CN111063950A - Charging method and charging system - Google Patents
Charging method and charging system Download PDFInfo
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- CN111063950A CN111063950A CN201911060999.8A CN201911060999A CN111063950A CN 111063950 A CN111063950 A CN 111063950A CN 201911060999 A CN201911060999 A CN 201911060999A CN 111063950 A CN111063950 A CN 111063950A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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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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- Chemical Kinetics & Catalysis (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention relates to the field of battery charging, and in particular, to a charging method and a charging system. The charging method comprises the following steps: acquiring battery information of each battery unit in a parallel battery pack, wherein the battery information comprises charge parameters; calculating the difference of the charge parameters among the battery units; and when the difference value is smaller than a preset difference value threshold value, simultaneously charging the battery units in parallel. The scheme of the invention ensures that the charging power supply can charge the battery unit with the maximum power, can shorten the total charging time to the maximum extent and improves the charging efficiency.
Description
Technical Field
The present invention relates to the field of battery charging, and in particular, to a charging method and a charging system.
Background
With the diversification of the functions of electronic products, the amount of electricity consumed by the battery increases with the functions of the electronic products. Unmanned aerial vehicle battery duration like present consumer is generally on the short side. For longer duration, users typically purchase multiple batteries. However, when a plurality of batteries are charged, the charging operation is troublesome and the charging time is long.
Therefore, how to provide a solution with short charging time for charging a plurality of batteries has become a need in the art.
Disclosure of Invention
The invention mainly aims to provide a charging method and a charging system, and aims to solve the technical problem that the existing multiple batteries are long in charging time.
In a first aspect, the present invention provides a charging method, including:
acquiring battery information of each battery unit in a parallel battery pack, wherein the battery information comprises charge parameters;
calculating the difference of the charge parameters among the battery units;
and when the difference value is smaller than a preset difference value threshold value, simultaneously charging the battery units in parallel.
Preferably, the charging method further includes:
and when the difference value is larger than a preset difference value threshold value, charging the battery unit with low charge parameter in the two battery units corresponding to the difference value so as to enable the difference value to be smaller than the preset difference value threshold value.
Preferably, the battery information further includes a battery temperature and a battery state, and before the calculating the difference of the charge parameters between the battery units, the charging method further includes:
judging whether the battery temperature is smaller than a preset temperature range threshold value or not and judging whether the battery state is normal or not;
and when the temperature is within the temperature range threshold value and the battery state is normal, calculating the difference of the charge parameters among the battery units.
Preferably, the method further comprises:
and when the battery information of a new battery unit is acquired, calculating the difference value of the charge parameters among the battery units again.
Preferably, the charge parameter includes charge information, and the method further includes:
when the electric quantity of one of the battery units is full, stopping charging the fully charged battery unit.
In a second aspect, the present application further provides a charging system for charging a parallel battery pack, where the charging system includes a charging power supply, a control module, and charging switches whose number is consistent with that of battery cells in the parallel battery pack;
the control module is electrically connected with the plurality of battery units respectively and used for acquiring battery information of each battery unit in the plurality of battery units, and the battery information comprises charge parameters;
the control module is also used for calculating the difference value of the charge parameters among the battery units;
the control module is further electrically connected with the charging switches respectively, the charging power supply is electrically connected with the battery units through one charging switch respectively, and when the difference value is smaller than a preset difference value threshold value, the control module is used for controlling the charging switches connected with the charging units to be turned on so as to charge the battery units simultaneously and parallelly.
Preferably, when the difference is greater than a preset difference threshold, the control module is further configured to control to turn on a charging switch connected to a battery unit with a low charge parameter of the two battery units corresponding to the difference, so as to charge the battery unit with the low charge parameter of the two battery units corresponding to the difference, so that the difference is smaller than the preset difference threshold.
Preferably, the battery information further includes a battery temperature and a battery state,
the control module is also used for judging whether the battery temperature is smaller than a preset temperature range threshold value and judging whether the battery state is normal;
when the temperature is within the temperature range threshold and the battery state is normal, the control module calculates the difference of the charge parameters among the battery units.
Preferably, when the control module acquires the battery information of a new battery unit, the control module is further configured to calculate the difference between the charge parameters of the battery units again.
Preferably, the charge parameter includes charge information, and the method further includes:
when the electric quantity of one of the battery units is full, the control module controls a charging switch which is disconnected from the fully charged battery unit to stop charging the fully charged battery unit.
Compared with the prior art, the technical scheme of the invention is that the battery information of each battery unit in the parallel battery pack is obtained, wherein the battery information comprises the charge parameters; calculating the difference of the charge parameters among the battery units; and when the difference value is smaller than a preset difference value threshold value, the battery units are charged simultaneously in parallel, so that the charging power supply can charge the battery units at the maximum power, the total charging time can be shortened to the greatest extent, and the charging efficiency is improved.
Drawings
Fig. 1 is a schematic block diagram illustrating an electrical connection between a charging system and a parallel battery pack according to a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of a charging method according to a second embodiment of the present invention.
Fig. 3 is a schematic flow chart of a charging method according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, a charging system 10 for charging parallel battery packs 20 is provided according to a first embodiment of the present application. The charging system 10 includes a charging power source 11, a control module 12, and a charging switch 13 corresponding to the number of battery cells in the parallel battery pack 20. The parallel battery pack 20 includes a plurality of battery units, the charging power source 11 is electrically connected to each battery unit through a charging switch 13, the control module 12 is electrically connected to each battery unit, and the control module 12 is further electrically connected to the charging switch 13. The control module 12 is configured to obtain battery information of each battery unit in the plurality of battery units, where the battery information includes a charge parameter; the control module 12 is further configured to calculate a difference between the charge parameters of the battery units; and when the difference value is smaller than a preset difference value threshold value, the control module 12 is configured to control the charging switches 13 connected to the charging units to be turned on, so as to charge the battery units simultaneously and in parallel.
The number of battery cells included in the parallel battery pack 20 is not limited, and in the present application, the number of battery cells is at least 2. It is understood that the number of battery cells included in the parallel battery pack 20 may also be changed, for example, when 2 battery cells are initially charged, and during the charging process, 1 new battery cell is charged, that is, the parallel battery pack is added with 1 new battery cell, and then the parallel battery pack 20 includes 3 battery cells. It is understood that the charging system 10 may include a battery holder for mounting a battery unit. When the battery units are installed in the battery seat, the parallel connection between the battery units is realized. The number of battery cells of the parallel battery pack 20 increases by one for every battery cell installed in the battery holder. In the present application, 3 battery cells are taken as an example for explanation, and only 3 battery cells are not limited. In the present application, the battery unit is a battery unit capable of data communication. For example, the battery unit is a data communication battery. The battery unit may include one or more battery cells, and when there are a plurality of battery cells, the battery cells may be connected in parallel or in series, which is not limited in this application. For example, the battery cells include a battery cell a, a battery cell B, and a battery cell C.
The charging switch 13 is a switch type element, and the charging switch 13 can be controlled by the control module 12 to realize on-off of the control circuit. Specifically, the charge switch 13 may be a relay. It is understood that the charging switch 13 may be other types of switches that can be controlled, and is not limited in this application. The number of the charging switches 13 is the same as the number of the battery cells, each charging switch 13 is electrically connected to one battery cell, and when the charging switch 13 is closed, the battery cell electrically connected to the charging switch 13 is charged. If the charging switch 13 includes a charging switch a, a charging switch B and a charging switch C, the charging switch a is electrically connected to the battery unit a, the charging switch B is electrically connected to the battery unit B, and the charging switch C is electrically connected to the battery unit C.
The charging power supply 11 may be a power supply capable of storing energy, or may be a power adapter to convert the commercial power into a suitable voltage or current. The charging power supply 11 is a charging power supply 11 having a constant current function and a constant voltage function. The charging power source 11 is electrically connected to each charging switch 13, and the charging power source 11 is electrically connected to one battery unit through one charging switch 13. Specifically, the charging power supply 11 is electrically connected to the battery unit a through the charging switch a, the charging power supply 11 is electrically connected to the battery unit B through the charging switch B, and the charging power supply 11 is electrically connected to the battery unit C through the charging switch C. When the charging switch a is closed, the charging power supply 11 charges the battery unit a, when the charging switch B is closed, the charging power supply 11 charges the battery unit B, and when the charging switch C is closed, the charging power supply 11 charges the battery unit C. When the charging switch A, the charging switch B and the charging switch C are all closed, the battery units, namely the battery unit A, the battery unit B and the battery unit C are charged simultaneously and parallelly.
The control module 12 may be a separate module, or may be integrated with the charging power source 11 and the charging switch 13. The control module 12 may have its own means for storing electrical energy or may be powered by the charging power supply 11 for operation. The manner of communication between the control module 12 and the battery unit is not limited.
The control module 12 obtains battery information of each of the plurality of battery cells, where the battery information includes a charge parameter, and the battery information may further include a battery temperature and a battery state. The charge parameters are the battery electric quantity states measured according to the battery voltage, the internal resistance and other parameters, namely the charge parameters comprise electric quantity information. The battery temperature is the temperature of the battery unit, the battery state is the state that the battery unit is in, the battery state includes normal state and abnormal state, and the abnormal state includes short circuit, excessive pressure and under-voltage.
The control module 12 calculates the difference in charge parameters between the battery cells. And if the charge parameters are electric quantities, calculating the difference between the electric quantities of the battery units. If the capacity of battery cell a is 3.9, the capacity of battery cell B is 4, and the capacity of battery cell C is 4.2, the difference between the capacities of battery cells a and B is 0.1, the difference between the capacities of battery cells a and C is 0.3, and the difference between the capacities of battery cells B and C is 0.2. In the present application, the value of the charge amount is only an example, and does not limit the specific value of the charge amount of the battery unit.
And when the difference value is smaller than a preset difference value threshold value, the control module 12 is configured to control the charging switches 13 connected to the charging units to be turned on, so as to charge the battery units simultaneously and in parallel. The size of the difference threshold is not limited, and may be set according to the requirement, such as setting the difference threshold according to the characteristics of the battery unit. If the difference threshold is 0.5 and the electric quantity difference of each battery unit is smaller than the difference threshold of 0.5, the control module 12 controls the charging switch a and the charging switch B to be turned on so as to charge the battery unit a, the battery unit B and the battery unit C simultaneously in parallel.
Preferably, when the charge of one of the battery cells is full, the control module 12 controls the charge switch 13 to disconnect the battery cell that is fully charged, so as to stop charging the battery cell that is fully charged. If the battery unit C has the maximum electric quantity, and the battery unit C is fully charged first, the charging switch C electrically connected with the battery unit C is turned off to stop charging the battery unit C.
Preferably, when the difference is greater than a preset difference threshold, the control module 12 is further configured to control to turn on the charging switch 13 connected to the battery unit with the low charge parameter in the two battery units corresponding to the difference, so as to charge the battery unit with the low charge parameter in the two battery units corresponding to the difference, so that the difference is smaller than the preset difference threshold. If the amount of power of battery cell a is 3, the amount of power of battery cell B is 4, and the amount of power of battery cell C is 4.2, then the difference in power between battery cell a and battery cell B is 1, the difference in power between battery cell a and battery cell C is 1.2, and the difference in power between battery cell B and battery cell C is 0.2. The electric quantity difference value 1 between the battery unit A and the battery unit B, and the difference value 1.2 between the battery unit A and the battery unit C are both larger than the difference threshold value 0.5, then the control module 12 controls to turn on the charging switch A connected with the battery unit A with low charge parameter in the two battery units corresponding to the difference value 1, and the control module 12 controls to turn on the charging switch A connected with the battery unit A with low charge parameter in the two battery units corresponding to the difference value 1.2, namely only turns on the charging switch A, so as to charge the battery unit A. When the electric quantity of the battery units is greater than 3.7, even if the difference value of the electric quantities between the battery units is less than the difference threshold value of 0.5, the battery units with low electric quantity are not charged separately, but when the difference value is less than the preset difference threshold value, the control module 12 is used for controlling the charging switches 13 connected with the charging units to be opened so as to charge the battery units simultaneously and parallelly.
The control module 12 is further configured to determine whether the battery temperature is less than a preset temperature range threshold and determine whether the battery state is normal; when the temperature is within the temperature range threshold and the battery state is normal, the control module 12 calculates the difference between the charge parameters of the battery units. The temperature range threshold is a temperature range in which the battery cell can normally operate. The specific range of the temperature range threshold is not limited, and may be set according to the type of the battery cell. If the battery unit comprises a lithium ion type cell, the temperature range threshold may be set to 0-45 ℃. The battery state includes a normal state and an abnormal state, and the abnormal state includes a short circuit, an overvoltage, and an undervoltage. . When the temperature exceeds the temperature range threshold or the battery state is abnormal, the reacquisition control module 12 reacquires the battery information of each of the plurality of battery cells.
When the control module 12 acquires the battery information of a new battery unit, the control module 12 is further configured to calculate the difference between the charge parameters of the battery units again. Namely, the number of the battery units in the connected battery pack is increased, the difference of the charge parameters among the battery units is recalculated, and when the difference is smaller than a preset difference threshold value, the battery units are charged simultaneously and parallelly.
Referring to fig. 2, a second embodiment of the present application provides a charging method for charging a parallel battery pack by using the charging system described above, the charging method includes:
s11: the method comprises the steps of obtaining battery information of each battery unit in a parallel battery pack, wherein the battery information comprises charge parameters.
The charge parameters are the battery electric quantity states measured according to the battery voltage, the internal resistance and other parameters, namely the charge parameters comprise electric quantity information. The battery temperature is the temperature of the battery unit, the battery state is the state that the battery unit is in, the battery state includes normal state and abnormal state, and the abnormal state includes short circuit, excessive pressure and under-voltage.
S12: and calculating the difference of the charge parameters among the battery units.
And if the charge parameters are electric quantities, calculating the difference between the electric quantities of the battery units. If the capacity of battery cell a is 3.9, the capacity of battery cell B is 4, and the capacity of battery cell C is 4.2, the difference between the capacities of battery cells a and B is 0.1, the difference between the capacities of battery cells a and C is 0.3, and the difference between the capacities of battery cells B and C is 0.2. In the present application, the value of the charge amount is only an example, and does not limit the specific value of the charge amount of the battery unit.
S13: and when the difference value is smaller than a preset difference value threshold value, simultaneously charging the battery units in parallel.
The size of the difference threshold is not limited, and may be set according to the requirement, such as setting the difference threshold according to the characteristics of the battery unit. If the difference threshold is 0.5 and the electric quantity difference of each battery unit is smaller than the difference threshold of 0.5, the control module controls the charging switch A and the charging switch B to be turned on so as to charge the battery unit A, the battery unit B and the battery unit C simultaneously in parallel.
Preferably, the charging method further includes:
when the electric quantity of one of the battery units is full, stopping charging the fully charged battery unit.
If the battery unit C has the maximum electric quantity, and the battery unit C is fully charged first, the charging switch C electrically connected with the battery unit C is turned off to stop charging the battery unit C.
Preferably, the charging method further includes:
and when the difference value is larger than a preset difference value threshold value, charging the battery unit with low charge parameter in the two battery units corresponding to the difference value so as to enable the difference value to be smaller than the preset difference value threshold value.
If the amount of power of battery cell a is 3, the amount of power of battery cell B is 4, and the amount of power of battery cell C is 4.2, then the difference in power between battery cell a and battery cell B is 1, the difference in power between battery cell a and battery cell C is 1.2, and the difference in power between battery cell B and battery cell C is 0.2. And if the electric quantity difference value 1 between the battery unit A and the battery unit B and the difference value 1.2 between the battery unit A and the battery unit C are both greater than the difference value threshold value 0.5, the control module controls to turn on the charging switch A connected with the battery unit A with low charge parameter in the two battery units corresponding to the difference value 1, and the control module controls to turn on the charging switch A connected with the battery unit A with low charge parameter in the two battery units corresponding to the difference value 1.2, namely only turns on the charging switch A to charge the battery unit A. When the electric quantity of the battery units is more than 3.7, even if the difference value of the electric quantity between the battery units is less than the difference threshold value of 0.5, the battery units with low electric quantity are not charged independently, and when the difference value is less than the preset difference threshold value, the control module is used for controlling the charging switches connected with the charging units to be opened so as to charge the battery units simultaneously and parallelly.
Preferably, the charging method further includes:
and when the battery information of a new battery unit is acquired, calculating the difference value of the charge parameters among the battery units again.
Namely, the number of the battery units in the parallel battery pack is increased, the difference of the charge parameters among the battery units is recalculated, so that when the difference is smaller than a preset difference threshold value, the battery units are charged in parallel at the same time.
According to the charging method, the battery information of each battery unit in the parallel battery pack can be acquired in real time so as to perform subsequent steps, namely the method can be performed in real time.
According to the charging method, the battery information of each battery unit in the parallel battery pack is obtained, and the battery information comprises charge parameters; calculating the difference of the charge parameters among the battery units; and when the difference value is smaller than a preset difference value threshold value, the battery units are charged simultaneously in parallel, so that the charging power supply can charge the battery units at the maximum power, the total charging time can be shortened to the greatest extent, and the charging efficiency is improved.
Referring to fig. 3, a charging method is also provided in the third embodiment of the present application, and based on the foregoing embodiments, a safe charging scheme is provided in this embodiment. The charging method comprises the following steps:
s21: the method comprises the steps of obtaining battery information of each battery unit in a parallel battery pack, wherein the battery information comprises charge parameters.
The battery information also includes battery temperature and battery status.
S22: and judging whether the battery temperature is smaller than a preset temperature range threshold value or not and judging whether the battery state is normal or not.
The battery information also includes battery temperature and battery status. The temperature range threshold is a temperature range in which the battery cell can normally operate. The specific range of the temperature range threshold is not limited, and may be set according to the type of the battery cell. If the battery unit comprises a lithium ion type cell, the temperature range threshold may be set to 0-45 ℃. The battery state includes a normal state and an abnormal state, and the abnormal state includes a short circuit, an overvoltage, and an undervoltage. . And when the temperature is within the temperature range threshold and the battery state is normal, calculating the difference of the charge parameters between the battery units, namely executing step S23. And when the temperature exceeds the temperature range threshold value or the battery state is abnormal, the reacquisition control module reacquires the battery information of each battery unit in the plurality of battery units.
S23: and calculating the difference of the charge parameters among the battery units.
S24: and when the difference value is smaller than a preset difference value threshold value, simultaneously charging the battery units in parallel.
According to the charging method, the battery information of each battery unit in the parallel battery pack is obtained, and the battery information comprises charge parameters; judging whether the battery temperature is smaller than a preset temperature range threshold value or not and judging whether the battery state is normal or not; when the temperature is within the temperature range threshold value and the battery state is normal, calculating the difference value of the charge parameters among the battery units; and when the difference value is smaller than the preset difference value threshold value, the battery units are charged simultaneously and parallelly, so that the battery can return to a normal temperature range and a normal state to work, the charging safety is improved, and the charging speed is ensured.
It should be noted that the above-mentioned numbers of the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments. And the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A charging method, characterized in that the charging method comprises:
acquiring battery information of each battery unit in a parallel battery pack, wherein the battery information comprises charge parameters;
calculating the difference of the charge parameters among the battery units;
and when the difference value is smaller than a preset difference value threshold value, simultaneously charging the battery units in parallel.
2. The charging method according to claim 1, characterized in that: the charging method further comprises:
and when the difference value is larger than a preset difference value threshold value, charging the battery unit with low charge parameter in the two battery units corresponding to the difference value so as to enable the difference value to be smaller than the preset difference value threshold value.
3. The charging method according to claim 1, characterized in that: the battery information further includes a battery temperature and a battery state, and before calculating the difference between the charge parameters of the battery units, the charging method further includes:
judging whether the battery temperature is smaller than a preset temperature range threshold value or not and judging whether the battery state is normal or not;
and when the temperature is within the temperature range threshold value and the battery state is normal, calculating the difference of the charge parameters among the battery units.
4. A charging method as claimed in claim 1, further comprising:
and when the battery information of a new battery unit is acquired, calculating the difference value of the charge parameters among the battery units again.
5. The charging method of claim 1, wherein the charge parameter comprises charge information, the method further comprising:
when the electric quantity of one of the battery units is full, stopping charging the fully charged battery unit.
6. A charging system for charging parallel battery packs, characterized by: the charging system comprises a charging power supply, a control module and charging switches, wherein the number of the charging switches is consistent with that of the battery units in the parallel battery pack;
the control module is electrically connected with the plurality of battery units respectively and used for acquiring battery information of each battery unit in the plurality of battery units, and the battery information comprises charge parameters;
the control module is also used for calculating the difference value of the charge parameters among the battery units;
the control module is further electrically connected with the charging switches respectively, the charging power supply is electrically connected with the battery units through one charging switch respectively, and when the difference value is smaller than a preset difference value threshold value, the control module is used for controlling the charging switches connected with the charging units to be turned on so as to charge the battery units simultaneously and parallelly.
7. The charging system of claim 6, wherein:
when the difference value is larger than a preset difference value threshold value, the control module is further used for controlling to turn on a charging switch connected with a battery unit with a low charge parameter in the two battery units corresponding to the difference value so as to charge the battery unit with the low charge parameter in the two battery units corresponding to the difference value, and the difference value is smaller than the preset difference value threshold value.
8. The charging system of claim 6, wherein: the battery information also includes a battery temperature and a battery status,
the control module is also used for judging whether the battery temperature is smaller than a preset temperature range threshold value and judging whether the battery state is normal;
when the temperature is within the temperature range threshold and the battery state is normal, the control module calculates the difference of the charge parameters among the battery units.
9. The charging system of claim 6, wherein: when the control module acquires the battery information of a new battery unit, the control module is further used for calculating the difference value of the charge parameters among the battery units again.
10. The charging system of claim 6, wherein: the charge parameters include charge information, and the method further includes:
when the electric quantity of one of the battery units is full, the control module controls a charging switch which is disconnected from the fully charged battery unit to stop charging the fully charged battery unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911060999.8A CN111063950A (en) | 2019-11-01 | 2019-11-01 | Charging method and charging system |
| PCT/CN2020/124051 WO2021083149A1 (en) | 2019-11-01 | 2020-10-27 | Charging method and charging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911060999.8A CN111063950A (en) | 2019-11-01 | 2019-11-01 | Charging method and charging system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021083149A1 (en) * | 2019-11-01 | 2021-05-06 | 深圳市道通智能航空技术股份有限公司 | Charging method and charging system |
| CN112786983A (en) * | 2021-01-29 | 2021-05-11 | 深圳市道通智能航空技术股份有限公司 | Charging method, charger and charging system |
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| WO2021083149A1 (en) | 2021-05-06 |
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