CN202906495U - Mobile power supply - Google Patents
Mobile power supply Download PDFInfo
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- CN202906495U CN202906495U CN 201220346157 CN201220346157U CN202906495U CN 202906495 U CN202906495 U CN 202906495U CN 201220346157 CN201220346157 CN 201220346157 CN 201220346157 U CN201220346157 U CN 201220346157U CN 202906495 U CN202906495 U CN 202906495U
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Abstract
The utility model provides a mobile power supply. The mobile power supply comprises a battery protection circuit, a battery, a switch combination circuit and an internal load circuit, wherein the battery supplies the power outside via the internal load circuit. The mobile power supply is also provided with an enable control circuit for enabling or disabling the internal load circuit. The enable control circuit comprises a switching device, when the switching device is turned on, the internal load circuit is disabled, and when the switching device is turned off, the internal load circuit is enabled. Thus, when the user does not use the mobile power supply to supply the power outside, the switching device is manually turned off to make the internal load resistor stop working, the load current of the battery is reduced and the standby life of the battery is prolonged. When the discharge over-current protection occurs on the mobile power supply for supplying the power outside, the user can manually turn off the switching device to make the internal load resistor stop working, the load current of the battery is reduced, and furthermore the battery is made to resume a normal discharge state.
Description
[technical field]
The utility model relates to field of power supplies, particularly a kind of portable power source.
[background technology]
Portable power source is a kind of portable charger that integrates power supply and charge function, and it can charge or the standby power supply whenever and wherever possible to digital equipments such as mobile phones.Generally by lithium cell or dry cell as charge storage unit.Be different from the battery of interiors of products configuration, also be externally hanging battery.The general multiple power sources adapter that is equipped with, usually have large capacity, multipurpose, volume is little, the life-span is long and the characteristics such as safe and reliable, be can be whenever and wherever possible to be the functional product of the multiple digital product power supply such as mobile phone, MP3, MP4, mobile phone, PDA, palmtop PC, handheld device or standby charging.
Common described portable power source inside has battery protecting circuit and comes discharging and recharging of the battery in it protected.When portable power source owing to output port short circuit or load be heavier etc. when reason causes output current excessive, described battery protecting circuit can cause described portable power source to enter the discharge over-current guard mode.When the positive pole of the described battery pressure reduction to the negative pole of the enough height of pressure reduction on ground or described battery to ground was enough low, described battery protecting circuit just can allow the battery recovery normal power supply.Yet, generally, eliminate even cause the reason of discharge overcurrent, such as having recovered again not short circuit after the short circuit, again load have been got rid of after the heavy duty, described portable power source can't reach the condition that withdraws from the discharge overcurrent protection usually.Therefore, described portable power source system is eliminated even cause the reason of discharge overcurrent after entering the discharge overcurrent protection, and system still can enter the state of self-locking.Only have external power source is connected to described portable power source, the described portable power source externally driving of power supply is issued to the condition that withdraws from the discharge overcurrent protection, and then recovers the normal power supply of described battery.In other words, described mobile battery must could activate again by connecting external power source after entering the discharge overcurrent protection, and this has hindered the application of portable power source greatly, has brought inconvenience also for the use of portable power source.
Therefore, be necessary to provide a kind of improved portable power source to overcome the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of portable power source; it can not withdraw from discharge overcurrent protection state in the situation by external power supply; so that the normal supplying power for outside of battery also can reduce the internal load electric current in addition when not using described portable power source.
In order to address the above problem; the utility model provides a kind of portable power source; it comprises battery protecting circuit, battery, switch combination circuit and internal load circuit; described battery is externally powered via described internal load circuit, described portable power source also be provided with enable or the described internal load circuit of disable enable control circuit.
Further, whether described battery protecting circuit detects the discharge of described battery unusual, and if so, then discharge control signal is forbidden in output, and if not, then output allows discharge control signal; Described switch combination circuit cuts off the discharge loop of described battery based on the described discharge control signal of forbidding, based on allowing discharge control signal to be communicated with the discharge loop of described battery.
Further; described discharge comprises that unusually the discharge overcurrent is unusual or the discharge overvoltage is unusual; both any one think that unusually discharge is unusual; when unusual and discharge overvoltage is unusual at the discharge overcurrent; described switch combination circuit based on described forbid that discharge control signal cuts off the discharge loop of described battery after; enter discharge overcurrent protection state; whether whether the absolute value that this moment, described battery protecting circuit detected the positive pole voltage difference over the ground of described battery is higher than a predetermined absolute value that withdraws from the negative pole voltage difference over the ground of voltage threshold or described battery is lower than another predetermined voltage threshold that withdraws from; if; then output allows discharge control signal; so that the described switch combination circuit discharge loop of the described battery of conducting again; otherwise continue output and forbid discharge control signal; under discharge overcurrent protection state; described battery still can be exported a weak current, the voltage that this weak current can charge to draw high gradually described anode to the positive pole that is connected to battery and the electric capacity between the ground.
Further, under discharge overcurrent protection state, between the negative pole of battery and ground, keep a very weak discharge path so that described battery still can be exported described weak current, this weak current be milliampere and following grade other.
Further, the described control circuit that enables includes a switching device, and when this switching device conducting, the described internal load circuit of disable when this switching device cut-off, enables described internal load circuit.
Further, the first link ground connection of described switching device, the second link is connected to a power end by resistance, when described switching device conducting, the logic level of described the second link is ground level, when described switching device cut-off, the logic level of described the second link is high level, and the second link is used for enabling or the described booster circuit of disable.
Further, described internal load circuit comprises booster circuit, described booster circuit comprises boost bleeder circuit and boost control circuit, the second link of described switching device links to each other with the Enable Pin of described boost control circuit, and the second link of described switching device also links to each other with the Enable Pin of the described bleeder circuit that boosts.
Further, the described bleeder circuit that boosts comprises the output that is connected on successively portable power source and two divider resistances and the switching tube between the ground, and the Enable Pin of the described bleeder circuit that boosts is the grid of described switching tube.
Further, the described bleeder circuit that boosts comprises the output that is connected on successively portable power source and two divider resistances and the inverter between the ground, the Enable Pin of the described bleeder circuit that boosts is the input of described inverter, the output of inverter is connected with one of them divider resistance, and the low level of this inverter output is ground.
Further, the conducting of described switching device or to close be mechanically operated.
Compared with prior art, in the utility model, be provided with enable or the described internal load circuit of disable enable control circuit, when the user does not use the portable power source supplying power for outside, manually disable is described enables control circuit so that the internal load circuit can not be worked, reduce the cell load electric current, prolong the battery standby life-span.When the discharge overcurrent protection occurs in the portable power source of supplying power for outside; manually disable is described enables control circuit so that the internal load circuit can not be worked for the user; reduce the cell load electric current, make battery can return to the condition that withdraws from discharge prevention, thereby recover regular picture.When normal the use, can manually enable described switching device, so that follow-up internal load circuit can work, realize the normal supplying power for outside of described portable power source.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 is the portable power source structured flowchart in one embodiment in the utility model;
Fig. 2 is the internal load circuit among Fig. 1 and the connected mode circuit block diagram in one embodiment that enables control circuit;
Fig. 3 is the internal load circuit among Fig. 1 and the connected mode circuit block diagram in another embodiment that enables control circuit.
[embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.Unless stated otherwise, herein connection, the word that the expression that links to each other, join is electrically connected all represents directly or indirectly to be electrical connected.
Portable power source of the present utility model be provided with enable or the described internal load circuit of disable enable control circuit, when the user does not use the portable power source supplying power for outside, manually disable is described enables control circuit so that the internal load circuit can not be worked, reduce the cell load electric current, prolong the battery standby life-span.When the discharge overcurrent protection occurs in the portable power source of supplying power for outside; manually disable is described enables control circuit so that the internal load circuit can not be worked for the user; reduce the cell load electric current, make battery can return to the condition that withdraws from discharge prevention, thereby recover regular picture.When normal the use, can manually enable described switching device, so that follow-up internal load circuit can work, realize the normal supplying power for outside of described portable power source.
Fig. 1 is portable power source 100 structured flowchart in one embodiment in the utility model.As shown in Figure 1, described portable power source 100 comprises charging control circuit 110, battery protecting circuit 120, switch combination circuit 130, battery 140 and internal load circuit 150, and described battery 140 is externally powered via described internal load circuit 150.
The input of described charging control circuit 110 can connect external power supply, and output connects the anodal BATP of described battery 140, and it can be controlled the charging of described battery 140 described external power supply.Such as, the control charging current, when control stops described battery 140 is charged.Do not affect the realization of the technical solution of the utility model about the detailed charging control process of described charging control circuit 110, and the charging control process of described battery can adopt any one battery charging control technology of the prior art, so locate to repeat no more.
Described battery protecting circuit 120 is used for described battery is carried out charge protection and discharge prevention.
Whether the charging that described battery protecting circuit 120 detects described battery is unusual; if unusual; then forbid charging control signal by its charging control output end C_OUT output, if not unusual, then allow charging control signal by its charging control output end C_OUT output.This is forbidden charging control signal and allows charging control signal can be two kinds of logic states of a signal, and such as forbidding that charging control signal is low level, described permission charging control signal is high level.Described charging generally includes two kinds unusually, and a kind of is that the charging overcurrent is unusual, and a kind of is that the charging overvoltage is unusual, and both any one occur unusually then thinking that charging is unusual.Described charging overcurrent refers to the charging current of battery unusually more than or equal to predetermined charging overcurrent threshold value, otherwise it is not unusual to be considered as charging current.Described charging overvoltage refers to the charging voltage of battery unusually more than or equal to predetermined charging overvoltage threshold, otherwise it is not unusual to be considered as charging voltage.
Whether the discharge that described battery protecting circuit 120 detects described battery is unusual; if unusual; then forbid discharge control signal by its control of discharge output D_OUT output, if not unusual, then allow discharge control signal by its control of discharge output D_OUT output.This is forbidden discharge control signal and allows discharge control signal can be two kinds of logic states of a signal, and such as forbidding that discharge control signal is low level, described permission discharge control signal is high level.Described discharge generally includes two kinds unusually, and a kind of is that the discharge overcurrent is unusual, and a kind of is that the discharge overvoltage is unusual, and both any one occur unusually then thinking that discharge is unusual.Described discharge overcurrent refers to that unusually the discharging current of battery is less than or equal to predetermined discharge overcurrent threshold value, otherwise it is not unusual to be considered as discharging current.Described discharge overvoltage refers to the discharge voltage of battery unusually more than or equal to the predetermined discharge overvoltage threshold, otherwise it is not unusual to be considered as discharge voltage.
In one embodiment; described battery protecting circuit 120 is determined described discharging current or charging current based on the voltage of the voltage of the link VSS that links to each other with the negative pole BATN of battery 140 and the link VM that is connected to the ground, and described battery protecting circuit 120 is determined described discharge voltage and charging voltage based on the voltage of the link VDD that links to each other with the anodal BATP of battery 140 with the voltage of the link VSS that links to each other with the negative pole BATN of battery 140.
Described switch combination circuit 130 cuts off the charge circuit of described battery 140 according to the described charging control signal of forbidding, according to the charge circuit of the described battery 140 of described permission charging control signal conducting, so that described battery 140 is carried out charge protection.Described switch combination circuit 130 cuts off the discharge loop of described battery 140 based on the described discharge control signal of forbidding, is communicated with the discharge loop of described battery 140 based on described permission discharge control signal, so that described battery is carried out discharge prevention.
Described switch combination resistance 130 can adopt general switch combination in the relevant battery charging and discharging path of the prior art, be associated between the negative pole and ground of battery 140 such as two NMOS (N-type Metal Oxide Semiconductor) strings of transistors, at diode of the drain-source two ends of each nmos pass transistor series connection, the grid of one of them nmos pass transistor receives the discharge control signal (comprise and forbid discharge control signal and allow discharge control signal) from described discharge output control terminal, the grid of another nmos pass transistor receives the charging control signal (comprise and forbid charging control signal and allow charging control signal) from described charging output control terminal, a variety of implementation methods in the technology are arranged now, can choose at random, in the utility model, not do particular determination.
In the utility model, the anodal BATP of battery 140 is referred to as internal load circuit 150 to the circuit between the output VOUT of described portable power source, it may consume the output current on the described battery 140.Corresponding with the internal load circuit, the load circuit that is connected in the output VOUT of described portable power source 100 can be referred to as external load circuit.
When unusual and discharge overvoltage is unusual at the discharge overcurrent, described switch combination circuit 130 based on described forbid that discharge control signal cuts off the discharge loop of described battery after, described portable power source enters discharge overcurrent protection state.At this moment; whether whether the absolute value that described battery protecting circuit 120 detects the anodal BATP voltage difference over the ground of described battery is higher than a predetermined absolute value that withdraws from the negative pole BATN voltage difference over the ground of voltage threshold or described battery is lower than another and withdraws from predetermined voltage threshold (namely withdrawing from the condition of discharge overcurrent protection); if; then output allows discharge control signal; so that described switch combination circuit 130 discharge loop of the described battery 140 of conducting again; thereby withdraw from described discharge prevention state; recover the normal supplying power for outside of battery, otherwise continue the described discharge control signal of forbidding of output.
Yet, described in background, generally, to eliminate even cause the reason of discharge overcurrent, described portable power source 100 can't reach the condition that withdraws from the discharge overcurrent protection usually, therefore must the external power supply insertion could again activate described portable power source.
For this reason in the utility model; after portable power source 100 enters discharge overcurrent protection state; described battery 140 still can be exported a weak current; such as milliampere and following other electric current of level; if discharge overcurrent reason is eliminated; this weak current can be charged to the anodal BATP that is connected to battery 140 and the capacitor C 1 between the ground; along with the charging of described weak current to described capacitor C 1; the cathode voltage of described battery raises gradually; also gradually rising of the cathode voltage of described battery (this moment, cathode voltage was negative value); the absolute value that is higher than the negative pole BATN voltage difference over the ground of predetermined voltage threshold or described battery at the absolute value of the anodal BATP of described battery voltage difference over the ground is lower than predetermined voltage threshold; described battery protecting circuit 120 outputs allow discharge control signal, so that the external normal power supply of described battery recovery.For example; suppose that described cell voltage be BATP to the pressure reduction of BATN is 3.7V; and for battery protecting circuit 120; (voltage such as negative pole BATN is negative 0.14V when the absolute value of the negative pole BATN voltage difference over the ground that detects battery is lower than 0.15V; ground level is 0V) or the positive pole voltage difference over the ground of battery when being higher than 3.55V, battery protecting circuit 120 just can be exported and allow discharge control signal again to make the discharge path conducting of described battery.
In one embodiment, under discharge overcurrent protection state, can be at the negative pole BATN of described battery to a weak discharge path be set between the ground, thus can produce weak current, this weak discharge by on have kilohm and other resistance of higher level.For instance, under discharge overcurrent protection state, the negative pole BATN of described battery by link VSS and VM with conducting, be provided with on the conduction path kilohm and other resistance of higher level.
Yet; in order to reduce the power consumption under the discharge prevention state; also avoid under the state of discharge overcurrent protection, destroying the internal circuit of external loading and portable power source; common described weak current all be milliampere and following level other; in practice; described weak current is when charging to draw high the cathode voltage of described battery to described capacitor C 1; when not arriving the condition that withdraws from the discharge overcurrent protection; will produce some load currents on the follow-up internal load circuit; when these internal load electric currents during greater than described weak current; described weak current is charged to described capacitor C 1 with regard to illegal again; thereby can't continue to rise to the voltage between the ground with the anodal BATP that causes battery, can not withdraw from the discharge prevention state.
In one embodiment, in order to overcome the problems referred to above, also be provided with in the described portable power source 100 enable or the described internal load circuit 150 of disable enable control circuit.The described control circuit that enables includes a switching device SW1, and when this switching device conducting, the described internal load circuit of disable when this switching device cut-off, enables described internal load circuit.
When the discharge overcurrent protection occurs in the portable power source of supplying power for outside; this moment, discharge control signal was forbidden in described battery protecting circuit 120 outputs; the user manually the described switching device SW1 of conducting so that described internal load circuit 150 quits work; reduce or eliminate the load current of described internal load circuit 150; the weak current of described battery 140 outputs this moment can charge constantly for described capacitor C 1; reach the condition that withdraws from discharge overcurrent protection state so that the cathode voltage of described battery constantly raises, and then so that described portable power source withdraws from discharge overcurrent protection state.When needs used the portable power source supplying power for outside, the user can manually disconnect described switching device SW1, so that described internal load circuit 150 is started working, described battery can externally carry out normal power supply by described internal load circuit.
Described internal load circuit is connected various connections and implementation with switching device, below selectivity describe.
Fig. 2 is the internal load circuit among Fig. 1 and enables the circuit block diagram of control circuit in the first embodiment.As shown in Figure 2, described internal load circuit 150 comprises (BOOST) circuit that boosts, and usually generally is connected with booster circuit in the rear end of battery 140, externally powers afterwards so that cell voltage is boosted.For instance; described BOOST circuit generally can return at the positive pole voltage over the ground of battery predetermined voltage threshold and start working before withdrawing from the discharge prevention state to reach; its work power consumption is far longer than the weak current of battery output under the described overcurrent protection state; the positive pole of battery voltage difference over the ground can't be elevated to the predetermined threshold that recovers normal power supply like this; after causing portable power source output current overload, it is normal that system also can't recover.
The described control circuit that enables includes a switching device SW1, the first link ground connection of described switching device SW1, the second link is connected to a power end (being the output VOUT of portable power source among Fig. 2) by resistance R 4, when described switching device SW1 conducting, the logic level of described the second link is low level, when described switching device cut-off, the logic level of described the second link is high level, and the second link is used for enabling or the described booster circuit of disable.
Described booster circuit comprises the output circuit that boosts, the bleeder circuit that boosts, boost control circuit and booster power supply circuit.The second link of described switching device SW1 links to each other with the Enable Pin EN of described boost control circuit, and the second link of described switching device also links to each other with the Enable Pin of the described bleeder circuit that boosts.
The described output circuit that boosts comprises an inductance L 1, a nmos pass transistor MN1, a diode D1, one end of inductance L 1 (input of booster circuit) is by linking to each other with the positive pole of battery, the other end links to each other with the anode of diode D1, the negative electrode of diode D1 is the output VOUT of described booster circuit, the grid of described nmos pass transistor receives output control signal (EXT end) from described boost control circuit as the control end of the output circuit that boosts, the drain electrode of described nmos pass transistor MN1 links to each other with the intermediate node of inductance L 1 with diode D1, and the source electrode of described nmos pass transistor MN1 is connected to the ground.The described bleeder circuit that boosts comprises the second resistance R 2, the 3rd resistance R 3 and the switching tube MN2 that is connected between output VOUT and the ground, the intermediate node of the second resistance R 2 and the 3rd resistance R 3 links to each other with the feedback end FB of described boost control circuit, and being used for provides feedback voltage to it.Described switching tube MN2 is nmos pass transistor, and its grid is the Enable Pin of the described bleeder circuit that boosts.
Described booster power supply circuit comprises an end and the resistance R 1 between the ground and the capacitor C 2 that is connected on inductance L 1, node between the two is connected to the power end VDD of described boost control circuit, the test side LX of described boost control circuit connects the node between described inductance L 1 and the diode D1, the earth terminal GND ground connection of described boost control circuit, the Enable Pin EN of described boost control circuit is by the output VOUT of resistance R 4 with described booster circuit.In when work, described boost control circuit according to feedback voltage produce described output control signal to the grid of described nmos pass transistor so that whole booster circuit is controlled, so that the output VOUT of described booster circuit obtains suitable output voltage.
As shown in Figure 2, when described switching device SW1 cut-off, its second link is high level, described switching tube MN2 conducting, the described bleeder circuit normal operation of boosting, described boost control circuit normal operation.When described switching device SW conducting, its second link is low level, described switching tube MN2 cut-off, and the described bleeder circuit that boosts can't work, and described boost control circuit can't work.
The resistance value that it should be noted that described resistance R 4 must be larger, need be megaohm and higher level other, can reduce like this load current that resistance R 4 produces.
Booster circuit among Fig. 2 in the utility model can also adopt the booster circuit of other types of the prior art, or the control circuit of other types.
Fig. 3 is the internal load circuit among Fig. 1 and enables control circuit circuit block diagram in a second embodiment that described internal load circuit still comprises booster circuit.
Circuit among Fig. 3 and the difference of the circuit among Fig. 2 are: the switching tube MN2 in the described bleeder circuit that boosts has become an inverter INV1, the low level of this inverter INV1 output is ground, this inverter INV1 connects one of them divider resistance R3, and the Enable Pin of the described bleeder circuit that boosts is the input of described inverter.
As shown in Figure 3, when described switching device SW1 cut-off, its second link is high level, described inverter INV1 output low level, the described bleeder circuit normal operation of boosting, described boost control circuit normal operation.When described switching device SW conducting, its second link is low level, and inverter INV1 exports high level, and the described bleeder circuit that boosts can't work, and described boost control circuit can't work.
As mentioned above, the other end of described resistance R 4 is connected to power end, and in Fig. 2 and Fig. 3, described power end all is the output VOUT of portable power source.In other examples of implementation, the power end that described resistance R 4 connects can be other high level nodes, such as the anodal BATP of battery, and the intermediate node of resistance R 1 and capacitor C 2 etc.
In above-mentioned example; introduce take the internal load circuit as booster circuit as example; described internal load circuit can also be other any internal load circuit obviously; as long as this circuit produces load current in described portable power source withdraws from the process of discharge overcurrent protection state, the above-mentioned switching device of can sampling makes its unlatching work or quits work.The position of described switching device in described internal load circuit also can be determined as required, as long as this switching device can play the function of opening or closing described internal load circuit.
Portable power source of the present utility model be provided with enable or the described internal load circuit of disable enable control circuit, when the user does not use the portable power source supplying power for outside, manually disable is described enables control circuit so that the internal load circuit can not be worked, reduce the cell load electric current, prolong the battery standby life-span.When the discharge overcurrent protection occurs in the portable power source of supplying power for outside; manually disable is described enables control circuit so that the internal load circuit can not be worked for the user; reduce the cell load electric current, make battery can return to the condition that withdraws from discharge prevention, thereby recover regular picture.When normal the use, can manually enable described switching device, so that follow-up internal load circuit can work, realize the normal supplying power for outside of described portable power source.
Enabling expression in the utility model makes its work, disable represent to make it not work.
Above-mentioned explanation has fully disclosed embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.
Claims (10)
1. portable power source; it comprises battery protecting circuit, battery, switch combination circuit and internal load circuit; described battery is externally powered via described internal load circuit, it is characterized in that, its also be provided with enable or the described internal load circuit of disable enable control circuit.
2. portable power source according to claim 1 is characterized in that, whether described battery protecting circuit detects the discharge of described battery unusual, and if so, then discharge control signal is forbidden in output, and if not, then output allows discharge control signal; Described switch combination circuit cuts off the discharge loop of described battery based on the described discharge control signal of forbidding, based on allowing discharge control signal to be communicated with the discharge loop of described battery.
3. portable power source according to claim 2; it is characterized in that; described discharge comprises that unusually the discharge overcurrent is unusual or the discharge overvoltage is unusual; both any one think that unusually discharge is unusual; when unusual and discharge overvoltage is unusual at the discharge overcurrent; described switch combination circuit based on described forbid that discharge control signal cuts off the discharge loop of described battery after; enter discharge overcurrent protection state; whether whether the absolute value that this moment, described battery protecting circuit detected the positive pole voltage difference over the ground of described battery is higher than a predetermined absolute value that withdraws from the negative pole voltage difference over the ground of voltage threshold or described battery is lower than another predetermined voltage threshold that withdraws from; if; then output allows discharge control signal; so that the described switch combination circuit discharge loop of the described battery of conducting again; otherwise continue output and forbid discharge control signal; under discharge overcurrent protection state; described battery still can be exported a weak current, the voltage that this weak current can charge to draw high gradually described anode to the positive pole that is connected to battery and the electric capacity between the ground.
4. portable power source according to claim 3; it is characterized in that, under discharge overcurrent protection state, between the negative pole of battery and ground, keep a very weak discharge path; so that described battery still can be exported described weak current, this weak current be milliampere and following level other.
5. arbitrary described portable power source is characterized in that according to claim 1-4, and the described control circuit that enables includes a switching device, when this switching device conducting, the described internal load circuit of disable when this switching device cut-off, enables described internal load circuit.
6. portable power source according to claim 5, it is characterized in that, the first link ground connection of described switching device, the second link is connected to a power end by resistance, when described switching device conducting, the logic level of described the second link is ground level, when described switching device cut-off, the logic level of described the second link is high level, and the second link is used for enabling or the described booster circuit of disable.
7. portable power source according to claim 6, it is characterized in that, described internal load circuit comprises booster circuit, described booster circuit comprises boost bleeder circuit and boost control circuit, the second link of described switching device links to each other with the Enable Pin of described boost control circuit, and the second link of described switching device also links to each other with the Enable Pin of the described bleeder circuit that boosts.
8. portable power source according to claim 7, it is characterized in that, the described bleeder circuit that boosts comprises the output that is connected on successively portable power source and two divider resistances and the switching tube between the ground, and the Enable Pin of the described bleeder circuit that boosts is the grid of described switching tube.
9. portable power source according to claim 7, it is characterized in that, the described bleeder circuit that boosts comprises the output that is connected on successively portable power source and two divider resistances and the inverter between the ground, the Enable Pin of the described bleeder circuit that boosts is the input of described inverter, the output of inverter is connected with one of them divider resistance, and the low level of this inverter output is ground.
10. portable power source according to claim 5 is characterized in that, the conducting of described switching device or to close be mechanically operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346157 CN202906495U (en) | 2012-07-17 | 2012-07-17 | Mobile power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346157 CN202906495U (en) | 2012-07-17 | 2012-07-17 | Mobile power supply |
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| Publication Number | Publication Date |
|---|---|
| CN202906495U true CN202906495U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220346157 Withdrawn - After Issue CN202906495U (en) | 2012-07-17 | 2012-07-17 | Mobile power supply |
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| CN (1) | CN202906495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751765A (en) * | 2012-07-17 | 2012-10-24 | 无锡中星微电子有限公司 | Mobile power supply |
| WO2015123880A1 (en) * | 2014-02-23 | 2015-08-27 | 宇龙计算机通信科技(深圳)有限公司 | Battery management apparatus, portable power source and battery management method |
-
2012
- 2012-07-17 CN CN 201220346157 patent/CN202906495U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751765A (en) * | 2012-07-17 | 2012-10-24 | 无锡中星微电子有限公司 | Mobile power supply |
| CN102751765B (en) * | 2012-07-17 | 2014-08-13 | 无锡中星微电子有限公司 | Mobile power supply |
| WO2015123880A1 (en) * | 2014-02-23 | 2015-08-27 | 宇龙计算机通信科技(深圳)有限公司 | Battery management apparatus, portable power source and battery management method |
| CN106063023A (en) * | 2014-02-23 | 2016-10-26 | 宇龙计算机通信科技(深圳)有限公司 | Battery management apparatus, portable power source and battery management method |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20140813 |
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