CN204886217U - Activation circuit of mobile device battery - Google Patents
Activation circuit of mobile device battery Download PDFInfo
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- CN204886217U CN204886217U CN201520316203.1U CN201520316203U CN204886217U CN 204886217 U CN204886217 U CN 204886217U CN 201520316203 U CN201520316203 U CN 201520316203U CN 204886217 U CN204886217 U CN 204886217U
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Abstract
The utility model discloses an activation circuit of mobile device battery, include: a MOS pipe is arranged in the battery protection shield, and the drain electrode of MOS pipe connects the 3rd pin of battery protection shield, the source connection reference voltage of MOS pipe, and when the battery was in the guard mode, a MOS piping was logical, first resistance, the one end and the drain electrode of MOS pipe of first resistance are connected, and the 3rd pin of battery protection shield is connected to the other end, and first resistance is the internal resistance of battery protection shield, the load is connected between the positive pole and negative pole of battery protection shield, and the one end of load still is connected with the other end of first resistance, wherein, when the battery was in the guard mode, a MOS piping led to, inserts the charger, made a charger output high level pulse, made the voltage of the first resistance other end be less than a reference voltage, and the battery withdraws from the guard mode. In this way, the utility model discloses can under any circumstance need not to break off battery and load, only can be with activation battery protection shield through inserting that the charger charges for the battery.
Description
Technical field
The utility model relates to field of mobile equipment, especially relates to a kind of active circuit of mobile device battery.
Background technology
Current phone battery has two kinds: a kind of external battery, and user can dismantle; A kind of internal battery, user cannot dismantle.Current smart mobile phone adopts increasing gradually of internal battery.Can trigger battery protecting plate work when battery from overcurrent or outside mobile phone load short circuits, close battery discharge path, cause mobile phone power-off to start shooting, this phenomenon cannot be recovered voluntarily.
So must activate baffle and just can reuse mobile phone, current primary activation method comprises: disconnect battery of mobile phone and load, reinstall after namely pulling out battery, the method internal battery can not use again; Insert charger to charge the battery to activate; without the need to disconnecting battery and load; the method can only be suitable for partial picture; namely only have when cell voltage just can activate baffle lower than charging chip (Charger) output voltage, when cell voltage then cannot activate higher than Charger output voltage.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of active circuit of mobile device battery, can under any circumstance, and without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the active circuit providing a kind of mobile device battery, circuit comprises: the first metal-oxide-semiconductor, first metal-oxide-semiconductor is arranged in battery protecting plate, and the drain electrode of the first metal-oxide-semiconductor connects the 3rd pin of battery protecting plate, the source electrode of the first metal-oxide-semiconductor connects the first reference voltage, when battery is in guard mode, and the first metal-oxide-semiconductor conducting; First resistance, one end of the first resistance is connected with the drain electrode of the first metal-oxide-semiconductor, and the other end connects the 3rd pin of battery protecting plate 13, and the first resistance is the internal resistance of battery protecting plate; Load, is connected between the positive pole of battery protecting plate and negative pole, and one end of load is also connected with the other end of the first resistance; Wherein, when battery is in guard mode, the first metal-oxide-semiconductor conducting, insert charger, make charger export a high level pulse, make the voltage of the first resistance other end lower than the first reference voltage, battery exits guard mode.
Wherein, circuit also comprises the second resistance, and the second resistance is connected between load and the first resistance.
Wherein, circuit also comprises the second metal-oxide-semiconductor, and the source electrode of the second metal-oxide-semiconductor connects the first end of battery, and the grid of the second metal-oxide-semiconductor connects the 1st pin of battery protecting plate.
Wherein, when battery from overcurrent or short circuit, the second metal-oxide-semiconductor turns off.
Circuit also comprises the 3rd metal-oxide-semiconductor, and the source electrode of the 3rd metal-oxide-semiconductor connects the first end of battery, and the grid of the 3rd metal-oxide-semiconductor connects the 2nd pin of battery protecting plate.
Wherein, when overcharge appears in battery, the 3rd metal-oxide-semiconductor turns off.
Wherein, the duration of high level pulse is greater than the time threshold making battery exit guard mode.
Wherein, active circuit also comprises detection module, for detecting the voltage of battery and judging whether battery is in guard mode according to the voltage of battery and the second reference voltage.
Wherein, if detection module detects that the voltage of battery is less than the second reference voltage, then charge by the current versus cell preset, again detect the voltage of battery after Preset Time and compare with the second reference voltage; if the voltage of battery is still less than the second reference voltage, then battery is in guard mode.
Wherein, active circuit also comprises control module, and for when battery is in guard mode, the charging chip controlling charger exports high level pulse, and battery exits guard mode, and wherein high level pulse is greater than the voltage of battery.
The beneficial effects of the utility model are: the situation being different from prior art, the active circuit of mobile device battery of the present utility model, first metal-oxide-semiconductor is arranged in battery protecting plate, and the drain electrode of the first metal-oxide-semiconductor connects the 3rd pin of battery protecting plate, the source electrode of the first metal-oxide-semiconductor connects the first reference voltage, when battery is in guard mode, first metal-oxide-semiconductor conducting, one end of first resistance is connected with the drain electrode of the first metal-oxide-semiconductor, the other end connects the 3rd pin of battery protecting plate, first resistance is the internal resistance of battery protecting plate, load is connected between the positive pole of battery protecting plate and negative pole, when battery is in guard mode, first metal-oxide-semiconductor conducting, insert charger, charger is made to export a high level pulse, make the voltage of the first resistance other end lower than the first reference voltage, battery exits guard mode, can be under any circumstance, without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the active circuit of the mobile device battery of the utility model first embodiment;
Fig. 2 is the structural representation of the active circuit of the mobile device battery of the utility model second embodiment;
Fig. 3 is the structural representation of the battery protecting plate in Fig. 2.
Embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of the active circuit of the mobile device battery of the utility model first embodiment.Charger is connected with battery protecting plate; battery protecting plate comprises the first metal-oxide-semiconductor and the first resistance, and the drain electrode of the first metal-oxide-semiconductor connects the 3rd pin of battery protecting plate by the first resistance, the source electrode of the first metal-oxide-semiconductor connects the first reference voltage; when battery is in guard mode, the first metal-oxide-semiconductor conducting.As shown in Figure 1, the active circuit 10 of mobile device battery comprises detection module 11 and control module 12.Detection module 11 is for judging whether battery is in guard mode.Control module 12 is connected with detection module 11, if battery is in guard mode, then control module 12 controls the charging chip output high level pulse of charger, and high level pulse is greater than the voltage of battery, and battery exits guard mode.And the duration of high level pulse is greater than the time threshold activating guard mode, makes it possible under any circumstance, without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.Can under any circumstance, without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.
In embodiment more specifically, detection module 11 comprises the first above-mentioned metal-oxide-semiconductor and the first resistance, and detection module 11 detects the voltage of battery, and judges whether battery is in guard mode according to the voltage of battery and the first reference voltage.If the voltage of battery is greater than the second reference voltage, then show that battery charges normal.If the voltage of battery is less than the second reference voltage, then charge by the current versus cell preset, after Preset Time, detection module 11 detects the voltage of battery again, and compares with the second reference voltage.If the voltage of battery is greater than the second reference voltage, then show that battery charges normal.If the voltage of battery is less than the second reference voltage, then show that battery is in guard mode.
Fig. 2 is the structural representation of the active circuit of the mobile device battery of the utility model second embodiment.Fig. 3 is the structural representation of the battery protecting plate in Fig. 2.As shown in Figures 2 and 3, the active circuit 10 of mobile device battery comprises the first metal-oxide-semiconductor T1, the first resistance R1, the second resistance R2 and load R3.Wherein the first metal-oxide-semiconductor T1 and the first resistance R1 is included in battery protecting plate 13, and the second resistance R2 and load R3 is included in control module 12.The drain electrode of the first metal-oxide-semiconductor T1 connects the 3rd pin 3 of battery protecting plate 13; the source electrode of the first metal-oxide-semiconductor T1 connects the first reference voltage Vss, when battery D is in overcurrent electric discharge or load short circuits state, triggers battery protecting plate 13 and works; first metal-oxide-semiconductor T1 conducting, battery D is in guard mode.One end of first resistance R1 is connected with the drain electrode of the first metal-oxide-semiconductor T1, and the other end connects the 3rd pin of battery protecting plate 13, and the first resistance R1 is the internal resistance of battery protecting plate 13.Control module 12 comprises the second above-mentioned resistance R2 and load R3, and the second resistance R2 is connected between load R3 and the first resistance R1.Between the positive pole that load R3 is connected to battery protecting plate 13 and negative pole, one end of load R3 is also connected with the other end of the first resistance R1.By the time insert charger, namely in the indirect charging voltage of P+ and the P-of battery protecting plate 13, make charger export a high level pulse, be equivalent to disconnecting consumers R3, make the voltage V-of the first resistance R1 other end lower than the first reference voltage Vss, battery D exits guard mode.Wherein the duration of high level pulse is greater than the time threshold activating guard mode.
When battery D overcurrent protection or short-circuit protection, the first metal-oxide-semiconductor T1 conducting, so when load R3 then time; V-=VDD*R2/ (R3+R1+R2), because R3 is very little, so V-value is larger; so be high level always, locking short-circuit protection or overcurrent protection.After short-circuit protection, because V-end is high level, even if battery Full Charge Capacity, external detection is also 0V to cell voltage, and therefore mobile phone cannot be started shooting.
If load R3 disconnects, R3 becomes infinite resistance, so according to above formula, V-can become infinitely small, and when V-level is lower than 0.1V, short circuit or overcurrent protection are removed.During charger access; if the voltage ratio battery core voltage that charger outputs to battery is high; now; charging path conducting; be equivalent to the current potential by force P-end being pulled to charger negative pole; this voltage ratio VSS is also low, so V-also can change low level (<0.1V) into, now short circuit or overcurrent protection are removed.So can under any circumstance, without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.Wherein battery core voltage is the voltage that battery protecting plate 13 exports battery to.If charger outputs to the voltage of battery lower than battery core voltage; be equivalent to an external power source connect with battery of mobile phone is anti-phase; because external power source is lower than battery core voltage; so charging path still cannot conducting; (battery protecting plate 13 ground end is battery cathode to battery protecting plate 13 not altogether with charger; i.e. Vss), P-end still maintains high level, and short circuit or overcurrent protection cannot be removed.
The active circuit 10 of mobile device battery also comprises the second metal-oxide-semiconductor T2 and the 3rd metal-oxide-semiconductor T3.The source electrode of the second metal-oxide-semiconductor T2 connects the first end of battery D, and the grid of the second metal-oxide-semiconductor T2 connects the 1st pin 1 of battery protecting plate.The source electrode of the 3rd metal-oxide-semiconductor T3 connects the first end of battery D, and the grid of the 3rd metal-oxide-semiconductor T3 connects the 2nd pin 2 of battery D baffle.When overcurrent or short circuit appear in battery D, the second metal-oxide-semiconductor T2 turns off.When overcharge appears in battery D, the 3rd metal-oxide-semiconductor T3 turns off.
In sum, the active circuit of mobile device battery of the present utility model, first metal-oxide-semiconductor is arranged in battery protecting plate, and the drain electrode of the first metal-oxide-semiconductor connects the 3rd pin of battery protecting plate, the source electrode of the first metal-oxide-semiconductor connects the first reference voltage, when battery is in guard mode, first metal-oxide-semiconductor conducting, one end of first resistance is connected with the drain electrode of the first metal-oxide-semiconductor, the other end connects the 3rd pin of battery protecting plate, first resistance is the internal resistance of battery protecting plate, load is connected between the positive pole of battery protecting plate and negative pole, when battery is in guard mode, first metal-oxide-semiconductor conducting, insert charger, charger is made to export a high level pulse, make the voltage of the first resistance other end lower than the first reference voltage, battery exits guard mode, can be under any circumstance, without the need to disconnecting battery and load, only being charged the battery by insertion charger namely can activated batteries baffle.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an active circuit for mobile device battery, is characterized in that, described circuit comprises:
First metal-oxide-semiconductor, described first metal-oxide-semiconductor is arranged in battery protecting plate, and the drain electrode of described first metal-oxide-semiconductor connects the 3rd pin of described battery protecting plate, and the source electrode of described first metal-oxide-semiconductor connects the first reference voltage, when described battery is in guard mode, described first metal-oxide-semiconductor conducting;
First resistance, one end of described first resistance is connected with the drain electrode of described first metal-oxide-semiconductor, and the other end connects the 3rd pin of described battery protecting plate, and described first resistance is the internal resistance of described battery protecting plate;
Load, between the positive pole being connected to described battery protecting plate and negative pole, one end of described load is also connected with the other end of described first resistance;
Wherein, when described battery is in guard mode, described first metal-oxide-semiconductor conducting, insert charger, make described charger export a high level pulse, make the voltage of the described first resistance other end lower than described first reference voltage, described battery exits guard mode.
2. active circuit according to claim 1, is characterized in that, described circuit also comprises the second resistance, and described second resistance is connected between described load and described first resistance.
3. active circuit according to claim 1, is characterized in that, described circuit also comprises the second metal-oxide-semiconductor, and the source electrode of described second metal-oxide-semiconductor connects the first end of described battery, and the grid of described second metal-oxide-semiconductor connects the 1st pin of described battery protecting plate.
4. active circuit according to claim 3, is characterized in that, when described battery from overcurrent or short circuit, described second metal-oxide-semiconductor turns off.
5. active circuit according to claim 1, is characterized in that, described circuit also comprises the 3rd metal-oxide-semiconductor, and the source electrode of described 3rd metal-oxide-semiconductor connects the first end of described battery, and the grid of described 3rd metal-oxide-semiconductor connects the 2nd pin of described battery protecting plate.
6. active circuit according to claim 5, is characterized in that, when overcharge appears in described battery, described 3rd metal-oxide-semiconductor turns off.
7. active circuit according to claim 1, is characterized in that, the duration of described high level pulse is greater than the time threshold making described battery exit described guard mode.
8. active circuit according to claim 1; it is characterized in that; described active circuit also comprises detection module; described detection module comprises described first metal-oxide-semiconductor and described first resistance, for detecting the voltage of described battery and judging whether described battery is in guard mode according to the voltage of described battery and the second reference voltage.
9. active circuit according to claim 8; it is characterized in that; if described detection module detects that the voltage of described battery is less than described second reference voltage; then charge by the current versus cell preset; again detect the voltage of described battery after Preset Time and compare with described second reference voltage; if the voltage of described battery is still less than described second reference voltage, then described battery is in guard mode.
10. active circuit according to claim 2; it is characterized in that; described active circuit also comprises control module; described control module comprises described load and described second resistance; for when described battery is in guard mode; the charging chip controlling described charger exports described high level pulse, and described battery exits described guard mode, and wherein said high level pulse is greater than the voltage of described battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316203.1U CN204886217U (en) | 2015-05-15 | 2015-05-15 | Activation circuit of mobile device battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316203.1U CN204886217U (en) | 2015-05-15 | 2015-05-15 | Activation circuit of mobile device battery |
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| Publication Number | Publication Date |
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| CN204886217U true CN204886217U (en) | 2015-12-16 |
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| CN201520316203.1U Expired - Fee Related CN204886217U (en) | 2015-05-15 | 2015-05-15 | Activation circuit of mobile device battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901363A (en) * | 2015-05-15 | 2015-09-09 | 深圳天珑无线科技有限公司 | Activation circuit and method for battery of mobile equipment |
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2015
- 2015-05-15 CN CN201520316203.1U patent/CN204886217U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901363A (en) * | 2015-05-15 | 2015-09-09 | 深圳天珑无线科技有限公司 | Activation circuit and method for battery of mobile equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20180515 |
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| CF01 | Termination of patent right due to non-payment of annual fee |