CN204205570U - Four series lithium batteries and baffle thereof - Google Patents
Four series lithium batteries and baffle thereof Download PDFInfo
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- CN204205570U CN204205570U CN201420610436.8U CN201420610436U CN204205570U CN 204205570 U CN204205570 U CN 204205570U CN 201420610436 U CN201420610436 U CN 201420610436U CN 204205570 U CN204205570 U CN 204205570U
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- 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
Abstract
The utility model belongs to field of lithium, particularly relates to a kind of four series lithium batteries and baffle thereof.This four strings battery protecting plate; except comprising control IC and MOS switch element; also comprise the surface being close to battery battery core, when battery temperature higher than preset temperature T time, cut off output load, battery played to the temperature detect switch (TDS) of overheat protector effect and be serially connected in main charging and discharging circuit, when load current exceedes predetermined current I the fuse of the overcurrent protection that fuses, battery is played.Four series lithium batteries that the utility model provides and baffle thereof, add dual secondary protection function to battery, even if when control IC lost efficacy, also can realize the second protection to the gentle overcurrent of the mistake of battery, improve the coefficient of safety of battery.
Description
Technical field
The utility model belongs to field of lithium, particularly relates to a kind of four series lithium batteries and baffle thereof.
Background technology
Lithium ion battery, because have the advantages such as lightweight, capacity is large, memory-less effect, thus obtains and generally applies---and many digital equipments all have employed lithium ion battery and make power supply.The energy density of lithium ion battery is very high, and its capacity is 1.5 ~ 2 times of the Ni-MH battery of same weight, and has very low self-discharge rate.In addition, lithium ion battery does not almost have " memory effect " and do not contain the advantages such as noxious substance is also the major reason that it is used widely.Especially, lithium battery is also widely used as the power supply in electric tool and LED illumination device.
Finished product lithium battery composition mainly contains two large divisions, comprises battery core and baffle, and battery core is wound around or stacked, packaging, perfusion electrolyte primarily of positive plate, barrier film, negative plate, namely makes battery core after encapsulation.Lithium battery protection board is as the term suggests protection lithium battery is used; but existing baffle is all generally the turn-on and turn-off being controlled inner MOS switch by control IC; control MOS switch conduction in all normal situations; battery core and external circuit are linked up; and when battery core voltage or loop current exceed setting; control MOS switch OFF, thus realize the protection to the overcharge of lithium battery, overdischarge or main charging and discharging circuit overcurrent.The prerequisite realizing above-mentioned defencive function is control IC work normal operation itself, once control IC itself lost efficacy, whole lithium battery just can not realize defencive function effectively, can not meet the demand of user.
Utility model content
In view of this, first namely the purpose of this utility model is the baffle providing a kind of four series lithium batteries, and when losing efficacy with the control IC solving existing baffle, battery lost the technical problem of safeguard protection.
The baffle in the four crosstalk ponds that the utility model provides, comprise control IC and be serially connected in the MOS switch element in main charging and discharging circuit, as improvement, described baffle also comprises:
Be close to the surface of battery battery core, when battery temperature higher than preset temperature T time, the temperature detect switch (TDS) that cuts off output load, battery played to overheat protector effect; And
Be serially connected in main charging and discharging circuit, when load current exceedes predetermined current I the fuse of the overcurrent protection that fuses, battery is played.
Particularly, described temperature detect switch (TDS) is arranged between described MOS switch element and the P+ output of battery; Described fuse is arranged between described control IC and the P-output of battery.
Further, described baffle also comprises the current-limiting resistance R1 between a described control IC of series connection and earth connection, between the public connecting end that described fuse is connected on described current-limiting resistance R1 and control IC and the P-output of battery.
Particularly, described MOS switch element comprises two metal-oxide-semiconductors in parallel.
More specifically, described preset temperature T is 70 DEG C, and described predetermined current I is 6A, and described fuse is that 6A/1206 encapsulates fuse.
On the other hand, the utility model also provides a kind of four series lithium batteries.This four series lithium battery comprises battery core and baffle, and as improvement, the baffle of this lithium battery namely as mentioned above.
Four series lithium batteries that the utility model provides and baffle thereof, add dual secondary protection function to battery, even if when control IC lost efficacy, also can realize the second protection to the gentle overcurrent of the mistake of battery, improve the coefficient of safety of battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of four series of lithium cell protective boards that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the structural representation of four series of lithium cell protective boards that the utility model embodiment provides.For convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
Four series lithium batteries 300 are connected in series by four battery cores and form, and are respectively battery core 1-4.And the novel protected plate that the utility model embodiment provides, then the MOS switch element 200 including control IC 100 and be serially connected in main charging and discharging circuit.As improvement, this baffle also comprises a temperature detect switch (TDS) 400 and a fuse 500.Specifically, temperature detect switch (TDS) 400 is arranged the surface being close to battery battery core, when battery temperature is higher than preset temperature T, temperature detect switch (TDS) 400 performs an action, cut off output load, plays overheat protector effect to battery; And fuse 500 is serially connected in main charging and discharging circuit, when load current exceedes predetermined current I too, fuse 500 fuses, and plays overcurrent protection to battery.
In specific implementation process, temperature detect switch (TDS) 400 can be arranged between described MOS switch element 200 and the P+ output of battery as illustrated in fig. 1; Fuse 500 can be arranged between the P-output of control IC 100 and battery.Further, when specific implementation, described preset temperature T can be set to 70 DEG C, and when battery temperature is higher than 70 DEG C, this temperature detect switch (TDS) 400 carries out action, cuts off the load of output, plays overheat protector effect to battery.Predetermined current I can be set to 6A, and namely described fuse 500 adopts 6A/1206 to encapsulate fuse, and when load current is more than 6A, 6A/1206 encapsulates blown fuse, and disconnecting consumers, plays overcurrent protection to battery.
Continue see Fig. 1; as a preferred embodiment; baffle can also comprise the current-limiting resistance R1 between a series connection control IC 100 and earth connection; current-limiting resistance R1 is mainly for control IC 100 provides the detection voltage of a change in voltage produced because of curent change; one end ground connection of current-limiting resistance R1, the other end is connected on the public connecting end of fuse 500 and control IC 100.
Further, described MOS switch element 200 can comprise two metal-oxide-semiconductors 1 in parallel and metal-oxide-semiconductor 2.Further, the metal-oxide-semiconductor of MOS switch element 200 is all generally application in pairs.
On the other hand, the utility model also provides a kind of four series lithium batteries.This four series lithium battery comprises the battery core group and baffle that are connected in series by four battery cores, and described baffle comprises control IC and is serially connected in the MOS switch element in main charging and discharging circuit, and as improvement, described baffle also comprises:
Be close to the surface of battery core, when battery temperature higher than preset temperature T time, the temperature detect switch (TDS) that cuts off output load, battery played to overheat protector effect; And
Be serially connected in main charging and discharging circuit, when load current exceedes predetermined current I the fuse of the overcurrent protection that fuses, battery is played.
In specific implementation process, temperature detect switch (TDS) can be arranged between the P+ output of MOS switch element and battery; Fuse can be arranged between the P-output of control IC and battery.Further, when specific implementation, described preset temperature T can be set to 70 DEG C, and when battery temperature is higher than 70 DEG C, this temperature detect switch (TDS) carries out action, cuts off the load of output, plays overheat protector effect to battery.Predetermined current I can be set to 6A, and namely described fuse adopts 6A/1206 to encapsulate fuse, and when load current is more than 6A, 6A/1206 encapsulates blown fuse, and disconnecting consumers, plays overcurrent protection to battery.
As a preferred embodiment; the baffle of this four series lithium battery can also comprise the current-limiting resistance R1 between a series connection control IC and earth connection; current-limiting resistance R1 is mainly for control IC provides the detection voltage of a change in voltage produced because of curent change; one end ground connection of current-limiting resistance R1, the other end is connected on the public connecting end of fuse and control IC.Further, the metal-oxide-semiconductor of MOS switch element is all generally application in pairs.Further, described MOS switch element can comprise two metal-oxide-semiconductors in parallel.
Four series lithium batteries provided according to the utility model and baffle thereof, add dual secondary protection function to battery, even if when control IC lost efficacy, also can realize the second protection to the gentle overcurrent of the mistake of battery, improve the coefficient of safety of battery.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, although carried out comparatively detailed description with reference to previous embodiment to the utility model, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. four string battery protecting plates, comprise control IC and be serially connected in the MOS switch element in main charging and discharging circuit, it is characterized in that, described baffle also comprises:
Be close to the surface of battery battery core, when battery temperature higher than preset temperature T time, the temperature detect switch (TDS) that cuts off output load, battery played to overheat protector effect; And
Be serially connected in main charging and discharging circuit, when load current exceedes predetermined current I the fuse of the overcurrent protection that fuses, battery is played.
2. four string battery protecting plates as claimed in claim 1, it is characterized in that, described temperature detect switch (TDS) is arranged between described MOS switch element and the P+ output of battery; Described fuse is arranged between described control IC and the P-output of battery.
3. four string battery protecting plates as claimed in claim 2; it is characterized in that; described baffle also comprises the current-limiting resistance R1 between a described control IC of series connection and earth connection, between the public connecting end that described fuse is connected on described current-limiting resistance R1 and control IC and the P-output of battery.
4. four string battery protecting plates as claimed in claim 1, it is characterized in that, described MOS switch element comprises two metal-oxide-semiconductors in parallel.
5. four string battery protecting plates as claimed in claim 1, it is characterized in that, described preset temperature T is 70 DEG C, and described predetermined current I is 6A, and described fuse is that 6A/1206 encapsulates fuse.
6. four series lithium batteries, comprise battery core and baffle, and described baffle comprises control IC and is serially connected in the MOS switch element in main charging and discharging circuit, and it is characterized in that, described baffle also comprises:
Be close to the surface of battery core, when battery temperature higher than preset temperature T time, the temperature detect switch (TDS) that cuts off output load, battery played to overheat protector effect; And
Be serially connected in main charging and discharging circuit, when load current exceedes predetermined current I the fuse of the overcurrent protection that fuses, battery is played.
7. four series lithium batteries as claimed in claim 6, is characterized in that, described temperature detect switch (TDS) is arranged between described MOS switch element and the P+ output of battery; Described fuse is arranged between described control IC and the P-output of battery.
8. four series lithium batteries as claimed in claim 7; it is characterized in that; described baffle also comprises the current-limiting resistance R1 between a described control IC of series connection and earth connection, between the public connecting end that described fuse is connected on described current-limiting resistance R1 and control IC and the P-output of battery.
9. four series lithium batteries as claimed in claim 6, is characterized in that, described MOS switch element comprises two metal-oxide-semiconductors in parallel.
10. four series lithium batteries as claimed in claim 6, is characterized in that, described preset temperature T is 70 DEG C, and described predetermined current I is 6A, and described fuse is that 6A/1206 encapsulates fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610436.8U CN204205570U (en) | 2014-10-21 | 2014-10-21 | Four series lithium batteries and baffle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610436.8U CN204205570U (en) | 2014-10-21 | 2014-10-21 | Four series lithium batteries and baffle thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204205570U true CN204205570U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420610436.8U Active CN204205570U (en) | 2014-10-21 | 2014-10-21 | Four series lithium batteries and baffle thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359596A (en) * | 2017-07-26 | 2017-11-17 | 惠州市德赛电池有限公司 | A kind of battery core protection circuit |
| CN108666714A (en) * | 2018-08-02 | 2018-10-16 | 北京联动天翼科技股份有限公司 | Outdoor low temperature lithium battery group and its operation method |
| CN113690965A (en) * | 2021-07-09 | 2021-11-23 | 东莞新能安科技有限公司 | Protection circuit and circuit board, battery management system and battery package |
| CN114824536A (en) * | 2022-06-29 | 2022-07-29 | 荣耀终端有限公司 | Battery temperature sampling method and wearable device |
-
2014
- 2014-10-21 CN CN201420610436.8U patent/CN204205570U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359596A (en) * | 2017-07-26 | 2017-11-17 | 惠州市德赛电池有限公司 | A kind of battery core protection circuit |
| CN108666714A (en) * | 2018-08-02 | 2018-10-16 | 北京联动天翼科技股份有限公司 | Outdoor low temperature lithium battery group and its operation method |
| CN113690965A (en) * | 2021-07-09 | 2021-11-23 | 东莞新能安科技有限公司 | Protection circuit and circuit board, battery management system and battery package |
| CN114824536A (en) * | 2022-06-29 | 2022-07-29 | 荣耀终端有限公司 | Battery temperature sampling method and wearable device |
| CN114824536B (en) * | 2022-06-29 | 2022-11-08 | 荣耀终端有限公司 | Battery temperature sampling method and wearable device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 3rd floor, area a, building 3, Huiye Science Park, sightseeing Road, Tangjia community, Fenghuang street, Guangming District, Shenzhen City, Guangdong Province Patentee after: Shenzhen youteli Energy Co.,Ltd. Address before: 3 / F, building 3a, Huiye Science Park, sightseeing Road, Guangming New District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN UTILITY POWER SOURCE Co.,Ltd. |
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| CP03 | Change of name, title or address |