WO2022218220A1 - 充放电电路和电子设备 - Google Patents
充放电电路和电子设备 Download PDFInfo
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- WO2022218220A1 WO2022218220A1 PCT/CN2022/085782 CN2022085782W WO2022218220A1 WO 2022218220 A1 WO2022218220 A1 WO 2022218220A1 CN 2022085782 W CN2022085782 W CN 2022085782W WO 2022218220 A1 WO2022218220 A1 WO 2022218220A1
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Definitions
- the present application belongs to the field of electronic circuits, and in particular relates to a charging and discharging circuit and an electronic device.
- the charging and discharging circuit of a mobile phone with dual cells can be shown in Figure 1.
- the charging and discharging circuit includes a Type-C interface, a buck-boost charging IC, a 2:1 step-down charge pump, a power management IC, a peripheral low-voltage module, and a dual-cell battery.
- the purpose of the embodiments of the present application is to provide a charging and discharging circuit and an electronic device, which can solve the problems of large board area and high cost.
- an embodiment of the present application provides a charging and discharging circuit, including: a charging interface, a power management IC, a buck-boost charge pump IC, a battery, and a peripheral low-voltage module, wherein:
- the first end of the power management IC is connected to the charging interface, the second end of the power management IC is connected to the first end of the buck-boost charge pump IC, and the third end of the power management IC is connected to the charging interface.
- the peripheral low-voltage module is connected;
- the second end of the buck-boost charge pump IC is connected to the positive electrode of the battery;
- the power management IC when the battery is in a charging state, reduces the charging voltage provided at the charging interface to the single-cell voltage of the battery, so as to provide the low-voltage external device module and the A buck-boost charge pump IC provides a working voltage, and the buck-boost charge pump IC boosts the voltage of the single cell to a charging voltage of the battery to provide a charging voltage to the battery;
- the buck-boost charge pump IC reduces the discharge voltage provided by the battery to the single-cell voltage to provide an operating voltage to the power management IC, and the The power management IC provides the single-cell voltage to the peripheral low-voltage module as a working voltage of the peripheral low-voltage module.
- an embodiment of the present application provides an electronic device, including the charging and discharging circuit described in the first aspect.
- a charging and discharging circuit includes a charging interface, a power management IC, a buck-boost charge pump IC, a battery and a peripheral low-voltage module, wherein: the first end of the power management IC Connected to the charging interface, the second end of the power management IC is connected to the first end of the buck-boost charge pump IC, the third end of the power management IC is connected to the peripheral low-voltage module; the second end of the buck-boost charge pump IC is connected to The positive pole of the battery is connected; in which, when the battery is in a charged state, the power management IC converts the charging voltage provided at the charging interface into the single-cell voltage of the battery to provide the low-voltage peripheral module and the buck-boost charge pump IC Working voltage, the buck-boost charge pump IC converts the single-cell voltage into the battery's charging voltage to provide the battery with a charging voltage
- the functions of the power management IC and the 2:1 step-down charge pump IC in the circuit can reduce one component on the basis of the traditional charge and discharge circuit. In this way, the footprint and cost of the charge-discharge circuit can be reduced. On the other hand, the function of the power management IC can be maximized, which reduces the function waste of the power management IC.
- FIG. 1 is a schematic structural diagram of a traditional charging and discharging circuit
- FIG. 2 is a schematic structural diagram 1 of a charging and discharging circuit provided by an embodiment of the present application
- FIG. 3 is a schematic structural diagram 1 of a buck-boost charge pump IC provided by an embodiment of the present application;
- FIG. 4 is a second schematic structural diagram of a buck-boost charge pump IC provided by an embodiment of the present application.
- FIG. 5 is a third structural schematic diagram of a buck-boost charge pump IC provided by an embodiment of the present application.
- FIG. 6 is a second structural schematic diagram of a charging and discharging circuit provided by an embodiment of the present application.
- FIG. 7 is a fourth schematic structural diagram of a buck-boost charge pump IC provided by an embodiment of the present application.
- FIG. 8 is a third structural schematic diagram of a charging and discharging circuit provided by an embodiment of the present application.
- FIG. 9 is a fourth schematic structural diagram of a charging and discharging circuit provided by an embodiment of the present application.
- the embodiment of the present application provides a charge and discharge circuit 20, and the charge and discharge circuit 20 is applied to electronic equipment. As shown in FIG. 2, it includes a charging interface 201, a power management IC 202, a buck-boost charge pump IC 203, a battery 204 and a peripheral low-voltage module 205, wherein:
- the first end of the power management IC 202 is connected to the charging interface 201, the second end of the power management IC 202 is connected to the first end of the buck-boost charge pump IC 203, and the third end of the power management IC 202 is connected to the peripheral low-voltage module ;
- the second end of the buck-boost charge pump IC 203 is connected to the positive electrode of the battery 204.
- the power management IC 202 when the battery 204 is in the charging state, the power management IC 202 reduces the charging voltage provided at the charging interface 201 to the single-cell voltage of the battery 204, so as to provide the low-voltage peripheral module 205 and the buck-boost charge pump IC 203 To provide the working voltage, the buck-boost charge pump IC 203 boosts the single-cell voltage to the charging voltage of the battery 204 to provide the battery 204 with a charging voltage; when the battery 204 is in a discharged state, the buck-boost charge pump IC 203 converts the battery The discharge voltage provided by 204 is reduced to a single-cell voltage to provide a working voltage to the power management IC 202, and the power management IC 202 provides a single-cell voltage to the peripheral low-voltage module 205 as the operating voltage of the peripheral low-voltage module 205.
- the battery 204 is composed of at least two cells.
- the charging interface 201 may be a Type-C interface, and may also be other types of charging interfaces, such as a Type-B interface.
- a charging voltage will be provided at the charging interface 201 and the battery 204 will be in a charging state.
- the specifications of the charger are usually 5V/2A, 9V/2A.
- the power management IC 202 integrates a buck step-down function.
- the power management IC 202 reduces the voltage provided at the charging interface 201 to the single-cell voltage of the battery 204 using the integrated buck function.
- the power management IC 202 provides the voltage obtained by the step-down to the peripheral low-voltage module 205 and the buck-boost charge pump IC 203.
- the peripheral low-voltage module 205 uses the single-cell voltage provided by the power management IC 202 as a working voltage to work.
- the peripheral low voltage module 205 may provide the operating voltage for the sensor IC provided in the electronic device.
- the voltage range of the single cell voltage is usually 3.4v-4.4v.
- the power management IC 202 reduces the voltage of 5V to a voltage between 3.4v-4.4v. Taking the specification of the charger as 9V/2A as an example, the power management IC 202 reduces the voltage of 9V to a voltage between 3.4v-4.4v.
- the buck-boost charge pump IC 203 uses the boost function to boost the single-cell voltage provided by the power management IC 202 to the charging voltage of the battery 204 .
- the battery 204 is charged with the charging voltage provided by the buck-boost charge pump IC 203 .
- the voltage range of the charging voltage of the battery 204 is generally between 6.4v-8.4v.
- the battery 204 when the battery 204 is in a discharged state, the battery 204 provides a discharge voltage to the buck-boost charge pump IC 203 .
- the buck-boost charge pump IC 203 uses the buck function to reduce the discharge voltage provided by the battery 204 to a single-cell voltage, and provides the voltage to the power management IC 202 .
- the power management IC 202 operates according to the single-cell voltage provided by the buck-boost charge pump IC 203 . Further, the power management IC 202 provides the single-cell voltage provided by the buck-boost charge pump IC 203 to the peripheral low-voltage module 205 .
- the peripheral low-voltage module 205 uses the single-cell voltage provided by the power management IC 202 as a working voltage to work.
- the discharge voltage provided by the battery 204 to the buck-boost charge pump IC 203 is the same as the charging voltage provided by the buck-boost charge pump IC 203 to the battery 204.
- a charging and discharging circuit includes a charging interface, a power management IC, a buck-boost charge pump IC, a battery and a peripheral low-voltage module, wherein: the first end of the power management IC Connected to the charging interface, the second end of the power management IC is connected to the first end of the buck-boost charge pump IC, the third end of the power management IC is connected to the peripheral low-voltage module; the second end of the buck-boost charge pump IC is connected to The positive pole of the battery is connected; in which, when the battery is in a charged state, the power management IC converts the charging voltage provided at the charging interface into the single-cell voltage of the battery to provide the low-voltage peripheral module and the buck-boost charge pump IC Working voltage, the buck-boost charge pump IC converts the single-cell voltage into the battery's charging voltage to provide the battery with a charging voltage
- the functions of the power management IC and the 2:1 step-down charge pump IC in the circuit can reduce one component on the basis of the traditional charge and discharge circuit. In this way, the footprint and cost of the charge-discharge circuit can be reduced. On the other hand, the function of the power management IC can be maximized, which reduces the function waste of the power management IC.
- the battery 204 includes two cells.
- the buck-boost charge pump IC 203 in the charge-discharge circuit 20 includes: a first switch control unit 2031-1, a first switch 2032-1, a second switch 2033-1, The third switch 2034-1, the fourth switch 2035-1, the first capacitor 2036-1, and the second capacitor 2037-1, wherein:
- the first switch 2032-1, the second switch 2033-1, the third switch 2034-1, and the fourth switch 2035-1 are connected in series between the second terminal and the ground terminal of the power management IC 202 in sequence; the first switch control unit 2031 The four output terminals of -1 are respectively connected to the control terminals of the first switch 2032-1, the second switch 2033-1, the third switch 2034-1 and the fourth switch 2035-1; The terminal is connected between the first switch 2032-1 and the second switch 2033-1, the second terminal of the first capacitor 2036-1 is connected between the third switch 2034-1 and the fourth switch 2035-1; the second capacitor The first end of 2037-1 is connected between the second switch 2033-1 and the third switch 2034-1, and the first end of the second capacitor 2037-1 is connected to the positive electrode of the battery 204. The second terminal is grounded.
- the first switch 2032-1, the second switch 2033-1, the third switch 2034-1, and the fourth switch 2035-1 are all NMOS transistors as an example for illustration.
- the first switch control unit 2031-1 controls the first switch 2032-1 and the third switch 2034-1 to be turned off, and the second switch 2033 -1 and the fourth switch 2035-1 are turned on; in the T2 period, the first switch control unit 2031-1 controls the first switch 2032-1 and the third switch 2034-1 to be turned on, and the second switch 2033-1 and The fourth switch 2035-1 is turned off.
- the buck-boost charge pump IC 203 can boost the single-cell voltage to the charging voltage of the battery 204 .
- the T1 time period and the T2 time period form a charging cycle, and the time length of the T1 time period is the same as the time length of the T2 time period.
- the first switch control unit 2031-1 controls the first switch 2032-1 and the third switch 2034-1 to be turned on, and the second switch 2033-1 and the third switch 2033-1 are turned on.
- the four switches 2035-1 are turned off; in the time period T4, the first switch control unit 2031-1 controls the first switch 2032-1 and the third switch 2034-1 to turn off, and the second switch 2033-1 and the fourth switch 2035 -1 on.
- the buck-boost charge pump IC 203 can reduce the discharge voltage provided by the battery 204 to a single-cell voltage.
- the T3 time period and the T4 time period form a charging cycle, and the time length of the T3 time period is the same as the time length of the T4 time period.
- the foregoing buck-boost charge pump further includes a ninth switch 2039-1 and a drive circuit for the ninth switch 2039-1 2039-2. in:
- the second terminal of the power management IC 202 is connected to the first switch 2032-1 through the ninth switch 2039-1, and the control terminal of the ninth switch 2039-1 is connected to the output terminal of the driving circuit 2039-2.
- the ninth switch 2039-1 is an NMOS transistor as an example for illustration.
- the ninth switch can prevent the current passing through the first switch from flowing backward to the power management IC.
- FIG. 3 in the case where the battery 204 includes four cells, two structures shown in FIG. 3 can be cascaded, or two structures shown in FIG. 4 can be cascaded.
- the buck-boost charge pump IC 203 is realized by cascading one of the structures shown in FIG. 3 and one of the structures shown in FIG. 4 .
- FIG. 5 is illustrated by cascading one structure shown in FIG. 3 and one shown in FIG. 4 to realize the buck-boost charge pump IC 203 as an example.
- the buck-boost charge pump IC 203 includes a bypass control unit 2038.
- the charging and discharging circuit 20 provided in this embodiment of the present application further includes a switch module 206 and a peripheral high-voltage module 207 . in:
- the switch module 206 is connected between the positive electrode of the battery 204 and the peripheral high-voltage module 207 , and the control terminal of the switch module 206 is connected to the output terminal of the bypass control unit 2038 .
- the bypass control unit 2038 controls the switch module 206 to be turned on, and the battery 204 provides a discharge voltage to the peripheral high-voltage module 207 through the switch module 206 as the operating voltage of the peripheral high-voltage module 207 .
- a bypass control unit 2038 is integrated in the buck-boost charge pump IC 203, and the bypass control unit 2038 is used to control the switch module 206 to be in an on state or an off state. Specifically, when the battery 204 is in a discharge state, the bypass control unit 2038 controls the switch module 206 to be in an on state. When the battery 204 is in a charged state, the bypass control unit 2038 controls the switch module 206 to be in an off state.
- the switch module 206 may be one NMOS transistor, or may also be two NMOS transistors arranged back-to-back.
- the battery 204 when the switch module 206 is in an on state, the battery 204 provides a high-voltage discharge voltage to the peripheral high-voltage module 207 through the switch module 206 to drive the peripheral high-voltage module 207 to work. It can be understood that the discharge voltage provided by the battery 204 to the external high voltage module 207 through the switch module 206 is a high voltage that is the same as the discharge voltage.
- the peripheral high voltage module 207 may be a power amplifier module in an audio circuit of an electronic device that requires high voltage.
- the voltage required by the peripheral high-voltage module in the traditional audio circuit is obtained by further boosting the single-cell voltage provided by the power management IC 202 through an additional module.
- the bypass control unit integrated in the buck-boost charge pump IC is used to control the conduction of the newly added switch module, which can provide a path between the battery and the peripheral high-voltage module.
- the high-voltage discharge voltage provided by the battery is used to drive the peripheral high-voltage module to work.
- the function of the buck-boost charge pump IC can be maximized, and the function waste of the buck-boost charge pump IC can be reduced.
- the direct drive of the peripheral high-voltage module can also be realized, thereby saving the components in the electronic equipment.
- the battery 204 includes two battery cells.
- the buck-boost charge pump IC 203 includes: a second switch control unit 2031-2, a fifth switch 2032-2, a sixth switch 2033-2, a seventh switch 2034-2, and an eighth switch 2035- 2.
- the third capacitor 2036-2 and the fourth capacitor 2037-2 wherein:
- the fifth switch 2032-2, the sixth switch 2033-2, the seventh switch 2034-2 and the eighth switch 2035-2 are sequentially connected in series between the second terminal of the power management IC 202 and the ground terminal;
- the second switch control unit The four output terminals of 2031-2 are respectively connected with the control terminals of the fifth switch 2032-2, the sixth switch 2033-2, the seventh switch 2034-2 and the eighth switch 2035-2;
- One end is connected between the fifth switch 2032-2 and the sixth switch 2033-2, and the second end of the third capacitor 2036-2 is connected between the seventh switch 2034-2 and the eighth switch 2035-2;
- the fourth The first end of the capacitor 2037-2 is respectively connected between the sixth switch 2033-2 and the seventh switch 2034-2 and the positive electrode of the battery 204, and the first end of the fourth capacitor 2037-2 is connected to the positive electrode of the battery 204 , the second end of the fourth capacitor 2037-2 is grounded;
- the switch module 206 is connected between the first end of the fourth capacitor 2037-2 and the high-volt
- the fifth switch 2032-2, the sixth switch 2033-2, the seventh switch 2034-2, and the eighth switch 2035-2 are all NMOS transistors, and the buck-boost charge pump IC 203 also
- the driving unit 2039-2 and the ninth switch 2039-1 are included for illustration as an example.
- the principle of boosting and reducing the voltage by the buck-boost charge pump IC 203 may refer to the principle of boosting and reducing the voltage by the buck-boost charge pump IC 203 in the embodiment shown in FIG. 3 . Repeat.
- the battery 204 includes three cells.
- the buck-boost charge pump IC 203 in the charge-discharge circuit 20 provided by the embodiment of the present application includes: a third switch control unit 2031-3, a fourth switch control unit 2032-3, and a tenth switch 2033- 3.
- the tenth switch 2033-3, the eleventh switch 2034-3, the twelfth switch 2035-3 and the thirteenth switch 2036-3 are connected in series between the second terminal of the power management IC 202 and the ground terminal in sequence.
- the fourteenth switch 2037-3, the fifteenth switch 2038-3, the sixteenth switch 2039-3 and the seventeenth switch 20310-3 are connected in series to the eleventh switch 2034-3 and the twelfth switch 2035-3 in sequence. between the connection terminal and the ground terminal.
- the first end of the fifth capacitor 20311-3 is connected between the tenth switch 2033-3 and the eleventh switch 2034-3, and the second end of the fifth capacitor 20311-3 is connected between the twelfth switch 2035-3 and the twelfth switch 2035-3. Thirteen switches between 2036-3.
- the first terminal of the sixth capacitor 20312-3 is connected between the fourteenth switch 2037-3 and the fifteenth switch 2038-3, and the second terminal of the sixth capacitor 20312-3 is connected between the sixteenth switch 2039-3 and the fifteenth switch 2038-3. Between the seventeenth switch 20310-3.
- the first end of the seventh capacitor 20313-3 is connected between the fifteenth switch 2038-3 and the sixteenth switch 2039-3, and the second end of the seventh capacitor 20313-3 is grounded.
- the four output terminals of the third switch control unit 2031-3 are respectively connected to the control terminals of the tenth switch 2033-3, the eleventh switch 2034-3, the twelfth switch 2035-3 and the thirteenth switch 2036-3.
- the four output terminals of the fourth switch control unit 2032-3 are respectively connected to the control terminals of the fourteenth switch 2037-3, the fifteenth switch 2038-3, the sixteenth switch 2039-3 and the seventeenth switch 20310-3 .
- the fifth switch 2038-3, the sixteenth switch 2039-3, and the seventeenth switch 20310-3 are all NMOS transistors for illustration.
- the third switch control unit 2031-3 and the fourth switch control unit 2032-3 may be integrated into the same unit.
- the third switch control unit 2031-3 controls the tenth switch 2033-3 and the twelfth switch 2035-3 to be turned on, and controls the The eleventh switch 2034-3 and the thirteenth switch 2036-3 are turned off.
- the fourth switch control unit 2032-3 controls the fourteenth switch 2037-3 and the sixteenth switch 2039-3 to be turned on, and controls the fifteenth switch 2038-3 and the seventeenth switch 20310-3 to be turned off.
- the third switch control unit 2031-3 controls the tenth switch 2033-3 and the twelfth switch 2035-3 to turn off, and controls the eleventh switch 2034-3 and the thirteenth switch 2036-3 to conduct Pass.
- the fourth switch control unit 2032-3 controls the fourteenth switch 2037-3, the fifteenth switch 2038-3, and the seventeenth switch 20310-3 to be turned on, and controls the sixteenth switch 20310-3 to be turned off.
- the buck-boost charge pump IC 203 can boost the single-cell voltage to the charging voltage of the battery 204 .
- the T5 time period and the T6 time period form a charging cycle, and the time length of the T5 time period is the same as the time length of the T6 time period.
- the third switch control unit 2031-3 controls the tenth switch 2033-3 and the twelfth switch 2035-3 to turn off, and controls the eleventh switch 2034 during the T7 time period. -3 and the thirteenth switch 2036-3 are turned on.
- the fourth switch control unit 2032-3 controls the fourteenth switch 2037-3 and the sixteenth switch 2039-3 to turn off, and controls the fifteenth switch 2038-3 and the seventeenth switch 20310-3 to turn on.
- the third switch control unit 2031-3 controls the tenth switch 2033-3 and the twelfth switch 2035-3 to turn on, and controls the eleventh switch 2034-3 and the thirteenth switch 2036-3 to turn off open.
- the fourth switch control unit 2032-3 controls the fourteenth switch 2037-3, the fifteenth switch 2038-3, and the seventeenth switch 20310-3 to turn off, and controls the sixteenth switch 20310-3 to turn on.
- the buck-boost charge pump IC 203 can reduce the discharge voltage provided by the battery 204 to a single-cell voltage.
- the T7 time period and the T8 time period form a charging cycle, and the time length of the T7 time period is the same as the time length of the T8 time period.
- a ninth switch 2039-1 as shown in FIG. 7 can be added between the second end of the power management IC 202 and the tenth switch 2033-3, and the ninth switch 2039-1 can be controlled by the driving circuit 2039-2 , so as to prevent the current through the tenth switch 2033-3 from flowing backward to the power management IC 202.
- the charging and discharging circuit 20 provided by the embodiment of the present application further includes a step-down charge pump IC 208, wherein:
- the step-down charge pump IC 208 is connected between the charging interface 201 and the positive electrode of the battery 204 .
- the step-down charge pump IC 208 reduces the input voltage of the high-power fast-charging charger connected to the power source to the battery 204 The charging voltage is supplied to the battery 204 . Further, the battery 204 is charged according to the charging voltage provided by the step-down charge pump IC 208.
- the charging and discharging circuit provided by the embodiment of the present application can realize fast charging of the battery.
- the charging and discharging circuit 20 provided by the embodiment of the present application further includes an overvoltage protection module 209, wherein:
- the first end of the power management IC 202 is connected to the charging interface 201 through the overvoltage protection module 209.
- the overvoltage protection module 209 provides protection for the downstream electronic components (the downstream electronic components are specifically the electronic components on the right side of the overvoltage protection module 209 in FIG. 9 ) to protect them from excessive voltage of damage.
- the charging and discharging circuit 20 provided by the embodiment of the present application further includes a battery board-to-board connector 210, wherein:
- the second end of the buck-boost charge pump IC 203 is connected to the positive electrode of the battery 204 through the battery board-to-board connector 210 .
- the charge-discharge circuit 20 provided by the embodiment of the present application includes the step-down charge pump IC 208, and the step-down charge pump IC 208 is also connected to the positive electrode of the battery 204 through the battery board-to-board connector 210.
- connection with the battery 204 is realized through the battery board-to-board connection 210 , which can improve the stability of the connection of the battery 204 .
- the charging and discharging circuit 20 provided by the embodiment of the present application further includes a fuel gauge 211, wherein:
- the fuel gauge 211 is connected between the positive electrode of the battery 204 and the negative electrode of the battery 204 .
- the fuel gauge 211 is used to detect the power in the battery 204 .
- An embodiment of the present application further provides an electronic device, where the electronic device includes the charging and discharging circuit provided by any of the foregoing embodiments.
- the electronic device may be a smart phone, a notebook computer, or the like.
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Abstract
Description
Claims (10)
- 一种充放电电路,其中,包括:充电接口、电源管理IC、升降压电荷泵IC、电池及外设低压模块,其中:所述电源管理IC的第一端与所述充电接口连接,所述电源管理IC的第二端与所述升降压电荷泵IC的第一端连接,所述电源管理IC的第三端与所述外设低压模块连接;所述升降压电荷泵IC的第二端与所述电池的正极连接;其中,在所述电池处于充电状态的情况下,所述电源管理IC将所述充电接口处提供的充电电压降低为所述电池的单电芯电压,以向所述低压外设备模块和所述升降压电荷泵IC提供工作电压,所述升降压电荷泵IC将所述单电芯电压提升为所述电池的充电电压以向所述电池提供充电电压;在所述电池处于放电状态的情况下,所述升降压电荷泵IC将所述电池提供的放电电压降低为所述单电芯电压,以向所述电源管理IC提供工作电压,以及所述电源管理IC向所述外设低压模块提供所述单电芯电压,作为所述外设低压模块的工作电压。
- 根据权利要求1所述的电路,其中,所述升降压电荷泵IC包括旁路控制单元,所述电路还包括开关模块以及外设高压模块,其中:所述开关模块连接在所述电池的正极与所述外设高压模块之间,所述开关模块的控制端与所述旁路控制单元的输出端连接;其中,在所述电池处于放电状态的情况下,所述旁路控制单元控制所述开关模块导通,所述电池通过所述开关模块向所述外设高压模块提供放电电压,作为所述外设高压模块的工作电压。
- 根据权利要求1所述的电路,其中,所述电池包括2个串联的电芯,所述升降压电荷泵IC包括:第一开关控制单元、第一开关、第二开关、第三开关、第四开关、第一电容、第二电容,其中:所述第一开关、所述第二开关、所述第三开关、所述第四开关依次串联 在所述电源管理IC的第二端与接地端之间;所述第一开关控制单元的四个输出端分别与所述第一开关、所述第二开关、所述第三开关及所述第四开关的控制端连接;所述第一电容的第一端连接在所述第一开关与所述第二开关之间,所述第一电容的第二端连接在所述第三开关与所述第四开关之间;所述第二电容的第一端连接在所述第二开关与所述第三开关之间,且所述第二电容的第一端与所述电池的正极连接,所述第二电容的第二端接地。
- 根据权利要求2所述的电路,其中,所述电池包括2个串联的电芯,所述升降压电荷泵IC包括:第二开关控制单元、第五开关、第六开关、第七开关、第八开关、第三电容及第四电容,其中:所述第五开关、所述第六开关、所述第七开关及所述第八开关依次串联在所述电源管理IC的第二端与接地端之间;所述第二开关控制单元的四个输出端分别与所述第五开关、所述第六开关、所述第七开关及所述第八开关的控制端连接;所述第三电容的第一端连接在所述第五开关与所述第六开关之间,所述第三电容的第二端连接在所述第七开关与所述第八开关之间;所述第四电容的第一端分别连接在所述第六开关与所述第七开关之间、以及所述电池的正极,且所述第四电容的第一端与所述电池的正极连接,所述第四电容的第二端接地;所述开关模块连接在所述第四电容的第一端与所述高压外设模块之间,所述开关模块的控制端与所述旁路控制单元连接。
- 根据权利要求3所述的电路,其中,所述升降压电荷泵IC还包括第九开关以及所述第九开关的驱动电路,其中:所述电源管理IC的第二端通过所述第九开关与所述第一开关连接,所述第九开关的控制端与所述驱动电路的输出端连接。
- 根据权利要求1所述的电路,其中,所述电池包括3个串联的电芯,所述升降压电荷泵IC包括:第三开关控制单元、第四开关控制单元、第十开 关、第十一开关、第十二开关、第十三开关、第十四开关、第十五开关、第十六开关、第十七开关、第五电容、第六电容以及第七电容,其中:所述第十开关、所述第十一开关、所述第十二开关以及所述第十三开关依次串联在所述电源管理IC的第二端与接地端之间;所述第十四开关、所述第十五开关、所述第十六开关以及所述第十七开关依次串联在所述第十一开关与所述第十二开关的连接端与接地端之间;所述第五电容的第一端连接在所述第十开关与所述第十一开关之间,所述第五电容的第二端连接在所述第十二开关与所述第十三开关之间;所述第六电容的第一端连接在所述第十四开关与所述第十五开关之间,所述第六电容的第二端连接在所述第十六开关与所述第十七开关之间;所述第七电容的第一端连接在所述十五开关与所述十六开关之间,所述第七电容的第二端接地;所述第三开关控制单元的四个输出端分别与所述第十开关、所述第十一开关、所述第十二开关及所述第十三开关的控制端连接;所述第四开关控制单元的四个输出端分别与所述第十四开关、所述第十五开关、所述第十六开关以及所述第十七开关的控制端连接。
- 根据权利要求1所述的电路,其中,所述电路还包括降压电荷泵IC,其中:所述降压电荷泵IC连接在所述充电接口与所述电池的正极之间。
- 根据权利要求1所述的电路,其中,所述电路还包括过压保护模块,其中:所述电源管理IC的第一端通过所述过压保护模块与所述充电接口连接。
- 根据权利要求1所述的电路,其中,所述电路还包括电池板对板连接器,其中:所述升降压电荷泵IC的第二端通过所述电池板对板连接器与所述电池的正极连接。
- 一种电子设备,其中,所述电子设备包括如权利要求1-9任一项所述 的充放电电路。
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| CN210867228U (zh) * | 2019-11-04 | 2020-06-26 | 中山市悦辰电子实业有限公司 | 应用于高电池电压音响的自动充放电检测电路 |
| WO2020166877A1 (ko) * | 2019-02-12 | 2020-08-20 | 주식회사 실리콘마이터스 | 복수의 셀이 직렬 연결된 배터리에 사용가능한 전력관리장치 |
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| CN105049021B (zh) * | 2015-07-22 | 2018-05-04 | 工业和信息化部电子第五研究所 | 高可靠性负压电荷泵电路与集成电路 |
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