CN201130863Y - Charger circuit for automobile - Google Patents
Charger circuit for automobile Download PDFInfo
- Publication number
- CN201130863Y CN201130863Y CNU2007200589492U CN200720058949U CN201130863Y CN 201130863 Y CN201130863 Y CN 201130863Y CN U2007200589492 U CNU2007200589492 U CN U2007200589492U CN 200720058949 U CN200720058949 U CN 200720058949U CN 201130863 Y CN201130863 Y CN 201130863Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- pin
- output
- frequency modulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a charger circuit for vehicles, comprising: a protection circuit, a first filter circuit, a second filter circuit, a frequency modulated circuit, a step-down and frequency modulated module, a short-circuit protection circuit, a sampling circuit, a first charging interface and a second charging interface. The input of the protection circuit is connected with the vehicle direct current power supply, and the first filter circuit is connected between the output of the protection circuit and the first input of the step-down and frequency modulated module. The second filter circuit is connected with the output of the step-down and frequency modulated module. The second input of the step-down and frequency modulated module is connected with the frequency modulated circuit, and the third input is connected with an input circuit of reference voltage. The fourth input is connected with the output of the second filter circuit by the short-circuit protection circuit, and the fifth input is connected with the output of the second filter circuit by the sampling circuit. The output of the second filter circuit is also connected with two charging interfaces. According to the design, the charger circuit has the advantages that the charger adopting the charging circuit can save the space and the consumption cost.
Description
Technical field
The utility model relates to a kind of charging circuit, relates in particular to a kind of charging circuit of the vehicle charger that uses on the vehicles such as vehicle.
Background technology
Along with development of electronic technology, electronic products such as digital camera, mobile phone, Mp3 player have obtained to use widely in daily life.These electronic products all provide energy by battery, and the energy of battery is limited, therefore, need often battery to be charged.
But because people often go out, in order to satisfy the go out needs that battery charged in the way of people, a kind of vehicle charger that uses has appearred on vehicle.Yet present vehicle charger only can provide single charging inlet mostly, only can a kind of battery of electronic product be charged.For the battery to multiple electronic product charges, people need carry a plurality of dissimilar vehicle chargers, and so not only vehicle charger takies more space, and have increased people's use cost and wasted resource.
The utility model content
The purpose of this utility model is to provide a kind of vehicle charger circuit at the defective that the above-mentioned background technology exists, and makes to adopt the charger of this charging circuit can save space and use cost.
For achieving the above object, the utility model vehicle charger circuit comprises: protective circuit, first filter circuit, second filter circuit, step-down frequency modulation module, FM circuit, reference voltage input circuit, short-circuit protection circuit, sample circuit, first charging inlet and second charging inlet.The input of protective circuit is connected to vehicle-mounted DC power supply.First filter circuit is connected between the first input end of the output of protective circuit and step-down frequency modulation module.The input of second filter circuit is connected the output of step-down frequency modulation module.FM circuit is connected second input of step-down frequency modulation module, and the reference voltage input circuit is connected the 3rd input of step-down frequency modulation module.Short-circuit protection circuit is connected between the output of the four-input terminal of step-down frequency modulation module and second filter circuit.Sample circuit is connected between the 5th input of the output of second filter circuit and step-down frequency modulation module.The output of second filter circuit also is connected with first charging inlet and second charging inlet.Transfer to the first input end of step-down frequency modulation module successively through protective circuit, first filter circuit from the electric current of vehicle-mounted DC power supply outflow; transfer to the output of second filter circuit then successively through the output of step-down frequency modulation module, export first charging inlet and second charging inlet to by the output of second filter circuit.
As mentioned above, the utility model vehicle charger circuit is connected with first charging inlet owing to the output at second filter circuit and second charging inlet makes this vehicle charger circuit that two charging inlets are provided, thereby make to adopt the charger of this charging circuit to charge, thereby save the shared space of charger the battery of the electronic product of two kinds of standards; The four-input terminal of step-down frequency modulation module is connected to the output of second filter circuit through short-circuit protection circuit, makes this vehicle charger circuit can not burn because of the first charging inlet short circuit or the second charging inlet short circuit, thereby saves use cost.
Description of drawings
In Figure of description
Fig. 1 is the block diagram of the utility model vehicle charger circuit.
Fig. 2 is the physical circuit figure of the utility model vehicle charger circuit.
The description of reference numerals of each element is as follows among the figure:
Vehicle-mounted DC power supply 100
Step-down frequency modulation module 13 second filter circuits 14
First charging inlet, 19 second charging inlets 20
Circuit input end Vin common ground end GND
The first input end I1 second input I2
The 3rd input I3 four-input terminal I4
The 5th input I5 output O1
The unidirectional zener diode D1 of bi-directional voltage stabilizing diode D3
Inductance L 1 resistance R 1～R11
Capacitor C 1～C8
Pin one～10,191～194,201～204
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 1, the utility model vehicle charger circuit comprises protective circuit 11, first filter circuit 12, step-down frequency modulation module 13, second filter circuit 14, FM circuit 15, reference voltage input circuit 16, sample circuit 17, short-circuit protection circuit 18, first charging inlet 19 and second charging inlet 20.The input of protective circuit 11 is connected to the output of vehicle-mounted DC power supply 100.First filter circuit 12 is connected between the first input end I1 of the output of protective circuit 11 and step-down frequency modulation module 13, and first filter circuit 12 is in order to the interference signal of filtering from the output of DC power supply.The input of second filter circuit 14 is connected to the output O1 of step-down frequency modulation module 13, and second filter circuit 14 is in order to the interference signal of filtering from step-down frequency modulation module 13.The second input I2 of step-down frequency modulation module 13 is connected with FM circuit 15, regulates the parameter of this FM circuit 15 and can adjust the output frequency of step-down frequency modulation module 13 and then prevent that outside electromagnetic riveting machine signal from disturbing the work of step-down frequency modulation module 13.The 3rd input I3 of step-down frequency modulation module 13 is connected with reference voltage input circuit 16, described reference voltage input circuit 16 provides a reference voltage for step-down frequency modulation module 13, the result that this reference voltage is compared with the direct voltage of step-down frequency modulation module 13 inside can adjust the ON time of step-down frequency modulation module 13 switch inside circuit, and then the duty ratio of the square wave of adjustment step-down frequency modulation module 13 internal circuits output is pressed step-down frequency modulation module 13 output galvanic currents.The four-input terminal I4 of step-down frequency modulation module 13 is connected to the output of second filter circuit 14 through short-circuit protection circuit 18.The 5th input I5 of step-down frequency modulation module 13 is connected to the output of second filter circuit 14 through sample circuit 17, and the relevant parameter of regulating this sample circuit 17 can make the output voltage of the output O1 of step-down frequency modulation module 13 change.Output at second filter circuit 14 also is connected with first charging inlet 19 and second charging inlet 20.
See also Fig. 1 and Fig. 2, in the present embodiment, the step-down frequency modulation module 13 of the utility model vehicle charger circuit is a MP4459 chip, the pin 8 and the pin 9 of MP4459 chip are defined as first input end I1, pin 8 and pin 9 are connected to circuit input end Vin, the pin 7 of MP4459 chip is defined as the second input I2, the pin two of MP4459 chip is defined as the 3rd input I3, the pin 3 of MP4459 chip is defined as four-input terminal I4, the pin 5 of MP4459 chip is defined as the 5th input I5, the pin 6 of MP4459 chip is connected to the common ground end GND of vehicle charger circuit, and the pin one of MP4459 chip is defined as output O1.Protective circuit 11, first filter circuit 12, second filter circuit 14, FM circuit 15, reference voltage input circuit 16, sample circuit 17, short-circuit protection circuit 18, first charging inlet 19 and second charging inlet 20 are for being connected the peripheral circuit of MP4459 chip.
The element of protective circuit 11 is bi-directional voltage stabilizing diode D3, and this bi-directional voltage stabilizing diode D3 is connected between circuit input end Vin and the common ground end GND, and it plays overvoltage protection in this circuit.
Reference voltage input circuit 16 is made up of unidirectional zener diode D1, this unidirectional zener diode D1 is connected between the pin two and common ground end GND of MP4459 chip, unidirectional zener diode D1 provides a reference voltage for the MP4459 chip, the ON time of the MP4459 of the may command as a result chip internal switching circuit that this reference voltage is compared with the direct voltage of MP4459 chip internal circuit, and then the duty ratio of the square wave of adjustment MP4459 chip internal circuit output is pressed MP4459 chip output galvanic current.
The element of short-circuit protection circuit 18 is a resistance R 11, and these resistance R 11 1 ends are connected between inductance L 1 and the capacitor C 5, and the other end is connected to the pin 3 of MP4459 chip.
The pin one 91 of first charging inlet 19 is connected between inductance L 1 and the capacitor C 6, and the pin one 94 of first charging inlet 19 is connected to common ground end GND.
The pin two 01 of second charging inlet 20 is connected between inductance L 1 and the capacitor C 6, the pin two 04 of second charging inlet 20 is connected to common ground end GND end, the pin two 02 of second charging inlet 20 is connected between the resistance R 7 and resistance R 8 of series connection after being connected to the pin one 92 of first charging inlet 19 again, the resistance R 7 of this series connection and resistance R 8 are connected between inductance L 1 and the common ground end GND, the pin two 03 of second charging inlet 20 be connected in again between the resistance R 9 and resistance R 10 of series connection after the pin one 93 of first charging inlet 19 is connected, the resistance R 9 and the resistance R 10 of series connection are connected between inductance L 1 and the common ground end GND, after adopting such connection, regulate the ratio between R7 and R8 or R9 and the R10, can be so that the pin two 02 of the voltage difference between the pin one 92 of first charging inlet 19 and the pin one 93 and second charging inlet 20 and the voltage difference between the pin two 03 be a plurality of values, thus the function of this vehicle charger circuit can be expanded as required.
In addition, the pin 3 of MP4459 chip also is connected with a control circuit 21, this control circuit 21 is made up of resistance R 1 and capacitor C 8, resistance R 1 is connected between the pin 4 and input Vin of MP4459 chip, capacitor C 8 is connected between the pin 4 and common ground end GND of MP4459 chip, and control circuit 21 is in order to the work of control MP4459 chip.The pin 4 of MP4459 chip is connected with a compensating circuit 22, this compensating circuit 22 is in order to the frequency loss of compensation MP4459 chip, compensating circuit 22 is made up of capacitor C 3, capacitor C 7 and resistance R 2, wherein, capacitor C 7 is connected between the pin 4 and common ground end GND of MP4459 chip, capacitor C 3 be connected between the pin 4 and common ground end GND of MP4459 chip after resistance R 2 is connected.Be connected with a capacitor C 4 between the pin one 0 of MP4459 chip and the pin one, this capacitor C 4 provides energy for the transistor of MP4459 chip internal.
When the utility model vehicle charger circuit working, electric current flow to the pin 8 and the pin 9 of MP4459 chip from input Vin, the pin 3 that flow to the MP4459 chip through resistance R 1 simultaneously owing to this input current makes the voltage of this pin 3 greater than its threshold voltage, at this moment, the MP4459 chip is started working, flowing into the pin 8 of MP4459 chip and the electric current of pin 9 exports from the pin one of MP4459 chip through MP4459 chip internal circuit, and then flow into the pin two 01 of first charging inlet, 19 pin ones 91 and second charging inlet 20 respectively, 19 pin one 91 and the voltage difference between the pin one 94 of first charging inlet are exactly the output voltage of this vehicle charger circuit, and the pin two 01 and the voltage between the pin two 04 of second charging inlet 20 are exactly the output voltage of this vehicle charger circuit.If this output voltage is greater than the voltage of required by electronic product, because the pin one 91 of first charging inlet 19 and pin one that the voltage between the pin one 94 equals the MP4459 chip and the voltage between the common ground end GND, therefore, the resistance of adjusting resistance R 4 or resistance R 5 can make the pin one of MP4459 chip and the voltage that the voltage between the common ground end GND equals required by electronic product.If when charging; short circuit between the pin two 01 of the short circuit or second charging inlet 20 and the pin two 04 between the pin one 91 of first charging inlet 19 and the pin one 94; at this moment; the voltage at resistance R 11 two ends equals the voltage of the pin 3 of MP4459 chip; this voltage is lower than the pin 3 predefined voltages of MP4459 chip; the MP4459 chip quits work, thus protection MP4459 chip.
In sum, the utility model vehicle charger circuit is connected between inductance L 1 and the capacitor C 6 by the pin one 91 of first charging inlet 19 and the pin one 94 of first charging inlet 19 is connected to that the pin two 01 of the common ground end GND end and second charging inlet 20 is connected between inductance L 1 and the capacitor C 6 and the pin two 04 of second charging inlet 20 is connected to common ground end GND, make this vehicle charger circuit that two charging inlets can be provided, thereby make to adopt the charger of this charging circuit to charge, save the shared space of charger the battery of the electronic product of two kinds of standards; And resistance R 11 1 ends are connected between inductance L 1 and the capacitor C 5, and being connected to the pin 3 of MP4459 chip, the other end burns the vehicle charger circuit to prevent first charging inlet 19 or 20 short circuits of second charging inlet, thereby prolong the useful life of this vehicle charger circuit, save use cost.
Claims (3)
1. vehicle charger circuit; comprise: protective circuit; first filter circuit; step-down frequency modulation module; second filter circuit; FM circuit; the reference voltage input circuit; short-circuit protection circuit; sample circuit; first charging inlet and second charging inlet; the input of protective circuit is connected to DC power supply; be connected with first filter circuit between the first input end of protective circuit output and step-down frequency modulation module; the output of step-down frequency modulation module is connected to second filter circuit; second input of step-down frequency modulation module is connected with FM circuit; the 3rd input of step-down frequency modulation module is connected with the reference voltage input circuit; the 5th input of step-down frequency modulation module is connected to the output of second filter circuit through sample circuit; the output of second filter circuit also is connected with two charging inlets, it is characterized in that: be connected with short-circuit protection circuit between the four-input terminal of step-down frequency modulation module and the output of second filter circuit.
2. vehicle charger circuit according to claim 1 is characterized in that: described short-circuit protection circuit has a resistance.
3. according to the described vehicle charger circuit of claim 2, it is characterized in that: described step-down frequency modulation module is the MP4459 chip, and this MP4459 chip has a control pin, and described resistance is connected between control pin and the charging inlet input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200589492U CN201130863Y (en) | 2007-10-26 | 2007-10-26 | Charger circuit for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200589492U CN201130863Y (en) | 2007-10-26 | 2007-10-26 | Charger circuit for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130863Y true CN201130863Y (en) | 2008-10-08 |
Family
ID=40018730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200589492U Expired - Fee Related CN201130863Y (en) | 2007-10-26 | 2007-10-26 | Charger circuit for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130863Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518557A (en) * | 2014-12-03 | 2015-04-15 | 许继电气股份有限公司 | Double-charging integrated charger for electric vehicles |
| CN108462227A (en) * | 2018-03-07 | 2018-08-28 | 深圳市亿道数码技术有限公司 | Realize the control system of the bis- chargings of DC and Micro USB |
-
2007
- 2007-10-26 CN CNU2007200589492U patent/CN201130863Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518557A (en) * | 2014-12-03 | 2015-04-15 | 许继电气股份有限公司 | Double-charging integrated charger for electric vehicles |
| CN104518557B (en) * | 2014-12-03 | 2017-11-03 | 国家电网公司 | The double electric automobile integrated chargers filled of one machine |
| CN108462227A (en) * | 2018-03-07 | 2018-08-28 | 深圳市亿道数码技术有限公司 | Realize the control system of the bis- chargings of DC and Micro USB |
| CN108462227B (en) * | 2018-03-07 | 2023-11-21 | 深圳市亿道数码技术有限公司 | Control system for realizing DC and Micro USB double charging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8716987B2 (en) | Electrical power supply arrangement and use thereof | |
| CN103647318B (en) | Communicating terminal, charge control method, device and circuit | |
| CN211107009U (en) | Vehicle-mounted charger integrating high-voltage DC-DC | |
| US7733053B2 (en) | Charging circuit for a vehicle charger | |
| CN106357108A (en) | DC boost high-voltage output circuit and DC boost power supply | |
| CN201781302U (en) | Integrated battery charger and circuit structure of direct current voltage stabilizing power supply | |
| CN205846782U (en) | A kind of intelligence transformation USB quick-charging circuit | |
| CN103532394A (en) | Continuously adjustable intelligent power module | |
| CN201860261U (en) | Boost circuit | |
| CN101860054B (en) | Charge management circuit of lithium-ion battery | |
| CN201130863Y (en) | Charger circuit for automobile | |
| CN201750187U (en) | Solar energy charging device | |
| CN101917042A (en) | Lithium battery charger and DC booster integrated circuit system | |
| CN104410259B (en) | A kind of charge pump multiphase interleaving technology based on striding capacitance multistep discharge and recharge | |
| CN101950993A (en) | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system | |
| CN202205861U (en) | Battery balanced device | |
| CN104979873A (en) | Circuit structure integrated with battery charger and direct-current booster | |
| CN110198135A (en) | Load detecting circuit and the power supply unit with dual output power supply | |
| CN209805675U (en) | Logic voltage conversion circuit applied to T-CON board | |
| CN107546815B (en) | Universal charger | |
| CN208806636U (en) | A kind of cellular phone power supplies circuit | |
| CN208062839U (en) | Cell managing device | |
| CN203193323U (en) | Mobile phone capable of outward charging | |
| CN206099754U (en) | Wide input voltage range's auxiliary source circuit | |
| WO2012021128A1 (en) | Efficient power supply/charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20091126 |