GB2501904A - Charging a plurality of parallel connected batteries with parallel connected chargers - Google Patents
Charging a plurality of parallel connected batteries with parallel connected chargers Download PDFInfo
- Publication number
- GB2501904A GB2501904A GB1208131.1A GB201208131A GB2501904A GB 2501904 A GB2501904 A GB 2501904A GB 201208131 A GB201208131 A GB 201208131A GB 2501904 A GB2501904 A GB 2501904A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charger
- parallel
- secondary batteries
- charging
- chargers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000011255 nonaqueous electrolyte Substances 0.000 claims abstract description 20
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 238000007796 conventional method Methods 0.000 description 2
Classifications
-
- 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
-
- H02J7/0022—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries 21, 22, (e.g. lithium ion) with parallel-connected chargers 30, 40, supplying equal charging current, wherein a second charger which is parallel connected to the first charger is additionally arranged to ensure that the charge process can be continued, and the charge process can be performed without battery management system.
Description
DEVICE AND METHOD FOR CHARGING A PLURALITY OF
PARALLEL-CONNECTED NON-AQUEOUS ELECTROLYTE
SECONDARY BATTERIES WITH PARALLEL-CONNECTED CHARGERS
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to non-aqueous electrolyte secondary batteries, and more particularly to a device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers.
Description of the Prior Art
Referring to Fig. I, every serially-connected non-aqueous electrolyte secondary battery system (for instance, lithium-ion secondary battery, which is called secondary battery in the following descriptions) is provided with an expensive BMS (battery management systeni) ii a to niaintain the potential difference between the secondary batteries 12a at a certain value and to prevent overcharge and overdischarge.
The BMS 1 Ia generally serves to compensate the integrity of the secondary batteries 12a and maintain charge balance. During the charge process, the BMS 1 Ia, the secondary batteries 12a, and the charger 13a are connected in series, when any of the BMS Ila and the charger 13a or anyone of the secondary batteries 12a, is broken, all the secondary batteries I 2a cannot be charged.
Fig. 2 shows that a charger 13b is used to charge a single secondary battery 12b which is equipped with a BMS I Ib, and this arrangement also suffers the disadvantages of the above serially-connected non-aqueous electrolyte secondary battery system.
The present invention has arisen to mitigate and/or obviate tile afore-described disadvantages.
SUMMARY OF THE TNVENTTON
The primary object of the present invention is to provide a device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers, wherein a second charger which parallel connected to the first charger is additionally arranged to ensure that the charge process can be continued, and the charge process can be performed without BMS.
To achieve the above object, a method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers comprises using a first charger to charge the plurality of parallel connected non-aqueous electrolyte secondary batteries, the method is characterized in that: a second charger which has the same charge current as the first charger and is parallel connected to the first charger to average a total output current.
A charge device for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers comprises a plurality of secondary batteries and a first charger. The plurality of secondary batteries each include a positive terminal and a negative terminal, the negative terminals of the secondary batteries are electrically connected to one another, and the positive terminals of the secondary batteries being electrically connected to one another. The first charger has a first positive output terminal electrically connected to the positive terminals, and a negative output terminal electrically connected to the negative terminals. The charge device is characterized in that: a second charger which has tile same charge current as the first charger is additionally provided and includes a second output terminal electrically connected to the first positive output terminal, and a second negative output terminal electrically connected to the first negative output terminal.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a conventional method for charging a plurality of serially-connected non-aqueous electrolyte secondary batteries with a single charger and a BMS; Fig. 2 shows a conventional method for charging non-aqueous electrolyte secondary batteries with a single charger and a BMS; Fig. 3 shows a method in accordance with the present invention for charging two parallel-connected non-aqueous electrolyte secondary batteries with two parallel-connected chargers; and Fig. 4 shows a method in accordance with the present invention for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with a plurality of parallel-connected chargers.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment hi accordance with the present invention.
It is to be noted that the non-aqueous electrolyte secondary battery as mentioned in the following embodiment is a lithium-ion secondary battery which is abbreviated as secondary battery.
Referring to Fig. 3, a device for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers in accordance with the present invention comprises: two secondary batteries 21, 22, a first charger 30, and a second charger 40.
The two secondary batteries 21, 22 each include a positive terminal 211, 221 and a negative terminal 212, 222, and the negative terminals 212, 222 are electrically connected so as to make the secondary batteries 2 I, 22 parallel-connected to each otheii The first charger 30 includes a first positive output terminal 31 to be electrically cormected to the positive terminals 211, 221, and a negative output terminal 32 to be electrically connected to the negative terminals 212, 222, so that the first charger 30 is parallel connected to the two secondary batteries 21, 22.
The present invention is characterized in that: the present invention is additionally provided with a second charger 40 which has the same charge current as the first charger 30 and includes a second output terminal 41 for electrically connecting to the first positive output terminal 3 1, and a second negative output terminal 42 electrically connected to the first negative output terminal 32.
A method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers hi accordance with the present invention is such that the first charger 30 is used to charge the two parallel connected secondary batteries 21, 22. The second charger 40 is parallel connected to the first charger 30 to average tile total output current. For example, iii this embodiment, the total output current is one unit, the output current of the first and second chargers 30, 40 is 0.5 unit, respectively, and then the total one unit output current is transmitted to the secondary batteries 21, 22 to perform charge process.
When any of the first and second chargers 30, 40 or any of the secondary batteries 21, 22 is broken, or when one of the first and second chargers 30, 40 and one of the secondary batteries 21, 22 are broken, the other charger (the first or the second charger 30, 40) which is not broken and can work properly is still able to charge the other secondary battery (21 or 22) which is not broken and can work properly. Therefore, it ensures that charge process can be continued, and the charge process can be performed without BMS.
When one of the first and second chargers 30, 40 is broken, the other charger (30 or 40) which is not broken will simultaneously charge the two secondary batteries 21, 22, and in this state, the charge process lasts longet When one of the secondary batteries (21 or 22) is broken, the first and second chargers 30, 40 will simultaneously charge the other secondary battery (21 or 22) which is not broken, and the charge process takes less time.
When one of the first and second chargers 30, 40 and one of the secondary batteries 21, 22 are broken, the other charger (the first or the second charger 30, 40) which is not broken will charge the other secondary battery (21 or 22) which is not broken.
Referring to Fig. 4, another embodiment of the present invention is shown and additionally provided with a plurality of chargers 50 and secondary batteries 23 based on Fig. 3. The chargers 50 are parallel connected to the first and second chargers 30, 40, namely, the chargers 50 each include a positive output terminal 51 electrically connected to the first and second positive output terminals 31, 41, and a negative output terminal 52 electrically connected to the first and second negative output terminals 32, 42. The secondary batteries 23 are parallel connected to the secondary batteries 21, 22, and each have a positive terminal 231 electrically connected to the positive terminals 211, 221, and a negative tenninal 232 electrically connected to the negative terminals 212, 222.
While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from tile scope of the present invention.
Claims (4)
- WHAT IS CLAIMED 15: 1. A method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers comprising using a first charger to charge the plurality of parallel connected non-aqueous electrolyte secondary batteries, the method being characterized iii that: a second charger which has the same charge current as the first charger and is parallel connected to the first charger to average a total output current.
- 2. A method for charging a plurality of batteries substantially as hereinbefore described with reference to Figures 3 and 4 of the accompanying drawings.
- 3. A device for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers comprising: a plurality of secondary batteries each including a positive terminal and a negative temiinal, the negative terminals of the secondary batteries being electrically connected to one another, and the positive terminals of the secondary batteries being electrically connected to one another; a first charger with a first positive output terminal electrically connected to the positive terminals, and a negative output terminal electrically connected to the negative terminals; the device being characterized in that: a second charger which has the same charge current as the first charger is additionally provided and includes a second output terminal electrically connected to the first positive output terminal, and a second negative output terminal electrically connected to the first negative output tenninal.
- 4. A device for charging a plurality of batteries substantially as hereinbefore described with reference to and as shown in Figures 3 and 4 of the accompanying drawings.S
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1208131.1A GB2501904A (en) | 2012-05-10 | 2012-05-10 | Charging a plurality of parallel connected batteries with parallel connected chargers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1208131.1A GB2501904A (en) | 2012-05-10 | 2012-05-10 | Charging a plurality of parallel connected batteries with parallel connected chargers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201208131D0 GB201208131D0 (en) | 2012-06-20 |
| GB2501904A true GB2501904A (en) | 2013-11-13 |
Family
ID=46396763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1208131.1A Withdrawn GB2501904A (en) | 2012-05-10 | 2012-05-10 | Charging a plurality of parallel connected batteries with parallel connected chargers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2501904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3926786A1 (en) * | 2020-06-18 | 2021-12-22 | Globe (Jiangsu) Co., Ltd. | Charge control circuit, charging device and charging system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129337A1 (en) * | 2007-04-24 | 2008-10-30 | Fazakas Andras | Circuit arrangement for the parallel operation of battery chargers |
| US20100156339A1 (en) * | 2008-12-18 | 2010-06-24 | Hoffman Roger L | Portable solar battery charger |
| US20120038324A1 (en) * | 2010-08-16 | 2012-02-16 | Lear Corporation | Dual-charger system |
-
2012
- 2012-05-10 GB GB1208131.1A patent/GB2501904A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129337A1 (en) * | 2007-04-24 | 2008-10-30 | Fazakas Andras | Circuit arrangement for the parallel operation of battery chargers |
| US20100156339A1 (en) * | 2008-12-18 | 2010-06-24 | Hoffman Roger L | Portable solar battery charger |
| US20120038324A1 (en) * | 2010-08-16 | 2012-02-16 | Lear Corporation | Dual-charger system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3926786A1 (en) * | 2020-06-18 | 2021-12-22 | Globe (Jiangsu) Co., Ltd. | Charge control circuit, charging device and charging system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201208131D0 (en) | 2012-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |