CN210957816U - Heating clothes power supply circuit with display function - Google Patents

Abstract

The utility model discloses a generate heat clothes supply circuit with show function, including charging circuit, lift and press chip, control chip, output circuit, battery and display device, charging circuit with lift and press the chip and the control chip electricity is connected, lift and press the chip still with control chip and battery electricity are connected, control chip still respectively with lift press the chip the battery output circuit and the display device electricity is connected. The technical scheme provided by the utility model, following advantage has: the control chip is still connected with the buck-boost chip, battery and display device electricity, and the display device is the charactron, carries out the demonstration of the electric quantity and the charge-discharge state that show through the charactron, is convenient for look over the electric quantity of battery and the charge-discharge state of battery.

Description

Heating clothes power supply circuit with display function

Technical Field

The utility model relates to an electronic circuit field especially relates to a heating clothes supply circuit with show function.

Background

The heating clothes are also called far infrared electric heating health care down vest for men and women. The heating garment is essentially a health-care down vest, the components of the heating garment are 90% of white duck down, heat is supplied through a lithium battery, the far infrared electric heating health-care down vest for men and women is provided with far infrared electric heating sheets in an interlayer, and the lithium battery is used for supplying power for heating. The fabric is soft, the tensile strength is strong, the clothes can be washed, and the clothes are suitable for people in areas without heating in winter to get warm, nurse and care.

The existing heating clothes do not have the functions of charging and discharging and electric quantity display when in use, and are inconvenient to use.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a power supply circuit for a heating garment with a display function, which is capable of providing a charging/discharging function and a power display function when the heating garment is in use.

In order to achieve the above object, the utility model provides a heating clothes supply circuit with show function, including charging circuit, buck-boost chip, control chip, output circuit, battery and display device, charging circuit with buck-boost chip and the control chip electricity is connected, buck-boost chip still with control chip and battery electricity are connected, control chip still respectively with buck-boost chip the battery output circuit and the display device electricity is connected.

Optionally, the charging circuit includes a first interface, a current backflow preventing component and a filtering component, the first interface is respectively connected with an external direct current and the current backflow preventing component, the current backflow preventing component is further connected with the filtering component, and the filtering component is electrically connected with the buck-boost chip.

Optionally, the first output circuit includes a first switch component and a second interface, and the first switch component is electrically connected to the buck-boost chip, the control chip, and the second interface, respectively;

the second output circuit comprises a second switch component and a third interface, and the second switch component is electrically connected with the third interface, the control chip and the battery respectively.

Optionally, the first switching assembly comprises a fourth switching element, a fifth switching element, a sixth switching element and a second voltage dividing element;

the output end of the fourth switch element is electrically connected with the second interface, the input end of the fourth switch element is electrically connected with the first end of the second voltage-dividing element and the output end of the fifth switch element, the control end of the fourth switch element is electrically connected with the second end of the second voltage-dividing element, the control end of the fifth switch element and the input end of the sixth switch element, the input end of the fifth switch element is electrically connected with the voltage boosting and reducing chip, the output end of the sixth switch element is grounded, and the control end of the sixth switch element is electrically connected with the control chip.

Optionally, the second switch assembly comprises a seventh switch element, an eighth switch element and a third voltage dividing element;

the input end of the seventh switch element is electrically connected with the first end of the battery, the first pole of the third interface, the first end of the third voltage division element and the input end of the eighth switch element, the second end of the third voltage division element is electrically connected with the second end of the battery, the output end of the seventh switch element is electrically connected with the output end of the eighth switch element and the second pole of the third interface, and the control end of the seventh switch element is electrically connected with the control end of the eighth switch element and the control chip.

Optionally, a first energy storage element, a ninth switching element, a tenth switching element, a fourth voltage dividing element and a fifth voltage dividing element are electrically connected between the buck-boost chip and the control chip;

the input end of the ninth switch element is electrically connected with the first ends of the buck-boost chip and the fourth voltage dividing element, the output end of the ninth switch element is electrically connected with the second end of the fourth voltage dividing element and the input end of the tenth switch element, the control end of the ninth switch element is electrically connected with the first end of the fifth voltage dividing element and the first end of the first energy storage element, the second end of the fifth voltage dividing element is electrically connected with the output end and the grounding end of the tenth switch element, and the control end of the tenth switch element is electrically connected with the control chip.

Optionally, the display device is a nixie tube.

The technical scheme provided by the utility model, following advantage has:

the control chip is still connected with the buck-boost chip, battery and display device electricity, and the display device is the charactron, carries out the demonstration of the electric quantity and the charge-discharge state that show through the charactron, is convenient for look over the electric quantity of battery and the charge-discharge state of battery.

Drawings

Fig. 1 is a block diagram of a power supply circuit of a heating suit with a display function according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of the charging circuit of FIG. 1;

FIG. 3 is a circuit diagram of the buck-boost chip of FIG. 1;

FIG. 4 is a circuit diagram of the control chip of FIG. 1;

FIG. 5 is a first output circuit diagram of the output circuit of FIG. 1;

FIG. 6 is a second output circuit diagram of the output circuit of FIG. 1;

fig. 7 is a circuit diagram of the buck-boost chip and the control chip in fig. 1.

In the figure: 10. a charging circuit; 11. a current backflow prevention resistor; 12. a filtering component; 20. a buck-boost chip; 30. a control chip; 40. an output circuit; 41. a first switch assembly; 42. a second switch assembly; 50. a battery; 60. a display device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, an embodiment of the present invention provides a power supply circuit for a heating garment with a display function, including a charging circuit 10, a buck-boost chip 20, a control chip 30, an output circuit 40, a battery 50 and a display device 60, wherein the charging circuit 10 is electrically connected to the buck-boost chip 20 and the control chip 30 respectively, the buck-boost chip 20 is electrically connected to the control chip 30 and the battery 50 respectively, and the control chip 30 is electrically connected to the buck-boost chip 20, the battery 50, the output circuit 40 and the display device 60 respectively; preferably, the display device 60 is a nixie tube, and the measured electric quantity and the charge-discharge state of the control chip 30 are displayed through the nixie tube, so that the electric quantity of the battery 50 and the charge-discharge state of the battery 50 can be conveniently checked. Further, the display device 60 is a 5-bit nixie tube.

Referring to fig. 2, the charging circuit 10 includes a first interface J1, a current backflow preventing component 11, a capacitor C9, and a filtering component 12, wherein a D + pin and a D-pin of the first interface J1 are electrically connected to a node a and a node b, respectively, and the node a is further electrically connected to a node a of the interface J2 and a DP pin of the buck-boost chip 20, respectively; node b still respectively with interface J2's node b, the DM pin electricity of buck-boost chip 20 is connected, first interface J1 still respectively with outside direct current and prevent that electric current flows backward the subassembly 11 electricity and be connected, the 1 st pin of first interface J1 is connected with electricity connection node e electricity, prevent that electric current flows backward the subassembly 11 still with filtering component 12 electricity is connected, filtering component 12 with control chip 30 electricity is connected.

Node e is also electrically connected to the first terminal of the transient suppression diode Z1, the first terminal of the resistor R4, the first pole of the capacitor C9, and the output of the current backflow prevention element 11, and the second terminal of the transient suppression diode Z1, the second terminal of the resistor R4, and the second pole of the capacitor C9 are all grounded.

Specifically, the current backflow prevention component 11 includes a first switch element Q1, a second switch element Q2, a third switch element Q3 and a first voltage dividing element R3, the current backflow prevention component 11 further includes a first diode D1 and a second diode D2, an input end of the first switch element Q1 is electrically connected to the first interface J1, a first end of the first diode D1 and a first end of the second diode D2, respectively, and an input end of the second switch element Q2 is electrically connected to the first interface J1, a first end of the first diode D1 and a first end of the second diode D2, respectively.

The output terminals of the first switching element Q1 and the second switching element Q2 are electrically connected to the first terminal of the first voltage-dividing element R3, the second terminal of the first diode D1 and the second terminal of the second diode D2, respectively, the control terminal of the first switching element Q1 is electrically connected to the control terminal of the second switching element Q2, the input terminal of the third switching element Q3 and the second terminal of the first voltage-dividing element R3, the output terminal of the third switching element Q3 is grounded, and the control terminal of the third switching element Q3 is electrically connected to the control chip 30; more specifically, the filter module 12 includes a capacitor C6, a capacitor C7, a capacitor C8, and a capacitor C10, and the charging circuit 10 further includes a capacitor C3 and a capacitor C4; the first end of the first voltage dividing element R3 is further electrically connected to a first pole of a capacitor C3, a first pole of a capacitor C4, a first end of a resistor R13, and a first end of a resistor R1, the second pole of the capacitor C3 and the second pole of the capacitor C4 are grounded, the second end of the resistor R1 is electrically connected to the node k, the first pole of the capacitor C6, the first pole of the capacitor C7, the first pole of the capacitor C10, the first pole of the capacitor C8, and the first end of the resistor R11, the node k is further electrically connected to the VBUDP pin of the buck-boost chip 20, the second pole of the capacitor C6, the second pole of the capacitor C7, the second pole of the capacitor C10, and the second pole of the capacitor C8 are grounded, the second end of the resistor R11 is electrically connected to the first pole of the capacitor C19, the node n, and the buck-boost chip 20, and the second pole of the capacitor C19 is electrically connected to the second end of the resistor R13, the.

Referring to fig. 3, fig. 3 is a schematic circuit diagram of the buck-boost chip 20, wherein the VBUDP pin, the VBUS _ SN pin, the VBUS _ SP pin, the DP pin, the DM pin, and the VBUS pin of the buck-boost chip 20 are electrically connected to the second terminal, the node n, the node m, the node a, the node b, and the node k of the resistor R1 corresponding to the charging circuit 10, and it should be noted that the VBATP pin of the buck-boost chip 20 is further electrically connected to the positive electrode of the battery 50 after passing through the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the resistor R2, the capacitor C15, the capacitor C16, and the capacitor C5 in sequence, and the first terminal of the resistor R2 is further electrically connected to the buck-boost chip 20, the second terminal of the resistor R2 is further electrically connected to the first terminal of the buck-boost chip 20 and the capacitor C21, and the second terminal of the; the BT2 pin of the buck-boost chip 20 is electrically connected to the first pole of the capacitor C18, the second pole of the capacitor C18 is electrically connected to the first end of the resistor R6, the first end of the switch SW2, the first end of the inductor L1 and the buck-boost chip 20, the second end of the switch SW2 is electrically connected to the buck-boost chip 20, the second end of the resistor R6 is electrically connected to the first pole of the capacitor C2, the second pole of the capacitor C2 is grounded, the second end of the inductor L1 is electrically connected to the first end of the resistor R5, the first end of the switch SW1, the first pole of the capacitor C17 and the buck-boost chip 20, the second end of the resistor R5 is electrically connected to the first pole of the capacitor C1, the second pole of the capacitor C1 is grounded, the second pole of the capacitor C17 is electrically connected to the buck-boost chip 20, and the.

Referring to fig. 4, fig. 4 is a circuit diagram of the control chip 30, in which a 1 st pin of the control chip 30 is electrically connected to a first electrode of a capacitor C33, one end of a resistor R33, and one end of a resistor R30, a second electrode of the capacitor C33, and the other end of the resistor R33 are both grounded, the other end of the resistor R30 is electrically connected to a node P, a 2 nd pin of the control chip 30 is electrically connected to a first end of the resistor R44 and a first electrode of the capacitor C36, a second electrode of the capacitor C36 is grounded, a second end of the resistor R44 is electrically connected to a node W, the node W is electrically connected to an ILIMI1 pin of the buck-boost chip 20, a 5 th pin of the control chip 30 is electrically connected to a first end of the resistor R38, and a second end of the resistor R38 is electrically; a pin 3 of the control chip 30 is electrically connected with a node S, a pin 4 of the control chip 30 is electrically connected with a node T, and both the node S and the node T are electrically connected with a first output circuit; the 14 th pin of the control chip 30 is electrically connected to a node U, and the node U is electrically connected to the second output circuit; the 18 th pin of the control chip 30 is electrically connected to a node X, and the node X is electrically connected to the switch Q8; a 15 th pin of the control chip 30 is electrically connected to an input terminal of the switch Q11, an output terminal of the switch Q11 is grounded, a control terminal of the switch Q11 is electrically connected to a first terminal of the resistor R43, the node Y, and a negative terminal of the second interface J3, and a second terminal of the resistor R43 is grounded; the 16 th pin of the control chip 30 is grounded through the key S1, the 20 th pin of the control chip 30 is electrically connected with the input end of the switch Q9, the output end of the switch Q9 is grounded, the control end of the switch Q9 is electrically connected with the first end of the resistor R31 and the first end of the resistor R32, the second end of the resistor R31 is grounded, and the second end of the resistor R32 is electrically connected with the node e; the display device 60 is a five-digit nixie tube, wherein the 1 st nixie tube to the 5 th nixie tube of the five-digit nixie tube are respectively electrically connected with the first end of the resistor R36, the first end of the resistor R37, the first end of the resistor R39, the first end of the resistor R41 and the first end of the resistor R42, the second end of the resistor R36 is electrically connected with the 12 th pin of the control chip 30, the second end of the resistor R37 is electrically connected with the 13 th pin of the control chip 30, the second end of the resistor R39 is electrically connected with the 11 th pin of the control chip 30, the second end of the resistor R41 is electrically connected with the 8 th pin of the control chip 30, and the second end of the resistor R42 is electrically connected with the 10 th pin.

Referring to fig. 5 and 6, fig. 5 shows a circuit diagram of the first output circuit 40; the first output circuit 40 comprises a first switch assembly 41 and a second interface J3, wherein the first switch assembly 41 is electrically connected to the buck-boost chip 20, the control chip 30 and the second interface J3 respectively; wherein, the first output circuit is also the USBA output circuit;

optionally, the first switching assembly 41 comprises a fourth switching element Q4, a fifth switching element Q5, a sixth switching element Q6 and a second voltage dividing element R17; specifically, the fourth switching element Q4 and the fifth switching element Q5 are PMOS transistors, and the sixth switching element Q6 is a triode.

The output end of the fourth switching element Q4 is electrically connected to the positive end of the second interface J3 and the second end of the resistor R38, the input end of the fourth switching element Q4 is electrically connected to the first end of the second voltage-dividing element R17 and the output end of the fifth switching element Q5, the control end of the fourth switching element Q4 is electrically connected to the second end of the second voltage-dividing element R17, the control end of the fifth switching element Q5 and the input end of the sixth switching element Q6, the input end of the fifth switching element Q5 is electrically connected to the 10 th pin of the voltage-boosting and reducing chip 20, the output end of the sixth switching element Q6 is grounded, the control end of the sixth switching element Q6 is electrically connected to one end of the resistor R20 and one end of the resistor R26, the other end of the resistor R26 is grounded, the other end of the resistor R20 is electrically connected to the node T, and the node T is electrically connected to the control chip 30.

The negative end of the second interface J3 is electrically connected to one end of the resistor R16 and one end of the resistor R25, the other end of the resistor R16 is electrically connected to one end of the capacitor C23 and the node S, the node S is also electrically connected to the control chip 30, and the other end of the resistor R25 and the other end of the capacitor C23 are both grounded.

Referring to fig. 6, fig. 6 is a circuit diagram of a second output circuit 40, the second output circuit 40 includes a second switch assembly 42 and a third interface J4, the second switch assembly 42 is electrically connected to the control chip 30 and the battery 50, respectively; the second output circuit 40 is also a Direct Current (DC) output, and the positive electrode of the third interface J4 is electrically connected to a node P, where the node P is the positive electrode of the battery 50;

optionally, the second switching assembly 42 comprises a seventh switching element Q10, an eighth switching element Q12, and a third voltage dividing element R35;

an input end of the seventh switching element Q10 is electrically connected to the node P, a first end of the third interface J4, a first end of the third voltage division element R35, and an input end of the eighth switching element Q12, a second end of the third voltage division element R35 is electrically connected to a second end of the battery 50, an output end of the seventh switching element Q10 is electrically connected to an output end of the eighth switching element Q12 and a second end of the third interface J4, a control end of the seventh switching element Q10 is electrically connected to the node K and a control end of the eighth switching element Q12, and the node K is electrically connected to the 17 th pin of the control chip 30;

preferably, an input terminal of the seventh switching element Q10 is electrically connected to the first pole of the capacitor C32, the second pole of the capacitor C32 is electrically connected to the node P, the first pole of the capacitor C29, the first pole of the capacitor C30, the first pole of the capacitor C31, and the first end of the resistor R40, the second end of the resistor R40 is electrically connected to the 14 th pin of the control chip 30 and the first pole of the capacitor C35, and the second pole of the capacitor C35 is electrically connected to the ground.

Referring to fig. 7, a first energy storage element C26, a ninth switching element Q7, a tenth switching element Q8, a fourth voltage dividing element R27 and a fifth voltage dividing element R29 are electrically connected between the buck-boost chip 20 and the control chip 30;

an input end of the ninth switching element Q7 is electrically connected to a node R, the node R is further electrically connected to the 7 th pin of the buck-boost chip 20 and the first end of a fourth switching element R27, respectively, an output end of the ninth switching element Q7 is electrically connected to the second end of the fourth switching element R27 and the input end of the tenth switching element Q8, a control end of the ninth switching element Q7 is electrically connected to the first end of the fifth switching element R29 and the first end of the first energy storage element C26, the second end of the fifth switching element R29 and the output end of the tenth switching element Q8 are both grounded, and a control end of the tenth switching element Q8 is electrically connected to the 18 th pin of the control chip 30; preferably, the control terminal of the ninth switching element Q7 is further electrically connected to the first pole of the capacitor C24, and the second pole of the capacitor C24 is electrically connected to the VCC pin of the buck-boost chip 20; preferably, the node R is further electrically connected to a first terminal of the resistor R28 and a first pole of the capacitor C26, and a second terminal of the resistor R28 and a second pole of the capacitor C26 are both grounded.

The working process of the power supply circuit of the heating clothes with the display function is described in detail as follows: the heating clothes power supply circuit adopts the battery 50 to supply power for the mainboard, the charging circuit 10 adopts 9V step-up and step-down constant current constant voltage quick charge, the two kinds of interface inputs of (TYPE-C) and interface J2 (MICRO-USB) of first interface J1 and J1, the charging circuit 10 is connected with the step-up and step-down chip 20 through filter capacitor C9 (model 106/16V), prevent that electric current flows back resistance piece PMOS switch Q1, switch Q2 (model AO3401), resistance R1 (rule is 0.01R 1%) in proper order.

The output circuit 40 is composed of a USBA output circuit (i.e. a first output circuit), the output circuit 40 sequentially passes through a PMOS switch Q4, a switch Q5 (model AO3401) and a current sampling resistor R25 (specification 0.03R) of the current backflow preventing component 11 and then is output, and the charging circuit 10 is matched with the buck-boost chip 20 to control the rising or falling of the current.

The DC output circuit (namely the second output circuit) sequentially passes through a filter capacitor C29, a capacitor C30, an NMOS tube switch Q10, a switch Q12 (model 8205) and a current sampling resistor R35 (specification 0.03R) and is output by a DC mother seat J4 (model DC-35135).

When the control chip 30 detects a pull-down signal of the Q9 triode (model 2N3904), an external direct-current power supply is connected to the charging circuit 10, the control chip 30 enters a charging state by controlling the charging circuit 10 and the conduction of the buck-boost chip 20 and the battery 50, the USBA output is turned off, the buck-boost chip 20 transmits the charging signal to the control chip 30, and the control chip 30 displays the charging state through the display device 60.

When the control chip 30 detects that the key S1 pulls down the power-on signal and the switch Q6 is input or the switch Q11 (model 2N7002K) is turned on, the control chip 30 controls the second output circuit 40 to be turned on with the battery 50, and the control chip 30 displays the working state of the output circuit through the nixie tube, so that the electric quantity of the battery and the charging and discharging states of the battery can be conveniently checked.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a generate heat clothes power supply circuit with show function, its characterized in that, including charging circuit, step-up and step-down chip, control chip, output circuit, battery and display device, charging circuit with step-up and step-down chip and the control chip electricity is connected, step-up and step-down chip still with control chip and battery electricity are connected, control chip still respectively with step-up and step-down chip the battery output circuit and the display device electricity is connected.

2. The power supply circuit with display function for heating service of claim 1, wherein the charging circuit comprises a first interface, a current backflow preventing component, and a filtering component, the first interface is electrically connected to the external direct current and the current backflow preventing component respectively, the current backflow preventing component is further electrically connected to the filtering component, and the filtering component is electrically connected to the voltage boosting and reducing chip.

3. The power supply circuit for a heating garment having a display function according to claim 2, wherein the current backflow preventing member comprises a first switching element, a second switching element, a third switching element, and a first voltage dividing element;

the first switch element and the second switch element are respectively electrically connected with the first interface, the third switch element and the filter component, and the third switch element is also electrically connected with the buck-boost chip.

4. The power supply circuit for a heating clothes with a display function according to claim 3, the current backflow preventing component also comprises a first diode and a second diode, wherein the input ends of the first switch element and the second switch element are respectively and electrically connected with the first interface, the first end of the first diode and the first end of the second diode, the output ends of the first switch element and the second switch element are respectively and electrically connected with the first end of the first voltage division element, the second end of the first diode and the second end of the second diode, the control end of the first switch element is electrically connected with the control end of the second switch element, the input end of the third switch element and the second end of the first voltage division element, the output end of the third switching element is grounded, and the control end of the third switching element is electrically connected with the control chip.

5. The power supply circuit for a heating garment with a display function according to claim 1, wherein the output circuit includes a first output circuit and a second output circuit;

the first output circuit comprises a first switch component and a second interface, and the first switch component is electrically connected with the buck-boost chip, the control chip and the second interface respectively;

the second output circuit comprises a second switch component and a third interface, and the second switch component is electrically connected with the third interface, the control chip and the battery respectively.

6. The power supply circuit for a heating garment with a display function according to claim 5, wherein the first switching component comprises a fourth switching element, a fifth switching element, a sixth switching element and a second voltage dividing element;

the output end of the fourth switch element is electrically connected with the second interface, the input end of the fourth switch element is electrically connected with the first end of the second voltage-dividing element and the output end of the fifth switch element, the control end of the fourth switch element is electrically connected with the second end of the second voltage-dividing element, the control end of the fifth switch element and the input end of the sixth switch element, the input end of the fifth switch element is electrically connected with the voltage boosting and reducing chip, the output end of the sixth switch element is grounded, and the control end of the sixth switch element is electrically connected with the control chip.

7. The power supply circuit for a heating garment with a display function according to claim 5, wherein the second switching element includes a seventh switching element, an eighth switching element and a third voltage dividing element;

the input end of the seventh switch element is electrically connected with the first end of the battery, the first pole of the third interface, the first end of the third voltage division element and the input end of the eighth switch element, the second end of the third voltage division element is electrically connected with the second end of the battery, the output end of the seventh switch element is electrically connected with the output end of the eighth switch element and the second pole of the third interface, and the control end of the seventh switch element is electrically connected with the control end of the eighth switch element and the control chip.

8. The power supply circuit with the display function for the heating clothes as claimed in claim 1, wherein a first energy storage element, a ninth switching element, a tenth switching element, a fourth voltage division element and a fifth voltage division element are electrically connected between the buck-boost chip and the control chip;

the input end of the ninth switch element is electrically connected with the first ends of the buck-boost chip and the fourth voltage dividing element, the output end of the ninth switch element is electrically connected with the second end of the fourth voltage dividing element and the input end of the tenth switch element, the control end of the ninth switch element is electrically connected with the first end of the fifth voltage dividing element and the first end of the first energy storage element, the second end of the fifth voltage dividing element is electrically connected with the output end and the grounding end of the tenth switch element, and the control end of the tenth switch element is electrically connected with the control chip.

9. The power supply circuit for a heating clothes with a display function as claimed in claim 1, wherein the display device is a nixie tube.

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