CN210899743U - Current sampling resistor simplifying circuit of solar lamp controller - Google Patents
Current sampling resistor simplifying circuit of solar lamp controller Download PDFInfo
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- CN210899743U CN210899743U CN201921639466.0U CN201921639466U CN210899743U CN 210899743 U CN210899743 U CN 210899743U CN 201921639466 U CN201921639466 U CN 201921639466U CN 210899743 U CN210899743 U CN 210899743U
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Abstract
The utility model discloses a circuit is simplified to solar lamp controller's electric current sampling resistor, including charge control circuit, photovoltaic input interface circuit, LED lamp pearl load circuit, battery B1, electric current sampling resistance RCS1 and LED load switch control circuit, photovoltaic input circuit and battery B1 all with the charge control circuit electricity is connected, photovoltaic input circuit, battery B1 and LED load switch control circuit all are connected with electric current sampling resistance RCS1 electricity, battery B1 and LED load switch control circuit all with LED lamp pearl load circuit electricity is connected. The utility model discloses circuit structure is comparatively simple, the cost of manufacture is low to occupation space in the PCB board is less.
Description
Technical Field
The utility model relates to a solar lamp technical field, in particular to solar lamp controller's current sampling resistance simplifies circuit.
Background
In the application field of solar LED lamps, a controller in a product needs to detect a charging current and a discharging current of a storage battery of the entire system. In a traditional detection mode, a detection resistor with a smaller resistance value is respectively connected in series with a charging control circuit and an LED lamp bead load circuit, and the current of two loops is calculated by detecting the voltage on the resistor, as shown in fig. 1, a schematic circuit diagram of a detection circuit of an existing solar controller is shown. SU + and SU-in fig. 1 are photovoltaic solar cell interfaces, B1 is a storage battery of the system, M1 is a charging control switch tube, M2 is a discharging control switch tube, RCS1 is a charging current sampling resistor, RCS2 is a discharging current sampling resistor, M1 is turned on during charging, current flows in from SU +, flows through the positive electrodes of M1, D1 and B1, the negative electrode of B1 and RCS1 and then returns to SU-, voltage proportional to the charging current is generated on RCS1, and the voltage is read out through a CS _ CHARGE terminal to obtain the value of the charging current. In the discharging process, current flows out from the positive electrode of the B1, flows through LED loads such as the LED1, the LED2, the LED3 and the like, the M2, the RCS2 and the RCS1 and then flows back to the negative electrode of the B1, a voltage value which is in direct proportion to the discharging current is generated on the RCS2 in the process, and the voltage value can be converted into a discharging current value by reading the value from a CS _ LIGHT terminal. However, in practical applications, the current sampling resistors RCS1 and RCS2 are alloy resistors with relatively high precision, which are relatively expensive and account for a certain proportion of cost, and thus have relatively high manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a solar lamp controller's electric current sampling resistor simplifies circuit, and circuit structure is comparatively simple, the cost of manufacture is low, occupation space in the PCB board is less.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a circuit is simplified to solar lamp controller's electric current sampling resistor, includes charge control circuit, photovoltaic input interface circuit, LED lamp pearl load circuit, battery B1, electric current sampling resistor RCS1 and LED load on-off control circuit, photovoltaic input circuit and battery B1 all with the charge control circuit electricity is connected, photovoltaic input circuit, battery B1 and LED load on-off control circuit all are connected with electric current sampling resistor RCS1 electricity, battery B1 and LED load on-off control circuit all with LED lamp pearl load circuit electricity is connected.
Preferably, the LED load switch control circuit includes a resistor R8, a resistor R9, a resistor R10, a capacitor C6, a terminal CS _ CHARGE, and a terminal CS _ LIGHT, one end of the resistor R8 is connected to the other end of the current sampling resistor RCS1, the other ends of the resistor R8, the resistor R9, and the resistor R10 are all connected to one end of the capacitor C6, the other end of the resistor R9 is connected to the terminal CS _ LIGHT, the other end of the resistor R10 is connected to the terminal CS _ CHARGE, and the capacitor C6 is grounded.
Preferably, the current output end of the photovoltaic input interface circuit is connected to the current input end of the charge control circuit, the current output end of the charge control circuit and the current output end of the current sampling resistor RCS1 are both connected to the anode of the battery B1, and the cathode of the battery B1 and one end of the current sampling resistor RCS1 are both grounded.
Preferably, the photovoltaic input interface circuit comprises a photovoltaic solar cell interface SU +, a photovoltaic solar cell interface SU-, the charging control circuit comprises a charging control switch tube M1, a diode D1, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a triode Q3, one end of the photovoltaic solar cell interface SU + and one end of the resistor R1 are both connected with the source electrode of the charging control switch tube M1, the drain of the charging control switch tube M1 is connected with the anode of the diode D1, the gate of the charging control switch tube M1 is connected with one end of the resistor R3, the other end of the resistor R1 and the other end of the resistor R3 are both connected with one end of a resistor R4, the other end of the resistor R4 is connected with the collector of a triode Q3, the base electrode of the triode Q3 and one end of the resistor R5 are both connected with one end of the resistor R6, and the other end of the resistor R6 and the emitter electrode of the triode Q3 are both grounded.
Preferably, the photovoltaic solar cell interface SU-is connected to the other end of the current sampling resistor RCS 1.
Preferably, the LED lamp bead load circuit includes a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3, a charge control switch tube M2, a resistor R2 and a resistor R7, an anode of the light emitting diode LED1, an anode of the light emitting diode LED2 and an anode of the light emitting diode LED3 are all connected to an anode of the battery B1, a cathode of the light emitting diode LED1, a cathode of the light emitting diode LED2 and a cathode of the light emitting diode LED3 are all connected to a drain of the charge control switch tube M2, a gate of the charge control switch tube M2 and one end of the resistor R2 are all connected to one end of the resistor R7, and a source of the charge control switch tube M2 and the other end of the resistor R2 are all connected to the other end of the current sampling resistor RCS 1.
Adopt above-mentioned technical scheme, the utility model provides a pair of circuit is simplified to solar lamp controller's current sampling resistor, photovoltaic input circuit and battery B1 in this circuit is simplified to current sampling resistor all are connected with the charging control circuit electricity, photovoltaic input circuit, battery B1 and LED load switch control circuit all are connected with current sampling resistor RCS1 electricity, this battery B1 and LED load switch control circuit all LED lamp pearl load circuit electricity are connected, produce the voltage signal of burden from top to bottom on this current sampling resistor RCS1 at the charging process charging current, it represents charging current's size, it is negative polarity voltage for signal ground, read negative polarity voltage value in this LED load switch control circuit, can obtain charging current's value; in the discharging process, the discharging current can generate voltages with upper negative and lower positive on the current sampling resistor RCS1, the voltage is a positive voltage signal relative to the signal ground, the positive voltage signal is read from the LED load switch control circuit, and the value of the discharging current can be obtained, so that the charging and discharging current is sampled by using one current sampling resistor RCS1, the use number of components is greatly reduced, the price is low, the production and manufacturing cost is reduced, and the occupied space of the current sampling resistor simplified circuit on a PCB is reduced.
Drawings
FIG. 1 is a schematic circuit diagram of a conventional solar controller detection circuit;
FIG. 2 is a block diagram of the present invention;
FIG. 3 is a schematic circuit diagram of the present invention;
in the figure, the system comprises a charging control circuit 1, an LED lamp bead load circuit 2, a storage battery B1, an RCS1, a current sampling resistor, an LED load switch control circuit 3, an LED load 4 and a photovoltaic cell 5.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 2, in the structural block diagram of the present invention, the current sampling resistor simplified circuit of the solar lamp controller includes a charging control circuit 1, a photovoltaic input interface circuit 2, an LED lamp bead load circuit 4, a battery B1, a current sampling resistor RCS1, and an LED load switch control circuit 3, the photovoltaic input circuit 2 and the storage battery B1 are all electrically connected with the charging control circuit 1, the photovoltaic input circuit 2, the storage battery B1 and the LED load switch control circuit 3 are all electrically connected with the current sampling resistor RCS1, the storage battery B1 and the LED load switch control circuit 3 are both electrically connected with the LED lamp bead load circuit 4, the utility model, through the careful adjustment of the circuit structure of the original solar controller, considering that the solar LED lamp does not need to be charged and discharged simultaneously, after the smart matching, the current detection task of charging and discharging of the solar LED lamp can be completed only by one current sampling resistor.
Specifically, fig. 3 is a schematic circuit diagram of the present invention, with reference to fig. 2 and fig. 3, the charging control circuit 1 includes a charging control switch tube M1, a diode D1, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, and a transistor Q3, the photovoltaic input interface circuit 2 includes a photovoltaic solar cell interface SU +, a photovoltaic solar cell interface SU-, the LED load switch control circuit 3 includes a resistor R8, a resistor R9, a resistor R10, a capacitor C6, a terminal CS _ CHARGE, and a terminal CS _ LIGHT, the LED lamp bead load circuit 4 includes a LIGHT emitting diode LED1, a LIGHT emitting diode LED2, a LIGHT emitting diode LED3, a charging control switch tube M2, a resistor R2, and a resistor R7, one end of the resistor R8 is connected to the other end of the current sampling resistor RCS1, the other end of the resistor R8, one end of the resistor R9, and one end of the resistor R6867 are connected to one end of the capacitor C6, and the other end of the resistor R36lit 9 is connected to the other end of the resistor R36, the other end of the resistor R10 is connected to the terminal CS _ CHARGE, and the capacitor C6 is grounded; the current output end of the photovoltaic input interface circuit 2 is connected with the current input end of the charging control circuit, the current output end of the charging control circuit 1 and the current output end of the current sampling resistor RCS1 are both connected with the anode of the storage battery B1, and the cathode of the storage battery B1 and one end of the current sampling resistor RCS1 are both grounded; one end of the photovoltaic solar cell interface SU + and one end of the resistor R1 are both connected with the source of a charging control switch tube M1, the drain of the charging control switch tube M1 is connected with the anode of a diode D1, the gate of the charging control switch tube M1 is connected with one end of a resistor R3, the other end of the resistor R1 and the other end of the resistor R3 are both connected with one end of a resistor R4, the other end of the resistor R4 is connected with the collector of a triode Q3, the base of the triode Q3 and one end of the resistor R5 are both connected with one end of a resistor R6, and the other end of the resistor R6 and the emitter of the triode Q3 are both grounded; the photovoltaic solar cell interface SU-is connected with the other end of the current sampling resistor RCS 1; the anode of the light-emitting tube LED1, the anode of the light-emitting tube LED2 and the anode of the light-emitting tube LED3 are all connected with the anode of the battery B1, the cathode of the light-emitting tube LED1, the cathode of the light-emitting tube LED2 and the cathode of the light-emitting tube LED3 are all connected with the drain of the charge control switch tube M2, the gate of the charge control switch tube M2 and one end of the resistor R2 are all connected with one end of the resistor R7, and the source of the charge control switch tube M2 and the other end of the resistor R2 are all connected with the other end of the current sampling resistor RCS 1. It is understood that the charging control switch M1 and the charging control switch M2 are both field effect transistors. The current sampling resistor RCS1 is a charging current sampling resistor, and also serves as a discharging current sampling resistor, and the current path of the current sampling resistor simplifying circuit in the charging process is as follows: the charging current flows out of the photovoltaic solar cell interface SU +, flows through the charging control switch tube M1, the diode D1, the anode of the storage battery B1 and the cathode of the storage battery B1 and then flows back to the photovoltaic solar cell interface SU-, and in the process, a voltage signal which represents the magnitude of the charging current and is negative polarity voltage relative to the signal ground is generated on the current sampling resistor RCS1, and a negative polarity voltage value is read from a CS _ CHARGE terminal, so that the value of the charging current can be obtained; the discharge current path in the discharge process is as follows: the discharge current flows out from the positive electrode of the storage battery B1, passes through the luminotron LEDs (comprising luminotron LED1, luminotron LED3 and luminotron LED3), the charge control switch tube M2 and the current sampling RCS1 and then returns to the negative electrode of the storage battery B1, in the process, the current generates voltages of upper negative and lower positive on the current sampling resistor RCS1, the voltage is a positive voltage signal relative to the signal ground, and the positive voltage signal is read from the CS _ LIGHT terminal, so that the value of the discharge current can be obtained. Thereby completing the sampling of the charged and discharged current with 1 current sampling resistor RCS 1. Since in a system of solar powered light fixtures, charging and discharging do not need to be done simultaneously, there is no conflict in the operating logic.
It can be understood that the utility model relates to a rationally, the structure is unique, has following characteristics: (1) the circuit structure is simpler, the material consumption quantity of the product is reduced, so that the use quantity of components is greatly reduced, the price is lower, the production cost is reduced, and the product cost is reduced; (2) the space occupation of the PCB is reduced, the volume of the current sampling resistor RCS1 is smaller, and the space occupation of the current sampling resistor simplifying circuit on the PCB is reduced.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
1. The utility model provides a circuit is simplified to solar lamp controller's current sampling resistor, includes charge control circuit, photovoltaic input interface circuit, LED lamp pearl load circuit and battery B1, its characterized in that: still include current sampling resistance RCS1 and LED load switch control circuit, photovoltaic input circuit and battery B1 all with the control circuit electricity that charges is connected, photovoltaic input circuit, battery B1 and LED load switch control circuit all are connected with current sampling resistance RCS1 electricity, battery B1 and LED load switch control circuit all with LED lamp pearl load circuit electricity is connected.
2. The current-sampling resistor reduction circuit of claim 1, wherein: the LED load switch control circuit comprises a resistor R8, a resistor R9, a resistor R10, a capacitor C6, a terminal CS _ CHARGE and a terminal CS _ LIGHT, wherein one end of the resistor R8 is connected with the other end of the current sampling resistor RCS1, the other end of the resistor R8, one end of the resistor R9 and one end of the resistor R10 are connected with one end of a capacitor C6, the other end of the resistor R9 is connected with the terminal CS _ LIGHT, the other end of the resistor R10 is connected with the terminal CS _ CHARGE, and the capacitor C6 is grounded.
3. The current-sampling resistor reduction circuit of claim 1, wherein: the current output end of the photovoltaic input interface circuit is connected with the current input end of the charging control circuit, the current output end of the charging control circuit and the current output end of the current sampling resistor RCS1 are both connected with the anode of the storage battery B1, and the cathode of the storage battery B1 and one end of the current sampling resistor RCS1 are both grounded.
4. The current-sampling resistor reduction circuit of claim 1, wherein: the photovoltaic input interface circuit comprises a photovoltaic solar cell interface SU + and a photovoltaic solar cell interface SU-, the charging control circuit comprises a charging control switch tube M1, a diode D1, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a triode Q3, one end of the photovoltaic solar cell interface SU + and one end of the resistor R1 are both connected with the source electrode of the charging control switch tube M1, the drain of the charging control switch tube M1 is connected with the anode of the diode D1, the gate of the charging control switch tube M1 is connected with one end of the resistor R3, the other end of the resistor R1 and the other end of the resistor R3 are both connected with one end of a resistor R4, the other end of the resistor R4 is connected with the collector of a triode Q3, the base electrode of the triode Q3 and one end of the resistor R5 are both connected with one end of the resistor R6, and the other end of the resistor R6 and the emitter electrode of the triode Q3 are both grounded.
5. The current-sampling resistor reduction circuit of claim 4, wherein: the photovoltaic solar cell interface SU-is connected with the other end of the current sampling resistor RCS 1.
6. The current-sampling resistor reduction circuit of claim 1, wherein: the LED lamp bead load circuit comprises a light emitting tube LED1, a light emitting tube LED2, a light emitting tube LED3, a charge control switch tube M2, a resistor R2 and a resistor R7, wherein the anode of the light emitting tube LED1, the anode of the light emitting tube LED2 and the anode of the light emitting tube LED3 are all connected with the anode of the storage battery B1, the cathode of the light emitting tube LED1, the cathode of the light emitting tube LED2 and the cathode of the light emitting tube LED3 are all connected with the drain of the charge control switch tube M2, the grid of the charge control switch tube M2 and one end of the resistor R2 are all connected with one end of the resistor R7, and the source of the charge control switch tube M2 and the other end of the resistor R2 are all connected with the other end of the current sampling resistor RCS 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639466.0U CN210899743U (en) | 2019-09-27 | 2019-09-27 | Current sampling resistor simplifying circuit of solar lamp controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639466.0U CN210899743U (en) | 2019-09-27 | 2019-09-27 | Current sampling resistor simplifying circuit of solar lamp controller |
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| Publication Number | Publication Date |
|---|---|
| CN210899743U true CN210899743U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921639466.0U Active CN210899743U (en) | 2019-09-27 | 2019-09-27 | Current sampling resistor simplifying circuit of solar lamp controller |
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| CN (1) | CN210899743U (en) |
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- 2019-09-27 CN CN201921639466.0U patent/CN210899743U/en active Active
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