CN212486147U - Charging system of talkback battery pack - Google Patents
Charging system of talkback battery pack Download PDFInfo
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- CN212486147U CN212486147U CN202020992994.0U CN202020992994U CN212486147U CN 212486147 U CN212486147 U CN 212486147U CN 202020992994 U CN202020992994 U CN 202020992994U CN 212486147 U CN212486147 U CN 212486147U
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Abstract
The utility model provides a charging system of group battery talkbacks, connect between 5V charger and the group battery of talkbacking including the conversion circuit that charges for convert 5V voltage into the required rated voltage of group battery of talkbacking. The charging conversion circuit comprises a boosting module and a protection module; the boost module is used for boosting the 5V charging voltage to 8.4V so as to charge the talkback battery pack; the protection module is connected with the boosting module and used for detecting the voltage of a single battery in the talkback battery pack, and when the single voltage reaches a set voltage, the protection chip U1 turns off the circuit to realize the overcharge protection of the battery pack. The utility model can realize the 5V voltage to 8.4V voltage through the boosting module, so that the use efficiency of the talkback battery pack is greatly improved without carrying a special 8.4V charger; the single battery is detected through the protection module, the problem that the single battery is overcharged or overdischarged is solved, and the service life and the service time of the battery pack are prolonged.
Description
Technical Field
The utility model relates to an electric and electronic technology field, concretely relates to charging system of group battery of talkbacking.
Background
In the prior art, a special 8.4V charger is generally needed in the charging process of a 7.4V talkback battery pack, but the voltage of 8.4V is difficult to find in reality, the carrying is inconvenient, and the use of the 7.4V talkback battery pack is greatly influenced.
The 5V power supply is available everywhere in reality, so in order to overcome the defects of the prior art, a charging circuit capable of increasing the voltage of 5V to 8.4V is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a charging system for an intercom battery pack.
In order to solve the technical problem, the utility model discloses a technical scheme is: a charging system of an intercom battery pack comprises a charging conversion circuit and an equalization module; the charging conversion circuit is connected between the 5V charger and the talkback battery pack and used for converting 5V voltage into rated voltage required by the talkback battery pack.
The charging conversion circuit comprises a boosting module and a protection module;
the boosting module comprises a boosting circuit, and the boosting circuit comprises a boosting chip U2 and is used for boosting a charging voltage of 5V to 8.4V so as to charge the talkback battery pack;
the boost module comprises a boost circuit and a detection circuit, the boost circuit comprises a boost chip U2, and a pin 1 and a pin GND of the boost chip U2 are connected with a USB interface and used for boosting a 5V charging voltage to 8.4V so as to charge the talkback battery pack.
The talkback battery pack is formed by connecting two battery cells in series.
And the pin 1 and the pin GND of the boosting chip U2 are connected with a USB interface and used for boosting the charging voltage of 5V to 8.4V, so that the charging of the talkback battery pack is realized.
The boost module still includes detection circuitry, detection circuitry connects boost chip U2, detection circuitry includes MOS pipe Q1, 5V power is connected to MOS pipe Q1's source electrode, boost chip U2 is connected to MOS pipe Q1's grid for detect charging current.
The drain electrode of MOS pipe Q1 connects the positive pole of green lamp LED2, the one end of resistance R14 is connected to the negative pole of green lamp LED2, the one end of resistance R12 and the one end of resistance R13 are connected to the other end of resistance R14, the negative pole of red lamp LED1 is connected to the other end of resistance R13, pin 5 of boost chip U2 is connected to the positive pole of red lamp LED1 to realize that detection circuit detects charging current and shows the current situation simultaneously.
The equalizing module is connected with the detection circuit and comprises an equalizing chip U3 and an equalizing chip U4, and the equalizing chip U3 and the equalizing chip U4 are used for controlling charging current and voltage.
And the pins 6 of the equalizing chip U3 and the equalizing chip U4 are respectively connected with the gates of the MOS transistor Q4 and the MOS transistor Q5 and are used for controlling the charging current.
The protection module comprises a protection chip U1, the protection chip U1 is connected with the boosting module and used for detecting the voltage of a single battery in the talkback battery pack, and when the voltage of the single battery reaches a set voltage, the protection chip U1 turns off the circuit to realize the overcharge protection of the battery pack.
The protection chip U1 is connected MOS pipe Q2 and MOS pipe Q3, and when detecting that single voltage reaches the set voltage, protection chip U1 control MOS pipe and turn off to the overcharge protection of realization group battery.
A capacitor C1 is connected in series between the pin 5 and the pin 6 of the protection chip U1, and a capacitor C2 is connected in series between the pin 4 and the pin 6 of the protection chip U1 and used for protecting a circuit.
The battery pack protection circuit is characterized in that one end of a pin 5 connecting resistor R1 of the protection chip U1 is connected, the other end of the resistor R1 is connected with the anode of the battery pack, one end of a pin 4 connecting resistor R2 of the protection chip U1 is connected with the other end of the resistor R5, the cathode of the battery pack is connected with a pin 6 of the protection chip U1, and the voltage of a single battery is detected.
The utility model has the advantages and positive effects that:
(1) the utility model discloses a boost module has realized rising 5V voltage to 8.4V voltage for need not to carry the special charger of 8.4V, improved the availability factor of group battery of talkbacking widely.
(2) The utility model discloses a protection module has realized detecting single battery, prevents that single battery from taking place the problem of overcharging or putting excessively to the influence group battery life-span of talkbacking.
(3) The utility model discloses an equalizing module has realized equalizing chip U3 and equalizing chip U4 and has detected single battery voltage simultaneously for the charging current of every battery is the same, prevents that the overcharge from appearing in single battery, has prolonged the life and the live time of group battery.
Drawings
Fig. 1 is a block diagram illustrating an overall structure of a charging system for an intercom battery pack according to the present invention;
fig. 2 is a schematic circuit diagram of a boost module of a charging system for an intercom battery pack according to the present invention;
fig. 3 is a schematic circuit diagram of a protection module of a charging system for an intercom battery pack according to the present invention;
fig. 4 is a schematic circuit diagram of an equalizing module of a charging system of an intercom battery pack according to the present invention.
Detailed Description
As shown in fig. 1 to 4, the present invention provides a charging system for an intercom battery pack, which includes a charging conversion circuit and an equalizing module; the charging conversion circuit is connected between the 5V charger and the talkback battery pack and used for converting 5V voltage into rated voltage required by the talkback battery pack.
The talkback battery pack is formed by connecting two battery cells in series.
The charging conversion circuit comprises a boosting module and a protection module;
the boosting module comprises a boosting circuit, and the boosting circuit comprises a boosting chip U2 and is used for boosting a charging voltage of 5V to 8.4V so as to charge the talkback battery pack;
the pin 1 of the boosting chip U2 is connected with one end of an inductor L1 and one end of a capacitor C6, the other end of the inductor L1 is connected with the pin 3 of the boosting chip U2, one end of a capacitor C5 and the pin 1 of a USB interface J3, the pin 2 of the boosting chip U2 is connected with the other end of a capacitor C6, the pin 4 of the boosting chip U2 is connected with one end of a resistor R8, the other end of the resistor R8 is connected with the pin GND of the boosting chip U2, the other end of a capacitor C5 and the pin 5 of the USB interface J3, the pin 5 of the boosting chip U2 is connected with a detection circuit, the pin 6 of the boosting chip U2 comprises one end of a resistor R9 and one end of a resistor R10, the other end of the resistor R9 is connected with one end of a capacitor C8 and ground, the other end of the resistor R10 is connected with the other end of the capacitor C10, one end of the pin 7 of the boosting chip U10 and the protection module are connected with, and a pin 8 of the boosting chip U2 is connected with one end of a capacitor C7, and the other end of the capacitor C7 is grounded and used for boosting the charging voltage of 5V to 8.4V, so that the charging of the talkback battery pack is realized.
The detection circuit comprises a MOS tube Q1, a 5V power supply is connected to the source of the MOS tube Q1, one end of a gate connecting resistor R11 of the MOS tube Q1 and one end of a resistor R12, the anode of a green light LED2 is connected to the drain of the MOS tube Q1, one end of a cathode connecting resistor R14 of the green light LED2, the other end of the resistor R14, the other end of the resistor R12 and one end of the resistor R13 are connected, the cathode of a red light LED1 is connected to the other end of the resistor R13, the anode of the red light LED1 is connected with a pin 5 of a boosting chip U2 and the other end of the resistor R11, and the current condition is displayed when the detection circuit detects the charging current.
The protection module comprises a protection chip U1, the protection chip U1 is connected with the boosting module and used for detecting the voltage of a single battery in the talkback battery pack, and when the voltage of the single battery reaches a set voltage, the protection chip U1 turns off the circuit to realize the overcharge protection of the battery pack.
Protection chip U1 connects MOS pipe Q2 and MOS pipe Q3, MOS pipe Q2 and MOS pipe Q3 are double-circuit MOS pipe, and when detecting that single voltage reaches the settlement voltage, protection chip U1 control MOS pipe cuts off to the overcharge protection to the realization to the group battery.
A pin 5 of the protection chip U1 is connected with one end of a resistor R1 and one end of a capacitor C1, the other end of the resistor R1 is connected with the anode of a battery pack, a pin 4 of the protection chip U1 is connected with one end of a resistor R2 and one end of a capacitor C2, the other end of the resistor R5 is connected with the connecting electrodes of two batteries, a pin 6 of the protection chip U1 is connected with the other end of a capacitor C1, the other end of the capacitor C2, the left source of a MOS transistor Q2, the left source of a MOS transistor Q3 and the cathode of the battery pack, the capacitor C1 and the capacitor C2 are used for a protection circuit and used for detecting the voltage of a single battery, a pin 1 of the protection chip U1 is connected with the left gate of a MOS transistor Q2 and the left gate of a MOS transistor Q3, a pin 2 of the protection chip U1 is connected with the right gate of a transistor Q2 and the right gate of a transistor Q3, and a pin 3 of the protection chip U1 is connected with the source, The right source of MOS pipe Q3, the one end of resistance R3, the other end and the ground connection of electric capacity C9, pin 3 connecting resistance R3's the other end of protection chip U1 for when detecting that single voltage reaches the settlement voltage, protection chip U1 control MOS pipe Q2 and MOS pipe Q3 turn off, in order to realize the overcharge protection to the group battery.
The equalizing module is connected with the detection circuit and comprises an equalizing chip U3 and an equalizing chip U4, and the equalizing chip U3 and the equalizing chip U4 are used for controlling charging current and voltage.
A pin 2 of the equalizing chip U3 is connected with one end of a resistor R4 and one end of a capacitor C3, a pin 3 of the equalizing chip U3 is connected with the other end of the capacitor C3, one end of a resistor R5, one end of a resistor R7, a source of a MOS transistor Q4 and connecting electrodes of two battery cells, a pin 6 of the equalizing chip U3 is connected with a grid of a MOS transistor Q4, a drain of the MOS transistor Q4 is connected with one end of a resistor R6, and the other end of the resistor R6 is connected with the other end of the resistor R4 and the anode of the battery pack and is used for detecting and controlling the first battery of the battery pack;
a pin 2 of the equalizing chip U4 is connected with the other end of the resistor R5 and one end of the capacitor C4, a pin 3 of the equalizing chip U4 is connected with the other end of the capacitor C4, the source of the MOS tube Q5 and the negative electrode of the battery pack, a pin 6 of the equalizing chip U4 is connected with the grid of the MOS tube Q5, the drain of the MOS tube Q5 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the connecting electrodes of the two battery cells and is used for detecting and controlling the second battery of the battery pack; the equalizing chip U4 is connected with a MOS tube Q4 and a MOS tube Q5 and used for controlling charging current.
The utility model discloses a theory of operation and working process as follows: the USB interface is connected with 5V voltage, the voltage boosting chip U2 boosts the 5V voltage to 8.4V voltage, then the battery pack is charged, meanwhile, the protection chip U1 detects the voltage of a single battery of the battery pack, and when the voltage of one battery reaches a set voltage, the protection chip U1 controls the MOS tube Q1 and the MOS tube Q2 to be switched off, so that the overcharge protection of the battery pack is realized;
in the charging process, the voltage boosting chip U2 detects the charging current, and when the charging current is greater than a set value, the voltage boosting chip U2 outputs high level, so that an MOS (metal oxide semiconductor) tube Q1 of the detection circuit is closed, the red light LED1 is communicated, and the green light LED2 is turned off; when the charging current is smaller than a set value, the boosting chip U2 outputs a low level to enable the MOS tube Q1 of the detection circuit to be switched on, the red light LED1 is switched off, and the green light LED2 is switched on, so that the current condition is displayed while the charging current is detected;
when the batteries are charged again, the equalizing chip U3 detects the voltage of the first battery, the equalizing chip U4 detects the voltage of the second battery, when the detected voltage reaches a set value, the pin 6 of the equalizing chip U3 and the pin 6 of the equalizing chip U4 output high voltage, the MOS transistor Q3 and the MOS transistor Q4 are controlled to be conducted, the charging current is shunted, the charging current of the battery with higher voltage is reduced, the charging current of the battery with lower voltage is increased, the charging current of each battery is the same, and overcharge of a single battery is prevented.
The utility model is characterized in that: the 5V voltage is increased to 8.4V voltage through the boosting module, so that a special 8.4V charger is not required to be carried, and the use efficiency of the talkback battery pack is greatly improved; the detection of the single battery is realized through the protection module, and the problem of overcharge or overdischarge of the single battery is prevented, so that the service life of the talkback battery pack is influenced; the equalizing module is used for detecting the voltage of the single battery by the equalizing chip U3 and the equalizing chip U4, so that the charging current of each battery is the same, the single battery is prevented from being overcharged, and the service life and the service time of the battery pack are prolonged.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (10)
1. The charging system of a kind of intercom assembled battery, characterized by, including charging the switching circuit and equalizing module; the charging conversion circuit is connected between the 5V charger and the talkback battery pack and used for converting 5V voltage into rated voltage required by the talkback battery pack.
2. The charging system of an intercom battery pack according to claim 1, wherein said charge conversion circuit includes a boost module and a protection module;
the boost module comprises a boost circuit and a detection circuit, the boost circuit comprises a boost chip U2, and a pin 1 and a pin GND of the boost chip U2 are connected with a USB interface and used for boosting a 5V charging voltage to 8.4V so as to charge the talkback battery pack.
3. The charging system of an intercom battery pack as claimed in claim 2, wherein said detection circuit is connected with a boost chip U2, said detection circuit comprises a MOS transistor Q1, the source of said MOS transistor Q1 is connected with a 5V power supply, the gate of said MOS transistor Q1 is connected with a boost chip U2 for detecting the charging current.
4. The charging system of an intercom battery pack as claimed in claim 3, wherein a drain of said MOS transistor Q1 is connected to an anode of a green light LED2, a cathode of said green light LED2 is connected to one end of a resistor R14, the other end of said resistor R14 is connected to one end of a resistor R12 and one end of a resistor R13, the other end of said resistor R13 is connected to a cathode of a red light LED1, and an anode of said red light LED1 is connected to a pin 5 of a boost chip U2, so as to display the current condition while the detection circuit detects the charging current.
5. The charging system of an intercom battery pack as claimed in claim 2, wherein the protection module comprises a protection chip U1, the protection chip U1 is connected to the boost module for detecting the voltage of a single battery in the intercom battery pack, and when the voltage of the single battery reaches a set voltage, the protection chip U1 turns off the circuit to protect the battery pack from overcharging.
6. The charging system of an intercom battery pack as claimed in claim 5, wherein said protection chip U1 is connected to MOS transistor Q2 and MOS transistor Q3, and when detecting that a single voltage reaches a set voltage, the protection chip U1 controls the MOS transistor to turn off, so as to protect the battery pack from overcharge.
7. The charging system of claim 5, wherein a capacitor C1 is connected in series between pin 5 and pin 6 of the protection chip U1, and a capacitor C2 is connected in series between pin 4 and pin 6 of the protection chip U1 for protecting the circuit.
8. The charging system of an intercom battery pack as claimed in claim 2, wherein said equalizing module is connected to the detection circuit, said equalizing module comprises an equalizing chip U3 and an equalizing chip U4 for controlling the charging current and voltage, and pins 6 of said equalizing chip U3 and said equalizing chip U4 are respectively connected to the gates of MOS transistor Q4 and MOS transistor Q5 for controlling the charging current.
9. The system for charging an intercom battery pack as claimed in claim 1, wherein said intercom battery pack is formed by two battery cells connected in series.
10. The charging system of an intercom battery pack as claimed in claim 5, wherein pin 5 of said protection chip U1 is connected with one end of a resistor R1, the other end of said resistor R1 is connected with the positive pole of the battery pack, pin 4 of said protection chip U1 is connected with one end of a resistor R2, the other end of said resistor R2 is connected with the connecting poles of two batteries, and pin 6 of said protection chip U1 is connected with the negative pole of the battery pack for detecting the voltage of a single battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992994.0U CN212486147U (en) | 2020-06-03 | 2020-06-03 | Charging system of talkback battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020992994.0U CN212486147U (en) | 2020-06-03 | 2020-06-03 | Charging system of talkback battery pack |
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| CN212486147U true CN212486147U (en) | 2021-02-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711236A (en) * | 2020-06-03 | 2020-09-25 | 上海艾可慕通讯科技有限公司 | Charging system and charging method of talkback battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711236A (en) * | 2020-06-03 | 2020-09-25 | 上海艾可慕通讯科技有限公司 | Charging system and charging method of talkback battery pack |
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