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
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- 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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- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000003245 working effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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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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Abstract
本实用新型涉及电源保护技术领域，特别涉及一种电动车充电器充电端极性反接报警装置，包括具有正负极的电源输入端、开关变压器、充电端和具有正负极的电池接入端，所述电源输入端、所述开关变压器、所述充电端和所述电池接入端相互并联连接，所述充电端包括相互串联的控制单元MCU和发光二极管LED1，所述发光二极管LED1的正极与所述控制单元MCU连接，负极与第二二极管D2串联并接地。本装置不仅结构简单，成本低，而且工作效果好，能有效的对电池的充电状态进行显示，从而避免了非正常情况下安全事故的发生。
The utility model relates to the technical field of power supply protection, in particular to an electric vehicle charger charging terminal polarity reverse connection alarm device, which includes a power supply input terminal with positive and negative poles, a switching transformer, a charging terminal and a battery connection with positive and negative poles. terminal, the power input terminal, the switching transformer, the charging terminal and the battery access terminal are connected in parallel with each other, the charging terminal includes a control unit MCU and a light emitting diode LED1 connected in series, and the light emitting diode LED1 The anode is connected to the control unit MCU, and the cathode is connected in series with the second diode D2 and grounded. The device not only has simple structure and low cost, but also has good working effect and can effectively display the charging state of the battery, thereby avoiding the occurrence of safety accidents under abnormal conditions.
Description
技术领域technical field
本实用新型涉及电源保护技术领域，尤其涉及一种电动车充电器充电端极性反接报警装置。The utility model relates to the technical field of power supply protection, in particular to a polarity reverse connection alarm device for a charger of an electric vehicle charger.
背景技术Background technique
目前市面上的电动车充电器对充电端极性反接报警的方式较为简单，需要在充电器工作时方可对充电端极性反接进行报警，这样容易使得用户误以为充电器损坏，甚至造成人生安全事故。因此，急需一种有效的解决办法。At present, the electric vehicle chargers on the market have a relatively simple way of alarming the reverse polarity of the charging terminal. It is necessary to alarm the reverse polarity of the charging terminal when the charger is working. This will easily make the user mistakenly think that the charger is damaged, or even cause life safety accidents. Therefore, an effective solution is urgently needed.
实用新型内容Utility model content
本实用新型的目的在于克服上述现有技术的问题，提供了一种电动车充电器充电端极性反接报警装置，当充电端极性反接时，本该为负电压的一端接了电池的正极，从而直接点亮LED1提示报警；当充电端极性未反接时，负电压接电池的负极，无法直接点亮LED1，由控制单元MCU对二极管LED1进行控制，不会造成错误点亮，从而保护了人的生命财产安全。The purpose of the utility model is to overcome the above-mentioned problems of the prior art, and to provide an electric vehicle charger charging terminal polarity reverse alarm device, when the charging terminal polarity is reversed, the terminal that should be negative voltage is connected to the battery The positive pole of the battery, so as to directly light up LED1 to prompt an alarm; when the polarity of the charging terminal is not reversed, the negative voltage is connected to the negative pole of the battery, and LED1 cannot be directly lit, and the control unit MCU controls the diode LED1, which will not cause wrong lighting , thereby protecting the safety of human life and property.
上述目的是通过以下技术方案来实现：Above-mentioned purpose is to realize through following technical scheme:
一种电动车充电器充电端极性反接报警装置，包括具有正负极的电源输入端、开关变压器、充电端和具有正负极的电池接入端，所述电源输入端、所述开关变压器、所述充电端和所述电池接入端相互并联连接，所述充电端包括相互串联的控制单元MCU和发光二极管LED1，所述发光二极管LED1的正极与所述控制单元MCU连接，负极与第二二极管D2串联并接地。An electric vehicle charger charging terminal polarity reverse alarm device, comprising a power input terminal with positive and negative poles, a switching transformer, a charging terminal and a battery access terminal with positive and negative poles, the power input terminal, the switch The transformer, the charging terminal and the battery access terminal are connected in parallel with each other, the charging terminal includes a control unit MCU and a light emitting diode LED1 connected in series, the positive pole of the light emitting diode LED1 is connected to the control unit MCU, and the negative pole is connected to the control unit MCU. The second diode D2 is connected in series and grounded.
进一步地,在所述发光二极管LED1的正极还串联有第一电阻R1和第二电阻R2。Further, a first resistor R1 and a second resistor R2 are connected in series at the anode of the light emitting diode LED1.
进一步地,在所述发光二极管LED1与所述控制单元MCU之间还串联有第一二极管D1。Further, a first diode D1 is connected in series between the light emitting diode LED1 and the control unit MCU.
有益效果Beneficial effect
本实用新型所述一种电动车充电器充电端极性反接报警装置，通过控制单元MCU在电池正接控制电池充电完成时的二极管亮；当电池反接时，直接点亮二极管来达到报警的目的。本装置不仅结构简单，成本低，而且工作效果好，能有效的对电池的充电状态进行显示，从而避免了非正常情况下安全事故的发生。The electric vehicle charger charging terminal polarity reverse connection alarm device described in the utility model controls the diode to light up when the battery is positively connected to control the battery charging through the control unit MCU; when the battery is reversely connected, the diode is directly lit to achieve alarming. Purpose. The device not only has simple structure and low cost, but also has good working effect and can effectively display the charging state of the battery, thereby avoiding the occurrence of safety accidents under abnormal conditions.
附图说明Description of drawings
图1为本实用新型所述一种电动车充电器充电端极性反接报警装置的结构示意图。FIG. 1 is a structural schematic diagram of a polarity reverse polarity alarm device for an electric vehicle charger according to the present invention.
具体实施方式Detailed ways
下面结合图和实施例对本实用新型作进一步详细说明。Below in conjunction with figure and embodiment the utility model is described in further detail.
如图1所示，一种电动车充电器充电端极性反接报警装置，包括具有正负极的电源输入端、开关变压器、充电端和具有正负极的电池接入端，所述电源输入端、所述开关变压器、所述充电端和所述电池接入端相互并联连接，所述充电端包括相互串联的控制单元MCU和发光二极管LED1，所述发光二极管LED1的正极与所述控制单元MCU连接，负极与第二二极管D2串联并接地。具体的，通常情况下，电动车电池电压一般会在48V以上,第二二极管D2如若被击穿，电流流经第二二极管D2直接走入地线，不会对二极管LED1造成冲击导致损坏。本装置中所述开关变压器主要用于隔离。As shown in Figure 1, an electric vehicle charger charging terminal polarity reverse connection alarm device includes a power input terminal with positive and negative poles, a switching transformer, a charging terminal and a battery access terminal with positive and negative poles, the power supply The input terminal, the switching transformer, the charging terminal and the battery access terminal are connected in parallel with each other, and the charging terminal includes a control unit MCU and a light-emitting diode LED1 connected in series, and the anode of the light-emitting diode LED1 is connected to the control The unit MCU is connected, and the cathode is connected in series with the second diode D2 and grounded. Specifically, under normal circumstances, the battery voltage of an electric vehicle is generally above 48V. If the second diode D2 is broken down, the current will flow through the second diode D2 and go directly to the ground wire, which will not cause impact on the diode LED1. cause damage. The switching transformer described in this device is mainly used for isolation.
作为本实用新型所述一种电动车充电器充电端极性反接报警装置的优化,在所述发光二极管LED1的正极还串联有第一电阻R1和第二电阻R2。具体的，通常情况下，电动车电池电压一般会在48V以上，如若反接，二极管LED1两端电压会很高，采取在二极管LED1正极处串联第一电阻R1和第二电阻R2，负极处串连第二二极管D2并接地，这样可以有效的防止二极管LED1在反接情况下电压过高造成损坏。As an optimization of the electric vehicle charger charging terminal polarity reverse connection alarm device described in the utility model, a first resistor R1 and a second resistor R2 are connected in series at the anode of the light emitting diode LED1. Specifically, under normal circumstances, the battery voltage of an electric vehicle is generally above 48V. If the connection is reversed, the voltage at both ends of the diode LED1 will be very high. The first resistor R1 and the second resistor R2 are connected in series at the positive pole of the diode LED1, and connected in series at the negative pole. The second diode D2 is connected to the ground, which can effectively prevent the diode LED1 from being damaged due to excessive voltage in the case of reverse connection.
作为本实用新型所述一种电动车充电器充电端极性反接报警装置的进一步优化,在所述发光二极管LED1与所述控制单元MCU之间还串联有第一二极管D1。具体的，所述第一二极管D1可防止反接时控制单元MCU的引脚上因电压过高造成损坏。As a further optimization of the electric vehicle charger charging terminal polarity reverse connection alarm device described in the utility model, a first diode D1 is connected in series between the light emitting diode LED1 and the control unit MCU. Specifically, the first diode D1 can prevent the pins of the control unit MCU from being damaged due to overvoltage during reverse connection.
以上所述，仅为本实用新型较佳的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉该技术的人在本实用新型所揭露的技术范围内，均可想到的变化或替换都涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应该以权利要求保护的范围为准。The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, any person familiar with the technology within the technical scope disclosed in the utility model can think of Changes or replacements are all within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.
Claims (3)
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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN207753450U true CN207753450U (en) | 2018-08-21 |
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| CN201820201774.4U Expired - Fee Related CN207753450U (en) | 2018-02-06 | 2018-02-06 | A kind of electric car charger charging end error-polarity connection warning device |
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- 2018-02-06 CN CN201820201774.4U patent/CN207753450U/en not_active Expired - Fee Related
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