CN201150006Y - Charging-discharging device for lithium ion battery set - Google Patents
Charging-discharging device for lithium ion battery set Download PDFInfo
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- CN201150006Y CN201150006Y CNU2007201572696U CN200720157269U CN201150006Y CN 201150006 Y CN201150006 Y CN 201150006Y CN U2007201572696 U CNU2007201572696 U CN U2007201572696U CN 200720157269 U CN200720157269 U CN 200720157269U CN 201150006 Y CN201150006 Y CN 201150006Y
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- lithium ion
- ion battery
- discharge
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a charge and discharge device for lithium ion battery units. The charge and discharge device comprises at least two lithium ion battery units, a charge and discharge socket, a charging plug and a discharging plug, wherein, the charging plug ensures that all lithium ion battery units are connected in parallel and the function of independent charge to each lithium ion battery unit is realized, the discharging plug ensures that all lithium ion battery units are connected in series and the function of series discharge for the lithium ion battery unit is realized, and the switching between the series discharge and the parallel charge is free, the uniformity of the lithium ion battery unit is improved, the service life of the lithium ion battery unit is prolonged, and the charge and discharge device is economical, highly efficient and practical.
Description
Technical field
The utility model relates to the charge and discharge device that a kind of lithium ion battery group is used, and belongs to field of power supplies.
Background technology
In recent years, along with the raising of lithium ion battery manufacturing technology and the decline of production cost, the lithium ion battery group has been widely used in the army and the people fields such as aerospace equipment, mobile communication base station, motor vehicle as a kind of secondary energy sources that drive usefulness, yet present lithium ion battery group charge-discharge control circuit both domestic and external all is to adopt the whole total voltage of battery pack as the control foundation, belongs to the low level management pattern.
Suppose that certain battery pack has m cell to be composed in series, then the nominal voltage of this battery pack is 3.6V * m, and charging voltage total under the perfect condition must not be higher than 4.2V * m, and total discharge voltage must not be lower than 2.6V * m; In fact, consider the otherness of cell, in order to ensure safety, batteries charging stops voltage and may be set at about 3.8V * m, discharge stops voltage and may be set at about 3V * m, should be m 1.6V (=4.2V-2.6V) practical amplitude but lock water be m 0.8V (=3.8V-3.0V) about, this has just wasted only about half of resource virtually, both reduced the continuation of the journey index after each charging, be difficult to also guarantee that whole battery group reaches life expectancy, even cause the loss of scrapping in advance, wasted the upper limit 1/4 at least, lower limit 1/4 adds up to about 1/2 resource.Must " quoted in broken sentences " in order to ensure cell safety with middle, therefore form the common fault of battery pack " undercharge; discharge is not enough ", even when each cell performance is consistent relatively in the battery pack when just having dispatched from the factory, the abundance that it is just right that low level management can not be guaranteed cell is put enough; After using a period of time, comparatively evident difference appears in cell, and low level management is just more powerless, and this ubiquitous management of charging and discharging is not in place just to have become nothing to be surprised at, habitual drawback.
The utility model content
Technical problem to be solved in the utility model provides a kind of uniformity of improving the lithium ion battery group, the charge and discharge device of the lithium ion battery group in the useful life of prolongation lithium ion battery group.
For solving the problems of the technologies described above, the technical solution of the utility model is: the charge and discharge device of lithium ion battery group, comprise at least two lithium ionic cell units, be arranged on the interface that discharges and recharges on the lithium ion battery group, can select to be plugged on described charging plug or the discharge plug that discharges and recharges in the interface, wherein:
Described lithium ionic cell unit is provided with independently of one another, and the both positive and negative polarity of each battery unit is electrically connected to separately respectively on the counter electrode that discharges and recharges interface of lithium ion battery group;
Described charging plug has the pin of answering with the described electrode pair that discharges and recharges in the interface, and total positive pole and total negative pole that described charging plug inside is electrically connected to charging plug respectively with the positive pole and the negative pole of all battery units, total positive pole of described charging plug and total negative pole are connected to charging system;
Described discharge plug has the pin of answering with the electrode pair that discharges and recharges in the interface, and described discharge plug inside is serially connected the positive pole and the negative pole of all battery units respectively successively, draw total positive pole and total negative pole of discharge plug respectively with the vacant pin in first battery unit and end cell unit, total positive pole of described discharge plug and total negative pole are connected to using electricity system.
As a kind of improvement, described each lithium ionic cell unit comprises that two only reach cell in parallel more than two.
Owing to adopted technique scheme, the charge and discharge device of lithium ion battery group, comprise at least two lithium ionic cell units, be arranged on the interface that discharges and recharges on the lithium ion battery group, can select to be plugged on described charging plug or the discharge plug that discharges and recharges in the interface, wherein: described lithium ionic cell unit is provided with independently of one another, and the both positive and negative polarity of each battery unit is electrically connected to separately respectively on the counter electrode that discharges and recharges interface of lithium ion battery group; Described charging plug has the pin of answering with the described electrode pair that discharges and recharges in the interface, and total positive pole and total negative pole that described charging plug inside is electrically connected to charging plug respectively with the positive pole and the negative pole of all battery units, total positive pole of described charging plug and total negative pole are connected to charging system; Described discharge plug has the pin of answering with the electrode pair that discharges and recharges in the interface, and described discharge plug inside is serially connected the positive pole and the negative pole of all battery units respectively successively, draw total positive pole and total negative pole of discharge plug respectively with the vacant pin in first battery unit and end cell unit, total positive pole of described discharge plug and total negative pole are connected to using electricity system.Charging plug makes all lithium ionic cell unit parallel connections, realized function to the independent charging of each lithium ionic cell unit, the discharge plug makes all lithium ionic cell unit series connection, realized the function of lithium ionic cell unit discharged in series, and discharged in series and charged in parallel switching freedom, improved the uniformity of lithium ion battery group, prolonged the useful life of lithium ion battery group, the utility model economy, efficient, practical.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model embodiment charging plug;
Fig. 2 is the discharge electrical schematic diagram of plug of the utility model embodiment;
Fig. 3 is the electrical schematic diagram of the utility model embodiment battery pack;
Fig. 4 is the electrical schematic diagram of the utility model embodiment when charging;
Fig. 5 is the electrical schematic diagram of the utility model embodiment when discharging.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the charge and discharge device of lithium ion battery group, comprise three lithium ionic cell units 11, described each lithium ionic cell unit 11 comprises the cell of three parallel connections, be arranged on and discharge and recharge interface 12 on the lithium ion battery group 1, can select to be plugged on described charging plug 2 or the discharge plug 3 that discharges and recharges in the interface 12, wherein:
Described lithium ionic cell unit 11 is provided with independently of one another, and the both positive and negative polarity of each battery unit is electrically connected to separately respectively on the counter electrode that discharges and recharges interface 12 of lithium ion battery group 1.
Simultaneously referring to Fig. 4, described charging plug 2 has the pin 21 of answering with the electrode pair that discharges and recharges in the interface 12, and total positive pole and total negative pole that described charging plug 2 inside are electrically connected to charging plug 2 respectively with the positive pole and the negative pole of all battery units, total positive pole of described charging plug 2 and total negative pole are connected to charger; Realized function like this to the independent charging of each lithium ionic cell unit, make the charging current of each lithium ionic cell unit of flowing through in the charging process inconsistent, " bias current " phenomenon is promptly arranged, but a lithium ionic cell unit group can not occur can be to another lithium ionic cell unit charge condition, and, the charging current of each lithium ionic cell unit of flowing through is to distribute according to the charging state of lithium ionic cell unit separately automatically, originally the lithium ionic cell unit of undercharge can be automatically assigned to bigger charging current, original higher lithium ionic cell unit of charging state can be automatically assigned to less charging current, by the time during full charge, charging current just progressively reaches unanimity each lithium ionic cell unit basically.
As shown in Figure 5, described discharge plug 3 has the pin 31 of answering with the electrode pair that discharges and recharges in the interface 12, and described discharge plug 3 inside are serially connected the positive pole and the negative pole of all battery units respectively successively, draw total positive pole and total negative pole of discharge plug 3 respectively with the vacant pin in first battery unit and end cell unit, total positive pole of described discharge plug 3 and total negative pole are connected to using electricity system.This charging is in parallel, and the mode of discharge series connection has been improved the uniformity of lithium ion battery group, has prolonged the useful life of lithium ion battery group.
Present embodiment only is to give an example to of the present utility model; described ion battery unit 11 also can adopt single cell or adopt a plurality of cell parallel connections; these conversion are technical schemes that those skilled in the art can draw without creative work, also should be within protection range of the present utility model.
Claims (2)
1. the charge and discharge device of lithium ion battery group, comprise at least two lithium ionic cell units (11), be arranged on and discharge and recharge interface (12) on the lithium ion battery group (1), can select to be plugged on described charging plug (2) or the discharge plug (3) that discharges and recharges in the interface (12), it is characterized in that:
Described lithium ionic cell unit (11) is independently of one another to be provided with, and the both positive and negative polarity of each battery unit is electrically connected to separately respectively on the counter electrode that discharges and recharges interface (12) of lithium ion battery group;
Described charging plug (2) has the pin (21) of answering with the described electrode pair that discharges and recharges in the interface (12), and total positive pole and total negative pole that described charging plug (2) inside is electrically connected to charging plug (2) respectively with the positive pole and the negative pole of all battery units, total positive pole of described charging plug (2) and total negative pole are connected to charging system;
Described discharge plug (3) has the pin (31) of answering with the electrode pair that discharges and recharges in the interface (12), and described discharge plug (3) inside is serially connected the positive pole and the negative pole of all battery units respectively successively, draw total positive pole and total negative pole of discharge plug (3) respectively with the vacant pin in first battery unit and end cell unit, total positive pole of described discharge plug (3) and total negative pole are connected to using electricity system.
2. the charge and discharge device of lithium ion battery group as claimed in claim 1 is characterized in that: described each lithium ionic cell unit (11) comprises that two only reach cell in parallel more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201572696U CN201150006Y (en) | 2007-11-14 | 2007-11-14 | Charging-discharging device for lithium ion battery set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201572696U CN201150006Y (en) | 2007-11-14 | 2007-11-14 | Charging-discharging device for lithium ion battery set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201150006Y true CN201150006Y (en) | 2008-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201572696U Expired - Fee Related CN201150006Y (en) | 2007-11-14 | 2007-11-14 | Charging-discharging device for lithium ion battery set |
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| Country | Link |
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| CN (1) | CN201150006Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244307A (en) * | 2011-06-10 | 2011-11-16 | 江苏双登集团有限公司 | Charge mode of lead-acid storage battery for electric power-assisted vehicle |
| CN102611156A (en) * | 2012-03-13 | 2012-07-25 | 黄盛华 | Rechargeable battery pack |
| CN102673422A (en) * | 2012-05-30 | 2012-09-19 | 中国汽车技术研究中心 | Pure electric automobile energy system structure and vehicle energy storage control system thereof |
| WO2015180391A1 (en) * | 2014-05-30 | 2015-12-03 | 浙江明磊工具实业有限公司 | Battery pack charging/discharging system and method for electric tool, and electric tool |
-
2007
- 2007-11-14 CN CNU2007201572696U patent/CN201150006Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244307A (en) * | 2011-06-10 | 2011-11-16 | 江苏双登集团有限公司 | Charge mode of lead-acid storage battery for electric power-assisted vehicle |
| CN102611156A (en) * | 2012-03-13 | 2012-07-25 | 黄盛华 | Rechargeable battery pack |
| CN102673422A (en) * | 2012-05-30 | 2012-09-19 | 中国汽车技术研究中心 | Pure electric automobile energy system structure and vehicle energy storage control system thereof |
| CN102673422B (en) * | 2012-05-30 | 2015-09-16 | 中国汽车技术研究中心 | A kind of pure electric automobile energy system configuration and vehicles energy accumulating control system thereof |
| WO2015180391A1 (en) * | 2014-05-30 | 2015-12-03 | 浙江明磊工具实业有限公司 | Battery pack charging/discharging system and method for electric tool, and electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANDONG INCALCU ELECTRIC VEHICLE CO.,LTD. Assignor: Weifang Wina Environmental Protection Power Co., Ltd. Contract fulfillment period: 2008.11.30 to 2013.11.30 Contract record no.: 2009370000365 Denomination of utility model: Charging-discharging device for lithium ion battery set Granted publication date: 20081112 License type: Exclusive license Record date: 20090928 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.30 TO 2013.11.30; CHANGE OF CONTRACT Name of requester: SHANDONG INCALCU MOTOR VEHICLE CO., LTD. Effective date: 20090928 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20111114 |