CN109510260B - Charging and discharging control circuit of lithium battery pack - Google Patents
Charging and discharging control circuit of lithium battery pack Download PDFInfo
- Publication number
- CN109510260B CN109510260B CN201811389864.1A CN201811389864A CN109510260B CN 109510260 B CN109510260 B CN 109510260B CN 201811389864 A CN201811389864 A CN 201811389864A CN 109510260 B CN109510260 B CN 109510260B
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- China
- Prior art keywords
- direct
- lithium battery
- battery pack
- direct current
- charging
- 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.)
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Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 54
- 238000007599 discharging Methods 0.000 title claims description 7
- 239000000178 monomer Substances 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- H02J7/0026—
-
- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting 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
- 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
-
- H02J7/027—
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- 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
Abstract
The invention discloses a charge-discharge control circuit of a lithium battery pack, which comprises a rectification inversion module, the lithium battery pack and a charge-discharge module, wherein the charge-discharge module is used for connecting the lithium battery pack and the rectification inversion module and comprises a direct current contactor, a direct current charger, a Hall sensor, a controller and a non-return diode; the cathode of the non-return diode is connected with the anode of the direct-current end of the rectification inversion module, and the anode of the non-return diode is connected with the Hall sensor and the lithium battery in series and then is connected with the cathode of the direct-current end of the rectification inversion module; the wire inlet end of the direct current charger is connected with the direct current end of the rectification inversion module in a bridging way through a direct current contactor, the positive electrode of the charging end of the direct current charger is connected with the positive electrode of the non-return diode, and the negative electrode of the charging end of the direct current charger is connected with the negative electrode of the rectification inversion module; the controller is respectively and electrically connected with each monomer of the lithium battery pack, the Hall sensor, the direct-current charger and the direct-current contactor, and is used for receiving signals of each monomer of the lithium battery pack and the Hall sensor so as to control the direct-current contactor and adjust the charging current of the direct-current charger.
Description
Technical Field
The invention relates to the technical field of continuous power supply energy, in particular to a charge and discharge control circuit of a lithium battery pack.
Background
The uninterrupted power supply is characterized in that a storage battery is connected with a rectification inversion module, and direct current is converted into commercial power through the rectification inversion module so as to provide stable and uninterrupted power supply for a single computer, a computer network system or other power electronic equipment such as an electromagnetic valve, a pressure transmitter and the like; when the mains supply is normally input, the uninterruptible power supply is used for stabilizing the voltage of the mains supply and supplying the stabilized voltage to a load, and the uninterruptible power supply is an alternating current type voltage stabilizer and charges a battery in the machine; when the commercial power is interrupted (accident power failure), the uninterrupted power supply immediately supplies 220V alternating current to the load in a conversion mode of the rectification inversion module, so that the load keeps normal work and soft and hardware of the load are protected from damage.
In the prior art, a battery commonly used by an uninterruptible power supply mainly adopts a lead-acid battery pack and a lithium battery pack, when the lead-acid battery pack is adopted, the lead-acid battery pack can be directly connected with a rectification inversion module, the lead-acid battery is charged in a uniform floating charging mode, and when the lead-acid battery is required to be discharged, the direct-current end of the rectification inversion module is discharged; when the lithium battery pack is adopted, the controller is required to manage the charging voltage, the temperature and the like of the lithium battery pack during charging, so that an external charger is required to charge the lithium battery pack.
However, the above technical solution still has drawbacks: because the lithium battery pack needs the controller to manage charging voltage, temperature and the like in the charging process, and an external direct current charger is needed to charge the lithium battery pack, the lithium battery pack cannot be directly connected with the rectification inversion module, and further a charging mode of uniform floating charging is realized.
In summary, the connection manner between the lithium battery pack and the rectifying inverter module in the prior art needs to be improved.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks or problems occurring in the prior art, and providing a charge-discharge control circuit for a lithium battery pack, so that the lithium battery pack can directly replace a lead-acid battery pack.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the charge-discharge control circuit of the lithium battery pack comprises a rectification inversion module, the lithium battery pack and a charge-discharge module, wherein the charge-discharge module is used for connecting the lithium battery pack and the rectification inversion module; the charging and discharging module comprises a direct current contactor, a direct current charger, a Hall sensor, a controller and a non-return diode; the cathode of the non-return diode is connected with the anode of the direct-current end of the rectification inversion module, and the anode of the non-return diode is connected with the Hall sensor and the lithium battery in series and then is connected with the cathode of the direct-current end of the rectification inversion module; the wire inlet end of the direct current charger is connected with the direct current end of the rectification inversion module in a bridging way through a direct current contactor, the positive electrode of the charging end of the direct current charger is connected with the positive electrode of the non-return diode, and the negative electrode of the charging end of the direct current charger is connected with the negative electrode of the rectification inversion module; the controller is respectively and electrically connected with each monomer of the lithium battery pack, the Hall sensor, the direct-current charger and the direct-current contactor, and is used for receiving signals of each monomer of the lithium battery pack and the Hall sensor so as to control the direct-current contactor and adjust the charging current of the direct-current charger.
From the above description of the present invention, compared with the prior art, the present invention has the following advantages:
1. through setting up the charge-discharge module for the controller can be through managing the charge current of direct current charger, with the realization rectification contravariant module direct current section to the charging of lithium cell group, and can control direct current contactor disconnection when charging unusual, so that the lithium cell group can realize the charge of the even float mode through the direct current end of rectification contravariant module, and need not charge with the help of external charger.
2. Through setting up the contrary diode for the charge-discharge module between lithium cell group and the rectification contravariant module can be separated, hall sensor promptly, lithium cell group and rectification contravariant module concatenate and form the return circuit that discharges, and the inlet wire end of direct current machine is connected in the direct current end of rectification contravariant module through direct current contactor cross-over connection, and the positive pole of its charging end is connected with the positive pole of contrary diode, and the negative pole of its charging end is connected with the negative pole of rectification contravariant module in order to form the return circuit that charges, and in this way, can make the return circuit that discharges be in the state of preparation all the time, and then guarantees the continuity and the reliability of lithium cell group discharge.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic circuit connection diagram of an uninterruptible power supply according to the present invention.
The main reference numerals illustrate:
the lithium battery pack comprises a rectification inversion module 1, a lithium battery pack 2, a direct current contactor 3, a direct current charger 4, a Hall sensor 5, a controller 6, a non-return diode D7, a fuse 8 and a direct current breaker 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.
In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.
In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.
Referring to fig. 1, fig. 1 shows a schematic circuit connection diagram of a charge-discharge control circuit of a lithium battery pack according to the present invention, which includes a rectifying and inverting module 1, a lithium battery pack 2, and a charge-discharge module.
The charging and discharging module comprises a direct current contactor 3, a direct current charger 4, a Hall sensor 5, a controller 6, a non-return diode D7, a fuse 8 and a direct current breaker 9.
The cathode of the non-return diode D7 is connected with the positive electrode of the direct-current end of the rectification inversion module 1, and the anode of the non-return diode D is connected with the Hall sensor 5 and the lithium battery in series and then is connected with the negative electrode of the direct-current end of the rectification inversion module 1;
the incoming line end of the direct current charger 4 is connected with the direct current end of the rectification inversion module 1 in a bridging way through the direct current contactor 3, the positive electrode of the charging end of the direct current charger is connected with the positive electrode of the non-return diode D7, and the negative electrode of the charging end of the direct current charger is connected with the negative electrode of the rectification inversion module 1;
the controller 6 is respectively and electrically connected with each single body of the lithium battery pack 2, the Hall sensor 5, the direct current charger 4 and the direct current contactor 3;
further, the dc end of the rectifying inverter module 1 may be further connected in series with the fuse 8 and the dc breaker 9, so as to further improve the safety of the charging process of the lithium battery pack 2.
When a load charges a lithium battery through the rectification inversion module 1, current flows into the direct current breaker 9, the fuse 8, the direct current contactor 3, the direct current charger 4, the Hall sensor 5 and the lithium battery pack 2 from the positive electrode of the direct current end of the rectification inversion module 1 in sequence to form a charging loop;
when the lithium battery pack 2 discharges the load through the rectification inversion module 1, current flows from the positive electrode of the lithium battery pack 2 into the hall sensor 5, the non-return diode D7 and the rectification inversion module 1 in order to form a discharge loop.
In the actual working process, since the controller 6 is electrically connected with the direct current contactor 3, the direct current charger 4, the Hall sensor 5 and the lithium battery pack 2, the Hall sensor 5 can detect the total charging current and total charging voltage of the lithium battery pack 2 and the voltage and temperature of each single lithium battery, and transmits signals to the controller 6;
the controller 6 controls the charge and discharge states of the lithium battery pack 2 through data processing of the signals, and when the lithium battery pack 2 needs to be charged, the controller 6 controls the direct current contactor 3 to be closed and limits the charging current of the direct current charger 4 so as to prevent potential safety hazards of overload of the lithium battery pack 2 in the charging process;
when the lithium battery pack 2 is discharged, the discharge loop and the charge loop are separated due to the arrangement of the backstop diode D7 in the discharge loop, and the discharge loop can be always in a ready state so as to ensure the continuity and reliability of the discharge process.
The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.
Claims (1)
1. The utility model provides a charge-discharge control circuit of lithium cell group, includes rectification contravariant module, its characterized in that: the lithium battery pack and the charging and discharging module are connected with each other, and the charging and discharging module is used for connecting the lithium battery pack with the rectifying and inverting module;
the charging and discharging module comprises a direct current contactor, a direct current charger, a Hall sensor, a controller and a non-return diode;
the cathode of the non-return diode is connected with the anode of the direct-current end of the rectification inversion module, and the anode of the non-return diode is connected with the Hall sensor and the lithium battery in series and then is connected with the cathode of the direct-current end of the rectification inversion module;
the wire inlet end of the direct current charger is connected with the direct current end of the rectification inversion module in a bridging way through a direct current contactor, the positive electrode of the charging end of the direct current charger is connected with the positive electrode of the non-return diode, and the negative electrode of the charging end of the direct current charger is connected with the negative electrode of the rectification inversion module;
the controller is respectively and electrically connected with each monomer of the lithium battery pack, the Hall sensor, the direct-current charger and the direct-current contactor, and is used for receiving signals of each monomer of the lithium battery pack and the Hall sensor so as to control the direct-current contactor and adjust the charging current of the direct-current charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389864.1A CN109510260B (en) | 2018-11-21 | 2018-11-21 | Charging and discharging control circuit of lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389864.1A CN109510260B (en) | 2018-11-21 | 2018-11-21 | Charging and discharging control circuit of lithium battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109510260A CN109510260A (en) | 2019-03-22 |
| CN109510260B true CN109510260B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389864.1A Active CN109510260B (en) | 2018-11-21 | 2018-11-21 | Charging and discharging control circuit of lithium battery pack |
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| Country | Link |
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| CN (1) | CN109510260B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978068A (en) * | 2016-05-26 | 2016-09-28 | 江苏深苏电子科技有限公司 | Charging and discharging management system of lithium battery |
| CN106532871A (en) * | 2016-12-31 | 2017-03-22 | 刘杰 | Charge and discharge control method for echelon lithium battery in communication base station |
| CN107064801A (en) * | 2016-11-30 | 2017-08-18 | 安徽安耐捷新能源科技有限公司 | A kind of charging and discharging lithium battery integration test cabinet based on sensor group |
| CN108110862A (en) * | 2017-11-29 | 2018-06-01 | 北京杉杉凯励新能源科技有限公司 | The charge-discharge control system of echelon lithium battery in communication base station |
| CN208890445U (en) * | 2018-11-21 | 2019-05-21 | 厦门海泰新能技术有限公司 | A kind of charge-discharge control circuit of lithium battery group |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090091295A1 (en) * | 2006-10-16 | 2009-04-09 | Wan Wei-Liang | Balanced charging/discharging circuit for lithium battery set |
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2018
- 2018-11-21 CN CN201811389864.1A patent/CN109510260B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978068A (en) * | 2016-05-26 | 2016-09-28 | 江苏深苏电子科技有限公司 | Charging and discharging management system of lithium battery |
| CN107064801A (en) * | 2016-11-30 | 2017-08-18 | 安徽安耐捷新能源科技有限公司 | A kind of charging and discharging lithium battery integration test cabinet based on sensor group |
| CN106532871A (en) * | 2016-12-31 | 2017-03-22 | 刘杰 | Charge and discharge control method for echelon lithium battery in communication base station |
| CN108110862A (en) * | 2017-11-29 | 2018-06-01 | 北京杉杉凯励新能源科技有限公司 | The charge-discharge control system of echelon lithium battery in communication base station |
| CN208890445U (en) * | 2018-11-21 | 2019-05-21 | 厦门海泰新能技术有限公司 | A kind of charge-discharge control circuit of lithium battery group |
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| Publication number | Publication date |
|---|---|
| CN109510260A (en) | 2019-03-22 |
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