CN105305586A - Photovoltaic control protector - Google Patents
Photovoltaic control protector Download PDFInfo
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- CN105305586A CN105305586A CN201510639630.8A CN201510639630A CN105305586A CN 105305586 A CN105305586 A CN 105305586A CN 201510639630 A CN201510639630 A CN 201510639630A CN 105305586 A CN105305586 A CN 105305586A
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- battery core
- core group
- module
- photovoltaic control
- photovoltaic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention discloses a photovoltaic control protector. The photovoltaic control protector comprises a photovoltaic control module and an electrical core set protection module electrically connected with the photovoltaic control module, wherein the electrical core set protection module comprises a detection module, a determination module and a switching circuit, the photovoltaic control module is electrically connected with a photovoltaic assembly, the photovoltaic control module is used for adjusting electrical energy generated in the photovoltaic assembly, the detection module is used for detecting charging and discharging state data of each electrical core set, the determination module is used for determining whether the charging and discharging state data of each electrical core set satisfies one abnormal condition, a switching signal is sent to the switching circuit when the charging and discharging state data of one electrical core set satisfies the abnormal condition, and the switching circuit is used for disconnecting the electrical core set after the switching signal is received. According to the photovoltaic control protector, other electrical core sets are not influenced as the abnormal electrical core set is disconnected, so excellent protection for the electrical core sets and electrical equipment is realized.
Description
Technical field
The present invention relates to a kind of from net type photovoltaic energy storage system regions, particularly a kind of photovoltaic Control protection device.
Background technology
Photovoltaic controller is used in solar power system, for controlling multichannel solar cell array to charge in batteries and storage battery to the automatic control equipment of solar inverter load supplying.Photovoltaic controller of the prior art is when carrying out charge and discharge control to storage battery, mode is connected in series due to battery core group, make when a certain battery core group lost efficacy, then whole battery core group all can be affected and whole battery core group be lost efficacy, whole battery core group all need be split out to change the battery core group lost efficacy when safeguarding, battery core group is caused to be difficult to safeguard, even if when the battery core group of inefficacy being done short circuit isolation, the external supply power voltage of whole battery core group also can decline, still can affect the power supply capacity of battery core group to external loading, also can produce larger transient current at short circuit moment place, and then damage may be caused to each electric component be attached thereto.Visible, photovoltaic controller of the prior art fails to carry out control and protection well to battery core group, there is certain potential safety hazard during system cloud gray model, and thrashing probability is comparatively large, and later maintenance cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is the defect failing to control well battery core group and safeguard to overcome photovoltaic controller of the prior art, making battery core group easily affect whole current supply circuit when losing efficacy, providing a kind of photovoltaic Control protection device.
The present invention is solved the problems of the technologies described above by following technical proposals:
A kind of photovoltaic Control protection device, its feature is, the battery core group protection module comprising photovoltaic control module and be electrically connected with described photovoltaic control module, described battery core group protection module comprises a detection module, a judge module and a switching circuit, and described photovoltaic control module is electrically connected with a photovoltaic module;
The electric energy of described photovoltaic control module for regulating photovoltaic module to produce, and the electric energy after regulating is transferred to some battery core groups by described battery core group protection module, each battery core group comprises at least one battery core;
Described detection module is for detecting the charging and discharging state data of each battery core group;
Described judge module for judging whether the charging and discharging state data of each battery core group meet an exceptional condition, and described in the charging and discharging state data fit of a battery core group wherein during exceptional condition, sends a switching signal to described switching circuit;
Described switching circuit is used for after receiving described switching signal, disconnect described battery core group.
In this programme, exceptional condition refers to the condition that battery core group lost efficacy, and by detecting the charging and discharging state data of each battery core group, to find the Problem of Failure that each battery core group may exist in time, and the battery core group of abnormal charging or paradoxical discharge is done isolated controlling.And disconnect described battery core group and refer to disconnect and meet the battery core group of described exceptional condition, "off" operation wherein refers to be isolated battery core group, to make it not participate in follow-up charge and discharge cycles, and also can not affect the normal work of remaining battery core group.Owing to having isolated the battery core group lost efficacy, remaining battery core group can not be affected.And this programme was only when all battery core groups all lost efficacy, and whole battery core group just can lose efficacy, as long as there is a battery core group to be in normal work, can carry out normal power supply to external loading, and power supply capacity can not be affected, maintenance cost reduced greatly.Further, the battery core group of this programme access is more, and the probability that whole battery core group lost efficacy is less.Visible, this programme can carry out good control and maintenance to battery core group.
Preferably, described battery core group protection module also comprises a DC/DC modular converter, and described DC/DC modular converter is electrically connected with described photovoltaic control module.
Due to the existence of DC/DC modular converter, the external supply power voltage of segregate inefficacy battery core group can not be affected, and when charging to battery core group, can charge efficiency be improved.
Preferably, those battery core groups connection in series or in parallel with each other.
For the battery core group be connected in series, when after battery core group inefficacy being detected, the battery core group lost efficacy is disconnected, and make remaining battery core group continue to connect in a series arrangement, the impact of the battery core group that remaining battery core group can not be lost efficacy.And for the battery core group be connected in parallel, when disconnecting the battery core group of the inefficacy be connected in parallel, all the other battery core groups be connected in parallel can't be affected.
Preferably; described battery core group protection module also comprises a handover module; described handover module is used for, when the residual capacity sum of the battery core group of at least two series connection is less than the 5th predetermined threshold value, the battery core group of described at least two series connection being switched to the battery core group be connected in parallel.
When the residual capacity of single battery core group is also not enough to meet exceptional condition, but when its residual capacity is also relatively low, then the battery core group of the series connection of multiple similar this state can be used as a battery core group to use, the battery core group being about to series connection is connected in parallel, and is connected in series with the battery core group of connecting with residue.The utilance to battery core group can also be improved under the prerequisite of operating state that can detect battery core group.
Preferably, when to described battery core group charging, the electric energy that described DC/DC modular converter is used for photovoltaic module produces carries out step-down, and when battery core group is powered to external loading, the electric energy that described DC/DC modular converter is used for being supplied to battery core group external loading boosts.
When the battery core group of isolated failure, remaining battery core group, when powering to external loading, can be realized the rising of voltage, thus can not affect the power supply to external loading by DC/DC modular converter.
Preferably, when described charging and discharging state data are the voltage at each battery core group two ends, described judge module is for judging whether the voltage at each battery core group two ends is less than one first predetermined threshold value, and when the voltage at battery core group two ends is less than described first predetermined threshold value, send one first switching signal to described switching circuit wherein;
Described switching circuit is used for disconnecting described battery core group after receiving described first switching signal, disconnects described battery core group and refers to that the voltage disconnecting two ends is less than the battery core group of described first predetermined threshold value.
Also namely, when charging, for the battery core group lost efficacy, the voltage at two ends may be lower, outside electricity cannot normally be delivered in battery core group, visible, and this programme can carry out the battery core group of quick isolated failure by the judgement of the voltage at battery core group two ends.
Preferably, when described charging and discharging state data are the residual capacity of each battery core group, described judge module is for judging whether the residual capacity of each battery core group is less than one second predetermined threshold value, and when the residual capacity of a battery core group is less than described second predetermined threshold value, send a second switch signal to described switching circuit wherein;
Described switching circuit is used for disconnecting described battery core group after receiving described second switch signal.Disconnect described battery core group and refer to the battery core group disconnecting residual capacity and be less than described second predetermined threshold value.
When after the charge and discharge cycles that battery core group take part in repeatedly, the internal resistance of battery core group can increase, and make electricity when being full of electricity to battery core group can't reach absolutely, also namely residual capacity can be only a part for initial capacity.Visible, this programme can carry out the battery core group of quick isolated failure by the judgement of the residual capacity of battery core group.
Preferably, described detection module comprises at least one voltameter, and each voltameter correspondence is electrically connected with a battery core group, and each voltameter is for detecting the residual capacity of the corresponding battery core group connected.
Preferably, when described charging and discharging state data comprise the residual capacity of the voltage at each battery core group two ends and each battery core group, described judge module is for judging whether the voltage at each battery core group two ends is less than one the 3rd predetermined threshold value, judge whether the residual capacity of each battery core group is less than one the 4th predetermined threshold value, and the voltage at battery core group two ends is less than described 3rd predetermined threshold value wherein, and the residual capacity of described battery core group is when being less than described 4th predetermined threshold value, send one the 3rd switching signal to described switching circuit;
Described switching circuit is used for disconnecting described battery core group after receiving described 3rd switching signal.Disconnect described battery core group and refer to that the voltage disconnecting two ends is less than described 3rd predetermined threshold value, and residual capacity is less than the battery core group of described 4th predetermined threshold value.
By both judging the size of the voltage at battery core group two ends, judging again the residual capacity of battery core group, the battery core group lost efficacy can be judged further more accurately, avoid the issuable erroneous judgement when single factor judges.
Preferably, described photovoltaic Control protection device also comprises at least one temperature sensor, and each temperature sensor correspondence is located at the surface of a battery core group, and each temperature sensor is for detecting the temperature of battery core group corresponding with it;
Described judge module also for judging that the temperature of each battery core group is whether in a preset range, and when the temperature of a battery core group is in described preset range, sends one the 4th switching signal to described switching circuit wherein;
Described switching circuit also for disconnecting described battery core group after receiving described 4th switching signal.Disconnect described battery core group and refer to that the temperature disconnecting battery core group is in the battery core group of described preset range.
Wherein, this preset range is also the scope that battery core group can not carry out work, also, when temperature is lower than certain temperature value, or temperature higher than another temperature value time, can not charge to battery core group, otherwise charging damage can be caused to battery core group.By the judgement of the temperature to battery core group surface, can control battery core group better and safeguard, as the battery core group when reconnecting disconnection, can again control as required.
In addition, the temperature of battery core group of the present invention also comprises battery core group variations in temperature at short notice, especially for the situation of instantaneous intensification, also can disconnect battery core group when the variations in temperature of battery core group meets a temperature difference.Instantaneous temperature refers within very short time period (being generally 5 ~ 10 seconds); the situation that battery core group temperature raises suddenly; if there is (situation being generally battery core group generation internal short-circuit or catching fire) when discharge and recharge exception or battery core group exist failure risk; effectively can be protected other adjacent battery core groups and whole system by monitoring battery core group being carried out to instantaneous temperature, avoid the loss that user is larger.
Preferably, described battery core group protection module is all electrically connected by waterproof plug with those battery core groups and external loading.
Preferably, each battery core group comprises some battery cores being connected in series and/or being connected in parallel.
Positive progressive effect of the present invention is: by detecting the charging and discharging state data of each battery core group, in the charging and discharging state data of battery core group when the exceptional condition of satisfied setting, this battery core group is disconnected, thus can not affect the normal work of other battery core groups; Due to the existence of DC/DC modular converter, the supply power voltage that battery core group also can not be made external reduces.Therefore only when all battery core groups all lost efficacy, whole battery core group just can lose efficacy, as long as there is a battery core group to be in normal work, can carry out normal power supply to external loading, and power supply capacity can not be affected, maintenance cost reduces greatly.Further, the battery core group of this programme serial or parallel connection is more, and the probability that whole battery core group lost efficacy is less.Visible, this programme can tackle more harsh and severe real-world environment, and has perfect protection and self-protection function, can carry out good control and protection to battery core group and energy supply.
Accompanying drawing explanation
Fig. 1 is the structural representation of the photovoltaic Control protection device of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the photovoltaic Control protection device of the embodiment of the present invention 2.
Fig. 3 is the structural representation of the photovoltaic Control protection device of the embodiment of the present invention 4.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
Embodiment 1
The present embodiment provides a kind of photovoltaic Control protection device 100a, as shown in Figure 1, the battery core group protection module 2 comprising photovoltaic control module 1 and be electrically connected with described photovoltaic control module, described battery core group protection module comprises DC/DC modular converter 20, detection module 21, judge module 22 and a switching circuit 23, described photovoltaic control module is electrically connected with a photovoltaic module 3, and described DC/DC modular converter 20 is electrically connected with described photovoltaic control module;
The electric energy that described photovoltaic control module 1 produces for regulating photovoltaic module 3; and the electric energy after regulating is transferred to some battery core groups 4 by described battery core group protection module 2; the connection in series or in parallel with each other of those battery core groups; the mode be connected in parallel as shown in Figure 1; each battery core group can comprise some battery cores being connected in series and/or being connected in parallel, and can adopt but be not limited to lithium battery as electric energy storage device in battery core.
And the photovoltaic control module of the present embodiment can be a photovoltaic controller, due to the inhomogeneities of intensity of illumination, the electric energy that photovoltaic module is produced also is unstable, the electric energy that photovoltaic module produces then is stabilized in a fluctuation range by the mode of regulation voltage or electric current by photovoltaic controller, adopt MPPT maximum power point tracking technology, management of charging and discharging is carried out to battery core group, to improve efficiency for charge-discharge, namely, when the load 11 of battery core group supply did not need to run in some period, as street lamp does not need to run by day, photovoltaic controller can control battery core group to be stopped powering to such load 11 within this period.Because illumination exists sometimes always, when may continue charging to the battery core group being full of electricity, battery core group electricity is easily caused to gather and blast of expanding, therefore photovoltaic controller then can stop the delivery of electrical energy to battery core group, or the electric energy oneself of photovoltaic module generation is absorbed or discharged, thus realize the management of charging and discharging to battery core group.
Described DC/DC modular converter 20 is for regulating charging voltage and the output voltage of each battery core group, particularly, when to described battery core group charging, the electric energy that described DC/DC modular converter is used for photovoltaic module produces carries out step-down, when battery core group is powered to external loading, the electric energy that described DC/DC modular converter is used for being supplied to battery core group external loading boosts.And when charging to battery core group, charge efficiency can be improved further.
Described detection module 21 is for detecting the charging and discharging state data of each battery core group; Described detection module comprises at least one voltameter, each voltameter correspondence is electrically connected with a battery core group, each voltameter is for detecting the residual capacity of the corresponding battery core group connected, the quantity of those voltameters can be identical with the quantity of battery core group, also can will detect the function i ntegration of the electricity of multiple battery core group on a voltameter, the present embodiment is not construed as limiting this.
Described judge module 22 for judging whether the charging and discharging state data of each battery core group meet an exceptional condition, and described in the charging and discharging state data fit of a battery core group wherein during exceptional condition, sends a switching signal to described switching circuit;
Wherein, charging and discharging state data can be the voltage at battery core group two ends, also can be the residual capacity of battery core group, and the exceptional condition that the present embodiment refers to is specially: when the voltage at any one battery core group two ends is less than the first predetermined threshold value, or the residual capacity of any one battery core group is when being less than the second predetermined threshold value, all can to switching circuit transmit button signal to disconnect this battery core group, and then the battery core group of this inefficacy be made not participate in follow-up charge and discharge cycles.
In fact, the charging and discharging state data of battery core group are also not limited to above-mentioned voltage and residual capacity, also can be the parameter that other can characterize the charging and discharging state of battery core group, as in the conceived case, measure by the electric current of battery core group, or measure the mode such as internal resistance of the battery core in battery core group.
Described switching circuit 23 for disconnecting described battery core group after receiving described switching signal.And switching circuit can be some metal-oxide-semiconductor (metaloxidesemiconductor controlling the break-make of the path of a battery core group respectively, mos field effect transistor), also can be other the electronic switch parts that can realize switching function.
For the battery core group be connected in series, when after battery core group inefficacy being detected, the battery core group lost efficacy is disconnected, and make remaining battery core group continue to connect in a series arrangement.The mode that can realize has: electronic switch is connected with battery core group, the battery core group of inefficacy is disconnected by the electronic switch of connecting with it and isolating to do, and battery core group adjacent for the front and back be connected in series with the battery core group lost efficacy is connected by other electronic switch.Under these circumstances, then do boost operations to remaining battery core group, when powering to external loading with the battery core group meeting any amount, power supply capacity all can not be affected.
And for the battery core group be connected in parallel, electronic switch also can be connected with battery core group, when after battery core group inefficacy being detected, the battery core group of inefficacy is disconnected by the electronic switch of connecting with it and isolates to do, owing to being connected in parallel between battery core group, therefore the battery core group disconnecting inefficacy is the battery core group that can not affect other parallel connection, only needs the power supply capacity situation according to the battery core group of the parallel connection of remainder, performs boost operations as required to the battery core group of remainder.
Photovoltaic control module and battery core group protection module are also integrated in seal casinghousing by the present embodiment; the wire of external extraction communication and current-carrying and connector; achieve and battery core group and photovoltaic Control protection device are done split-type design; can be convenient to produce, construction and the investigation of late problems and maintenance; waterproof and dampproof problem can also be solved; and described battery core group protection module is all electrically connected by waterproof plug with those battery core groups and external loading, can available protecting system and user security.
This battery core group lost efficacy can disconnect by the present embodiment, thus the normal work of other battery core groups can not be affected, therefore only when all battery core groups all lost efficacy, whole battery core group just can lose efficacy, and just can change battery core group, as long as there is a battery core group to be in normal work, normal power supply can be carried out to external loading, also just without the need to immediately changing, maintenance cost reduces greatly, even can realize non-maintaining in long period section.Further, the battery core group of this programme serial or parallel connection is more, and the probability that whole battery core group lost efficacy is less.Visible, this programme can carry out good control and maintenance to battery core group.
Embodiment 2
The present embodiment provides a kind of photovoltaic Control protection device 100b; as shown in Figure 2; the difference of the present embodiment and embodiment 1 is: described battery core group protection module also comprises a handover module 24; the battery core groups of described at least two series connection, for when the residual capacity sum of battery core group of at least two series connection is less than the 5th predetermined threshold value, are switched to the battery core group be connected in parallel by described handover module 24.
The battery core group of the series connection of multiple similar this state, when reaching the technique effect of embodiment 1, is used as a battery core group and is used by the present embodiment, the battery core group being about to series connection be connected in parallel with remain the battery core group of connecting and be connected in series.The utilance to battery core group can also be improved under the prerequisite of operating state that can detect battery core group.
Embodiment 3
The present embodiment provides a kind of photovoltaic Control protection device, the difference of the present embodiment and embodiment 1 is: when described charging and discharging state data comprise the residual capacity of the voltage at each battery core group two ends and each battery core group, described judge module is for judging whether the voltage at each battery core group two ends is less than one the 3rd predetermined threshold value, judge whether the residual capacity of each battery core group is less than one the 4th predetermined threshold value, and the voltage at battery core group two ends is less than described 3rd predetermined threshold value wherein, and the residual capacity of described battery core group is when being less than described 4th predetermined threshold value, one the 3rd switching signal is sent to described switching circuit,
Described switching circuit is used for disconnecting described battery core group after receiving described 3rd switching signal.
Also be, the present embodiment had both judged the size of the voltage at battery core group two ends, judge again the residual capacity of battery core group, while the technique effect reaching embodiment 1, the battery core group lost efficacy can be judged further more accurately, avoiding the issuable erroneous judgement when using single factor to judge, further increasing the control to battery core group and maintenance.
Embodiment 4
The present embodiment provides a kind of photovoltaic Control protection device 100c; as shown in Figure 3; the difference of the present embodiment and embodiment 2 is: described photovoltaic Control protection device also comprises at least one temperature sensor 5; each temperature sensor 5 correspondence is located at the surface of a battery core group; each temperature sensor is for detecting the temperature of battery core group corresponding with it, and the inside composition of temperature sensor can be thermistor.
The quantity of those temperature sensors can be identical with the quantity of battery core group, also the function i ntegration of the temperature of multiple battery core group will can be detected on a temperature sensor, the present embodiment is not construed as limiting this, the present embodiment focuses on can adopting the job control of temperature sensor realization to battery core group, more efficiently to carry out charge and discharge control to battery core group.
Described judge module is also for judging that the temperature of each battery core group is whether in a preset range, this preset range refers to that battery core group can not carry out the scope of work, and when the temperature of a battery core group is in described preset range, send one the 4th switching signal to described switching circuit wherein; The temperature of the present embodiment also comprises the range of temperature on battery core group surface, therefore judge module is also for judging that whether the variations in temperature (especially instantaneous intensification) on battery core group surface is more than a threshold value, when exceeding described threshold value, also the 4th switching signal still can be sent.Can say, judging that the change of temperature is in fact also and judges that the mode of temperature point value is similar, is all the exceptions produced in temperature for detecting battery core group.
Described switching circuit also for disconnecting described battery core group after receiving described 4th switching signal.
Also namely, the discharge and recharge behavior of battery core group needs, in a rational temperature range or in a rational range of temperature, to have exceeded temperature upper limit, be all not suitable for carrying out discharge and recharge when lowest temperature or range of temperature.
Visible, the present embodiment, while the technique effect reaching embodiment 2, also by the temperature on battery core group surface and the judgement of variations in temperature, controls battery core group better and safeguards.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.
Claims (12)
1. a photovoltaic Control protection device, it is characterized in that, the battery core group protection module comprising photovoltaic control module and be electrically connected with described photovoltaic control module, described battery core group protection module comprises a detection module, a judge module and a switching circuit, and described photovoltaic control module is electrically connected with a photovoltaic module;
The electric energy of described photovoltaic control module for regulating photovoltaic module to produce, and the electric energy after regulating is transferred to some battery core groups by described battery core group protection module, each battery core group comprises at least one battery core;
Described detection module is for detecting the charging and discharging state data of each battery core group;
Described judge module for judging whether the charging and discharging state data of each battery core group meet an exceptional condition, and described in the charging and discharging state data fit of a battery core group wherein during exceptional condition, sends a switching signal to described switching circuit;
Described switching circuit is used for after receiving described switching signal, disconnect described battery core group.
2. photovoltaic Control protection device as claimed in claim 1, it is characterized in that, described battery core group protection module also comprises a DC/DC modular converter, and described DC/DC modular converter is electrically connected with described photovoltaic control module.
3. photovoltaic Control protection device as claimed in claim 2, is characterized in that, the connection in series or in parallel with each other of those battery core groups.
4. photovoltaic Control protection device as claimed in claim 3; it is characterized in that; described battery core group protection module also comprises a handover module; described handover module is used for, when the residual capacity sum of the battery core group of at least two series connection is less than the 5th predetermined threshold value, the battery core group of described at least two series connection being switched to the battery core group be connected in parallel.
5. photovoltaic Control protection device as claimed in claim 2; it is characterized in that; when to described battery core group charging; the electric energy that described DC/DC modular converter is used for photovoltaic module produces carries out step-down; when battery core group is powered to external loading, the electric energy that described DC/DC modular converter is used for being supplied to battery core group external loading boosts.
6. photovoltaic Control protection device as claimed in claim 1, it is characterized in that, when described charging and discharging state data are the voltage at each battery core group two ends, described judge module is for judging whether the voltage at each battery core group two ends is less than one first predetermined threshold value, and when the voltage at battery core group two ends is less than described first predetermined threshold value, send one first switching signal to described switching circuit wherein;
Described switching circuit is used for disconnecting described battery core group after receiving described first switching signal.
7. photovoltaic Control protection device as claimed in claim 1, it is characterized in that, when described charging and discharging state data are the residual capacity of each battery core group, described judge module is for judging whether the residual capacity of each battery core group is less than one second predetermined threshold value, and when the residual capacity of a battery core group is less than described second predetermined threshold value, send a second switch signal to described switching circuit wherein;
Described switching circuit is used for disconnecting described battery core group after receiving described second switch signal.
8. photovoltaic Control protection device as claimed in claim 7, it is characterized in that, described detection module comprises at least one voltameter, and each voltameter correspondence is electrically connected with a battery core group, and each voltameter is for detecting the residual capacity of the corresponding battery core group connected.
9. photovoltaic Control protection device as claimed in claim 1, it is characterized in that, when described charging and discharging state data comprise the residual capacity of the voltage at each battery core group two ends and each battery core group, described judge module is for judging whether the voltage at each battery core group two ends is less than one the 3rd predetermined threshold value, judge whether the residual capacity of each battery core group is less than one the 4th predetermined threshold value, and the voltage at battery core group two ends is less than described 3rd predetermined threshold value wherein, and the residual capacity of described battery core group is when being less than described 4th predetermined threshold value, one the 3rd switching signal is sent to described switching circuit,
Described switching circuit is used for disconnecting described battery core group after receiving described 3rd switching signal.
10. photovoltaic Control protection device as claimed in claim 1, it is characterized in that, described photovoltaic Control protection device also comprises at least one temperature sensor, and each temperature sensor correspondence is located at the surface of a battery core group, and each temperature sensor is for detecting the temperature of battery core group corresponding with it;
Described judge module also for judging that the temperature of each battery core group is whether in a preset range, and when the temperature of a battery core group is in described preset range, sends one the 4th switching signal to described switching circuit wherein;
Described switching circuit also for disconnecting described battery core group after receiving described 4th switching signal.
11., as the photovoltaic Control protection device in claim 1-10 as described in any one, is characterized in that, described battery core group protection module is all electrically connected by waterproof plug with those battery core groups and external loading.
12., as the photovoltaic Control protection device in claim 1-10 as described in any one, is characterized in that, each battery core group comprises some battery cores being connected in series and/or being connected in parallel.
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| CN201510639630.8A CN105305586A (en) | 2015-09-30 | 2015-09-30 | Photovoltaic control protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108696236A (en) * | 2018-04-27 | 2018-10-23 | 深圳硕日新能源科技有限公司 | A kind of solar controller of integrated lithium battery protection board |
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| CN101854069A (en) * | 2009-03-16 | 2010-10-06 | 通用汽车环球科技运作公司 | The charging method of solar cell and the device that is used for lithium-ion battery systems |
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| CN102035235A (en) * | 2010-12-17 | 2011-04-27 | 慈松 | Device and method for automatically adjusting charging and discharging of battery pack |
| US20120286722A1 (en) * | 2011-05-12 | 2012-11-15 | Fdk Twicell Co., Ltd. | Charger |
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| CN108696236A (en) * | 2018-04-27 | 2018-10-23 | 深圳硕日新能源科技有限公司 | A kind of solar controller of integrated lithium battery protection board |
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Application publication date: 20160203 |