CN217063349U - Charging device with charging protection function - Google Patents
Charging device with charging protection function Download PDFInfo
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- CN217063349U CN217063349U CN202220593343.3U CN202220593343U CN217063349U CN 217063349 U CN217063349 U CN 217063349U CN 202220593343 U CN202220593343 U CN 202220593343U CN 217063349 U CN217063349 U CN 217063349U
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Abstract
The application provides a charging device with charging protection function, it includes: the discharge control circuit is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and is connected with a battery; the voltage detection circuit is connected with the discharge control circuit and is used for detecting the voltage of the battery; and the charging management circuit is connected with the discharging control circuit and the voltage detection circuit and is used for controlling discharging current according to the battery voltage. The charging device with the charging protection function can control the discharging current according to the voltage of the battery, and the charging device is matched with the discharging control circuit to avoid the excessive discharging of the battery cell from causing great damage to the battery cell, so that the service life of the battery can be effectively prolonged, and the charging device has very good practical value.
Description
Technical Field
The utility model relates to a technical field that charges, concretely relates to charging device with charge protection function.
Background
With the development of science and technology, smart phones become more and more common products in life. The charging process of the lithium battery of the mobile phone is not fine, the battery is usually fully charged by only one current, the service cycle of the battery is short, the service life of the battery is short, and the safety is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a charging device with charge protect function, solve among the prior art not long, the life is shorter, the security is also relatively poor technical problem of life cycle of battery.
In order to achieve the above technical object, the technical solution of the utility model provides a charging device with charge protection function, include:
the discharge control circuit is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit is used for being connected with a battery;
the voltage detection circuit is connected with the discharge control circuit and is used for detecting the voltage of the battery;
and the charging management circuit is connected with the discharging control circuit and the voltage detection circuit and is used for controlling discharging current according to the battery voltage.
Compared with the prior art, the beneficial effects of the utility model include: the utility model provides a charging device with charge protect function can be according to the voltage control discharge current of battery, and the cooperation discharge control circuit can avoid electric core excessive discharge to cause great damage for electric core moreover, can effectively promote the life of battery, has very good practical value.
According to some embodiments of the present invention, when the cell voltage is between a first threshold and a second threshold, the discharge control circuit discharges normally; and when the cell voltage is smaller than a first threshold value, the discharge control circuit cuts off the discharge process.
According to some embodiments of the present invention, when the battery voltage is less than a first preset value, the charging management circuit pre-charges the battery;
when the voltage of the battery is between a first preset value and a second preset value, the charging management circuit discharges the battery at a constant current;
and when the battery voltage is greater than a second preset value, the charging management circuit discharges the battery at a constant voltage.
According to the utility model discloses a some embodiments, the charge management circuit includes: power input chip and charge management chip, the B4A9 port of power input chip is connected with first resistance, the other end of first resistance with the VCC port of charge management chip is connected be connected with first electric capacity between the VCC port of charge management chip and the AGND, be connected with second resistance and first LED lamp between the CHRG port of charge management chip and the VCC port, connect third resistance and second LED lamp between the STDBY port of charge management chip and the VCC port connect the fourth resistance between the PROG port of charge management chip and AGND parallel connection has first electric capacity and first power between the BAT port of charge management chip and the AGND.
According to some embodiments of the invention, the discharge control circuit comprises: the device comprises a discharge protection chip and a switch chip, wherein a DO port of the discharge protection chip is connected with a G1 port of the switch chip, a CO port of the discharge protection chip is connected with a G2 port of the switch chip, a VSS port of the discharge protection chip is connected with an S1 port of the switch chip, an S2 port of the switch chip is connected with a GND end, a ninth resistor is connected between an S2 port of the switch chip and a VM port of the discharge protection chip, a fourth capacitor is connected between a VDD port and the VSS port of the discharge protection chip, a VDD port of the discharge protection chip is connected with a tenth resistor, and the other end of the tenth resistor is connected with a BAT port of the charge management chip.
According to some embodiments of the present invention, the voltage detection circuit comprises: the first end of the first triode is connected with GND, the second end of the first triode is connected with a fifth resistor, the other end of the fifth resistor is connected with a VBAT CTL end, the third end of the first triode is connected with a sixth resistor and the first end of a second triode, the other end of the sixth resistor and the second end of the second triode are connected with a V-BAT end, the third end of the second triode is connected with a seventh resistor, and an eighth resistor and a third capacitor are connected between the other end of the seventh resistor and the first end of the first triode in parallel.
According to the utility model discloses a some embodiments, the charging device with charge protect function still includes: the buzzer is connected with the charging management chip of the charging management circuit and used for prompting the charging process.
According to the utility model discloses a some embodiments, the charging device with charge protect function still includes: and the auxiliary power supply is connected with the charging management chip of the charging management circuit.
According to the utility model discloses a some embodiments, charging device with charge protect function still includes: and the entrance guard detection circuit is connected with the discharge protection chip, and the discharge protection chip monitors the cell voltage through the entrance guard detection circuit.
According to the utility model discloses a some embodiments, the charging device with protection function that charges still includes motor drive circuit, with the management circuit connection that charges, motor drive circuit includes: the motor is connected with the motor driving chip.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which the abstract is to be accorded full scope with any one of the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a charging device with a charging protection function according to an embodiment of the present invention;
fig. 2 is a charging management circuit diagram with a charging protection function according to another embodiment of the present invention;
fig. 3 is a circuit diagram of a discharge control circuit with a charge protection function according to another embodiment of the present invention;
fig. 4 is a circuit diagram of a voltage detection circuit with a charging protection function according to another embodiment of the present invention.
Description of reference numerals: a discharge control circuit 110, a voltage detection circuit 120, and a charge management circuit 130.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The utility model provides a charging device with charge protection function can be according to the voltage control discharge current of battery, and the cooperation discharge control circuit can avoid electric core overdischarge to cause great damage for electric core moreover, can effectively promote the life of battery, has very good practical value.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a charging device with a charging protection function according to an embodiment of the present invention.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; and a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, wherein the charge management circuit 130 is configured to control a discharge current according to the battery voltage. The charging device with the charging protection function can control the discharging current according to the voltage of the battery, and the charging control circuit 110 can avoid the excessive discharging of the battery cell from causing great damage to the battery cell, so that the service life of the battery can be effectively prolonged, and the charging device has very good practical value.
When the input voltage is greater than the voltage detection threshold and the enable input terminal of the charge management chip is high, the charge management chip starts to charge the battery. If the voltage of the battery is lower than 2.9V, the charging device pre-charges the battery by using small current; when the voltage of the battery exceeds 2.9V, the charging device charges the battery in a constant current mode; when the voltage of the battery is close to 4.2V, the charging current is gradually reduced, and the charging management chip enters a constant-voltage charging mode; the charging cycle ends when the charging current decreases to the end-of-charge threshold.
When the voltage of the battery cell is between 2.5V and 4.3V, the discharge protection chip controls the two electronic switches in the switch chip to enable the two electronic switches to be in a conducting state, namely the two electronic switches are in an on state; at the moment, the negative electrode of the battery cell is directly communicated with the protection board, and the protection board outputs voltage.
When the voltage of the battery cell is below 2.3V and the battery cell is in an overdischarge state, the discharge protection chip controls the two electronic switches in the switch chip to enable the electronic switches to be in a disconnection state, and the protection board does not output voltage.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; and a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, wherein the charge management circuit 130 is configured to control a discharge current according to the battery voltage.
When the cell voltage is between the first threshold and the second threshold, the discharge control circuit 110 discharges normally; when the cell voltage is smaller than the first threshold, the discharge control circuit 110 cuts off the discharge process.
When the voltage of the battery is less than the first preset value, the charging management circuit 130 pre-charges the battery; when the voltage of the battery is between the first preset value and the second preset value, the charging management circuit 130 discharges the battery at a constant current; when the battery voltage is greater than the second preset value, the charge management circuit 130 discharges the battery at a constant voltage.
Referring to fig. 2 to 4, fig. 2 is a charging management circuit diagram with a charging protection function according to another embodiment of the present invention; fig. 3 is a circuit diagram of a discharge control circuit with a charge protection function according to another embodiment of the present invention; fig. 4 is a circuit diagram of a voltage detection circuit with a charging protection function according to another embodiment of the present invention.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; and a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, wherein the charge management circuit 130 is configured to control a discharge current according to the battery voltage. According to the utility model discloses a some embodiments, the control circuit that discharges includes: the device comprises a discharge protection chip and a switch chip, wherein a DO port of the discharge protection chip is connected with a G1 port of the switch chip, a CO port of the discharge protection chip is connected with a G2 port of the switch chip, a VSS port of the discharge protection chip is connected with an S1 port of the switch chip, an S2 port of the switch chip is connected with a GND end, a ninth resistor is connected between an S2 port of the switch chip and a VM port of the discharge protection chip, a fourth capacitor is connected between a VDD port and the VSS port of the discharge protection chip, a VDD port of the discharge protection chip is connected with a tenth resistor, and the other end of the tenth resistor is connected with a BAT port of the charge management chip.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; and a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, wherein the charge management circuit 130 is configured to control a discharge current according to the battery voltage. The charge management circuit includes: power input chip and charge management chip, the B4A9 port of power input chip is connected with first resistance, the other end of first resistance with the VCC port of charge management chip is connected be connected with first electric capacity between the VCC port of charge management chip and the AGND, be connected with second resistance and first LED lamp between the CHRG port of charge management chip and the VCC port, connect third resistance and second LED lamp between the STDBY port of charge management chip and the VCC port connect the fourth resistance between the PROG port of charge management chip and AGND parallel connection has first electric capacity and first power between the BAT port of charge management chip and the AGND.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is configured to monitor a cell voltage of the charging apparatus, and control a discharge process according to the cell voltage, and the discharge control circuit 110 is configured to connect to a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; and a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, wherein the charge management circuit 130 is configured to control a discharge current according to the battery voltage. According to some embodiments of the present invention, the voltage detection circuit comprises: the first end of the first triode is connected with GND, the second end of the first triode is connected with a fifth resistor, the other end of the fifth resistor is connected with a VBAT CTL end, the third end of the first triode is connected with a sixth resistor and the first end of a second triode, the other end of the sixth resistor and the second end of the second triode are connected with a V-BAT end, the third end of the second triode is connected with a seventh resistor, and an eighth resistor and a third capacitor are connected between the other end of the seventh resistor and the first end of the first triode in parallel.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; a charging management circuit 130 connected to the discharging control circuit 110 and the voltage detection circuit 120, the charging management circuit 130 being configured to control a discharging current according to a battery voltage; and the buzzer is connected with the charging management chip of the charging management circuit 130 and is used for prompting the charging process. The buzzer can be used for prompting that the battery is in a charging state and can also prompt that the charging of the battery is finished.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; a charging management circuit 130 connected to the discharging control circuit 110 and the voltage detection circuit 120, the charging management circuit 130 being configured to control a discharging current according to a battery voltage; and the auxiliary power supply is connected with the charging management chip of the charging management circuit 130.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; a charge management circuit 130 connected to the discharge control circuit 110 and the voltage detection circuit 120, the charge management circuit 130 being configured to control a discharge current according to a battery voltage; and the entrance guard detection circuit is connected with the discharge protection chip, and the discharge protection chip monitors the voltage of the battery cell through the entrance guard detection circuit. The discharge control circuit 110 includes: the device comprises a discharge protection chip and a switch chip, wherein the discharge protection chip is connected with the switch chip and used for monitoring the cell voltage and controlling the connection and disconnection of the switch chip according to the cell voltage.
In one embodiment, a charging device with a charging protection function includes: the discharge control circuit 110 is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit 110 is used for connecting a battery; a voltage detection circuit 120 connected to the discharge control circuit 110, the voltage detection circuit 120 being configured to detect a battery voltage; a charging management circuit 130 connected to the discharging control circuit 110 and the voltage detection circuit 120, the charging management circuit 130 being configured to control a discharging current according to a battery voltage; a motor driving circuit connected to the charging management circuit 130, the motor driving circuit including: the motor is connected with the motor driving chip.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A charging device having a charging protection function, comprising:
the discharge control circuit is used for monitoring the cell voltage of the charging device and controlling the discharge process according to the cell voltage, and the discharge control circuit is used for being connected with a battery;
the voltage detection circuit is connected with the discharge control circuit and is used for detecting the voltage of the battery;
and the charging management circuit is connected with the discharging control circuit and the voltage detection circuit and is used for controlling discharging current according to the battery voltage.
2. The charging device with the charge protection function according to claim 1, wherein when the cell voltage is between a first threshold and a second threshold, the discharge control circuit discharges normally; and when the cell voltage is smaller than a first threshold value, the discharge control circuit cuts off the discharge process.
3. The charging device with charging protection function according to claim 1,
when the voltage of the battery is smaller than a first preset value, the charging management circuit pre-charges the battery;
when the voltage of the battery is between a first preset value and a second preset value, the charging management circuit discharges the battery at a constant current;
and when the battery voltage is greater than a second preset value, the charging management circuit discharges the battery at a constant voltage.
4. The charging device with a charge protection function according to claim 1, wherein the charge management circuit includes: power input chip and charge management chip, the B4A9 port of power input chip is connected with first resistance, the other end of first resistance with the VCC port of charge management chip is connected be connected with first electric capacity between the VCC port of charge management chip and the AGND, be connected with second resistance and first LED lamp between the CHRG port of charge management chip and the VCC port, connect third resistance and second LED lamp between the STDBY port of charge management chip and the VCC port connect the fourth resistance between the PROG port of charge management chip and AGND parallel connection has first electric capacity and first power between the BAT port of charge management chip and the AGND.
5. The charging device with a charge protection function according to claim 1, wherein the discharge control circuit includes: the device comprises a discharge protection chip and a switch chip, wherein a DO port of the discharge protection chip is connected with a G1 port of the switch chip, a CO port of the discharge protection chip is connected with a G2 port of the switch chip, a VSS port of the discharge protection chip is connected with an S1 port of the switch chip, an S2 port of the switch chip is connected with a GND end, a ninth resistor is connected between an S2 port of the switch chip and a VM port of the discharge protection chip, a fourth capacitor is connected between a VDD port and the VSS port of the discharge protection chip, a VDD port of the discharge protection chip is connected with a tenth resistor, and the other end of the tenth resistor is connected with a BAT port of the charge management chip.
6. The charging device with a charge protection function according to claim 1, wherein the voltage detection circuit includes: the first end of the first triode is connected with GND, the second end of the first triode is connected with a fifth resistor, the other end of the fifth resistor is connected with a VBAT CTL end, the third end of the first triode is connected with a sixth resistor and the first end of a second triode, the other end of the sixth resistor and the second end of the second triode are connected with a V-BAT end, the third end of the second triode is connected with a seventh resistor, and an eighth resistor and a third capacitor are connected between the other end of the seventh resistor and the first end of the first triode in parallel.
7. The charging device with a charge protection function according to claim 1, characterized by further comprising: the buzzer is connected with the charging management chip of the charging management circuit and used for prompting the charging process.
8. The charging device with a charge protection function according to claim 1, characterized by further comprising: and the auxiliary power supply is connected with the charging management chip of the charging management circuit.
9. The charging device with a charge protection function according to claim 4, characterized by further comprising: and the entrance guard detection circuit is connected with the discharge protection chip, and the discharge protection chip monitors the cell voltage through the entrance guard detection circuit.
10. The charging device with a charge protection function according to claim 1, further comprising a motor drive circuit connected to the charge management circuit, the motor drive circuit comprising: the motor is connected with the motor driving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593343.3U CN217063349U (en) | 2022-03-17 | 2022-03-17 | Charging device with charging protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593343.3U CN217063349U (en) | 2022-03-17 | 2022-03-17 | Charging device with charging protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217063349U true CN217063349U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220593343.3U Active CN217063349U (en) | 2022-03-17 | 2022-03-17 | Charging device with charging protection function |
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| Country | Link |
|---|---|
| CN (1) | CN217063349U (en) |
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- 2022-03-17 CN CN202220593343.3U patent/CN217063349U/en active Active
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