CN203150676U - Overcharge-preventing lithium ion battery pack - Google Patents
Overcharge-preventing lithium ion battery pack Download PDFInfo
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- CN203150676U CN203150676U CN2013200874904U CN201320087490U CN203150676U CN 203150676 U CN203150676 U CN 203150676U CN 2013200874904 U CN2013200874904 U CN 2013200874904U CN 201320087490 U CN201320087490 U CN 201320087490U CN 203150676 U CN203150676 U CN 203150676U
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- Prior art keywords
- lithium ion
- ion battery
- loop
- overcharge
- battery
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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)
Abstract
The utility model discloses an overcharge-preventing lithium ion battery pack, which comprises a plurality of lithium ion batteries (1), wherein the lithium ion battery pack is connected with the battery charging circuit (2), and the battery charging circuit (2) is communicated with an external power supply; the battery charging circuit (2) is wound on the outer wall of the lithium ion battery pack; and an automatic charging circuit cut-off structure is arranged on and/or at the outer part of of the battery charging circuit (2). The overcharge-preventing lithium ion battery pack disclosed by the utility model has the beneficial effects that when overcharge of a lithium ion battery occurs, the charging circuit is timely cut off without using an overcharge-protection integrated circuit IC, thus achieving an effect of effectively preventing overcharge, also reducing the production cost of the lithium ion battery, increasing the production quality of the battery, reducing the defect rate, improving the battery product using experience of users, being beneficial to improving the market competition of the lithium ion battery, and having great production practice significance.
Description
Technical field
The utility model relates to the battery technology field, particularly relates to a kind of anti-overcharge lithium ion battery group.
Background technology
At present, advantages such as lithium ion battery has the specific energy height, recycles often, memory time is long, not only on portable electric appts, be used widely as mobile phone, Digital Video and laptop computer, and be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool.
For lithium ion battery and lithium ion battery group, it relies on integrated circuit (IC) to carry out electronic circuit control in the protection that overcharges substantially, and is anti-overcharge respond well, has obtained the generally approval of industry.At present, in the battery consumer product area, lithium ion battery is the use of single battery mostly, and the IC quantity that it overcharges protection needs is 1, and its cost can be accepted, and effect can be satisfied the demand.But, develop into main flow from now at lithium-ion-power cell, under many occasions, need be with a plurality of battery series connection or the use that is connected in parallel, in order to realize the protection of overcharging, this just needs a plurality of IC parts and complicated layout, internal communication, the whole cost price height of the safeguard structure that overcharges, the failure rate height, reliability is low, has caused the expensive of lithium-ion-power cell and low reliability.Especially in an important applied field of electrokinetic cell: LEV (Light Electric Vehicle) (being mainly electric bicycle, battery-operated motor cycle etc.), the expensive and low reliability of lithium ion battery and lithium ion battery group has restricted the application of lithium ion battery in LEV (Light Electric Vehicle).
In view of this, if can also guarantee the anti-overcharge property of battery, the reliability of lifting lithium ion battery group in the automobile-used lithium ion battery group cancellation of light-weight electric IC parts, that will directly promote lithium ion battery in the extensive application of LEV (Light Electric Vehicle).
Therefore, press for a kind of technology of developing at present, it can in time disconnect charge circuit when lithium ion battery overcharges, play anti-overcharge effective effect, reduces the production cost of lithium ion battery simultaneously, improves the reliability of battery product.
The utility model content
In view of this, the purpose of this utility model provides a kind of anti-overcharge lithium ion battery group, it can in time disconnect charge circuit when lithium ion battery overcharges, play anti-overcharge effective effect, reduce the production cost of lithium ion battery simultaneously, improve the quality of production of battery, reduce fraction defective, the battery product that strengthens the user uses impression, be conducive to improve the market competitiveness of lithium ion battery, be of great practical significance.
For this reason, the utility model provides a kind of anti-overcharge lithium ion battery group, and described lithium ion battery group comprises a plurality of lithium ion batteries, and described lithium ion battery group is connected with the battery charge loop, and described battery charge loop is connected with external power source;
Described battery charge loop is wrapped on the outer wall of described lithium ion battery group, on the described battery charge loop and/or outer setting automatic disconnection charge circuit structure is arranged.
Wherein, the automatic disconnection charge circuit structure on the described battery charge loop is specially: described battery charge loop comprises first loop feature and second loop feature, is flexible connection between described first loop feature and second loop feature.
Wherein, described first loop feature and second loop feature are plugged on together.
Wherein, the bottom of described first loop feature is provided with a conductive plug, and the top of described second loop feature is provided with a conductive socket, and described conductive plug is plugged in the described conductive socket.
Wherein, the automatic disconnection charge circuit structure of outside, described battery charge loop is specially: be set with at least one disconnecting members directly over the described battery charge loop.
Wherein, described disconnecting members be positioned at described lithium ion battery group top the battery charge loop directly over.
Wherein, described disconnecting members is the object that the bottom has sawtooth or the edge of a knife.
The technical scheme that is provided by above the utility model as seen; compared with prior art; the utility model provides a kind of anti-overcharge lithium ion battery group; it need not to use the additives for overcharge protection integrated circuit (IC); namely can be when lithium ion battery overcharges; in time disconnect charge circuit; play anti-overcharge effective effect; reduce the production cost of lithium ion battery simultaneously; improve the quality of production of battery, reduce fraction defective, the battery product that strengthens the user uses impression; be conducive to improve the market competitiveness of lithium ion battery, be of great practical significance.
Description of drawings
The structural representation sketch of a kind of anti-overcharge lithium ion battery group embodiment one that Fig. 1 provides for the utility model;
The front view of a kind of anti-overcharge lithium ion battery group embodiment two that Fig. 2 provides for the utility model;
The vertical view of a kind of anti-overcharge lithium ion battery group embodiment two that Fig. 3 provides for the utility model;
Among the figure: 1 is lithium ion battery, and 3 is the battery charge loop, and 3 is first loop feature, and 4 is second loop feature, and 31 is conductive plug, and 41 is conductive socket, and 5 is disconnecting members.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1 to Fig. 3, the utility model provides a kind of anti-overcharge lithium ion battery group, described lithium ion battery group comprises horizontal positioned a plurality of lithium ion batteries 1 together from top to bottom, described a plurality of lithium ion battery 1 series connection and/or the formation lithium ion battery group that is parallel together.
In the utility model; described lithium ion battery group comprises at least one lead with battery charge loop 2() be connected; described battery charge loop 2 is connected with external power source (as home-use 22V civil power); described battery charge loop 2 vertically is wrapped on the outer wall of described lithium ion battery group; on the described battery charge loop 2 and/or outer setting automatic disconnection charge circuit structure is arranged; that is to say; described battery charge loop 2 all can arrange automatic disconnection charge circuit structure flexibly inside and outside; when battery expands because overcharging; by using automatic disconnection charge circuit structure on the battery charge loop 2 and the automatic disconnection charge circuit structure of 2 outsides, battery charge loop simultaneously, can realize dual additives for overcharge protection to lithium ion battery.
For the utility model, need to prove that described lithium ion battery 1 is preferably square lithium ion battery, in addition, can also circular lithium ion battery.
In the utility model, on the specific implementation, referring to Fig. 1, can be provided with automatic disconnection charge circuit structure on the described battery charge loop 2, when the lithium ion battery group expands owing to overcharging, acquire a certain degree if expand, then make automatic disconnection charge circuit structure work, realize disconnecting the purpose in battery charge loop 2.Concrete structure is: described battery charge loop 2 comprises first loop feature 3 and second loop feature 4, described first loop feature 3 and second loop feature 4 are plugged on together, certainly, described first loop feature 3 and second loop feature 4 can also adopt clamping etc., and other are movably connected, as long as when being subjected to enough big external pull, can described first loop feature 3 of automatic disconnection and second loop feature 4 between connection get final product.
Therefore, for lithium ion battery group shown in Figure 1, when lithium ion battery 1 at the initial stage of overcharging, the gas production of lithium ion battery 1 is less, cell safety index height, first loop feature 3 and second loop feature 4 in described battery charge loop 2 are movably connected, battery charge loop 2 operate as normal, and the lithium ion battery operation is normal.And after the lithium ion battery group is owing to a period of time of overcharging; the gas production of battery increases; the cell safety index descends; battery takes place obviously to expand; the battery charge loop 2 that is wrapped on the lithium ion battery group outer wall will be subjected to bigger outward expansion force; make described first loop feature 3 and second loop feature 4 be subjected to bigger external pull; when this external pull acquires a certain degree; described first loop feature 3 and second loop feature 4 can't keep inserting state again; described first loop feature 3 disconnects with second loop feature 4 and being connected; thereby described battery charge loop 2 is disconnected; no longer the lithium ion battery group is charged; thereby realize the additives for overcharge protection to the lithium ion battery group, the battery explosion of having avoided lithium ion battery to cause owing to excessive overcharge, security incident such as on fire.
On the specific implementation, the bottom of described first loop feature 3 is provided with a conductive plug 31, the top of described second loop feature 4 is provided with a conductive socket 41, described conductive plug 31 is plugged in the described conductive socket 41, thereby make the conduction perforation mutually between loop feature 3 and second loop feature 4 of winning, guarantee that battery charge loop 2 can form the galvanic circle, normally charges to the lithium ion battery group.
Need to prove that for lithium ion battery, it can produce gas when overcharging, and along with the time of overcharging lengthens, the gas of producing increases, can make the outward appearance generation marked inflation of lithium ion battery.
For the utility model, need to prove that user and battery production producer can be by regulating the grafting elasticity between first loop feature 3 and second loop feature 4, regulate lithium ion battery acceptable degree when expanding because overcharging.
In the utility model, on the specific implementation, referring to Fig. 2, Fig. 3, the outside in described battery charge loop 2 also can be provided with automatic disconnection charge circuit structure, when the lithium ion battery group expands owing to overcharging, acquire a certain degree if expand, have an effect with outside automatic disconnection charge circuit structure promoting battery charge loop 2, make battery charge loop 2 by the automatic disconnection charge circuit connection that structure disconnects of outside, realize disconnecting the purpose in battery charge loop 2.Concrete structure is: be positioned at described lithium ion battery group top described battery charge loop 2 directly over be set with this disconnecting members 5 of at least one disconnecting members 5(occurrence positions change along with the expansion of lithium ion battery group).
Therefore, for Fig. 2, lithium ion battery group shown in Figure 3, when lithium ion battery 1 at the initial stage of overcharging, the gas production of lithium ion battery 1 is less, cell safety index height, lithium ion battery 1 drive battery charge loop 2 to begin to move upward, further and disconnecting members 5 between distance, at this moment battery charge loop 2 operate as normal, the lithium ion battery operation is normal.And after the lithium ion battery group is owing to a period of time of overcharging; the gas production of battery increases; the cell safety index descends; battery takes place obviously to expand; the battery charge loop 2 that the lithium ion battery group promotes to twine on its outer wall expands outwardly; the battery charge loop 2 that wherein is positioned at described lithium ion battery group top moves upward always; battery charge loop 2 can be pushed with described disconnecting members 5; under the effect of extruding force; described battery charge loop 2 is disconnected parts 5 and cuts off; no longer the lithium ion battery group is charged; thereby realize the additives for overcharge protection to the lithium ion battery group; the battery explosion of having avoided lithium ion battery to cause owing to excessive overcharge, security incident such as on fire.
On the specific implementation, described disconnecting members 5 is specifically as follows the saw blade that a bottom has sawtooth, also can have object sharp sawtooth or the edge of a knife, that can cut off described battery charge loop 2 for other bottoms.
Need to prove, for described disconnecting members 5, its be not limited to be fixedly set in the described battery charge loop 2 that is positioned at described lithium ion battery group top directly over, can also be arranged at 2 optional positions, described battery charge loop directly over.
For the utility model, also need to prove, user and battery production producer can be by regulating in the battery charge loop 2 at described lithium ion battery group top and the distance between the disconnecting members 5, regulate lithium ion battery acceptable degree when expanding because overcharging.
Therefore; the lithium ion battery group that provides for the utility model; it structurally need not to use the additives for overcharge protection integrated circuit (IC); mechanical mechanism by science design automatic disconnection charge circuit; can be when lithium ion battery overcharges; in time disconnect charge circuit, play anti-overcharge effective effect.
In sum; compared with prior art; a kind of anti-overcharge lithium ion battery group that the utility model provides; it need not to use the additives for overcharge protection integrated circuit (IC); namely can be when lithium ion battery overcharges; in time disconnect charge circuit; play anti-overcharge effective effect; reduce the production cost of lithium ion battery simultaneously; improve the quality of production of battery, reduce fraction defective, the battery product that strengthens the user uses impression; be conducive to improve the market competitiveness of lithium ion battery, be of great practical significance.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. an anti-overcharge lithium ion battery group is characterized in that, described lithium ion battery group comprises a plurality of lithium ion batteries (1), and described lithium ion battery group is connected with battery charge loop (2), and described battery charge loop (2) is connected with external power source;
Described battery charge loop (2) is wrapped on the outer wall of described lithium ion battery group, and go up in described battery charge loop (2) and/or outer setting has automatic disconnection charge circuit structure.
2. lithium ion battery group as claimed in claim 1, it is characterized in that, automatic disconnection charge circuit structure on the described battery charge loop (2) is specially: described battery charge loop (2) comprises first loop feature (3) and second loop feature (4), is flexible connection between described first loop feature (3) and second loop feature (4).
3. lithium ion battery group as claimed in claim 2 is characterized in that, described first loop feature (3) and second loop feature (4) are plugged on together.
4. lithium ion battery group as claimed in claim 3, it is characterized in that, the bottom of described first loop feature (3) is provided with a conductive plug (31), the top of described second loop feature (4) is provided with a conductive socket (41), and described conductive plug (31) is plugged in the described conductive socket (41).
5. lithium ion battery group as claimed in claim 1, it is characterized in that the outside automatic disconnection charge circuit structure in described battery charge loop (2) is specially: be set with at least one disconnecting members (5) directly over the described battery charge loop (2).
6. lithium ion battery group as claimed in claim 5 is characterized in that, described disconnecting members (5) be positioned at described lithium ion battery group top battery charge loop (2) directly over.
7. lithium ion battery group as claimed in claim 5 is characterized in that, described disconnecting members (5) has the object of sawtooth or the edge of a knife for the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200874904U CN203150676U (en) | 2013-02-27 | 2013-02-27 | Overcharge-preventing lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200874904U CN203150676U (en) | 2013-02-27 | 2013-02-27 | Overcharge-preventing lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150676U true CN203150676U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200874904U Expired - Lifetime CN203150676U (en) | 2013-02-27 | 2013-02-27 | Overcharge-preventing lithium ion battery pack |
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| Country | Link |
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| CN (1) | CN203150676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138023A (en) * | 2013-02-27 | 2013-06-05 | 杭州万好万家动力电池有限公司 | Anti-overcharge lithium-ion battery pack |
-
2013
- 2013-02-27 CN CN2013200874904U patent/CN203150676U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138023A (en) * | 2013-02-27 | 2013-06-05 | 杭州万好万家动力电池有限公司 | Anti-overcharge lithium-ion battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190423 Address after: No. 6 South China Road, Liaocheng Economic and Technological Development Zone, Shandong Province, 252000 Patentee after: SHANDONG TAIYI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 311106 No. 102-5, 101 Shunda Road, Qianjiang Economic Development Zone, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU PEOPLE BATTERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 252000 No. 27 Weisi Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province Patentee after: SHANDONG TAIYI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: No. 6 South China Road, Liaocheng Economic and Technological Development Zone, Shandong Province, 252000 Patentee before: SHANDONG TAIYI NEW ENERGY TECHNOLOGY CO.,LTD. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |