CN202014088U - Overdischarge protector of solar power system storage battery - Google Patents
Overdischarge protector of solar power system storage battery Download PDFInfo
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- CN202014088U CN202014088U CN2011200993834U CN201120099383U CN202014088U CN 202014088 U CN202014088 U CN 202014088U CN 2011200993834 U CN2011200993834 U CN 2011200993834U CN 201120099383 U CN201120099383 U CN 201120099383U CN 202014088 U CN202014088 U CN 202014088U
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- voltage comparator
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- 230000001012 protector Effects 0.000 title claims abstract description 23
- 230000005669 field effect Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model discloses an overdischarging protector of a storage battery of a solar power system, which is characterized by comprising a voltage comparator A1, a voltage comparator A2 and a switch controller, the input end P+ of the voltage comparator A1 is connected with the anode of a solar power pole plate, the anode of the storage battery and the anode of a solar power controller pole plate, the input end TG of the voltage comparator A1 is connected with the cathode of the solar power pole plate, and the input end BG of the voltage comparator A1 is connected with the cathode of the storage battery. The output end CG of the voltage comparator A1 is connected with the input end CG of the switch controller. The input end P+ of voltage comparator A2 is connected with the anode of the solar power pole plate, the anode of the battery and the anode of the solar power controller pole plate, the input end CG of the voltage comparator A2 is connected with the output end CG of the voltage comparator A1, and the output end K is connected with the input end K of the switch controller. The overdischarge protector resolves the problem of damage to the battery of a solar power photovoltaic generating system caused by overdischarge in continuous rainy days.
Description
Technical field
The utility model relates to a kind of solar energy system battery overdischarge protector, belongs to the solar photovoltaic generation system technical field, especially small-sized individual solar photovoltaic generating system technical field.
Background technology
Solar photovoltaic generation system mainly is by the solar energy pole plate at present; controller for solar; storage battery is formed; wherein storage battery is controlled its charging and discharge by controller for solar; controller for solar generally also has the storage battery under-voltage protection function; when battery tension is lower than set point; controller for solar cuts off being connected between storage battery and load equipment; protect the overdischarge of storage battery; but not being connected between controller for solar and storage battery disconnects; and also there is power consumption to a certain degree in controller for solar self; under continuous rainy weather; storage battery can cause its over-discharge can because of the power consumption of controller for solar; to make the damage storage battery, its shortening of life-span.
Summary of the invention
At the problems referred to above that exist in the present technology; the utility model provides a kind of solar energy system battery overdischarge protector, has solved storage battery in the solar photovoltaic generation system may cause its damage because of over-discharge can in overcast and rainy continuously technical problem.
A kind of solar energy system battery overdischarge protector, it is characterized in that, comprise voltage comparator A1, voltage comparator A2 and on-off controller, the input P+ of voltage comparator A1 is connected with solar energy pole plate positive pole, battery positive voltage, controller for solar pole plate input anode, storage battery input anode, load output head anode, input TG is connected with solar energy pole plate negative pole, and input BG is connected with battery terminal negative; The output CG of voltage comparator A1 is connected with on-off controller input CG, and when voltage comparator A1 output CG was high level, described protector was in off position; When voltage comparator A1 output CG is low level, triode Q9 conducting, the current potential of output CG equates with input BG current potential, field effect transistor Q5, the Q6 conducting in the on-off controller simultaneously; Voltage comparator A2 input P+ is connected with solar energy pole plate positive pole, battery positive voltage, controller for solar pole plate positive pole, and input CG is connected with voltage comparator A1 output CG; Output K is connected with the input K of on-off controller, when voltage comparator A2 output K is low level, and the field effect transistor Q5 in the on-off controller, Q6 conducting; When voltage comparator A2 output K is high level, the field effect transistor Q1 in the on-off controller, Q2, Q3, Q4 conducting.
Solar energy system storage battery protecting device of the present utility model, in solar energy system, connect with solar energy pole plate, controller for solar and storage battery, adopt voltage comparator A1, A2 that battery tension, polar plate voltage are compared, when battery tension is lower than set point B1, cut off the power supply between storage battery and controller for solar, the solar energy pole plate charges a battery by the solar energy system battery overdischarge protector that the utility model provides; When battery tension is lower than set point B2, cuts off the power supply of the solar photovoltaic generation system storage battery protecting device that storage battery and the utility model provide, and then storage battery is no longer discharged, thereby protect storage battery can not damage because of over-discharge can.
Concrete principle is as follows: when the potential difference between BG and the P+ (battery tension) is lower than set point B2, solar energy system battery overdischarge protector is by the output CQ output high level of voltage comparator A1, cut off being connected of storage battery and solar energy pole plate, controller for solar and protector self, guarantee that storage battery does not have external power consumption; When the potential difference between TG and the P+ (solar energy polar plate voltage) when being higher than set point B2; solar energy system battery overdischarge protector is by the output CQ output low level of voltage comparator A1; make storage battery and solar energy pole plate direct-connected; the solar energy pole plate directly charges a battery; charge to battery tension when being higher than set point B3, solar energy system battery overdischarge protector is formed solar energy pole plate, controller for solar, storage battery and protector thereof the solar photovoltaic generation system of operate as normal effectively.
When the potential difference between BG and the P+ (battery tension) is lower than set point B1; solar energy system battery overdischarge protector is by voltage comparator A2 output K low level; the cut-out storage battery is connected with controller for solar; make storage battery and solar energy pole plate direct-connected; the solar energy pole plate will directly charge a battery; charge to battery tension when being higher than set point B3, solar energy system battery overdischarge protector is formed solar energy pole plate, controller for solar, storage battery and protector thereof the solar photovoltaic generation system of operate as normal effectively.
The utlity model has following advantage:
1, protects storage battery effectively, improve its utilization ratio.The solar energy system battery overdischarge protector that the utility model provides has guaranteed battery tension subcritical value, cuts off storage battery and external equipment, has protected the storage battery can over-discharge can.
2, prolonged the life of storage battery effectively.The accumulator cell charging and discharging number of times is limited, and the solar energy system battery overdischarge protector that the utility model provides has guaranteed that storage battery is when cutting off with external equipment; charge to certain value; just can connect external equipment, reduce the little electric current of storage battery and discharge and recharge number of times, prolong the life of storage battery.
3, low in energy consumption.Under storage battery and controller for solar cut-out situation, power consumption is not higher than 5 microamperes; Directly fill under the situation at the solar energy system battery overdischarge protector accumulators that solar energy provides by the utility model, the power supply of solar energy pole plate is directly arranged.
Description of drawings
Fig. 1 is the circuit diagram of the utility model voltage comparator A1.
Fig. 2 is the circuit diagram of the utility model voltage comparator A2.
Fig. 3 is the circuit diagram of the utility model on-off controller.
Below in conjunction with accompanying drawing the utility model is described in detail.
Embodiment
Embodiment 1
The solar energy system battery overdischarge protector that present embodiment provides; its circuit is to be used for the solar photovoltaic generation system that solar energy pole plate, controller for solar, storage battery with solar photovoltaic generation system are composed in series effectively shown in accompanying drawing 1-3.Solar energy pole plate positive pole, controller for solar positive pole, battery positive voltage and voltage comparator A1, A2, the input P+ of on-off controller connects; Solar energy pole plate negative pole is connected with voltage comparator A1, on-off controller input TG; Controller for solar pole plate input cathode is connected with on-off controller output KTG; Battery terminal negative is connected with the input BG of voltage comparator A1, on-off controller; Controller for solar storage battery input cathode is connected with on-off controller output KBG.When the potential difference between BG and the P+ (battery tension) is lower than set point B2(21.5V) time, output CQ output high level by voltage comparator A1, not conducting of the field effect transistor Q1 of on-off controller, Q2, Q3, Q4, Q5, Q6, the expression battery terminal negative is connected with pole plate input cathode, the storage battery input cathode of controller for solar, on-off controller output KTG, KBG, the BG end nothing of solar energy pole plate negative pole, controller for solar, i.e. storage battery no-output power consumption; When the potential difference between TG and the P+ (solar energy polar plate voltage) is higher than set point B2(21.5V) time, output CQ output low level by voltage comparator A1, not conducting of the field effect transistor Q1 of on-off controller, Q2, Q3, Q4, Q5, Q6 conducting, expression accumulator anode and cathode and solar energy pole plate both positive and negative polarity are direct-connected, and the solar energy pole plate directly charges a battery; Charge to battery tension and be higher than set point B3(25V) time, by voltage comparator A2 output K output high level, the field effect transistor Q1 of on-off controller, Q2, Q3, Q4 conducting, not conducting of Q5, Q6, expression solar energy pole plate positive pole, controller for solar positive pole, battery positive voltage and voltage comparator A1, A2, the input P+ of on-off controller connects; Solar energy pole plate negative pole is connected with voltage comparator A1, on-off controller input TG; Controller for solar pole plate input cathode is connected with on-off controller output KTG; Battery terminal negative is connected with the input BG of voltage comparator A1, on-off controller; Controller for solar storage battery input cathode is connected with on-off controller output KBG.Be that storage battery discharges and recharges by controller for solar; When the potential difference between BG and the P+ (battery tension) is lower than set point B1(19V) time, through the Q9 conducting of voltage ratio than A2, the input of voltage comparator A1 is equated with the input BG of voltage comparator, voltage comparator comparison A1 output K is a high level, not conducting of the field effect transistor Q1 of on-off controller, Q2, Q3, Q4, Q5, Q6 conducting, table expression accumulator anode and cathode and solar energy pole plate both positive and negative polarity are direct-connected, and the solar energy pole plate directly charges a battery.In the present embodiment; battery tension should be not less than sets B1(19V); as be lower than B1; the discharge voltage that storage battery is described is on the low side; solar photovoltaic generation system will change sub-guard mode over to; voltage until storage battery is higher than set point B3(25V) time, solar photovoltaic generation system changes normal operating condition over to.
Claims (1)
1. solar energy system battery overdischarge protector, it is characterized in that, comprise voltage comparator A1, voltage comparator A2 and on-off controller, the input P+ of voltage comparator A1 is connected with solar energy pole plate positive pole, battery positive voltage, controller for solar pole plate input anode, storage battery input anode, load output head anode, input TG is connected with solar energy pole plate negative pole, and input BG is connected with battery terminal negative; The output CG of voltage comparator A1 is connected with on-off controller input CG, and when voltage comparator A1 output CG was high level, described protector was in off position; When voltage comparator A1 output CG is low level, triode Q9 conducting, the current potential of output CG equates with input BG current potential, field effect transistor Q5, the Q6 conducting in the on-off controller simultaneously; Voltage comparator A2 input P+ is connected with solar energy pole plate positive pole, battery positive voltage, controller for solar pole plate positive pole, and input CG is connected with voltage comparator A1 output CG; Output K is connected with the input K of on-off controller, when voltage comparator A2 output K is low level, and the field effect transistor Q5 in the on-off controller, Q6 conducting; When voltage comparator A2 output K is high level, the field effect transistor Q1 in the on-off controller, Q2, Q3, Q4 conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200993834U CN202014088U (en) | 2011-04-07 | 2011-04-07 | Overdischarge protector of solar power system storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200993834U CN202014088U (en) | 2011-04-07 | 2011-04-07 | Overdischarge protector of solar power system storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202014088U true CN202014088U (en) | 2011-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200993834U Expired - Fee Related CN202014088U (en) | 2011-04-07 | 2011-04-07 | Overdischarge protector of solar power system storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202014088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184131A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Alarm circuit |
| CN104518485A (en) * | 2013-09-26 | 2015-04-15 | 深圳市海洋王照明工程有限公司 | Battery over-discharge electric protection circuit |
| CN105226760A (en) * | 2015-10-28 | 2016-01-06 | 福建奥通迈胜电力科技有限公司 | A kind of low consumption low voltage breaking circuit for fault detector communication terminal |
-
2011
- 2011-04-07 CN CN2011200993834U patent/CN202014088U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184131A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Alarm circuit |
| CN104184131B (en) * | 2013-05-27 | 2017-06-23 | 深圳市海洋王照明工程有限公司 | A kind of warning circuit |
| CN104518485A (en) * | 2013-09-26 | 2015-04-15 | 深圳市海洋王照明工程有限公司 | Battery over-discharge electric protection circuit |
| CN105226760A (en) * | 2015-10-28 | 2016-01-06 | 福建奥通迈胜电力科技有限公司 | A kind of low consumption low voltage breaking circuit for fault detector communication terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20170407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |