CN218771368U - Total powerstation lithium battery solar charger circuit and device - Google Patents

Abstract

The utility model provides a total powerstation lithium cell solar charger circuit and device relates to the charger circuit field. The lithium battery temperature and current detection system comprises a single chip microcomputer circuit, a storage battery charging circuit, a DC-DC circuit, a first voltage and current detection circuit, a second voltage and current detection circuit and a temperature detection circuit which are connected with the single chip microcomputer circuit respectively, and further comprises a storage battery module, wherein the storage battery module is further connected with the storage battery charging circuit, the DC-DC circuit, the first voltage and current detection circuit and the temperature detection circuit respectively, the output end of the second voltage and current detection circuit is further used for being connected with an external total station lithium battery, and the input end of the temperature detection circuit is further connected with the external total station lithium battery. The circuit structure is optimized, so that the influence of external factors on the circuit can be reduced, and the circuit can output the charging voltage with the maximum power all the time.

Description

Total powerstation lithium battery solar charger circuit and device

Technical Field

The utility model relates to a charger circuit field particularly, relates to a total powerstation lithium cell solar charger circuit and device.

Background

The total station has wide application range in the field of construction engineering and huge market demand. The measurement operation is mostly outdoor operation, but the measurement operation is often influenced because the instrument cannot normally work due to the exhaustion of the electric energy of the battery. In order to meet the requirements of people who work outdoors or travel outdoors for a long time, people invent a solar charger, but the existing solar charger has the following problems: (1) The utilization rate of solar energy is not high, namely, the solar energy is greatly influenced by natural conditions, and the maximum power output cannot be realized in many times; (2) If the load changes suddenly, can pull down solar panel's voltage suddenly, lead to the unable normal operating of singlechip, even if solar panel normally produces the electricity this moment, solar charger also can't output energy.

Therefore, in the patent document with the application number of CN201910570113.8, a solar charger is proposed, which specifically comprises an Mos driving module, an output module, a current detection module, a single chip microcomputer, an output voltage detection module, a voltage limiting module, a reset module, a solar panel voltage detection module and a power supply module; the Mos driving module is electrically connected with the output module, the voltage limiting module and the reset module respectively; the output module is respectively and electrically connected with the current detection module, the output voltage detection module and the voltage limiting module; the current detection module, the output voltage detection module, the voltage limiting module, the reset module, the solar panel voltage detection module and the power supply module are respectively and electrically connected with the single chip microcomputer. The solar energy utilization rate is improved by optimizing the circuit structure. However, the principle is that when the load is suddenly changed, or no sunlight exists, or the sunlight is blocked, the control circuit can be quickly reset through the reset module, so that the whole circuit can quickly recover to work, and the maximum power point can be found. That is, it is only when the circuit is abnormal, the circuit is reset to make it work again, and its charging efficiency is still greatly influenced by natural conditions.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned problem or solve above-mentioned problem at least partially, the embodiment of the utility model provides a total powerstation lithium cell solar charger circuit and device, through optimizing circuit structure, can reduce the influence that the circuit received external factor for guarantee that the circuit can be all the time with maximum power output charging voltage.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the application provides a total station lithium battery solar charger circuit, which comprises a single chip microcomputer circuit, a storage battery charging circuit, a storage battery module, a DC-DC circuit, a first voltage and current detection circuit, a second voltage and current detection circuit and a temperature detection circuit, wherein an input end of the storage battery charging circuit is used for being connected with an external solar battery panel, an input end of the storage battery charging circuit is further connected with the single chip microcomputer circuit, an output end of the storage battery charging circuit is connected with an external total station lithium battery through the storage battery module, the DC-DC circuit and the second voltage and current detection circuit which are sequentially connected in series, an output end of the storage battery charging circuit is further connected with the single chip microcomputer circuit through the first voltage and current detection circuit, an input end of the temperature detection circuit is connected with the storage battery module, an output end of the temperature detection circuit is connected with the chip microcomputer circuit, and an input end of the temperature detection circuit is further used for being connected with an external total station lithium battery.

Based on the first aspect the utility model discloses an in some embodiments, still include the power display circuit, the input of power display circuit links to each other with singlechip circuit.

In some embodiments of the present invention, the battery charging circuit includes a chip U4, and the single chip microcomputer circuit includes a chip U2, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R3, a resistor R4, and a resistor R5;

pin 1 and 3 of chip U4 are used for linking to each other with outside solar cell panel, pin 1 of chip U4 still links to each other with pin PB12 of chip U4 through resistance R3, pin PB12 of chip U4 links to each other with pin 3 of chip U4 through resistance R4, pin RST of chip U4 links to each other with electric capacity C2, pin RST of chip U4 passes through resistance R5 ground connection, pin XTAL2 of chip U4 links to each other with pin XTAL1 of chip U4 behind electric capacity C3 and the electric capacity C4 that connect gradually in series, pin XTAL2 of chip U4 still links to each other with pin XTAL1 of chip U4 through crystal oscillator Y1, electric capacity C3 and electric capacity C4's common terminal ground connection.

In some embodiments of the present invention, the battery module includes a battery BT2, and the DC-DC circuit includes a chip U3, a MOS transistor Q1, a MOS transistor Q2, a resistor R12, an inductor L1, a diode D1, a capacitor C7, and a button S1;

one end of a battery BT2 is connected with a pin 2 of a chip U4, the other end of the battery BT is connected with a pin 4 of the chip U4, the pin 2 of the chip U4 is connected with a pin 3 of the chip U3, the pin 4 of the chip U4 is connected with a pin 1 of the chip U3, the pin 4 of the chip U4 is used for generating a direct current power supply 5V, the direct current power supply 5V is connected with a capacitor C2, a grid electrode of the MOS tube Q1 is connected with a source electrode of the MOS tube Q1 through a resistor R12, the grid electrode of the MOS tube Q1 is also connected with a drain electrode of the MOS tube Q2, the source electrode of the MOS tube Q1 is connected with the pin 3 of the chip U3, a drain electrode of the MOS tube Q1 is connected with the pin 1 of the chip U3 through an inductor L1 and a capacitor C7 which are sequentially connected in series, a common end of the inductor L1 and the common end of the capacitor C7 are connected with an anode of a diode D1, a grid electrode of the MOS tube Q2 is connected with a pin PB13 of the chip U2, and a source electrode of the MOS tube Q2 is connected with a pin P20 of the chip U2 through a button S1.

In some embodiments of the utility model, first voltage electric current detection circuitry includes resistance R13 and resistance R11, and resistance R13's one end links to each other with MOS pipe Q1's source electrode, and the other end passes through resistance R11 and links to each other with MOS pipe Q2's source electrode, and resistance R13 and resistance R11's common port links to each other with chip U2's pin P15.

In some embodiments of the present invention, the second voltage/current detection circuit includes a voltage comparator U5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9, and a resistor R10;

pin 6 of voltage comparator U5 links to each other with pin 2 of voltage comparator U5 through resistance R10, pin 6 of voltage comparator U5 links to each other with pin P11 of chip U2, pin 2 of voltage comparator U5 links to each other with pin 3 of voltage comparator U5 through resistance R9 and resistance R8 that establish ties in proper order, resistance R8 links to each other with electric capacity C5, resistance R9 and resistance R8's common terminal links to each other with diode D1's negative pole through resistance R6 and resistance R7 that establish ties in proper order after, resistance R6 and resistance R7's common terminal passes through electric capacity C6 ground connection, resistance R6 and resistance R7's common terminal links to each other with pin P10 of chip U2, resistance R9 and resistance R8's common terminal ground connection.

The utility model discloses an in some embodiments, temperature detect circuit includes temperature sensor DS1 and resistance R2, and resistance R9 and resistance R8's common port links to each other with temperature sensor DS 1's pin GND, and temperature sensor DS 1's pin VCC links to each other through resistance R2 and temperature sensor DS 1's pin IO, and temperature sensor DS 1's pin VCC still links to each other with DC power supply 5V, and temperature sensor DS 1's pin IO links to each other with chip U2's pin P24.

In some embodiments of the present invention, the power display circuit includes a chip U1, a nixie tube DS2, a nixie tube DS3, a nixie tube DS4, a resistor R1, and a capacitor C1;

pin DIN of chip U1 is connected to pin P23 of chip U2, pin CS of chip U1 is connected to pin P22 of chip U2, pin ISET of chip U1 is connected to pin VCC of chip U1 through resistor R1, pin VCC of chip U1 is grounded through capacitor C1, pin CLK of chip U1 is connected to pin P21 of chip U2, pin SEGA of chip U1 is connected to pin a of nixie tube DS4, pin SEGF of chip U1 is connected to pin f of nixie tube DS4, pin SEGB of chip U1 is connected to pin b of nixie tube DS4, pin SEGG of chip U1 is connected to pin g of nixie tube DS4, the pin SEGC of the chip U1 is connected with a pin C of the nixie tube DS4, the pin SEGE of the chip U1 is connected with a pin e of the nixie tube DS4, the pin SEGDP of the chip U1 is connected with a pin DP of the nixie tube DS4, the pin SEGD of the chip U1 is connected with a pin d of the nixie tube DS4, the pins a, b, C, d, e, f, g and DP of the nixie tube DS2 are respectively connected with the pins a, b, C, d, e, f, g and DP of the nixie tube DS4, and the pins a, b, C, d, e, f, g and DP of the nixie tube DS3 are respectively connected with the pins a, b, C, d, e, f, g and DP of the nixie tube DS 4.

In a second aspect, an embodiment of the present application provides a total station lithium battery solar charger device, which includes a housing and a circuit board provided with any one of the total station lithium battery solar charger circuits in the first aspect, where the circuit board is disposed in the housing.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the utility model discloses a carry out topological structure to total powerstation lithium cell solar charger circuit and optimize, not only simplified the structure of circuit, be convenient for miniaturize, it is not merely can carry out restarting of circuit through the reset function that single-chip module itself possessed moreover for guarantee charging efficiency's maximize, but through the optimization of structure, make whole circuit can deal with more complicated external condition's change, be used for guaranteeing that the circuit can be with maximum power output charging voltage all the time. Therefore, the system can be used for perfectly matching the requirement of outdoor operation on charging the lithium battery of the total station.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a total station lithium battery solar charger circuit of the present invention;

fig. 2 is a schematic structural diagram of a single chip microcomputer circuit according to an embodiment of the total station lithium battery solar charger circuit of the present invention;

fig. 3 is a schematic structural diagram of a battery charging circuit, a battery module, a DC-DC circuit and a first voltage/current detection circuit according to an embodiment of the total station lithium battery solar charger circuit of the present invention;

fig. 4 is a schematic structural diagram of a second voltage and current detection circuit and a temperature detection circuit according to an embodiment of the total station lithium battery solar charger circuit of the present invention;

fig. 5 is a schematic diagram illustrating a power display circuit according to an embodiment of the total station lithium battery solar charger circuit of the present invention.

Icon: 1. a single chip circuit; 2. a battery charging circuit; 3. a battery module; 4. a DC-DC circuit; 5. a first voltage current detection circuit; 6. a second voltage current detection circuit; 7. a temperature detection circuit; 8. electric quantity display circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Examples

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with one another without conflict.

Please refer to fig. 1, the embodiment of the utility model provides a total powerstation lithium battery solar charging ware circuit, it includes single chip microcomputer circuit 1, battery charging circuit 2, battery module 3, DC-DC circuit 4, first voltage current detection circuit 5, second voltage current detection circuit 6 and temperature detection circuit 7, battery charging circuit 2's input is used for linking to each other with outside solar cell panel, battery charging circuit 2's input still links to each other with single chip microcomputer circuit 1, battery charging circuit 2's output is through the battery module 3 who establishes ties in proper order, be used for linking to each other with outside total powerstation lithium cell behind DC-DC circuit 4 and the second voltage current detection circuit 6, battery charging circuit 2's output still links to each other with single chip microcomputer circuit 1 through first voltage current detection circuit 5, temperature detection circuit 7's input links to each other with battery module 3, temperature detection circuit 7's output links to each other with the mascerating machine circuit, temperature detection circuit 7's input still is used for linking to each other with outside total powerstation lithium cell.

In the above embodiment, after the external solar cell panel converts solar energy into electric energy, the battery charging circuit 2 starts to be supplied with the original input voltage, and then the battery charging circuit 2 can preliminarily change the original input voltage into the first voltage with higher quality, and simultaneously performs charging processing on the battery module 3. Then the DC-DC circuit 4 further stabilizes the received first voltage to obtain a higher quality second voltage. And then the second voltage flows through the second voltage and current detection circuit 6 and then starts to charge the external total station lithium battery so as to realize high-quality charging of the total station lithium battery. Due to the dual voltage stabilization of the storage battery charging circuit 2 and the DC-DC circuit 4, the voltage with poor quality obtained by the conversion of the external solar panel can be converted into the second voltage with high quality, so as to improve the charging quality of the lithium battery provided to the total station, and ensure that the charging efficiency is not affected by too large natural conditions (fluctuation of the charging efficiency due to the solar panel). In addition, due to the existence of the storage battery module 3, electric energy can be stored when solar energy is sufficient, and electric energy is output outwards (the electric energy is provided for the input end of the DC-DC circuit 4) when the solar energy is insufficient, so that the effect influenced by illumination is reduced; and when the circuit fluctuates, the buffer circuit can be used as a buffer component for buffering, so that the charging abnormity caused by voltage impact is avoided. In addition, the singlechip is used for receiving input signals of the first voltage and current detection circuit 5, the second voltage and current detection circuit 6 and the temperature detection circuit and adjusting the working condition of the storage battery charging circuit 2, so that the voltage, the current or the temperature of the load can be timely adjusted when the load changes, the whole circuit can be stably and effectively operated, and the charging efficiency can be maximized by timely adjusting the discharging condition. In a word, in the above embodiment, topology optimization is performed on the total station lithium battery solar charger circuit, so that the structure of the circuit is simplified, miniaturization is facilitated, the circuit can be restarted through the reset function of the single chip module to maximize the charging efficiency, and the structure is optimized, so that the whole circuit can cope with the change of more complicated external conditions, and the circuit can output the charging voltage with the maximum power all the time.

Referring to fig. 1, in some embodiments of the present invention, the power supply further includes a power display circuit 8, and an input end of the power display circuit 8 is connected to the single chip microcomputer circuit 1.

In the above embodiment, the electric quantity display circuit 8 connected to the single chip microcomputer circuit 1 is provided, so that a user can know the electric quantity condition of the total station battery clearly and timely.

Referring to fig. 2-3, in some embodiments of the present invention, the battery charging circuit 2 includes a chip U4, and the single chip microcomputer circuit 1 includes a chip U2, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R3, a resistor R4, and a resistor R5; pin 1 and 3 of chip U4 are used for linking to each other with outside solar cell panel, pin 1 of chip U4 still links to each other with pin PB12 of chip U4 through resistance R3, pin PB12 of chip U4 links to each other with pin 3 of chip U4 through resistance R4, pin RST of chip U4 links to each other with electric capacity C2, pin RST of chip U4 passes through resistance R5 ground connection, pin XTAL2 of chip U4 links to each other with pin XTAL1 of chip U4 behind electric capacity C3 and the electric capacity C4 that connect gradually in series, pin XTAL2 of chip U4 still links to each other with pin XTAL1 of chip U4 through crystal oscillator Y1, electric capacity C3 and electric capacity C4's common terminal ground connection.

In the above embodiment, the chip U4 may be an 18V/12V dc regulator chip, and the chip U2 may be a single chip of STC12C5a08AD model. The capacitor C2 and the resistor R5 jointly form a reset circuit, and the reset of the whole electric quantity can be automatically completed after the power-on. The capacitor C3, the capacitor C4 and the crystal oscillator Y1 of 11.0592MHZ form a crystal oscillator circuit to provide a required time sequence for a single chip microcomputer of STC12C5A08AD type.

Referring to fig. 3, in some embodiments of the present invention, the battery module 3 includes a battery BT2, and the DC-DC circuit 4 includes a chip U3, a MOS transistor Q1, a MOS transistor Q2, a resistor R12, an inductor L1, a diode D1, a capacitor C7, and a button S1; one end of a battery BT2 is connected with a pin 2 of a chip U4, the other end of the battery BT2 is connected with a pin 4 of the chip U4, the pin 2 of the chip U4 is connected with a pin 3 of the chip U3, the pin 4 of the chip U4 is connected with a pin 1 of the chip U3, the pin 4 of the chip U4 is used for generating a direct-current power supply 5V, the direct-current power supply 5V is connected with a capacitor C2, a grid electrode of the MOS tube Q1 is connected with a source electrode of the MOS tube Q1 through a resistor R12, the grid electrode of the MOS tube Q1 is also connected with a drain electrode of the MOS tube Q2, the source electrode of the MOS tube Q1 is connected with the pin 3 of the chip U3, a drain electrode of the MOS tube Q1 is connected with the pin 1 of the chip U3 through an inductor L1 and a capacitor C7 which are sequentially connected in series, a common end of the inductor L1 and the capacitor C7 is connected with an anode of a diode D1, a grid electrode of the MOS tube Q2 is connected with a pin PB13 of the chip U2, and a source electrode of the MOS tube Q2 is connected with a pin P20 of the chip U2 through a button S1.

In the above embodiment, the chip U2 outputs PWM with a suitable duty ratio to the MOS transistor Q2 through the pin P13 according to the current state of the total station battery, and controls the output voltage and current of the DC-DC circuit 4 by controlling on/off of the MOS transistor Q2. When the chip U2 outputs a high level to the MOS tube Q2, the MOS tube Q2 is conducted, the grid electrode of the MOS tube Q1 is grounded, and the MOS tube Q1 is conducted; on the contrary, when the chip U2 outputs a low level to the MOS tube Q2, the MOS tube Q2 is disconnected, the grid voltage of the MOS tube Q1 is consistent with the source electrode, and the MOS tube Q1 is disconnected. The capacitor C7 and the inductor L1 are used for filtering, and the diode D1 is used for preventing the current of the total station battery from flowing backwards. The chip U4 may be a 12V/5V DC regulator chip.

Referring to fig. 3, in some embodiments of the present invention, the first voltage/current detection circuit 5 includes a resistor R13 and a resistor R11, one end of the resistor R13 is connected to the source of the MOS transistor Q1, the other end is connected to the source of the MOS transistor Q2 through the resistor R11, and a common end of the resistor R13 and the resistor R11 is connected to the pin P15 of the chip U2.

In the above embodiment, the resistor R13 and the resistor R11 together constitute the first voltage/current detection circuit 5 for detecting the voltage/current of the battery module 3, which divides the voltage of the battery module 3 by the resistor R13 and the resistor R11, and then sends the voltage to the pin P15 of the chip U2 for AD conversion to detect the voltage of the battery module 3.

Referring to fig. 4, in some embodiments of the present invention, the second voltage/current detection circuit 6 includes a voltage comparator U5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9, and a resistor R10; pin 6 of voltage comparator U5 links to each other with pin 2 of voltage comparator U5 through resistance R10, pin 6 of voltage comparator U5 links to each other with pin P11 of chip U2, pin 2 of voltage comparator U5 links to each other with pin 3 of voltage comparator U5 through resistance R9 and resistance R8 that establish ties in proper order, resistance R8 links to each other with electric capacity C5, resistance R9 and resistance R8's common terminal links to each other with diode D1's negative pole through resistance R6 and resistance R7 that establish ties in proper order after, resistance R6 and resistance R7's common terminal passes through electric capacity C6 ground connection, resistance R6 and resistance R7's common terminal links to each other with pin P10 of chip U2, resistance R9 and resistance R8's common terminal ground connection.

In the above embodiment, the second voltage and current detection circuit 6 is used to detect the voltage and current of the total station lithium battery. Specifically, the second voltage and current detection circuit 6 includes a voltage detection portion composed of a capacitor C6, a resistor R6 and a resistor R7, and divides the voltage of the total station lithium battery through the resistor R6 and the resistor R7, and then sends the voltage to the pin P10 of the chip U2 for AD conversion, so as to detect the voltage of the total station lithium battery. The capacitor C6 is used for filtering, and the voltage is ensured to be stable. The second voltage and current detection circuit 6 further comprises a current detection part consisting of a voltage comparator U5, a capacitor C5, a resistor R8, a resistor R9 and a resistor R10, wherein the capacitor C5 is used for filtering, the resistor R9, the resistor R10 and the voltage comparator U5 form a voltage amplification circuit together, the voltage on the precision resistor R8 is amplified, the amplified voltage is detected by a pin P11 of the chip U2, and then the current charging current of the total station battery is calculated. That is, after the chip U2 detects the voltage and current signals of the battery module 3 and the total station lithium battery, a PWM pulse signal with a certain duty ratio is output through the pin P13 according to the received data, so as to control the DC-DC circuit 4 to output a corresponding voltage and current according to the charging characteristics of the total station lithium battery, thereby implementing four-stage charging of the total station lithium battery. It should be noted that, the battery BT1 exemplarily shown in the circuit diagram is represented as a total station lithium battery, and specifically, when the circuit of the present application is converted into an actual object, the connection relationship of the charging terminal of the total station lithium battery can be designed by referring to the connection relationship of the battery BT 1.

Illustratively, the voltage comparator U5 may be of the type OP07.

Please refer to fig. 4, in some embodiments of the present invention, the temperature detection circuit 7 includes a temperature sensor DS1 and a resistor R2, the common terminal of the resistor R9 and the resistor R8 is connected to the pin GND of the temperature sensor DS1, the pin VCC of the temperature sensor DS1 is connected to the pin vo of the resistor R2 and the temperature sensor DS1, the pin VCC of the temperature sensor DS1 is further connected to the dc power supply 5V, and the pin vo of the temperature sensor DS1 is connected to the pin P24 of the chip U2.

In the above embodiment, when the temperature sensor DS1 detects that the temperature of the total station lithium battery is too high, the charging of the total station lithium battery is directly stopped, so as to prevent the total station lithium battery from being overheated. For example, the temperature sensor DS1 may be of the type DS18B20.

Referring to fig. 5, in some embodiments of the present invention, the electric quantity display circuit 8 includes a chip U1, a nixie tube DS2, a nixie tube DS3, a nixie tube DS4, a resistor R1, and a capacitor C1; pin DIN of chip U1 is connected to pin P23 of chip U2, pin CS of chip U1 is connected to pin P22 of chip U2, pin ISET of chip U1 is connected to pin VCC of chip U1 through resistor R1, pin VCC of chip U1 is grounded through capacitor C1, pin CLK of chip U1 is connected to pin P21 of chip U2, pin SEGA of chip U1 is connected to pin a of nixie tube DS4, pin SEGF of chip U1 is connected to pin f of nixie tube DS4, pin SEGB of chip U1 is connected to pin b of nixie tube DS4, pin SEGG of chip U1 is connected to pin g of nixie tube DS4, pin SEGC of chip U1 links to each other with pin C of charactron DS4, pin SEGE of chip U1 links to each other with pin e of charactron DS4, pin SEGDP of chip U1 links to each other with pin DP of charactron DS4, pin SEGD of chip U1 links to each other with pin d of charactron DS4, pin a, b, C, d, e, f, g and DP of charactron DS2 link to each other with pin a, b, C, d, e, f, g and DP of charactron DS4 respectively, pin a, b, C, d, e, f, g and DP of charactron DS3 link to each other with pin a, b, C, d, e, f, g and DP of charactron DS4 respectively.

In the above embodiment, after the chip U2 calculates the electric quantity of the total station lithium battery, corresponding data may be input to the chip U1 through DIN, and then the control of the nixie tube DS2, the nixie tube DS3, and the nixie tube DS4 is realized to display the electric quantity condition of the total station lithium battery.

Illustratively, chip U1 may be an LED display driver chip of model MAX7219, and corresponding nixides DS2, DS3, and DS4 may be cathode nixides of model Dpy Amber-CC.

The embodiment of the utility model provides a still provide a total powerstation lithium cell solar charger device, its circuit board that includes the casing and be provided with total powerstation lithium cell solar charger, the casing is located to the circuit board.

In the above-mentioned embodiment, through the circuit board encapsulation that will be equipped with total station lithium cell solar charger circuit in the casing, make total station lithium cell solar charger device to can make things convenient for total station lithium cell solar charger's use, be convenient for when outdoor measurement operation convenient give the total station lithium cell carry out the electric quantity and supply.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The solar charger circuit for the lithium battery of the total station is characterized by comprising a single chip microcomputer circuit, a storage battery charging circuit, a storage battery module, a DC-DC circuit, a first voltage and current detection circuit, a second voltage and current detection circuit and a temperature detection circuit, wherein the input end of the storage battery charging circuit is used for being connected with an external solar battery panel, the input end of the storage battery charging circuit is further connected with the single chip microcomputer circuit, the output end of the storage battery charging circuit is used for being connected with an external total station lithium battery after passing through the storage battery module, the DC-DC circuit and the second voltage and current detection circuit which are sequentially connected in series, the output end of the storage battery charging circuit is further connected with the single chip microcomputer circuit through the first voltage and current detection circuit, the input end of the temperature detection circuit is connected with the storage battery module, the output end of the temperature detection circuit is connected with the chip microcomputer circuit, and the input end of the temperature detection circuit is further used for being connected with the external total station lithium battery.

2. The total station lithium battery solar charger circuit of claim 1, further comprising a charge display circuit, an input of said charge display circuit being connected to said single chip microcomputer circuit.

3. The total station lithium battery solar charger circuit of claim 2, wherein the battery charging circuit comprises a chip U4, and the single chip microcomputer circuit comprises a chip U2, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R3, a resistor R4, and a resistor R5;

pin 1 and 3 of chip U4 are used for linking to each other with outside solar cell panel, pin 1 of chip U4 still passes through resistance R3 with pin PB12 of chip U4 links to each other, pin PB12 of chip U4 passes through resistance R4 with pin 3 of chip U4 links to each other, pin RST of chip U4 with electric capacity C2 links to each other, pin RST of chip U4 passes through resistance R5 ground connection, pin XTAL2 of chip U4 through establish ties in proper order electric capacity C3 with behind the electric capacity C4 with pin XTAL1 of chip U4 links to each other, pin XTAL2 of chip U4 still through crystal oscillator Y1 with pin XTAL1 of chip U4 links to each other, electric capacity C3 with the common terminal ground connection of electric capacity C4.

4. The total station lithium battery solar charger circuit according to claim 3, wherein said battery module comprises battery BT2, and said DC-DC circuit comprises chip U3, MOS transistor Q1, MOS transistor Q2, resistor R12, inductor L1, diode D1, capacitor C7 and button S1;

one end of the battery BT2 is connected with a pin 2 of the chip U4, the other end of the battery BT is connected with a pin 4 of the chip U4, the pin 2 of the chip U4 is connected with a pin 3 of the chip U3, the pin 4 of the chip U4 is connected with a pin 1 of the chip U3, the pin 4 of the chip U4 is used for generating a direct-current power supply 5V, the direct-current power supply 5V is connected with the capacitor C2, a grid electrode of the MOS tube Q1 is connected with a source electrode of the MOS tube Q1 through the resistor R12, the grid electrode of the MOS tube Q1 is also connected with a drain electrode of the MOS tube Q2, the source electrode of the MOS tube Q1 is connected with the pin 3 of the chip U3, a drain electrode of the MOS tube Q1 is connected with the pin 1 of the chip U3 through the inductor L1 and the capacitor C7 which are sequentially connected in series, a common end of the inductor L1 and the capacitor C7 is connected with an anode of the diode D1, a grid electrode PB of the MOS tube Q2 is connected with a pin 13 of the chip U2, and a source electrode of the button P2 is connected with the chip P20.

5. The total station lithium battery solar charger circuit according to claim 4, wherein said first voltage and current detection circuit comprises a resistor R13 and a resistor R11, one end of said resistor R13 is connected to the source of said MOS transistor Q1, the other end is connected to the source of said MOS transistor Q2 through said resistor R11, and the common end of said resistor R13 and said resistor R11 is connected to pin P15 of said chip U2.

6. The total station lithium battery solar charger circuit according to claim 5, wherein said second voltage current detection circuit comprises a voltage comparator U5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9 and a resistor R10;

pin 6 of voltage comparator U5 passes through resistance R10 with pin 2 of voltage comparator U5 links to each other, pin 6 of voltage comparator U5 with pin P11 of chip U2 links to each other, pin 2 of voltage comparator U5 through establish ties in proper order resistance R9 with behind the resistance R8 with pin 3 of voltage comparator U5 links to each other, resistance R8 with electric capacity C5 links to each other, resistance R9 with the common terminal of resistance R8 through establish ties in proper order resistance R6 with behind the resistance R7 with the negative pole of diode D1 links to each other, resistance R6 with the common terminal of resistance R7 passes through electric capacity C6 ground connection, resistance R6 with the common terminal of resistance R7 with pin P10 of chip U2 links to each other, resistance R9 with the common terminal of resistance R8 ground connection.

7. The total station lithium battery solar charger circuit according to claim 6, wherein said temperature detection circuit comprises a temperature sensor DS1 and a resistor R2, a common terminal of said resistor R9 and said resistor R8 is connected to a pin GND of said temperature sensor DS1, a pin VCC of said temperature sensor DS1 is connected to a pin I/O of said temperature sensor DS1 through said resistor R2, a pin VCC of said temperature sensor DS1 is further connected to said DC power supply 5V, and a pin I/O of said temperature sensor DS1 is connected to a pin P24 of said chip U2.

8. The total station lithium battery solar charger circuit of claim 7, wherein said charge display circuit comprises a chip U1, a nixie tube DS2, a nixie tube DS3, a nixie tube DS4, a resistor R1 and a capacitor C1;

the pin DIN of the chip U1 is connected with the pin P23 of the chip U2, the pin CS of the chip U1 is connected with the pin P22 of the chip U2, the pin ISET of the chip U1 is connected with the pin VCC of the chip U1 through the resistor R1, the pin VCC of the chip U1 is grounded through the capacitor C1, the pin CLK of the chip U1 is connected with the pin P21 of the chip U2, the pin SEGA of the chip U1 is connected with the pin a of the nixie tube DS4, the pin SEGF of the chip U1 is connected with the pin f of the nixie tube DS4, the pin SEGB of the chip U1 is connected with the pin b of the nixie tube DS4, and the pin SEGG of the chip U1 is connected with the pin g of the nixie tube DS4, the pin SEGC of the chip U1 is connected with a pin C of the nixie tube DS4, the pin SEGE of the chip U1 is connected with a pin e of the nixie tube DS4, the pin SEGDP of the chip U1 is connected with a pin DP of the nixie tube DS4, the pin SEGD of the chip U1 is connected with a pin d of the nixie tube DS4, pins a, b, C, d, e, f, g and DP of the nixie tube DS2 are respectively connected with pins a, b, C, d, e, f, g and DP of the nixie tube DS4, and pins a, b, C, d, e, f, g and DP of the nixie tube DS3 are respectively connected with pins a, b, C, d, e, f, g and DP of the nixie tube DS 4.

9. A total station lithium battery solar charger device, characterized in that it comprises a housing and a circuit board provided with the total station lithium battery solar charger circuit of any of claims 1-8, said circuit board being arranged in said housing.

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