CN214100895U - Type C charger device - Google Patents
Type C charger device Download PDFInfo
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- CN214100895U CN214100895U CN202022598530.4U CN202022598530U CN214100895U CN 214100895 U CN214100895 U CN 214100895U CN 202022598530 U CN202022598530 U CN 202022598530U CN 214100895 U CN214100895 U CN 214100895U
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Abstract
The utility model relates to a Type C charger device, including casing, PCB board, Type C interface and input interface, the PCB board install in the casing, the input interface sets up the one end at the casing, the Type C interface sets up the other end at the casing, the PCB board on be packaged with transient suppression circuit, reversal protection circuit, wave filter, switching power supply circuit and temperature detecting unit, transient suppression circuit, reversal protection circuit, wave filter and switching power supply circuit connect gradually, input interface connection transient suppression circuit, Type C interface connection switch circuit, temperature detecting unit connect switching power supply circuit. Compared with the prior art, the utility model discloses an increase the control that temperature detecting element realized the temperature on the PCB board of charger, avoid the charger because overheated work, and reduce efficiency and life.
Description
Technical Field
The utility model belongs to the technical field of electric automobile's on-vehicle charger and specifically relates to a Type C charger device is related to.
Background
The current vehicle-mounted charger of the electric automobile has an optimal working temperature range, and if the temperature of the vehicle-mounted charger is too high, the working efficiency of the charger is seriously influenced, so that the charger cannot work at full load. The current vehicle-mounted charger generally has no temperature detection function, can only carry out the most basic high-temperature protection through the power chip with the over-temperature protection design, and cannot be used for guaranteeing the charging efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a Type C charger device in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a Type C charger device, includes casing, PCB board, Type C interface and input interface, the PCB board install in the casing, input interface sets up the one end at the casing, the Type C interface sets up the other end at the casing, the PCB board on be packaged with transient suppression circuit, reverse protection circuit, wave filter, switching power supply circuit and temperature detecting unit, transient suppression circuit, reverse protection circuit, wave filter and switching power supply circuit connect gradually, input interface connection transient suppression circuit, Type C interface connection switch circuit, temperature detecting unit connect switching power supply circuit.
Further, the switching power supply circuit comprises a DC/DC chip, and the temperature detection unit is connected with an EN pin of the DC/DC chip.
Furthermore, the temperature detection unit comprises a thermistor RT1, a resistor R5, a resistor R15 and a capacitor C16, one end of the thermistor RT1 is connected with a power supply through a resistor R5, is grounded through a capacitor C16, and is connected with an EN pin of the DC/DC chip, and the other end of the thermistor RT1 is grounded through a resistor R15.
Further, the switching power supply circuit comprises an inductor L3, the DC/DC chip is provided with a SW pin and an OUT pin, two ends of the inductor L3 are respectively connected with the SW pin and the OUT pin, and the temperature detection unit is arranged beside the inductor L3.
Further, the thermistor RT1 is NCU15WB473F6 SRC.
Further, the model of the DC/DC chip is MPQ 4488B.
Further, the transient suppression circuit comprises a TVS tube with the model number of SMAJ 30C.
Furthermore, the reverse connection protection circuit comprises a MOSFET (metal-oxide-semiconductor field effect transistor) with the model number of DMP3018 SFVQ.
Further, the Type C interface is two, sets up in the same side of casing.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses an increase temperature detecting element on the PCB board of charger, through the magnitude of voltage at switching power supply circuit control temperature detecting element both ends, realize the control of temperature, avoid the charger because overheated work, and reduce efficiency and life. 2. The utility model discloses a temperature detecting element sets up the region that the temperature is the highest on PCB, can effectively improve the sensitivity and the precision that detect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a switching power supply circuit.
Fig. 3 is a schematic structural diagram of the temperature detection unit.
Fig. 4 is a schematic structural diagram of the reverse connection protection circuit.
Fig. 5 is a schematic diagram of the filter structure.
Fig. 6 is a front view of the PCB board.
Fig. 7 is a rear view of the PCB board.
Reference numerals: 1. PCB board, 11, transient state suppression circuit, 12, reverse connection protection circuit, 13, wave filter, 14, switching power supply circuit, 15, temperature detecting element, 2, Type C interface, 3, input interface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in FIGS. 1 to 5, the embodiment provides a Type C charger device, which comprises a shell, a PCB (printed Circuit Board) 1, two Type C interfaces 2 and an input interface 3. The PCB board 1 is arranged in a shell (not shown in the figure), and an input interface 3 is arranged at one end of the shell and is used for connecting a power line; two Type C interfaces 2 set up the other end at the casing for external battery charging outfit.
The PCB board 1 is packaged with a transient suppression circuit 11, a reverse connection protection circuit 12, a filter 13, a switching power supply circuit 14, and a temperature detection unit 15. The transient suppression circuit 11, the reverse connection protection circuit 12, the filter 13, and the switching power supply circuit 14 are connected in this order. Input interface 3 connects transient suppression circuit 11, and two Type C interface 2 connect the switch circuit. The temperature detection unit 15 is connected to the switching power supply circuit 14.
The switching power supply circuit 14 includes a DC/DC chip having a chip model of MPQ 4488B. The chip is provided with an EN pin, three SW pins and three OUT pins. The switching power supply circuit 14 further includes an inductor L3, and two ends of the inductor L3 are connected to the SW pin and the OUT pin, respectively.
The temperature detection unit 15 includes a thermistor RT1, a resistor R5, a resistor R15, and a capacitor C16. One end of the thermistor RT1 is connected with a power supply through a resistor R5, is grounded through a capacitor C16 and is connected with an EN pin of the DC/DC chip; the other end of the thermistor RT1 is connected to ground through a resistor R15. Thermistor RT1 is model NCU15WB473F6 SRC.
The transient suppression circuit 11 comprises a TVS transistor, model number SMAJ 30C. The reverse connection protection circuit 12 comprises MOSFET tubes with the model number DMP3018 SFVQ. The transient suppression circuit 11 and the reverse connection protection circuit 12 both use existing mature circuits, and therefore are not developed.
As shown in fig. 6 and 7, on the PCB board 1, the thermistor RT1 of the temperature detection unit 15 is disposed beside the inductance L3 of the switching power supply circuit 14. In the PCB 1 of the present embodiment, the temperature of the inductor L3 is the highest temperature region of the PCB 1, and therefore, the thermistor RT1 is disposed close to the inductor L3, which can effectively improve the sensitivity and accuracy of detection.
The working principle of the embodiment is as follows: a temperature detection unit 15 is added on a PCB (printed circuit board) 1 of the charger, the voltage values at two ends of the temperature detection unit 15 are monitored through a switching power supply circuit 14 to realize temperature monitoring, and when the temperature exceeds a set threshold value, the power supply switching circuit 14 automatically cuts off external charging equipment for protection. The embodiment prevents the charger from reducing efficiency and prolonging service life due to overheating operation.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A Type C charger device comprises a shell, a PCB (printed circuit board) 1, a Type C interface 2 and an input interface 3, the PCB (1) is arranged in the shell, the input interface (3) is arranged at one end of the shell, the Type C interface (2) is arranged at the other end of the shell, it is characterized in that a transient suppression circuit (11), a reverse connection protection circuit (12), a filter (13), a switching power supply circuit (14) and a temperature detection unit (15) are packaged on the PCB (1), the transient suppression circuit (11), the reverse connection protection circuit (12), the filter (13) and the switching power supply circuit (14) are connected in sequence, the input interface (3) is connected with a transient suppression circuit (11), the Type C interface (2) is connected with a power switch circuit, the temperature detection unit (15) is connected with the switching power supply circuit (14).
2. The Type C charger device according to claim 1, wherein the switching power supply circuit (14) comprises a DC/DC chip, and the temperature detection unit (15) is connected to an EN pin of the DC/DC chip.
3. The Type C charger device according to claim 2, wherein the temperature detecting unit (15) comprises a thermistor RT1, a resistor R5, a resistor R15 and a capacitor C16, one end of the thermistor RT1 is connected with a power supply through a resistor R5, is connected with the ground through a capacitor C16 and is connected with an EN pin of the DC/DC chip, and the other end of the thermistor RT1 is connected with the ground through a resistor R15.
4. The Type C charger device according to claim 2, wherein the switching power supply circuit (14) comprises an inductor L3, the DC/DC chip has a SW pin and an OUT pin, two ends of the inductor L3 are respectively connected with the SW pin and the OUT pin, and the temperature detection unit (15) is arranged beside the inductor L3.
5. A Type C charger device according to claim 3, wherein the thermistor RT1 is NCU15WB473F6 SRC.
6. A Type C charger device according to any of claims 2 to 4, wherein the DC/DC chip is MPQ 4488B.
7. A Type C charger device according to claim 1, wherein said transient suppression circuit (11) comprises a TVS transistor, model number SMAJ 30C.
8. A Type C charger device according to claim 1, characterized in that said reverse connection protection circuit (12) comprises MOSFET transistors of the Type DMP3018 SFVQ.
9. A Type C charger device according to claim 1, characterized in that, the number of the Type C interfaces (2) is two, and the two Type C interfaces are arranged on the same side of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022598530.4U CN214100895U (en) | 2020-11-11 | 2020-11-11 | Type C charger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022598530.4U CN214100895U (en) | 2020-11-11 | 2020-11-11 | Type C charger device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214100895U true CN214100895U (en) | 2021-08-31 |
Family
ID=77449181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022598530.4U Active CN214100895U (en) | 2020-11-11 | 2020-11-11 | Type C charger device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214100895U (en) |
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2020
- 2020-11-11 CN CN202022598530.4U patent/CN214100895U/en active Active
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