CN103795124A - Control system for realizing parallel-connection circulating charging of multiple sets of lithium batteries and method thereof - Google Patents
Control system for realizing parallel-connection circulating charging of multiple sets of lithium batteries and method thereof Download PDFInfo
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- CN103795124A CN103795124A CN201410056812.8A CN201410056812A CN103795124A CN 103795124 A CN103795124 A CN 103795124A CN 201410056812 A CN201410056812 A CN 201410056812A CN 103795124 A CN103795124 A CN 103795124A
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Abstract
The invention provides a control system for realizing parallel-connection circulating charging of multiple sets of lithium batteries and a method of the control system. The control system at least comprises a charger, the multiple sets of lithium batteries, a charging loop and a communication line set, wherein the multiple sets of lithium batteries and the charger are connected in parallel through the charging loop, and the charger communicates with each lithium battery through the communication line set. The control system for realizing parallel-connection circulating charging of the multiple sets of lithium batteries and the method of the control system can guarantee that each set of lithium batteries is fully charged with electricity under an unattended condition, can obviously reinforce the durability of the lithium batteries, prolong the recycling service life of the battery packs, and meanwhile obviously improve the utilization rate of the charger on the premise of not increasing the control complexity of a charging system and development cost.
Description
Technical field
The present invention relates to a kind of control system and method thereof of battery charging, particularly relate to a kind of control system and method thereof that realizes the charging of many group lithium battery parallel circulatings.
Background technology
Along with the development of microelectric technique, compact apparatus is increasing, therefore used power supply is had higher requirement.The advantages such as lithium battery has that energy is higher, long service life, rated voltage is high, high power holding capacity is strong, self-discharge rate is low, lightweight, environmental protection, thereby be widely used on the compact apparatus such as mobile phone, notebook computer, electric motor car.Correspondingly, need to provide one more efficiently, lithium cell charging method faster.
At present, the charging modes of lithium battery is mainly to charge for a lithium battery.If to many lithium cell chargings of single group, substantially adopts series system, and cannot charge to many groups lithium battery of similar parallel connection, and the utilization rate of charger is very low.In addition, in prior art, to many groups lithium battery, parallel connection is charged and conventionally need to be increased extra circuit control unit and control not the charging voltage of lithium battery on the same group or realize the time-sharing charging control between many group lithium batteries.No matter control not on the same group the charging voltage of lithium battery or control the time-sharing charging between many group lithium batteries, all having increased complexity and the development cost of charging system control.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of control system and method thereof that realizes the charging of many group lithium battery parallel circulatings, its charging control characteristic in conjunction with lithium battery itself and lithium battery management system (Battery Management System, BMS), realized many groups lithium battery has been carried out to parallel circulating charging.
For achieving the above object and other relevant objects, the invention provides a kind of control system that realize the charging of many group lithium battery parallel circulatings, at least comprise: charger, organize lithium battery, charge circuit and communication line group more; Wherein, described many group lithium batteries are connected on described charger parallel with one another by described charge circuit, and described charger communicates by described communication line group and each lithium battery; Charger detects after new lithium battery connecting system, and described charger detects currently on charging bus whether have the lithium battery charging, if do not exist, the lithium battery of new access enters charged state; If exist, the lithium battery of new access enters wait charged state, and after treating that the lithium cell charging charging completes, the lithium battery of new access enters charged state.
Organize the control system of lithium battery parallel circulating charging according to above-mentioned realization, wherein: described communication line group adopts wired or wireless mode more.
Organize the control system of lithium battery parallel circulating charging more according to above-mentioned realization, wherein: described charger has multiple charging inlets, can make many group lithium batteries access charger system simultaneously.
Organize the control system of lithium battery parallel circulating charging according to above-mentioned realization, wherein: on described lithium battery, comprise charging control switch, described charging control switch acquiescence disconnects more.
Meanwhile, the present invention also provides a kind of control method that realizes the charging of many group lithium battery parallel circulatings, and it comprises the following steps:
Step S1: charger detects after new lithium battery connecting system, sets up communication be connected with each lithium battery BMS management system;
Step S2: charger reads the relevant information of lithium battery from lithium battery BMS management system, and wherein, described relevant information comprises the information of voltage of lithium battery;
Step S3: charger detects whether charging is current on bus exists the lithium battery charging, if do not exist, proceeds to step S4, and the lithium battery of new access enters charged state; If exist, proceed to step S5, the lithium battery of new access enters wait charged state;
Step S4: charger regulates the output voltage of charger according to the cell voltage of the lithium battery that reads new access, and send the lithium battery of charging controlling command to new access, make it enter charged state;
Step S5: charger keeps the lithium battery of new access in waiting for charged state, after treating that the lithium battery charging is full of, charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, and send the lithium battery of charging controlling command to new access, make it enter charged state.
Organize the control method of lithium battery parallel circulating charging according to above-mentioned realization more, wherein: in step S1, in the time that charger detects new lithium battery connecting system, charger is set up communication by wireless or wired mode with each lithium battery BMS management system and is connected.
Organize the control method of lithium battery parallel circulating charging according to above-mentioned realization more, wherein: in step S4, charger regulates the output voltage of charger according to the cell voltage of the lithium battery of the new access reading, make the output voltage of charger lower than cell voltage, then send the lithium battery of charging controlling command to new access, notify its closed charging control switch, enter charged state.
Organize the control method of lithium battery parallel circulating charging according to above-mentioned realization, wherein: in step S5, after treating that the lithium battery charging is full of, charger sends and stops charging controlling command to the lithium battery charging, and notifies it to disconnect charging control switch more; Then charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, make the output voltage of charger lower than the cell voltage of the lithium battery of new access, and send charging controlling command to the new lithium battery accessing, notify its closed charging control switch, enter charged state.
Organize the control method of lithium battery parallel circulating charging according to above-mentioned realization more, wherein: in step S5, when charger has detected that many group lithium batteries are in the time waiting for charged state, charger is according to the remaining battery capacity of each group of lithium battery, preferentially the minimum lithium battery of residual capacity is charged, until all lithium batteries that are connected on charging bus are all full of.
Further, organize the control method of lithium battery parallel circulating charging according to above-mentioned realization, wherein: described charger is preserved the record of charging of every group of lithium battery more.
As mentioned above, control system and the method thereof of lithium battery parallel circulating charging organized in realization of the present invention more, has following beneficial effect:
(1) can realize in unattended situation, guarantee that every group of lithium battery can be full of, can significantly increase the flying power of lithium battery, extend the service life cycle of battery pack;
(2) improved significantly the utilization rate of charger;
(3) do not increase complexity and the development cost of charging system control.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of many group lithium battery parallel circulating charge control systems of the present invention;
Fig. 2 is shown as realization of the present invention and organizes the control method flow chart that lithium battery parallel circulating charges more.
Element numbers explanation
1 charger
21,22 ... 2N organizes lithium battery more
31,32 ... 3N charge circuit
41,42 ... 4N communication line group
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
With reference to Fig. 1, the control system of many group lithium battery parallel circulatings of the present invention charging comprise charger 1, organize lithium battery more (21,22 ... 2N), charge circuit (31,32 ... 3N) and communication line group (41,42 ... 4N).Wherein, organize more lithium battery (21,22 ... 2N) by charge circuit (31,32 ... 3N) be connected to parallel with one another on charger 1, charger 1 by communication line group (41,42 ... 4N) come to communicate with each lithium battery.
Charger 1 starts or stops charging, preferentially selects the minimum lithium battery of remaining battery capacity to charge according to the residual capacity of lithium battery for output voltage, the transmission control command notice lithium battery of control system.Charger has multiple charging inlets, can make many group lithium batteries access charger system simultaneously.
On lithium battery, comprise charging control switch, and acquiescence disconnects, can guarantee like this to access in charger system at lithium battery, can not occur over-charge of lithium battery phenomenon because of the difference of the current voltage of the output voltage of charger and lithium battery.Wherein, organize more lithium battery (21,22 ... every group of lithium battery 2N) managed by a BMS system.
Charge circuit (31,32 ... 3N) comprise charging connecting cable and the connector between charger 1 and lithium battery.Wherein, one end of connecting cable is fixed on charger 1, and the other end is connected with lithium battery by connector.
Communication line group is the communication channel between charger and lithium battery, can adopt wired or wireless mode.Charger carries out communication with each lithium battery as main frame respectively by different addresses.Communication modes between charger and lithium battery can adopt wired or wireless.Content of communciation is mainly battery capacity, cell voltage, battery charge, battery temperature, warning information and the parameter information that charger reads lithium battery.
As shown in Figure 2, the control method that lithium battery parallel circulating charging is organized in realization of the present invention more comprises the steps:
Step S1: charger detects after new lithium battery connecting system, sets up communication be connected with each lithium battery BMS management system.
Particularly, in the time that charger detects new lithium battery connecting system, charger is set up communication by wireless or wired mode with each lithium battery BMS management system and is connected.
Step S2: charger reads the relevant informations such as the cell voltage, battery remaining power, battery temperature of lithium battery from lithium battery BMS management system, and these information are kept to this locality.Wherein, battery temperature information is for the temperature-compensating processing procedure to battery.
Step S3: charger detects whether charging is current on bus exists the lithium battery charging, if do not exist, proceeds to step S4, and the lithium battery of new access enters charged state; If exist, proceed to step S5, the lithium battery of new access enters wait charged state.
Step S4: charger regulates the output voltage of charger according to the cell voltage of the lithium battery of the new access reading, and send the lithium battery of charging controlling command to new access, make it enter charged state.
Particularly, charger regulates the output voltage of charger according to the cell voltage reading, make the output voltage of charger a little less than cell voltage, to prevent over-charge of lithium battery phenomenon, then send charging controlling command, the closed charging control switch of notice lithium battery, enters charged state.Preferably, common output voltage=cell voltage-1.8V.
Step S5: charger keeps the lithium battery of new access in waiting for charged state, after treating that the lithium battery charging is full of, charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, and send the lithium battery of charging controlling command to new access, make it enter charged state.
Particularly, charger keeps the charging control switch of the lithium battery of new access to disconnect, and makes it in waiting for charged state.After treating that the lithium battery charging is full of, charger sends and stops charging controlling command to the lithium battery charging, and notifies it to disconnect charging control switch; Then charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, make the output voltage of charger a little less than cell voltage, to prevent over-charge of lithium battery phenomenon, and send charging controlling command to the new lithium battery accessing, notify its closed charging control switch, enter charged state.Preferably, common output voltage=cell voltage-1.8V.
In the present invention, organize lithium battery cycle charging more and refer to not the charging of the one after the other between lithium battery on the same group.If charger has detected that many group lithium batteries are in the time waiting for charged state, charger can be according to the remaining battery capacity of each group of lithium battery, preferentially the minimum lithium battery of residual capacity is charged, until all lithium batteries that are connected on charging bus are all full of.Charger is preserved the record of charging of every group of lithium battery simultaneously.
In sum, control system and method thereof that the charging of lithium battery parallel circulating is organized in realization of the present invention more can realize in unattended situation, guarantee that every group of lithium battery can be full of, can significantly increase the flying power of lithium battery, extend the service life cycle of battery pack; Do not increase under the complexity of charging system control and the prerequisite of development cost, improved significantly the utilization rate of charger simultaneously.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (10)
1. a control system for lithium battery parallel circulating charging is organized in realization more, it is characterized in that, at least comprises: charger, organize lithium battery, charge circuit and communication line group more; Wherein, described many group lithium batteries are connected on described charger parallel with one another by described charge circuit, and described charger communicates by described communication line group and each lithium battery;
Charger detects after new lithium battery connecting system, and described charger detects currently on charging bus whether have the lithium battery charging, if do not exist, the lithium battery of new access enters charged state; If exist, the lithium battery of new access enters wait charged state, and after treating that the lithium cell charging charging completes, the lithium battery of new access enters charged state.
2. the control system of lithium battery parallel circulating charging is organized in realization according to claim 1 more, it is characterized in that: described communication line group adopts wired or wireless mode.
3. the control system of lithium battery parallel circulating charging is organized in realization according to claim 1 more, it is characterized in that: described charger has multiple charging inlets, can make many group lithium batteries access charger system simultaneously.
4. the control system of lithium battery parallel circulating charging is organized in realization according to claim 1 more, it is characterized in that: on described lithium battery, comprise charging control switch, described charging control switch acquiescence disconnects.
5. a control method for lithium battery parallel circulating charging is organized in realization more, it is characterized in that: comprise the following steps:
Step S1: charger detects after new lithium battery connecting system, sets up communication be connected with each lithium battery BMS management system;
Step S2: charger reads the relevant information of lithium battery from lithium battery BMS management system, and wherein, described relevant information comprises the information of voltage of lithium battery;
Step S3: charger detects whether charging is current on bus exists the lithium battery charging, if do not exist, proceeds to step S4, and the lithium battery of new access enters charged state; If exist, proceed to step S5, the lithium battery of new access enters wait charged state;
Step S4: charger regulates the output voltage of charger according to the cell voltage of the lithium battery that reads new access, and send the lithium battery of charging controlling command to new access, make it enter charged state;
Step S5: charger keeps the lithium battery of new access in waiting for charged state, after treating that the lithium battery charging is full of, charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, and send the lithium battery of charging controlling command to new access, make it enter charged state.
6. the control method of lithium battery parallel circulating charging is organized in realization according to claim 5 more, it is characterized in that: in step S1, in the time that charger detects new lithium battery connecting system, charger is set up communication by wireless or wired mode with each lithium battery BMS management system and is connected.
7. the control method of lithium battery parallel circulating charging is organized in realization according to claim 5 more, it is characterized in that: in step S4, charger regulates the output voltage of charger according to the cell voltage of the lithium battery of the new access reading, make the output voltage of charger lower than cell voltage, then send the lithium battery of charging controlling command to new access, notify its closed charging control switch, enter charged state.
8. the control method of lithium battery parallel circulating charging is organized in realization according to claim 5 more, it is characterized in that: in step S5, after treating that the lithium battery charging is full of, charger sends and stops charging controlling command to the lithium battery charging, and notifies it to disconnect charging control switch; Then charger foundation reads the output voltage of the cell voltage adjusting charger of the lithium battery of new access, make the output voltage of charger lower than the cell voltage of the lithium battery of new access, and send charging controlling command to the new lithium battery accessing, notify its closed charging control switch, enter charged state.
9. the control method of lithium battery parallel circulating charging is organized in realization according to claim 5 more, it is characterized in that: in step S5, when charger has detected that many group lithium batteries are in the time waiting for charged state, charger is according to the remaining battery capacity of each group of lithium battery, preferentially the minimum lithium battery of residual capacity is charged, until all lithium batteries that are connected on charging bus are all full of.
10. the control method of lithium battery parallel circulating charging is organized in realization according to claim 9 more, it is characterized in that: described charger is preserved the record of charging of every group of lithium battery.
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Cited By (9)
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| CN104578254A (en) * | 2014-12-09 | 2015-04-29 | 北京新能源汽车股份有限公司 | Method and device for wireless charging of power battery |
| CN106329641A (en) * | 2016-09-09 | 2017-01-11 | 苏州精控能源科技有限公司 | Parallel connection battery pack charging, discharging control method and power battery system |
| CN106505674A (en) * | 2016-11-18 | 2017-03-15 | 广州极飞科技有限公司 | Battery charging switching device, charging system, charging method for handover control and device |
| CN106549469A (en) * | 2017-01-24 | 2017-03-29 | 广州魔思信息科技有限公司 | A kind of lithium battery charged in parallel is used in series circuit structure |
| CN106654423A (en) * | 2016-11-28 | 2017-05-10 | 墨宝股份有限公司 | Method for prolonging cycle life of lithium battery for electric vehicle |
| CN107336631A (en) * | 2017-07-14 | 2017-11-10 | 安徽合力股份有限公司 | Lithium battery fork truck one drags four automatic alternate charging devices and method |
| CN108242842A (en) * | 2016-12-26 | 2018-07-03 | 山东兆宇电子股份有限公司 | A kind of managing device and its method of the parallel connection of different type accumulator group |
| CN110112795A (en) * | 2018-02-01 | 2019-08-09 | 广州极飞科技有限公司 | Charger, multi-battery charging system and its charge control method |
| CN113746175A (en) * | 2021-09-09 | 2021-12-03 | 深圳市赛美达电子有限公司 | Lithium battery parallel management system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104578254A (en) * | 2014-12-09 | 2015-04-29 | 北京新能源汽车股份有限公司 | Method and device for wireless charging of power battery |
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| CN107336631A (en) * | 2017-07-14 | 2017-11-10 | 安徽合力股份有限公司 | Lithium battery fork truck one drags four automatic alternate charging devices and method |
| CN110112795A (en) * | 2018-02-01 | 2019-08-09 | 广州极飞科技有限公司 | Charger, multi-battery charging system and its charge control method |
| CN113746175A (en) * | 2021-09-09 | 2021-12-03 | 深圳市赛美达电子有限公司 | Lithium battery parallel management system and method |
| CN113746175B (en) * | 2021-09-09 | 2022-05-27 | 深圳市赛美达电子有限公司 | Lithium battery parallel management system and method |
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