CN204349435U - A kind of charged state does not allow the lithium battery protection board discharged - Google Patents
A kind of charged state does not allow the lithium battery protection board discharged Download PDFInfo
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- CN204349435U CN204349435U CN201420819712.1U CN201420819712U CN204349435U CN 204349435 U CN204349435 U CN 204349435U CN 201420819712 U CN201420819712 U CN 201420819712U CN 204349435 U CN204349435 U CN 204349435U
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- charged state
- lithium battery
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- battery protection
- discharge
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Abstract
A kind of charged state does not allow the lithium battery protection board discharged, forbid that discharge module forms by common li-ion cell protection plate module and charged state, described common lithium battery protection module adopts Li battery protection IC, comprise and overcharging, cross and put, overcurrent, short-circuit protection function, described charged state forbids that discharge module comprises detection resistance, zero-crossing comparator, MOS switch, electric discharge MOS, described charged state forbids the port DO of discharge module, B-, CS, C+/P+ respectively with the port DO of described common li-ion cell protection plate module, B-, CS, the corresponding connection of C+/P+, described charged state forbids that the pressure drop detecting resistance is done Zero-cross comparator by discharge module, high level conducting MOS switch is exported by zero-crossing comparator, and then drag down electric discharge MOS driving voltage to forbid that lithium battery discharges.Compared with the small-sized PACK baffle of existing lithium battery, charged state does not allow the lithium battery protection board discharged can improve the useful life of whole PACK baffle.
Description
Technical field
The utility model relates to the lithium battery protection board that a kind of charged state does not allow to discharge, and belongs to lithium battery protection board technical field.
Background technology
The small-sized PACK baffle of the lithium battery occurred in the market is charged state and allows electric discharge, and this state of discharging of charging affected comparatively greatly the useful life of lithium battery, and then affected the useful life of the small-sized PACK baffle of whole lithium battery.
Utility model content
For solving the problem, the utility model discloses the lithium battery protection board that a kind of charged state does not allow to discharge, forbidding that discharge module forms by common li-ion cell protection plate module and charged state.Compared with the small-sized PACK baffle of existing lithium battery, charged state does not allow the lithium battery protection board discharged can improve the useful life of whole PACK baffle.
Technical solutions of the utility model are achieved in that
A kind of charged state does not allow the lithium battery protection board discharged, forbid that discharge module forms by common li-ion cell protection plate module and charged state, described common lithium battery protection module adopts Li battery protection IC, comprise and overcharging, cross and put, overcurrent, short-circuit protection function, described charged state forbids that discharge module comprises detection resistance, zero-crossing comparator, MOS switch, electric discharge MOS, described charged state forbids the port DO of discharge module, B-, CS, C+/P+ respectively with the port DO of described common li-ion cell protection plate module, B-, CS, the corresponding connection of C+/P+, described charged state forbids that the pressure drop detecting resistance is done Zero-cross comparator by discharge module, high level conducting MOS switch is exported by zero-crossing comparator, and then drag down electric discharge MOS driving voltage to forbid that lithium battery discharges.
Accompanying drawing explanation
Fig. 1 is the common lithium battery protection board modular circuit structural representation of the utility model embodiment.
Fig. 2 is that the charged state of the utility model embodiment forbids discharge module electrical block diagram.
Embodiment
The utility model proposes the lithium battery protection board that a kind of charged state does not allow to discharge, be described in detail as follows in conjunction with the accompanying drawings and embodiments.
The utility model embodiment comprises common li-ion cell protection plate module and charged state forbids discharge module.
As shown in Figure 1, it is controlled by Li battery protection IC U1 common lithium battery protection board modular circuit structural representation, and preferably, the model of this Li battery protection IC U1 is S-8204B.Built-in high precision test circuit and delay circuit in U1.Wherein, VDD and VSS is power supply interface; VC1, VC2, VC3 pin for detecting the voltage in this crosstalk pond, to judge the state residing for battery; CCT is overcharge testing lag interface, and CDT is overdischarge testing lag interface; VINI is discharging current detection port; COP is charging driving port, and DOP drives port for discharging.Other elements in this circuit diagram are common resistance, electric capacity and MOS switch.
Detect when VC1 or VC2 or VC3 pin the voltage that voltage allows more than U1 and more than CCT delay time, then show that battery is in the state of overcharging, U1 drives charging MOS Q2 by COP, makes charge cutoff thus protection battery does not overcharge; In like manner, the voltage that voltage allows more than U1 detected and more than CDT delay time, then show that battery was in the state of putting when VC1 or VC2 or VC3 pin, U1 drives electric discharge MOS Q1 by DOP, electric discharge is ended thus protection battery is only put.VINI pin, for detecting the pressure drop on resistance RSEN, to judge the state of discharging current, when circuit is in electric discharge overcurrent or load short circuits, makes electric discharge export cut-off, thus plays the effect of overcurrent protection and short-circuit protection.
Above-mentioned common lithium battery protection board modular circuit, when battery is in charged state, allow battery to discharge, and battery fills while battery impact of being rivals in a contest is larger.So the present embodiment increases a charged state again and forbids discharge module outside above-mentioned common li-ion cell protection plate module.
Charged state forbids discharge module electrical block diagram as shown in Figure 2.Charged state forbid discharge module port DO, B-, CS, C+/P+ respectively with the corresponding connection of port DO, B-, CS, C+/P+ of common li-ion cell protection plate module.In fig. 2, U2 is zero-crossing comparator, and arranging voltage is 0.Under battery charging state; resistance RSEN (this resistance RSEN and aforementioned common lithium battery protection board modular circuit share) produces pressure drop; this pressure drop is greater than 0; again Zero-cross comparator is carried out in this pressure drop and U2, U2 exports high potential driven MOS switch N2 afterwards, and when N2 conducting, DO port is forced to be pulled to electronegative potential; make electric discharge MOS Q1 cut-off; power brick exports P-cut-off, and power brick no-output, reaches the effect that charging is not discharged.
In above-mentioned common li-ion cell protection plate module, add above-mentioned charged state forbid discharge module, just can ensure to forbid battery discharge in charged state, thus effective guarantee useful life of battery.
Claims (2)
1. a charged state does not allow the lithium battery protection board that discharges, forbid that discharge module forms by common li-ion cell protection plate module and charged state, described common lithium battery protection module adopts Li battery protection IC, comprise and overcharging, cross and put, overcurrent, short-circuit protection function, it is characterized in that: described charged state forbids that discharge module comprises detection resistance, zero-crossing comparator, MOS switch, electric discharge MOS, described charged state forbids the port DO of discharge module, B-, CS, C+/P+ respectively with the port DO of described common li-ion cell protection plate module, B-, CS, the corresponding connection of C+/P+, described charged state forbids that the pressure drop detecting resistance is done Zero-cross comparator by discharge module, high level conducting MOS switch is exported by zero-crossing comparator, and then drag down electric discharge MOS driving voltage to forbid that lithium battery discharges.
2. a kind of charged state as claimed in claim 1 does not allow the lithium battery protection board of electric discharge, it is characterized in that described common lithium battery protection module adopts the model of Li battery protection IC to be S-8204B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819712.1U CN204349435U (en) | 2014-12-23 | 2014-12-23 | A kind of charged state does not allow the lithium battery protection board discharged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819712.1U CN204349435U (en) | 2014-12-23 | 2014-12-23 | A kind of charged state does not allow the lithium battery protection board discharged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349435U true CN204349435U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420819712.1U Active CN204349435U (en) | 2014-12-23 | 2014-12-23 | A kind of charged state does not allow the lithium battery protection board discharged |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185884A1 (en) * | 2016-04-28 | 2017-11-02 | 深圳源创智能照明有限公司 | Self-activating circuit and battery protection system including same |
| CN108155703A (en) * | 2018-03-11 | 2018-06-12 | 深圳大力神科技有限公司 | A kind of improvement lithium cell protecting device and its charging MOS protection circuits |
| CN110112455A (en) * | 2019-05-29 | 2019-08-09 | 东莞市机圣自动化设备科技有限公司 | Assembling mechanism and lithium battery protection board kludge |
-
2014
- 2014-12-23 CN CN201420819712.1U patent/CN204349435U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185884A1 (en) * | 2016-04-28 | 2017-11-02 | 深圳源创智能照明有限公司 | Self-activating circuit and battery protection system including same |
| CN108155703A (en) * | 2018-03-11 | 2018-06-12 | 深圳大力神科技有限公司 | A kind of improvement lithium cell protecting device and its charging MOS protection circuits |
| CN110112455A (en) * | 2019-05-29 | 2019-08-09 | 东莞市机圣自动化设备科技有限公司 | Assembling mechanism and lithium battery protection board kludge |
| CN110112455B (en) * | 2019-05-29 | 2024-03-26 | 东莞市机圣自动化设备科技有限公司 | Assembling mechanism and lithium battery protection board assembling machine |
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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: 200444 Shanghai Road, Baoshan District, No. 511 Patentee after: Shanghai Li Sheng graphene Technology Co., Ltd. Address before: 200444 Baoshan District, Shanghai Chen Road, No. 1000 Patentee before: SHANGHAI DONGCHANG AUTOMOBILE PARTS CO., LTD. |