CN201674248U - Surge-proof charging device - Google Patents

Surge-proof charging device Download PDF

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Publication number
CN201674248U
CN201674248U CN2010201956414U CN201020195641U CN201674248U CN 201674248 U CN201674248 U CN 201674248U CN 2010201956414 U CN2010201956414 U CN 2010201956414U CN 201020195641 U CN201020195641 U CN 201020195641U CN 201674248 U CN201674248 U CN 201674248U
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CN
China
Prior art keywords
surge
charging device
protection unit
charging
input terminal
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 - Lifetime
Application number
CN2010201956414U
Other languages
Chinese (zh)
Inventor
刘剑
Original Assignee
王广富
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王广富 filed Critical 王广富
Priority to CN2010201956414U priority Critical patent/CN201674248U/en
Application granted granted Critical
Publication of CN201674248U publication Critical patent/CN201674248U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a surge-proof charging device, comprising an alternating-current input terminal and a surge protection unit; the alternating-current input terminal is connected with a switch power supply unit which is connected with a charging output terminal; and one end of the surge protection unit is connected with the alternating-current input terminal, and the other end thereof is connected with the charging output terminal. By arranging the surge protection unit, the surge proof charging device provided by the utility model prevents surge current generated by lightning from damaging the charging device, ensures the normal use of the charging device and simultaneously guarantees the safety of electric equipment in charging.

Description

A kind of anti-surge charging device
Technical field
The utility model relates to a kind of charging device, particularly a kind of anti-surge charging device.
Background technology
Charging device is mainly used in small electric apparatus is charged, generally comprise alternating current input terminal, switching power supply and charging lead-out terminal, by switching power supply alternating current is carried out transformation and rectification, thereby the direct current of output certain voltage on the charging lead-out terminal, the direct current by this certain voltage charges to electrical equipment.
The charging interval of charging device generally all compares, and much needs more than 10 hours, and phenomenons such as thunder and lightning take place in this process probably, and thunder and lightning can form surge current when taking place in charging device, the electrical equipment damage that causes charging device even charging.
Summary of the invention
At above defective; the anti-surge charging device that the utility model provides by the surge protection unit is set, prevents the infringement of the surge current of thunder and lightning generation to charging device; guarantee the normal use of charging device, guaranteed the safety of the electric equipment that charging simultaneously.
The technical scheme in the invention for solving the technical problem is:
A kind of anti-surge charging device; comprise the alternating current input terminal; this alternating current input terminal connects switching power supply; this switching power supply connects the charging lead-out terminal; also comprise the surge protection unit; this surge protection unit one end connects above-mentioned alternating current input terminal, and the other end of this surge protection unit connects above-mentioned charging lead-out terminal.
Preferably, above-mentioned surge protection unit further comprises piezo-resistance, discharge tube and Thermal Cutoffs.
Operation principle: when surge current when the alternating current input terminal enters the charger internal circuit; piezo-resistance two ends in the surge protection unit form high voltage; thereby the resistance value of piezo-resistance sharply descends and produces instantaneous large-current, avoids the damage of surge current to switching power supply.Also be provided with Thermal Cutoffs in the surge protection unit in addition, when the temperature of piezo-resistance is too high, thereby Thermal Cutoffs will disconnect the protection piezo-resistance.
Beneficial effect: the anti-surge charging device that the utility model provides; by the surge protection unit is set; prevent the infringement of surge current that thunder and lightning produces, guarantee the normal use of charging device, guaranteed the safety of the electric equipment that charging simultaneously charging device.
Description of drawings
Fig. 1 is the connection diagram of the utility model embodiment 1.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment the utility model is described in further detail.
Embodiment 1
As shown in Figure 1; the anti-surge charging device that the utility model embodiment 1 provides; comprise the alternating current input terminal; this alternating current input terminal connects switching power supply; this switching power supply connects the charging lead-out terminal; also comprise the surge protection unit, this surge protection unit one end connects above-mentioned alternating current input terminal, and the other end of this surge protection unit connects above-mentioned charging lead-out terminal.
And the surge protection unit further comprises piezo-resistance, discharge tube and Thermal Cutoffs.
Operation principle: when surge current when the alternating current input terminal enters the charger internal circuit; piezo-resistance two ends in the surge protection unit form high voltage; thereby the resistance value of piezo-resistance sharply descends and produces instantaneous large-current, avoids the damage of surge current to switching power supply.Also be provided with Thermal Cutoffs in the surge protection unit in addition, when the temperature of piezo-resistance is too high, thereby Thermal Cutoffs will disconnect the protection piezo-resistance.
Beneficial effect: the anti-surge charging device that the utility model provides; by the surge protection unit is set; prevent the infringement of surge current that thunder and lightning produces, guarantee the normal use of charging device, guaranteed the safety of the electric equipment that charging simultaneously charging device.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (2)

1. anti-surge charging device; comprise the alternating current input terminal; this alternating current input terminal connects switching power supply; this switching power supply connects the charging lead-out terminal; it is characterized in that; also comprise the surge protection unit, this surge protection unit one end connects above-mentioned alternating current input terminal, and the other end of this surge protection unit connects above-mentioned charging lead-out terminal.
2. anti-surge charging device according to claim 1 is characterized in that above-mentioned surge protection unit further comprises piezo-resistance, discharge tube and Thermal Cutoffs.
CN2010201956414U 2010-05-17 2010-05-17 Surge-proof charging device Expired - Lifetime CN201674248U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201956414U CN201674248U (en) 2010-05-17 2010-05-17 Surge-proof charging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201956414U CN201674248U (en) 2010-05-17 2010-05-17 Surge-proof charging device

Publications (1)

Publication Number Publication Date
CN201674248U true CN201674248U (en) 2010-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201956414U Expired - Lifetime CN201674248U (en) 2010-05-17 2010-05-17 Surge-proof charging device

Country Status (1)

Country Link
CN (1) CN201674248U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104936814A (en) * 2013-01-31 2015-09-23 罗伯特·博世有限公司 Overvoltage protection device for protecting onboard power system of electric vehicle from electrical overvoltage and corresponding method and electric vehicle having overvoltage protection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104936814A (en) * 2013-01-31 2015-09-23 罗伯特·博世有限公司 Overvoltage protection device for protecting onboard power system of electric vehicle from electrical overvoltage and corresponding method and electric vehicle having overvoltage protection device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Ningbo Aoboer Electric Appliance Co., Ltd.

Assignor: Wang Guangfu

Contract record no.: 2011330000379

Denomination of utility model: Surge-proof charging device

Granted publication date: 20101215

License type: Exclusive License

Record date: 20110429

CX01 Expiry of patent term

Granted publication date: 20101215

CX01 Expiry of patent term