CN215982666U - Electric arc lighter - Google Patents
Electric arc lighter Download PDFInfo
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- CN215982666U CN215982666U CN202122281490.5U CN202122281490U CN215982666U CN 215982666 U CN215982666 U CN 215982666U CN 202122281490 U CN202122281490 U CN 202122281490U CN 215982666 U CN215982666 U CN 215982666U
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- electric arc
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Abstract
The utility model discloses an electric arc lighter, which comprises: a plurality of batteries connected in series; a switching circuit for generating a start signal; the arc control circuit is provided with two electrodes which are arranged oppositely, and can control the two electrodes to generate an arc when the arc control circuit is electrified; the control circuit is used for driving the arc control circuit to be switched on and off according to whether the starting signal is acquired or not; and the charging management circuit is connected with the positive end and the negative end of the battery and used for carrying out charging management on the battery, and the charging management circuit can carry out current regulation on the charging management circuit according to the change of input voltage or the change of the temperature of the battery. The charging current is automatically managed by adopting different detection modes, a structure that the charging battery needs to be detected by adopting a detection line in the past is omitted, different detection requirements can be met, and the charging current is automatically adjusted according to the change of input voltage or the change of battery temperature.
Description
Technical Field
The utility model relates to an electric arc lighter.
Background
Most of electric arc lighters adopt a rechargeable battery for power supply, when the battery is exhausted, the electric arc lighters need to be charged, and most of the existing charging modes are that a detection line is led out from the rechargeable battery, the voltage of the rechargeable battery is detected, and the charging current is adjusted according to the voltage change of the rechargeable battery.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an electric arc lighter.
In order to achieve the purpose, the utility model provides the following technical scheme:
an arc lighter, comprising:
a plurality of batteries connected in series;
a switching circuit for generating a start signal;
the arc control circuit is provided with two electrodes which are arranged oppositely, and can control the two electrodes to generate an arc when the arc control circuit is electrified;
the control circuit is used for driving the arc control circuit to be switched on and off according to whether the starting signal is acquired or not;
and the charging management circuit is connected with the positive end and the negative end of the battery and used for carrying out charging management on the battery, and the charging management circuit can carry out current regulation on the charging management circuit according to the change of input voltage or the change of the temperature of the battery.
The charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a temperature detection circuit connected with the power supply management chip.
The temperature detection circuit comprises an NTC resistor, one end of the NTC resistor is connected with the input end of the thermistor of the power management chip, and the other end of the NTC resistor is grounded.
The charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a voltage sampling circuit connected with the power supply management chip.
The voltage sampling circuit comprises two resistors which are connected in series, one end of the resistor group which is connected in series is connected with a voltage input end VIN1, the other end of the resistor group is grounded, and a connection node of the two resistors is connected with a voltage sampling end of the power management chip.
The charge management circuit includes a status indication circuit.
And a power supply driving circuit for controlling the on-off of the negative input end of the arc control circuit is arranged between the control circuit and the arc control circuit.
The power supply driving circuit comprises two MOS tubes, the G electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with an output end PWM1 of the control circuit through a resistor R11, the S electrodes of the MOS tube Q5 and the MOS tube Q5A are grounded, and the D electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with the negative input end of the arc control circuit.
The electric arc lighter is also provided with an electric quantity indicating circuit, and the electric quantity indicating circuit comprises a plurality of light emitting diode indicating circuits which are connected in parallel and used for indicating different electric quantities.
The utility model has the beneficial effects that: the charging current is automatically managed by adopting different detection modes, a structure that the charging battery needs to be detected by adopting a detection line in the past is omitted, different detection requirements can be met, and the charging current is automatically adjusted according to the change of input voltage or the change of battery temperature.
Drawings
Fig. 1 is a schematic circuit diagram of a control chip according to the present invention.
Fig. 2 is a circuit schematic diagram of embodiment 1 of the charge management circuit of the present invention.
Fig. 3 is a schematic circuit diagram of embodiment 2 of the charge management circuit of the present invention. .
FIG. 4 is a schematic circuit diagram of an arc control circuit and a power driving circuit according to the present invention.
Fig. 5 is a schematic circuit diagram of the battery and the step-down circuit of the present invention.
Fig. 6 is a circuit schematic of the switching circuit of the present invention.
Fig. 7 is a circuit schematic diagram of the self-locking circuit and the voltage sampling circuit of the present invention.
Fig. 8 is a schematic circuit diagram of the power indicating circuit of the present invention.
Fig. 9 is a circuit schematic of the contour indication circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically connected or connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown, an arc lighter, comprising:
the battery adopts rechargeable batteries which are connected in series to form a battery pack to provide the voltage required by the electric arc lighter, two batteries or three batteries can be connected in series to meet the voltage range between 8V and 13V, a voltage reduction circuit can be arranged, the voltage of the battery is reduced to meet the working voltage of a control circuit by the voltage reduction circuit, a voltage stabilization chip can be adopted by the voltage reduction circuit, and the voltage of the battery is reduced by the voltage stabilization chip;
the switch circuit is used for generating a starting signal, the switch circuit comprises an ignition switch circuit and a safety switch circuit linked with the head cover, the two switch circuits are respectively connected with the input end of the control circuit, one switch circuit is used for starting the signal with the control circuit, the other switch circuit is used as a safety signal, the starting signal sent by the ignition switch circuit can drive the control circuit to work only when the safety signal is obtained, and the safety switch circuit can also be linked with other unlocking mechanisms, is not limited to the head cover and plays a role in protection;
the arc control circuit is provided with two electrodes which are arranged oppositely, and can control the two electrodes to generate an arc when the arc control circuit is electrified, the whole arc control circuit is designed into an arc control circuit board and is arranged independently from other circuits, so that the interference between the arc control circuit and other circuits can be avoided, the arc control circuit depends on two MOS (metal oxide semiconductor) transistors, and the specific circuit is shown in figure 4;
the control circuit is used for driving the arc control circuit to be switched on and off according to whether a starting signal is acquired or not, and comprises a control chip U1, wherein the control chip U1 is provided with a plurality of pins and is respectively used for control connection of different circuits;
and the charging management circuit is connected with the positive end and the negative end of the battery and is used for carrying out charging management on the battery, and the charging management circuit can carry out current regulation on the charging management circuit according to the change of input voltage or the change of battery temperature, and the charging range of the charging management circuit is 8-13V.
Example 1
The charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a temperature detection circuit connected with the power supply management chip.
The temperature detection circuit comprises an NTC resistor, one end of the NTC resistor is connected with a thermistor input end NTC of the power management chip, the other end of the NTC resistor is grounded, the battery temperature is detected through an external NTC resistor (thermistor), and according to the change of the battery temperature, the charging current is automatically adjusted according to the voltage change generated by the change of the NTC resistor due to the change of the thermal resistance value.
The NTC resistor may be connected in parallel with a resistor R2, which plays a role in improving the detection effect.
When the battery is charged, the NTC resistor detects the temperature of the battery, when the detected temperature exceeds a set temperature window value, the system stops charging, an external resistor network is utilized to GND, constant current is output from the NTC terminal, the temperature range of the battery is judged through the voltage drop generated on the resistor network by the current, the internal temperature too low judgment point is 1.44V, and the temperature too high judgment point is 0.38V.
The charge state indicating port STAT of the power management chip is connected with the state indicating circuit, the indication of the current state is realized according to the light change of the state indicating circuit, and when the battery end is in overvoltage, the battery is in short circuit, the charging time is overtime, the chip is over-temperature, and the NTC end detects the abnormal temperature of the battery, the battery can flicker at a certain frequency, so that the prompting effect is achieved.
The ground terminal GND and the analog ground terminal AGND of the power management chip are grounded.
The power supply end VIN of the power management chip is connected with the voltage input end VIN1 through a pull-up resistor R0, and is grounded through a capacitor C1, so that the damage of surge high voltage caused by USB hot plug to the chip is avoided by using the capacitor.
An inductor connecting end LX of the power management chip is connected with one end of an inductor LA0, the other end of the inductor LA0 is connected with a voltage input end VIN1, a diode D3 is connected between the inductor connecting end LX and a boosting output end VBS in parallel, and the boosting output end VBS is sequentially grounded through a plurality of capacitors.
The battery connecting end BAT of power management chip connects the positive pole of battery, and through electric capacity C9 ground connection, and the charging current control port ICHG of power management chip passes through resistance R3 ground connection, can adjust the biggest charging current value through the resistance that changes resistance R3, utilizes the inside self-adaptation loop of power management chip simultaneously, can be according to the temperature variation that NTC resistance detected, automatically regulated charging current size.
During charging, when the battery voltage is less than 8.2V, the charging management circuit is 1/10ICCThe charging management circuit enters a constant current charging mode when the voltage of the battery is larger than 8.2V, enters a constant voltage mode when the voltage of the battery is close to 12.6V, stops charging if the charging current is smaller than 100mA after the battery enters the constant voltage mode, and restarts to charge the battery if the voltage of the battery falls below 12.3V after the battery is fully charged.
Example 2
The charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a voltage sampling circuit connected with the power supply management chip.
The voltage sampling circuit comprises two resistors which are connected in series, one end of a resistor group which is connected in series is connected with a voltage input end VIN1, the other end of the resistor group is grounded, a connection node of the two resistors is connected with a voltage sampling end VSEN of the power management chip, the voltage change of the voltage input end VIN1 is obtained through the voltage sampling circuit, the magnitude of the charging current is adjusted in real time, and the charging current is automatically reduced when the VSEN reaches or is lower than a 1.2V threshold value; when VSEN is below 0.4V, the charging circuit is turned off.
The charge state indicating port STAT of the power management chip is connected with the state indicating circuit, the indication of the current state is realized according to the light change of the state indicating circuit, and when the input is overvoltage, the output is overvoltage or undervoltage, the output is overvoltage, the chip is over-temperature or kerosene is connected.
The ground terminal GND and the analog ground terminal AGND of the power management chip are grounded.
The power supply end VIN of the power management chip is connected with the voltage input end VIN1 through a pull-up resistor R0, and is grounded through a capacitor C1, so that the damage of surge high voltage caused by USB hot plug to the chip is avoided by using the capacitor.
An inductor connecting end LX of the power management chip is connected with one end of an inductor LA0, the other end of the inductor LA0 is connected with a voltage input end VIN1, a diode D3 is connected between the inductor connecting end LX and a boosting output end VBS in parallel, and the boosting output end VBS is sequentially grounded through a plurality of capacitors.
In the charging process, when VBATIf the voltage is less than 2V, the charging management circuit charges the lithium battery by using the set current of 1/20, and the charging management circuit is in a 0V charging mode; when 2V is less than VBATIf the voltage is less than 5.6V, the charging management circuit charges the lithium battery by using the set current of 1/10, and the charging management circuit is in a trickle charging mode; when V is more than 5.6BATIf the voltage is less than 8.4V, the charging management circuit charges with set current and is in a constant current charging mode; when the voltage of the battery is close to 8.4V, the battery is charged in a constant voltage mode; after entering the constant voltage charging mode, when the charging current is lower than 100mA, the charging management circuit stops charging, and a charging cycle of a whole period is completed. When the battery is fully charged, the charging management circuit is restarted when the voltage of the battery drops below 8.2V again to charge the battery, and the automatic recharging function is realized.
And a power supply driving circuit for controlling the on-off of the negative input end of the arc control circuit is arranged between the control circuit and the arc control circuit, and the power supply driving circuit is used for carrying out on-off control on the arc control circuit. The power driving circuit and the arc control circuit are two independent circuit boards which are connected through an electric wire or an interface.
The power supply driving circuit comprises two MOS tubes, the G electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with an output end PWM1 of the control circuit through a resistor R11, the S electrodes of the MOS tube Q5 and the MOS tube Q5A are grounded, and the D electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with the negative input end of the arc control circuit.
The electric arc lighter is further provided with an electric quantity indicating circuit, the electric quantity indicating circuit comprises a plurality of light emitting diode indicating circuits which are arranged in parallel and used for indicating different electric quantities, and the electric arc lighter is further provided with a voltage sampling circuit and used for obtaining the voltage value of the battery and controlling the corresponding light emitting diode indicating circuit to indicate according to the obtained voltage value.
The electric arc lighter is also provided with a contour indicating circuit and can also be used as logo indication.
The electric arc lighter still is equipped with self-locking circuit for whether insert the adapter according to, like charging head, USB etc. and then locking control chip, avoid in the charging process, the maloperation produces electric arc and produces.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.
Claims (9)
1. An electric arc lighter, its characterized in that: it includes:
a plurality of batteries connected in series;
a switching circuit for generating a start signal;
the arc control circuit is provided with two electrodes which are arranged oppositely, and can control the two electrodes to generate an arc when the arc control circuit is electrified;
the control circuit is used for driving the arc control circuit to be switched on and off according to whether the starting signal is acquired or not;
and the charging management circuit is connected with the positive end and the negative end of the battery and used for carrying out charging management on the battery, and the charging management circuit can carry out current regulation on the charging management circuit according to the change of input voltage or the change of the temperature of the battery.
2. The electric arc lighter according to claim 1, wherein: the charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a temperature detection circuit connected with the power supply management chip.
3. The electric arc lighter according to claim 2, wherein: the temperature detection circuit comprises an NTC resistor, one end of the NTC resistor is connected with the input end of the thermistor of the power management chip, and the other end of the NTC resistor is grounded.
4. The electric arc lighter according to claim 1, wherein: the charging management circuit comprises a power supply management chip with a built-in self-adaptive adjusting loop and a voltage sampling circuit connected with the power supply management chip.
5. The electric arc lighter according to claim 4, wherein: the voltage sampling circuit comprises two resistors which are connected in series, one end of the resistor group which is connected in series is connected with a voltage input end VIN1, the other end of the resistor group is grounded, and a connection node of the two resistors is connected with a voltage sampling end of the power management chip.
6. An electric arc lighter according to claim 2, 3, 4 or 5, wherein: the charge management circuit includes a status indication circuit.
7. The electric arc lighter according to claim 1, wherein: and a power supply driving circuit for controlling the on-off of the negative input end of the arc control circuit is arranged between the control circuit and the arc control circuit.
8. The electric arc lighter according to claim 7, wherein: the power supply driving circuit comprises two MOS tubes, the G electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with an output end PWM1 of the control circuit through a resistor R11, the S electrodes of the MOS tube Q5 and the MOS tube Q5A are grounded, and the D electrodes of the MOS tube Q5 and the MOS tube Q5A are connected with the negative input end of the arc control circuit.
9. The electric arc lighter according to claim 1, wherein: the electric arc lighter is also provided with an electric quantity indicating circuit, and the electric quantity indicating circuit comprises a plurality of light emitting diode indicating circuits which are connected in parallel and used for indicating different electric quantities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281490.5U CN215982666U (en) | 2021-09-22 | 2021-09-22 | Electric arc lighter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281490.5U CN215982666U (en) | 2021-09-22 | 2021-09-22 | Electric arc lighter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215982666U true CN215982666U (en) | 2022-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122281490.5U Active CN215982666U (en) | 2021-09-22 | 2021-09-22 | Electric arc lighter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215982666U (en) |
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2021
- 2021-09-22 CN CN202122281490.5U patent/CN215982666U/en active Active
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