CN212992285U - Component junction box with battery piece group cascade current monitoring function and photovoltaic component - Google Patents

Abstract

The utility model discloses a take subassembly terminal box and photovoltaic module of battery piece group cascade current monitoring, the subassembly terminal box of taking battery piece group cascade current monitoring includes many series connection's battery cluster, battery cluster and preceding battery cluster and back the battery cluster is different to hold and connects, the battery cluster be located positive output, negative pole output not with adjacent the one end series connection that the battery cluster is connected prevents the anti-diode, still include with prevent the parallelly connected one-way current indicator of anti-diode syntropy. Through with prevent the one-way current pilot lamp that anti-diode syntropy was parallelly connected, after the battery cluster of the connection that corresponds broke down, the electric current in other battery clusters can be through one-way current pilot lamp, and the one-way current pilot lamp is lighted for maintainer can carry out quick fault location to photovoltaic module, can be accurate to the battery cluster moreover, has improved maintenance efficiency.

Description

Component junction box with battery piece group cascade current monitoring function and photovoltaic component

Technical Field

The utility model relates to a photovoltaic module technical field specifically relates to a take subassembly terminal box and photovoltaic module of battery piece group cascade current monitoring.

Background

Although the existing photovoltaic module is widely applied, the cost is high due to the application or some reasons.

The power of the single battery is usually very small and difficult to be directly utilized, and generally, a series of battery level serial and parallel connections and secondary packaging are performed to form an assembly with certain voltage, current and power, and then the assembly level serial and parallel connections are performed to form a direct current source which can be utilized.

According to the characteristic that the circuits are connected in series and in parallel, the series circuit has a barrel effect, the component running at the lowest power can clamp the power of the whole group string, and considerable power loss is caused, which is very common in a photovoltaic power generation system, and factors causing the power reduction of the component are also many, such as shadow shielding, hot spot effect, component self-damage and other adverse factors.

At present, the operation and maintenance data acquisition of a power station can not acquire component level data temporarily, so that faults can not be found for a long time, the operation and maintenance data acquisition mainly stays at an inverter level and an MPPT level, the data at the component level or a battery plate level are not acquired, the direct current side management and control is relatively simple and extensive, the intelligent degree is low, and the generated energy loss is usually huge.

SUMMERY OF THE UTILITY MODEL

The utility model provides a take subassembly terminal box and photovoltaic module of battery piece group cascade current monitoring realizes the hierarchical fault location of battery cluster, improves maintenance efficiency.

In order to solve the technical problem, the utility model provides a take subassembly terminal box of battery piece group cascade current monitoring, battery cluster including many series connection, battery cluster and preceding battery cluster and back one the battery cluster is the strange end and connects, the battery cluster be located anodal output, negative pole output not with adjacent the one end series connection that the battery cluster is connected prevents the anti-diode, still include with prevent the parallelly connected one-way current pilot lamp of anti-diode syntropy.

The one-way current indicator lamp is a copper oxide rectifier with a light-emitting element, a selenium rectifier with a light-emitting element or a light-emitting diode.

Wherein, the quantity of one-way current pilot lamp is a plurality of.

And the adjacent one-way current indicator lamps are one-way current indicator lamps with different light-emitting colors.

The junction box comprises a junction box main body and is characterized by further comprising a photoelectric alarm which is arranged on the junction box main body and used for detecting whether the one-way current indicator lamp emits light or not.

The communication device is connected with the photoelectric alarm and used for sending an alarm of the photoelectric alarm to the outside.

In addition, the embodiment of the utility model provides a photovoltaic module is still provided, include as above the subassembly terminal box of electrified pond piece group cascade current monitoring.

The embodiment of the utility model provides a take group of batteries cascade current monitoring's subassembly terminal box and photovoltaic module compares with prior art and has following beneficial effect:

take subassembly terminal box and photovoltaic module of battery pack cascade current monitoring through with prevent the one-way current pilot lamp that anti-reverse diode syntropy is parallelly connected, after the battery cluster of the connection that corresponds breaks down, the electric current in other battery strings can be through one-way current pilot lamp, and the one-way current pilot lamp is lighted for maintainer can carry out quick fault location to photovoltaic module, can be accurate to the battery string moreover, has improved maintenance efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an assembly junction box with a battery pack cascade current monitoring according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of an assembly junction box with a battery pack cascade current monitoring according to an embodiment of the present disclosure, as shown in fig. 1.

In a specific embodiment, the utility model provides a subassembly terminal box of electrified pond piece group cascade current monitoring, battery cluster 20 including many series connection, battery cluster 20 and former battery cluster 20 and latter battery cluster 20 is the difference end and connects, battery cluster 20 be located positive output, negative pole output not with adjacent the one end series connection that battery cluster 20 is connected prevents reverse diode 40, still include with prevent reverse diode syntropy parallelly connected one-way current pilot lamp 50.

Through with prevent reverse diode 40 syntropy parallel connection's one-way current pilot lamp 50, after battery string 20 that corresponds the connection breaks down, the electric current in other battery strings 20 can be through one-way current pilot lamp 50, and one-way current pilot lamp 50 lights for maintainer can carry out quick fault location to photovoltaic module, can be accurate to battery string 20 moreover, has improved maintenance efficiency.

Utilize its one-way conductivity, one-way current pilot lamp 50 is put through after the battery string 20 trouble that corresponds makes the electric current flow through and realize giving out light, the utility model discloses in do not do the restriction to one-way current pilot lamp 50's concrete structure, one kind in one-way current pilot lamp 50 is for taking the copper oxide rectifier of light emitting component, the selenium rectifier of taking light emitting component or emitting diode, or the one-way current pilot lamp 50 of other structures.

In order to reduce the maintenance cost and the size of the device, the unidirectional current indicator lamp 50 is generally a light emitting diode, and the use cost can be greatly reduced by using the single-wire conduction characteristic of the diode and using the light emitting diode as the single-wire current indicator lamp 50.

In the present invention, the number of the unidirectional current indicator lights 50 is not limited, and generally corresponds to the number of the corresponding battery strings 20, and the number of the battery strings 20 in the corresponding assembly may be two or more, and due to the process, the reliability of some battery strings 20 may be higher, the reliability of others may be relatively lower, and the unidirectional current indicator lights 50 may be connected only to the battery strings 20 with lower reliability, but in order to further improve the location of the fault and avoid the omission of the fault, the number of the unidirectional current indicator lights 50 is generally multiple.

The utility model discloses in set up a plurality of one-way current pilot lamps 50, can be the same colour, also can be different colours, but for the convenience to go on the location and distinguish, it is general adjacent one-way current pilot lamp 50 is the different one-way current pilot lamp 50 of luminous colour.

The colors of the lights are different, and may be only adjacent to each other, and may be ABAB type, or may be all different, and may be ABCD type, which is not limited by the present invention.

In order to further improve the maintenance efficiency of the maintenance personnel, in one embodiment, the assembly junction box with battery pack cascade current monitoring further comprises a photoelectric alarm arranged on the junction box main body 10 for detecting whether the one-way current indicator lamp 50 emits light or not.

Through setting up photoelectric alarm for after detecting that one-way current pilot lamp 50 is luminous, maintainer can carry out the quick location through sound, avoid because too much photovoltaic cell piece leads to only relying on the light that devices such as emitting diode sent to be too weak and probably neglect or be difficult to quick location, and one-way current pilot lamp 50 can help the battery cluster 20 of quick location trouble on the subassembly.

In order to further improve the maintenance efficiency, in one embodiment, the module junction box with the battery plate set cascade current monitoring further comprises a communicator connected with the photoelectric alarm and used for sending an alarm of the photoelectric alarm to the outside.

The alarm of the photoelectric alarm is directly output to maintenance personnel through the communicator, so that the patrol frequency of the maintenance personnel is reduced, the working intensity is reduced, and the working efficiency is improved.

In one embodiment, as shown in fig. 1, a terminal box with a battery pack cascade current monitoring function is provided, specifically, corresponding current indicator lamps 50 are configured according to the number of battery pack string loops 30, when the module operates normally, the current loops 30 flow to the battery packs 01# to 24#, 25# to 48#, and 49# to 72#, at this time, the anti-reverse diodes 40 of all the loops 30 are in a reverse bias non-conducting state, the current indicator lamps 50 are not lighted, when a corresponding battery pack string loop 30 is blocked by current (such as accumulated dust), the state of the anti-reverse diode 40 of the loop 30 in which the current loop is located is changed from a reverse bias state to a forward conducting state, the corresponding battery pack loop 30 is short-circuited by the anti-reverse diode 40, the current indicator lamps 50 are simultaneously lighted, the lighted color is related to real-time current in the circuit, different blocking degrees are different, and the display flickering colors are different, operation and maintenance personnel can distinguish the scope size of trouble according to the colour scintillation of difference, accomplishes the very first time high efficiency and handles, avoids the secondary enlargement and the generated energy loss of accident.

In addition, the embodiment of the utility model provides a photovoltaic module is still provided, include as above the subassembly terminal box of electrified pond piece group cascade current monitoring.

Because photovoltaic module includes foretell subassembly terminal box of taking battery piece group cascade current monitoring, has the same beneficial effect, the utility model discloses this is not repeated.

To sum up, the embodiment of the utility model provides a with battery piece group cascade current monitoring's subassembly terminal box and photovoltaic module, through with prevent the parallelly connected one-way current pilot lamp of anti-diode syntropy, after the battery cluster of the connection that corresponds breaks down, the electric current in other battery strings can light the one-way current pilot lamp through one-way current pilot lamp for maintainer can carry out quick fault location to photovoltaic module, can be accurate to the battery string moreover, has improved maintenance efficiency.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a take subassembly terminal box of battery piece group cascade current monitoring which characterized in that includes many series connection's battery cluster, the battery cluster with preceding battery cluster and the latter battery cluster are the different end and are connected, the battery cluster be located positive output, negative pole output and adjacent one end series connection that the battery cluster is not connected prevent anti-diode, still include with prevent anti-diode syntropy parallel connection's one-way current pilot lamp.

2. The modular junction box with current monitoring in a battery string cascade of claim 1 wherein the one-way current indicator light is a copper oxide rectifier with light emitting elements, a selenium rectifier with light emitting elements or a light emitting diode.

3. The device junction box with battery pack cascade current monitoring of claim 2, wherein the number of the unidirectional current indicator lamps is plural.

4. The device junction box with battery pack cascade current monitoring of claim 3, wherein adjacent unidirectional current indicator lights are unidirectional current indicator lights with different colors of illumination.

5. The modular junction box with battery pack string level current monitoring of claim 4, further comprising a photo alarm disposed on the junction box body for detecting whether the one-way current indicator lights are illuminated.

6. The modular junction box with battery pack cascade current monitoring of claim 5, further comprising a communicator connected to the optoelectronic alarm for sending the alarm of the optoelectronic alarm to the outside.

7. A photovoltaic module comprising a module junction box with current monitoring of a series of cell strings according to any of claims 1 to 6.

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