WO2023019713A1 - 电池电源调节电路、调节方法、充电线及终端设备 - Google Patents
电池电源调节电路、调节方法、充电线及终端设备 Download PDFInfo
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- 238000007600 charging Methods 0.000 title claims abstract description 259
- 230000033228 biological regulation Effects 0.000 title claims abstract description 42
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- 238000007599 discharging Methods 0.000 claims abstract description 42
- 239000003990 capacitor Substances 0.000 claims description 182
- 238000010280 constant potential charging Methods 0.000 claims description 14
- 238000010277 constant-current charging Methods 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 abstract 3
- 208000028659 discharge Diseases 0.000 description 59
- 230000020169 heat generation Effects 0.000 description 27
- 238000010586 diagram Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
- H02J7/00716—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current in response to integrated charge or discharge current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
Definitions
- the present disclosure relates to the technical field of battery charging, and in particular to a battery power regulation circuit, a regulation method, a charging cable and a terminal device.
- a rechargeable battery is a rechargeable battery with a limited number of charging times and can be used with a charger. By charging the battery, the battery can be reused, which is beneficial to meet the needs of economy and environmental protection.
- the charging process of a battery is the reverse process of its discharging process, specifically, the process of converting electrical energy into chemical energy stored in the battery.
- single-cell batteries are mainly used for charging.
- the voltage is about 4.5V.
- the charging current exceeds 8A, the battery terminal circuit board will heat up very seriously.
- the battery connector also needs to be replaced with a battery connector with a lower impedance and a larger flow rate, resulting in an increase in hardware costs; at the same time, the wiring and heat dissipation in the battery terminal circuit board will also be more difficult.
- the charging power of the battery terminal of the usual single cell is about 36W, resulting in low charging efficiency.
- the technical problem to be solved in the present disclosure is to solve the problem of low charging efficiency caused by the charging of the existing single-cell battery.
- embodiments of the present disclosure provide a battery power regulating circuit, regulating method, charging line and terminal equipment capable of improving charging efficiency.
- the present disclosure provides a battery power regulation circuit, which is configured to charge a dual-cell battery.
- the circuit includes: a Buck step-down circuit module, a first charge pump circuit module, a second charge pump circuit module, and a battery charging and discharging Control module and system power supply module;
- the input end of the Buck step-down circuit module and the input end of the first charge pump circuit module are respectively externally connected to an AC-DC adapter, the first output end of the Buck step-down circuit module is connected to the second charge pump circuit module, and the second end of the Buck step-down circuit module
- the output terminal is connected to the system power supply module, and the battery charge and discharge control module is connected to the controlled terminal of the Buck step-down circuit module, the controlled terminal of the first charge pump circuit module, the controlled terminal of the second charge pump block and the double-cell battery,
- the first charge pump circuit module and the second charge pump circuit module are respectively connected to the dual-cell battery, and the second charge pump circuit module is also connected to the system power supply module;
- the battery charge and discharge control module is a control module that controls the Buck step-down circuit module, the first charge pump circuit module and the second charge pump circuit module to work in corresponding charge and discharge stages;
- the buck step-down circuit module works in the trickle charging stage, constant voltage charging stage and charging cut-off stage; on the one hand, it is set to supply power to the system power supply module; Charging batteries;
- the first charge pump circuit module works in the constant current charging stage, and is a circuit module that makes the current output by the first charge pump circuit module smaller than the input current, and makes the voltage output by the charge pump circuit module smaller than the input voltage;
- the second charge pump circuit module also works in the discharge stage, and is a circuit module for converting the discharge voltage of the double-cell battery into a voltage suitable for the system power supply module.
- the Buck step-down circuit module includes: a Buck controller, an input capacitor, an output capacitor, an output inductor, and a charging voltage and current controller, and the Buck controller includes a first transistor and a second transistor;
- the battery information of the charged battery is transmitted to the charging voltage and current controller, the first transistor and the output inductor are connected in series between the AC-DC adapter and the charged battery, the input capacitor is connected in series between the input terminal of the first transistor and the ground, and the output capacitor is connected in series Between the output terminal of the output inductor and the ground, one end of the second transistor is connected between the first transistor and the output inductor, and the other end is grounded; wherein, the battery to be charged is a battery in a double-cell battery or a battery in a power supply system module Battery;
- the first transistor is turned on and the second transistor is turned off;
- the first transistor is turned off and the second transistor is turned on.
- the first charge pump circuit module includes N charge pump circuit submodules arranged in parallel; N ⁇ 1, and is an integer;
- the controlled ends of the N charge pump circuit sub-modules are respectively connected to the battery charge and discharge control module.
- the charge pump circuit submodule includes: a first capacitor, a second capacitor, a third capacitor, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor;
- the input end of the third transistor and one end of the third capacitor are connected to the AC-DC adapter, the other end of the third capacitor is grounded, the output end of the third transistor and the input end of the fourth transistor are connected to the first end of the first capacitor, and the first The other end of the capacitor is connected to the input end of the sixth transistor and the output end of the fifth transistor, the output end of the sixth transistor is grounded, the output end of the fourth transistor, the input end of the fifth transistor and one end of the second capacitor are all connected to the double voltage cell battery, the other end of the second capacitor is grounded;
- the third transistor and the fifth transistor are turned on, and the fourth transistor and the sixth transistor are turned off;
- the fourth transistor and the sixth transistor are turned on, and the third transistor and the fifth transistor are turned off.
- the charge pump circuit submodule includes: a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a seventh transistor, an eighth transistor, a ninth transistor, a tenth transistor, an eleventh transistor, a twelfth transistor and a thirteenth transistor;
- One end of the fourth capacitor and the input end of the seventh transistor are both connected to the AC-DC adapter, the other end of the fourth capacitor is grounded, the output end of the seventh transistor and the input end of the eighth transistor are connected to one end of the fifth capacitor, and the fifth The other end of the capacitor is connected to the input terminal of the ninth transistor and the input terminal of the tenth transistor, the output terminal of the ninth transistor and the output terminal of the thirteenth transistor are both grounded, and the input terminal of the thirteenth transistor and the output terminal of the twelfth transistor Both ends are connected to one end of the sixth capacitor, the other end of the sixth capacitor is connected to the output end of the tenth transistor and the output end of the eleventh transistor, the output end of the eighth transistor, the input end of the eleventh transistor, and the output end of the twelfth transistor The input end of the seventh capacitor and one end of the seventh capacitor are connected to the double-cell battery, and the other end of the seventh capacitor is grounded;
- the seventh transistor, the tenth transistor and the twelfth transistor are turned on, and the eighth transistor, the ninth transistor, the eleventh transistor and the thirteenth transistor are turned off;
- the eighth transistor, the ninth transistor, the eleventh transistor and the thirteenth transistor are turned on, and the seventh transistor, the tenth transistor and the twelfth transistor are turned off.
- the second charge pump circuit module includes: an eighth capacitor, a ninth capacitor, a tenth capacitor, a fourteenth transistor, a fifteenth transistor, a sixteenth transistor, a seventeenth transistor, and an eighteenth transistor and the nineteenth transistor;
- One end of the eighth capacitor is connected to the output end of the fourteenth transistor and the input end of the fifteenth transistor, the other end of the eighth capacitor is connected to the output end of the sixteenth transistor and the input end of the seventeenth transistor, and the seventeenth transistor
- the output end is grounded, the input end of the fourteenth transistor, the input end of the eighteenth transistor and one end of the tenth capacitor are all connected to the AC-DC adapter, the other end of the tenth capacitor is grounded, and the output end of the eighteenth transistor is connected to the fifteenth capacitor.
- the output ends of the transistors are all connected to the input end of the nineteenth transistor, the input end of the sixteenth transistor, the output end of the nineteenth transistor and one end of the ninth capacitor are all connected to the double-cell battery, and the other end of the ninth capacitor is grounded ;
- the working phase of the second charge pump circuit module includes a first charging phase and a first discharging phase
- the fourteenth transistor and the seventeenth transistor are turned on, and the fifteenth transistor, the sixteenth transistor, the eighteenth transistor and the nineteenth transistor are turned off;
- the fifteenth transistor, the sixteenth transistor and the eighteenth transistor are turned on, and the fourteenth transistor, the seventeenth transistor and the nineteenth transistor are turned off;
- the working phase of the second charge pump circuit module includes a second charging phase and a second discharging phase
- the fourteenth transistor and the sixteenth transistor are turned on, and the fifteenth transistor, the seventeenth transistor, the eighteenth transistor and the nineteenth transistor are turned off;
- the fifteenth transistor, the seventeenth transistor and the nineteenth transistor are turned on, and the fourteenth transistor, the sixteenth transistor and the eighteenth transistor are turned off.
- the present disclosure also provides a battery power regulation method, which is executed based on any of the above-mentioned battery power regulation circuits, and the method includes:
- the battery charging and discharging control module collects the charging voltage and charging current of the dual-cell battery in real time, and judges the charging and discharging stage of the dual-cell battery based on the charging voltage and charging current;
- the battery charge and discharge control module controls the Buck step-down circuit module and the second charge pump circuit module to open to work; the second charge pump circuit module plays a boosting role;
- the battery charge and discharge control module also controls the first charge pump circuit module to open to work, so that the current output by the first charge pump circuit module is less than the input current, and the output current from the first charge pump circuit module The voltage is less than the input voltage;
- the battery charging and discharging control module controls the first charge pump circuit module to be turned off;
- the battery charge and discharge control module controls the second charge pump circuit module to turn on, so as to convert the discharge voltage of the double-cell battery into a voltage suitable for the system power supply module.
- the charging and discharging control module determines the charging and discharging stage of the dual-cell battery based on the charging voltage and charging current, including:
- the charging and discharging control module identifies the port type of the AC-DC adapter to determine the voltage threshold and current threshold;
- the charging and discharging control module compares the charging voltage collected in real time with the voltage threshold, and compares the charging current collected in real time with the current threshold, so as to determine the charging and discharging stage of the dual-cell battery.
- the present disclosure also provides a charging cable, including any one of the battery power regulation circuits described above.
- the present disclosure also provides a terminal device, the terminal device includes a dual-cell battery, and the dual-cell battery is charged by any of the above-mentioned battery power regulation circuits, or by any of the above-mentioned battery power regulation methods. , or charge based on any of the charging cables mentioned above.
- a first charge pump circuit module and a second charge pump circuit module are provided; wherein, in the trickle charging phase, constant voltage charging phase and charging cut-off phase, due to The current is small and the heat generation is small.
- the Buck step-down circuit module can be used to reduce the voltage first. On the one hand, it can supply power to the system power supply module. On the other hand, it can boost the voltage through the second charge pump circuit module to charge the dual-cell battery.
- the first charge pump circuit module can be used to control the charging current, so that the output current of the first charge pump circuit module is greater than the input current, which can reduce the current transmitted on the charging wire when charging with a large current.
- the power corresponds to heat generation; when the current decreases, the heat generation is also reduced, thereby reducing the heat generation on the charging wire. Similarly, it can be reduced
- the heating on the charging chip and PCB means reducing the overall heating of the charging circuit and ensuring higher charging efficiency.
- FIG. 1 is a schematic structural diagram of a battery power regulation circuit provided by an embodiment of the present disclosure
- FIG. 2 is a schematic structural diagram of the connection relationship of a Buck step-down circuit module in a battery power regulation circuit provided by an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of a state in which an inductor is in a charging phase in a Buck step-down circuit module provided by an embodiment of the present disclosure
- FIG. 4 is a schematic diagram of a state in which an inductor is in a discharge phase in a Buck step-down circuit module provided by an embodiment of the present disclosure
- FIG. 5 is a schematic structural diagram of another battery power regulation circuit provided by an embodiment of the present disclosure.
- FIG. 6 is a schematic structural diagram of a first charge pump circuit module provided by an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of the state of the first charge pump circuit module shown in FIG. 6 in the capacitor series stage;
- FIG. 8 is a schematic diagram of the state of the first charge pump circuit module shown in FIG. 6 in the capacitor parallel connection stage;
- FIG. 9 is a schematic structural diagram of another first charge pump circuit module provided by an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of the state of the first charge pump circuit module shown in FIG. 9 in the capacitor series stage;
- FIG. 11 is a schematic diagram of the state of the first charge pump circuit module shown in FIG. 9 in the capacitor parallel connection stage;
- FIG. 12 is a schematic structural diagram of a second charge pump circuit module provided by an embodiment of the present disclosure.
- Fig. 13 is the second charge pump circuit module shown in Fig. 12, the state schematic diagram of the charge pump being in the charging stage when the electric core is in the charging stage;
- FIG. 14 is a schematic diagram of the second charge pump circuit module shown in FIG. 12 , when the charge pump is in the discharge phase when the cell is in the charging phase;
- 15 is a schematic diagram of the state of the second charge pump circuit module shown in FIG. 12 , when the charge pump is in the charging phase when the cell is in the discharging phase;
- FIG. 16 is a schematic diagram of the second charge pump circuit module shown in FIG. 12 , when the charge pump is in the discharge phase when the cell is in the discharge phase;
- FIG. 17 is a schematic flow chart of a battery power regulation method provided by an embodiment of the present disclosure.
- 010 dual-cell battery; 020, AC-DC adapter; 110, Buck step-down circuit module, 120, first charge pump circuit module; 125, charge pump circuit sub-module; 130, second charge pump circuit module; 140 , battery charging and discharging control module; 150, system power supply module; 201, Buck controller; 202, input capacitor; 203, output capacitor; 204, output inductor; 205, charging voltage and current controller; C1, first capacitor; C2, The second capacitor; C3, the third capacitor; C4, the fourth capacitor; C5, the fifth capacitor; C6, the sixth capacitor; C7, the seventh capacitor; C8, the eighth capacitor; C9, the ninth capacitor; C10, the tenth capacitor Capacitance; Q1, first transistor; Q2, second transistor; Q3 third transistor; Q4, fourth transistor; Q5, fifth transistor; Q6, sixth transistor; Q7, seventh transistor; Q8, eighth transistor; Q9 , the ninth transistor; Q10, the tenth transistor; Q11, the eleventh transistor; Q12, the twelfth transistor
- a first charge pump circuit module and a second charge pump circuit module are provided; Small, low heat generation, the Buck step-down circuit module can be used to step down first, on the one hand to supply power to the system power supply module, on the other hand, through the second charge pump circuit module to boost the voltage to charge the dual-cell battery.
- the first charge pump circuit module can be used to control. When charging with a large current, the charging efficiency is high and heat generation is reduced.
- the first charge pump circuit module may include a 1/2 times step-down charge pump (its input voltage is twice the output voltage, and the input current is half of the output current), or it may include a 1/3 times step-down The charge pump (the input voltage is 3 times the output voltage, and the input current is 1/3 of the output current), or other types of step-down charge pumps are used, which is not limited here and will be described as an example later.
- the second charge pump circuit module will be used to step down the voltage, and the system power supply module will be powered by the dual-cell battery.
- the charging circuit, charging method, charging line and terminal equipment of the dual-cell battery provided by the embodiments of the present disclosure are exemplarily described below with reference to FIGS. 1-17 .
- FIG. 1 shows a schematic structural diagram of a battery power regulating circuit provided by an embodiment of the present disclosure.
- the battery power regulating circuit is set to charge the double-cell battery 010, and the battery power regulating circuit may include: a Buck step-down circuit module 110, a first charge pump circuit module 120, a second charge pump circuit module 130 , the battery charge and discharge control module 140 and the system power supply module 150; the input end of the Buck step-down circuit module 110 and the input end of the first charge pump circuit module 120 are respectively externally connected to the AC-DC adapter 020, and the first output of the Buck step-down circuit module 110 terminal is connected to the second charge pump circuit module 130, the second output terminal of the Buck step-down circuit module 110 is connected to the system power supply module 150, and the battery charge and discharge control module 140 is connected to the controlled end of the Buck step-down circuit module 110, the first charge pump circuit The controlled end of the module 120, the controlled end of the second charge pump magic block and the double-cell battery 010, the first charge pump circuit
- the Buck step-down circuit module 110 works in the trickle charging stage, the constant voltage charging stage and the charging cut-off stage; on the one hand, it is set to supply power to the system power supply module 150; , to charge the dual-cell battery 010;
- the first charge pump circuit module 120 works in the constant current charging stage, in order to make the current output by the first charge pump circuit module 120 less than the input current, and to make the output by the charge pump circuit module A circuit module whose voltage is lower than the input voltage;
- the second charge pump circuit module 130 also works in the discharge stage, and is a circuit module that converts the discharge voltage of the double-cell battery 010 into a voltage suitable for the system power supply module 150 .
- “dual-cell battery” may also be simply referred to as "battery”.
- the charging phase of the battery may include a trickle charging phase, a constant current charging phase, a constant voltage charging phase and a charging cutoff phase.
- the trickle charging stage can be understood as the "pre-charging stage", which is a small current charging stage; the constant current charging stage is a stage of charging with a constant current value, in this stage, the charging voltage gradually increases; the constant voltage charging stage It is a stage of charging with a constant voltage value. In this stage, the charging current gradually decreases; in the charging cut-off stage, the charging current becomes smaller and smaller. When it is small to a certain extent, it corresponds to the state of the battery being fully charged. For example, This time corresponds to prompting the user to fully charge.
- the various circuit modules may cooperate as follows.
- the battery In the stage of trickle charging, when the voltage of the battery is lower than 6V or a certain voltage value around 6V, the battery can be charged with a constant current of up to 0.1C.
- the battery charge and discharge control module 140 will first judge the port type of the power adapter (that is, the AC-DC adapter 020), and the port type may include, for example, a standard downstream port (Standard Downstream Port, SDP), a dedicated charging port (Dedicated Charging Port, DCP) or charging downstream port (Charging Downstream Port, CDP) or other ports known to those skilled in the art.
- SDP Standard Downstream Port
- DCP dedicated Charging Port
- CDP Charging Downstream Port
- the port type of the AC-DC adapter 020 is a standard downlink port SDP, it means that the port is a pluggable USB interface on a computer, with a current of 500mA and a voltage of 5V; when the port type of the AC-DC adapter 020 is When charging the downlink port CDP, it is similar to a hub, and can be a hub with multiple interfaces, with a current of 1A-1.5A and a voltage of 5V. In the above two cases, the output voltage of the AC/DC adapter 020 is also 5V.
- the battery charge and discharge control module 140 will perform control: turn on the Buck step-down circuit module 110 and the second charge pump circuit module 130 , and turn off the first charge pump circuit module 120 . Therefore, the Buck step-down circuit module is first used to step down the voltage, on the one hand to supply power to the system power supply module 150 ;
- the battery charging and discharging control module 140 will not perform a boost control protocol with the AC-DC adapter 020, and the output voltage of the AC-DC adapter 020 is also 5V, and the battery charging The discharge control module 140 will control: turn on the Buck step-down circuit module and the second charge pump circuit module 130 , and turn off the first charge pump circuit module 120 . Therefore, the Buck step-down circuit module is used to step down the voltage, on the one hand, to supply power to the system power supply module 150;
- the battery charge and discharge control module 140 will control: turn on the first charge pump circuit module 120 , and the battery charge and discharge control module 140 will also perform a boost control protocol with the AC/DC adapter 020 to control the AC/DC adapter 020 to output dynamic voltage and dynamic current to the first charge pump circuit module 120 .
- the first charge pump circuit module 120 will perform high-current charging, and the working principle and working process of the first charge pump circuit module 120 will be described exemplarily below with reference to the accompanying drawings.
- the Buck step-down circuit module 110 will continue to be controlled to supply power to the system power supply module 150; optionally, the second charge pump circuit module 130 can also be controlled to be turned on to distribute part of the charging current. It can be understood that, because the buck step-down circuit module 110 has low efficiency and high heat generation, the Buck step-down circuit module 110 cannot distribute a large charging current, which also determines that the second charge pump circuit module 130 can only perform Part of the charge current distribution.
- the battery charging and discharging control module 140 does not need to perform a boost control protocol with the AC/DC adapter 020, and will control the AC/DC adapter 020 to output a ratio Low battery voltage value, such as 5V or 6V.
- the battery charge and discharge control module 140 will perform control: turn on the Buck step-down circuit module 110 , turn on the second charge pump circuit module 130 , and turn off the first charge pump circuit module 120 . Therefore, the Buck step-down circuit module is first used to step down the voltage, on the one hand to supply power to the system power supply module 150 ;
- the voltage threshold and the current threshold can be set based on the charging requirements of the dual-cell battery, which are not limited here.
- the battery charge and discharge control module 140 will control: turn on the second charge pump circuit module 130 , and connect the dual-cell battery 010 and the system power supply module 150 through the second charge pump circuit module 130 .
- the voltage is stepped down by the second charge pump circuit module 130 to supply power to the system power supply module 150 .
- the system power supply module 160 is mainly to provide relevant power for the system to ensure that the system can work normally.
- the second charge pump circuit module 130 boosts the voltage to charge the dual-cell battery 010; If the voltage is too high, the second charge pump circuit module 130 can step down the output voltage of the dual-cell battery 010 to supply power to the system power supply module 150 .
- a first charge pump circuit module 120 and a second charge pump circuit module 130 are provided; wherein, in the trickle charging phase, the constant voltage charging phase and the charging cut-off phase, Because the current is small and the heat generation is small, the Buck step-down circuit module 110 can be used to step down the voltage first. On the one hand, it can supply power to the system power supply module 150. 010 charging.
- the first charge pump circuit module 120 can be used to control the charging current so that the output current is greater than the input current, which can reduce the current transmitted on the charging wire when charging with a large current.
- a certain impedance based on the power calculation formula I 2 R, power corresponds to heat generation; when the current decreases, the heat generation is also reduced, which can reduce the heat generation on the charging wire.
- the charging chip and PCB can be reduced. Heat generation, that is, to reduce the overall heat generation of the charging circuit to ensure high charging efficiency.
- each circuit module will be exemplarily described below with reference to FIGS. 2-16 .
- FIG. 2 is a schematic structural diagram of a connection relationship of a Buck step-down circuit module in a battery power regulation circuit according to an embodiment of the present disclosure, showing a specific structure of the Buck step-down circuit module.
- Fig. 1 referring to Fig.
- the Buck step-down circuit module 110 includes: Buck controller 201, input capacitor 202, output capacitor 203, output inductor 204 and charging voltage current controller 205, Buck controller 201 includes the first A transistor Q1 and a second transistor Q2; the battery information of the charged battery 030 is transmitted to the charging voltage and current controller 205, the first transistor Q1 and the output inductor 204 are connected in series between the AC-DC adapter 020 and the charged battery 030, and the input capacitor 202 Connected in series between the input terminal of the first transistor Q1 and the ground, the output capacitor 203 is connected in series between the output terminal of the output inductor 204 and the ground, one end of the second transistor Q2 is connected between the first transistor Q1 and the output inductor 204, and the other One end is grounded; in the charging stage of the output inductor 204, the first transistor Q1 is turned on, and the second transistor Q2 is turned off; in the discharging stage of the output inductor 204, the first transistor Q1 is turned off, and
- the Buck step-down circuit module 110 may include a Buck topology, also known as a Buck step-down circuit or a Buck circuit, and the Buck circuit mainly includes: a Buck controller 201, an input capacitor 202, an output capacitor 203, and an output inductor 204; that is, The input capacitor 202 , the output capacitor 203 , the output inductor 204 and the Buck controller 201 form a Buck circuit; the charging voltage and current controller 205 is set to control the voltage and current that change in a sawtooth shape with time.
- the Buck circuit is the main circuit for power conversion, so the charging current, charging efficiency and heat generation are all determined by the circuit components in the Buck circuit.
- the basic working principle of the Buck circuit includes two stages, as follows:
- the first phase that is, the charging phase of the output inductor 204, referring to FIG. 3, the first transistor Q1 is turned on, the second transistor Q2 is turned off, and the output inductor 204 is charged.
- the first transistor Q1 , the output inductor 204 and the charged battery 030 form a main loop, and the main current of the circuit flows through the first transistor Q1 , the output inductor 204 and the charged battery 030 .
- the first transistor Q1 is turned off, the second transistor Q2 is turned on, and the output inductor 204 is discharged.
- the second transistor Q2 , the output inductor 204 and the charged battery 030 form a main loop, and the main current of the circuit flows through the second transistor Q2 , the output inductor 204 and the charged battery 030 .
- the battery to be charged 030 can be the battery in the system power supply module 150, or the battery in the double-cell battery 010. If it is the latter, the main circuit formed above also includes the battery connected to the battery to be charged 030 and The second charge pump circuit module 130 between the output inductors 204 .
- the first transistor Q1 and the second transistor Q2 have conduction loss and switching loss, and the output inductor 204 has coil loss and magnetic core loss, so the efficiency of the entire Buck circuit cannot be very high.
- the conversion efficiency is below 91% in the step-down circuit in which the Buck circuit is usually applied.
- the energy lost by the main power devices including the first transistor Q1, the second transistor Q2, and the output inductor 204 is basically converted into heat energy, causing the Buck circuit to generate more heat when it is used in the charging process, resulting in the entire Buck circuit The charging current cannot be very large.
- the Buck circuit can be adapted to convert the voltage at its input terminal into a voltage suitable for the system power supply module 150, and in the small current charging stage, combined with the second charge pump circuit
- the module 130 charges the dual-cell battery 010, which is beneficial to avoid excessive heat generation during high-current charging and avoid affecting charging efficiency.
- FIG. 5 shows a schematic structural diagram of another battery power regulation circuit provided by an embodiment of the present disclosure.
- the first charge pump circuit module is refined.
- the first charge pump circuit module 120 includes N charge pump circuit submodules 125 arranged in parallel; N ⁇ 1, and is an integer; the controlled terminals of the N charge pump circuit submodules 125 are respectively connected to the battery charge and discharge control Module 140.
- the applicable charging current range of the charge pump circuit sub-module 125 may be 4A-6A.
- the first charge pump circuit module 120 that can be applied to a relatively large charging current can be formed. That is, in practical applications, the number of charge pump circuit sub-modules 125 connected in parallel can be selected according to the size of the charging current. The larger the charging current, the more the number of charge pump circuit sub-modules 125, so that the power supply of the entire charging scheme can be improved. conversion efficiency and reduced heat generation.
- the number of charge pump circuit sub-modules 125 arranged in parallel in the first charge pump circuit module 120 may be 2, and each charge pump circuit sub-module 125 shares 4A-5A.
- the number of the charge pump circuit sub-module 125 in the first charge pump circuit module 120 may also be one.
- the number of charge pump circuit sub-modules 125 in the first charge pump circuit module 120 may vary accordingly, which is not limited herein.
- the charge pump circuit sub-module can use a 1/2 times step-down charge pump, which will be illustrated in conjunction with Figures 6-8 below; it can also be used to use a 1/3 times step-down charge pump, which will be described later in conjunction with Figures 9-11 are illustrative examples.
- FIG. 6 shows a schematic structural diagram of a charge pump circuit sub-module provided by an embodiment of the present disclosure.
- the charge pump circuit sub-module 125 includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5 and a first Six transistors Q6; the input end of the third transistor Q3 and one end of the third capacitor C3 are connected to the AC-DC adapter 020, the other end of the third capacitor C3 is grounded, and the output end of the third transistor Q3 and the input end of the fourth transistor Q4 are connected to The first end of the first capacitor C1, the other end of the first capacitor C1 is connected to the input end of the sixth transistor Q6 and the output end of the fifth transistor Q5, the output end of the sixth transistor Q6 is grounded, the output end of the fourth transistor Q4, The input end of the fifth transistor Q5 and one end of the second capacitor C2 are both connected to the double-
- the step-down is only realized by switching between the conducted capacitors, so there is no energy loss caused by the inductance, so that The conversion efficiency of the whole circuit structure is relatively high. Due to the higher conversion efficiency of the entire circuit structure, its noise (that is, input noise and output noise, corresponding to the fluctuation caused by the inductance switch, which is related to the internal switch control) is small, the fluctuation of the electrical signal is small, and the electromagnetic interference (Electromagnetic Interference , EMI) is small.
- noise that is, input noise and output noise, corresponding to the fluctuation caused by the inductance switch, which is related to the internal switch control
- the fluctuation of the electrical signal is small
- the electromagnetic interference Electromagnetic Interference , EMI
- the charge pump circuit sub-module 125 in the embodiment of the present disclosure adopts a 1/2 step-down charge pump, the input voltage of which is twice the output voltage, and the input current is half of the output current.
- the 1/2x buck charge pump consists of four transistors and three capacitors. By controlling the turn-on and turn-off of the transistors, the capacitors are connected in series and in parallel, so as to realize step-down, which will be illustrated below with reference to FIG. 7 and FIG. 8 .
- the basic working principle of the 1/2 times step-down charge pump includes two stages, as follows:
- the first phase (Phase1), that is, the capacitor series phase, or the capacitor charging phase, as shown in Figure 7, only the third transistor Q3 and the fifth transistor Q5 are turned on, the first capacitor C1 and the second capacitor C2 are connected in series, The capacitors are all charged, and the charging voltage is approximately equal to half of the input voltage, that is, VIN/2.
- the second phase that is, the capacitor parallel connection phase, or the capacitor discharge phase, as shown in Figure 8, only the fourth transistor Q4 and the sixth transistor Q6 are turned on, the first capacitor C1 and the second capacitor C2 are connected in parallel, The capacitors are all discharged, and the output terminal voltage VOUT is equal to the discharge voltage at both ends of the second capacitor C2, which is also equal to the charging voltage at the first stage, ie VIN/2.
- circuit structure and working principle of the 1/2 step-down charge pump are exemplarily described above in conjunction with Fig. 6-Fig. 8, and the circuit of the 1/3 step-down charge pump is exemplarily described below in conjunction with Fig. 9-Fig. 11 structure and working principle.
- FIG. 9 shows a schematic structural diagram of another charge pump circuit sub-module provided by an embodiment of the present disclosure.
- the charge pump circuit sub-module 125 includes: a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a seventh transistor Q7, an eighth transistor Q8, a ninth transistor Q9, and a tenth transistor Q10, the eleventh transistor Q11, the twelfth transistor Q12, and the thirteenth transistor Q13; one end of the fourth capacitor C4 and the input end of the seventh transistor Q7 are connected to the AC-DC adapter 020, and the other end of the fourth capacitor C4 is grounded.
- the output end of the seventh transistor Q7 and the input end of the eighth transistor Q8 are both connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 is connected to the input end of the ninth transistor Q9 and the input end of the tenth transistor Q10.
- the output end of the ninth transistor Q9 and the output end of the thirteenth transistor Q13 are both grounded, the input end of the thirteenth transistor Q13 and the output end of the twelfth transistor Q12 are connected to one end of the sixth capacitor C6, and the other end of the sixth capacitor C6 One end is connected to the output end of the tenth transistor Q10 and the output end of the eleventh transistor Q11, the output end of the eighth transistor Q8, the input end of the eleventh transistor Q11, the input end of the twelfth transistor Q12 and the seventh capacitor C7 One end is connected to the double-cell battery 010, and the other end of the seventh capacitor C7 is grounded; in the capacitor series stage, the seventh transistor Q7, the tenth transistor Q10, and the twelfth transistor Q12 are turned on, and the eighth transistor Q8 and ninth transistor Q9 , the eleventh transistor Q11 and the thirteenth transistor Q13 are turned off; in the stage of capacitor parallel connection, the eighth transistor Q8, the ninth transistor Q9, the eleventh transistor Q11 and the thirteen
- the step-down is only realized by switching between the conducted capacitors, so there is no energy loss caused by the inductance, so that The conversion efficiency of the whole circuit structure is relatively high. Due to the higher conversion efficiency of the entire circuit structure, its noise (that is, input noise and output noise, corresponding to the fluctuation caused by the inductance switch, which is related to the internal switch control) is small, the fluctuation of the electrical signal is small, and the electromagnetic interference (Electromagnetic Interference , EMI) is small.
- noise that is, input noise and output noise, corresponding to the fluctuation caused by the inductance switch, which is related to the internal switch control
- the fluctuation of the electrical signal is small
- the electromagnetic interference Electromagnetic Interference , EMI
- the charge pump circuit sub-module 125 in the embodiment of the present disclosure adopts a 1/3 step-down charge pump, the input voltage of which is 3 times of the output voltage, and the input current is 1/3 of the output current.
- the 1/3 buck charge pump consists of seven transistors and four capacitors. By controlling the turn-on and turn-off of the transistors, the series connection and parallel connection of the capacitors are realized, so as to realize step-down, which will be described exemplarily below with reference to FIG. 10 and FIG. 11 .
- the circuit working principle of the 1/3 times step-down charge pump includes two stages, as follows:
- the first stage (Phase1), that is, the capacitor series stage or the capacitor charging stage, as shown in Figure 10, the seventh transistor Q7, the tenth transistor Q10 and the twelfth transistor Q12 are all closed, that is, turned on; other transistors are turned off , that is, cut off; at this time, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are connected in series, and the three capacitors are all charged, and the charging voltage thereof is approximately equal to 1/3 of the input voltage, that is, 1/3VIN.
- the second phase (Phase2), that is, the capacitor parallel connection phase, or the capacitor discharge phase, as shown in Figure 11, the eighth transistor Q8, the ninth transistor Q9, the eleventh transistor Q11 and the thirteenth transistor Q13 are all closed, that is conduction; other transistors are disconnected, that is, cut-off; at this time, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are connected in parallel, and the three capacitors are all discharged, and the output terminal voltage VOUT is equal to the discharge voltage at both ends of the seventh capacitor C7, also It is equal to the charging voltage of the first stage, which is 1/3VIN. In this way, voltage reduction is achieved.
- the input current of the 1/3 step-down charge pump is 1/3 of the output current
- the input current of the 1/2 step-down charge pump is 1/2 of the output current
- the input current corresponding to the 1/3 step-down charge pump is reduced by 1/3 compared to the input current of the 1/2 step-down charge pump, which greatly reduces the current at the input terminal, thereby reducing the charge on the charging wire.
- Heat generation, heat generation on the charging chip, and heat generation on the PCB ensure high charging efficiency.
- the output current of the 1/3 step-down charge pump will be larger than that of the 1/2 step-down charge pump, that is, it can achieve a larger charging current, improve charging efficiency, and shorten the charging time. charging time.
- circuit structure and working principle of the 1/2 step-down charge pump are exemplified above in conjunction with Fig. 6-Fig. 8, and the circuit structure and working principle of the 1/3 step-down charge pump are described in conjunction with Fig. 9-Fig. 11 An example is given.
- the charge pump circuit sub-module may also use other multiples of step-down charge pumps, which is not limited here.
- the second charge pump circuit module will be illustrated below with reference to FIGS. 12-16 .
- FIG. 12 shows a schematic structural diagram of a second charge pump circuit module provided by an embodiment of the present disclosure.
- the second charge pump circuit module 130 includes: an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a fourteenth transistor Q14, a fifteenth transistor Q15, a tenth
- the other end of C8 is connected to the output end of the sixteenth transistor Q16 and the input end of the seventeenth transistor Q17, the output end of the seventeenth transistor Q17 is grounded, the input end of the fourteenth transistor Q14, and the input end of the eighteenth transistor Q18
- One end of the tenth capacitor C10 is connected to the AC-DC adapter 020, the other end of the
- the second charge pump circuit module 130 internally boosts the voltage during the trickle charge stage, constant voltage charge stage and charge cut-off stage during the charging process, and the Buck step-down circuit
- the output voltage of the module 110 is converted into a voltage suitable for charging the dual-cell battery 010; in the discharge phase, the internal voltage step-down is performed to convert the output voltage of the dual-cell battery 010 into a voltage suitable for supplying power to the system power supply module 150 .
- the second charge pump circuit module 130 is composed of 6 transistors and 3 capacitors; by controlling the turn-on and turn-off of the transistors, charging and discharging of the capacitors is realized, thereby realizing step-down and step-up.
- the boost-down principle of the second charge pump circuit module is exemplarily described below with reference to FIGS. 13-15 .
- the second charge pump circuit module 130 will carry out a voltage boost inside, that is, its output voltage is greater than the input voltage, for example, the output voltage Approximately equal to twice the input voltage.
- the working principle corresponding to the boosting process is as follows:
- the first stage (Phase1) that is, the first charging stage of the second charge pump circuit module, as shown in Figure 13, the fourteenth transistor Q14 and the seventeenth transistor Q17 are turned on, and other transistors are all turned off, that is, cut off; , the eighth capacitor C8 is charged, and the voltage of the eighth capacitor C8 is approximately equal to the input voltage, that is, VIN.
- the voltage step-down is performed inside the second charge pump circuit module, that is, the output voltage is lower than the input voltage, for example, the output voltage is approximately equal to 1/2 of the input voltage.
- the working principle corresponding to the step-down process is as follows:
- the third phase (Phase3), that is, the second charging phase of the second charge pump circuit module, as shown in FIG. 15, the fourteenth transistor Q14 and the sixteenth transistor Q16 are turned on, and the other transistors are all turned off, that is, cut off; At this time, the eighth capacitor C8 and the ninth capacitor C9 are connected in series, both of them are charged, and the voltages on the eighth capacitor C8 and the ninth capacitor C9 are both equal to half of the input voltage, ie VIN/2.
- the fourth phase (Phase4), that is, the second discharge phase of the second charge pump circuit module, as shown in Figure 16, the fifteenth transistor Q15, the seventeenth transistor Q17 and the nineteenth transistor Q19 are turned on, and the other transistors are all turned off On, that is, off; at this time, the eighth capacitor C8 and the ninth capacitor C9 are connected in parallel, both capacitors are discharged, and the output voltage is equal to the charging voltage of the ninth capacitor C9, that is, the output voltage VOUT is equal to VIN/2. Thereby, voltage reduction is realized.
- the transistors in each circuit module or sub-module can be metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) or other switch tubes known to those skilled in the art, or adopt Other types of switches are not limited here.
- MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
- the dual-cell battery power regulation circuit provided by the embodiments of the present disclosure can solve the problem that the charging power of a single cell cannot be increased.
- the charging voltage of a double-cell battery is double that of a single-cell charging, and greater charging power can be achieved with the same charging circuit.
- charging powers of 50W, 60W, 100W or higher can be achieved.
- the battery charging current is half of the current of the single-cell battery.
- the heat generation of the double-cell battery terminal circuit board is significantly reduced, thereby greatly reducing the heat generation.
- the impedance requirement for the battery connector is reduced, which is conducive to reducing costs;
- the reduction of heat generation is conducive to providing safety; at the same time, the wiring and heat dissipation treatment of the battery terminal circuit board PCB will be relatively easy.
- An embodiment of the present disclosure also provides a battery power regulation method, which is executed based on any one of the battery power regulation circuits described above, and has corresponding beneficial effects.
- FIG. 17 shows a schematic flowchart of a method for regulating battery power provided by an embodiment of the present disclosure.
- the battery power regulation method may include:
- the battery charging and discharging control module collects the charging voltage and charging current of the dual-cell battery in real time, and judges the charging and discharging phase of the dual-cell battery based on the charging voltage and charging current.
- the battery charge and discharge control module controls the Buck step-down circuit module and the second charge pump circuit module to be turned on to work; the second charge pump circuit module plays a role of boosting voltage.
- the battery charge and discharge control module also controls the first charge pump circuit module to be turned on to work, so that the current output by the first charge pump circuit module is smaller than the input current, and the current output by the first charge pump circuit module The output voltage of the module is lower than the input voltage.
- the battery charging and discharging control module controls the first charge pump circuit module to turn off.
- the battery charge and discharge control module controls the second charge pump circuit module to turn on, so as to convert the discharge voltage of the dual-cell battery into a voltage suitable for the system power supply module.
- the battery charge and discharge control module is used to control whether other circuit modules work or not, so as to realize charge and discharge control.
- the battery charge and discharge control module can judge the port type of the AC-DC adapter to assist in determining the current threshold and voltage threshold in subsequent steps, and switch between charge and discharge stages; the battery charge and discharge control module collects real-time
- the charging voltage and charging current are set to determine whether the charging voltage is greater than the set voltage threshold and whether the charging current is greater than the set current threshold; if both are greater than, the first charge pump circuit module is controlled to be turned on, and the battery charge and discharge control module will also be the same
- the boost control protocol is carried out between the AC and DC adapters, and the AC and DC adapters are controlled to output dynamic voltage and dynamic current to the first charge pump circuit module to charge the dual-cell battery to achieve high current charging; in the discharge phase, the battery is charged and discharged
- the control module controls the second charge pump circuit module to step down the voltage to supply power to the system power supply module.
- the charging and discharging control module determines the charging and discharging stage of the dual-cell battery based on the charging voltage and charging current, including:
- the charging and discharging control module identifies the port type of the AC-DC adapter to determine the voltage threshold and current threshold;
- the charging and discharging control module compares the charging voltage collected in real time with the voltage threshold, and compares the charging current collected in real time with the current threshold, so as to determine the charging and discharging stage of the dual-cell battery.
- the ranges of the corresponding allowable charging current and charging voltage may be different, so by identifying the port types of the AC and DC adapters, it can assist in determining The voltage threshold and current threshold can be compared with the charging current and charging voltage collected in real time to determine the charging and discharging stage of the dual-cell battery.
- An embodiment of the present disclosure also provides a charging cable, including any battery power regulation circuit described above.
- the above-mentioned battery power regulation circuit can be set at one end of the charging line that is set to connect to the double-cell battery. In this way, a small current can flow through most of the wires of the charging line to reduce heat generation on the wires and slow down the loss of the wires.
- An embodiment of the present disclosure also provides a terminal device, the terminal device includes a dual-cell battery, and the dual-cell battery is charged by any of the above-mentioned battery power regulation circuits, or by any of the above-mentioned battery power regulation methods, or Charging is performed based on any of the above charging lines to achieve corresponding beneficial effects.
- the battery power regulation circuit can also be arranged in the terminal device, and connected to the AC/DC adapter through the charging cable. At this time, the battery power regulation circuit is not provided in the charging line, which simplifies the structure of the charging line.
- the terminal device may be a mobile phone, a tablet, a mobile computer or other rechargeable terminal devices known to those skilled in the art, which is not limited herein.
- the dual-cell battery power regulation circuit is provided with a first charge pump circuit module and a second charge pump circuit module; wherein, in the trickle charging stage, constant voltage charging stage and charging cut-off stage, due to the small current, the heat generation is small , the Buck step-down circuit module can be used to step down the voltage first, on the one hand to supply power to the system power supply module, and on the other hand, to boost the voltage through the second charge pump circuit module to charge the dual-cell battery.
- the first charge pump circuit module can be used to control the charging current, so that the output current of the first charge pump circuit module is greater than the input current, which can reduce the current transmitted on the charging wire when charging with a large current.
- the power corresponds to heat generation; when the current decreases, the heat generation is also reduced, thereby reducing the heat generation on the charging wire. Similarly, it can be reduced
- the heating on the charging chip and the PCB that is, reducing the overall heating of the charging circuit to ensure high charging efficiency, has strong industrial applicability.
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Abstract
Description
Claims (10)
- 一种电池电源调节电路,设置为给双电芯电池充电,所述电路包括:Buck降压电路模块、第一电荷泵电路模块、第二电荷泵电路模块、电池充放电控制模块和***供电模块;所述Buck降压电路模块的输入端和所述第一电荷泵电路模块的输入端分别外接交直流适配器,所述Buck降压电路模块的第一输出端连接所述第二电荷泵电路模块,所述Buck降压电路模块的第二输出端连接所述***供电模块,所述电池充放电控制模块连接所述Buck降压电路模块的受控端、所述第一电荷泵电路模块的受控端、所述第二电荷泵魔块的受控端和所述双电芯电池,所述第一电荷泵电路模块和所述第二电荷泵电路模块分别连接所述双电芯电池,所述第二电荷泵电路模块还连接所述***供电模块;所述电池充放电控制模块为控制所述Buck降压电路模块、所述第一电荷泵电路模块以及所述第二电荷泵电路模块工作于相应的充放电阶段的控制模块;所述Buck降压电路模块工作于涓流充电阶段、恒压充电阶段以及充电截止阶段;一方面设置为给***供电模块供电,另一方面,通过所述第二电荷泵电路模块升压后,给所述双电芯电池充电;所述第一电荷泵电路模块工作于恒流充电阶段,为使由所述第一电荷泵电路模块输出的电流小于输入的电流,以及使由所述电荷泵电路模块输出的电压小于输入的电压的电路模块;所述第二电荷泵电路模块还工作于放电阶段,为将所述双电芯电池的放电电压变换为适用于所述***供电模块的电压的电路模块。
- 根据权利要求1所述的电路,其中,所述Buck降压电路模块包括:Buck控制器、输入电容、输出电容、输出电感和充电电压电流控制器,所述Buck控制器包括第一晶体管和第二晶体管;被充电电池的电池信息传输至所述充电电压电流控制器,所述第一晶体管和所述输出电感串联于所述交直流适配器和所述被充电电池之间,所述输入电容串联于所述第一晶体管的输入端与地之间,所述输出电容串联于所述输出电感的输出端与地之间,所述第二晶体管的一端连接于所述第一晶体管与所述输出电感之间,另一端接地;所述被充电电池为所述双电芯电池中的电池或所述供电***模块中的电池;在输出电感的充电阶段,所述第一晶体管导通,所述第二晶体管截止;在输出电感的放电阶段,所述第一晶体管截止,所述第二晶体管导通。
- 根据权利要求1所述的电路,其中,所述第一电荷泵电路模块包括并联设置的N个电荷泵电路子模块;N≥1,且为整数;所述N个电荷泵电路子模块的受控端分别连接所述电池充放电控制模块。
- 根据权利要求3所述的电路,其中,所述电荷泵电路子模块包 括:第一电容、第二电容、第三电容、第三晶体管、第四晶体管、第五晶体管和第六晶体管;所述第三晶体管的输入端和所述第三电容的一端连接所述交直流适配器,所述第三电容的另一端接地,所述第三晶体管的输出端、所述第四晶体管的输入端均连接所述第一电容的第一端,所述第一电容的另一端连接所述第六晶体管的输入端及所述第五晶体管的输出端,所述第六晶体管的输出端接地,所述第四晶体管的输出端、所述第五晶体管的输入端以及所述第二电容的一端均连接所述双电芯电池,所述第二电容的另一端接地;在电容串联阶段,所述第三晶体管和所述第五晶体管导通,所述第四晶体管和所述第六晶体管截止;在电容并联阶段,所述第四晶体管和所述第六晶体管导通,所述第三晶体管和所述第五晶体管截止。
- 根据权利要求3所述的电路,其中,所述电荷泵电路子模块包括:第四电容、第五电容、第六电容、第七电容、第七晶体管、第八晶体管、第九晶体管、第十晶体管、第十一晶体管、第十二晶体管以及第十三晶体管;所述第四电容的一端和所述第七晶体管的输入端均连接所述交直流适配器,所述第四电容的另一端接地,所述第七晶体管的输出端、所述第八晶体管的输入端均与所述第五电容的一端连接,所述第五电容的另一端连接所述第九晶体管的输入端和所述第十晶体管的输入端,所述第九晶体管的输出端和所述第十三晶体管的输出端均接地,所述第十三晶体管的输入端和所述第十二晶体管的输出端均连接所述第六电容的一端,所述第六电容的另一端连接所述第十晶体管的输出端和所述第十一晶体管的输出端,所述第八晶体管的输出端,所述第十一晶体管的输入端、所述第十二晶体管的输入端以及所述第七电容的一端均连接所述双电芯电池,所述第七电容的另一端接地;在电容串联阶段,所述第七晶体管、所述第十晶体管和所述第十二晶体管导通,所述第八晶体管、所述第九晶体管、所述第十一晶体管和所述第十三晶体管截止;在电容并联阶段,所述第八晶体管、所述第九晶体管、所述第十一晶体管和所述第十三晶体管导通,所述第七晶体管、所述第十晶体管和所述第十二晶体管截止。
- 根据权利要求2或3所述的电路,其中,所述第二电荷泵电路模块包括:第八电容、第九电容、第十电容、第十四晶体管、第十五晶体管、第十六晶体管、第十七晶体管、第十八晶体管和第十九晶体管;所述第八电容的一端连接所述第十四晶体管的输出端和所述第十五晶体管的输入端,所述第八电容的另一端连接所述第十六晶体管的输出端和所述第十七晶体管的输入端,所述第十七晶体管的输出端接地,所述第十四晶体管的输入端、所述第十八晶体管的输入端和所述 第十电容的一端均连接所述交直流适配器,所述第十电容的另一端接地,所述第十八晶体管的输出端和所述第十五晶体管的输出端均与所述第十九晶体管的输入端连接,所述第十六晶体管的输入端、所述第十九晶体管的输出端和所述第九电容的一端均连接所述双电芯电池,所述第九电容的另一端接地;在所述双电芯电池的充电阶段,所述第二电荷泵电路模块的工作阶段包括第一充电阶段和第一放电阶段;在所述第一充电阶段,所述第十四晶体管和所述第十七晶体管打开,所述第十五晶体管、所述第十六晶体管、所述第十八晶体管以及所述第十九晶体管截止;在所述第一放电阶段,所述第十五晶体管、所述第十六晶体管和所述第十八晶体管导通,所述第十四晶体管、所述第十七晶体管以及所述第十九晶体管截止;在所述双电芯电池的放电阶段,所述第二电荷泵电路模块的工作阶段包括第二充电阶段和第二放电阶段;在所述第二充电阶段,所述第十四晶体管和所述第十六晶体管打开,所述第十五晶体管、所述第十七晶体管、所述第十八晶体管以及所述第十九晶体管截止;在所述第二放电阶段,所述第十五晶体管、所述第十七晶体管和所述第十九晶体管打开,所述第十四晶体管、所述第十六晶体管以及所述第十八晶体管截止。
- 一种电池电源调节方法,基于权利要求1-6任一项所述的电池电源调节电路执行,所述方法包括:所述电池充放电控制模块实时采集所述双电芯电池的充电电压以及充电电流,并基于所述充电电压和所述充电电流,判断所述双电芯电池所处的充放电阶段;在所述涓流充电阶段,所述电池充放电控制模块控制所述Buck降压电路模块和所述第二电荷泵电路模块打开,以工作;所述第二电荷泵电路模块起到升压作用;在所述恒流充电阶段,所述电池充放电控制模块还控制所述第一电荷泵电路模块打开,以工作,使由所述第一电荷泵电路模块输出的电流小于输入的电流,以及使由所述第一电荷泵电路模块输出的电压小于输入的电压;在所述恒压充电阶段和所述充电截止阶段,所述电池充放电控制模块控制所述第一电荷泵电路模块关闭;在所述放电阶段,所述电池充放电控制模块控制所述第二电荷泵电路模块打开,以将所述双电芯电池的放电电压变换为适用于所述***供电模块的电压。
- 根据权利要求7所述的电池电源调节方法,其中,所述充放电控制模块基于所述充电电压和所述充电电流,判断所述双电芯电池所处的充放电阶段,包括:所述充放电控制模块识别所述交直流适配器的端口类型,以确定电压阈值和电流阈值;所述充放电控制模块将实时采集的所述充电电压与所述电压阈值进行比较,以及将实时采集的所述充电电流与所述电流阈值进行比较,以确定所述双电芯电池所处的充放电阶段。
- 一种充电线,包括权利要求1-6任一项所述的电池电源调节电路。
- 一种终端设备,包括双电芯电池,所述双电芯电池采用权利要求1-6任一项所述的电池电源调节电路进行充电,或者采用权利要求7或8所述的电池电源调节方法进行充电,或者基于权利要求9所述的充电线进行充电。
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