CN1661879A - Control circuit for long-term storage of batteries - Google Patents
Control circuit for long-term storage of batteries Download PDFInfo
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- CN1661879A CN1661879A CN2004100069130A CN200410006913A CN1661879A CN 1661879 A CN1661879 A CN 1661879A CN 2004100069130 A CN2004100069130 A CN 2004100069130A CN 200410006913 A CN200410006913 A CN 200410006913A CN 1661879 A CN1661879 A CN 1661879A
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Abstract
The invention relates to a control circuit for long-term storage of batteries, which is provided with a switch unit connected between a battery and a protection circuit, and a latch unit connected to the control end of the switch unit for controlling the switch unit to be switched on or off; in addition, a trigger unit is connected in front of the latch unit and is connected with external power, when the external power is input, the trigger unit sends out a second trigger signal, and the latch unit controls the switch unit to conduct the connection between the battery and the protection circuit, so that the battery can still normally supply power when not used for a long time. The invention can completely cut off the unused battery and connect the protection circuit or the power supply loop, and can ensure that the battery can be stored for a long time without damaging the battery due to over-long time.
Description
Technical field
The present invention relates to the control circuit that the long timeliness of a kind of battery is preserved, particularly relate to a kind of low-capacity batteries that allows when not using for a long time, still can preserve the control circuit of its internal power, the reason protective circuit is totally damaged power consumption.
Background technology
How stable and long-acting power supply supply are provided; it is important research project in all kinds of small-sized electronic products always; most small-sized electronic product; especially carry-on portable electronic product; as mobile phone, PDA (Personal Digital Assistant) (PDA); be to use a chargeable battery to provide electronic product long-acting and stable powering mode, in this rechargeable battery, can be provided with a protective circuit, can protect rechargeable battery unlikely excessive and burn in when charging.
Employed rechargeable battery in the general small-sized electronic product, be sold to the user on hand before, the capital is can charge 70% electric weight of portion within it, prevent to produce dangerous because of the variations in temperature of transporting to process, and in order to prevent be sold to the user on hand before, because of the time passes and for a long time its internal consumption of power is totally damaged.In addition, general user will mainly also be because the electric weight of its internal cell is quite low through the charging of long-time (eight hours to 12 hours) after buying back new rechargeable battery, if the electric power of battery is not full of, can influence the charge capacity in future.
Yet; employed rechargeable battery in some small-sized electronic product; because of power consumption low; and charge capacity is also quite low, and as blue-tooth earphone, electronic watch etc., and its internal cell user can't pull down charging separately; if do not use for a long time; just be sold to the user on hand after perhaps long-time, the power consumption that then may make rechargeable battery inside because of the protective circuit in the battery totally and causes this battery again can't charge and damages.
With blue-tooth earphone, because its power consumption is very low, therefore manufacturer is that rechargeable battery with a low capacity provides blue-tooth earphone to use mostly, can reduce its production cost on the one hand, moreover because the rechargeable battery volume of low capacity is very little, being applied to can be further microminiaturized with it in the blue-tooth earphone, with abreast of the times trend.Yet this blue-tooth earphone is not when using for a long time, and its protective circuit is probably with the low-capacity batteries approach exhaustion.
In general; the power consumption of protective circuit approximately is about per hour 200 microamperes (μ A) in the blue-tooth earphone; if its rechargeable battery has only the electric weight of 80 milliamperes (mA); represent that then this rechargeable battery is in the time of two to three weeks; electric weight will be lower than chargeable lowest capacity, causes battery to recharge.High-capacity battery (as 700mA) then approximately can have five months pot-life.
After factory finishes the blue-tooth earphone manufacturing, sell at last via the path retailer from dispatching from the factory and to user's hand, to use, process several weeks often less wherein, easily last month, therefore the user is probably after buying back product, just finds the use of at all can't charging of this earphone, again because of pulling down voluntarily, need send former factory back to and change battery, and stay bad impression.For manufacturer, because of product in warranty period, the maintenance of former factory is free, and the intangible cost that is caused is quite huge, no matter with regard to manufacturer or consumer, all is to cause negative influence.
This shows that the battery that uses still has defective in the above-mentioned existing electronic product, and demands urgently further being improved.For solve in the electronic product the problem that exists of the battery that uses, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time being suitable for design is finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the inconvenience and the defective of existence of the battery that uses in the above-mentioned existing small-sized electronic product, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding the control circuit that a kind of novel long timeliness of battery is preserved, can improve the battery that uses in the general existing electronic product, make it have more practicality.Through constantly research, design; and after studying sample and improvement repeatedly; finally successfully work out a kind of simple and easy and control circuit of preserving of the long timeliness of battery cheaply; by control circuit of the present invention; can be effectively with untapped battery cut-out and protective circuit or current supply circuit online fully; and make it not have any consumption, and in the time will using the loop of turn-on battery, and then strengthen the quality of battery.
Summary of the invention
The objective of the invention is to; overcome in the existing electronic product the defective that exists of the battery that uses; and the control circuit that provides a kind of new long timeliness of battery to preserve; technical problem to be solved can make untapped battery cut-out and protective circuit or current supply circuit online fully; so can guarantee battery preservation with can growing timeliness; and not the reason time after causing the battery damage for a long time, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.Control circuit according to the long timeliness preservation of a kind of battery of the present invention's proposition, be to be connected between a battery and the protective circuit, can accept an external power to this battery charge, this control circuit comprises: a switch element, be to be provided with two switch terminals and a control end, this two switch terminals is connected between this battery and this protective circuit, can cut off or this battery of conducting and this protective circuit between be connected; One latch lock unit is to be provided with an input and an output, and this output is connected in the control end of this switch element, in order to the conducting between two switch terminals of controlling this switch element or open circuit; One control unit is the input that is connected in this latch lock unit, is sent to this latch lock unit in order to produce one first trigger signals, controls this switch element and opens circuit, and forms the long timeliness preservation state of this battery; An and trigger element; be input and this latch lock unit that connects this external power; when the input of this external power has electric power input; this trigger element sends one second trigger signals and is sent to this latch lock unit, controls being connected between this this battery of switch element conducting and this protective circuit.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said battery is the rechargeable battery for a low capacity.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said external power is to be a charge power supply.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said protective circuit is made up of a charging current control IC and associated electrical part, and may command is charged to protect this battery to the charging current of this battery.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said switch element is to be a metal oxide field-effect transistor (MOSFET).
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said latch lock unit is formed a flip-flop by two logic reversal devices.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said control unit are to accept the control of a processor and produce this first trigger signals.
The control circuit that the long timeliness of aforesaid battery is preserved, wherein said processor is for controlling the primary clustering of electronic product running, carry out the control program that has the long timeliness of a battery to preserve in it, can make this processor export this first trigger signals to this control circuit.
The control circuit that the long timeliness of aforesaid battery is preserved, the input of this external power that wherein said trigger element connected are electric contact or the electric connections for this external power of connection.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, the invention provides the control circuit that the long timeliness of a kind of battery is preserved, be connected between a battery and the protective circuit, can accept an external power to this battery charge, this control circuit comprises: a switch element, a latch lock unit, a control unit and a trigger element, wherein this switch element is connected between this battery and this protective circuit, can cut off or this battery of conducting and this protective circuit between be connected; And this latch lock unit is connected in the control end of this switch element, in order to control this switch element conducting or to open circuit; This control unit then is connected in this latch lock unit, is sent to this latch lock unit in order to produce one first trigger signals, controls this switch element and opens circuit, and forms the long timeliness preservation state of this battery; And this trigger element then connects input and this latch lock unit of this external power; when an external power is imported; this trigger element sends one second trigger signals and is sent to this latch lock unit, controls being connected between this this battery of switch element conducting and this protective circuit.
By technique scheme, the present invention has following advantage at least: via as can be known above-mentioned, the present invention is provided with a switch element and is connected between a battery and the protective circuit, and be connected in the control end of this switch element by a latch lock unit, in order to control this switch element conducting or to open circuit, before this latch lock unit, connect a control unit, can produce one first trigger signals controls this switch element by this latch lock unit and opens circuit, form the long timeliness preservation state of this battery, do not use approach exhaustion down for a long time in order to avoid battery; Before latch lock unit, connect a trigger element in addition again; and connect an external power; when an external power is imported; this trigger element sends one second trigger signals; control being connected between this this battery of switch element conducting and this protective circuit by this latch lock unit, make this battery still can be in that use for a long time still can normal power supply.
Therefore, the control circuit that the long timeliness of battery of the present invention is preserved can make the electric weight of battery be unlikely long-term use under and be consumed to below the lowest capacity that can recharge, and the function that can guarantee this battery with easy logical circuit is normal, overcome the disappearance of existing known circuit fully, so it is a kind of far different in the structural design of existing known product that the present invention really can provide, and greatly improves its whole use value.
In sum; the control circuit that the long timeliness of the battery of special construction of the present invention is preserved; can make untapped battery cut-out and protective circuit or current supply circuit online fully, can guarantee that so battery can grow timeliness ground and preserve, and the reason time not caused the battery damage after for a long time.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and the battery that uses has the multinomial effect of enhancement in the more existing electronic product, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is a state environment schematic diagram of the present invention.
Fig. 2 is the circuit block diagram of control circuit of the present invention.
Fig. 3 is the embodiment circuit diagram of control circuit of the present invention.
Fig. 4 is the embodiment circuit diagram that the present invention connects external power.
10: blue-tooth earphone 11: processor
12: battery 13: current supply circuit
20: protective circuit 21: external power
211: connecting interface 22: control IC
30: control circuit 31: switch element
32: latch lock unit 321: the logic reversal device
33: control unit 34: trigger element
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, its embodiment of control circuit, structure, feature and effect thereof that the long timeliness of battery that foundation the present invention is proposed is preserved, describe in detail as after.
At first the present invention is to be that embodiment is illustrated with the blue-tooth earphone.Seeing also shown in Figure 1ly, is the charged state environment schematic diagram of blue-tooth earphone.The control circuit that the long timeliness of battery of the present invention is preserved mainly is to be installed in the small-sized electronic product such as a blue-tooth earphone 10, is provided with a processor 11 in this blue-tooth earphone 10, in order to control the primary clustering of these blue-tooth earphone 10 normal operations.Be provided with a battery 12 in this blue-tooth earphone 10, preferable is the rechargeable battery of a low capacity, can be a lithium polymer battery or a ni-mh polymer battery, this battery 12 provides the required electric power of this blue-tooth earphone 10, and this blue-tooth earphone 10 also is the current supply circuit (charge circuit) 13 of this battery 12, and the battery 12 in this blue-tooth earphone 10 is that i.e. installing is finished before dispatching from the factory, and the user can not pull down it.
Before this battery 12, be connected with a protective circuit 20; and this blue-tooth earphone 10 can be positioned on the charger; charge to connect 21 pairs of these batteries 12 of an external power; and the electronics spare part (as shown in Figure 3) that is provided with a charging current control IC 22 in this protective circuit 20 and is correlated with; the charging current of 21 pairs of these batteries 12 of this external power of may command is charged to protect this battery 12.
30 of control circuits of the present invention are connected between this battery 12 and this protective circuit 20; in order to the conducting of switching 12 pairs of these protective circuits 20 of this battery or open circuit; or to the conducting of these blue-tooth earphone 10 current supply circuits 13 or open circuit; when control circuit of the present invention 30 cuts off being connected between these batteries 12 and this protective circuit 20 or the current supply circuit 13; this rechargeable battery 10 can't be in this protective circuit 20 or current supply circuit 13 consumes power (its power consumption only 1 μ A can be ignored); have when this battery 12 is not used for a long time, still can keep the effect of its electric weight.
And if control circuit of the present invention 30 is when wanting 12 pairs of protective circuits 20 of this battery of conducting or current supply circuit 13 online; when the condition of its conducting must input to this control circuit 30 by these external power 21 connections, can trigger the online of 12 pairs of protection electricity 20 of this this battery of control circuit 30 conductings or current supply circuit 13.
Yet, when present embodiment is applied to actual conditions, the manufacturer of blue-tooth earphone 10 can be when manufacturing be finished, earlier this control circuit 30 is cut off the online of this battery 12, be unlikely to be consumed to keep its inner electric weight, when the user uses this blue-tooth earphone 10 for the first time by the time, or do not use for a long time and when using once again, this blue-tooth earphone 10 is charged, and what this control circuit 30 can this battery 12 of conducting is online, guarantees low battery 12 electric weight abundance still under long-term untapped situation by this.
Seeing also shown in Figure 2ly, be the circuit block diagram of control circuit of the present invention, and Fig. 3 is the embodiment circuit diagram of this control circuit.Control circuit 30 of the present invention; include a switch element 31, a latch lock unit 32, a control unit 33 and a trigger element 34; wherein; this switch element 31 is can cut off or being connected of this battery 12 of conducting and 20 of this protective circuits; the preferable metal oxide field-effect transistor (MOSFET) that can be is provided with two switch terminals (S, D) and a control end (G).
This latch lock unit 32 wherein, be in order to the conducting between two switch terminals (S, D) of controlling this switch element 31 or open circuit, this latch lock unit 32 is preferable can form a flip-flop by two logic reversal devices 321 and formed, be provided with an input and an output, this output is connected in the control end (G) of this switch element 31.
This control unit 33 wherein, it is the input that is connected in 32 yuan of this breech lock lists, be sent to this latch lock unit 32 in order to produce one first trigger signals, controlling this switch element 31 opens circuit, form the long timeliness preservation state of battery 12, and this control unit 33 is the control that can accept this processor 11 in this blue-tooth earphone 10, carry out the control program that has the long timeliness of a battery to preserve in this processor 11, when need did not use this blue-tooth earphone 10 for a long time, promptly this control unit 33 of may command was exported these first trigger signals.
This trigger element 34 wherein; the input and this latch lock unit 32 that connect this external power 21; preferably the input of this external power 21 can be the electric contact or the electric connection of this external power 21 of connection; when the input of this external power 21 has electric power input; this trigger element 34 sends one second trigger signals and is sent to this latch lock unit 32; control being connected between this this battery 12 of switch element 31 conductings and this protective circuit 20; in other words; when the user uses for the first time; or when using once again after not using for a long time; an as long as grafting charger; after this external power to be provided; can send this second trigger signals, control being connected between these switch element 31 turn-on batteries 12 and the protective circuit 20.
In the embodiment of blue-tooth earphone 10 of the present invention; can be provided with a key switch controlling as blue-tooth earphone 10; as when connecing electricity; the user can utilize and push this key switch above 2 minutes; set this processor 11 and send a signal to this control circuit 30; make this control unit 33 outputs one first trigger signals to this latch lock unit 32, this opens i.e. 32 controls of this latch lock unit unit 31 and cuts off being connected of these batteries 12 and this protective circuit 20 or current supply circuit.Even this measure can make this rechargeable battery 12 under long-time untapped situation, be unlikely to protected circuit 20 or current supply circuit totally with electric quantity consumption.
Please consult shown in Figure 4 again, it is the embodiment circuit diagram that the present invention connects external power, present embodiment is by being provided with a connecting interface 211 between this trigger element 34 and this external power 21, therefore when external power 21 electrically connects, the end (Reset) of reseting of trigger element 34 obtains higher signal reference position, triggers 31 conductings of latch lock unit 32 control switch unit to send this second trigger signals.In other words, after this battery 12 opened circuit for a long time, the user also can an external external power 21, the normal function of use of opening this battery 12 by this.
In sum, the control circuit that the long timeliness of battery of the present invention is preserved can make the electric weight of battery 12 be unlikely long-term use under and be consumed to below the lowest capacity that can recharge, and can guarantee that with easy logical circuit these battery 12 functions are normal, overcome the disappearance of existing known circuit, so above-mentioned disclosed technology of the present invention's true energy mat, provide a kind of far different, may be able to improve whole use value in the structural design of existing known product.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100069130A CN1661879A (en) | 2004-02-26 | 2004-02-26 | Control circuit for long-term storage of batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100069130A CN1661879A (en) | 2004-02-26 | 2004-02-26 | Control circuit for long-term storage of batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1661879A true CN1661879A (en) | 2005-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004100069130A Pending CN1661879A (en) | 2004-02-26 | 2004-02-26 | Control circuit for long-term storage of batteries |
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| Country | Link |
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| CN (1) | CN1661879A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539018A (en) * | 2014-12-26 | 2015-04-22 | 英华达（上海）科技有限公司 | Electronic device and power saving method |
| CN107887937A (en) * | 2016-09-30 | 2018-04-06 | 环旭电子股份有限公司 | Circuit and method for intelligently controlling power-off |
-
2004
- 2004-02-26 CN CN2004100069130A patent/CN1661879A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539018A (en) * | 2014-12-26 | 2015-04-22 | 英华达（上海）科技有限公司 | Electronic device and power saving method |
| CN107887937A (en) * | 2016-09-30 | 2018-04-06 | 环旭电子股份有限公司 | Circuit and method for intelligently controlling power-off |
| CN107887937B (en) * | 2016-09-30 | 2021-03-09 | 环旭电子股份有限公司 | Intelligent circuit and method for controlling power failure |
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Owner name: HEWLETT-PACKARD CO. Free format text: FORMER OWNER: HONGDING COMMUNICATION CO., LTD. Effective date: 20060317 |
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Effective date of registration: 20060317 Address after: Taiwan, China Applicant after: Merry Electronics Co., Ltd. Address before: Taiwan, China Applicant before: Hongding Communication Co., Ltd. |
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