CN207753450U - A kind of electric car charger charging end error-polarity connection warning device - Google Patents
A kind of electric car charger charging end error-polarity connection warning device Download PDFInfo
- Publication number
- CN207753450U CN207753450U CN201820201774.4U CN201820201774U CN207753450U CN 207753450 U CN207753450 U CN 207753450U CN 201820201774 U CN201820201774 U CN 201820201774U CN 207753450 U CN207753450 U CN 207753450U
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- CN
- China
- Prior art keywords
- charging end
- electric car
- warning device
- car charger
- emitting diode
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- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model is related to power protection fields, more particularly to a kind of electric car charger charging end error-polarity connection warning device, it include the power input with positive and negative anodes, switch transformer, charging end and battery incoming end with positive and negative anodes, the power input, the switch transformer, the charging end and the battery incoming end are connected in parallel with each other, the charging end includes the control unit MCU being serially connected and Light-emitting diode LED 1, the anode of the Light-emitting diode LED 1 is connect with described control unit MCU, cathode is connected and is grounded with the second diode D2.The present apparatus is not only simple in structure, at low cost, and good working effect, can effectively be shown to the charged state of battery, so as to avoid the generation of safety accident under abnormal condition.
Description
Technical field
The utility model is related to power protection field more particularly to a kind of electric car charger charging end error-polarity connections
Warning device.
Background technology
The mode that electric car charger on the market alarms to charging end error-polarity connection at present is relatively simple, needs charging
Device can alarm to charging end error-polarity connection when working, and be easy in this way so that user takes for charger damage, or even makes
At life safety accident.Therefore, it is badly in need of a kind of effective solution method.
Utility model content
The purpose of the utility model is to overcome above-mentioned problem of the prior art, provide a kind of electric car charger charging
Error-polarity connection warning device is held, should be the one of the negative voltage anode for having terminated battery, to straight when charging end error-polarity connection
The bright LED1 prompts alarm of contact；When the non-reversal connection of charging end polarity, negative electricity crimps the cathode of battery, can not directly light LED1,
Diode (LED) 1 is controlled by control unit MCU, mistake will not be caused to light, to protect the lives and properties of people to pacify
Entirely.
Above-mentioned purpose is to be achieved through the following technical solutions：
A kind of electric car charger charging end error-polarity connection warning device includes power input with positive and negative anodes, opens
Close transformer, charging end and the battery incoming end with positive and negative anodes, the power input, described fills the switch transformer
Electric end and the battery incoming end are connected in parallel with each other, and the charging end includes the control unit MCU being serially connected and luminous two
The anode of pole pipe LED1, the Light-emitting diode LED 1 are connect with described control unit MCU, and cathode is connected with the second diode D2
And it is grounded.
Further, first resistor R1 and second resistance R2 are also in series in the anode of the Light-emitting diode LED 1.
Further, the first diode is also in series between the Light-emitting diode LED 1 and described control unit MCU
D1。
Advantageous effect
A kind of electric car charger charging end error-polarity connection warning device described in the utility model, passes through control unit MCU
Diode when battery is just connecing control battery charging complete is bright；When battery reversal connection, diode is directly lighted to reach alarm
Purpose.The present apparatus is not only simple in structure, at low cost, and good working effect, can effectively be carried out to the charged state of battery
It has been shown that, so as to avoid the generation of safety accident under abnormal condition.
Description of the drawings
Fig. 1 is a kind of structural representation of electric car charger charging end error-polarity connection warning device described in the utility model
Figure.
Specific implementation mode
The utility model is described in further detail with reference to figure and embodiment.
As shown in Figure 1, a kind of electric car charger charging end error-polarity connection warning device, includes the power supply with positive and negative anodes
Input terminal, switch transformer, charging end and the battery incoming end with positive and negative anodes, the power input, the switch transformation
Device, the charging end and the battery incoming end are connected in parallel with each other, and the charging end includes the control unit MCU being serially connected
It is connect with described control unit MCU with the anode of Light-emitting diode LED 1, the Light-emitting diode LED 1, cathode and the two or two pole
Pipe D2 connects and is grounded.Specifically, it is generally the case that battery of electric vehicle voltage generally can be in 48V or more, and the second diode D2 is such as
If breakdown, electric current flows through the second diode D2 and directly enters into ground wire, and impact will not be caused to cause to damage to diode (LED) 1.This
Switch transformer described in device is mainly used for isolating.
As a kind of optimization of electric car charger charging end error-polarity connection warning device described in the utility model, described
The anode of Light-emitting diode LED 1 is also in series with first resistor R1 and second resistance R2.Specifically, it is generally the case that electric vehicle electricity
Cell voltage generally can be in 48V or more, if reversal connection, and 1 both end voltage of diode (LED) can be very high, takes in 1 anode of diode (LED)
Series connection first resistor R1 and second resistance R2 in place's the second diode D2 of series winding and is grounded at cathode, can effectively prevent in this way
Diode (LED) 1 is damaged in reversal connection overtension.
As a kind of advanced optimizing for electric car charger charging end error-polarity connection warning device described in the utility model,
The first diode D1 is also in series between the Light-emitting diode LED 1 and described control unit MCU.Specifically, described first
Diode D1 can be prevented when reversal connection on the pin of control unit MCU because overtension damages.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any people for being familiar with the technology is in the technical scope disclosed by the utility model, it is contemplated that variation or replace
It changes all to cover and be within the protection scope of the utility model.Therefore, the scope of protection of the utility model should be protected with claim
Subject to the range of shield.
Claims (3)
1. a kind of electric car charger charging end error-polarity connection warning device includes power input, switch with positive and negative anodes
Transformer, charging end and the battery incoming end with positive and negative anodes, which is characterized in that the power input, the switch transformation
Device, the charging end and the battery incoming end are connected in parallel with each other, and the charging end includes the control unit MCU being serially connected
And light emitting diode（LED1）, the light emitting diode（LED1）Anode connect with described control unit MCU, cathode and second
Diode（D2）It connects and is grounded.
2. a kind of electric car charger charging end error-polarity connection warning device according to claim 1, which is characterized in that
The light emitting diode（LED1）Anode be also in series with first resistor（R1）And second resistance（R2）.
3. a kind of electric car charger charging end error-polarity connection warning device according to claim 1, which is characterized in that
The light emitting diode（LED1）The first diode is also in series between described control unit MCU（D1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201774.4U CN207753450U (en) | 2018-02-06 | 2018-02-06 | A kind of electric car charger charging end error-polarity connection warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201774.4U CN207753450U (en) | 2018-02-06 | 2018-02-06 | A kind of electric car charger charging end error-polarity connection warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753450U true CN207753450U (en) | 2018-08-21 |
Family
ID=63154509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820201774.4U Active CN207753450U (en) | 2018-02-06 | 2018-02-06 | A kind of electric car charger charging end error-polarity connection warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207753450U (en) |
-
2018
- 2018-02-06 CN CN201820201774.4U patent/CN207753450U/en active Active
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