CN104767243A - Charging method, charging device, charging circuit and charging system with charging circuit - Google Patents
Charging method, charging device, charging circuit and charging system with charging circuit Download PDFInfo
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- CN104767243A CN104767243A CN201510158551.5A CN201510158551A CN104767243A CN 104767243 A CN104767243 A CN 104767243A CN 201510158551 A CN201510158551 A CN 201510158551A CN 104767243 A CN104767243 A CN 104767243A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a charging method, a charging device, a charging circuit and a charging system with the charging circuit. The charging circuit comprises at least one high-capacity rechargeable battery pack, at least one low-capacity rechargeable battery pack, a detection circuit, a switching circuit, an overvoltage and overcurrent protection circuit, a charging management circuit and a booster circuit, wherein the high-capacity rechargeable battery pack provides electric energy for a large load; the low-capacity rechargeable battery pack provides electric energy for a small load; the detection circuit is used for detecting a USB insertion signal, a voltage value signal of the high-capacity rechargeable battery pack and a voltage value signal of the low-capacity rechargeable battery pack and generating a control signal according to a detection result; the switching circuit controls the low-capacity rechargeable battery pack to be charged with a USB according to the control signal generated by the detection circuit or charges the high-capacity rechargeable battery pack after voltage of the high-capacity rechargeable battery pack is increased to a preset voltage value; the overvoltage and overcurrent protection circuit carries out overvoltage and overcurrent protection on a charging loop of the high-capacity rechargeable battery pack and the low-capacity rechargeable battery pack; the charging management circuit conducts charging management on the high-capacity rechargeable battery pack and the low-capacity rechargeable battery pack; the booster circuit charges the low-capacity rechargeable battery pack after increasing the voltage of the high-capacity rechargeable battery pack to the preset voltage value according to the control signal generated by the detection circuit.
Description
Technical field
The present invention relates to battery boosting technology field, particularly a kind of charging method and device and charging circuit and there is the charging system of this circuit.
Background technology
Along with the development of science and technology, intelligent and portable electronic product is constantly weeded out the old and bring forth the new.Such as: panel computer, smart mobile phone, portable power source etc.Logical the producing of the supplying cell of existing intelligent and portable electronic product adopts lithium battery power supply, can by USB interface and AC adapter interface to lithium cell charging.
In actual applications, the driving force of the power supply interface of various different input power is different, widely different.Such as: be all 5V AC adapter, in order to satisfied different cost requirement, driving force can from 200mA to 3A more than; And the driving force of usb interface connector also has the plurality of specifications such as 300mA and 500mA.In order to satisfied different complicated application requirement, the charging system of battery must the interface of the various input interface of Intelligent Matching and different driving ability.Meanwhile, along with the continuous increase of the performance of intelligent and portable electronic product, power consumption constantly increases.In order to ensure the flying power of intelligent and portable electronic product, battery capacity constantly increases, and the corresponding charging interval also just increases.In order to improve the Consumer's Experience of intelligent and portable electronic product, charging system is configured with quick-charge function.But, in the process of charge-discharge system design, inventor finds charging system in prior art, usual employing monocell group charging mode, like this monocell group be simultaneously one compared with heavy load and a less load supplying time, the fluctuation of larger load greatly easily has influence on the normal work of less load, and the cruising time of whole system is limited.
Summary of the invention
In view of the above problems, proposing the present invention to provide a kind of overcomes the problems referred to above or solves the problem at least in part, and technical scheme of the present invention is achieved in that
On the one hand, the invention provides a kind of charging circuit, comprising:
Testing circuit, at least one group of Large Copacity rechargeable battery set and at least one group of low capacity rechargeable battery set, switching circuit, over-voltage over-current protection circuit, charge management circuit, booster circuit;
Described at least one group of Large Copacity rechargeable battery set, for providing electric energy for heavy load;
Described at least one group of low capacity rechargeable battery set, for providing electric energy for little load; Described testing circuit, is used for detecting the voltage value signal that USB inserts signal and described size energy density rechargeable battery group, and generates control signal according to testing result;
Described switching circuit, is used for controlling described at least one group of low capacity rechargeable battery set according to the control signal that described testing circuit generates and is charged by USB, or after being raised to preset voltage value by described Large Copacity rechargeable battery set, is its charging;
Described over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set and described low capacity rechargeable battery set charge circuit;
Described charge management circuit, for carrying out Charge Management to described size energy density rechargeable battery group;
Described booster circuit, for the control signal generated according to described testing circuit, charges to described low capacity rechargeable battery set after the voltage of described Large Copacity rechargeable battery set being raised to preset voltage value.
Preferably, described over-voltage over-current protection circuit comprises: Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit;
Described Large Copacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set charge circuit;
Described low capacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described low capacity rechargeable battery set charge circuit.
Preferably, described charge management circuit comprises: Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit;
Described Large Copacity rechargeable battery set charge management circuit, for managing described Large Copacity rechargeable battery set;
Described low capacity rechargeable battery set charge management circuit, for managing described low capacity rechargeable battery set.
On the other hand, the invention provides a kind of charging system, comprising: the charging circuit of any one as mentioned above.
Again on the one hand, the invention provides a kind of charging method, the method comprises:
Obtain USB and insert signal;
Signal is inserted according to described USB, charging index signal is sent at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, start charging.
Preferably, the method also comprises:
Under the charge circuit of described rechargeable battery is in non-charged state, obtain the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judge that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
When the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
On the other hand, the invention provides a kind of charging device, this charging device comprises:
Signal acquiring unit, inserts signal for obtaining USB;
Signal transmitting unit, for inserting signal according to described USB, sending charging index signal at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described rechargeable battery, starting charging.
Preferably, this device also comprises: magnitude of voltage acquiring unit, under being in non-charged state when the charge circuit of described rechargeable battery, obtain the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judging unit, for judging that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
Described signal transmitting unit, also for working as the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
Technical scheme of the present invention is by being divided into rechargeable battery set low capacity rechargeable battery set and Large Copacity rechargeable battery set to carry out respectively charging and being less load supplying by low capacity rechargeable battery set respectively, be that the mode of powering compared with heavy load will be separated power supply compared with heavy load with less load by Large Copacity rechargeable battery set, thus make to adopt the system of technical solution of the present invention not only can extend cruising time, improve Consumer's Experience, can also reduce compared with disturbing mutually between heavy load and less load.
Accompanying drawing explanation
A kind of charging circuit configuration schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The another kind of charging circuit configuration schematic diagram that Fig. 2 provides for the embodiment of the present invention;
A kind of charging circuit figure that Fig. 3 provides for the embodiment of the present invention;
A kind of charging method flow chart that Fig. 4 provides for the embodiment of the present invention;
A kind of charging device structural representation that Fig. 5 provides for the embodiment of the present invention;
A kind of charging system structural representation that Fig. 6 provides for the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As a kind of charging circuit that Fig. 1 provides for being depicted as the embodiment of the present invention; This circuit comprises:
Testing circuit, at least one group of Large Copacity rechargeable battery set and at least one group of low capacity rechargeable battery set, switching circuit, over-voltage over-current protection circuit, charge management circuit, booster circuit;
Described at least one group of Large Copacity rechargeable battery set, for providing electric energy for heavy load;
Described at least one group of low capacity rechargeable battery set, for providing electric energy for little load; Described testing circuit, is used for detecting the voltage value signal that USB inserts signal and described size energy density rechargeable battery group, and generates control signal according to testing result;
Described switching circuit, is used for controlling described at least one group of low capacity rechargeable battery set according to the control signal that described testing circuit generates and is charged by USB, or after being raised to preset voltage value by described Large Copacity rechargeable battery set, is its charging;
Described over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set and described low capacity rechargeable battery set charge circuit;
Described charge management circuit, for carrying out Charge Management to described size energy density rechargeable battery group;
Described booster circuit, for the control signal generated according to described testing circuit, charges to described low capacity rechargeable battery set after the voltage of described Large Copacity rechargeable battery set being raised to preset voltage value.
It should be noted that, described over-voltage over-current protection circuit comprises as shown in Figure 2: Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit; Described Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit adopt OVP/OCP protect IC U2 respectively, OVP/OCP protect IC U5
Described Large Copacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set charge circuit;
Described low capacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described low capacity rechargeable battery set charge circuit.
Described charge management circuit comprises: Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit; Described Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit adopt charging management chip U3, charging management chip U4 respectively
Described Large Copacity rechargeable battery set charge management circuit, for managing described Large Copacity rechargeable battery set;
Described low capacity rechargeable battery set charge management circuit, for managing described low capacity rechargeable battery set.
BAT-1: the battery pack being low capacity, for smaller load LOAD1;
BAT-2: be jumbo battery pack, for larger load LOAD2;
OVP/OCP-1: be the over-voltage over-current protection chip in the charge circuit of battery pack BAT-1;
OVP/OCP-2: be the over-voltage over-current protection chip in the charge circuit of battery pack BAT-2;
U4: the charging management chip being the battery BAT-1 of low capacity;
U3: the charging management chip being jumbo battery BAT-2;
Testing circuit: be that USB inserts charging detection, be confirmed whether to use USB to charge;
Booster circuit adopts DCDC (Boost), the voltage of battery pack BAT-2 is raised to 5V and then charges to BAT-1;
Switching circuit: be used for control be use USB charging, or use battery pack BAT-2 boosting after voltage charging;
USB detection signal: the MCU being sent to system, apprizing system, whether USB inserts charging;
Switch controlling signal Switch_control_signal: be the control signal sent by the MCU of system, be used for control USB charge or with boost after voltage charge;
Detection signal ADC-1/ detection signal ADC-2: the battery voltage detection being BAT-1, BAT-2 respectively, is given to the ADC pin of system MCU by detection signal;
Charge Management signal Setting_Detect_signal_1/ with Setting_Detect_signal_2: be connected with MCU respectively, then configures the charging to two batteries respectively by MCU, and detects constantly the charging of two batteries;
When charging normal, after USB inserts, USB detection signal is sent to MCU, then gives two battery chargings by USB;
When in use, once detect that the battery electric quantity of BAT-1 is low to moderate predetermined threshold value very much, and the battery of battery pack BAT-2 is not less than predetermined threshold value, just by the voltage of MCU control BAT-2 after booster circuit DCDC-BOOST boosts, through switching circuit Swtich circuit, for BAT-1 charges.
Based on above embodiment, if described Large Copacity rechargeable battery set is one group, described low capacity rechargeable battery set is one group, as shown in Figure 3, is a kind of charging circuit that the embodiment of the present invention provides; This circuit comprises: testing circuit, Large Copacity rechargeable battery set BAT-2, low capacity rechargeable battery set BAT-1, switching circuit, over-voltage over-current protection circuit, charge management circuit, booster circuit;
Wherein, described over-voltage over-current protection circuit comprises: Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit; Described Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit adopt OVP/OCP protect IC U2 respectively, OVP/OCP protect IC U5;
Described charge management circuit comprises: Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit; Described Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit adopt charging management chip U3, charging management chip U4 respectively;
Described booster circuit adopts boost DC/DC (BOOST) chip U1;
Described switching circuit is by switching tube Q1, and Q2, Q5, Q6 and resistance R4 and resistance R5 form;
For the configuration of the resistance of the surrounding of the above OVP/OCP protect IC U5, the setting to the overvoltage of the charging of battery pack BAT-1 and the protection threshold value of overcurrent can be realized, and the monitoring to battery; Electric capacity C20 in circuit, resistance R19, resistance R18, according to the concrete type selecting of chip, and need to carry out selecting corresponding capacitance and resistance, parts selection around described OVP/OCP protect IC U2 is identical with the method for OVP/OCP protect IC U5, is also according to the setting to the overvoltage of the charging of battery pack BAT-2 and the threshold value of overcurrent protection;
Charging management chip U4 and charging management chip U3, by the configuration to peripheral devices, distinguishes management and control battery pack BAT-1 and BAT-2 charging.
Wherein, I2C_SCL_CHARGER_1 in accompanying drawing, I2C_SDA_CHARGER_1 and I2C_SCL_CHARGER_2, I2C_SDA_CHARGER_2 is the signal carrying out between MCU with charging IC communicating, STAT_1 and STAT_2 is that the state feedback of charging IC is to the signal of MCU, CE_1 and CE_2 is the enable control signal of charging IC, and/PG_1 and/PG_2 is the control signal on power supply ground, opens and Lou exports; By above signal transmission, realize the charge arrangement of MCU to two battery pack, and the real-time control of battery pack charging status;
TH1, TH2, be placed on thermistor near two battery pack respectively, carry out Real-time Collection to the temperature of two batteries, and the described temperature information collected is sent to MCU.
Device around boost DC/DC (BOOST) chip U1 is also according to the type selecting of chip and needs to come concrete selection.R2, R1 are used to the output voltage Vout arranging DCDC, Vout=Vref* [R2/ (R1+R2)];
R19, R3 are used for arranging current limliting preset value;
R15, R16; R11, R12, be used for configuring the value of electric current of charging and the value of charging quickly stream of charging IC respectively;
When charging normal, once USB inserts, USB_INPUT_DETECT samples USB and inserts signal, then described insertion signal is sent to MCU, then, MCU sends control signal and is given to USB_CHARGE_CONTROL, control triode Q6 conducting, then Q5 conducting, so the charge circuit conducting of battery pack BAT-1, can charge to battery pack BAT-1;
The charge circuit of battery pack BAT-2, as long as MCU detects that USB inserts, the charging management chip U3 with regard to pilot cell group BAT-2 starts to charge to battery BAT-2.
In non-charged state, and when can not charge with USB, if detect that the voltage of battery pack BAT-1 is lower than predetermined threshold value, and the voltage of battery pack BAT-2 is not less than predetermined threshold value, then sends control command by MCU and be given to BAT_2_CHARGE_CONTROL and DCDC_EN (being all high level), so U1 is enabled, triode Q2 conducting, Q1 is also switched on, so be given to the charge circuit of BAT-1 by BAT-2 after boosting, charges to BAT-1.
As shown in Figure 4, be a kind of charging method that the embodiment of the present invention provides; The method comprises:
401: obtain USB and insert signal;
402: insert signal according to described USB, charging index signal is sent at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, start charging.
It should be noted that, the method also comprises:
Under the charge circuit of described rechargeable battery is in non-charged state, obtain the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judge that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
When the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
As shown in Figure 5, be a kind of charging device that the embodiment of the present invention provides; This device comprises:
Signal acquiring unit 501, inserts signal for obtaining USB;
Signal transmitting unit 502, for inserting signal according to described USB, sending charging index signal at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described rechargeable battery, starting charging.
It should be noted that, this device also comprises:
Magnitude of voltage acquiring unit, under being in non-charged state when the charge circuit of described rechargeable battery, obtains the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judging unit, for judging that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
Described signal transmitting unit, also for working as the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
As shown in Figure 6, be a kind of charging system that the embodiment of the present invention provides, this charging system comprises: any one charging circuit as mentioned above.
Technical scheme of the present invention is by being divided into rechargeable battery set low capacity rechargeable battery set and Large Copacity rechargeable battery set to carry out respectively charging and being less load supplying by low capacity rechargeable battery set respectively, be that the mode of powering compared with heavy load will be separated power supply compared with heavy load with less load by Large Copacity rechargeable battery set, thus make to adopt the system of technical solution of the present invention not only can extend cruising time, improve Consumer's Experience, can also reduce compared with disturbing mutually between heavy load and less load.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a charging circuit, is characterized in that, comprising: testing circuit, at least one group of Large Copacity rechargeable battery set and at least one group of low capacity rechargeable battery set, switching circuit, over-voltage over-current protection circuit, charge management circuit, booster circuit;
Described at least one group of Large Copacity rechargeable battery set, for providing electric energy for heavy load;
Described at least one group of low capacity rechargeable battery set, for providing electric energy for little load; Described testing circuit, is used for detecting the voltage value signal that USB inserts signal and described size energy density rechargeable battery group, and generates control signal according to testing result;
Described switching circuit, is used for controlling described at least one group of low capacity rechargeable battery set according to the control signal that described testing circuit generates and is charged by USB, or after being raised to preset voltage value by described Large Copacity rechargeable battery set, is its charging;
Described over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set and described low capacity rechargeable battery set charge circuit;
Described charge management circuit, for carrying out Charge Management to described size energy density rechargeable battery group;
Described booster circuit, for the control signal generated according to described testing circuit, charges to described low capacity rechargeable battery set after the voltage of described Large Copacity rechargeable battery set being raised to preset voltage value.
2. charging circuit according to claim 1, is characterized in that, described over-voltage over-current protection circuit comprises: Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit;
Described Large Copacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described Large Copacity rechargeable battery set charge circuit;
Described low capacity rechargeable battery set over-voltage over-current protection circuit, for carrying out over-voltage over-current protection to described low capacity rechargeable battery set charge circuit;
Described Large Copacity rechargeable battery set over-voltage over-current protection circuit and low capacity rechargeable battery set over-voltage over-current protection circuit adopt OVP/OCP protect IC U2 respectively, OVP/OCP protect IC U5.
3. charging circuit according to claim 1 and 2, is characterized in that, described charge management circuit comprises: Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit;
Described Large Copacity rechargeable battery set charge management circuit, for managing described Large Copacity rechargeable battery set;
Described low capacity rechargeable battery set charge management circuit, for managing described low capacity rechargeable battery set;
Described Large Copacity rechargeable battery set charge management circuit and low capacity rechargeable battery set charge management circuit adopt charging management chip U3, charging management chip U4 respectively.
4. charging circuit according to claim 3, is characterized in that, described switching circuit comprises: switching tube Q1, switching tube Q2, switching tube Q5, switching tube Q6, resistance R4 and resistance R5;
Described switching tube Q2 pin E ground connection, described switching tube Q2 pin C connects described resistance R5 one end respectively, described switching tube Q1 pin one, described switching tube Q2 pin B meets the control signal pin BAT_2_CHARGE_CONTROL that described Large Copacity rechargeable battery set provides charge power supply;
Described switching tube Q1 pin two respectively with the described resistance R5 other end, described booster circuit be connected; Described switching tube Q1 pin 3 respectively with described switching tube Q5 pin 3, low capacity rechargeable battery set charge management circuit be connected;
Described switching tube Q5 pin two respectively with described low capacity rechargeable battery set over-voltage over-current protection circuit one end, described resistance R4 one end be connected; Described switching tube Q5 pin one respectively with the described resistance R4 other end, described switching tube Q6 pin C be connected;
Described switching tube Q6 pin E ground connection, described switching tube Q6 pin B meets control signal pin USB_CHARGE_CONTROL.
5. charging circuit according to claim 4, is characterized in that, described booster circuit adopts boost DC/DC chip U1.
6. a charging system, is characterized in that, comprising: the charging circuit as described in claim 1-5 any one.
7. a charging method, is characterized in that, comprising:
Obtain USB and insert signal;
Signal is inserted according to described USB, charging index signal is sent at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, start charging.
8. charging method according to claim 7, is characterized in that, the method also comprises:
Under the charge circuit of described rechargeable battery is in non-charged state, obtain the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judge that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
When the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
9. a charging device, is characterized in that, comprising:
Signal acquiring unit, inserts signal for obtaining USB;
Signal transmitting unit, for inserting signal according to described USB, sending charging index signal at least one group of low capacity rechargeable battery set and at least one group of Large Copacity rechargeable battery set, so that the charge circuit conducting of described rechargeable battery, starting charging.
10. charging device according to claim 9, is characterized in that, this device also comprises:
Magnitude of voltage acquiring unit, under being in non-charged state when the charge circuit of described rechargeable battery, obtains the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set, and the corresponding voltage value of described at least one group of low capacity rechargeable battery set;
Judging unit, for judging that whether the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set is higher than the first preset voltage value, whether the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value;
Described signal transmitting unit, also for working as the magnitude of voltage of described at least one group of Large Copacity rechargeable battery set higher than the first preset voltage value, the corresponding voltage value of described at least one group of low capacity rechargeable battery set is lower than the second preset voltage value, charging control signal is sent to described at least one group of Large Copacity rechargeable battery set, boosting enable signal is sent to booster circuit, to switching circuit transmit button control signal, described at least one group of Large Copacity rechargeable battery set voltage to be carried out boosting process, charge to described at least one group of low capacity rechargeable battery set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158551.5A CN104767243B (en) | 2015-04-03 | 2015-04-03 | A kind of charging method and device and charging circuit and the charging system with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158551.5A CN104767243B (en) | 2015-04-03 | 2015-04-03 | A kind of charging method and device and charging circuit and the charging system with the circuit |
Publications (2)
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| CN104767243B CN104767243B (en) | 2017-05-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105426332A (en) * | 2015-08-21 | 2016-03-23 | 无锡中感微电子股份有限公司 | Communication interface circuit, portable electronic device and electronic system |
| CN105548773A (en) * | 2016-01-26 | 2016-05-04 | 江苏才易电子科技有限公司 | Intelligent detector compatible with quick charger and testing method thereof |
| CN107579566A (en) * | 2017-09-15 | 2018-01-12 | 青岛海信移动通信技术股份有限公司 | Battery charger and charging method |
| CN109217425A (en) * | 2018-10-16 | 2019-01-15 | 深圳市联讯发科技有限公司 | A kind of charger circuit and its intelligent charge control method |
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| CN204615437U (en) * | 2015-04-03 | 2015-09-02 | 青岛歌尔声学科技有限公司 | A kind of charging device and charging circuit and there is the charging system of this circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105426332A (en) * | 2015-08-21 | 2016-03-23 | 无锡中感微电子股份有限公司 | Communication interface circuit, portable electronic device and electronic system |
| CN105426332B (en) * | 2015-08-21 | 2023-07-21 | 无锡中感微电子股份有限公司 | Communication interface circuit, portable electronic device and electronic system |
| CN105548773A (en) * | 2016-01-26 | 2016-05-04 | 江苏才易电子科技有限公司 | Intelligent detector compatible with quick charger and testing method thereof |
| CN107579566A (en) * | 2017-09-15 | 2018-01-12 | 青岛海信移动通信技术股份有限公司 | Battery charger and charging method |
| CN107579566B (en) * | 2017-09-15 | 2020-03-27 | 青岛海信移动通信技术股份有限公司 | Battery charging circuit and charging method |
| CN109217425A (en) * | 2018-10-16 | 2019-01-15 | 深圳市联讯发科技有限公司 | A kind of charger circuit and its intelligent charge control method |
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| Publication number | Publication date |
|---|---|
| CN104767243B (en) | 2017-05-31 |
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