CN211790795U - Power supply circuit for heating clothes - Google Patents
Power supply circuit for heating clothes Download PDFInfo
- Publication number
- CN211790795U CN211790795U CN201921544227.7U CN201921544227U CN211790795U CN 211790795 U CN211790795 U CN 211790795U CN 201921544227 U CN201921544227 U CN 201921544227U CN 211790795 U CN211790795 U CN 211790795U
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- resistor
- battery
- capacitor
- circuit
- switch
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- 238000010438 heat treatment Methods 0.000 title claims description 21
- 238000007599 discharging Methods 0.000 claims abstract description 31
- 239000003990 capacitor Substances 0.000 claims description 58
- 230000001629 suppression Effects 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 8
- 230000006870 function Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 230000009993 protective function Effects 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 230000006872 improvement Effects 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model discloses a clothes supply circuit generates heat, this clothes supply circuit generates heat is including the battery of electricity connection in proper order, charging circuit, discharge circuit, a control chip, protection chip and load, DC power supply is connected to charging circuit's input, the battery is connected to charging circuit's output, discharge circuit is connected to the output of battery, discharge circuit's output connection load, control chip is connected with charging circuit and discharge circuit respectively, control chip is used for controlling charging or discharging of battery, protection chip is connected with the two poles of the earth of battery, when the battery is crossed to charge or cross when discharging, control chip cuts off charging circuit or discharge circuit. The utility model provides a clothes supply circuit generates heat through the two poles of the earth at the battery increase protection chip, can close the process of charging or discharging when control chip is to the battery overcharge or the protective function failure of putting excessively, plays the second heavy protect function then, improves the security of the clothes of generating heat.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to clothes supply circuit generates heat.
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 are all provided with control chips with over-high and over-low voltages of lithium batteries, but only one control chip is provided, and when the control chip fails in the protection of over-charging or over-discharging of the lithium batteries, faults of charging circuits or power supply circuits of the heating clothes can be caused, and the lithium batteries can be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides the clothes supply circuit generates heat, through increasing protection chip, has avoided the only control chip of present clothes that generate heat to the lithium cell overcharge or the emergence of the circuit trouble damage lithium cell phenomenon even that the protection of putting became invalid, cause.
In order to achieve the purpose, the utility model provides a power supply circuit of heating clothes, which comprises a battery, a charging circuit, a discharging circuit, a control chip, a protection chip and a load which are electrically connected in sequence, the input end of the charging circuit is connected with a direct current power supply, the output end of the charging circuit is connected with the battery, the output end of the battery is connected with the discharge circuit, the output end of the discharge circuit is connected with the load, the control chip is respectively connected with the charging circuit and the discharging circuit, the control chip is used for controlling the charging or discharging of the battery, the protection chip is connected with two poles of the battery, when the battery is overcharged or overdischarged, the control chip cuts off the charging circuit or the discharging circuit, when the battery is overcharged or overdischarged and the control chip does not work or works abnormally, the protection chip cuts off the charging circuit or the discharging circuit.
As an improvement, the battery is a lithium battery, the protection chip is a lithium battery protection chip, a first power supply end of the protection chip is connected with one pole of the battery, a second power supply end of the protection chip is connected with the other pole of the battery, and the protection chip is connected with the battery and used for cutting off the connection between the battery and the charging circuit or the discharging circuit.
As an improvement, the ground terminal of the protection chip is connected with the cathode of the battery, the VDD terminal of the protection chip is connected with one end of a resistor R17 and one end of a capacitor C9, the other end of the resistor R17 is connected with the anode of the battery, the other end of the capacitor C9 is connected with the cathode of the battery, and the low level terminal of the protection chip is grounded.
As an improvement, the charging circuit is connected with a diode D1, a capacitor C1, a resistor R2, a resistor R7, a resistor R10, a resistor R12, a switch Q4, a resistor R3, a switch Q1, the battery, and a resistor R1, respectively.
As an improvement, the charging circuit is connected to one end of the capacitor C1, one end of the resistor R2, one end of the capacitor R7, one end of the diode D1, and one end of the resistor R1, respectively.
As an improvement, the other end of the capacitor C1 and the other end of the resistor R2 are both grounded, the other end of the resistor R7 is connected to one end of the resistor R10, one end of the resistor R12 and the control end of the switch Q4, the other end of the resistor R10 is connected to the PWM pin of the control chip, the other end of the resistor R12 is grounded, the other end of the diode D1 is connected to one end of the resistor R3 and the input end of the switch Q1, the other end of the resistor R3 is connected to the control end of the switch Q1 and the input end of the switch Q4, the output end of the switch Q4 is grounded, the output end of the switch Q1 is connected to the positive electrode of the battery, and the positive electrode of the battery is grounded through the capacitor C2; the other end of the resistor R1 is connected to ground and one end of a resistor R5, the other end of the resistor R5 is connected to a CHEG _ GND pin of the control chip and one end of a capacitor C5, and the other end of the capacitor C5 is connected to the negative electrode of the external power supply.
As an improvement, the discharge circuit is connected with the battery, the transient suppression diode, the capacitor C3, the capacitor C4, the DC female seat, the switch Q3, the resistor R4, the switch Q2, the resistor R6, the resistor R8, the resistor R9, the resistor R11 and the capacitor C6.
As an improvement, the discharge circuit is connected with one pole of the battery, one pole of the transient suppression diode, one end of the capacitor C3, one end of the capacitor C4 and one pole of the DC female seat.
As an improvement, the other pole of the transient suppression diode and the other end of the capacitor C3 are both grounded, the other end of the capacitor C4 is connected to the negative electrode of the DC female socket, one end of the resistor R4 and the input end of the switch Q3, one end of the other end of the resistor R4 is connected to one end of the resistor R10 and the control end of the switch Q2, the other end of the resistor R10 and the output end of the switch Q2 are grounded, the input end of the switch Q2 is connected to the DCOUT _ WAKE pin of the control chip, the control end of the switch Q3 is connected to one end of the resistor R8 and the enable end of the control chip, the other end of the resistor R8 is grounded, the output end of the switch Q3 is connected to one end of the resistor R9 and one end of the resistor R11, the other end of the resistor R9 is connected to the DC _ pin of the GND control chip and one end of the capacitor C6, and the other end of the resistor R, the other end of the capacitor C6 is grounded.
As an improvement, a VDD pin of the control chip is connected to one end of a capacitor C7, one end of a capacitor C8, and an anode of a battery, the other end of the capacitor C7, the other end of the capacitor C8, and a cathode of the external power supply are all connected to a VSS pin of the control chip, a KEY pin of the control chip is grounded through a KEY, a VIN _ WAKE pin of the control chip is connected to an input end of a switch Q5, a control end of the switch Q5 is connected to one end of a resistor R18 and one end of a resistor R19, the other end of the resistor R18 is connected to the anode of the external power supply, and the other end of the resistor R19 and an output end of the switch Q5 are grounded.
The utility model provides a clothes supply circuit generates heat has following advantage:
through increasing the protection chip at two poles of the battery, can close the process of charging or discharging through the protection chip when the control chip is invalid to the protection function that the battery overcharged or overdischarged, play the second heavy protect function then, improve the security of the clothes battery that generates heat.
Drawings
Fig. 1 is a system block diagram of a power supply circuit for a heating garment according to an embodiment of the present invention.
Fig. 2 is a specific circuit diagram of the charging circuit in fig. 1.
Fig. 3 is a detailed circuit diagram of the discharge circuit of fig. 1.
Fig. 4 is a circuit diagram of the protection chip and the battery in fig. 1.
Fig. 5 is a pin diagram of the control chip in fig. 1.
Fig. 6 is a pin diagram of the control chip and the BLED high-power LED explosion-proof lamp in fig. 5.
In the figure: 1. a power source; 2. a charging circuit; 3. a battery; 4. a discharge circuit; 5. a load; 6. a control chip; 7. and protecting the chip.
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.
Referring to fig. 1, an embodiment of the present invention provides a power supply circuit for a heating garment, the power supply circuit for a heating garment includes a battery 3, a charging circuit 2, a discharging circuit 4, a control chip 6, a protection chip 7 and a load 5, which are electrically connected in sequence, an input terminal of the charging circuit 2 is connected to a dc power supply 1, an output terminal of the charging circuit 2 is connected to the battery 3, an output terminal of the battery 3 is connected to the discharging circuit 4, an output terminal of the discharging circuit 4 is connected to the load 5, the control chip 6 is connected to the charging circuit 2 and the discharging circuit 4 for controlling and protecting charging and discharging of the battery 3, the protection chip 7 is connected to two poles of the battery 3, when the battery 3 is overcharged or overdischarged, the control chip 6 cuts off the charging circuit 2 or the discharging circuit 4, when the battery 3 is overcharged or overdischarged and the control chip 6 does not work or works abnormally, the protection chip 6 switches off the charging circuit 2 or the discharging circuit 4.
Referring to fig. 2, 4 and 5, in an embodiment, an output terminal of the charging circuit 2 is connected to an anode of the diode D1, one terminal of the capacitor C1, one terminal of the resistor R2 and one terminal of the resistor R7, the other end of the capacitor C1 and the other end of the resistor R2 are both grounded, the other end of the resistor R7 is connected with one end of the resistor R10, one end of the resistor R12 and the control end of the switch Q4, the other end of the resistor R10 is connected with the PWM pin of the control chip 6, the other end of the resistor R12 is grounded, the cathode of the diode D1 is connected with one end of a resistor R3 and the input end of a switch Q1, the other end of the resistor R3 is connected with the control end of the switch Q1 and the input end of the switch Q4, the output end of the switch Q4 is grounded, the output end of the switch Q1 is connected with the positive electrode of the battery 3, and the positive electrode of the battery 3 is grounded through a capacitor C2;
the other output end of the charging circuit 2 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the ground and one end of a resistor R5, and the other end of the resistor R5 is connected with a CHEG _ GND pin of the control chip 6 and one end of a capacitor C5;
one input end of the charging circuit 2 is connected with the anode of the external power supply 1, the other input end of the charging circuit 2 is connected with the cathode of the external power supply 1, and the other end of the capacitor C5 is connected with the cathode of the external power supply 1; the working principle of the charging circuit 2 is described in detail below, it should be noted that the protection chip 7 is of the type XB5606AJ, specifically, the protection chip 7 is a two-in-one lithium protection IC of the type XB5606 AJ; the model of the control chip 6 is SN8P 2711B; the switch Q1 is a MOS tube; the switches Q2 and Q5 are triodes; the switch Q3 is an NMOS tube with the model of AO 3400; the input end CRO-USB of the charging circuit 2 is connected, the charging circuit is connected through a filter capacitor C1 (specification is 106/16V), a discharging resistor R2 (resistance value is 10K), a rectifier diode D1, a switch Q1, a filter capacitor C2, a current sampling resistor R1 (resistance value is 0.03R) and a protection chip 7 to charge the battery 3, a battery power-on circuit is formed by a resistor R7 (resistance value is 75K), a resistor R10 (resistance value is 2K) and a resistor R12 (resistance value is 20K), and the charging activation circuit is charged. When the battery 3 is just powered on, the protection chip 7 is in a closed state, the control chip 6 is in a non-working state due to no power supply, when the MICRO _ USB is inserted for charging, the control chip 6 cannot switch on the triode switch Q4 through the PWM pin due to no power supply, the triode switch Q4 is switched off to lead the PMOS switch Q1 to be switched off, so that the charging circuit 2 is in a closed state, the protection chip 7 is activated to be turned on for discharging, and at the moment, the triode switch Q4 is switched on by the charging activation circuit to control the PMOS switch Q1 to turn on the charging circuit 2, so that the protection chip 7 is turned on for discharging; the control chip 6 controls the PMOS switch Q1 to control the charging voltage and current, the charging current is sampled by R1 and gives the value to the control chip 6, and the charging voltage is collected and read by the AD detection channel of VDD (i.e. the battery voltage) inside the control chip 6. When the charging current or the charging voltage exceeds a set value, the control chip 6 closes charging; when the charging protection of the control chip 6 is invalid, the protection chip 7 can play a second protection function, and the charging circuit 2 is closed to continue charging the battery 3.
The rectifier diode D1 is used to prevent the battery 3 from being charged reversely, so as to avoid the power loss of the battery 3 and the erroneous judgment of the control charging identification.
Referring to fig. 3, 4 and 5, an input end of the discharge circuit 4 is connected to the positive electrode of the battery 3, an output end of the discharge circuit 4 is connected to the cathode of the transient suppression diode, one end of a capacitor C3, one end of a capacitor C4 and the positive electrode of the DC socket, the anode of the transient suppression diode and the other end of the capacitor C3 are both grounded, the other end of the capacitor C4 is connected to the negative electrode of the DC socket, one end of a resistor R4 and the input end of a switch Q3, one end of the other end of the resistor R4 is connected to one end of the resistor R10 and the control end of the switch Q2, the other end of the resistor R10 and the output end of the switch Q2 are grounded, the input end of the switch Q2 is connected to the DCOUT _ WAKE pin of the control chip 6, the control end of the switch Q3 is connected to one end of the resistor R8 and the enable end of the control chip 6, and the other end of the resistor R8 is, the output end of the switch Q3 is connected with one end of a resistor R9 and one end of a resistor R11, the other end of the resistor R9 is connected with a DC _ GND pin of the control chip 6 and one end of a capacitor C6, the other end of the resistor R11 is grounded, and the other end of the capacitor C6 is grounded; the operation of the lower discharge circuit 4 is described in detail below: the discharging circuit 4 is formed by that a battery 3 passes through a protection chip 7U2, a TVS tube Z1, a filter capacitor C3 (the specification is 226/10V), an NMOS tube switch Q3 (the model is AO3400), and then passes through a current adoption resistor R11(0.03R) to be output by a DC mother seat (the model is 35135); the triode switch Q2 and the switch Q5 are used for charge awakening identification and DC discharge awakening and identification respectively; the control chip 6 controls DC discharge by controlling an NMOS tube Q3, the control chip 6 samples discharge current by R11, and discharge voltage is acquired and read by a VDD (voltage of a battery 3) AD detection channel in the control chip 6; when the discharging current and the voltage of the battery 3 are too low and exceed set values, the control chip 6 can close the NMOS tube switch Q3 to play a role in discharging protection; when the discharge protection of the control chip 6 fails, the protection chip 7 can play a second protection function, and the action that the battery 3 continues to discharge to the discharge circuit 4 is closed; the product charges and discharges and all is by dual protection function, and it is convenient to use, plug-and-play.
The function of inquiring the electric quantity of the control chip 6 can be turned on or off by setting the key S1.
Referring to fig. 6, the LEDs 1-4 are respectively connected to the 6 th pin, the 11 th pin, the 12 th pin and the 13 th pin of the control chip 6 for indicating the amount of power.
The above embodiments of the present invention are only embodiments, and it should be noted herein that, for those skilled in the art, without departing from the inventive concept, improvements can be made, such as for processing similar graphite products and processing other materials similar to graphite materials, and modifying the related design parameters and manufacturing processes on the basis of the present invention, which are the same as the design idea and processing principle of the present invention, but these all belong to the protection scope of the present invention.
Claims (10)
1. A power supply circuit for heating clothes is characterized by comprising a battery, a charging circuit, a discharging circuit, a control chip, a protection chip and a load which are electrically connected in sequence, the input end of the charging circuit is connected with a direct current power supply, the output end of the charging circuit is connected with the battery, the output end of the battery is connected with the discharge circuit, the output end of the discharge circuit is connected with the load, the control chip is respectively connected with the charging circuit and the discharging circuit, the control chip is used for controlling the charging or discharging of the battery, the protection chip is connected with two poles of the battery, when the battery is overcharged or overdischarged, the control chip cuts off the charging circuit or the discharging circuit, when the battery is overcharged or overdischarged and the control chip does not work, the protection chip cuts off the charging circuit or the discharging circuit.
2. A power supply circuit for a heat generating suit as claimed in claim 1 wherein the first power supply terminal of the protection chip is connected to one pole of the battery and the second power supply terminal of the protection chip is connected to the other pole of the battery, and the protection chip is adapted to disconnect the battery from the charging circuit or the discharging circuit when the battery is overcharged or overdischarged and the control chip is not in operation or is operating abnormally.
3. A power supply circuit for heating clothes as claimed in claim 2, wherein the ground terminal of the protection chip is connected to the cathode of the battery, the VDD terminal of the protection chip is connected to one terminal of a resistor R17 and one terminal of a capacitor C9, the other terminal of the resistor R17 is connected to the anode of the battery, the other terminal of the capacitor C9 is connected to the cathode of the battery, and the low-level terminal of the protection chip is grounded.
4. The power supply circuit for the heating clothes as claimed in claim 1, wherein the charging circuit is connected with a diode D1, a capacitor C1, a resistor R2, a resistor R7, a resistor R10, a resistor R12, a switch Q4, a resistor R3, a switch Q1, the battery and a resistor R1 respectively.
5. The power supply circuit for heating clothes as claimed in claim 4, wherein the charging circuit is connected to one end of a capacitor C1, one end of a resistor R2, one end of a capacitor R7, one end of a diode D1 and one end of a resistor R1 respectively.
6. The heating clothes power supply circuit according to claim 5, wherein the other end of the capacitor C1 and the other end of the resistor R2 are grounded, the other end of the resistor R7 is connected to one end of the resistor R10, one end of the resistor R12 and the control end of the switch Q4, the other end of the resistor R10 is connected to the PWM pin of the control chip, the other end of the resistor R12 is grounded, the other end of the diode D1 is connected to one end of the resistor R3 and the input end of the switch Q1, the other end of the resistor R3 is connected to the control end of the switch Q1 and the input end of the switch Q4, the output end of the switch Q4 is grounded, the output end of the switch Q1 is connected to the positive pole of the battery, and the positive pole of the battery is grounded through the capacitor C2; the other end of the resistor R1 is connected to ground and one end of a resistor R5, the other end of the resistor R5 is connected to a CHEG _ GND pin of the control chip and one end of a capacitor C5, and the other end of the capacitor C5 is connected to the negative electrode of the direct-current power supply.
7. The heating clothes power supply circuit according to claim 1, wherein the discharge circuit is connected with the battery, the transient suppression diode, a capacitor C3, a capacitor C4, a DC base, a switch Q3, a resistor R4, a switch Q2, a resistor R6, a resistor R8, a resistor R9, a resistor R11 and a capacitor C6.
8. The heating-clothing power-supplying circuit as claimed in claim 7, wherein the discharging circuit is connected to a pole of the battery, a pole of the transient suppression diode, one end of the capacitor C3, one end of the capacitor C4, and one pole of the DC socket.
9. The circuit for supplying heating clothes according to claim 8, wherein the other pole of the transient suppression diode and the other end of the capacitor C3 are grounded, the other end of the capacitor C4 is connected to the negative pole of the DC socket, one end of the resistor R4 and the input end of the switch Q3, one end of the other end of the resistor R4 is connected to one end of the resistor R10 and the control end of the switch Q2, the other end of the resistor R10 and the output end of the switch Q2 are grounded, the input end of the switch Q2 is connected to the DCOUT _ WAKE pin of the control chip, the control end of the switch Q3 is connected to one end of the resistor R8 and the enable end of the control chip, the other end of the resistor R8 is grounded, the output end of the switch Q3 is connected to one end of the resistor R9 and one end of the resistor R11, and the other end of the resistor R9 is connected to the DC _ pin of the control chip and one end of the capacitor C6, the other end of the resistor R11 is grounded, and the other end of the capacitor C6 is grounded.
10. The power supply circuit for heating clothes according to claim 1, wherein a VDD pin of the control chip is connected to one end of a capacitor C7, one end of a capacitor C8 and an anode of a battery, the other end of the capacitor C7, the other end of the capacitor C8 and a cathode of the dc power supply are all connected to a VSS pin of the control chip, a KEY pin of the control chip is grounded through a KEY, a VIN _ WAKE pin of the control chip is connected to an input end of a switch Q5, a control end of the switch Q5 is connected to one end of a resistor R18 and one end of a resistor R19, the other end of the resistor R18 is connected to the anode of the dc power supply, and the other end of the resistor R19 and an output end of the switch Q5 are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544227.7U CN211790795U (en) | 2019-09-17 | 2019-09-17 | Power supply circuit for heating clothes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544227.7U CN211790795U (en) | 2019-09-17 | 2019-09-17 | Power supply circuit for heating clothes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211790795U true CN211790795U (en) | 2020-10-27 |
Family
ID=72933171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921544227.7U Expired - Fee Related CN211790795U (en) | 2019-09-17 | 2019-09-17 | Power supply circuit for heating clothes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211790795U (en) |
-
2019
- 2019-09-17 CN CN201921544227.7U patent/CN211790795U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |