CN113517745A - Intermittent charging system and method - Google Patents
Intermittent charging system and method Download PDFInfo
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- CN113517745A CN113517745A CN202110947167.9A CN202110947167A CN113517745A CN 113517745 A CN113517745 A CN 113517745A CN 202110947167 A CN202110947167 A CN 202110947167A CN 113517745 A CN113517745 A CN 113517745A
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- batteries
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- charging
- switch
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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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
- 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
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an intermittent charging system and a method, which relate to the technical field of battery charging and comprise a charging power supply with the voltage of D V, a series battery pack and a charging device, wherein the series battery pack comprises a plurality of batteries with the voltage of D1V and connected in series between the positive electrode and the negative electrode of the charging power supply, the series battery pack consists of M normal batteries and N redundant batteries, D1M, the charging device comprises a battery capacity detection unit for detecting the residual electric quantity of the batteries, a battery capacity sorting unit for sorting the residual electric quantity of the batteries from small to large, and a switching control switch for leaving the batteries with the residual electric quantity sorted in 1-M in a series circuit and removing the batteries sorted in M +1-M + N in the series circuit, sorting the residual electric quantity of the batteries, and charging the charging power supply for charging the M batteries with less residual electric quantity, and (4) reordering at intervals, and charging the reordered M batteries to simultaneously fully charge the batteries, so that the overcharging of the batteries is avoided.
Description
Technical Field
The invention relates to the technical field of battery charging, in particular to an intermittent charging system and method.
Background
The battery pack is generally composed of a plurality of batteries connected in series or in parallel, at present, in the series battery pack, the theoretical design life of a single battery is usually more than 10 years, but in the actual use process, a large number of series battery packs are forced to be scrapped because the use requirements cannot be met after the series battery packs are used for 5 years.
One important reason for the early rejection of the battery pack is the overcharge of the battery, and the multiple batteries of the battery pack connected in series are generally charged in a series connection mode, namely, after the multiple batteries are connected in series, the multiple batteries are charged through a charging power supply, but the chemical batteries have congenital monomer differences when leaving a factory, in the actual charging process, the situation that some batteries are fully charged and other batteries are not fully charged can occur, and if the battery pack is continuously charged, the fully charged batteries can be overcharged, and the overcharged batteries are easily damaged in advance, so that the whole battery pack is forced to be rejected, and the use safety and the service life of the battery pack are influenced.
Disclosure of Invention
The invention aims to: in order to solve the problem that a series battery pack is easily scrapped in advance due to overcharge of the battery, the invention provides an intermittent charging system and a method.
The invention specifically adopts the following technical scheme for realizing the purpose:
an intermittent charging system comprises a charging power supply with the voltage of D V, a series battery pack and a charging device, wherein the series battery pack comprises a plurality of batteries with the voltage of D1V and connected in series between the positive electrode and the negative electrode of the charging power supply, the series battery pack comprises M normal batteries and N redundant batteries, D1M, and the charging device comprises a battery capacity detection unit for detecting the residual electric quantity of the batteries, a battery capacity sorting unit for sorting the residual electric quantity of the batteries from small to large, and a switching control switch for leaving the batteries with the residual electric quantity sorted in 1-M in a series circuit and removing the batteries sorted in M +1-M + N in the series circuit.
Further, the change-over switch comprises a plurality of change-over control sub-switches in one-to-one correspondence with the batteries, each change-over control sub-switch comprises a series sub-switch and a parallel sub-switch, one end of each series sub-switch is connected with the corresponding battery in series, the other end of each series sub-switch is connected with the corresponding parallel sub-switch in parallel, and the other end of each parallel sub-switch is connected with the corresponding battery in parallel.
An intermittent charging method comprising the steps of:
(1) the battery capacity detection unit detects the residual capacity of each battery, if the residual capacity of all the batteries is less than the rated capacity, the step (2) is carried out, if the residual capacity of all the batteries is equal to the rated capacity, the step (5) is carried out,
(2) the battery capacity sequencing unit sequences the residual electric quantity of all batteries from small to large;
(3) closing the series sub-switches corresponding to the batteries sorted in the range of 1-M and opening the parallel sub-switches, opening the series sub-switches corresponding to the batteries sorted in the range of M +1-M + N and closing the parallel sub-switches, and starting a charging power supply to charge the batteries;
(4) repeatedly performing steps (1) - (3) every T seconds;
(5) and turning off the charging power supply and stopping charging.
The invention has the following beneficial effects:
the residual electric quantity of the batteries is sequenced, the charging power supply charges the M batteries with less residual electric quantity, the M batteries are reordered at intervals, and then the M batteries which are reordered are charged, so that the batteries can be fully charged at the same time, the over-charging condition of the batteries is avoided, and the service life of the battery pack is prolonged.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic of the present invention;
Detailed Description
Example 1
Referring to fig. 1 and 2, the present embodiment provides an intermittent charging system, including a charging power supply with a voltage of 48 v, a series battery pack including a plurality of batteries with a voltage of 2 v and connected in series between the positive and negative poles of the charging power supply, the series battery pack being composed of 24 normal batteries and 6 redundant batteries, and a charging device including a battery capacity detection unit that detects the remaining power of the batteries, a battery capacity sorting unit that sorts the remaining power of the batteries from small to large, and a switching control switch that leaves the batteries sorted in 1-24 in a series circuit and rejects the batteries sorted in 25-30 in the series circuit.
Example 2
Referring to fig. 1 and 2, this embodiment is further improved on the basis of embodiment 1, and specifically, the switch includes a plurality of switch control sub-switches corresponding to the batteries one to one, each switch control sub-switch includes a series sub-switch and a parallel sub-switch, one end of the series sub-switch is connected in series with the corresponding battery, the other end of the series sub-switch is connected in parallel with the corresponding parallel sub-switch, and the other end of the parallel sub-switch is connected in parallel with the corresponding battery.
Example 3
Referring to fig. 1 and 2, the present embodiment provides an intermittent charging method, including the steps of:
(1) the battery capacity detection unit detects the residual capacity of each battery, if the residual capacity of all the batteries is less than the rated capacity, the step (2) is carried out, if the residual capacity of all the batteries is equal to the rated capacity, the step (5) is carried out,
(2) the battery capacity sequencing unit sequences the residual electric quantity of all batteries from small to large;
(3) closing the series sub-switches corresponding to the batteries in the sequence of 1-24, opening the parallel sub-switches, opening the series sub-switches corresponding to the batteries in the sequence of 25-30, closing the parallel sub-switches, and starting a charging power supply to charge the batteries;
(4) repeating steps (1) - (3) every 1 second;
(5) and turning off the charging power supply and stopping charging.
Claims (3)
1. An intermittent charging system is characterized by comprising a charging power supply with the voltage of D V, a series battery pack and a charging device, wherein the series battery pack comprises a plurality of batteries with the voltage of D1V and connected in series between the positive electrode and the negative electrode of the charging power supply, the series battery pack is composed of M normal batteries and N redundant batteries, D is D1M, and the charging device comprises a battery capacity detection unit for detecting the residual electric quantity of the batteries, a battery capacity sorting unit for sorting the residual electric quantity of the batteries from small to large, and a switching control switch for leaving the batteries with the residual electric quantity sorted in 1-M in a series circuit and removing the batteries sorted in M +1-M + N in the series circuit.
2. The intermittent charging system of claim 1, wherein the switch comprises a plurality of switch control sub-switches corresponding to the batteries in a one-to-one manner, and the switch control sub-switches comprise a series sub-switch and a parallel sub-switch, one end of the series sub-switch is connected in series with the corresponding battery, the other end of the series sub-switch is connected in parallel with the corresponding parallel sub-switch, and the other end of the parallel sub-switch is connected in parallel with the corresponding battery.
3. The intermittent charging method as claimed in claim 2, comprising the steps of:
(1) the battery capacity detection unit detects the residual capacity of each battery, if the residual capacity of all the batteries is less than the rated capacity, the step (2) is carried out, if the residual capacity of all the batteries is equal to the rated capacity, the step (5) is carried out,
(2) the battery capacity sequencing unit sequences the residual electric quantity of all batteries from small to large;
(3) closing the series sub-switches corresponding to the batteries sorted in the range of 1-M and opening the parallel sub-switches, opening the series sub-switches corresponding to the batteries sorted in the range of M +1-M + N and closing the parallel sub-switches, and starting a charging power supply to charge the batteries;
(4) repeatedly performing steps (1) - (3) every T seconds;
(5) and turning off the charging power supply and stopping charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947167.9A CN113517745A (en) | 2021-08-18 | 2021-08-18 | Intermittent charging system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947167.9A CN113517745A (en) | 2021-08-18 | 2021-08-18 | Intermittent charging system and method |
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| Publication Number | Publication Date |
|---|---|
| CN113517745A true CN113517745A (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110947167.9A Pending CN113517745A (en) | 2021-08-18 | 2021-08-18 | Intermittent charging system and method |
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| CN (1) | CN113517745A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6373226B1 (en) * | 1999-07-30 | 2002-04-16 | Sanyo Electric Co., Ltd. | Method of controlling discharge of a plurality of rechargeable batteries, and battery assembly |
| CN106972583A (en) * | 2017-06-08 | 2017-07-21 | 安徽康力节能电器科技有限公司 | A kind of battery set charge/discharge control system |
| CN107887660A (en) * | 2017-10-18 | 2018-04-06 | 湖北美洋汽车工业有限公司 | A kind of automatic adjusument electrokinetic cell system |
| CN110048487A (en) * | 2019-05-16 | 2019-07-23 | 清华大学 | A kind of control method and its system of battery charging and discharging |
-
2021
- 2021-08-18 CN CN202110947167.9A patent/CN113517745A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6373226B1 (en) * | 1999-07-30 | 2002-04-16 | Sanyo Electric Co., Ltd. | Method of controlling discharge of a plurality of rechargeable batteries, and battery assembly |
| CN106972583A (en) * | 2017-06-08 | 2017-07-21 | 安徽康力节能电器科技有限公司 | A kind of battery set charge/discharge control system |
| CN107887660A (en) * | 2017-10-18 | 2018-04-06 | 湖北美洋汽车工业有限公司 | A kind of automatic adjusument electrokinetic cell system |
| CN110048487A (en) * | 2019-05-16 | 2019-07-23 | 清华大学 | A kind of control method and its system of battery charging and discharging |
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Address after: 610000 1601, building 13, No. 599, middle section of Yizhou Avenue, high tech Zone, Chengdu, Sichuan Applicant after: Chengdu Xinqi Intelligent Technology Co.,Ltd. Address before: 610000 1601, building 13, No. 599, middle section of Yizhou Avenue, high tech Zone, Chengdu, Sichuan Applicant before: Sichuan Zhongqing Xuanyu Technology Co.,Ltd. |