CN205356157U - Circuit system of handheld hot sword of portable low -voltage direct current - Google Patents
Circuit system of handheld hot sword of portable low -voltage direct current Download PDFInfo
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- CN205356157U CN205356157U CN201521081656.7U CN201521081656U CN205356157U CN 205356157 U CN205356157 U CN 205356157U CN 201521081656 U CN201521081656 U CN 201521081656U CN 205356157 U CN205356157 U CN 205356157U
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Abstract
The utility model discloses a circuit system of handheld hot sword of portable low -voltage direct current belongs to electric heating cutting instrument field. The utility model discloses a circuit system, its control circuit is connected with power conversion circuit through drive circuit, the battery passes through power conversion circuit and connects the electrical knife blade, power conversion circuit feeds back to control circuit through current detection circuit with the signal of telecommunication, the battery is connected with control circuit through voltage stabilizing circuit, power conditioning circuitry is connected with control circuit, and control circuit gathers power conditioning circuitry and current detection circuit's the signal of telecommunication, and transmit for power conversion circuit through drive circuit, convert the input voltage of battery into low voltage and high current output, generate heat for the electrical knife blade. The utility model discloses utilize power conversion circuit to convert the input voltage of battery into low voltage and high current output, realized the dc supply of electrical knife, make the electrical knife lightly portable, have use safe and reliable simultaneously, the electrical energy conversion characteristics such as efficient of generating heat.
Description
Technical field
This utility model relates to the control circuit of a kind of endotherm knife, more particularly, it relates to the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter.
Background technology
Endotherm knife, as the term suggests, it is simply that utilize electric energy heating to realize the hand-held cutter of cutting.Mainly having the endotherm knife of two kinds of different principle on existing market, one is to load onto heating wire inside blade, generates heat after energising, and the advantage of this endotherm knife is low price, and cost is low, simple in construction；Shortcoming is that blade is thicker, and preheating is slow, can only be used for cutting foam series products；Another kind is the resistance utilizing blade, logical super-high-current realizes the hand-held endotherm knife of heating, major brand has willing enlightening endotherm knife, generation boat endotherm knife etc., this endotherm knife is very short for preheating time, as long as several seconds kind blades just can reach red state, efficiency is high, shape is changeable, different power blades, applied range can be selected, it is possible to be used for cutting foam, sponge, plastics, chemical fabric, non-woven fabrics, filter cloth, plastic ties and rubber etc. low melting point goods according to different use occasions.
At present, existing endotherm knife all uses 230V (or 110V) AC power frequency transformator or high frequency transformer, the afterbody of this endotherm knife is required for connecting a power line connecting power supply, cause that the property easy to use of endotherm knife is poor, and just cannot employ in some occasions not having power supply, therefore, the battery-driven Portable electric-heating cutter of application just seems and is highly desirable to, and the technical barrier of this battery-driven endotherm knife of employing is in that: how the DC voltage of accumulator being converted to low-voltage and high-current exports, thus meeting the instructions for use of endotherm knife.
Summary of the invention
1. utility model to solve the technical problem that
The purpose of this utility model is in that to overcome the above-mentioned deficiency of prior art, the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter is provided, adopt the technical solution of the utility model, utilize circuit for power conversion that the input voltage of accumulator is converted to low-voltage, high-current output, achieve the direct current supply of endotherm knife, make endotherm knife lightly portable, overcome the use limitation of rope endotherm knife, have safe and reliable, electric energy conversion heating efficiency high simultaneously.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that this utility model provides is:
The Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, including accumulator, control circuit, mu balanced circuit, power conditioning circuitry, current detection circuit, drive circuit and circuit for power conversion, described control circuit is connected with circuit for power conversion by drive circuit, described accumulator connects endotherm knife blade by circuit for power conversion, the signal of telecommunication is fed back to control circuit by current detection circuit by described circuit for power conversion, described accumulator is connected with control circuit through mu balanced circuit, described power conditioning circuitry is connected with control circuit, and control circuit gathers the signal of telecommunication of power conditioning circuitry and current detection circuit, and pass to circuit for power conversion by drive circuit, the input voltage of accumulator is converted to low-voltage, high-current output, generate heat for endotherm knife blade.
Further, described circuit for power conversion is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, the first described switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of described switching tube Q is connected with the anode of diode D, and the drain electrode of switching tube Q is connected with the negative electrode of diode D；The drain electrode of the first described switching tube circuit and the drain electrode of second switch pipe circuit connect the two ends of the first armature winding Np1 of magnetic transformer respectively, the source electrode of the first switching tube circuit and the source electrode of second switch pipe circuit connect the two ends of the second armature winding Np2 of magnetic transformer respectively, the grid of each switching tube Q is all connected with drive circuit, and first switching tube circuit drain electrode and the source electrode of second switch pipe circuit be connected with accumulator respectively, the secondary windings Ns of magnetic transformer connects endotherm knife blade.
Further, it is additionally provided with electric capacity C11 between source electrode and the drain electrode of second switch pipe circuit of the first described switching tube circuit.
Further, described circuit for power conversion is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, the first described switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of described switching tube Q is connected with the anode of diode D, and the drain electrode of switching tube Q is connected with the negative electrode of diode D；The source electrode of the first described switching tube circuit is connected with the source electrode of second switch pipe circuit, the drain electrode of the first described switching tube circuit is connected with one end of the first armature winding Np1 of magnetic transformer, the drain electrode of described second switch pipe circuit is connected with one end of the second armature winding Np2 of magnetic transformer, the other end of the first armature winding Np1 and the second armature winding Np2 of magnetic transformer is connected, the grid of each switching tube Q is all connected with drive circuit, and the secondary windings Ns of magnetic transformer connects endotherm knife blade.
Further, the core material of described magnetic transformer is ferrite or amorphous or crystallite or nano crystal soft magnetic material.
Further, the input voltage of described accumulator is 9～17VDC or 18～30VDC or 32～42VDC, and the output voltage of described circuit for power conversion is 0.5～3V.
3. beneficial effect
The technical scheme adopting this utility model to provide, compared with existing known technology, has the advantages that
(1) Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, it utilizes circuit for power conversion that the input voltage of accumulator is converted to low-voltage, high-current output, achieve the direct current supply of endotherm knife, make endotherm knife lightly portable, overcome the use limitation of rope endotherm knife, have safe and reliable, electric energy conversion heating efficiency high simultaneously；
(2) Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, its circuit for power conversion is Push-Pull power change-over circuit, and circuit structure is simple, and transformer core utilization rate is high, and conduction loss is little, it is adaptable to the occasion of low-voltage, high-current；
(3) Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, it is additionally provided with electric capacity C11 between source electrode and the drain electrode of second switch pipe circuit of its first switching tube circuit, making circuit for power conversion is push-pull ortho-exciting circuit for power conversion, circuit is more stable, and energy conversion efficiency is higher；
(4) Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, the core material of its magnetic transformer is ferrite or amorphous or crystallite or nano crystal soft magnetic material, amorphous or crystallite or nano crystal soft magnetic material is adopted to make transformator, the loss of transformator is little, improve the efficiency of endotherm knife, reduce the additional energy of endotherm knife；
(5) Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, the input voltage of its accumulator is 9～17VDC or 18～30VDC or 32～42VDC, the output voltage of circuit for power conversion is 0.5～3V, the endotherm knife being applicable to various power uses, and it is output as low pressure, use safer.
Accompanying drawing explanation
Fig. 1 is the Circuits System schematic diagram of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model；
Fig. 2 is the circuit structure diagram of a kind of circuit for power conversion in this utility model；
Fig. 3 is the circuit structure diagram of the current detection circuit in this utility model and power conditioning circuitry；
Fig. 4 is the circuit structure diagram of the control circuit in this utility model, mu balanced circuit and drive circuit；
Fig. 5 is the circuit structure diagram of a kind of Push-Pull power change-over circuit of this utility model embodiment 1；
Fig. 6 is the circuit structure diagram of a kind of push-pull ortho-exciting circuit for power conversion of this utility model embodiment 2；
Fig. 7 is the circuit structure diagram of a kind of Push-Pull power change-over circuit of this utility model embodiment 3.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with the accompanying drawings and embodiments this utility model is described in detail.
Embodiment 1
Shown in Fig. 1, a kind of Circuits System of the handheld portable low-voltage direct electric heating cutter of the present embodiment, including accumulator, control circuit, mu balanced circuit, power conditioning circuitry, current detection circuit, drive circuit and circuit for power conversion, control circuit is connected with circuit for power conversion by drive circuit, accumulator connects endotherm knife blade by circuit for power conversion, the signal of telecommunication is fed back to control circuit by current detection circuit by circuit for power conversion, accumulator is connected with control circuit through mu balanced circuit, power conditioning circuitry is connected with control circuit, and control circuit gathers the signal of telecommunication of power conditioning circuitry and current detection circuit, and pass to circuit for power conversion by drive circuit, the input voltage of accumulator is converted to low-voltage, high-current output, generate heat for endotherm knife blade.A kind of Circuits System of the handheld portable low-voltage direct electric heating cutter of the present embodiment, utilize circuit for power conversion that the input voltage of accumulator is converted to low-voltage, high-current output, achieve the direct current supply of endotherm knife, make endotherm knife lightly portable, overcome the use limitation of rope endotherm knife, have safe and reliable, electric energy conversion heating efficiency high simultaneously.
As shown in Figure 2 and Figure 5, circuit for power conversion in the present embodiment is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, first switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of switching tube Q is connected with the anode of diode D, and the drain electrode of switching tube Q is connected with the negative electrode of diode D；The drain electrode of the first switching tube circuit and the drain electrode of second switch pipe circuit connect the two ends of the first armature winding Np1 of magnetic transformer respectively, the source electrode of the first switching tube circuit and the source electrode of second switch pipe circuit connect the two ends of the second armature winding Np2 of magnetic transformer respectively, the grid of each switching tube Q is all connected with drive circuit, and first switching tube circuit drain electrode and the source electrode of second switch pipe circuit be connected with accumulator BT respectively, the secondary windings Ns of magnetic transformer connects endotherm knife blade.Specifically in the present embodiment, as shown in Figure 2, first switching tube circuit includes diode D11, switching tube Q1 parallel with one another and switching tube Q3, the drain electrode of switching tube Q1 and switching tube Q3 is connected with the negative electrode of diode D11, the source electrode of switching tube Q1 and switching tube Q3 is connected with the anode of diode D11, and the grid NET-Q3 of the grid NET-Q1 and switching tube Q3 of switching tube Q1 is for being connected with drive circuit；Second switch pipe circuit includes diode D10, switching tube Q2 parallel with one another and switching tube Q4, the drain electrode of switching tube Q2 and switching tube Q4 is connected with the negative electrode of diode D10, the source electrode of switching tube Q2 and switching tube Q4 is connected with the anode of diode D10, and the grid NET-Q4 of the grid NET-Q2 and switching tube Q4 of switching tube Q2 is for being connected with drive circuit.Adopting above-mentioned Push-Pull power change-over circuit, circuit structure is simple, and transformer core utilization rate is high, and conduction loss is little, it is adaptable to the occasion of low-voltage, high-current.
Shown in hookup 2, circuit for power conversion and accumulator BT both positive and negative polarity junction are respectively equipped with current detecting point A and current detecting point B, are used for connecting current detection circuit；Accumulator BT is also in parallel with electric capacity C20, C3 and C19, C1 respectively, and is in series with fuse FUSE and bar magnet inductance L5.Fig. 3 is the circuit structure diagram of the current detection circuit in the present embodiment and power conditioning circuitry, Fig. 4 is the control circuit in the present embodiment, the circuit structure diagram of mu balanced circuit and drive circuit, by this specifically control circuit, mu balanced circuit, drive circuit, current detection circuit and power conditioning circuitry access the Circuits System that above-mentioned circuit for power conversion constitutes the handheld portable low-voltage direct electric heating cutter of the present embodiment, in this Circuits System, the input voltage of accumulator is 9～17VDC or 18～30VDC or 32～42VDC, the output voltage of circuit for power conversion is 0.5～3V, the endotherm knife being applicable to various power uses, and it is output as low pressure, use safer.Further, in the present embodiment, the core material of magnetic transformer is ferrite or amorphous or crystallite or nano crystal soft magnetic material, when adopting amorphous or crystallite or nano crystal soft magnetic material makes transformator, the loss of transformator is little, improves the efficiency of endotherm knife, reduces the additional energy of endotherm knife.
Embodiment 2
A kind of Circuits System of the handheld portable low-voltage direct electric heating cutter of the present embodiment, its basic structure is with embodiment 1, it is different in that: as shown in Figure 6, it is additionally provided with electric capacity C11 between source electrode and the drain electrode of second switch pipe circuit of the first switching tube circuit in the present embodiment, Push-Pull power change-over circuit in embodiment 1 is converted to push-pull ortho-exciting circuit for power conversion, making Circuits System more stable, energy conversion efficiency is higher.
Embodiment 3
A kind of Circuits System of the handheld portable low-voltage direct electric heating cutter of the present embodiment, its basic structure is with embodiment 1, it is different in that: as shown in Figure 7, circuit for power conversion in the present embodiment is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, first switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of switching tube Q is connected with the anode of diode D, the drain electrode of switching tube Q is connected with the negative electrode of diode D；The source electrode of the first switching tube circuit is connected with the source electrode of second switch pipe circuit, the drain electrode of the first switching tube circuit is connected with one end of the first armature winding Np1 of magnetic transformer, the drain electrode of second switch pipe circuit is connected with one end of the second armature winding Np2 of magnetic transformer, the other end of the first armature winding Np1 and the second armature winding Np2 of magnetic transformer is connected, the grid of each switching tube Q is all connected with drive circuit, and the secondary windings Ns of magnetic transformer connects endotherm knife blade.Specifically, first switching tube circuit includes diode D11, switching tube Q1 parallel with one another and switching tube Q3, the drain electrode of switching tube Q1 and switching tube Q3 is connected with one end of the second armature winding Np2 of magnetic transformer after being connected with the negative electrode of diode D11, the source electrode of switching tube Q1 and switching tube Q3 is connected with the anode of diode D11 and connects the grid NET-Q3 of the grid NET-Q1 and switching tube Q3 of accumulator BT, switching tube Q1 for being connected with drive circuit；Second switch pipe circuit includes diode D10, switching tube Q2 parallel with one another and switching tube Q4, the drain electrode of switching tube Q2 and switching tube Q4 is connected with one end of the first armature winding Np1 of magnetic transformer after being connected with the negative electrode of diode D10, the source electrode of switching tube Q2 and switching tube Q4 is connected with the anode of diode D11 after being connected with the anode of diode D10, the grid NET-Q4 of the grid NET-Q2 and switching tube Q4 of switching tube Q2 is for being connected with drive circuit, and the secondary windings Ns of magnetic transformer connects endotherm knife blade.
The Circuits System of a kind of handheld portable low-voltage direct electric heating cutter of the present utility model, it utilizes circuit for power conversion that the input voltage of accumulator is converted to low-voltage, high-current output, achieve the direct current supply of endotherm knife, make endotherm knife lightly portable, overcome the use limitation of rope endotherm knife, have safe and reliable, electric energy conversion heating efficiency high simultaneously；Use push-pull ortho-exciting circuit, circuit structure is simple, transformer core utilization rate is high, and conduction loss is little, it is adaptable to the occasion of low-voltage, high-current, and circuit is more stable, energy conversion efficiency is higher, and the core material of magnetic transformer adopts amorphous or crystallite or nano crystal soft magnetic material to make transformator, and the loss of transformator is little, improve the efficiency of endotherm knife, reduce the energy consumption of endotherm knife.
Below schematically this utility model and embodiment thereof being described, this description does not have restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.So, if those of ordinary skill in the art is enlightened by it, when creating objective without departing from this utility model, without creatively designing the frame mode similar to this technical scheme and embodiment, protection domain of the present utility model all should be belonged to.
Claims (6)
1. the Circuits System of a handheld portable low-voltage direct electric heating cutter, it is characterized in that: include accumulator, control circuit, mu balanced circuit, power conditioning circuitry, current detection circuit, drive circuit and circuit for power conversion, described control circuit is connected with circuit for power conversion by drive circuit, described accumulator connects endotherm knife blade by circuit for power conversion, the signal of telecommunication is fed back to control circuit by current detection circuit by described circuit for power conversion, described accumulator is connected with control circuit through mu balanced circuit, described power conditioning circuitry is connected with control circuit, and control circuit gathers the signal of telecommunication of power conditioning circuitry and current detection circuit, and pass to circuit for power conversion by drive circuit, the input voltage of accumulator is converted to low-voltage, high-current output, generate heat for endotherm knife blade.
2. the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter according to claim 1, it is characterized in that: described circuit for power conversion is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, the first described switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of described switching tube Q is connected with the anode of diode D, and the drain electrode of switching tube Q is connected with the negative electrode of diode D；The drain electrode of the first described switching tube circuit and the drain electrode of second switch pipe circuit connect the two ends of the first armature winding Np1 of magnetic transformer respectively, the source electrode of the first switching tube circuit and the source electrode of second switch pipe circuit connect the two ends of the second armature winding Np2 of magnetic transformer respectively, the grid of each switching tube Q is all connected with drive circuit, and first switching tube circuit drain electrode and the source electrode of second switch pipe circuit be connected with accumulator respectively, the secondary windings Ns of magnetic transformer connects endotherm knife blade.
3. the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter according to claim 2, it is characterised in that: it is additionally provided with electric capacity C11 between source electrode and the drain electrode of second switch pipe circuit of the first described switching tube circuit.
4. the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter according to claim 1, it is characterized in that: described circuit for power conversion is Push-Pull power change-over circuit, this Push-Pull power change-over circuit includes the first switching tube circuit, second switch pipe circuit and magnetic transformer, the first described switching tube circuit and second switch pipe circuit all include a parallel with one another diode D and one and above switching tube Q, the source electrode of described switching tube Q is connected with the anode of diode D, and the drain electrode of switching tube Q is connected with the negative electrode of diode D；The source electrode of the first described switching tube circuit is connected with the source electrode of second switch pipe circuit, the drain electrode of the first described switching tube circuit is connected with one end of the first armature winding Np1 of magnetic transformer, the drain electrode of described second switch pipe circuit is connected with one end of the second armature winding Np2 of magnetic transformer, the other end of the first armature winding Np1 and the second armature winding Np2 of magnetic transformer is connected, the grid of each switching tube Q is all connected with drive circuit, and the secondary windings Ns of magnetic transformer connects endotherm knife blade.
5. the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter according to claim 2 to 4 any one, it is characterised in that: the core material of described magnetic transformer is ferrite or amorphous or crystallite or nano crystal soft magnetic material.
6. the Circuits System of a kind of handheld portable low-voltage direct electric heating cutter according to claim 5, it is characterized in that: the input voltage of described accumulator is 9～17VDC or 18～30VDC or 32～42VDC, the output voltage of described circuit for power conversion is 0.5～3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081656.7U CN205356157U (en) | 2015-12-21 | 2015-12-21 | Circuit system of handheld hot sword of portable low -voltage direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081656.7U CN205356157U (en) | 2015-12-21 | 2015-12-21 | Circuit system of handheld hot sword of portable low -voltage direct current |
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| Publication Number | Publication Date |
|---|---|
| CN205356157U true CN205356157U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521081656.7U Active CN205356157U (en) | 2015-12-21 | 2015-12-21 | Circuit system of handheld hot sword of portable low -voltage direct current |
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| CN (1) | CN205356157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375781A (en) * | 2015-12-21 | 2016-03-02 | 常州市肯迪电器制造有限公司 | Circuit system of handheld portable low-voltage DC endotherm knife |
-
2015
- 2015-12-21 CN CN201521081656.7U patent/CN205356157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375781A (en) * | 2015-12-21 | 2016-03-02 | 常州市肯迪电器制造有限公司 | Circuit system of handheld portable low-voltage DC endotherm knife |
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