise, entering a step S5;
s5, stopping activation when the battery end fails abnormally;
s6, judging whether the inverter is communicated with the lithium battery, if so, entering a step S7, otherwise, returning to the step S3;
s7, judging whether the state of the lithium battery is normal, if so, closing a lithium battery activation circuit, otherwise, returning to the step S5;
s8, when the battery is in a discharging mode, the microprocessor is used for controlling the DC/DC converter to soft start the DC BUS, the power grid relay and the inverter relay are closed, grid-connected discharging is carried out through the DC/AC converter, when the battery is in a charging mode, the microprocessor is used for controlling the DC/DC converter to soft start the DC BUS, the power grid relay and the inverter relay are closed, and grid-connected charging is carried out through the DC/AC converter.
Compared with the prior art, the invention has the advantages that: according to the invention, the lithium battery activation circuit is combined with the auxiliary power supply to independently control the lithium battery activation function, so that the charging management is more intelligent, and the system operation is more stable; according to the invention, the lithium battery is activated by the lithium battery activation circuit, so that the occurrence of faults of a main circuit functional module is reduced, the problem that a battery end is abnormally damaged is effectively solved, and the service life of the machine is prolonged; according to the invention, the lithium battery is activated by the lithium battery activation circuit, and the lithium battery supplies power for the main circuit to soft up the DC BUS, so that the external circuit of the soft up DC BUS is reduced, the soft up of the voltage of the DC BUS effectively avoids the impact current to the DC BUS capacitor through the DC/AC when the power grid relay is closed, the reliability of the machine is further improved, and the cost of the machine is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an inverter-activated lithium battery device with protection according to the present invention.
Fig. 2 is a flowchart of a control method of the inverter-activated lithium battery device with a protection function according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1, the invention further provides an inverter activated lithium battery device with a protection function, which comprises a main circuit, a lithium battery activation circuit, a power GRID auxiliary power supply, a battery auxiliary power supply, a relay circuit and a microprocessor, wherein one group of power GRID input GRID is connected to the power GRID auxiliary power supply, the power GRID auxiliary power supply is used for supplying power to the battery auxiliary power supply and the lithium battery activation circuit, a 60V activation source is used for supplying power to the microprocessor and the main circuit (each module circuit), the 60V activation source is connected to a 51.2V lithium battery through the lithium battery activation circuit, the other group of power GRID input GRID is divided into two output paths through the relay circuit, one output path is connected to an alternating current output BUCK-UP, the other output path is connected to the main circuit, and one end of the main circuit is connected to the 51.2V lithium battery. The whole system is characterized in that a microprocessor controls a lithium battery activation circuit, communication with the lithium battery is established through an RS485 hardware interface, a main circuit is further controlled, and a relay circuit realizes charging and discharging of the lithium battery.
The invention ensures that the charging wake-up is more intelligent and reliable, and the system operation is more stable; in addition, after the lithium battery is activated to establish communication, the information of the voltage, the current, the capacity, the faults and the like of the lithium battery are synchronized, so that the charging and discharging are more intelligent and reliable.
In this embodiment, the lithium battery activation circuit includes a relay and a current limiting resistor that are sequentially connected.
In this embodiment, the Relay circuit includes an inverter Relay INV Relay, a GRID Relay and an ac output Relay BUCK-UP Relay, the inverter Relay INV Relay is connected to the other end of the main circuit, the GRID Relay is connected to one end of the inverter Relay INV Relay, one end of the ac output Relay BUCK-UP Relay is connected between the inverter Relay INV Relay and the GRID Relay, and the other end of the ac output Relay BUCK-UP Relay is connected to the ac output BUCK-UP.
Referring to fig. 2, the present invention further provides a control method for the inverter activated lithium battery device with protection function, including:
step S1, the microprocessor judges whether the condition 1, the condition 2 and the condition 3 are met at the same time, if yes, the step S3 is entered, otherwise, the step S2 is entered (the condition 1 is a lithium battery mode; the condition 2 is a battery terminal voltage less than 10V; the condition 3 is a battery charging or discharging mode);
s2, the lithium battery activation circuit is forbidden to work;
s3, controlling a lithium battery activation circuit to wake up the lithium battery;
step S4, judging whether the voltage of the battery terminal is increased and smaller than a given value, if so, entering a step S6, otherwise, entering a step S5;
s5, stopping activation due to abnormal faults of the battery end;
step S6, judging whether the inverter is communicated with the lithium battery, if so, entering a step S7, otherwise, returning to the step S3;
step S7, judging whether the state of the lithium battery is normal, if so, closing the lithium battery activation circuit, otherwise, returning to the step S5;
and S8, when the battery is in a battery discharging mode, controlling the DC/DC converter to soft up the DC BUS by the microprocessor, closing the GRID Relay and the INV Relay, then performing GRID-connected discharging by the DC/AC converter, and when the battery is in a battery charging mode, controlling the DC/DC converter to soft up the DC BUS by the microprocessor, closing the GRID Relay and the INV Relay, and then performing GRID-connected charging by the DC/AC converter.
According to the invention, the lithium battery activation circuit is combined with the auxiliary power supply to independently control the lithium battery activation function, so that the charging management is more intelligent, and the system operation is more stable; according to the invention, the lithium battery is activated by the lithium battery activation circuit, so that the occurrence of faults of a main circuit functional module is reduced, the problem that a battery end is abnormally damaged is effectively solved, and the service life of the machine is prolonged; according to the invention, the lithium battery is activated by the lithium battery activation circuit, and the lithium battery supplies power for the main circuit to soft up the DC BUS, so that the external circuit of the soft up DC BUS is reduced, the soft up of the voltage of the DC BUS effectively avoids the impact current to the DC BUS capacitor through the DC/AC when the power grid relay is closed, the reliability of the machine is further improved, and the cost of the machine is reduced.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the invention as described in the claims.
Claims (4)
1. The inverter activated lithium battery device with the protection function is characterized by comprising a main circuit, a lithium battery activation circuit, a power GRID auxiliary power supply, a battery auxiliary power supply, a relay circuit and a microprocessor, wherein one group of power GRID input GRID is connected to the power GRID auxiliary power supply, the power GRID auxiliary power supply is used for supplying power to the battery auxiliary power supply and supplying power to the lithium battery activation circuit, the battery auxiliary power supply is used for supplying power to the microprocessor and the main circuit, the activation source is connected to the lithium battery through the lithium battery activation circuit, the other group of power GRID input GRID is divided into two paths of output after passing through the relay circuit, one path of output is connected to an alternating current output, the other path of output is connected to the main circuit, and one end of the main circuit is connected to the lithium battery.
2. The inverter-activated lithium battery device with protection function according to claim 1, wherein: the lithium battery activation circuit comprises a relay and a current limiting resistor which are sequentially connected.
3. The inverter-activated lithium battery device with protection function according to claim 1, wherein: the relay circuit comprises an inversion relay, a power grid relay and an alternating current output relay, wherein the inversion relay is connected to the other end of the main circuit, the power grid relay is connected with one end of the inversion relay, one end of the alternating current output relay is connected between the inversion relay and the power grid relay, and the other end of the alternating current output relay is connected to the alternating current output BUCK-UP.
4. A control method for the inverter-activated lithium battery device with a protection function as set forth in any one of claims 1 to 3, characterized by comprising:
s1, judging whether the conditions are met simultaneously by the microprocessor: a lithium battery mode, a battery terminal voltage less than 10V and a battery charging or discharging mode, if yes, entering a step S3, otherwise entering a step S2;
s2, the lithium battery activation circuit is forbidden to work;
s3, controlling a lithium battery activation circuit to wake up the lithium battery;
s4, judging whether the voltage of the battery terminal is increased and smaller than a given value, if so, entering a step S6, otherwise, entering a step S5;
s5, stopping activation when the battery end fails abnormally;
s6, judging whether the inverter is communicated with the lithium battery, if so, entering a step S7, otherwise, returning to the step S3;
s7, judging whether the state of the lithium battery is normal, if so, closing a lithium battery activation circuit, otherwise, returning to the step S5;
s8, when the battery is in a discharging mode, the microprocessor is used for controlling the DC/DC converter to soft start the DC BUS, the power grid relay and the inverter relay are closed, grid-connected discharging is carried out through the DC/AC converter, when the battery is in a charging mode, the microprocessor is used for controlling the DC/DC converter to soft start the DC BUS, the power grid relay and the inverter relay are closed, and grid-connected charging is carried out through the DC/AC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310230546.5A CN116247771B (en) | 2023-03-11 | 2023-03-11 | Inverter activated lithium battery device with protection function and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310230546.5A CN116247771B (en) | 2023-03-11 | 2023-03-11 | Inverter activated lithium battery device with protection function and control method thereof |
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| CN116247771A true CN116247771A (en) | 2023-06-09 |
| CN116247771B CN116247771B (en) | 2023-11-21 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633727A (en) * | 2013-12-10 | 2014-03-12 | 惠州天能源科技有限公司 | Hybrid electric photovoltaic accumulation system inversion control all-in-one machine |
| CN104979569A (en) * | 2015-06-18 | 2015-10-14 | 中国电子科技集团公司第十八研究所 | Device and method for raising loading transient voltage of zinc-silver reserve battery |
| US20160226254A1 (en) * | 2015-01-29 | 2016-08-04 | Cyboenergy, Inc. | Smart Renewable Power Generation System With Grid and DC Source Flexibility |
| KR20210024959A (en) * | 2019-08-26 | 2021-03-08 | (주)코빅파워 | Power converting apparatus of fuel cell system robust for power disturbance |
| CN212969141U (en) * | 2020-08-21 | 2021-04-13 | 广州菲利斯太阳能科技有限公司 | Shutdown commercial power rechargeable off-grid power frequency inverter |
| CN212969149U (en) * | 2020-08-18 | 2021-04-13 | 广州菲利斯太阳能科技有限公司 | Off-grid photovoltaic energy storage power frequency inverter for commercial power and photovoltaic awakening lithium battery |
| CN213305004U (en) * | 2020-08-26 | 2021-05-28 | 广州菲利斯太阳能科技有限公司 | Off-grid energy storage power frequency inverter awakened by lithium battery |
| CN215300200U (en) * | 2021-05-16 | 2021-12-24 | 广州菲利斯太阳能科技有限公司 | Circuit of compatible different voltage lithium batteries of power frequency inverter |
| CN115241959A (en) * | 2022-02-25 | 2022-10-25 | 南京熊猫电子股份有限公司 | Maintenance-free energy storage power supply capable of automatically charging and activating lithium battery pack and control method thereof |
-
2023
- 2023-03-11 CN CN202310230546.5A patent/CN116247771B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633727A (en) * | 2013-12-10 | 2014-03-12 | 惠州天能源科技有限公司 | Hybrid electric photovoltaic accumulation system inversion control all-in-one machine |
| US20160226254A1 (en) * | 2015-01-29 | 2016-08-04 | Cyboenergy, Inc. | Smart Renewable Power Generation System With Grid and DC Source Flexibility |
| CN104979569A (en) * | 2015-06-18 | 2015-10-14 | 中国电子科技集团公司第十八研究所 | Device and method for raising loading transient voltage of zinc-silver reserve battery |
| KR20210024959A (en) * | 2019-08-26 | 2021-03-08 | (주)코빅파워 | Power converting apparatus of fuel cell system robust for power disturbance |
| CN212969149U (en) * | 2020-08-18 | 2021-04-13 | 广州菲利斯太阳能科技有限公司 | Off-grid photovoltaic energy storage power frequency inverter for commercial power and photovoltaic awakening lithium battery |
| CN212969141U (en) * | 2020-08-21 | 2021-04-13 | 广州菲利斯太阳能科技有限公司 | Shutdown commercial power rechargeable off-grid power frequency inverter |
| CN213305004U (en) * | 2020-08-26 | 2021-05-28 | 广州菲利斯太阳能科技有限公司 | Off-grid energy storage power frequency inverter awakened by lithium battery |
| CN215300200U (en) * | 2021-05-16 | 2021-12-24 | 广州菲利斯太阳能科技有限公司 | Circuit of compatible different voltage lithium batteries of power frequency inverter |
| CN115241959A (en) * | 2022-02-25 | 2022-10-25 | 南京熊猫电子股份有限公司 | Maintenance-free energy storage power supply capable of automatically charging and activating lithium battery pack and control method thereof |
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| CN116247771B (en) | 2023-11-21 |
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