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Bypass relay junction box

A junction box and relay technology, applied in the field of photovoltaic systems, can solve problems such as energy consumption, heat generation, and affecting the normal operation of the system, and achieve the effect of high power output

Inactive Publication Date: 2015-07-29
JIANGSU JIUDING SOLAR ENERGY SYST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in the intelligent detection junction box used in the photovoltaic system, the bypass circuit mainly uses Schott diodes. Since the diodes are prone to a series of problems such as heat generation and energy consumption during operation, these imperfect characteristics of the diodes have a negative impact on the performance of the junction box. At the same time, the bypass conduction voltage of the diode is usually a fixed value. In theory, it can only be conducted when the voltage is zero. When there is still a weak voltage in a certain cell group in the photovoltaic module, the diode will be It may not be turned on and affect the normal operation of the entire system

Method used

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  • Bypass relay junction box

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Embodiment Construction

[0011] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0012] like figure 1 A bypass relay junction box is shown, which realizes the bypass conduction of the junction box by receiving instructions issued by the monitoring center 7 and transmitted by the radio frequency controller 6 . The junction box has a junction box body 1, and the junction box body 1 includes a junction box body 1-1 and a monitoring box body 1-2 snapped to the junction box body 1-1. The junction box body 1 is provided with four terminal blocks 2 at intervals, the terminal blocks 2 are connected to the battery sheet group 4 through the bus bar 3, and the monitoring box body 1-2 is provided with an integrated circuit b...

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Abstract

The invention discloses a bypass relay junction box. Bypass conduction of the junction box is realized by receiving instructions sent by a monitoring center and transmitted by a radio frequency controller. The junction box comprises a junction box body, at least two wire holders are arranged in the junction box body and connected with a cell set through bus bars, and a relay turned on or off by receiving transmission signals of the radio frequency controller is electrically connected between the adjacent wire holders. On and off of the relay arranged in the junction box are controlled by the monitoring center, bypass control of a photovoltaic system is realized, and the bypass relay junction box has the greatest advantages that much heat cannot be generated in bypass conduction, bypass conduction voltage can be intelligently set, and maximum power output is realized.

Description

technical field [0001] The invention relates to the technical field of photovoltaic systems, in particular to a bypass relay junction box connected in parallel with photovoltaic module cell groups. Background technique [0002] At present, in the intelligent detection junction box used in the photovoltaic system, the bypass circuit mainly uses Schott diodes. Since the diodes are prone to a series of problems such as heat generation and energy consumption during operation, these imperfect characteristics of the diodes have a negative impact on the performance of the junction box. At the same time, the bypass conduction voltage of the diode is usually a fixed value. In theory, it can only be conducted when the voltage is zero. When there is still a weak voltage in a certain cell group in the photovoltaic module, the diode will be It may not be conducted and affect the normal operation of the entire system. Contents of the invention [0003] The technical problem to be solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/34H02J13/00
CPCH02J13/00H02S40/00Y02B90/20Y02E10/50Y04S40/126
Inventor 吕纪坤王德昆
Owner JIANGSU JIUDING SOLAR ENERGY SYST
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