CN105048579A - Method for solving problem of mutual charging and discharging of different battery packs - Google Patents
Method for solving problem of mutual charging and discharging of different battery packs Download PDFInfo
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- CN105048579A CN105048579A CN201510482135.0A CN201510482135A CN105048579A CN 105048579 A CN105048579 A CN 105048579A CN 201510482135 A CN201510482135 A CN 201510482135A CN 105048579 A CN105048579 A CN 105048579A
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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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Abstract
The invention discloses a method for solving a problem of mutual charging and discharging of different battery packs. The method comprises a battery pack charging step, a battery pack discharging step and a protecting step; in the discharging process, a control module samples current which passes through a current detection module and voltage of batteries; when the control module detects the presence of discharge current which passes through the current detection module, a charging metal oxide semiconductor (MOS) tube is set in the open state by the control module; when the control module detects that the voltage of the batteries reaches an over-discharge threshold, a discharging MOS tube is set in a closed state by the control module until all discharging MOS tubes are in the closed state; and the result shows that all battery modules are discharged off. According to the method for controlling opening and closing of the charging MOS tube and the discharging MOS tubes disclosed by the invention, the problem that the battery modules which are different in voltage level are mutually charged and discharged due to parallel connection is solved; and charging and discharging full-cycle processes of each battery module are realized under the condition that all battery modules are all in a parallel bus loop.
Description
Technical field
The present invention relates to a kind of method solving mutual discharge and recharge problem between different battery pack.
Background technology
Along with the consumption that is flourish, medium-sized, large-sized battery pack of electronic technology is increasing.And these battery pack production, test and use procedure in, many charging and discharging processes be used.
There is following shortcoming in existing charging device or discharge equipment:
1, battery pack needs to use the battery modules of same model to carry out parallel connection use, and battery pack namely in parallel requires that each cell voltage is identical, the battery modules of complete different type, electric pressure can not be carried out input and output in parallel.Because in battery pack, the difference between monomer always exists, and for capacity, its otherness is tending towards disappearing never, but progressively worsen.Same electric current is flow through in battery pack, comparatively speaking, the large person of capacity be always in small area analysis shallow fill shallowly to put, be tending towards capacity attenuation slowly, life, and the little person of capacity is always in big current super-charge super-discharge, is tending towards capacity attenuation quickening, the lost of life, performance parameter difference is increasing between the two, form positive feedback characteristic, low capacity premature failure, the group lost of life.
2, the discharge and recharge step of battery pack cannot reach the function of complete alternation, and the use of battery pack is bothered.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the method for discharge and recharge problem mutually between the different battery pack of a kind of simple, that convenient operation, reliability are strong solution is provided, solves the problem that prior art cannot realize complete alternation discharge and recharge.
The object of the invention is to be achieved through the following technical solutions: a kind of method solving mutual discharge and recharge problem between different battery pack, comprise batteries charging step, battery power discharge step and protection step; Described battery pack comprises the battery modules of multiple parallel connection, described battery modules comprises charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, fuse and the battery of series connection, also comprises the control module be connected with charging metal-oxide-semiconductor, discharge metal-oxide-semiconductor, current detection module and battery;
Described battery power discharge step comprises following sub-step:
S11: before discharge process, all charging metal-oxide-semiconductors are in closed condition, and all electric discharge metal-oxide-semiconductors are in opening, and all battery modules are got up by the diodes in parallel of the course of discharge that charging metal-oxide-semiconductor inside allows;
S12: start electric discharge, the battery modules that voltage is the highest is discharged at first; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, adds electric discharge sequence in parallel by this battery modules; Until all charging metal-oxide-semiconductors are all in opening, realize all battery modules in parallel electric discharges;
(2) when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module; Until all electric discharge metal-oxide-semiconductors are in closed condition, represent that all battery modules have all been discharged;
Described batteries charging step comprises following sub-step:
S21: before charging process, all charging metal-oxide-semiconductors are in opening, and all electric discharge metal-oxide-semiconductors are in closed condition, and all battery modules are all together in parallel by the diode in the charging direction that electric discharge metal-oxide-semiconductor inside allows;
S22: start charging, first charging current enters the minimum battery modules of voltage; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, adds charging sequence in parallel by this battery modules; Until all electric discharge metal-oxide-semiconductors are all in opening, realize all battery modules in parallel chargings;
(2) when control module detects that the voltage of battery reaches overcharge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module; Until all charging metal-oxide-semiconductors are in closed condition, represent that all battery modules bulk charges complete;
Described protection step is: in batteries charging step and battery power discharge step are carried out, if there is the situation that electric current is excessive, fuse disconnects automatically, protects battery modules.
Described current detection module comprises a current sense resistor RSC.
Described battery modules is the battery modules of identical or dissimilar electric pressure.
The invention has the beneficial effects as follows:
(1) the present invention is not overcharging on the basis of only putting, solve with electric discharge metal-oxide-semiconductor method for opening and closing the problem that the meeting parallel with one another of multiple battery modules causes mutual discharge and recharge by controlling charging metal-oxide-semiconductor, or even the parallel connection of the battery modules of complete different type voltage grade.
(2) present invention achieves when all battery modules all in a bus bar circuit in parallel, export only have positive and negative two lines, each battery modules all can realize the total recycle process of charge and discharge: the charging metal-oxide-semiconductor after charge step completes is identical with the initial condition of discharge step with the open and-shut mode of electric discharge metal-oxide-semiconductor, and the charging metal-oxide-semiconductor in like manner after discharge step completes is identical with the initial condition of charge step with the open and-shut mode of electric discharge metal-oxide-semiconductor.
(3) the present invention also comprises a fuse for the protection of battery modules, disconnects, have fail safe when electric current is excessive.
(4) the present invention is simple, convenient operation, and reliability is strong.
Accompanying drawing explanation
Fig. 1 is the inventive method flow chart;
Fig. 2 is battery pack structure block diagram;
Fig. 3 is battery modules circuit diagram;
Fig. 4 is that electric discharge completes equivalent circuit diagram;
Fig. 5 is charging complete equivalent circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail: as shown in Figure 1, a kind of method solving mutual discharge and recharge problem between different battery pack, comprises batteries charging step, battery power discharge step and protection step; As shown in Figure 2, described battery pack comprises the battery modules of multiple parallel connection, as shown in Figure 3, described battery modules comprises charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, fuse and the battery of series connection, also comprises the control module be connected with charging metal-oxide-semiconductor, discharge metal-oxide-semiconductor, current detection module and battery;
Described battery power discharge step comprises following sub-step:
S11: before discharge process, all charging metal-oxide-semiconductors are in closed condition, and all electric discharge metal-oxide-semiconductors are in opening, and all battery modules are got up by the diodes in parallel of the course of discharge that charging metal-oxide-semiconductor inside allows;
S12: start electric discharge, due to the relation of voltage competition, the battery modules that voltage is the highest is discharged at first; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, adds electric discharge sequence in parallel by this battery modules, avoids charging metal-oxide-semiconductor to bear discharging current; Until all charging metal-oxide-semiconductors are all in opening, realize all battery modules in parallel electric discharges;
(2) when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module, and electric discharge metal-oxide-semiconductor now plays not overdischarge; Until all electric discharge metal-oxide-semiconductors are in closed condition, represent that all battery modules have all been discharged, equivalent circuit diagram as shown in Figure 4.
After electric discharge completes, charging metal-oxide-semiconductor is in opening, and electric discharge metal-oxide-semiconductor is in closed condition, identical with the initial condition of the metal-oxide-semiconductor that discharges with the charging metal-oxide-semiconductor required for charge battery step.
Described batteries charging step comprises following sub-step:
S21: before charging process, all charging metal-oxide-semiconductors are in opening, and all electric discharge metal-oxide-semiconductors are in closed condition, and all battery modules are all together in parallel by the diode in the charging direction that electric discharge metal-oxide-semiconductor inside allows;
S22: start charging, due to the relation of voltage competition, first charging current enters the minimum battery modules of voltage; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, adds charging sequence in parallel by this battery modules; Until all electric discharge metal-oxide-semiconductors are all in opening, realize all battery modules in parallel chargings;
(2) when control module detects that the voltage of battery reaches overcharge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module, and charging metal-oxide-semiconductor now plays not overcharge; Until all charging metal-oxide-semiconductors are in closed condition, represent that all battery modules bulk charges complete, equivalent circuit diagram as shown in Figure 5.
After charging complete, electric discharge metal-oxide-semiconductor is in opening, and charging metal-oxide-semiconductor is in closed condition, identical with the initial condition of the metal-oxide-semiconductor that discharges with the charging metal-oxide-semiconductor required for battery discharge step.
Described current detection module comprises a current sense resistor RSC.
Described battery modules is the battery modules of identical or dissimilar electric pressure.
Described protection step is: in batteries charging step and battery power discharge step are carried out, if there is the situation that electric current is excessive, fuse disconnects automatically, protects battery modules.
Claims (3)
1. solve a method for mutual discharge and recharge problem between different battery pack, it is characterized in that: comprise batteries charging step, battery power discharge step and protection step; Described battery pack comprises the battery modules of multiple parallel connection, described battery modules comprises charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, fuse and the battery of series connection, also comprises the control module be connected with charging metal-oxide-semiconductor, discharge metal-oxide-semiconductor, current detection module and battery;
Described battery power discharge step comprises following sub-step:
S11: before discharge process, all charging metal-oxide-semiconductors are in closed condition, and all electric discharge metal-oxide-semiconductors are in opening, and all battery modules are got up by the diodes in parallel of the course of discharge that charging metal-oxide-semiconductor inside allows;
S12: start electric discharge, the battery modules that voltage is the highest is discharged at first; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, adds electric discharge sequence in parallel by this battery modules; Until all charging metal-oxide-semiconductors are all in opening, realize all battery modules in parallel electric discharges;
(2) when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module; Until all electric discharge metal-oxide-semiconductors are in closed condition, represent that all battery modules have all been discharged;
Described batteries charging step comprises following sub-step:
S21: before charging process, all charging metal-oxide-semiconductors are in opening, and all electric discharge metal-oxide-semiconductors are in closed condition, and all battery modules are all together in parallel by the diode in the charging direction that electric discharge metal-oxide-semiconductor inside allows;
S22: start charging, first charging current enters the minimum battery modules of voltage; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, adds charging sequence in parallel by this battery modules; Until all electric discharge metal-oxide-semiconductors are all in opening, realize all battery modules in parallel chargings;
(2) when control module detects that the voltage of battery reaches overcharge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module; Until all charging metal-oxide-semiconductors are in closed condition, represent that all battery modules bulk charges complete;
Described protection step is: in batteries charging step and battery power discharge step are carried out, if there is the situation that electric current is excessive, fuse disconnects automatically, protects battery modules.
2. a kind of method solving mutual discharge and recharge problem between different battery pack according to claim 1, is characterized in that: described current detection module comprises a current sense resistor RSC.
3. a kind of method solving mutual discharge and recharge problem between different battery pack according to claim 1, is characterized in that: described battery modules is the battery modules of identical or dissimilar electric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482135.0A CN105048579B (en) | 2015-08-03 | 2015-08-03 | It is a kind of to solve the problems, such as between different battery packs the mutually method of discharge and recharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482135.0A CN105048579B (en) | 2015-08-03 | 2015-08-03 | It is a kind of to solve the problems, such as between different battery packs the mutually method of discharge and recharge |
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| CN105048579A true CN105048579A (en) | 2015-11-11 |
| CN105048579B CN105048579B (en) | 2018-03-16 |
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| CN201510482135.0A Active CN105048579B (en) | 2015-08-03 | 2015-08-03 | It is a kind of to solve the problems, such as between different battery packs the mutually method of discharge and recharge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154665A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of discharge and recharge combiner and electric power system |
| CN107612054A (en) * | 2016-07-11 | 2018-01-19 | 罗伯特·博世有限公司 | For the battery pack system to power network supply electric energy |
| CN111354992A (en) * | 2020-04-01 | 2020-06-30 | 深圳市超力源科技有限公司 | Low-cost secondary lithium battery parallel use method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1372364A (en) * | 2001-02-20 | 2002-10-02 | 精工电子有限公司 | Controller for electricity recharge/discharge |
| US20030146738A1 (en) * | 2002-02-01 | 2003-08-07 | Mitsumi Electric Co. Ltd. | Secondary battery protection circuit having a clamping circuit |
-
2015
- 2015-08-03 CN CN201510482135.0A patent/CN105048579B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1372364A (en) * | 2001-02-20 | 2002-10-02 | 精工电子有限公司 | Controller for electricity recharge/discharge |
| US20030146738A1 (en) * | 2002-02-01 | 2003-08-07 | Mitsumi Electric Co. Ltd. | Secondary battery protection circuit having a clamping circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612054A (en) * | 2016-07-11 | 2018-01-19 | 罗伯特·博世有限公司 | For the battery pack system to power network supply electric energy |
| CN107612054B (en) * | 2016-07-11 | 2023-05-16 | 罗伯特·博世有限公司 | Battery system for supplying electric energy to an electric network |
| CN107154665A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of discharge and recharge combiner and electric power system |
| CN107154665B (en) * | 2017-07-20 | 2024-01-02 | 山东圣阳电源股份有限公司 | Charging and discharging combiner and power supply system |
| CN111354992A (en) * | 2020-04-01 | 2020-06-30 | 深圳市超力源科技有限公司 | Low-cost secondary lithium battery parallel use method |
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| CN105048579B (en) | 2018-03-16 |
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Denomination of invention: A method for solving the problem of mutual charge and discharge between different battery packs Effective date of registration: 20211228 Granted publication date: 20180316 Pledgee: Bank of China Limited Chengdu Wuhou sub branch Pledgor: CHENGDU UNI-LINK ENERGY Co.,Ltd. Registration number: Y2021510000314 |
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