CN103840448A - High-voltage connecting device with arc protection function - Google Patents
High-voltage connecting device with arc protection function Download PDFInfo
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- CN103840448A CN103840448A CN201410126701.XA CN201410126701A CN103840448A CN 103840448 A CN103840448 A CN 103840448A CN 201410126701 A CN201410126701 A CN 201410126701A CN 103840448 A CN103840448 A CN 103840448A
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- protection function
- arc protection
- charging
- connecting device
- preliminary filling
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Abstract
The invention relates to a high-voltage connecting device with an arc protection function. According to the high-voltage connecting device with the arc protection function, two pre-charging circuits which are connected in parallel are connected between a power supply system and a power utilization system in series. Each pre-charging circuit is formed by series connection of a contactor and a pre-charging resistor, wherein temperature detecting points are arranged on the surface of the pre-charging resistor. Current measuring points are connected to the front end of each pre-charging circuit. The application range of the two pre-charging circuits is wider, and three values of resistance from large to small are available for each pre-charging resistor. The equivalent capacitance of electric equipment can be measured, and then the maximum allowable closed differential pressure value can be obtained more accurately.
Description
Technical field
The present invention relates to a kind of direct-current high-voltage system jockey, particularly a kind of high-voltage connection device with arc protection function.
Background technology
In the process of two direct-current high-voltage system connections, owing to there is very high voltage differential, cause producing electric arc in the moment connecting, very easily burn connection line, serious also can damage equipment.The high pressure arc protection connecting circuit generally adopting now generally only has a precharge loop, road, the electric current of precharge and time are substantially fixing, just there will be precharge time long if using electricity system changes, the problem of Efficiency Decreasing, also there will be the danger of burning preliminary filling resistance; The condition that judges voltage is fixed, and can not adapt to the variation of using electricity system; The electric current in pre-charge process can not be detected, the size of using electricity system equivalent capacity cannot be calculated; Can not detect the temperature of preliminary filling resistance, if there is system repeatedly connect, opening operation, there will be the overheated and situation of burning of preliminary filling resistance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high-voltage connection device with arc protection function is provided.
The object of the present invention is achieved like this: a kind of high-voltage connection device with arc protection function, it is characterized in that being serially connected with 2 precharging circuits parallel with one another between electric power system and using electricity system, precharging circuit is made up of contactor and preliminary filling resistance serial connection, preliminary filling resistive surface is provided with NTC type thermistor, and precharging circuit front end is connected with current measurement point sampling resistor.
Between described electric power system and using electricity system, be also parallel with contactor.
The scope of application in two-way precharge loop is more extensive, makes preliminary filling resistance have from big to small three resistances available; The equivalent capacity of power consumption equipment can also be measured, thereby the maximum value that allows closed pressure reduction can be more accurately drawn.
The invention has the advantages that: can adapt to the change of using electricity system, there will not be long Efficiency Decreasing problem precharge time, the situation of avoiding occurring burning preliminary filling resistance and relay; Can calculate by current detecting the size of the equivalent capacity of using electricity system, thereby accurately draw the maximum value that allows closed pressure reduction; Can detect preliminary filling resistance problems, prevent from burning because system connection, opening operation repeatedly occur that resistance is overheated.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in the figure, between electric power system DC and using electricity system C, be serially connected with 2 precharging circuits parallel with one another, precharging circuit is made up of contactor K3, K4 and preliminary filling resistance R1, R2 serial connection, preliminary filling resistive surface is provided with NTC type thermistor T1, T2 as temperature detecting point, and precharging circuit front end is connected with sampling resistor I as current measurement point.Between electric power system and using electricity system, be also parallel with contactor K1, K2.
Two-way precharge loop makes its scope of application more extensive, if independent closed K3, preliminary filling resistance is R1; If independent closed K4, preliminary filling resistance is R2; If closed K3, K4 simultaneously, preliminary filling resistance is R1, R2 parallel connection.It is available that preliminary filling resistance has three resistances from big to small like this.
The equivalent capacity of power consumption equipment can be measured by current measurement point I, thereby the maximum value that allows closed pressure reduction can be individual more accurately drawn.Contactor K2 can closed condition be that U1-U2 is less than and maximumly allows closed pressure reduction, otherwise can damage contactor.The maximum inversely proportional relation of equivalent capacity that allows closed pressure reduction and using electricity system, electric capacity more pressure reduction should be less.
Temperature detecting point T1, T2 detect the temperature of resistance R 1, R2 at any time, prevent system connection repeatedly of Yin Yin, opening operation and make that resistance R is overheated burns.
Claims (2)
1. one kind has the high-voltage connection device of arc protection function, it is characterized in that being serially connected with 2 precharging circuits parallel with one another between electric power system and using electricity system, precharging circuit is made up of contactor and preliminary filling resistance serial connection, preliminary filling resistive surface is provided with NTC type thermistor, and precharging circuit front end is connected with current measurement point sampling resistor.
2. the high-voltage connection device with arc protection function according to claim 1, is characterized in that being also parallel with contactor between described electric power system and using electricity system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126701.XA CN103840448A (en) | 2014-04-01 | 2014-04-01 | High-voltage connecting device with arc protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126701.XA CN103840448A (en) | 2014-04-01 | 2014-04-01 | High-voltage connecting device with arc protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840448A true CN103840448A (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410126701.XA Pending CN103840448A (en) | 2014-04-01 | 2014-04-01 | High-voltage connecting device with arc protection function |
Country Status (1)
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| CN (1) | CN103840448A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645263A (en) * | 2016-07-20 | 2018-01-30 | 湖南中车时代电动汽车股份有限公司 | Electric machine controller |
| CN109842096A (en) * | 2017-11-28 | 2019-06-04 | Keb自动化两合公司 | Electronic protection circuit |
| JP2021106453A (en) * | 2019-12-26 | 2021-07-26 | 日立Astemo株式会社 | Load circuit device and method for controlling the same |
| KR102626216B1 (en) * | 2023-08-02 | 2024-01-17 | 주식회사 파두 | Inrush current limiting circuit for power system |
| EP4343997A1 (en) * | 2022-09-20 | 2024-03-27 | Bamboo Dynamics Corporation., Ltd. | Electronic device and method for protecting equipment from voltage surge damage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090230766A1 (en) * | 2008-03-12 | 2009-09-17 | Fuji Jukogyo Kabushiki Kaisha | Vehicle power supply device |
| CN101610030A (en) * | 2008-06-16 | 2009-12-23 | 联咏科技股份有限公司 | Power supply change-over device |
| KR20110114029A (en) * | 2010-04-12 | 2011-10-19 | 한국전력공사 | Precharging control apparatus and precharging control method |
| CN202602347U (en) * | 2012-03-27 | 2012-12-12 | 郑州宇通客车股份有限公司 | Pre-charging circuit with reverse charging function for new energy vehicles |
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
-
2014
- 2014-04-01 CN CN201410126701.XA patent/CN103840448A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090230766A1 (en) * | 2008-03-12 | 2009-09-17 | Fuji Jukogyo Kabushiki Kaisha | Vehicle power supply device |
| CN101610030A (en) * | 2008-06-16 | 2009-12-23 | 联咏科技股份有限公司 | Power supply change-over device |
| KR20110114029A (en) * | 2010-04-12 | 2011-10-19 | 한국전력공사 | Precharging control apparatus and precharging control method |
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
| CN202602347U (en) * | 2012-03-27 | 2012-12-12 | 郑州宇通客车股份有限公司 | Pre-charging circuit with reverse charging function for new energy vehicles |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645263A (en) * | 2016-07-20 | 2018-01-30 | 湖南中车时代电动汽车股份有限公司 | Electric machine controller |
| CN109842096A (en) * | 2017-11-28 | 2019-06-04 | Keb自动化两合公司 | Electronic protection circuit |
| CN109842096B (en) * | 2017-11-28 | 2021-06-29 | Keb自动化两合公司 | Electronic protection circuit |
| JP2021106453A (en) * | 2019-12-26 | 2021-07-26 | 日立Astemo株式会社 | Load circuit device and method for controlling the same |
| JP7353170B2 (en) | 2019-12-26 | 2023-09-29 | 日立Astemo株式会社 | Load circuit device and method of controlling the load circuit device |
| EP4343997A1 (en) * | 2022-09-20 | 2024-03-27 | Bamboo Dynamics Corporation., Ltd. | Electronic device and method for protecting equipment from voltage surge damage |
| KR102626216B1 (en) * | 2023-08-02 | 2024-01-17 | 주식회사 파두 | Inrush current limiting circuit for power system |
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Application publication date: 20140604 |