CN113013510A - Multi-power-supply composite series-connection formation and capacity grading equipment for lithium battery - Google Patents
Multi-power-supply composite series-connection formation and capacity grading equipment for lithium battery Download PDFInfo
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- CN113013510A CN113013510A CN202110339537.0A CN202110339537A CN113013510A CN 113013510 A CN113013510 A CN 113013510A CN 202110339537 A CN202110339537 A CN 202110339537A CN 113013510 A CN113013510 A CN 113013510A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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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
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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
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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
- H02J7/0068—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
- 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
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a multi-power supply composite serial formation and capacity-sharing device of lithium batteries, which comprises a formation main power supply module and more than two lithium battery formation bypass plates, wherein the formation main power supply module is connected with a formation control system in a control mode, two ends of the more than two lithium battery formation bypass plates after being connected in series are connected with the output end of the formation main power supply module, each lithium battery formation bypass plate is independently connected with a lithium battery cell to be formed, an MCU (microprogrammed control unit), a battery monitoring unit and a bypass switch circuit are arranged in each lithium battery formation bypass plate, the bypass switch circuit is connected with two ends of the lithium battery cell in parallel and used for switching on a bypass after the lithium batteries are in failure, and two ends of each lithium battery cell are also connected with an auxiliary power supply module which can provide independent constant. The invention can better ensure that the current and the voltage of the lithium battery cell are uniform during formation, and can greatly improve the consistency of the capacity of the lithium battery cell after formation.
Description
Technical Field
The invention relates to the technical field of lithium battery production, in particular to multi-power-supply composite serial-connection formation and capacity grading equipment for a lithium battery.
Background
In the production process of the lithium battery cell, formation equipment is required to be utilized to carry out formation treatment on the lithium battery cell. The formation refers to a process of activating internal positive and negative electrode substances in a certain charging and discharging mode, and improving the charging and discharging performance and the comprehensive performance of self-discharging, storage and the like of the lithium battery.
Formation equipment in the prior art generally uses a parallel power supply circuit to provide a constant current power supply to carry out formation processing on lithium battery cores, a plurality of lithium battery cores are connected with a power supply in parallel during processing, and the formation equipment can ensure the consistency of the capacity of the lithium battery cores produced in batches during formation only when the constant current power supply is high in precision, consistent with the specification of a warehouse location power line and consistent with charging and discharging time.
However, because each output channel of the constant-current power supply in the conventional formation equipment has inevitable differences, the voltage and current precision between the channels cannot be guaranteed to be completely consistent, the power lines between the channels cannot be guaranteed to be completely consistent, and the requirement for consistency of the battery cell capacity of the lithium battery during batch formation cannot be met by singly controlling the charging and discharging time, which needs to be continuously improved.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a multi-power-supply composite serial formation and capacity-sharing device for lithium batteries, wherein a lithium battery formation bypass board having an independent bypass switch circuit is serially connected to a main power output end of the formation device, each lithium battery formation bypass board is separately controlled and connected to a to-be-formed lithium battery cell, and each lithium battery cell is further connected in parallel to an auxiliary power module, the auxiliary power module can provide an independent constant-voltage charging power supply, the two power supplies are controlled and combined to better control current and voltage when each lithium battery cell is formed, so as to ensure that the current and the voltage are more uniform, and thus, the consistency of the capacity of the lithium battery cells after formation can be greatly improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-power supply composite series formation and capacity grading device for lithium batteries comprises a formation main power supply module and more than two lithium battery formation bypass plates, wherein the formation main power supply module is connected with a formation control system in a control mode, the more than two lithium battery formation bypass plates are connected in series, two ends of the bypass plates after being connected in series are connected with two output ends of the formation main power supply module, each lithium battery formation bypass plate is independently connected with a lithium battery cell to be formed in a control mode, the lithium battery formation bypass board is internally provided with an MCU main control unit, a battery monitoring unit and a bypass switch circuit, the MCU main control unit is respectively connected with the formation main power supply module, the battery monitoring unit and the bypass switch circuit in a control way, the battery monitoring unit is used for monitoring formation parameters of the battery core of the lithium battery and feeding back data to the MCU main control unit, the bypass switch circuit is connected with two ends of the lithium battery cell in parallel and is used for switching on a bypass after the lithium battery fails; and the two ends of each lithium battery cell are also connected with an auxiliary power supply module in a control manner, and the auxiliary power supply modules are used for providing independent constant-voltage charging power supplies and independent discharging circuits for each lithium battery cell.
Further, the bypass switch circuit comprises a first field effect transistor Q1, a second field effect transistor Q2 and a third field effect transistor Q3, the first field effect transistor Q1, the second field effect transistor Q2 and the third field effect transistor Q3 are respectively in control connection with the MCU main control unit, the first field effect transistor Q1, the second field effect transistor Q2 and the lithium battery cell are connected in series and then connected in parallel with the third field effect transistor Q3, and two ends of the circuit after being connected in parallel are respectively connected with the adjacent lithium battery formation bypass board interfaces.
Furthermore, an AC-DC conversion circuit, a DC-DC conversion module and a switching control circuit are arranged in the auxiliary power supply module, the switching control circuit is connected with the MCU main control unit in a control mode, and the switching control circuit is used for switching on or off the circuit connection of the auxiliary power supply module and the lithium battery cell.
Further, the DC-DC conversion module is configured to provide a constant voltage charging power supply of 5V2A-5V20A for the lithium battery cell.
Furthermore, a communication control circuit is arranged between each lithium battery formation bypass board and the formation main power supply module.
Furthermore, a communication control circuit is arranged between the auxiliary power supply module and the formation main power supply module.
Furthermore, the eight lithium battery formation bypass plates are connected in series to form a group, and each formation main power supply module simultaneously carries out charging and discharging treatment on eight lithium battery cores to be formed.
The invention has the following beneficial effects:
1. according to the invention, lithium battery formation bypass plates with independent bypass switch circuits are arranged in series at the output end of a formation main power supply module, each lithium battery formation bypass plate independently charges and discharges a lithium battery cell to be formed, each lithium battery cell is connected with an auxiliary power supply module in parallel, and the auxiliary power supply module can provide independent constant voltage power supply and independent discharge for each lithium battery cell; two formation main power supply modules are combined with the auxiliary power supply module through control, the current and the voltage of each lithium battery cell during formation can be better controlled, the current and the voltage are ensured to be more uniform and consistent, and therefore the consistency of the capacity of the lithium battery cells after formation can be greatly improved.
2. The MCU main control unit, the battery monitoring unit and the bypass switch circuit are arranged in the lithium battery formation bypass board, and the charging and discharging currents of the lithium battery cell are detected and controlled through the MCU main control unit and the battery monitoring unit, so that the charging and discharging currents are more uniform and consistent; when an abnormal condition occurs in the formation process of a certain lithium battery cell, the MCU main control unit in the lithium battery formation bypass board controls the bypass switch circuit to be switched on, and the lithium battery cell with a problem is cut off through the control circuit to be connected, so that the formation treatment of other lithium battery cells to be formed in the same series circuit is not influenced.
3. The first field effect transistor Q1, the second field effect transistor Q2 and the third field effect transistor Q3 which are connected with the MCU main control unit and the lithium battery cell are arranged in the bypass switch circuit, the switching-on and switching-off of the lithium battery cell during formation are accurately controlled by using the field effect transistors, current mutation peaks can be restrained during constant current charging or constant current discharging switching, and the switching control is stable.
4. The auxiliary power supply module is internally provided with the AC-DC conversion circuit, the DC-DC conversion module and the switching control circuit, the switching control circuit is in control connection with the MCU main control unit, and the circuit connection of the auxiliary power supply module and the lithium battery cell can be switched on or off according to the requirement, so that an independent constant voltage power supply and independent discharge can be conveniently and accurately supplied to each lithium battery cell, and the current and the voltage are more uniform and consistent during formation.
Drawings
FIG. 1 is a schematic block diagram of a multi-power composite serial chemical composition capacity grading device of a lithium battery of the present invention;
FIG. 2 is a schematic circuit diagram of a lithium battery formation bypass board and an auxiliary power module according to the present invention.
Description of reference numerals:
1. forming a main power supply module; 2. lithium is converted into a bypass board; 3. a lithium battery cell; 4. and an auxiliary power supply module.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
referring to fig. 1-2, a multi-power composite serial formation and capacity-grading device for lithium batteries comprises a formation main power module 1 connected with a formation control system in a control manner and more than two lithium battery formation bypass boards 2, wherein the more than two lithium battery formation bypass boards 2 are connected in series, two ends of the serial bypass boards are connected with two output ends of the formation main power module 1, each lithium battery formation bypass board 2 is independently controlled and connected with a lithium battery cell 3 to be formed, an MCU main control unit, a battery monitoring unit and a bypass switch circuit are arranged in each lithium battery formation bypass board 2, the MCU main control unit is respectively controlled and connected with the formation main power module 1, the battery monitoring unit and the bypass switch circuit, the battery monitoring unit is used for monitoring formation parameters of the lithium battery cell 3 and feeding back data to the MCU main control unit, the formation parameters comprise voltage, current, temperature and the like, and the bypass switch circuit is connected with two ends of the lithium battery cell 3 in parallel and is used for switching on a bypass after a lithium battery fails; the two ends of each lithium battery cell 3 are also connected with an auxiliary power supply module 4 in a control mode, and the auxiliary power supply modules 4 are used for providing each lithium battery cell 3 with an independent constant-voltage charging power supply and an independent discharging circuit.
Every lithium cellization becomes all to set up an MCU main control unit in the bypass board 2 and is used for controlling the switch-on and the cutting off of lithium cell electricity core 3, does not adopt a plurality of lithium cellizations to become the structure of a MCU main control unit control of bypass board 2 sharing, avoids appearing the problem that MCU main control unit damages need rewiring to all bypass boards when changing, and it is more convenient to adopt modular structure installation wiring and maintenance to change.
Become main power module 1 during the installation and lithium cellization become bypass board 2, lithium cell electricity core 3 separately installs, can will become main power module 1 and set up in the room temperature room, the integration of being convenient for sets up installation and management, lithium cellization becomes bypass board 2 and lithium cell electricity core 3 sets up in the high temperature room, when becoming MCU main control unit in bypass board 2, battery monitoring unit through the lithium cellization and gathering lithium cell electricity core 3 voltage, the sampling wire is shorter, can improve the precision of appearance voltage greatly.
The bypass switch circuit comprises a first field effect transistor Q1, a second field effect transistor Q2 and a third field effect transistor Q3, the first field effect transistor Q1, the second field effect transistor Q2 and the third field effect transistor Q3 are respectively connected with the MCU main control unit in a control mode, the first field effect transistor Q1, the second field effect transistor Q2 and the lithium battery electric core 3 are connected in series and then connected in parallel with the third field effect transistor Q3, and two ends of the circuit after being connected in parallel are respectively connected with the adjacent lithium battery formation bypass board 2 in an interface mode. The first field effect transistor Q1, the second field effect transistor Q2, and the third field effect transistor Q3 are all N-type field effect transistors.
When the specific circuit is connected, the drain and the source of the third field effect transistor Q3 are respectively connected with the input end and the output end of the lithium battery formation bypass board 2, the gates of the first field effect transistor Q1, the second field effect transistor Q2 and the third field effect transistor Q3 are connected with the MCU main control unit, the first field effect transistor Q1 and the second field effect transistor Q2 are reversely connected in series, and the drains of the first field effect transistor Q1 and the second field effect transistor Q2 are respectively connected with the input end of the lithium battery formation bypass board 2 and the anode of the lithium battery cell 3 after being connected in series, so that the first field effect transistor Q1, the second field effect transistor Q2 and the lithium battery cell 3 are connected in series and then connected in parallel with the third field effect transistor Q3, and the two ends of the circuit after being connected in parallel are respectively connected with the input end and the output end of the adjacent.
When the lithium battery cell 3 needs to be charged or the lithium battery cell 3 needs to be switched on, the MCU main control unit controls the first field effect transistor Q1 and the second field effect transistor Q2 to be turned on and controls the third field effect transistor Q3 to be turned off, and the current input by the formation main power supply module 1 sequentially passes through the input end of the lithium formation bypass board 2, the first field effect transistor Q1 and the second field effect transistor Q2 to charge the lithium battery cell 3. When a plurality of lithium cellization become bypass board 2 and establish ties, the electric current that lithium cellization becomes bypass board 2 output is followed every lithium cellization in proper order and is become 2 input inputs of bypass board, for 3 series connection charges of a plurality of lithium cell electric cores, guarantees that a plurality of lithium cell electric cores 3 of establishing ties become the even stability of electric current.
When lithium battery electric core 3 is fully charged or needs to cut off lithium battery electric core 3, MCU main control unit control first field effect transistor Q1 and the disconnection of second field effect transistor Q2, control third field effect transistor Q3 switches on, it flows through from third field effect transistor Q3 to become the electric current of main power module 1 output, cut lithium battery electric core 3, and do not influence the charging of other lithium battery electric cores 3, it supplies a plurality of lithium battery electric cores 3 to charge to realize one becomes main power module 1, can guarantee through the control current size that a plurality of lithium battery electric cores 3 of establishing ties become the even stability of electric current.
The auxiliary power supply module 4 is internally provided with an AC-DC conversion circuit, a DC-DC conversion module and a switching control circuit, the switching control circuit is connected with the MCU main control unit in a control way and controls the auxiliary power supply module 4 through the MCU main control unit, and the switching control circuit is used for switching on or off the circuit connection between the auxiliary power supply module 4 and the lithium battery cell 3; the structure of the switching control circuit refers to a bypass switch circuit, and corresponding transistors and other control switches are arranged in the switching control circuit.
By combining the auxiliary power supply module 4 with the formation main power supply module 1, on the basis of providing a stable constant current by the formation main power supply module 1, the defect that the voltage provided by the formation main power supply module 1 is possibly unstable when the formation main power supply module 1 is connected in series is overcome, and then a stable constant voltage is provided for the lithium battery cell 3, so that stable constant voltage and constant current can be provided; or the auxiliary power supply module 4 can be controlled to independently perform constant-voltage charging and discharging treatment on the lithium battery cell 3 according to the requirement; the auxiliary power supply module 4 can be disconnected when not needed; the formation effect of the formation equipment is ensured to be more balanced and stable, and the use is flexible and convenient.
The DC-DC conversion module is configured to provide a constant-voltage charging power supply of 5V2A-5V20A for the lithium battery cell 3. The auxiliary power supply module 4 can provide different constant voltage sources according to the specifications of different lithium battery electric cores 3, and voltage and current are more uniform and consistent when formation is ensured.
And a communication control circuit is arranged between each lithium battery formation bypass plate 2 and the formation main power supply module 1. And a communication control circuit is arranged between the auxiliary power supply module 4 and the formation main power supply module 1.
The eight lithium battery formation bypass plates 2 are connected in series to form a group, and each formation main power supply module 1 simultaneously carries out charging and discharging treatment on eight lithium battery cores 3 to be formed. Similarly, four, sixteen, thirty-two and the like can be connected in series to form a group, so that the installation, the use and the centralized management are facilitated.
The working principle of the invention is as follows: four, eight, sixteen or thirty-two lithium battery formation bypass plates 2 with the same quantity are serially connected and arranged at the output end of the formation main power supply module 1 according to requirements, each lithium battery formation bypass plate 2 is independently connected with a lithium battery cell 3 to be formed to be subjected to formation treatment, and two ends of each lithium battery cell 3 are also parallelly connected with an auxiliary power supply module 4 capable of providing an independent constant voltage source and independent discharge for the lithium battery cells 3, so that the voltages at two ends of the lithium battery cells 3 which are serially connected together and the current flowing through the cells are ensured to be more uniform and consistent than the traditional parallel formation circuit. When a certain lithium battery cell 3 to be formed is abnormal, the MCU main control unit in the lithium battery formation bypass board 2 controls the bypass switch circuit to be switched on, the lithium battery cell which is in a problem is cut off through the control circuit and is connected, and other lithium battery cells 3 to be formed in the same series circuit can not be influenced and can be continuously formed and processed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a compound serialization of many power supplies of lithium cell becomes partial volume equipment which characterized in that: the device comprises a formation main power supply module (1) and more than two lithium battery formation bypass plates (2) which are connected with a formation control system in a control way, wherein the more than two lithium battery formation bypass plates (2) are connected in series, two ends of the bypass plates after being connected in series are connected with two output ends of the formation main power supply module (1), each lithium battery formation bypass plate (2) is independently connected with a lithium battery cell (3) to be formed in a control way, the lithium battery formation bypass board (2) is internally provided with an MCU main control unit, a battery monitoring unit and a bypass switch circuit, the MCU main control unit is respectively connected with the formation main power supply module (1), the battery monitoring unit and the bypass switch circuit in a control way, the battery monitoring unit is used for monitoring formation parameters of a lithium battery core (3) and feeding back data to the MCU main control unit, the bypass switch circuit is connected with two ends of the lithium battery cell (3) in parallel and is used for switching on a bypass after the lithium battery fails; the two ends of each lithium battery cell (3) are also connected with an auxiliary power supply module (4) in a control mode, and the auxiliary power supply modules (4) are used for providing each lithium battery cell (3) with an independent constant-voltage charging power supply and an independent discharging circuit.
2. The multi-power-supply composite series-connection formation and capacity-sharing device for the lithium batteries as claimed in claim 1, wherein: the bypass switch circuit comprises a first field effect transistor Q1, a second field effect transistor Q2 and a third field effect transistor Q3, the first field effect transistor Q1, the second field effect transistor Q2 and the third field effect transistor Q3 are respectively connected with the MCU main control unit in a control mode, the first field effect transistor Q1, the second field effect transistor Q2 and the lithium battery electric core (3) are connected in parallel with the third field effect transistor Q3 after being connected in series, and two ends of the circuit after being connected in parallel are respectively connected with the adjacent lithium battery formation bypass board (2) in an interface mode.
3. The multi-power-supply composite series-connection formation and capacity-sharing device for the lithium batteries as claimed in claim 1, wherein: the auxiliary power supply module (4) is internally provided with an AC-DC conversion circuit, a DC-DC conversion module and a switching control circuit, the switching control circuit is connected with the MCU main control unit in a control mode, and the switching control circuit is used for switching on or off the circuit connection between the auxiliary power supply module (4) and the lithium battery cell (3).
4. The multi-power-supply composite series-connection formation and capacity-sharing device for the lithium batteries as claimed in claim 3, wherein: the DC-DC conversion module is used for providing a constant-voltage charging power supply of 5V2A-5V20A for the lithium battery cell (3).
5. The multi-power-supply composite series-connection formation and capacity-sharing device for the lithium batteries as claimed in claim 1, wherein: and a communication control circuit is arranged between each lithium battery formation bypass plate (2) and the formation main power supply module (1).
6. The multi-power-supply composite series-connection formation and capacity-sharing device for the lithium batteries as claimed in claim 1, wherein: and a communication control circuit is arranged between the auxiliary power supply module (4) and the formation main power supply module (1).
7. The multi-power-supply composite series-connection formation and capacity-grading device for the lithium batteries as claimed in claim 1 or 2, wherein: the eight lithium battery formation bypass plates (2) are connected in series to form a group, and each formation main power supply module (1) simultaneously carries out charging and discharging treatment on eight lithium battery cores (3) to be formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110339537.0A CN113013510A (en) | 2021-03-30 | 2021-03-30 | Multi-power-supply composite series-connection formation and capacity grading equipment for lithium battery |
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| CN202110339537.0A CN113013510A (en) | 2021-03-30 | 2021-03-30 | Multi-power-supply composite series-connection formation and capacity grading equipment for lithium battery |
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| CN202110339537.0A Pending CN113013510A (en) | 2021-03-30 | 2021-03-30 | Multi-power-supply composite series-connection formation and capacity grading equipment for lithium battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977439A (en) * | 2022-07-07 | 2022-08-30 | 东莞光亚智能科技有限公司 | Auxiliary power supply for series formation, series formation system and control method thereof |
| CN115986239A (en) * | 2023-03-20 | 2023-04-18 | 广汽埃安新能源汽车股份有限公司 | Cascade formation device |
| CN116047336A (en) * | 2023-03-27 | 2023-05-02 | 深圳市铂纳特斯自动化科技有限公司 | Battery formation monitoring method and device |
| WO2023077701A1 (en) * | 2021-11-08 | 2023-05-11 | 西安快舟机电科技有限公司 | Tray charging and discharging switching circuit |
| CN116231816A (en) * | 2023-05-10 | 2023-06-06 | 深圳和润达科技有限公司 | Cut-in constant voltage protection circuit, control method and device and computer storage medium |
-
2021
- 2021-03-30 CN CN202110339537.0A patent/CN113013510A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023077701A1 (en) * | 2021-11-08 | 2023-05-11 | 西安快舟机电科技有限公司 | Tray charging and discharging switching circuit |
| CN114977439A (en) * | 2022-07-07 | 2022-08-30 | 东莞光亚智能科技有限公司 | Auxiliary power supply for series formation, series formation system and control method thereof |
| CN115986239A (en) * | 2023-03-20 | 2023-04-18 | 广汽埃安新能源汽车股份有限公司 | Cascade formation device |
| CN116047336A (en) * | 2023-03-27 | 2023-05-02 | 深圳市铂纳特斯自动化科技有限公司 | Battery formation monitoring method and device |
| CN116231816A (en) * | 2023-05-10 | 2023-06-06 | 深圳和润达科技有限公司 | Cut-in constant voltage protection circuit, control method and device and computer storage medium |
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