CN203645351U - Charging circuit and charger comprising the charging circuit - Google Patents
Charging circuit and charger comprising the charging circuit Download PDFInfo
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- CN203645351U CN203645351U CN201320542162.9U CN201320542162U CN203645351U CN 203645351 U CN203645351 U CN 203645351U CN 201320542162 U CN201320542162 U CN 201320542162U CN 203645351 U CN203645351 U CN 203645351U
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Abstract
The utility model discloses a charging circuit comprising a power module for charging a charged battery; a controlling module for controlling the power module to perform a first stage charging on the charged battery based on constant current parameters configured in advance, and for controlling the power module to perform a second stage charging on the charged battery based on constant voltage parameters configured in advance after the voltage charged in the first stage charging is compared with the voltage configured in advance; an overvoltage protection module, for cutting a charging loop between the power module and the charged battery when charging time of the second stage charging reaches the charging time configured in advance. According to the utility model, the charging loop between the power module and the charged battery is cut off by the overvoltage protection module when the charged battery has been charged for a predetermined charging time length, thereby avoiding damage of the charged battery due to overcharge, and improving usability and service life of the charged battery.
Description
Technical field
The utility model relates to battery boosting technology field, specifically, relates to a kind of charging circuit and the charger with this charging circuit.
Background technology
Along with the increasing of country to environmental requirement dynamics, lithium-ion-power cell replaces lead-acid power accumulator to become a kind of inexorable trend in Moped Scooter industry.But lithium-ion-power cell is in the time that reality is used, also there is many weak points, for example, in the time that lithium-ion-power cell is charged, if charging voltage is too high, just be easy to damage battery, even also can cause burning or the blast of battery, and in the time charging, if charging current is excessive, can make the electro-chemical reaction of inside battery strengthen, the loss of battery-heating produce power, reduces battery.
Therefore; become at lithium-ion-power cell under a kind of prospect of inexorable trend; need a kind of precision and safe charging circuit to protect lithium-ion-power cell; need the charging modes of science to guarantee to charge safely and efficiently; but existing lithium-ion-power cell charger in the market, although can play simple charging effect; but all do not possess the defencive function to lithium-ion-power cell, cannot effectively improve the useful life of lithium-ion-power cell.
Do not possess the defencive function to lithium-ion-power cell for the existing lithium-ion-power cell charger in correlation technique, cannot effectively improve the problem in useful life of lithium-ion-power cell, not yet propose at present effective solution.
Utility model content
Do not possess the defencive function to lithium-ion-power cell for the existing lithium-ion-power cell charger in correlation technique; cannot effectively improve the problem in useful life of lithium-ion-power cell; the utility model proposes a kind of charging circuit and the charger with this charging circuit; can guarantee by the safe charging of rechargeable battery; the damage being caused in the time charging by rechargeable battery, improved greatly by the serviceability of rechargeable battery and useful life.
The technical solution of the utility model is achieved in that
According to an aspect of the present utility model, provide a kind of charging circuit.
This charging circuit comprises:
Power module, for to being charged by rechargeable battery;
Control module, for controlling power module according to pre-configured constant current parameter, to being carried out the charging of first stage property by rechargeable battery, and for after the voltage of first stage property charging and pre-configured voltage are compared, control power module according to pre-configured constant voltage parameter, to being carried out second stage charging by rechargeable battery;
Overvoltage protective module, when reach pre-configured charging interval in the charging interval of second stage charging, the module of cutting off the electricity supply and by the charge circuit between rechargeable battery.
In addition, this charging circuit also comprises voltage acquisition module, and for to carried out first stage property when charging by rechargeable battery, Real-time Collection is by the voltage of rechargeable battery, and sends the magnitude of voltage that this voltage is corresponding; And, control module is also for receiving the first stage property magnitude of voltage in when charging, and this magnitude of voltage and pre-configured limiting voltage value are compared, be consistent or the error of magnitude of voltage when comparative result is the charging of first stage property and limiting voltage value within the scope of predictive error in the situation that at comparative result, control power module according to pre-configured constant voltage parameter, to being carried out second stage charging by rechargeable battery.
Wherein, control module also at comparative result be the magnitude of voltage in first stage property when charging higher than pre-configured limiting voltage value, control cut off the electricity supply module and by the charge circuit between rechargeable battery of overvoltage protective module.
Wherein, pre-configured limiting voltage value is according to being configured by the termination charging voltage value of rechargeable battery.
Wherein, voltage acquisition module, also for before being carried out the charging of first stage property by rechargeable battery, gathers by the voltage of rechargeable battery, and sends the magnitude of voltage that this voltage is corresponding; And, control module is also for receiving first stage property charging magnitude of voltage before, and this magnitude of voltage and pre-configured overdischarge magnitude of voltage are compared, magnitude of voltage before comparative result is the charging of first stage property, lower than overdischarge magnitude of voltage, is judged by rechargeable battery in over-discharge state.
Wherein, control module is also for during in over-discharge state, being controlled power module according to pre-configured pre-charge current parameter, to being carried out precharge by rechargeable battery by rechargeable battery; And control module also when reach pre-configured precharge time in the charging interval of precharge, is controlled power module according to constant current parameter, to being carried out the charging of first stage property by rechargeable battery.
In addition, this charging circuit also comprises temperature collect module and high temperature protection module, wherein, temperature collect module, for Real-time Collection by the temperature of rechargeable battery, and send this temperature corresponding by the temperature value of rechargeable battery; And; control module is also for receiving by the temperature value of rechargeable battery; and will be compared by the temperature value of rechargeable battery and pre-configured temperature value; in the case of comparative result be by the temperature value of rechargeable battery higher than pre-configured temperature value, control cut off the electricity supply module and by the charge circuit between rechargeable battery of high temperature protection module.
In addition, this charging circuit also comprises current acquisition module, for Real-time Collection by the charging current of rechargeable battery, and send this charging current corresponding by the charging current value of rechargeable battery; And, control module is also for receiving by the charging current value of rechargeable battery, and will be compared by the charging current value of rechargeable battery and pre-configured charging current value, in the case of comparative result be by the charging current value of rechargeable battery higher than pre-configured charging current value, control power module and reduce by the charging current of rechargeable battery.
Wherein, be lithium-ion-power cell by rechargeable battery.
According on the other hand of the present utility model, a kind of charger is provided, this charger comprises above-mentioned charging circuit.
The utility model by overvoltage protective module in the time being reached the predetermined charging interval by rechargeable battery; deenergization module and by the charge circuit between rechargeable battery; thereby realize by the overvoltage protection of rechargeable battery; avoid by rechargeable battery, because the impaired situation that overcharges occurs, having improved greatly by the serviceability of rechargeable battery and useful life.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the structural representation of the charging circuit of the utility model embodiment;
Fig. 2 realizes block diagram according to the four-part form charging of the utility model embodiment;
Fig. 3 is according to the principle schematic of the four-part form charging of the utility model embodiment;
Fig. 4 is according to the principle schematic of the elementary high temperature protection of the utility model embodiment;
Fig. 5 is according to the dual overvoltage protection of the utility model embodiment and the principle schematic of high temperature protection.Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills obtain, belongs to the scope that the utility model is protected.
According to embodiment of the present utility model, provide a kind of charging circuit.
As shown in Figure 1, comprise according to the charging circuit of the utility model embodiment:
Overvoltage protective module 13, when reach pre-configured charging interval in the charging interval of second stage charging, the module of cutting off the electricity supply and by the charge circuit between rechargeable battery.
In addition, this charging circuit also comprises voltage acquisition module (not shown), and for to carried out first stage property when charging by rechargeable battery, Real-time Collection is by the voltage of rechargeable battery, and sends the magnitude of voltage that this voltage is corresponding; And, control module 12 is also for receiving the first stage property magnitude of voltage in when charging, and this magnitude of voltage and pre-configured limiting voltage value are compared, be consistent or the error of magnitude of voltage when comparative result is the charging of first stage property and limiting voltage value within the scope of predictive error in the situation that at comparative result, control power module 11 according to pre-configured constant voltage parameter, to being carried out second stage charging by rechargeable battery.
Wherein, control module 12 also at comparative result be the magnitude of voltage in first stage property when charging higher than pre-configured limiting voltage value, control cut off the electricity supply module 11 and by the charge circuit between rechargeable battery of overvoltage protective module.
Wherein, pre-configured limiting voltage value is according to being configured by the termination charging voltage value of rechargeable battery.
Wherein, voltage acquisition module, also for before being carried out the charging of first stage property by rechargeable battery, gathers by the voltage of rechargeable battery, and sends the magnitude of voltage that this voltage is corresponding; And, control module 12 is also for receiving first stage property charging magnitude of voltage before, and this magnitude of voltage and pre-configured overdischarge magnitude of voltage are compared, magnitude of voltage before comparative result is the charging of first stage property, lower than overdischarge magnitude of voltage, is judged by rechargeable battery in over-discharge state.
Wherein, control module 12 is also for during in over-discharge state, being controlled power module 11 according to pre-configured pre-charge current parameter, to being carried out precharge by rechargeable battery by rechargeable battery; And control module 12 also when reach pre-configured precharge time in the charging interval of precharge, is controlled power module 11 according to constant current parameter, to being carried out the charging of first stage property by rechargeable battery.
In addition, this charging circuit also comprises temperature collect module (not shown) and high temperature protection module (not shown), wherein, temperature collect module, for Real-time Collection by the temperature of rechargeable battery, and send this temperature corresponding by the temperature value of rechargeable battery; And; control module 12 is also for receiving by the temperature value of rechargeable battery; and will be compared by the temperature value of rechargeable battery and pre-configured temperature value; in the case of comparative result be by the temperature value of rechargeable battery higher than pre-configured temperature value, control cut off the electricity supply module and by the charge circuit between rechargeable battery of high temperature protection module.
In addition, this charging circuit also comprises current acquisition module (not shown), for Real-time Collection by the charging current of rechargeable battery, and send this charging current corresponding by the charging current value of rechargeable battery; And, control module 12 is also for receiving by the charging current value of rechargeable battery, and will be compared by the charging current value of rechargeable battery and pre-configured charging current value, in the case of comparative result be by the charging current value of rechargeable battery higher than pre-configured charging current value, control power module 11 and reduce by the charging current of rechargeable battery.
Wherein, be lithium-ion-power cell by rechargeable battery.
In the utility model, the utility model is by dual overvoltage crowbar and high temperature circuit, the fail safe when improving the reliability of charging circuit (charger) and working.Its charge mode is that four-part form charging is turn-offed in little pre-charge electricity-large electric current constant current charge-constant voltage charge-timing.
Fig. 2 is that four-part form charging realizes block diagram; as can be seen from Figure 2; this charging modes realize circuit, mainly formed by following part: the constant current constant voltage Switching Power Supply of two closed feedback loop, for the high-temperature protection circuit of the overvoltage of the microprocessor (CPU) of control switch power work, power output end and reverse-connection protection circuit, power supply primary and secondary, for CPU provide charging with reference to the temperature of parameter voltage current sampling circuit, drive the power-supply management system of CPU work.Its operation principle is as follows:
This four-part form charging modes, in the time of charging, by the current feedback loop of CPU control switch power supply, while realizing charging beginning, adopts the little electric current of fixing duration to lithium-ion-power cell preliminary filling (preliminary filling duration can be adjusted by system, and pre-charge current size is adjustable).After fixing duration precharge, charger enters large electric current constant current charge section; In the time that charging voltage approaches the termination charging voltage of lithium ion battery, charger is transferred to the constant voltage charge of phase III by constant current charge, and now charging voltage keeps constant, and charging current declines gradually.In constant voltage charge section, in the time that charging current drops to set point (1.2A), CPU starts 100 minutes timers.Be timed to when 100 minutes, CPU controls overvoltage crowbar and cuts off charge circuit, turn-offs charging current.Thereby four-part form charge mode is turn-offed in the little pre-charge, constant current charge, constant voltage charge and the timing that have realized highly effective and safe.
In addition,, in charging process, CPU is the working temperature of real-time monitoring charging voltage, electric current and charging also.When charging voltage is during higher than the termination charging voltage of the given lithium ion battery of producer, overvoltage crowbar can cut off charge circuit automatically, and protection battery is injury-free.In the time that the working temperature of charging is greater than 80 ℃, the elementary high-temperature protection circuit control of Switching Power Supply charging current reduces, and internal temperature can not raise in continuation out of control.As temperature continues to raise, the secondary high-temperature protection circuit of switch power supply secondary CPU control switch power supply, cuts off charge circuit, and making charging current is zero, and protection is not damaged by rechargeable battery.In the time that the working temperature of charging returns to below 80 ℃, charger can automatically restore to normal charging condition.In whole charging process, CPU can also monitor charging current, guarantees that charging current is controlled in 0.2C controlled area charactert.
Can find out in sum, the utility model is mainly reflected in following three aspects: 1., lithium-ion-power cell for a long time do not use or use time overdischarge, must be with little pre-charge electricity before constant current large current charge, allow inside battery under deep discharge state and the passivating film reduction of dissolving.In addition when lithium-ion-power cell overdischarge, may discharge part copper metal and be attached to anode, easily cause short circuit, if now force charging can cause battery overheated with large electric current, reduce battery.In the utility model, can carry out preliminary filling with little electric current in advance, can effectively avoid the generation of this problem.2., high to charging circuit required precision, precise and stable to guarantee charging voltage.Lithium-ion-power cell when charging, the protection of battery is required very high, lithium-ion-power cell group inner self with baffle, to protect battery injury-free or the accident of combustion explosion occurs.Lithium ion battery producer has also formulated strict technical requirement to supporting with it charger.Particularly to the requirement of constant voltage charge voltage far above lead-acid battery charger, require the parameter error of formulating with producer to be less than 1%.As too high in charging voltage, easily damage battery, even also can cause burning or the blast of battery.So the utility model has adopted dual overvoltage crowbar, guarantee to there will not be overvoltage charging in charging process.3., for lithium-ion-power cell, charging current should remain in rational scope.Excessive electric current can make cell electrochemical reaction strengthen, and the loss of battery-heating produce power, reduces battery life.In the utility model, two closed loop Switching Power Supplies can guarantee that charging current can be constant within the scope of safe charging, utilize CPU to monitor in real time charging current simultaneously, as excessive in found electric current, and CPU can disconnect charge circuit in time, and protection battery and charger are injury-free.
By instantiation, technique scheme of the present utility model is elaborated below.
Fig. 3 is the principle schematic of four-part form charging, and as can be seen from Figure 3, charger powers on while starting to charge, and the MOSC pin output high level of CPU, makes Q7 conducting.The even U4B electric current ↑ → UC3842 of the even U4A electric current ↑ → light of fall ↓ → light of current feedback loop U5B end of oppisite phase reference voltage 2. pin voltage ↑ → UC3842 6. pin output pulse duty factor ↓ → output charging current reduces.With the little electric current of the large electric current 10% of constant current to battery pre-charging.After three minutes, the MOSC pin level of CPU becomes low level, and output current of charger is elevated to the constant current charge current value that circuit sets, and charger completes the little pre-charge Electricity Functional of fixing duration.Precharge duration can lean on system setting.After this charger enters constant current charge section, and along with charging voltage rises, when voltage feedback loop U5C in-phase end voltage is during higher than end of oppisite phase reference voltage, Voltage Feedback works, and charger enters constant voltage charge section.In constant voltage charge section, charging voltage is invariable, and charging current reduces gradually.Charger enters constant voltage charge section, and when charging current drops to 1.2A, CPU starts timing in 100 minutes.In the time within 100 minutes, being timed to, CPU 1. pin becomes high level by original low level, controllable silicon Q4 conducting, and switch MOS pipe Q5 grid voltage is pulled low to 0.4V, and Q5 cut-off disconnects charge circuit, turn-offs battery charge.Battery and charger disconnect.
Utilize such scheme, the utility model has been realized little pre-charge-constant current charge-constant voltage charge-timing and has been turn-offed four-part form charge mode.
Fig. 4 is the principle schematic of elementary high temperature protection; in Fig. 4; UC3842 is a kind of PWM control integration circuit chip of high-performance fixed frequency current-mode; utilization control UC3842 2. pin voltage height can realize 6. pin output driving pulse duty ratio size adjustment; thereby change output current size, adjust charger power output object to reach.As can be seen from Figure 4, in the time that charging working temperature raises, negative temperature coefficient thermo-sensitive resistor RT2 resistance diminishes, 8. export+5V reference voltage of pin, after RT2 and R57 dividing potential drop, causes D12 cathode voltage to raise, and UC3842 2. pin voltage raises, 6. pin output pulse duty factor reduces, charging current declines, and charger power output reduces, and the working temperature that makes to charge declines.This safeguard measure can effectively be controlled charging work temperature control, and protection can not damaged because of excess Temperature by rechargeable battery.
From the overall angle of dual overvoltage and high temperature protection, technique scheme of the present utility model is elaborated below.
Fig. 5 is the principle schematic of dual overvoltage protection and high temperature protection; As can be seen from Figure 5, the principle of dual overvoltage circuit protection is as follows,
The bleeder circuit of the first heavy overvoltage crowbar: R73, R74, R75, R76 composition to charger output voltage dividing potential drop after, be extremely connected with the control of controllable silicon Q4 through voltage stabilizing didoe D15.Under normal circumstances, voltage stabilizing didoe D15 cathode voltage is lower than its voltage stabilizing value, and Q4 controls pole tension lower than 0.4V like this, Q4 cut-off, and Q5 grid voltage is 10V, Q5 conducting, battery is communicated with charger.When output voltage is during higher than the final voltage of battery, after dividing potential drop make D15 cathode voltage higher than its voltage stabilizing value time, Q4 controls pole tension and is greater than 0.4V; Q4 conducting, Q5 grid voltage is down to 0.4V, Q5 cut-off; battery and charger disconnect, and have realized the overvoltage protection to battery.
The second heavy overvoltage crowbar: output voltage is delivered to 7. pin of CPU after R22, R23, R24, R25 dividing potential drop, and CPU completes the sampling analysis to this voltage, and CPU judges that by measuring this magnitude of voltage whether output voltage is higher than battery final voltage.When output voltage is during lower than battery final voltage, CPU 7. pin voltage is worth lower than protection, and CPU is pin output low level 1., does not affect the operating state of Q4.When output voltage is during higher than battery final voltage; CPU is when 7. pin voltage is raised to higher than protection value thereupon; power management software in CPU is judged when 7. pin voltage is worth higher than protection; can allow 1. pin output high level of CPU; Q4 conducting, Q5 grid voltage is pulled low to 0.4V, Q5 cut-off; battery and charger disconnect, and have realized the overvoltage protection to battery.
In addition, as can be seen from Figure 5, the enforcement principle of high temperature protection is: CPU 5. pin is temperature sampling, RT1 and R27 composition temperature sensing circuit.RT1 is negative temperature coefficient thermo-sensitive resistor, charger when work, when charging working temperature is during higher than 80 ℃ ,+5V voltage after RT1 and R27 dividing potential drop, deliver to CPU 5. the voltage of pin increase.Power-supply management system in CPU is judged when 5. pin voltage is greater than 4.2V, can allow 1. pin output high level of CPU, Q4 conducting, Q5 grid voltage is pulled low to 0.4V, Q5 cut-off, battery and charger disconnect, and charging current is zero, charger power output is also down to zero thereupon, has avoided too high temperature to cause by the damage of rechargeable battery.
Charger power output be down to zero and quit work after, charging working temperature also can decline thereupon, the CPU 5. voltage of pin also can decline, when CPU is when 5. the voltage of pin is down to 4V, power-supply management system in CPU can allow CPU 1. pin voltage revert to low level, controllable silicon Q4 becomes cut-off from previous conducting state, Q5 is conducting thereupon, charger recovery is connected with battery, recovers to charge normal.
In addition, from Fig. 5, it can also be seen that, the principle of controlling electric current is: CPU 4. pin is current sample, and whether power-supply management system is monitored in real time charging current and remained in prescribed limit.If charger circuit occurs abnormal, charging current is greater than setting, and CPU is pin output high level 1., causes charge circuit to disconnect (principle and overvoltage, high temperature protection are in like manner), and battery and charger disconnect, to protect battery not to be damaged.
According to embodiment of the present utility model, a kind of charger is also provided, this charger comprises above-mentioned charging circuit.
In sum; by means of technique scheme of the present utility model; by overvoltage protective module in the time being reached the predetermined charging interval by rechargeable battery; deenergization module and by the charge circuit between rechargeable battery; thereby realize by the overvoltage protection of rechargeable battery; avoid by rechargeable battery, because the impaired situation that overcharges occurs, having improved greatly by the serviceability of rechargeable battery and useful life.
In addition; the utility model also passes through voltage acquisition module Real-time Collection by the voltage of rechargeable battery; and logical overvoltage protective module by the voltage of rechargeable battery when by the termination charging voltage of rechargeable battery; charge circuit between deenergization module and rechargeable battery; from and further protected by rechargeable battery; avoid being caused impaired situation to occur by rechargeable battery because charging voltage exceedes by the termination charging voltage of rechargeable battery, further improved by the serviceability of rechargeable battery and useful life.
In addition; the utility model also gathers in charging process by the temperature of rechargeable battery by temperature collect module; and by high temperature protection module at the temperature value gathering during higher than pre-configured temperature value; the module of cutting off the electricity supply and by the charge circuit between rechargeable battery; thereby prevent in charging process; for example, by rechargeable battery Yin Gaowen and the situation of damaged (, burning or blast) occurs, improve greatly the fail safe in charging process by rechargeable battery.
In addition, the utility model also gathers in charging process by the charging current of rechargeable battery by current acquisition module, and by power module in the case of gather charging current value higher than pre-configured current value, reduce being exported by the electric current of rechargeable battery, thereby effectively controlled the charging current in charging process, avoided charging current excessive and damage by rechargeable battery.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a charging circuit, is characterized in that, comprising:
Power module, for to being charged by rechargeable battery;
Control module, for controlling described power module according to pre-configured constant current parameter, carried out the charging of first stage property to described by rechargeable battery, and for after the voltage of first stage property charging and pre-configured voltage are compared, control described power module according to pre-configured constant voltage parameter, carried out second stage charging to described by rechargeable battery;
Overvoltage protective module, when reach pre-configured charging interval in the charging interval of described second stage charging, cuts off described power module and described by the charge circuit between rechargeable battery.
2. charging circuit according to claim 1, is characterized in that, further comprises:
Voltage acquisition module, for being carried out first stage property when charging to described by rechargeable battery, by the voltage of rechargeable battery, and sends the magnitude of voltage that this voltage is corresponding described in Real-time Collection;
And described control module is the magnitude of voltage when receiving the charging of described first stage property also, and this magnitude of voltage and pre-configured limiting voltage value are compared; Be consistent or the error of magnitude of voltage when comparative result is described first stage property charging and described limiting voltage value within the scope of predictive error in the situation that at comparative result, control described power module according to pre-configured described constant voltage parameter, carried out second stage charging to described by rechargeable battery.
3. charging circuit according to claim 2; it is characterized in that; the described control module also magnitude of voltage when at described comparative result being the charging of described first stage property, higher than described pre-configured limiting voltage value, is controlled described overvoltage protective module and is cut off described power module and described by the charge circuit between rechargeable battery.
4. according to the charging circuit described in claim 2 or 3, it is characterized in that, described pre-configured limiting voltage value is configured according to the described termination charging voltage value by rechargeable battery.
5. charging circuit according to claim 1, is characterized in that, described voltage acquisition module also for described carried out the charging of first stage property by rechargeable battery before, gather describedly by the voltage of rechargeable battery, and send the magnitude of voltage that this voltage is corresponding;
And, described control module is also for receiving described first stage property charging magnitude of voltage before, and this magnitude of voltage and pre-configured overdischarge magnitude of voltage are compared, magnitude of voltage before comparative result is first stage property charging is lower than described overdischarge magnitude of voltage, judge described by rechargeable battery in over-discharge state.
6. charging circuit according to claim 5, it is characterized in that, described control module also, for during in over-discharge state, being controlled described power module according to pre-configured pre-charge current parameter by rechargeable battery described, is carried out precharge to described by rechargeable battery;
And described control module also when reach pre-configured precharge time in the charging interval of described precharge, is controlled described power module according to described constant current parameter, is carried out the charging of first stage property to described by rechargeable battery.
7. charging circuit according to claim 1, is characterized in that, further comprises:
Temperature collect module, for described in Real-time Collection by the temperature of rechargeable battery, and send corresponding described by the temperature value of rechargeable battery of this temperature;
High temperature protection module,
And; described control module is also described by the temperature value of rechargeable battery for receiving; and compared by the temperature value of rechargeable battery and pre-configured temperature value described; in the case of comparative result be described by the temperature value of rechargeable battery higher than described pre-configured temperature value, control described high temperature protection module and cut off described power module and described by the charge circuit between rechargeable battery.
8. charging circuit according to claim 1, is characterized in that, further comprises:
Current acquisition module, for described in Real-time Collection by the charging current of rechargeable battery, and send corresponding described by the charging current value of rechargeable battery of this charging current;
And, described control module is also described by the charging current value of rechargeable battery for receiving, and compared by the charging current value of rechargeable battery and pre-configured charging current value described, in the case of comparative result be described by the charging current value of rechargeable battery higher than described pre-configured charging current value, control described power module and reduce described by the charging current of rechargeable battery.
9. charging circuit according to claim 1, is characterized in that, described is lithium-ion-power cell by rechargeable battery.
10. a charger, is characterized in that, comprises the charging circuit described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542162.9U CN203645351U (en) | 2013-09-02 | 2013-09-02 | Charging circuit and charger comprising the charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542162.9U CN203645351U (en) | 2013-09-02 | 2013-09-02 | Charging circuit and charger comprising the charging circuit |
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| CN203645351U true CN203645351U (en) | 2014-06-11 |
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| CN201320542162.9U Expired - Fee Related CN203645351U (en) | 2013-09-02 | 2013-09-02 | Charging circuit and charger comprising the charging circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475051A (en) * | 2013-09-02 | 2013-12-25 | 四川川奇机电有限责任公司 | Charging circuit, charger with same, and charging method |
| CN110140273A (en) * | 2017-02-22 | 2019-08-16 | 株式会社村田制作所 | DC power-supply system |
| CN110829537A (en) * | 2019-11-21 | 2020-02-21 | 四川长虹电源有限责任公司 | Charging management system for aviation lithium battery pack |
| CN113872300A (en) * | 2021-10-20 | 2021-12-31 | 东莞新能德科技有限公司 | Battery management system, terminal equipment and battery charging and discharging method thereof |
-
2013
- 2013-09-02 CN CN201320542162.9U patent/CN203645351U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475051A (en) * | 2013-09-02 | 2013-12-25 | 四川川奇机电有限责任公司 | Charging circuit, charger with same, and charging method |
| CN110140273A (en) * | 2017-02-22 | 2019-08-16 | 株式会社村田制作所 | DC power-supply system |
| CN110829537A (en) * | 2019-11-21 | 2020-02-21 | 四川长虹电源有限责任公司 | Charging management system for aviation lithium battery pack |
| CN113872300A (en) * | 2021-10-20 | 2021-12-31 | 东莞新能德科技有限公司 | Battery management system, terminal equipment and battery charging and discharging method thereof |
| CN113872300B (en) * | 2021-10-20 | 2024-03-26 | 东莞新能德科技有限公司 | Battery management system, terminal equipment and battery charging and discharging method thereof |
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