CN102916393A

CN102916393A - Solar battery protector, solar battery pack and solar battery protective chip

Info

Publication number: CN102916393A
Application number: CN2012103790718A
Authority: CN
Inventors: 祝厉华
Original assignee: JAMES YUPENG
Current assignee: FUJIAN LONG-TEK ELECTRONIC TECHNOLOGY Co.,Ltd.
Priority date: 2012-10-09
Filing date: 2012-10-09
Publication date: 2013-02-06
Anticipated expiration: 2032-10-09
Also published as: CN102916393B

Abstract

The invention relates to a solar battery protector, a solar battery pack and a solar battery protective chip. The solar battery protector comprises a first Schottky diode, a first potential comparator module, a first diode and a first alarm module. The first Schottky diode is electrically connected to a first solar battery module for realizing clamp protection to the same. A first input end of the first potential comparator module is electrically connected with an anode of the first solar battery module, a second input end of the first potential comparator module is electrically connected with an cathode of the first diode, an anode of the first diode is further electrically connected with a cathode of the first solar battery module, and accordingly, the first potential comparator module can compare voltage of the two ends of the first diode to voltage of the two ends of the first Schottky diode, generate a control signal according to a comparison result and then output the control signal from an output end thereof. Further, the output end of the first potential comparator module is electrically connected with the first alarm module, and the first alarm module is electrically connected with a cathode of a second solar batter module.

Description

Protecting solar cell device, solar battery group and protecting solar cell chip

Technical field

The present invention relates to area of solar cell, relate in particular to a kind of protecting solar cell device, solar battery group and protecting solar cell chip.

Background technology

Solar cell is a kind of device that solar energy is converted into electric energy owing to photovoltaic effect.It comprises several semiconductor photo diodes, when solar irradiation is to the photodiode surface, produce electron-hole pair, move to the interface of P-N knot respectively in electronics and hole, entered respectively N-type place (negative pole) and the P type place (positive pole) of battery by the interface electric field separates, be that photodiode becomes electric energy to the luminous energy of the sun, generation current.When being together in series or parallel, many batteries just can become solar cell array that larger power output is arranged.That solar cell has is permanent, spatter property and flexibility three large advantages, just more and more is subject to people's favor.

According to the electricity generating principle of solar panel, under normal sunshine environment, when the illumination of part component sheets is blocked, can produce reverse voltage, this has reduced the generating capacity of solar panel.Supply power voltage and the sense of current in order to guarantee battery pack in the prior art, cell panel can increase a Schottky diode that plays the clamper protective effect, and the clamp voltage value is at 0.1V～1.0V.Schottky diode in producing, install, using may damage and can't play a protective role but the shortcoming of prior art is solar panel.Therefore need to the performance of solar panel Schottky diode in producing, install, using be detected.

Summary of the invention

Technical problem to be solved by this invention is; a kind of protecting solar cell device, solar battery group and protecting solar cell chip are provided, solve the problem that can't detect the performance of solar panel Schottky diode in producing, install, using in the prior art.

In order to address the above problem, the invention provides a kind of protecting solar cell device, comprise one first Schottky diode, the negative pole of described the first Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, are used for described the first solar module is clamped the pressure protection; Described protecting solar cell device further comprises one first potential comparator module, one first diode and one first alarm module; The first input end electricity of described the first potential comparator module is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the first diode, the anodal further electricity of described the first diode is connected to the negative pole of described the first solar module, described the first potential comparator module can more described the first diode two ends and the voltage at the first Schottky diode two ends thus, and produce control signal and export by output according to comparative result; The output electricity of described the first potential comparator module is connected to described the first alarm module; Described the first alarm module electricity is connected to the negative pole of one second solar module adjacent with described the first solar module.

Described the first potential comparator module further comprises the first triode of a positive-negative-positive and the second triode of a positive-negative-positive; The emitter electricity of described the first and second triodes is connected to the positive pole of described the first solar module; The base stage electricity of described the first triode is connected to the negative pole of described the first diode, and the collector electrode electricity of described the first triode is connected to the negative pole of described the second solar module; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage of described the first diode and the voltage of the first Schottky diode above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to described the first alarm module, and described the first alarm module is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.

Described protecting solar cell device further comprises a warning handover module; The first input end electricity of described warning handover module is connected to the positive pole of described the first solar module, the second input electricity is connected to described the second alarm module, the output electricity of described warning handover module is connected to described the first alarm module, be used for when detecting described the second alarm module work, close described the first alarm module by the output output control signal of described warning handover module.

Described protecting solar cell device further comprises one second potential comparator module, one second diode and one second alarm module; The first input end electricity of described the second potential comparator module is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the second diode, described the second diode is connected with the first diode and electricity is connected to the negative pole of described the first solar module, described the second potential comparator module can more described the first diode and the voltage at the second diode two ends and the first Schottky diode two ends thus, and produces control signal and export by the output of described the second potential comparator module according to comparative result; The output electricity of described the second potential comparator module is connected to described the second alarm module; Described the second alarm module electricity is connected to the negative pole of described the second solar module.

Described the second potential comparator module further comprises the 3rd triode of a positive-negative-positive and the 4th triode of a positive-negative-positive; The emitter electricity of described the third and fourth triode is connected to the positive pole of described the first solar module; The base stage electricity of described the 3rd triode is connected to the negative pole of described the second diode, and the collector electrode electricity of described the 3rd triode is connected to the negative pole of described the second solar module; The collector electrode of described the 3rd triode also electricity is connected to the base stage of described the 4th triode, when being used for comparative result at the voltage sum at described the first diode and the second diode two ends and the voltage at the first Schottky diode two ends above a predefined threshold values, make described the 3rd triode cut-off, and make described the 4th triode conducting; The collector electrode electricity of described the 4th triode is connected to described the second alarm module, and described the second alarm module is used for sending the alarm signal of described the first Schottky diode non-normal working when described the 4th triode conducting.

Described protecting solar cell device further comprises one second Schottky diode, one the 3rd potential comparator module, one the 3rd diode and one the 3rd alarm module; The negative pole of described the second Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, are used for described the second solar module is clamped the pressure protection; The first input end electricity of described the 3rd potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 3rd diode, the further electricity of the negative pole of described the 3rd diode is connected to the positive pole of described the second solar module, described the 3rd potential comparator module can more described the 3rd diode two ends and the voltage at the second Schottky diode two ends thus, and produce control signal and export by the output of described the 3rd potential comparator module according to comparative result; The output electricity of described the 3rd potential comparator module is connected to described the 3rd alarm module; Described the 3rd alarm module electricity is connected to the positive pole of described the first solar module.

Described the 3rd potential comparator module further comprises the 5th triode of a NPN type and the 6th triode of a NPN type; The emitter electricity of the described the 5th and the 6th triode is connected to the negative pole of described the second solar module; The base stage electricity of described the 5th triode is connected to the positive pole of the 3rd diode, and the collector electrode electricity of described the 5th triode is connected to the positive pole of described the first solar module; The collector electrode of described the 5th triode also electricity is connected to the base stage of the 6th triode, when being used for comparative result at the voltage at described the 3rd diode two ends and the voltage at the second Schottky diode two ends above a predefined threshold values, make described the 5th triode cut-off, and make described the 6th triode conducting; The collector electrode electricity of described the 6th triode is connected to described the 3rd alarm module, and described the 3rd alarm module is used for sending the alarm signal of described the second Schottky diode normal operation when described the 6th triode conducting.

Described protecting solar cell device further comprises one the 4th potential comparator module, one the 4th diode and one the 4th alarm module; The first input end electricity of described the 4th potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 4th diode, described the 4th diode is connected with the 3rd diode and electricity is connected to the positive pole of described the second solar module, described the 4th potential comparator module can more described the 3rd diode and the voltage at the 4th diode two ends and the second Schottky diode two ends thus, and produces control signal and export by the output of described the 4th potential comparator module according to comparative result; The output electricity of described the 4th potential comparator module is connected to described the 4th alarm module; Described the 4th alarm module electricity is connected to the positive pole of described the first solar module.

Described the 4th potential comparator module further comprises the 7th triode of a NPN type and the 8th triode of a NPN type; The emitter electricity of the described the 7th and the 8th triode is connected to the negative pole of described the second solar module; The base stage electricity of described the 7th triode is connected to the positive pole of described the 4th diode, and the collector electrode electricity of described the 7th triode is connected to the positive pole of described the first solar module; The collector electrode of described the 7th triode also electricity is connected to the base stage of described the 8th triode, when being used for comparative result at the voltage sum at described the 3rd diode and the 4th diode two ends and the voltage at the second Schottky diode two ends above a predefined threshold values, make described the 7th triode cut-off, and make described the 8th triode conducting; The collector electrode electricity of described the 8th triode is connected to described the 4th alarm module; Described the 4th alarm module is used for sending the alarm signal of described the second Schottky diode non-normal working when described the 8th triode conducting.

In order to address the above problem, the present invention also provides a kind of solar battery group, comprises a plurality of solar modules and a solar module terminal box; Described solar battery group comprises an above-mentioned protecting solar cell device at least, described protecting solar cell device is connected on the circuit of described solar module terminal box, the negative pole of described first Schottky diode of described protecting solar cell device and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module of described a plurality of solar modules, be used for described the first solar module is clamped the pressure protection, the first input end electricity of the described first potential comparator module of described protecting solar cell device is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the first diode, the anodal further electricity of described the first diode is connected to the negative pole of described the first solar module, described the first potential comparator module can more described the first diode two ends and the voltage at the first Schottky diode two ends thus, and produce control signal and export by output according to comparative result; The output electricity of described the first potential comparator module is connected to described first alarm module of described protecting solar cell device; Described the first alarm module electricity is connected to the negative pole of one second solar module adjacent with described the first solar module of described a plurality of solar modules.

Described protecting solar cell device further comprises one second potential comparator module, one second diode and one second alarm module; The first input end electricity of described the second potential comparator module is connected to the positive pole of the first solar module, the second input electricity is connected to the negative pole of described the second diode, described the second diode is connected with the first diode and electricity is connected to the negative pole of described the first solar module, described the second potential comparator module can more described the first diode and the voltage at the second diode two ends and the first Schottky diode two ends thus, and produces control signal and export by the output of described the second potential comparator module according to comparative result; The output electricity of described the second potential comparator module is connected to the second alarm module; Described the second alarm module electricity is connected to the negative pole of described the second solar module.

Described protecting solar cell device further comprises one second Schottky diode, one the 3rd potential comparator module, one the 3rd diode and one the 3rd alarm module; The negative pole of described the second Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of described the second solar module, are used for described the second solar module is clamped the pressure protection; The first input end electricity of described the 3rd potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 3rd diode, the further electricity of the negative pole of described the 3rd diode is connected to the positive pole of described the second solar module, described the 3rd potential comparator module can more described the 3rd diode two ends and the voltage at the second Schottky diode two ends thus, and produce control signal and export by the output of described the 3rd potential comparator module according to comparative result; The output electricity of described the 3rd potential comparator module is connected to the 3rd alarm module; Described the 3rd alarm module electricity is connected to the positive pole of described the first solar module.

Described protecting solar cell device further comprises one the 4th potential comparator module, one the 4th diode and one the 4th alarm module; The first input end electricity of described the 4th potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 4th diode, described the 4th diode is connected with the 3rd diode and electricity is connected to the positive pole of described the second solar module, described the 4th potential comparator module can more described the 3rd diode and the voltage at the 4th diode two ends and the second Schottky diode two ends thus, and produces control signal and export by the output of described the 4th potential comparator module according to comparative result; The output electricity of described the 4th potential comparator module is connected to the 4th alarm module; Described the 4th alarm module electricity is connected to the positive pole of described the first solar module.

In order to address the above problem, the present invention also provides a kind of protecting solar cell chip, comprise one first Schottky diode, the negative pole of described the first Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, be used for described the first solar module is clamped the pressure protection, described protecting solar cell chip further comprises one first potential comparator module and one first diode, and described the first potential comparator module further comprises the first triode of a PNP/NPN type and the second triode of a PNP/NPN type; The emitter electricity of described the first and second triodes be connected to described the first solar module just/negative pole; The base stage electricity of described the first triode is connected to bearing/positive pole of described the first diode, and the collector electrode electricity of described the first triode is connected to bearing/positive pole of described the second solar module; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage at described the first diode two ends and the voltage at the first Schottky diode two ends above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to one first outside alarm module, and described the first alarm module is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.

The invention has the advantages that, by comprising that electricity connects a protecting solar cell device on the solar module terminal box circuit of a plurality of solar modules, potential comparator by described protecting solar cell device can be judged the change in voltage of solar cell, to reach to the demonstration of solar cell hot spot effect with to working the judgement that clamps the Schottky diode performance of pressing protective effect; Alarm module by described protecting solar cell device can conveniently show the off state of Schottky diode and to the demonstration of solar cell hot spot effect; And how many present invention can also expand protection detection line group number in the protecting solar cell device of connection according to the solar module of each solar module terminal box management.

The present invention be advantageous in that described protector can all adopt diode and triode to realize Compare Logic, thus can be designed to chip form, and technique is simple, and cheap for manufacturing cost.The protector of chip form can reduce the complexity of field connection, thereby improves the reliability of using.

Description of drawings

Fig. 1, the structure chart of the described solar battery group of the first embodiment of solar battery group of the present invention;

Fig. 2 A-2B, the structure chart of the described solar battery group of the second embodiment of solar battery group of the present invention;

Fig. 3, the structure chart of the described solar battery group of the 3rd embodiment of solar battery group of the present invention;

Fig. 4, the structure chart of the described solar battery group of the 4th embodiment of solar battery group of the present invention;

Fig. 5-9, the circuit diagram of the described solar battery group of embodiment of solar battery group of the present invention.

Embodiment

Elaborate below in conjunction with the embodiment of accompanying drawing to protecting solar cell device provided by the invention, solar battery group and protecting solar cell chip.

Provide at first by reference to the accompanying drawings the first embodiment of solar battery group of the present invention.

It is the structured flowchart of the described solar battery group of this embodiment shown in the accompanying drawing 1; comprise at least one the first solar module 101 and one second solar module 102; described a plurality of solar module is placed in the solar module terminal box 103; also comprise a protecting solar cell device 120; described protecting solar cell device 120 is connected on the circuit of described solar module terminal box 103, and described protecting solar cell device 120 comprises one first Schottky diode 121; one first potential comparator module 122; one first diode 123; one first alarm module 124.

Described the first solar module 101 and one second solar module 102 can be two adjacent substrings of adjacent two solar panels or same cell panel; The first solar module 101 is as protected detection battery module; and the second solar module 102 is used to described protecting solar cell device 120 that electric energy (in other embodiments, also can adopt an externally fed module to provide electric energy for described protecting solar cell device 120) is provided.The negative pole of described the first Schottky diode 121 and anodal respectively electricity are connected to positive pole and the negative pole of described the first solar module 101, are used for described the first solar module 101 is clamped the pressure protection; That is, the N district of described the first Schottky diode 121 links to each other with the positive pole of the first solar module 101, and the P district links to each other with the negative pole of described the first solar module 101.The first input end electricity of described the first potential comparator module 122 is connected to the positive pole of described the first solar module 101, the second input electricity is connected to the negative pole of described the first diode 123, the anodal further electricity of described the first diode 123 is connected to the negative pole of described the first solar module 101, described the first potential comparator module 122 can more described the first diode 123 two ends and the voltage at the first Schottky diode 121 two ends thus, and produce control signal and export by output according to comparative result; The output electricity of described the first potential comparator module 122 is connected to described the first alarm module 124; Described the first alarm module 124 is connected to the negative pole of described the second solar module 102 by electricity.

Continue with reference to the accompanying drawings 1, the first solar module 101 voltage constants of this solar battery group when the voltage of normal power generation (for example 〉=10V), the first potential comparator module 122 is by comparing the voltage at the first diode 123 two ends and the first Schottky diode 121 two ends, less than reservation threshold (for example obtain,-0.6V) result, thus keep described the first alarm module 124 to be in the state of not being activated.If the first solar module 101 voltage drops; when the first potential comparator module 122 passes through to compare the voltage at the first diode 123 two ends and the first Schottky diode 121 two ends; obtain more than or equal to described reservation threshold as a result the time; activate described the first alarm module 124, send that described the first solar module 101 stops to generate electricity, described the first Schottky diode 121 is in the alarm signal that pincers are pressed the normal operating conditions of protection.Wherein, the first diode 123 also can adopt the crystal diode of at least two series connection; Described the first alarm module 124 can be a light-emitting diode, after receiving the alarm control signal that described the first potential comparator module 122 sends, lights this light-emitting diode, sends alarm signal to the user; Described the first alarm module 124 also can be an audible-visual annunciator, and in other embodiments, described the first alarm module 124 also can be the I/O input/output module, realizes remote alarms control by transmission of wireless signals.

Described the first potential comparator module 122 can be the transistor potential comparator, also can adopt IC modular form potential comparator, come the change in voltage of solar cell is judged, to reach to the demonstration of solar cell hot spot effect with to the judgement of the performance of clamping diode (being Schottky diode).

The second triode that comprises the first triode of a positive-negative-positive and a positive-negative-positive take described the first potential comparator module 122 is example (triode also can as the NPN type, only need be adjusted accordingly connected mode); The emitter electricity of described the first and second triodes is connected to the positive pole of the first solar module 101; The base stage electricity of described the first triode is connected to the negative pole of the first diode 123, and the collector electrode electricity of described the first triode is connected to the negative pole of described the second solar module 102; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage of described the first diode 123 and the voltage of the first Schottky diode 121 above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to described the first alarm module 124.Described the first alarm module 124 is used for sending the alarm signal of described the first Schottky diode 121 normal operations when described the second triode conducting.

Next provide by reference to the accompanying drawings the second embodiment of solar battery group of the present invention.

It is the structured flowchart of the described solar battery group of this embodiment shown in the accompanying drawing 2A; different from accompanying drawing 1 illustrated embodiment is that described protecting solar cell device 120 also comprises one second potential comparator module 222, one second diode 223, one second alarm module 224.

The first input end electricity of described the second potential comparator module 222 is connected to the positive pole of described the first solar module 101, the second input electricity is connected to the negative pole of described the second diode 223, described the second diode 223 is connected with the first diode 123 and electricity is connected to the negative pole of described the first solar module 101, described the second potential comparator module 222 can more described the first diode 123 and the voltage at the second diode 223 two ends and the first Schottky diode 121 two ends thus, and produces control signal and export by the output of described the second potential comparator module 222 according to comparative result; The output electricity of described the second potential comparator module 222 is connected to described the second alarm module 224; Described the second alarm module 224 electricity are connected to the negative pole of described the second solar module 102.

Continue with reference to the accompanying drawings 2A, after described the first alarm module 124 sends the alarm signal of described the first Schottky diode 121 normal operations, if the first Schottky diode 121 opens circuit, be in abnormal operating state, can cause the first solar module 101 voltages to continue to descend rapidly, when the second potential comparator module 222 by the voltage sum at the first diode 123 and the second diode 223 two ends and the voltage at the first Schottky diode 121 two ends are compared, obtain more than or equal to reservation threshold as a result the time, activate described the second alarm module 224, send described the first solar module 101 and stop generating, described the first Schottky diode 121 is in the alarm signal of the abnormal operating state that has opened circuit.Wherein, the second diode 223 also can adopt the crystal diode of at least two series connection; Described the second alarm module 224 can be a light-emitting diode, after receiving the alarm control signal that the second potential comparator module 222 sends, lights this light-emitting diode, sends alarm signal to the user; Described the second alarm module 224 also can be an audible-visual annunciator, perhaps can realize by transmission of wireless signals the I/O input/output module of remote alarms control.

When if the first alarm module 124 and the second alarm module 224 are light-emitting diode, above-mentioned two light-emitting diodes can be homochromy diodes, and the alarm lamp by different numbers represents the state that solar cell is different; Also can be not homochromy diode, by sending different color tables the different state of solar cell is shown.

Still comprise that take described the second potential comparator module 222 the 4th triode of the 3rd triode of a positive-negative-positive and a positive-negative-positive is as example, wherein, the circuit connecting mode of the first potential comparator mould 122, the first diode 123, the first alarm module 124 and operation principle are referring to the description of accompanying drawing 1 illustrated embodiment.The emitter electricity of described the third and fourth triode is connected to the positive pole of described the first solar module 101; The base stage electricity of described the 3rd triode is connected to the negative pole of described the second diode 223; The collector electrode electricity of described the 3rd triode is connected to the negative pole of the second solar module 102; The collector electrode of described the 3rd triode also electricity is connected to the base stage of described the 4th triode, when being used for comparative result at the voltage sum at described the first diode 123 and the second diode 223 two ends and the voltage at described the first Schottky diode 121 two ends above a predefined threshold values, make described the 3rd triode cut-off, and make described the 4th triode conducting; The collector electrode electricity of described the 4th triode is connected to described the second alarm module 224.Described the second alarm module 224 is used for sending the alarm signal of described the first Schottky diode 121 non-normal workings when described the 4th triode conducting.

Described protecting solar cell device 120 can also comprise that a warning handover module 229(is as shown in Fig. 2 B); The first input end electricity of described warning handover module 229 is connected to the positive pole of described the first solar module 101, the second input electricity is connected to described the second alarm module 224, the output electricity of described warning handover module 229 is connected to described the first alarm module 124, be used for when detecting described the second alarm module 224 work, closing described the first alarm module 124 by the output output control signal of described warning handover module 229.Also namely when 224 work of the second alarm module, the first alarm module 124 just is in non operating state, be that synchronization only may have an alarm module to give the alarm, the operating personnel that more are conducive to detect judge the state that solar cell is different, and can reduce the loss of the first alarm module 124, prolong its useful life.

Next provide by reference to the accompanying drawings the 3rd embodiment of solar battery group of the present invention.

It is the structured flowchart of the described solar battery group of this embodiment shown in the accompanying drawing 3; different from accompanying drawing 1 illustrated embodiment is that described protecting solar cell device 120 also comprises one second Schottky diode 321, one the 3rd potential comparator module 322, one the 3rd diode 323 and one the 3rd alarm module 324.Wherein, the protective circuit that the first Schottky diode 121, the first potential comparator module 122, the first diode 123 and the first alarm module 124 form, as protected detection battery module with the first solar module 101, with the second solar module 102 as power supply (in other embodiments, also can adopt an externally fed module as power supply); The protective circuit that the second Schottky diode 321, the 3rd potential comparator module 322, the 3rd diode 323 and the 3rd alarm module 324 form; as protected detection battery module with the second solar module 102; with the first solar module 101 as power supply (in other embodiments, also can adopt an externally fed module as power supply).

The N district of described the second Schottky diode 321 links to each other with the positive pole of the second solar module 102; the P district of described the second Schottky diode 321 links to each other with the negative pole of the second solar module 102, is used for described the second solar module 102 is clamped the pressure protection.The first input end electricity of described the 3rd potential comparator module 322 is connected to the negative pole of the second solar module 102, the second input electricity is connected to the positive pole of described the 3rd diode 323, the further electricity of the negative pole of described the 3rd diode 323 is connected to the positive pole of described the second solar module 102, described the 3rd potential comparator module 322 can more described the 3rd diode 323 two ends and the voltage at the second Schottky diode 321 two ends thus, and produce control signal and export by the output of described the 3rd potential comparator module 322 according to comparative result; The output electricity of described the 3rd potential comparator module 322 is connected to described the 3rd alarm module 324; Described the 3rd alarm module 324 electricity are connected to the positive pole of described the first solar module 101.

The protective circuit that the second Schottky diode 321, the 3rd potential comparator module 322, the 3rd diode 323 and the 3rd alarm module 324 form is protected the operation principle of detection to the second solar module 102; protect the operation principle of detection identical with the protective circuit that the first Schottky diode 121 shown in the accompanying drawing 1, the first potential comparator module 122, the first diode 123 and the first alarm module 124 form to the first solar module 101, give unnecessary details no longer one by one herein.

Continue with reference to the accompanying drawings 3, comprise further that take described the 3rd potential comparator module the 6th triode of the 5th triode of a NPN type and a NPN type is as example (triode also can as positive-negative-positive, only need be adjusted accordingly with reference to 1 pair of connected mode of accompanying drawing); The emitter electricity of the described the 5th and the 6th triode is connected to the negative pole of described the second solar module 102; The base stage electricity of described the 5th triode is connected to the positive pole of described the 3rd diode 323; The collector electrode electricity of described the 5th triode is connected to the positive pole of described the first solar module 101; The collector electrode of described the 5th triode also electricity is connected to the base stage of described the 6th triode, when being used for comparative result at the voltage at described the 3rd diode 323 two ends and the voltage at the second Schottky diode 321 two ends above a predefined threshold values, make the cut-off of described the 5th triode, and make and obtain the 6th triode conducting; The collector electrode electricity of described the 6th triode is connected to described the 3rd alarm module 324.Described the 3rd alarm module 324 is used for sending described the second Schottky diode 321 and is in the alarm signal that pincers are pressed the normal operation of protection when described the 6th triode conducting.

Next provide by reference to the accompanying drawings the 4th embodiment of solar battery group of the present invention.

It is the structured flowchart of the described solar battery group of this embodiment shown in the accompanying drawing 4; comprise at least one the first solar module 101 and one second solar module 102; described a plurality of solar module is placed in the solar module terminal box 103; also comprise a protecting solar cell device 120, described protecting solar cell device 120 is connected on the circuit of described solar module terminal box 103.Described protecting solar cell device 120 comprises that the description of one first Schottky diode 121, one first potential comparator module 122, one first diode 123 and one first its connected mode of alarm module 124(and operation principle is referring to accompanying drawing 1 corresponding the description); The description of one second potential comparator module 222, one second diode 223 and one second its connected mode of alarm module 224(and operation principle is described referring to accompanying drawing 2A is corresponding); The description of one second Schottky diode 321, one the 3rd potential comparator module 322, one the 3rd diode 323 and one the 3rd its connected mode of alarm module 324(and operation principle is referring to accompanying drawing 3 corresponding descriptions); One the 4th potential comparator module 422, one the 4th diode 423 and one the 4th alarm module 424.

Wherein, the protective circuit that the first Schottky diode 121, the first potential comparator module 122, the first diode 123 and the first alarm module 124 form, and the protective circuit that forms of first Schottky diode 121, the second potential comparator module 222, the second diode 223 and the second alarm module 224, all with the first solar module 101 as protected detection battery module, with the second solar module 102 as power supply (in other embodiments, also can adopt an externally fed module as power supply); The protective circuit that the second Schottky diode 321, the 3rd potential comparator module 322, the 3rd diode 323 and the 3rd alarm module 324 form; and the protective circuit that forms of second Schottky diode 321, the 4th potential comparator module 422, the 4th diode 423 and the 4th alarm module 424; with the second solar module 102 as protected detection battery module; with the first solar module 101 as power supply (in other embodiments, also can adopt an externally fed module as power supply).

The first input end electricity of described the 4th potential comparator module 422 is connected to the negative pole of the second solar module 102, the second input electricity is connected to the positive pole of described the 4th diode 423, described the 4th diode 423 is connected with described the 3rd diode 323 and electricity is connected to the positive pole of described the second solar module 102, described the 4th potential comparator module 422 can more described the 3rd diode and the voltage at the 4th diode two ends and the second Schottky diode two ends thus, and produces control signal and export by the output of described the 4th potential comparator module 422 according to comparative result; The output electricity of described the 4th potential comparator module 422 is connected to described the 4th alarm module 424.Described the 4th alarm module 424 electricity are connected to the positive pole of described the first solar module 101.In other embodiments, between described the 3rd alarm module 324 and the 4th alarm module 424 a warning handover module can be set also, be used for when detecting described the 4th alarm module 424 work, closing described the 3rd alarm module 324 by the output output control signal of warning handover module.

The protective circuit that the second Schottky diode 321, the 4th potential comparator module 422, the 4th diode 423 and the 4th alarm module 424 form is protected the operation principle of detection to the second solar module 102; protect the operation principle of detection identical with the protective circuit that the first Schottky diode 121 shown in the accompanying drawing 2A, the second potential comparator module 222, the second diode 223 and the second alarm module 224 form to the first solar module 101, give unnecessary details no longer one by one herein.

Continue with reference to the accompanying drawings 4, comprise that take described the 4th potential comparator module the 8th triode of the 7th triode of a NPN type and a NPN type is as example (triode also can as positive-negative-positive, only need be adjusted accordingly connected mode with reference to accompanying drawing 2A); The emitter electricity of the described the 7th and the 8th triode is connected to the negative pole of described the second solar module 102; The base stage electricity of described the 7th triode is connected to the positive pole of the 4th diode 423; The collector electrode electricity of described the 7th triode is connected to the positive pole of described the first solar module 101; The collector electrode of described the 7th triode also electricity is connected to the base stage of described the 8th triode, when being used for comparative result at the voltage sum at described the 3rd diode 323 and the 4th diode 423 two ends and the voltage at the second Schottky diode 321 two ends above a predefined threshold values, make described the 7th triode cut-off, and make described the 8th triode conducting; The collector electrode electricity of described the 8th triode is connected to described the 4th alarm module 424.The second solar module 102 stops to generate electricity described the 4th alarm module 424, the second Schottky diode 321 is in the non-normal working alarm signal that has opened circuit for sending when described the 8th triode conducting.

The present invention is by comprising that electricity connects a protecting solar cell device on the solar module terminal box circuit of a plurality of solar modules, potential comparator by described protecting solar cell device can be judged the change in voltage of solar cell, to reach to the demonstration of solar cell hot spot effect with to working the judgement that clamps the Schottky diode performance of pressing protective effect; Alarm module by described protecting solar cell device can conveniently show the off state of Schottky diode and to the demonstration of the hot spot effect of solar panel; And how many present invention can also expand protection detection line group number in the protecting solar cell device of connection according to the solar module of each solar module terminal box management.

Next provide the embodiment of chip of the present invention.

Protecting solar cell device of the present invention can all adopt diode and triode to realize Compare Logic, therefore can be designed to chip form, comprise one first Schottky diode, the negative pole of described the first Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, are used for described the first solar module is clamped the pressure protection; Described protecting solar cell chip further comprises one first potential comparator module and one first diode, and described the first potential comparator module can comprise the first triode of a PNP/NPN type and the second triode of a PNP/NPN type; The emitter electricity of described the first and second triodes be connected to described the first solar module just/negative pole; The base stage electricity of described the first triode is connected to bearing/positive pole of described the first diode, and the collector electrode electricity of described the first triode is connected to bearing/positive pole of described the second solar module; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage at described the first diode two ends and the voltage at the first Schottky diode two ends above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to one first outside alarm module, and described the first alarm module is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.

The circuit connecting mode of described protecting solar cell chip can be described referring to accompanying drawing 5, and transistor BG7, BG3 adopt the PNP pipe in the chip, and the Veb saturation voltage of PNP pipe is-0.6V, and the pipe Vec pressure drop after saturated is-0.3V; The first diode can comprise the diode (as shown in FIG. D21, D22) of at least two series connection; The first outside alarm module adopts LED 3.

The negative pole of the first Schottky diode D1 and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module B1; The emitter electricity of the first and second triode BG7, the BG3 of positive-negative-positive is connected to the positive pole of described the first solar module B1; The base stage electricity of described the first triode BG7 is connected to the diode D21 of series connection, the negative pole of D22, and the collector electrode electricity of described the first triode BG7 is connected to the negative pole of described the second solar module B2; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode BG3, when being used for comparative result at the voltage at diode D21, D22 two ends and the voltage at the first Schottky diode D1 two ends above a predefined threshold values, make described the first triode BG7 cut-off, and make described the second triode BG3 conducting; The collector electrode electricity of described the second triode BG3 is connected to the first outside alarm module LED 3, and LED 3 is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.Its operation principle is given unnecessary details referring to the description of accompanying drawing 5 correspondences herein no longer one by one.

In other embodiments, the first and second triodes also can adopt NPN transistor, and its circuit connecting mode can adjust accordingly shown in 7 with reference to the accompanying drawings.Protecting solar cell chip of the present invention can also comprise that many groups comprise the protector of Schottky diode, potential comparator module and diode, so that many groups solar module is detected protection.

Said chip all adopts diode and triode to realize Compare Logic, and chip manufacturing process is simple, and is cheap for manufacturing cost.The protector of chip form can reduce the complexity of field connection; connection on the more pcb board is integrated in the chip; only keep pin and the extraneous tie point of chip, farthest reduced the possibility of sealing-off under the adverse circumstances, thereby improve the reliability of the field.

Next provide by reference to the accompanying drawings the embodiment of technique scheme.

According to the electricity generating principle of solar panel, under normal sunshine environment, when the illumination of part component sheets is blocked, can produce reverse voltage.For supply power voltage and the sense of current that guarantees battery pack, the cell piece group increases the Schottky diode D1 (D2) that pincers are pressed protection usefulness, and pincers press magnitude of voltage at 0.1V～1.0V.This circuit comprises two groups of protection detection lines, and its design is in order to detect the performance quality of solar panel diode D1 (D2) in producing, install, using.Two groups of protection detection lines are connected on the solar panel junction box circuit, enter operating state.

Embodiment one, and Fig. 5 is a kind of circuit diagram of the present embodiment.

Transistor BG7, BG3 adopt the PNP pipe in the protection detection line, and the Veb saturation voltage of PNP pipe is-0.6V, and the pipe Vec pressure drop after saturated is-0.3V.Diode D11, D12, D13, D14 and the resistance R 13 of series connection; and diode D25, D26, D27, D28 and resistance R 14; be used for pressure stabilization function, and when solar module increases, be used in the protection detection line and Schottky diode both end voltage transistor modular relatively as expanding.W1 is voltage-stabiliser tube, and resistance R 1, R5, R9 are current-limiting resistance.

When cell piece group B1 voltage constant the voltage of normal power generation (〉=10V) time, the base stage of transistor BG7 by diode D21+D22 the voltage sum and the voltage ratio of Schottky diode D1, obtain less than-0.6V negative pressure bias current and conducting, keep transistorized pressure drop 0.3V, so that the voltage of the base stage of BG3 is low, thereby keep transistor BG3 and LED 3 all to be in cut-off state.

When cell piece group B1 voltage drop, the base voltage of BG7 also rises thereupon, when the comparative voltage of D21+D22 and D1 more than or equal to-0.6V, BG7 begins the trend cut-off, BG3 just begins to tend to saturated.Along with cell piece group B1 voltage continue to descend, the BG7 cut-off, the BG3 base stage obtains voltage less than or equal to-0.6V, BG3 saturation conduction.After the BG3 conducting, its collector voltage descends, and LED 3 obtains positive bias, thereby shinny, sends cell piece group B1 to the user and stops generating, the bright alarm signal of diode D1 normal operation.

Embodiment two, and Fig. 6 is a kind of circuit diagram of the present embodiment.

Transistor BG1, BG3, BG5, BG7 adopt the PNP pipe in this group protection detection line, and the Veb saturation voltage of PNP pipe is-0.6V, and the pipe Vec pressure drop after saturated is-0.3V.Diode D11, D12, D13, D14 and the resistance R 13 of series connection; and diode D25, D26, D27, D28 and resistance R 14; be used for pressure stabilization function, and when solar module increases, be used in the protection detection line and Schottky diode both end voltage transistor modular relatively as expanding.W1 is voltage-stabiliser tube, and resistance R 1, R3, R5, R7, R9 are current-limiting resistance, and wherein R3, R5 are respectively the current-limiting resistances of LED1, LED3.

Obtain positive bias at LED 3, thereby shinny, send cell piece group B1 to the user and stop generating, after the bright alarm signal of diode D1 normal operation, if cell piece group B1 voltage continues to descend rapidly, when the comparative voltage of diode D21+D22+D23+D24 and D1 more than or equal to-0.6V, BG5 begins the trend cut-off, BG1 just begins to tend to saturated.Along with cell piece group B1 voltage continue to descend, the BG5 cut-off, the BG1 base stage obtains voltage less than or equal to-0.6V, BG1 saturation conduction.After the BG1 conducting, its collector voltage descends, and LED 1 obtains positive bias, thereby shinny, sends cell piece group B1 to the user and stops generating, the bright alarm signal of diode D1 non-normal working (opening circuit).

Embodiment three, and Fig. 7 is a kind of circuit diagram of the present embodiment.

Transistor BG1, BG3, BG5, BG7 adopt the PNP pipe in first group of protection detection line, and second group of protection detection line transistor BG2, BG4, BG6, BG8 adopt the NPN pipe.The Veb saturation voltage of PNP pipe is-0.6V, and the pipe Vec pressure drop after saturated is-0.3V; The Veb saturation voltage of NPN pipe is 0.6V, and the pipe Vec pressure drop after saturated is 0.3V.Diode D11, D12, D13, D14 and the resistance R 13 of series connection; and diode D25, D26, D27, D28 and resistance R 14; be used for pressure stabilization function, and when solar module increases, be used in the protection detection line and Schottky diode both end voltage transistor modular relatively as expanding.W1, W2 are voltage-stabiliser tube, and resistance R 1-R10 is current-limiting resistance, and wherein R3, R5, R4, R6 are respectively the current-limiting resistances of LED1, LED3, LED2, LED4.

When cell piece group B1 voltage constant the voltage of normal power generation (〉=10V) time, the base stage of transistor BG7 by diode D21+D22 the voltage sum and the voltage ratio of D1, obtain less than-0.6V negative pressure bias current and conducting, keep transistorized pressure drop 0.3V, so that the voltage of the base stage of BG3 is low, thereby keep transistor BG3 and LED 3 all to be in cut-off state.

If cell piece group B1 voltage continues to descend rapidly, when the comparative voltage of diode D21+D22+D23+D24 and D1 more than or equal to-0.6V, BG5 begins trend to be ended, BG1 just begins to tend to saturated.Along with cell piece group B1 voltage continue to descend, the BG5 cut-off, the BG1 base stage obtains voltage less than or equal to-0.6V, BG1 saturation conduction.After the BG1 conducting, its collector voltage descends, and LED 1 obtains positive bias, thereby shinny, sends cell piece group B1 to the user and stops generating, the bright alarm signal of diode D1 non-normal working (opening circuit).

Same principle, when the voltage (〉=10V) of cell piece group B2 voltage constant in normal power generation, the voltage ratio of the base stage of transistor BG8 by D17+D18 and D2, obtain the conducting greater than 0.6 malleation bias current, keep transistorized pressure drop 0.3V, so that the voltage of the base stage of BG4 is low, thereby keep transistor BG4 and LED 4 all to be in cut-off state.

When cell piece group B2 voltage drop, the base voltage of BG8 also descends thereupon, when the comparative voltage of D17+D18 and D2 less than or equal to 0.6V, BG8 begins trend to be ended, BG4 just begins to tend to saturated.Along with cell piece group B2 voltage continues to descend, the BG8 cut-off, the BG4 base stage obtains voltage more than or equal to 0.6V, the BG4 saturation conduction.After the BG4 conducting, its collector voltage descends, and LED 4 obtains positive bias, thereby shinny, sends cell piece group B2 to the user and stops generating, the bright alarm signal of diode D2 normal operation.

If cell piece group B2 voltage continues to descend rapidly, when the comparative voltage of D15+D16+D17+D18 and D2 less than or equal to 0.6V, BG6 begins trend to be ended, BG2 just begins to tend to saturated.Along with cell piece group B2 voltage continues to descend, the BG6 cut-off, the BG2 base stage obtains voltage more than or equal to 0.6V, the BG2 saturation conduction.After the BG2 conducting, its collector voltage descends, and LED 2 obtains positive bias, thereby shinny, sends cell piece group B2 to the user and stops generating, the bright alarm signal of diode D2 non-normal working (opening circuit).

This circuit design mainly is by the triode in the empty frame change in voltage of solar cell to be judged, to reach to the demonstration of solar cell hot spot effect with to the judgement of clamping diode performance.We can also take potential comparator that the change in voltage of solar cell is judged equally, reach equally to the demonstration of solar cell hot spot effect with to the judgement of clamping diode performance.

Embodiment four, and Fig. 8 is a kind of circuit diagram of the present embodiment.

Be with embodiment illustrated in fig. 73 difference; in the circuit of cell piece group B1 being protected detection, further comprise a positive-negative-positive triode BG9; the emitter electricity of BG9 is connected to the positive pole of cell piece group B1; the base stage electricity of BG9 is connected to the base stage of BG1, and the collector electrode electricity of BG9 is connected to the collector electrode of BG7.Continue to descend along with cell piece group B1 voltage, the BG5 cut-off, the BG1 base stage obtains voltage less than or equal to-0.6V, BG1 saturation conduction, simultaneously BG9 saturation conduction.After the BG1 conducting, its collector voltage descends, and LED 1 obtains positive bias, thereby shinny, sends cell piece group B1 to the user and stops generating, the bright alarm signal of diode D1 non-normal working (opening circuit); The BG9 conducting is so that BG3 ends, and LED 3 extinguishes.Namely when LED 1 work of the second alarm module, the LED 3 of the first alarm module just is in non operating state.

In the circuit of cell piece group B2 being protected detection, further comprise a NPN type triode BG10; the emitter electricity of BG10 is connected to the negative pole of cell piece group B2; the base stage electricity of BG10 is connected to the base stage of BG2, and the collector electrode electricity of BG10 is connected to the collector electrode of BG8.Continuing to descend along with cell piece group B2 voltage, the BG6 cut-off, the BG2 base stage obtains voltage more than or equal to 0.6V, BG2 saturation conduction, simultaneously BG9 saturation conduction.After the BG2 conducting, its collector voltage descends, and LED 2 obtains positive bias, thereby shinny, sends cell piece group B2 to the user and stops generating, the bright alarm signal of diode D2 non-normal working (opening circuit); The BG10 conducting is so that BG4 ends, and LED 4 extinguishes.Namely when LED 2 work of the 4th alarm module, the LED 4 of the 3rd alarm module just is in non operating state.

Wherein LED 1 and LED3, and LED2 and LED4 can also adopt not homochromy light-emitting diode, by sending different color tables the different state of solar cell is shown, and synchronization only may have an alarm module to give the alarm, and the operating personnel that more are conducive to detect judge the state that solar cell is different.

Embodiment five, and Fig. 9 is a kind of circuit diagram of the present embodiment.

The present embodiment takes potential comparator M1 to replace positive-negative-positive triode BG7 and the BG3 in the empty frame among Fig. 7, and pin 2 is connected to diode D21 and the D22 that connects in the circuit shown in Figure 7, comes the change in voltage of solar battery group B1 is judged (positive-negative-positive triode BG5 and BG1 can take to substitute with the potential comparator of M1 same model); Take potential comparator M2 to replace NPN type triode BG8 and the BG4 in the empty frame among Fig. 7, and pin 3 is connected to diode D17 and the D18 that connects in the circuit shown in Figure 7, come the change in voltage of solar battery group B2 is judged, reach equally to the demonstration of solar cell hot spot effect with to the judgement of clamping diode performance.

The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. protecting solar cell device, comprise one first Schottky diode, the negative pole of described the first Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, be used for described the first solar module is clamped the pressure protection, it is characterized in that, described protecting solar cell device further comprises one first potential comparator module, one first diode and one first alarm module; The first input end electricity of described the first potential comparator module is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the first diode, the anodal further electricity of described the first diode is connected to the negative pole of described the first solar module, described the first potential comparator module can more described the first diode two ends and the voltage at the first Schottky diode two ends thus, and produce control signal and the output output by the first potential comparator module according to comparative result; The output electricity of described the first potential comparator module is connected to described the first alarm module; Described the first alarm module electricity is connected to the negative pole of one second solar module adjacent with described the first solar module.

2. protecting solar cell device according to claim 1 is characterized in that, described the first potential comparator module further comprises the first triode of a positive-negative-positive and the second triode of a positive-negative-positive; The emitter electricity of described the first and second triodes is connected to the positive pole of described the first solar module; The base stage electricity of described the first triode is connected to the negative pole of described the first diode, and the collector electrode electricity of described the first triode is connected to the negative pole of described the second solar module; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage of described the first diode and the voltage of the first Schottky diode above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to described the first alarm module, and described the first alarm module is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.

3. protecting solar cell device according to claim 1 is characterized in that, further comprises one second potential comparator module, one second diode and one second alarm module; The first input end electricity of described the second potential comparator module is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the second diode, described the second diode is connected with the first diode and electricity is connected to the negative pole of described the first solar module, described the second potential comparator module can more described the first diode and the voltage at the second diode two ends and the first Schottky diode two ends thus, and produces control signal and export by the output of described the second potential comparator module according to comparative result; The output electricity of described the second potential comparator module is connected to described the second alarm module; Described the second alarm module electricity is connected to the negative pole of described the second solar module.

4. protecting solar cell device according to claim 3 is characterized in that, described the second potential comparator module further comprises the 3rd triode of a positive-negative-positive and the 4th triode of a positive-negative-positive; The emitter electricity of described the third and fourth triode is connected to the positive pole of described the first solar module; The base stage electricity of described the 3rd triode is connected to the negative pole of described the second diode, and the collector electrode electricity of described the 3rd triode is connected to the negative pole of described the second solar module; The collector electrode of described the 3rd triode also electricity is connected to the base stage of described the 4th triode, when being used for comparative result at the voltage sum at described the first diode and the second diode two ends and the voltage at the first Schottky diode two ends above a predefined threshold values, make described the 3rd triode cut-off, and make described the 4th triode conducting; The collector electrode electricity of described the 4th triode is connected to described the second alarm module, and described the second alarm module is used for sending the alarm signal of described the first Schottky diode non-normal working when described the 4th triode conducting.

5. protecting solar cell device according to claim 3 is characterized in that, further comprises a warning handover module; The first input end electricity of described warning handover module is connected to the positive pole of described the first solar module, the second input electricity is connected to described the second alarm module, the output electricity of described warning handover module is connected to described the first alarm module, be used for when detecting described the second alarm module work, close described the first alarm module by the output output control signal of described warning handover module.

6. protecting solar cell device according to claim 1 is characterized in that, further comprises one second Schottky diode, one the 3rd potential comparator module, one the 3rd diode and one the 3rd alarm module; The negative pole of described the second Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, are used for described the second solar module is clamped the pressure protection; The first input end electricity of described the 3rd potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 3rd diode, the further electricity of the negative pole of described the 3rd diode is connected to the positive pole of described the second solar module, described the 3rd potential comparator module can more described the 3rd diode two ends and the voltage at the second Schottky diode two ends thus, and produce control signal and export by the output of described the 3rd potential comparator module according to comparative result; The output electricity of described the 3rd potential comparator module is connected to described the 3rd alarm module; Described the 3rd alarm module electricity is connected to the positive pole of described the first solar module.

7. protecting solar cell device according to claim 6 is characterized in that, described the 3rd potential comparator module further comprises the 5th triode of a NPN type and the 6th triode of a NPN type; The emitter electricity of the described the 5th and the 6th triode is connected to the negative pole of described the second solar module; The base stage electricity of described the 5th triode is connected to the positive pole of the 3rd diode, and the collector electrode electricity of described the 5th triode is connected to the positive pole of described the first solar module; The collector electrode of described the 5th triode also electricity is connected to the base stage of the 6th triode, when being used for comparative result at the voltage at described the 3rd diode two ends and the voltage at the second Schottky diode two ends above a predefined threshold values, make described the 5th triode cut-off, and make described the 6th triode conducting; The collector electrode electricity of described the 6th triode is connected to described the 3rd alarm module, and described the 3rd alarm module is used for sending the alarm signal of described the second Schottky diode normal operation when described the 6th triode conducting.

8. protecting solar cell device according to claim 6 is characterized in that, further comprises one the 4th potential comparator module, one the 4th diode and one the 4th alarm module; The first input end electricity of described the 4th potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 4th diode, described the 4th diode is connected with the 3rd diode and electricity is connected to the positive pole of described the second solar module, described the 4th potential comparator module can more described the 3rd diode and the voltage at the 4th diode two ends and the second Schottky diode two ends thus, and produces control signal and export by the output of described the 4th potential comparator module according to comparative result; The output electricity of described the 4th potential comparator module is connected to described the 4th alarm module; Described the 4th alarm module electricity is connected to the positive pole of described the first solar module.

9. protecting solar cell device according to claim 8 is characterized in that, described the 4th potential comparator module further comprises the 7th triode of a NPN type and the 8th triode of a NPN type; The emitter electricity of the described the 7th and the 8th triode is connected to the negative pole of described the second solar module; The base stage electricity of described the 7th triode is connected to the positive pole of described the 4th diode, and the collector electrode electricity of described the 7th triode is connected to the positive pole of described the first solar module; The collector electrode of described the 7th triode also electricity is connected to the base stage of described the 8th triode, when being used for comparative result at the voltage sum at described the 3rd diode and the 4th diode two ends and the voltage at the second Schottky diode two ends above a predefined threshold values, make described the 7th triode cut-off, and make described the 8th triode conducting; The collector electrode electricity of described the 8th triode is connected to described the 4th alarm module; Described the 4th alarm module is used for sending the alarm signal of described the second Schottky diode non-normal working when described the 8th triode conducting.

10. solar battery group, comprise a plurality of solar modules and a solar module terminal box, it is characterized in that, described solar battery group comprises the described protecting solar cell device of a claim 1 at least, described protecting solar cell device is connected on the circuit of described solar module terminal box, the negative pole of described first Schottky diode of described protecting solar cell device and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module of described a plurality of solar modules, be used for described the first solar module is clamped the pressure protection, the first input end electricity of the described first potential comparator module of described protecting solar cell device is connected to the positive pole of described the first solar module, the second input electricity is connected to the negative pole of described the first diode, the anodal further electricity of described the first diode is connected to the negative pole of described the first solar module, described the first potential comparator module can more described the first diode two ends and the voltage at the first Schottky diode two ends thus, and produce control signal and the output output by the first potential comparator module according to comparative result; The output electricity of described the first potential comparator module is connected to described first alarm module of described protecting solar cell device; Described the first alarm module electricity is connected to the negative pole of one second solar module adjacent with described the first solar module of described a plurality of solar modules.

11. solar battery group according to claim 10 is characterized in that, described protecting solar cell device further comprises one second potential comparator module, one second diode and one second alarm module; The first input end electricity of described the second potential comparator module is connected to the positive pole of the first solar module, the second input electricity is connected to the negative pole of described the second diode, described the second diode is connected with the first diode and electricity is connected to the negative pole of described the first solar module, described the second potential comparator module can more described the first diode and the voltage at the second diode two ends and the first Schottky diode two ends thus, and produces control signal and export by the output of described the second potential comparator module according to comparative result; The output electricity of described the second potential comparator module is connected to the second alarm module; Described the second alarm module electricity is connected to the negative pole of described the second solar module.

12. solar battery group according to claim 10 is characterized in that, described protecting solar cell device further comprises one second Schottky diode, one the 3rd potential comparator module, one the 3rd diode and one the 3rd alarm module; The negative pole of described the second Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of described the second solar module, are used for described the second solar module is clamped the pressure protection; The first input end electricity of described the 3rd potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 3rd diode, the further electricity of the negative pole of described the 3rd diode is connected to the positive pole of described the second solar module, described the 3rd potential comparator module can more described the 3rd diode two ends and the voltage at the second Schottky diode two ends thus, and produce control signal and export by the output of described the 3rd potential comparator module according to comparative result; The output electricity of described the 3rd potential comparator module is connected to the 3rd alarm module; Described the 3rd alarm module electricity is connected to the positive pole of described the first solar module.

13. solar battery group according to claim 10 is characterized in that, described protecting solar cell device further comprises one the 4th potential comparator module, one the 4th diode and one the 4th alarm module; The first input end electricity of described the 4th potential comparator module is connected to the negative pole of described the second solar module, the second input electricity is connected to the positive pole of described the 4th diode, described the 4th diode is connected with the 3rd diode and electricity is connected to the positive pole of described the second solar module, described the 4th potential comparator module can more described the 3rd diode and the voltage at the 4th diode two ends and the second Schottky diode two ends thus, and produces control signal and export by the output of described the 4th potential comparator module according to comparative result; The output electricity of described the 4th potential comparator module is connected to the 4th alarm module; Described the 4th alarm module electricity is connected to the positive pole of described the first solar module.

14. protecting solar cell chip, comprise one first Schottky diode, the negative pole of described the first Schottky diode and anodal respectively electricity are connected to positive pole and the negative pole of one first solar module, be used for described the first solar module is clamped the pressure protection, it is characterized in that, described protecting solar cell chip further comprises one first potential comparator module and one first diode, and described the first potential comparator module further comprises the first triode of a PNP/NPN type and the second triode of a PNP/NPN type; The emitter electricity of described the first and second triodes be connected to described the first solar module just/negative pole; The base stage electricity of described the first triode is connected to bearing/positive pole of described the first diode, and the collector electrode electricity of described the first triode is connected to bearing/positive pole of described the second solar module; The collector electrode of described the first triode also electricity is connected to the base stage of described the second triode, when being used for comparative result at the voltage at described the first diode two ends and the voltage at the first Schottky diode two ends above a predefined threshold values, make described the first triode cut-off, and make described the second triode conducting; The collector electrode electricity of described the second triode is connected to one first outside alarm module, and described the first alarm module is used for sending the alarm signal of described the first Schottky diode normal operation when described the second triode conducting.