CN204205573U - Charge protector of battery - Google Patents
Charge protector of battery Download PDFInfo
- Publication number
- CN204205573U CN204205573U CN201420725910.1U CN201420725910U CN204205573U CN 204205573 U CN204205573 U CN 204205573U CN 201420725910 U CN201420725910 U CN 201420725910U CN 204205573 U CN204205573 U CN 204205573U
- Authority
- CN
- China
- Prior art keywords
- battery
- charge
- power supply
- controlled switch
- channel mos
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Secondary Cells (AREA)
- Protection Of Static Devices (AREA)
Abstract
The utility model provides a kind of charge protector of battery, comprise: at least one anti-battery back discharge module, for preventing battery to charge power supply back discharge, specifically comprise: detect charging power modules, for judging described charge power supply and described battery whether exact connect ion, export the first level during exact connect ion, during non-exact connect ion, export second electrical level; Controlled switch, the input of controlled switch is connected with the positive pole of charge power supply, the output of controlled switch is connected with the positive pole of battery, the controlled end of controlled switch is connected with detection charging power modules, when described controlled switch receives described first electric conducts, disconnect when receiving described second electrical level.Ensure that described battery only when with described charge power supply exact connect ion by arranging anti-battery back discharge module, just the charge circuit of turn-on battery, ensure that the fail safe that battery charges and to charge power supply back discharge, can not extend the useful life of battery.
Description
Technical field
The utility model relates to battery protection technical field, relates to a kind of charge protector of battery particularly.
Background technology
In recent years, the development that Multimedia Mobile handheld terminal is at full speed, as: digital camera, mobile phone, panel computer, portable audio-visual devices or bluetooth equipment etc., all need in Multimedia Mobile handheld terminal to adopt battery to power, and in these equipment, the general lithium battery that adopts is as main power source.Lithium battery has that volume is little, energy density is high, high, the high cell voltage of memory-less effect, cycle life and the advantage such as self-discharge rate is low.
Due to the physical characteristic of lithium battery self, in use, lithium battery is very strict to the requirement of charging current, charging voltage, once exceed the charge lifetimes that will shorten lithium battery.Common rechargeable batteries, in the process of charging, needs by the charging current of battery, charging voltage restriction in allowed limits equally.Simultaneously, the circuit design of the charge power supply of battery of commercial type is relatively simple, therefore when charge power supply occurs abnormal, to cause damage to the battery charged and dangerous, or when charge power supply is not connected with battery, battery carries out back discharge situation to charge power supply can occur, and this is all unfavorable for the safety of battery charging process, and can shorten the useful life of battery.
Utility model content
For this reason, technical problem to be solved in the utility model be charge protector of battery of the prior art can not effectively ensure battery charging process safe, extend useful life of battery.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of charge protector of battery, comprising: at least one anti-battery back discharge module, for preventing battery to charge power supply back discharge, described anti-battery back discharge module comprises:
Detect charging power modules, for judging described charge power supply and described battery whether exact connect ion, exporting the first level when described charge power supply exact connect ion, exporting second electrical level when the non-exact connect ion of described charge power supply;
Controlled switch, the input of described controlled switch is connected with the positive pole of described charge power supply, the output of described controlled switch is connected with the positive pole of described battery, the controlled end of described controlled switch is connected with described detection charging power modules, when described controlled switch receives described first electric conducts, disconnect when receiving described second electrical level.
Described charge protector of battery, described detection charging power modules comprises: Hall element, a P channel MOS tube and the first resistance, wherein,
The input of described Hall element is connected with one end of the positive pole of described charge power supply, described first resistance, the source electrode of a described P channel MOS tube respectively, the output of described Hall element is connected with the other end of described first resistance, the grid of a described P channel MOS tube respectively, for detecting described charge power supply and described battery whether exact connect ion;
The drain electrode of a described P channel MOS tube is as the output of described detection charging power modules.
Described charge protector of battery, described controlled switch comprises: the 2nd P channel MOS tube, the 3rd N-channel MOS pipe, the second resistance, the 3rd resistance and the 4th resistance, wherein,
One end of described 4th resistance is as the controlled end of described controlled switch; The other end is connected with the grid of described 3rd N-channel MOS pipe;
The source electrode of described 3rd N-channel MOS pipe is connected with the negative pole of described charge power supply; The drain electrode of described 3rd N-channel MOS pipe is connected with one end of described 3rd resistance;
The other end of described 3rd resistance is connected with the grid of described 2nd P channel MOS tube, one end of described second resistance respectively;
The other end of described second resistance is connected with the source electrode of described 2nd P channel MOS tube;
The drain electrode of described 2nd P channel MOS tube is as the input of described controlled switch;
The source electrode of described 2nd P channel MOS tube is as the output of described controlled switch.
Described charge protector of battery, described anti-battery back discharge module is multiple, and the described controlled switch of described anti-battery back discharge module is connected in series.
Described charge protector of battery; also comprise: charge power supply over-voltage protection module; for when the voltage of charge power supply is greater than predetermined threshold value; cut off the charge circuit of battery; described charge power supply over-voltage protection module comprises the 4th P channel MOS tube, the first diode and the 5th resistance; wherein
The source electrode of described 4th P channel MOS tube is connected with the positive pole of described charge power supply, the negative electrode of described first diode respectively;
The drain electrode of described 4th P channel MOS tube is connected with the positive pole of described battery;
The grid of described 4th P channel MOS tube is connected with the anode of described first diode, one end of described 5th resistance respectively;
The other end of described 5th resistance is connected with the negative pole of described charge power supply.
Described charge protector of battery, also comprises at least one additives for overcharge protection module, and for limiting voltage during battery charging, described additives for overcharge protection module comprises:
Voltage detection unit, for judging whether the voltage of described battery is greater than the overcharge detection voltage threshold of described battery, exports overcharge signal when the voltage of described battery is greater than described overcharge detection voltage threshold;
First controlled switch, the controlled end of described first controlled switch is connected with described voltage detection unit, disconnects when the controlled end of described first controlled switch receives described overcharge signal the charge circuit then cutting off battery.
Described charge protector of battery; described additives for overcharge protection module is multiple; described first controlled switch of described additives for overcharge protection module is connected in series; when voltage detection unit exports described overcharge signal described in any one in described multiple additives for overcharge protection module, then control the charge circuit that corresponding described first controlled switch cuts off battery.
Described charge protector of battery; the additives for overcharge protection that when described voltage detection unit is also for judging that described first controlled switch disconnects, whether the voltage of battery is less than described battery removes voltage threshold, when the voltage of described battery be less than to control when described additives for overcharge protection removes voltage threshold described first controlled switch again conducting with the charge circuit of turn-on battery.
Described charge protector of battery; also comprise equalizing charge protection module; for at described battery be two joints series connection battery time; judge whether the pressure reduction of described two batteries exceedes preset value; when being greater than described preset value; then balanced discharge being carried out to two batteries, when being less than or equal to described preset value, stopping carrying out balanced discharge to two batteries.
According to charge protector of battery of the present utility model by arranging anti-battery back discharge module; ensure that battery only when with charge power supply exact connect ion; the just charge circuit of turn-on battery; ensure that the fail safe that described battery charges and to charge power supply back discharge, the useful life of battery can not be extended.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the schematic diagram of the charge protector of battery according to the utility model first embodiment;
Fig. 2 is the circuit structure diagram according to the anti-battery back discharge module in the charge protector of battery of the utility model first embodiment;
Fig. 3 is the circuit structure diagram comprising two anti-battery back discharge modules in the charge protector of battery according to the utility model first embodiment;
Fig. 4 is the schematic diagram of the charge protector of battery according to the utility model second embodiment;
Fig. 5 is the circuit structure diagram of charge power supply over-voltage protection module in the charge protector of battery according to the utility model second embodiment;
Fig. 6 is the schematic diagram of the charge protector of battery according to the utility model the 3rd embodiment;
Fig. 7 is the circuit structure diagram of the additives for overcharge protection module of charge protector of battery according to the utility model the 3rd embodiment;
Fig. 8 is according to the circuit structure diagram of the equalizing charge protection module of the charge protector of battery of the utility model the 3rd embodiment.
Reference numeral: 1-anti-battery back discharge module, 2-charge power supply over-voltage protection module, 3-additives for overcharge protection module, 11-detects charging power modules, 12-controlled switch, 31-voltage detection unit, 32-first controlled switch.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of charge protector of battery that the present embodiment provides, comprising: at least one anti-battery back discharge module 1, and for preventing battery to charge power supply back discharge, described anti-battery back discharge module 1 comprises:
Detect charging power modules 11, for judging described charge power supply and described battery whether exact connect ion, exporting the first level when described charge power supply exact connect ion, exporting second electrical level when the non-exact connect ion of described charge power supply;
Controlled switch 12, described controlled switch 12 (schematically represents with metal-oxide-semiconductor in figure, adopt other controlled switchs to be also fine) input be connected with the positive pole of described charge power supply, the output of described controlled switch 12 is connected with the positive pole of described battery, the controlled end of described controlled switch 12 is connected with described detection charging power modules 11, when described controlled switch 12 receives described first electric conducts, disconnect when receiving described second electrical level.
The model of charge power supply on the market has a variety of, the charge power supply of the corresponding different model of different batteries, described charge power supply and described battery exact connect ion refer to: if when charge power supply is high capacity cell, and described high capacity cell mates with the battery that need charge and is connected rear contact well; If when charge power supply is charger, described charger and battery coupling and Charger (portable round) exact connect ion, charger contacts well with battery exact connect ion.Those skilled in the art should understand that, described charge power supply and described battery exact connect ion refer to that charge power supply can correctly charge the battery required condition of contact widely, if the voltage of charge power supply is in certain preset range, think that this charge power supply can charge the battery.
Described battery is ensure that only when with described charge power supply exact connect ion by arranging anti-battery back discharge module 1, the just charge circuit of turn-on battery, ensure that the fail safe that described battery charges and can not to described charge power supply back discharge, extend the useful life of battery, and save the energy.
Preferably, as shown in Figure 2, described charge protector of battery, described detection charging power modules 11 can comprise: Hall element U11, one P channel MOS tube Q24 and the first resistance R74, wherein, the input of described Hall element U11 respectively with the positive pole (representing with V_BAT_IN in Fig. 2) of described charge power supply, one end of described first resistance R74, the source electrode of a described P channel MOS tube Q24 connects, the output of described Hall element U11 respectively with the other end of described first resistance R74, the grid of a described P channel MOS tube Q24 connects, for detecting described charge power supply and described battery whether exact connect ion, the drain electrode of a described P channel MOS tube Q24 is as the output of described detection charging power modules 11.Electric capacity C75 in Fig. 2 is connected between the positive pole of charge power supply and negative pole, plays the effect of filtering.Hall element U11 such as can adopt chips W SH131 to realize, and detects described charge power supply and described battery whether exact connect ion by Hall element U11; Be conducive to the integration of compact of circuit.
Preferably, as shown in Figure 2, described controlled switch 12 can comprise: the 2nd P channel MOS tube Q2, the 3rd N-channel MOS pipe Q5, the second resistance R1, the 3rd resistance R3 and the 4th resistance R8, and wherein, one end of described 4th resistance R8 is as the controlled end of described controlled switch 12; The other end is connected with the grid of described 3rd N-channel MOS pipe Q5; The source electrode of described 3rd N-channel MOS pipe Q5 is connected with the negative pole of described charge power supply; The drain electrode of described 3rd N-channel MOS pipe Q5 is connected with one end of described 3rd resistance R3; The other end of described 3rd resistance R3 is connected with the grid of described 2nd P channel MOS tube Q2, one end of described second resistance R1 respectively; The other end of described second resistance R1 is connected with the source electrode of described 2nd P channel MOS tube Q2; The drain electrode of described 2nd P channel MOS tube Q2 is as the input of described controlled switch; The source electrode of described 2nd P channel MOS tube Q2 is as the output of described controlled switch.Resistance R73 in Fig. 2 is connected the negative pole of charge power supply after connecting with the 4th resistance R8, play the effect of protection the 3rd N-channel MOS pipe Q5.
In the controlled switch 12 that the present embodiment provides, when the controlled end of controlled switch 12 receives the first level, namely when charge power supply and described battery exact connect ion, the 2nd P channel MOS tube Q2 and the equal conducting of the 3rd N-channel MOS pipe Q5, battery charges normal; When the controlled end of controlled switch 12 receives second electrical level, namely when charge power supply and the non-exact connect ion of described battery, the 3rd N-channel MOS pipe Q5 turns off, and meanwhile, the 2nd P channel MOS tube Q2 turns off, then cut off the loop of battery to charge power supply back discharge.Simultaneously, adopt diode as the circuit of anti-reverse charging in the major loop of battery charging adopting the 2nd P channel MOS tube Q2 relative to prior art, reduce the pressure drop on major loop, because pressure drop during metal-oxide-semiconductor conducting is much smaller than pressure drop when diode current flow, thus be conducive to better charging to battery.
Preferably, described anti-battery back discharge module 1 can be two or more, described anti-battery back discharge module 1 described in controlled switch 12 connect.When detecting charging power modules 11 described in any one in described multiple anti-battery back discharge module 1 and exporting second electrical level, then control the charge circuit that corresponding described controlled switch 12 cuts off battery.By arranging at least two anti-battery back discharge modules 1, further ensuring the reliability of circuit, when one of them anti-battery back discharge module 1 lost efficacy, still can ensure that circuit prevents battery to charge power supply back discharge accurately.
In actual use, because whether Hall element detection battery is higher with the reliability of charge power supply exact connect ion, so the detection charging power modules 11 in multiple anti-battery back discharge module 1 can be general, multiple controlled switch 12 is only set.Fig. 3 shows the execution mode that employing one detects charging power modules 11 and two controlled switchs 12.When detecting charging power modules 11 and battery and charge power supply exact connect ion being detected, export the first level, then the 2nd P channel MOS tube Q2, the 3rd N-channel MOS pipe Q5, P channel MOS tube Q3, the equal conducting of N-channel MOS pipe Q6, battery charges normal; When detecting charging power modules 11 and detecting that battery and charge power supply are incorrect and be connected, export second electrical level, then the 2nd P channel MOS tube Q2, the 3rd N-channel MOS pipe Q5, P channel MOS tube Q3, N-channel MOS pipe Q6 all turn off, then cut off the charge circuit of battery, namely cut off the loop of battery to charge power supply back discharge.
Embodiment 2
Fig. 4 is the schematic diagram of the charge protector of battery of the present embodiment; be with the difference of the schematic diagram of the charge protector of battery in the embodiment 1 shown in Fig. 1; the schematic diagram of the charge protector of battery shown in Fig. 4; also comprise: charge power supply over-voltage protection module 2; for when the voltage of charge power supply is greater than predetermined threshold value, cut off the charge circuit of battery.As shown in Figure 5, described charge power supply over-voltage protection module 2 can comprise the 4th P channel MOS tube Q1, the first diode D1 and the 5th resistance R7, wherein, the source electrode of described 4th P channel MOS tube Q1 is connected with the positive pole (representing with V_BAT_IN in Fig. 5) of described charge power supply, the negative electrode of described first diode D1 respectively; The drain electrode of described 4th P channel MOS tube Q1 is connected with the positive pole of described battery; The grid of described 4th P channel MOS tube Q1 is connected with the anode of described first diode D1, one end of described 5th resistance R7 respectively; The other end of described 5th resistance R7 is connected with the negative pole of described charge power supply.Electric capacity C9 in parallel with the first diode D1 in Fig. 5 plays the effect of filtering.
Charge power supply over-voltage protection module 2 in the present embodiment, when the voltage of charge power supply is not more than predetermined threshold value, described 4th P channel MOS tube Q1 conducting, battery charges normal; When the voltage of charge power supply is greater than predetermined threshold value, described first diode D1 will be breakdown, then cause described 4th P channel MOS tube Q1 to turn off, then cut off the charge circuit of battery.By arranging charge power supply over-voltage protection module 2, when the electric voltage exception of charge power supply, cutting off the charge circuit of battery in time, having protected battery.
Embodiment 3
Fig. 6 is the schematic diagram of the charge protector of battery of the present embodiment, be with the difference of the schematic diagram of the charge protector of battery in the embodiment 1 shown in Fig. 1, the schematic diagram of the charge protector of battery shown in Fig. 6, also comprise at least one additives for overcharge protection module 3, for limiting voltage during battery charging, described additives for overcharge protection module 3 comprises: voltage detection unit 31, for judging whether the voltage of described battery is greater than the overcharge detection voltage threshold of described battery, overcharge signal is exported when the voltage of described battery is greater than described overcharge detection voltage threshold, first controlled switch 32, the controlled end of described first controlled switch 32 is connected with described voltage detection unit 31, disconnects when the controlled end of described first controlled switch 32 receives described overcharge signal the charge circuit then cutting off battery.Although the additives for overcharge protection module 3 that Fig. 6 illustrates is arranged between the negative pole of charge power supply and the negative pole of battery; those skilled in the art should be appreciated that and also be fine between the positive pole that described additives for overcharge protection module 3 is arranged at the Anode and battery of charge power supply, as long as the function that can realize the charge circuit cutting off battery is then passable.
By arranging additives for overcharge protection module 3, ensure that the voltage of battery is not more than the overcharge detection voltage threshold of battery, battery overcharges and will shorten the life-span of battery, so designs, and effectively extends the useful life of battery.
Preferably; described additives for overcharge protection module 3 can be two or more; described first controlled switch 32 of described additives for overcharge protection module 3 is connected in series; when voltage detection unit 31 exports described overcharge signal described in any one in described multiple additives for overcharge protection module 3, then control the charge circuit that corresponding described first controlled switch 32 cuts off battery.By arranging at least multiple additives for overcharge protection module 3, further ensuring the reliability of circuit, when one of them additives for overcharge protection module 3 lost efficacy, still can ensure that circuit limits the voltage of battery accurately.
Preferably; the additives for overcharge protection that when described voltage detection unit 31 in the present embodiment can also be used for judging that described first controlled switch 32 disconnects, whether the voltage of battery is less than described battery removes voltage threshold, when the voltage of described battery be less than to control when described additives for overcharge protection removes voltage threshold described first controlled switch 32 again conducting with the charge circuit of turn-on battery.This just can when the voltage drop of battery be low to moderate the additives for overcharge protection releasing voltage threshold being less than battery, and the charge circuit of timely turn-on battery, is convenient to the charging in time to battery.
As specific implementation, as shown in Figure 7, when described battery is the battery of two joint series connection, described voltage detection unit 31 can adopt chip R5460N208AA to realize, described first controlled switch 32 adopts N-channel MOS pipe Q8 to realize, and wherein, the overcharging of the grid of N-channel MOS pipe Q8 and chip R5460N208AA controls pin (Cout) and be connected, the source electrode of described N-channel MOS pipe Q8 is connected with the negative pole of charge power supply, and the drain electrode of described N-channel MOS pipe Q8 is connected with the negative pole of battery.In Fig. 7, V_BAT_V1 represents the voltage of a wherein batteries, V_BAT_V2 represent two joints series connection battery voltage and.When described chip R5460N208AA detecting that the voltage of battery overcharges signal by overcharging control pin (Cout) output when being greater than described overcharge detection voltage threshold, controlling N-channel MOS pipe Q8 and turning off, to cut off the charge circuit of battery; When described chip R5460N208AA detects that the voltage of battery is less than the additives for overcharge protection releasing voltage threshold of described battery; then overcharge ring off signal by overcharging control pin (Cout) output; control N-channel MOS pipe Q8 conducting again, with the charge circuit of turn-on battery.The annexation of other pins of chip R5460N208AA, has nothing to do with inventive point of the present utility model, does not elaborate, keep its original annexation at this.Those skilled in the art are to be understood that, other chips or circuit is adopted also to be fine, when battery is a batteries time, can adopt chip R5402N101KD to realize, the annexation of chip R5402N101KD pin is with reference to said chip R5460N208AA.
Preferably; the charge protector of battery that the present embodiment provides; equalizing charge protection module can also be comprised; for at described battery be two joints series connection battery time; judging whether the pressure reduction of described two batteries exceedes preset value, when being greater than described preset value, then balanced discharge being carried out to two batteries; when being less than or equal to described preset value, stop carrying out balanced discharge to two batteries.
In the process that two batteries series connection use, the voltage of battery can not be identical, and namely the electricity of battery is unbalanced.If two batteries use under being in imbalance for a long time, then likely cause the danger of cell damage.Described equalizing charge protection module can detect the electricity of two batteries; when detecting that the pressure reduction of two batteries is greater than preset value; then described balanced discharge protection module carries out balanced discharge with the euqalizing current value pre-seted to two batteries; when detecting that the pressure reduction of two batteries is less than or equal to preset value, then balanced discharge is stopped to two batteries.
As a kind of specific implementation, as shown in Figure 8, balanced discharge protection module can adopt chip BQ20209 to realize.Simultaneously; chip BQ20209 can detect the voltage of battery; when the voltage of described battery is greater than secondary additives for overcharge protection voltage threshold; then export secondary overcharge signal to described 4th P channel MOS tube Q1 through N-channel MOS pipe Q23; to turn off described 4th P channel MOS tube Q1, then cut off the charge circuit of battery.It further ensures that the safety in battery charging process.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (9)
1. a charge protector of battery, is characterized in that, comprising: at least one anti-battery back discharge module, and for preventing battery to charge power supply back discharge, described anti-battery back discharge module comprises:
Detect charging power modules, for judging described charge power supply and described battery whether exact connect ion, exporting the first level when described charge power supply exact connect ion, exporting second electrical level when the non-exact connect ion of described charge power supply;
Controlled switch, the input of described controlled switch is connected with the positive pole of described charge power supply, the output of described controlled switch is connected with the positive pole of described battery, the controlled end of described controlled switch is connected with described detection charging power modules, when described controlled switch receives described first electric conducts, disconnect when receiving described second electrical level.
2. charge protector of battery according to claim 1; it is characterized in that; described detection charging power modules comprises: Hall element (U11), a P channel MOS tube (Q24) and the first resistance (R74), wherein
The input of described Hall element (U11) is connected with the positive pole of described charge power supply, one end of described first resistance (R74), the source electrode of a described P channel MOS tube (Q24) respectively, the output of described Hall element (U11) is connected with the other end of described first resistance (R74), the grid of a described P channel MOS tube (Q24) respectively, for detecting described charge power supply and described battery whether exact connect ion;
The drain electrode of a described P channel MOS tube (Q24) is as the output of described detection charging power modules.
3. charge protector of battery according to claim 1; it is characterized in that; described controlled switch comprises: the 2nd P channel MOS tube (Q2), the 3rd N-channel MOS pipe (Q5), the second resistance (R1), the 3rd resistance (R3) and the 4th resistance (R8); wherein
One end of described 4th resistance (R8) is as the controlled end of described controlled switch; The other end is connected with the grid of described 3rd N-channel MOS pipe (Q5);
The source electrode of described 3rd N-channel MOS pipe (Q5) is connected with the negative pole of described charge power supply; The drain electrode of described 3rd N-channel MOS pipe (Q5) is connected with one end of described 3rd resistance (R3);
The other end of described 3rd resistance (R3) is connected with the described grid of the 2nd P channel MOS tube (Q2), one end of described second resistance (R1) respectively;
The other end of described second resistance (R1) is connected with the source electrode of described 2nd P channel MOS tube (Q2);
The drain electrode of described 2nd P channel MOS tube (Q2) is as the input of described controlled switch;
The source electrode of described 2nd P channel MOS tube (Q2) is as the output of described controlled switch.
4. charge protector of battery according to claim 1, is characterized in that, described anti-battery back discharge module is multiple, and the described controlled switch of described anti-battery back discharge module is connected in series.
5. charge protector of battery according to claim 1; it is characterized in that; also comprise: charge power supply over-voltage protection module; for when the voltage of charge power supply is greater than predetermined threshold value; cut off the charge circuit of battery; described charge power supply over-voltage protection module comprises the 4th P channel MOS tube (Q1), the first diode (D1) and the 5th resistance (R7), wherein
The source electrode of described 4th P channel MOS tube (Q1) is connected with the positive pole of described charge power supply, the negative electrode of described first diode (D1) respectively;
The drain electrode of described 4th P channel MOS tube (Q1) is connected with the positive pole of described battery;
The grid of described 4th P channel MOS tube (Q1) is connected with the anode of described first diode (D1), one end of described 5th resistance (R7) respectively;
The other end of described 5th resistance (R7) is connected with the negative pole of described charge power supply.
6. charge protector of battery according to claim 1, is characterized in that, also comprises at least one additives for overcharge protection module, and for limiting voltage during battery charging, described additives for overcharge protection module comprises:
Voltage detection unit, for judging whether the voltage of described battery is greater than the overcharge detection voltage threshold of described battery, exports overcharge signal when the voltage of described battery is greater than described overcharge detection voltage threshold;
First controlled switch, the controlled end of described first controlled switch is connected with described voltage detection unit, disconnects when the controlled end of described first controlled switch receives described overcharge signal the charge circuit then cutting off battery.
7. charge protector of battery according to claim 6; it is characterized in that; described additives for overcharge protection module is multiple; described first controlled switch of described additives for overcharge protection module is connected in series; when voltage detection unit exports described overcharge signal described in any one in described multiple additives for overcharge protection module, then control the charge circuit that corresponding described first controlled switch cuts off battery.
8. the charge protector of battery according to claim 6 or 7; it is characterized in that; the additives for overcharge protection that when described voltage detection unit is also for judging that described first controlled switch disconnects, whether the voltage of battery is less than described battery removes voltage threshold, when the voltage of described battery be less than to control when described additives for overcharge protection removes voltage threshold described first controlled switch again conducting with the charge circuit of turn-on battery.
9. charge protector of battery according to claim 1; it is characterized in that; also comprise equalizing charge protection module; for at described battery be two joints series connection battery time; judging whether the pressure reduction of described two batteries exceedes preset value, when being greater than described preset value, then balanced discharge being carried out to two batteries; when being less than or equal to described preset value, stop carrying out balanced discharge to two batteries.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725910.1U CN204205573U (en) | 2014-11-27 | 2014-11-27 | Charge protector of battery |
| PCT/CN2015/078782 WO2015172710A1 (en) | 2014-05-13 | 2015-05-12 | Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery |
| EP15792078.6A EP3145043B1 (en) | 2014-05-13 | 2015-05-12 | Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery |
| US15/310,520 US20170170653A1 (en) | 2014-05-13 | 2015-05-12 | Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725910.1U CN204205573U (en) | 2014-11-27 | 2014-11-27 | Charge protector of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204205573U true CN204205573U (en) | 2015-03-11 |
Family
ID=52663493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725910.1U Active CN204205573U (en) | 2014-05-13 | 2014-11-27 | Charge protector of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204205573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172710A1 (en) * | 2014-05-13 | 2015-11-19 | 北京拓盛电子科技有限公司 | Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery |
| CN110021986A (en) * | 2018-01-05 | 2019-07-16 | 郑州宇通客车股份有限公司 | A kind of wireless charging system and wireless charging device |
-
2014
- 2014-11-27 CN CN201420725910.1U patent/CN204205573U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172710A1 (en) * | 2014-05-13 | 2015-11-19 | 北京拓盛电子科技有限公司 | Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery |
| CN110021986A (en) * | 2018-01-05 | 2019-07-16 | 郑州宇通客车股份有限公司 | A kind of wireless charging system and wireless charging device |
| CN110021986B (en) * | 2018-01-05 | 2021-03-02 | 郑州宇通客车股份有限公司 | Wireless charging system and wireless charging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104600676B (en) | Battery protecting circuit, electric energy provide device and electronic installation | |
| CN102222949B (en) | Device and method for managing batteries | |
| CN101916983A (en) | Battery protection circuit and portable light | |
| CN204216632U (en) | Battery discharge prevention circuit | |
| CN204967307U (en) | Battery measurement control circuit and battery measurement system | |
| CN202014087U (en) | Lithium battery charging protection circuit for portable system | |
| CN105098933A (en) | Battery monomer acquisition detection device | |
| TWI610486B (en) | Active balance charging device | |
| CN105470925A (en) | Secondary battery protection circuit and battery device | |
| CN104218536A (en) | Rechargeable battery protector | |
| CN207603256U (en) | A kind of lithium titanate battery managing chip | |
| CN202405763U (en) | Over-discharge protection circuit and battery utilizing same | |
| CN102231516B (en) | Battery protection board, power battery and power battery pack | |
| CN204205573U (en) | Charge protector of battery | |
| CN202424257U (en) | Battery charging circuit | |
| CN204145003U (en) | A kind of lithium battery management devices | |
| CN203278206U (en) | Battery pack discharging protection circuit and device | |
| CN201222661Y (en) | Lithium battery protection device with zero discharging function during storage period | |
| CN105048568A (en) | Circuit and method for solving problems of mutual charging and discharging of multiple battery packs | |
| CN104779669A (en) | Lithium ion battery pack provided with charging protection circuit | |
| CN202309041U (en) | Floating charge protective circuit | |
| CN204349435U (en) | A kind of charged state does not allow the lithium battery protection board discharged | |
| CN2938522Y (en) | Overload protection circuit of power lithium ion battery | |
| CN105048017A (en) | Method for solving problem of mutual charging and discharging among multiple battery packs | |
| CN203466560U (en) | Intelligent lithium battery guide plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |