CN220086972U - Charging management circuit with boosting function - Google Patents
Charging management circuit with boosting function Download PDFInfo
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- CN220086972U CN220086972U CN202320915326.1U CN202320915326U CN220086972U CN 220086972 U CN220086972 U CN 220086972U CN 202320915326 U CN202320915326 U CN 202320915326U CN 220086972 U CN220086972 U CN 220086972U
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- 239000003990 capacitor Substances 0.000 claims description 47
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a charge management circuit with a boosting function, which comprises a power input interface, a battery charging interface, a boosting output interface and a charging chip, wherein the charging chip is a charging chip with a built-in MOS tube boosting circuit, the power input interface is connected with a power input pin of the charging chip, the battery charging interface is connected with a battery charging pin of the charging chip, and the boosting output interface is connected with a boosting output pin of the charging chip. The charging management circuit with the boosting function is charged and boosted by a single chip, and has the advantages of high integration level, few peripheral elements, simple structure and lower cost.
Description
[ technical field ]
The present utility model relates to battery charging management, and more particularly, to a charging management circuit with a boost function.
[ background Art ]
The utility model with the patent number of CN201720157501.X discloses a charger and a charging circuit thereof. In the utility model, the charging circuit provided with the first charging contact end and the second charging contact end and comprising the voltage stabilizing module, the charging module, the boosting module and the charging device of the control module is adopted, so that when the charging device is inserted into the electric equipment, the control module controls the charging module to be not operated and controls the boosting module to supply power to the electric equipment; when the charging device is plugged with the power supply device, the control module controls the boosting module to not work and controls the charging module to charge the charging device, and when the charging device is separated from the electric equipment or the power supply device, the control module controls the circuit to be disconnected, so that the plug-and-play charging is realized, namely, the plug-and-play charging is realized, and the problem that the conventional portable charging device is complex in operation is solved. However, the circuit of the utility model not only comprises a charging chip, but also comprises a boosting chip, and has the advantages of more peripheral elements, high cost and poor reliability.
[ summary of the utility model ]
The utility model aims to solve the technical problem of providing a charge management circuit with a boosting function, which has a simple structure and low cost.
In order to solve the technical problems, the utility model adopts the technical scheme that the charge management circuit with the boosting function comprises a power input interface, a battery charging interface, a boosting output interface and a charging chip, wherein the charging chip is a charging chip with a built-in MOS tube boosting circuit, the power input interface is connected with a power input pin of the charging chip, the battery charging interface is connected with a battery charging pin of the charging chip, and the boosting output interface is connected with a boosting output pin of the charging chip.
The charging management circuit comprises a first capacitor, a second capacitor, a first resistor and a second resistor, wherein the first end of the first resistor is connected with a power input interface, and the second end of the first resistor is connected with a charging current setting pin of a charging chip; the power input interface is grounded through the first capacitor, and the charging current setting pin of the charging chip is grounded through the second capacitor.
The charging management circuit comprises a third capacitor, a sixth capacitor and a first inductor, wherein a battery charging pin of the charging chip is grounded through the third capacitor, and an inductor connecting pin of the charging chip is connected with a battery charging interface through the first inductor; the bootstrap capacitor connecting pin of the charging chip is grounded through a sixth capacitor.
The charging management circuit comprises a resistor voltage-dividing circuit, a seventh capacitor and a ninth capacitor, wherein a boosting output pin of the charging chip is grounded through the resistor voltage-dividing circuit, and a voltage signal output end of the resistor voltage-dividing circuit is connected with an output feedback pin of the charging chip; the seventh capacitor is connected between the boost output pin of the charging chip and the ground, and the ninth capacitor is connected between the boost output pin of the charging chip and the output feedback pin.
The charging management circuit comprises a light emitting diode and a fourth resistor, wherein the anode of the light emitting diode is connected with a charging voltage preset and LED indication pin of the charging chip, and the cathode of the light emitting diode is grounded; the fourth resistor is connected with the light emitting diode in parallel.
The charging management circuit comprises a fifth capacitor, and a system power pin of the charging chip is grounded through the fifth capacitor.
The charging management circuit comprises a control switch, wherein the control switch is connected between the auxiliary power supply and the standby pin of the charging chip.
In the above charge management circuit, the model of the charging chip is JH5600.
The charging management circuit of the utility model is charged and boosted by a single chip, and has high integration level, few peripheral elements, simple structure and lower cost.
[ description of the drawings ]
The utility model will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a circuit diagram of a charge management circuit according to an embodiment of the present utility model.
Detailed description of the preferred embodiments
The structure and principle of the charge management circuit in the embodiment of the utility model are shown in fig. 1, and the charge management circuit comprises a power input interface VI N, a Battery charge interface 4.2V L i Battery, a boost output interface 12Vout and a charge chip U1 with a built-in MOS tube boost circuit. The model of the charging chip U1 is JH5600, and the JH5600 is mainly composed of three modules: boost conversion, linear charging, and LDO regulators. The boosting module can output 6-13V, and when an external power supply exists, the lithium battery is charged until the battery is full. The ENB can control the boost output to work or stand by and hang in the air. The boost output interface 12Vout is connected with a load and outputs 6-13V.
The pin of the charging chip JH5600 functions as follows:
| pin name | Pin serial number | Pin function description |
| ENB | 1 | Circuit standby |
| IN | 2 | External 5V USB charging |
| CS | 3 | Charging current setting |
| BATT | 4 | External single lithium battery |
| VCC | 5 | System power supply |
| BST | 6 | Bootstrap capacitor |
| SW | 7 | Connection inductance |
| OUT | 8 | Boost output |
| FB | 9 | Output feedback |
| LED/VSET | 10 | Charging voltage preset and LED indication |
| GND | 11 | Power ground |
As shown in fig. 1, in the charge management circuit according to the embodiment of the utility model, the power input interface VI N is connected to the power input pin of the charging chip U1, the Battery charging interface 4.2V i Battery is connected to the Battery charging pin of the charging chip U1, and the boost output interface 12Vout is connected to the boost output pin of the charging chip U1. The detailed structure of the circuit is as follows:
the first end of the first resistor R1 is connected with the power input interface VI N, and the second end of the first resistor R1 is connected with the 3 pin (charging current setting pin CS) of the charging chip U1; the power input interface VI N is externally connected with a 5V USB power supply. The power input interface VI N is grounded through the first capacitor C1, and the 3 pin (charging current setting pin CS) of the charging chip U1 is grounded through the second capacitor C2.
The 4 pin (Battery charging pin BATT) of the charging chip U1 is grounded through a third capacitor (the third capacitor is formed by connecting a capacitor C3 and a capacitor C4 in parallel), and the 7 pin (inductor connecting pin SW) of the charging chip U1 is connected with the Battery charging interface 4.2V pi Battery through a first inductor (boost inductor) L1; the 6 pin (bootstrap capacitor connection pin BST) of the charging chip U1 is grounded through the sixth capacitor C6.
The resistor divider circuit is formed by connecting a resistor R2 and a resistor R3 in series, and the seventh capacitor is formed by connecting a capacitor C7 and a capacitor C8 in parallel. The 8 pin (boost output pin OUT) of the charging chip U1 is grounded through a resistor divider circuit formed by connecting a resistor R2 and a resistor R3 in series, and the voltage signal output end of the resistor divider circuit is connected with the 9 pin (output feedback pin FB) of the charging chip U1; a seventh capacitor formed by connecting a capacitor C7 and a capacitor C8 in parallel is connected between the 8 pin (the boost output pin OUT) and the ground of the charging chip U1, and a ninth capacitor C9 is connected between the 8 pin (the boost output pin OUT) and the 9 pin (the output feedback pin FB) of the charging chip U1.
The anode of the light-emitting diode D1 is connected with 10 pins (charging voltage preset and LED indication pins LED/VSET) of the charging chip U1, and the cathode is grounded; the fourth resistor R4 is connected in parallel with the light emitting diode D1. The LED D1 is used as a charging mode indicator lamp, and the charging is always off when the charging is not performed; flashing at 1/4HZ during normal charging; and is always bright after full charge.
The 5 pin (system power pin VCC) of the charging chip U1 is grounded through the fifth capacitor C5. The control switch K1 is connected between the auxiliary power supply BATT and the 1 pin (standby pin ENB) of the charging chip U1.
The boost module of the charging chip U1 can output 6-13V, and when an external power supply exists, the lithium battery is charged until the battery is full. The 1 foot (ENB) of the charging chip U1 can control the boost output to work or stand by, and when the control switch K1 is disconnected, the 1 foot of the charging chip U1 stands by in a suspending mode.
The charging chip U1 may preset a charging voltage: different requirements for the lithium battery can be met by setting the pre-charge voltage at the resistance value of the fourth resistor R4 under 10 pins (the charging voltage preset and the LED indication pins LED/VSET). The functional pins are multiplexed with the LED indication pins.
The charging chip U1 may preset a charging current: for different requirements, the resistance R of CS can be used CS (i.e., the first resistor R1) sets the charging current. The normal charging current value is:
wherein V is CS =0.3v. If R is CS The charging current is 300mA when the current is=1Ω。
Trickle charge current: entering trickle charge when battery voltage is below 2.8V, trickle current I TRK The method comprises the following steps:
charging termination: when the battery voltage reaches a preset voltage and the battery consumption current is less than I END At that time, the charging is terminated.
Input adaptive voltage: for different adapters, when the USB input voltage is lower than 4.7V (VI NREG), the charging current is reduced adaptively, and the function does not overload and damage the adapter.
LDO voltage regulator: the system power supply is obtained by linearly reducing OUT to obtain a higher voltage, the typical value VCC=5.6V, and the system voltage has no load capacity, so that the system power supply cannot be externally used so as not to damage a circuit.
Boost converter: JH5600 integrates a Boost synchronous Boost charge controller with standby function, switching frequency 500KHz,
the lithium battery of the embodiment of the utility model has 3.0-4.4V input, 6-13V output and 12.0V/2A output efficiency of more than 94 percent, and the highest 98 percent of transduction rate of 10W is tested. The MOS tube is built in, if the VDS of the MOS tube is more than 0.2V, the MOS tube enters overcurrent protection, the output power is reduced, and the total power is certain.
And (3) charging protection: the charging chip JH5600 has perfect protection function. The soft start function is built in, faults caused by overlarge impact current during starting are prevented, and protection functions such as overcurrent, short circuit, undervoltage, over-temperature and the like are integrated and output, so that stable and reliable operation of the system is ensured.
The charging management circuit of the embodiment of the utility model can be used in products such as sound equipment, P-DVD, fascia gun and the like, and compared with the prior art, the charging and boosting are completed through a single chip, and the charging management circuit has the advantages of high integration level, fewer peripheral elements, simple structure and lower cost.
Claims (8)
1. The utility model provides a take charge management circuit of function of stepping up, includes power input interface, battery charge interface, step up output interface and the chip that charges, its characterized in that, the chip that charges be built-in MOS pipe boost circuit's the chip that charges, power input interface connects the power input foot of the chip that charges, battery charge interface connects the battery charge foot of the chip that charges, step up output interface connects the output foot that steps up of the chip that charges.
2. The charge management circuit of claim 1, comprising a first capacitor, a second capacitor, and a first resistor, the first terminal of the first resistor being connected to the power input interface, the second terminal being connected to the charging current setting pin of the charging chip; the power input interface is grounded through the first capacitor, and the charging current setting pin of the charging chip is grounded through the second capacitor.
3. The charge management circuit of claim 1, comprising a third capacitor, a sixth capacitor, and a first inductor, wherein the battery charging leg of the charging chip is grounded through the third capacitor, and the inductor connecting leg of the charging chip is connected to the battery charging interface through the first inductor; the bootstrap capacitor connecting pin of the charging chip is grounded through a sixth capacitor.
4. The charge management circuit of claim 1, comprising a resistive divider circuit, a seventh capacitor, and a ninth capacitor, wherein the boost output pin of the charge chip is coupled to ground through the resistive divider circuit, and the voltage signal output of the resistive divider circuit is coupled to the output feedback pin of the charge chip; the seventh capacitor is connected between the boost output pin of the charging chip and the ground, and the ninth capacitor is connected between the boost output pin of the charging chip and the output feedback pin.
5. The charge management circuit of claim 1, comprising a light emitting diode and a fourth resistor, wherein an anode of the light emitting diode is connected to a charging voltage preset and LED indication pin of the charging chip, and a cathode is grounded; the fourth resistor is connected with the light emitting diode in parallel.
6. The charge management circuit of claim 1, comprising a fifth capacitor, wherein the system power pin of the charging chip is coupled to ground through the fifth capacitor.
7. The charge management circuit of claim 1, comprising a control switch coupled between the auxiliary power source and a standby pin of the charging chip.
8. The charge management circuit of claim 1, wherein the charging chip is model JH5600.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320915326.1U CN220086972U (en) | 2023-04-21 | 2023-04-21 | Charging management circuit with boosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320915326.1U CN220086972U (en) | 2023-04-21 | 2023-04-21 | Charging management circuit with boosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220086972U true CN220086972U (en) | 2023-11-24 |
Family
ID=88815570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320915326.1U Active CN220086972U (en) | 2023-04-21 | 2023-04-21 | Charging management circuit with boosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220086972U (en) |
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2023
- 2023-04-21 CN CN202320915326.1U patent/CN220086972U/en active Active
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