CN203339265U - Current-expansion charging device for lithium battery formation - Google Patents
Current-expansion charging device for lithium battery formation Download PDFInfo
- Publication number
- CN203339265U CN203339265U CN2013203019956U CN201320301995U CN203339265U CN 203339265 U CN203339265 U CN 203339265U CN 2013203019956 U CN2013203019956 U CN 2013203019956U CN 201320301995 U CN201320301995 U CN 201320301995U CN 203339265 U CN203339265 U CN 203339265U
- Authority
- CN
- China
- Prior art keywords
- current
- constant current
- circuit
- charging
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a current-expansion charging device for lithium battery formation. The current-expansion charging device comprises multiple groups of constant current charging-discharging control circuits, wherein the rear end of each constant current charging-discharging control circuit is provided with a charging MOS (metal oxide semiconductor) tube and a discharging MOS tube; a sampling resistor is arranged on a high-voltage output line of each charging MOS tube; the two ends of each sampling resistor are connected with a current sampling and amplifying circuit; the feedback voltage Vf of each current sampling and amplifying circuit is connected with the signal feedback end of the corresponding constant current charging-discharging control circuit; each current sampling and amplifying circuit is mainly formed by connection of a differential amplifier and a gain adjustment circuit; the output end of the differential amplifier is connected with the low potential input end of a current amplifier gain adjuster; the high potential input end of a current amplifier gain adjustment circuit is grounded; the output end of the current amplifier gain adjustment circuit is connected with the signal feedback end of the corresponding constant current charging-discharging control circuit. The outputs of the multiple constant current charging-discharging control circuits can be connected in parallel as required to obtain multiple output currents.
Description
Technical field
The utility model belongs to technical field of lithium-ion battery, the expansion current charge device while relating to a kind of formation of Li-ion batteries.
Background technology
Changing into is the important procedure in the lithium ion battery production process, by the battery to just having made, carries out the pressure limiting constant current charge, in negative terminal surface, forms one deck passivation layer, and the solid electrolyte interface film, activate the electrochemical substance activity, makes battery enter electriferous state.
In formation process, the battery of different capabilities needs the forming currents of different sizes, and for example, 50AH needs 5A, and 200AH needs 20A.On a formation device, use a plurality of constant current charge-discharge control circuits to a plurality of lithium ion batteries are charged simultaneously.In existing equipment, the output current of constant current charge-discharge control circuit be think relatively-stationary, maximum is only 5A, surpassed 100AH in the situation that change into the capacity of lithium ion battery, because forming current is too little, can cause adverse effect to the characteristics such as internal resistance of battery during charging, existing formation device can not adapt to the requirement of production.
In prior art, in the constant current charge-discharge control circuit of formation device, the charging and discharging currents of battery, after current sampling resistor, becomes voltage signal Vf, sampling resistor is arranged on the low pressure output line of electric discharge metal-oxide-semiconductor, and voltage signal Vf feeds back to the constant current charge-discharge control circuit; The constant current charge-discharge control circuit is according to input control voltage Vi and voltage signal Vf, and the closed loop adjustment discharges and recharges the conducting state of metal-oxide-semiconductor, no matter how the voltage of battery changes with charge and discharge process, all keeps the constant of charging and discharging currents.This current detecting control mode, be called the low level current detecting.
Adopt the charging modes of low level current detecting, as directly by the parallel connection of several constant current charge-discharge control circuit output, to enlarge charging stream, battery is charged, can cause the current sampling resistor of each constant current charge-discharge control circuit to be directly parallel in together, circuit Zhong Mei road electric current will lose the independent function of controlling, can cause the seriously unbalanced of each road electric current, when serious, may cause the metal-oxide-semiconductor that discharges and recharges on a certain Lu Huoji road to burn.Therefore in prior art, the constant current charge-discharge control circuit of formation device, can not carry out charged in parallel to lithium battery.
Summary of the invention
For solving in prior art, the constant current charge-discharge control circuit of formation device, can not be enlarged to lithium battery the problem of the charged in parallel of charging current, the utility model is transformed existing equipment, provide a kind of formation of Li-ion batteries to expand the current charge device, this device is equipped with many group constant current charge-discharge control circuits at the output of Switching Power Supply, be separately installed with charging metal-oxide-semiconductor and electric discharge metal-oxide-semiconductor in each constant current charge-discharge control circuit rear end, sampling resistor is arranged on the high-voltage output line of charging metal-oxide-semiconductor, be parallel with the current sample amplifying circuit at the two ends of sampling resistor, the feedback signal output line of current sample amplifying circuit connects the signal feedback end of constant current charge-discharge control circuit, the current sample amplifying circuit mainly is formed by connecting by differential amplifier and current amplifier gain adjusting circuit, two signal input parts of differential amplifier connect the sampling resistor two ends, the electronegative potential input of output termination current amplifier gain adjusting circuit, the high potential input end grounding of the gain adjusting circuit of current amplifier, the signal feedback end of the output termination constant current charge-discharge control circuit of current amplifier gain adjusting circuit.
Adopt technique scheme, during the output line multi-channel parallel of constant current charge-discharge control circuit, the current sampling resistor on each road is all working alone, the independent current signal that gathers single channel, after the current sample amplifying circuit on You Ge road is processed respectively again, obtain the constant current charge-discharge control circuit feedback end that feedback signal voltage Vf delivers to each road.Like this, the output current on each road is controlled voltage Vi by it and is independently controlled, separate between each passage, does not interfere with each other, and the situation of Current Control confusion can not occur.
The current sample amplifier consists of differential amplifier and gain adjusting circuit.Differential amplifier, from the sampling resistor two ends, extracts the voltage signal that output current is corresponding and is processed, then carries out the error adjustment through the current amplifier gain adjusting circuit, and output Vf signal is to the constant current charge-discharge control circuit.The effect of current amplifier gain adjusting circuit is the error that compensation is brought by the resistance error of current sampling resistor.
Adopt technique scheme, can, as required by a plurality of constant current charge-discharge circuit output-parallels, obtain the output current of many times.Solve the problem changed into of high capacity cell, reached the raising utilization rate of equipment and installations, reduced the purpose of the wasting of resources.
The accompanying drawing explanation
The electrical block diagram that Fig. 1 is formation device in prior art.
Fig. 2 is constant current charge-discharge control circuit structural representation in prior art.
Fig. 3 is the utility model constant current charge-discharge control circuit structural representation.
Fig. 4 is the utility model multi-channel parallel constant current charge-discharge control circuit structural representation.
Fig. 5 is the utility model current sample amplifier circuit structural representation.
Embodiment
Embodiment: as shown in Fig. 3, Fig. 4 and Fig. 5, a kind of formation of Li-ion batteries expands the current charge device, this device is equipped with many group constant current charge-discharge control circuits at the output of Switching Power Supply, be separately installed with charging metal-oxide-semiconductor and electric discharge metal-oxide-semiconductor in each constant current charge-discharge control circuit rear end, sampling resistor is arranged on the high-voltage output line of charging metal-oxide-semiconductor, be parallel with the current sample amplifying circuit at the two ends of sampling resistor, the feedback signal output line of current sample amplifying circuit connects the signal feedback end of constant current charge-discharge control circuit; The current sample amplifying circuit mainly is formed by connecting by differential amplifier and current amplifier gain adjusting circuit, two signal input parts of differential amplifier connect the sampling resistor two ends, the electronegative potential input of output termination current amplifier gain adjusting circuit, the high potential input end grounding of the gain adjusting circuit of current amplifier, the signal feedback end of the output termination constant current charge-discharge control circuit of current amplifier gain adjusting circuit.
Claims (1)
1. formation of Li-ion batteries expands the current charge device, this device is equipped with many group constant current charge-discharge control circuits at the output of Switching Power Supply, be separately installed with charging metal-oxide-semiconductor and electric discharge metal-oxide-semiconductor in each constant current charge-discharge control circuit rear end, it is characterized in that: sampling resistor is arranged on the high-voltage output line of charging metal-oxide-semiconductor, be parallel with the current sample amplifying circuit at the two ends of sampling resistor, the feedback signal output line of current sample amplifying circuit connects the signal feedback end of constant current charge-discharge control circuit; The current sample amplifying circuit mainly is formed by connecting by differential amplifier and current amplifier gain adjusting circuit, two signal input parts of differential amplifier connect the sampling resistor two ends, the electronegative potential input of output termination current amplifier gain adjusting circuit, the high potential input end grounding of the gain adjusting circuit of current amplifier, the signal feedback end of the output termination constant current charge-discharge control circuit of current amplifier gain adjusting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203019956U CN203339265U (en) | 2013-05-29 | 2013-05-29 | Current-expansion charging device for lithium battery formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203019956U CN203339265U (en) | 2013-05-29 | 2013-05-29 | Current-expansion charging device for lithium battery formation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203339265U true CN203339265U (en) | 2013-12-11 |
Family
ID=49707925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203019956U Expired - Lifetime CN203339265U (en) | 2013-05-29 | 2013-05-29 | Current-expansion charging device for lithium battery formation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203339265U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017851A (en) * | 2016-01-28 | 2017-08-04 | 江苏省电力公司南京供电公司 | A kind of current power amplifying circuit |
| CN116930800A (en) * | 2023-09-18 | 2023-10-24 | 湖南恩智测控技术有限公司 | Fuel cell impedance measuring device and method |
| CN117420422A (en) * | 2023-12-18 | 2024-01-19 | 赛英特半导体技术(西安)有限公司 | VI source current expansion method, circuit and VI source |
-
2013
- 2013-05-29 CN CN2013203019956U patent/CN203339265U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017851A (en) * | 2016-01-28 | 2017-08-04 | 江苏省电力公司南京供电公司 | A kind of current power amplifying circuit |
| CN116930800A (en) * | 2023-09-18 | 2023-10-24 | 湖南恩智测控技术有限公司 | Fuel cell impedance measuring device and method |
| CN116930800B (en) * | 2023-09-18 | 2023-12-19 | 湖南恩智测控技术有限公司 | Fuel cell impedance measuring device and method |
| CN117420422A (en) * | 2023-12-18 | 2024-01-19 | 赛英特半导体技术(西安)有限公司 | VI source current expansion method, circuit and VI source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108777339B (en) | Pulse discharge self-heating method and device for lithium ion battery | |
| WO2017030309A1 (en) | Method for predicting battery charge limit, and method and apparatus for rapidly charging battery using same | |
| CN102801184B (en) | A kind of batteries management system | |
| WO2021077813A1 (en) | Electronic device, charging method, and charging system | |
| WO2021043225A1 (en) | Charging control method and charging control apparatus | |
| CN105449788A (en) | Charging protection circuit | |
| CN203339265U (en) | Current-expansion charging device for lithium battery formation | |
| KR20190054513A (en) | Battery charging method and battery charging apparatus | |
| CN101312297B (en) | Power supply apparatus for pulse charging of accumulator | |
| KR102439689B1 (en) | Battery charging method and battery charging apparatus | |
| CN109193863A (en) | Battery voltage balance control method and circuit | |
| CN106329594B (en) | Device and method for limiting current during charging of battery of energy storage system | |
| CN203241519U (en) | Voltage measurement circuit for single cells of lithium-ion power batteries | |
| CN105141004A (en) | Equalizing charging system for liquid state metal battery | |
| CN108808819B (en) | Lithium electricity energy storage and power preparation system | |
| CN105048573A (en) | Circuit for realizing full-cycle charging and discharging of different battery packs | |
| CN102723745B (en) | Battery pack management system | |
| CN105743188B (en) | Lead-acid battery group protects system | |
| CN114825511A (en) | Charge-discharge balancing device with new energy automobile battery pack monitoring system | |
| CN203522276U (en) | Charging and discharging control circuit for lithium battery | |
| CN101364742B (en) | Lithium battery charger controlling integrated circuit and constant-current constant-voltage control circuit thereof | |
| CN201243213Y (en) | Pulse charging power supply device for accumulator | |
| CN204794196U (en) | Balanced control system of group battery initiative | |
| CN204721044U (en) | With the battery charger of current limiting | |
| CN103178584A (en) | Lithium ion battery energy equalizing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUNNAN NENGTOU HUILONG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YANG YONGPING Effective date: 20140909 Free format text: FORMER OWNER: YANG CHENGYUN Effective date: 20140909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140909 Address after: 653103 Daying street, Hongta District, Yunnan, Yuxi Patentee after: YUNNAN NENGTOU HUILONG TECHNOLOGY Co.,Ltd. Address before: 653103 Yuxi City, Yunnan province Hongta District Camp Street Industrial Zone Yunnan Yuxi Huilong Technology Co. Ltd. Patentee before: Yang Yongping Patentee before: Yang Chengyun |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yunnan Yuxi Huilong Technology Co.,Ltd. Assignor: YUNNAN NENGTOU HUILONG TECHNOLOGY Co.,Ltd. Contract record no.: 2014530000103 Denomination of utility model: Current-expansion charging device for lithium battery formation Granted publication date: 20131211 License type: Exclusive License Record date: 20140930 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Yunnan Yuxi Huilong Technology Co.,Ltd. Assignor: YUNNAN NENGTOU HUILONG TECHNOLOGY Co.,Ltd. Contract record no.: 2014530000103 Date of cancellation: 20150331 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |