CN209119872U - A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function - Google Patents
A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function Download PDFInfo
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- CN209119872U CN209119872U CN201920012420.XU CN201920012420U CN209119872U CN 209119872 U CN209119872 U CN 209119872U CN 201920012420 U CN201920012420 U CN 201920012420U CN 209119872 U CN209119872 U CN 209119872U
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Abstract
The utility model discloses a kind of new-energy automobile vehicle-mounted charging powers for having three-stage overload protection function, including input filter module, PWM control module, primary transform circuit module, voltage pressure stabilizing detects compensating module, three-stage over-current detection module, mobile device fast charge protocol detection module and output filter module, the input terminal of the input filter module connects DC input voltage, the output end of input filter module connects primary transform circuit module, point is protected with different safe overloads when occurring different charging voltages in the utility model use process, PWM control module is set to turn off primary transform modular circuit by three-stage overload protecting circuit, it has turned it off output circuit and has stopped charging.Efficiently avoid fast fill device and mobile charging device overload overheat when charging.
Description
Technical field
The utility model relates to charging technique field, specifically a kind of new energy vapour for having three-stage overload protection function
Vehicle vehicle-mounted charging power.
Background technique
Currently, automobile mounted charging quickly power supply is also transported therewith wine and is given birth to as economic development and people's living standard improve.
The most of vehicle-mounted QC3.0 fast charge power supply of tradition is all the one-part form overload protection i.e. overcurrent point protection in different voltages at present
Point is identical to be caused in high-voltage charge, occurs the risk of charging overload overheat when charging current is excessive.
Utility model content
It fills the purpose of this utility model is to provide a kind of new-energy automobile for having three-stage overload protection function is vehicle-mounted
Power supply, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions:
A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function, including input filter module,
PWM control module, primary transform circuit module, voltage pressure stabilizing detection compensating module, three-stage over-current detection module, mobile device are fast
Protocol detection module and output filter module are filled, the input terminal of the input filter module connects DC input voltage, input filter
The output end of module connects primary transform circuit module, and primary transform circuit module connects output filter module, in output filter module
Voltage pressure stabilizing detection compensating module, three-stage over-current detection module and mobile device fast charge protocol detection mould is also respectively connected
Block, it is fast that the input terminal connection voltage pressure stabilizing of PWM control module detects compensating module, three-stage over-current detection module and mobile device
Protocol detection module is filled, the output end of PWM control module connects primary transform circuit module.
As a preferred embodiment of the present invention: the output filter module is also connected with DC output end.
As a preferred embodiment of the present invention: the input filter module is capacitive filter.
As a preferred embodiment of the present invention: the three-stage over-current detection module is the resistor being connected in parallel.
As a preferred embodiment of the present invention: the range of the DC input voltage is 10-30V.
Compared with prior art, the utility model has the beneficial effects that occurring in the utility model use process different
Point is protected with different safe overloads when charging voltage, PWM control module shutdown master is made by three-stage overload protecting circuit
Conversion module circuit has turned it off output circuit and has stopped charging.Efficiently avoid fast fill device and mobile charging when charging
Apparatus overload overheat.
Detailed description of the invention
Fig. 1 is the principles of the present invention structure chart.
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1 referring to FIG. 1-2: a kind of to have the new of three-stage overload protection function in the utility model embodiment
Energy automobile vehicle-mounted charging power, comprising: input filter module, PWM control module, primary transform circuit module, voltage pressure stabilizing inspection
Survey compensating module, three-stage over-current detection module, mobile device fast charge protocol detection module and output filter module.
DC input voltage exports charging after passing sequentially through input filter module, primary transform circuit module and output filter module
Voltage pressure stabilizing detection compensating module, three-stage over-current detection module and movement are also respectively connected in output filter module for voltage
Equipment fast charge protocol detection module, voltage pressure stabilizing detect compensating module, three-stage over-current detection module, mobile device fast charge agreement
Detection module acquires the voltage of output filter module, electric current, charge protocol information respectively and is transferred to PWM control module, PWM control
Molding block controls primary transform circuit module for collected voltage, and then achievees the purpose that adjust output.
Embodiment 2: on the basis of embodiment 1, the specific embodiment circuit of the design is as shown in Fig. 2, drawing, U1 are
PWM control module and primary transform circuit module, U2 are mobile device fast charge protocol detection module, when insertion mobile device is filled
When electric, fast charge protocol detection module can detect output equipment and with output equipment carrying out shake communication, finally select optimal charging electricity
Pressure charges to mobile device.Different charging of mobile devices voltage is different, such as: charging voltage has 5V 9V 12V.If
5V 9V 12V is the same overload protection point, then when high voltage is such as 12V if will appear output power it is excessive (output power=
U x I) overheat is overloaded to output mobile equipment charge.The utility model is selecting different charging electricity to different mobile devices
In the charging process of pressure, when in case of unusual condition such as overload situations, circuit can be detected by three-stage over-current detection module
Charging of mobile devices electric current.
RS1 and RS2 is three-stage over-current detection element, is converted to detection voltage quilt by the charging current of RS1 and RS2
It is sampled in chipware U1, using three sections of current detecting threshold, that is, 5V, 9V and 12V current limit threshold voltages in chipware U1,
When different voltages charging, different electric currents is detected, when overload occurs, by electric current on detection RS1 and RS2, is converted to phase
The detectable voltage signals answered are compared with current limit threshold voltage each in chipware U1, when the load will be more than current limit
Threshold triggering pwm control circuit turns it off primary transform circuit, and then turns off output, protects mobile charging device.Each section of voltage
Overload protection point calculates are as follows:
Iocp=V(range threshold)÷[(RS1*RS2)÷(RS1+RS2)]。
Its V (range threshold) is different when 5V, 9V, 12V, more high then V (range threshold) value of voltage more
It is low, and RS1 and RS2 value remains unchanged, therefore voltage is higher, mobile charging device overload protection point is lower i.e. in different output
Power when overloading under the conditions of charging voltage remains unchanged, and which achieves will not be different because of occurring under high-voltage charge state
Often when power it is excessive and make charging equipment overload overheat, that is, protect mobile charging device when different charging voltages are filled
The risk that overload overheat is generated when existing unusual condition, improves product and mobile device security reliability.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of new-energy automobile vehicle-mounted charging power for having three-stage overload protection function, including input filter module, PWM
Control module, primary transform circuit module, voltage pressure stabilizing detect compensating module, three-stage over-current detection module, mobile device fast charge
Protocol detection module and output filter module；It is characterized in that, the input terminal of the input filter module connects DC input voltage,
The output end of input filter module connects primary transform circuit module, and primary transform circuit module connects output filter module, output filter
Voltage pressure stabilizing detection compensating module, three-stage over-current detection module and mobile device fast charge agreement are also respectively connected in wave module
Detection module, input terminal connection voltage pressure stabilizing detection compensating module, three-stage over-current detection module and the movement of PWM control module
The output end of equipment fast charge protocol detection module, PWM control module connects primary transform circuit module.
2. the new-energy automobile vehicle-mounted charging power according to claim 1 for having three-stage overload protection function, special
Sign is that the output filter module is also connected with DC output end.
3. the new-energy automobile vehicle-mounted charging power according to claim 1 for having three-stage overload protection function, special
Sign is that the input filter module is capacitive filter.
4. the new-energy automobile vehicle-mounted charging power according to claim 1 for having three-stage overload protection function, special
Sign is that the three-stage over-current detection module is the resistor being connected in parallel.
5. the new-energy automobile vehicle-mounted charge electricity according to claim 1 to 4 for having three-stage overload protection function
Source, which is characterized in that the range of the DC input voltage is 10-30V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012420.XU CN209119872U (en) | 2019-01-04 | 2019-01-04 | A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012420.XU CN209119872U (en) | 2019-01-04 | 2019-01-04 | A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function |
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| Publication Number | Publication Date |
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| CN209119872U true CN209119872U (en) | 2019-07-16 |
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| CN201920012420.XU Active CN209119872U (en) | 2019-01-04 | 2019-01-04 | A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234693A (en) * | 2020-08-28 | 2021-01-15 | 珠海格力电器股份有限公司 | Bus charging control device, driver and bus charging control method thereof |
-
2019
- 2019-01-04 CN CN201920012420.XU patent/CN209119872U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234693A (en) * | 2020-08-28 | 2021-01-15 | 珠海格力电器股份有限公司 | Bus charging control device, driver and bus charging control method thereof |
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