CN205304288U - Storage battery of direct current cabinet system switching device - Google Patents
Storage battery of direct current cabinet system switching device Download PDFInfo
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- CN205304288U CN205304288U CN201521004644.4U CN201521004644U CN205304288U CN 205304288 U CN205304288 U CN 205304288U CN 201521004644 U CN201521004644 U CN 201521004644U CN 205304288 U CN205304288 U CN 205304288U
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- accumulator battery
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Abstract
The utility model relates to a storage battery of direct current cabinet system switching device, cut -offfing including exchanging that device, first direct current cut -off the device, the second direct current cut -offs the device and the third direct current cut -offs the device, exchanging and cut -off device and first direct current and cut -off the device and cut -off the device through the third direct current and connect the second direct current and cut -off the device, to exchange the AC input who cut -offs the device and connect the direct current cabinet system, first direct current cut -offs the device and connects storage battery, and storage battery cut -offs the DC output that the direct current cabinet system is connected to the device through the second direct current, it is closed when AC input's alternating voltage is less than first default that the device is cut -off in the interchange, and it is closed when storage battery's output voltage is less than the second default that first direct current cut -offs the device, corresponds the second direct current and cut -off the device disconnection, makes storage battery and DC output throw out of gear. Storage battery's switching control can be realized, the availability factor is improved.
Description
Technical field
This utility model relates to technical field of power systems, particularly relates to a kind of direct current cabinet system accumulator battery switching device.
Background technology
Direct current cabinet system is the sole source of control in high tension substation station, protection, monitoring and operating breaker etc., including rectification module and accumulator battery. At present, the powering mode in high tension substation is: power in normal situation in AC system, and rectification module output direct current is by device in straight-flow system supply station, and output direct current is to battery charging simultaneously; When AC system powers stopping, accumulator battery export direct current and be that in station, device is powered by straight-flow system, thus can ensure that the electricity consumption of the interior device in station in a short time, it is ensured that the normal operation of interior device of standing.
Traditional direct current cabinet system does not have the ability of notice operation maintenance personnel, i.e. when AC system powers stopping, operation maintenance personnel can not obtain message in time. Therefore, when AC system does not restore electricity for a long time, it is easy to cause the over-discharge of accumulator battery, shorten its service life and even damage, cause economic loss. Therefore, the service efficiency of accumulator battery is low.
Utility model content
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of direct current cabinet system accumulator battery switching device that can improve accumulator battery service efficiency.
A kind of direct current cabinet system accumulator battery switching device, including exchange breaking device, the first direct current on-off device, the second direct current on-off device and the 3rd direct current on-off device, described exchange breaking device and described first direct current on-off device connect described second direct current on-off device by described 3rd direct current on-off device, described exchange breaking device connects the ac input end of direct current cabinet system, described first direct current on-off device connects accumulator battery, and described accumulator battery connects the DC output end of direct current cabinet system by described second direct current on-off device;
Described exchange breaking device closes when the alternating voltage of described AC system is lower than the first preset value, described first direct current on-off device closes when the output voltage of described accumulator battery is lower than the second preset value, described 3rd direct current on-off device is in operating state at described exchange breaking device and described first direct current on-off device when all closing, described second direct current on-off device disconnects when described 3rd direct current on-off device is in operating state, the DC output end making described accumulator battery and described direct current cabinet system is not connected to, described 3rd direct current on-off device is in the normal state when described exchange breaking device disconnects or described first direct current on-off device disconnects, described second direct current on-off device closes when described 3rd direct current on-off device is in the normal state, described accumulator battery is made to connect the outfan of described direct current cabinet system.
Above-mentioned direct current cabinet accumulator battery switching device, exchange breaking device closes when the alternating voltage of AC system is lower than the first preset value, now powers abnormal conditions for AC system; First direct current on-off device closes when the output voltage of accumulator battery is lower than the second preset value, now powers abnormal conditions for accumulator battery. 3rd direct current on-off device is in operating state at exchange breaking device and the first direct current on-off device when all closing, now the second direct current on-off device disconnects, the DC output end of accumulator battery and direct current cabinet system is not connected to, accumulator battery is stopped power supply work, it is to avoid accumulator battery over-discharge and damage. 3rd direct current on-off device is in the normal state when exchanging breaking device disconnection or the disconnection of the first direct current on-off device; now; second direct current on-off device Guan Bi; corresponding AC system is powered normally or accumulator battery is powered normally; accumulator battery connects the outfan of direct current cabinet system; accumulator battery can put into power supply, in order to recovers the work of power system in time. Therefore, by exchanging the cooperation of breaking device, the first direct current on-off device, the second direct current on-off device and the 3rd direct current on-off device, it is possible to achieve the input of accumulator battery and cut out operation, improve the service efficiency of accumulator battery.
Accompanying drawing explanation
Fig. 1 is the structure chart of this utility model direct current cabinet system accumulator battery switching device in an embodiment;
Fig. 2 is the local annexation figure of this utility model direct current cabinet system accumulator battery switching device in an embodiment;
Fig. 3 is the partial circuit diagram of this use Novel DC screen system accumulator battery switching device in an embodiment.
Detailed description of the invention
With reference to Fig. 1, direct current cabinet system accumulator battery switching device in this utility model one embodiment, including exchange breaking device 110, first direct current on-off device 120, second direct current on-off device 130 and the 3rd direct current on-off device 160, exchange breaking device 110 and the first direct current on-off device 120 connect the second direct current on-off device 130 by the 3rd direct current on-off device 160, exchange breaking device 110 connects the ac input end 200 of direct current cabinet system, first direct current on-off device 120 connects accumulator battery 300, accumulator battery 300 connects the DC output end 400 of direct current cabinet system by the second direct current on-off device 130.
Exchange breaking device 110 closes when the alternating voltage of the ac input end 200 of direct current cabinet system is lower than the first preset value, first direct current on-off device 120 closes when the output voltage of accumulator battery 300 is lower than the second preset value, 3rd direct current on-off device is in operating state at exchange breaking device 110 and the first direct current on-off device 120 when all closing, second direct current on-off device 130 disconnects when the 3rd direct current on-off device 160 is in operating state, makes the DC output end 400 of accumulator battery 300 and direct current cabinet system be not connected to; 3rd direct current on-off device is in the normal state when exchange breaking device 110 disconnects or the first direct current on-off device 120 disconnects, and the second direct current on-off device 120 closes when the 3rd direct current on-off device 160 is in the normal state, and makes accumulator battery 300 connect straight-flow system 400. The state of exchange breaking device 110 and the first direct current on-off device 120 affects disconnection or the Guan Bi of the second direct current on-off device 130, thus accumulator battery 300 can connect or be not connected to the DC output end 400 of direct current cabinet system, realize the input of accumulator battery 300 and cut out operation, accumulator battery 300 is avoided to overuse and damage, improve accumulator battery 300 service life, can avoid causing because electric main is stopped power supply that in the station of high tension substation, device for a long time cannot normal operation simultaneously.
Wherein, the ac input end 200 of direct current cabinet system provides the input port of alternating current for the rectification module that AC system is direct current cabinet system, the DC output end 400 of direct current cabinet system refers to the output port of output dc-dc system, it can be the port of rectification module output dc-dc system, it can also be the port of accumulator battery output dc-dc system, in the present embodiment, the DC output end mouth of direct current cabinet system refers specifically to the DC output end mouth of accumulator battery.
Wherein, the first preset value can specifically be arranged by lowest AC voltage as required, and the second preset value specifically can be arranged according to the minimum output voltage of accumulator battery 300.
Wherein in an embodiment, exchange breaking device 110 is AC low-tension relay, and the first direct current on-off device 120 is D.C. undervoltage relay, and the second direct current on-off device 130 is D.C. contactor, and the 3rd direct current on-off device 160 is auxiliary reclay. Auxiliary reclay can improve the quantity and capacity that control contact switch in loop, it is possible to improves and cut-offs efficiency. Auto-action when AC low-tension relay can be implemented in alternating voltage lower than a certain value, auto-action when D.C. undervoltage relay can be implemented in DC voltage lower than a certain value, D.C. contactor can realize reaching auto-action during a certain condition, such that it is able to realize the automatic switching of accumulator battery 300.
Specifically, in the present embodiment, the D.C. contactor work rated current 63A-200A that D.C. contactor employing type current capacity strong stability performance is high.
Referring to figs. 2 and 3, exchange breaking device 110 can include power coil the 116, first sampling coil 111 and the first contact switch 117, first direct current on-off device 120 includes the second sampling coil 121 and the second contact switch 127, second direct current on-off device 130 includes the 3rd sampling coil 137 and the 3rd contact switch 133, and the 3rd direct current on-off device 160 includes the 4th sampling coil 161 and the 4th contact switch 163.
Power coil 116 one end connects power input, and the other end connects power output end, in the present embodiment, with reference to Fig. 2, and the negative pole of power input and positive pole that power output end is accumulator battery 300 and accumulator battery 300. First sampling coil 111 one end connects the first-phase voltage of the ac input end 200 of direct current cabinet system, the present embodiment is specially connection A phase voltage, the other end connects the second-phase voltage of the ac input end of direct current cabinet system, is specially connection C phase voltage in the present embodiment. Second sampling coil 121 one end connects the positive pole of accumulator battery 300, and the other end connects the negative pole of accumulator battery 300. 3rd contact switch 133 is provided with first input end, the second input, the first outfan and the second outfan, first input end and the second input connect the positive bus-bar HM+ and negative busbar M-that positive pole and the negative pole of accumulator battery 300, the first outfan and the second outfan connect the DC output end of direct current cabinet system respectively respectively.
Specifically, in the present embodiment, the two ends of the first sampling coil 111 connect first-phase voltage and the second-phase voltage of the ac input end of direct current cabinet system respectively through fuse, are specially the first sampling coil 111 and connect A phase voltage and the C phase voltage of AC system respectively through fuse FU1 and fuse FU2. The two ends of the second sampling coil 121 connect positive pole and the negative pole of accumulator battery respectively through fuse, and the two ends being specially the second sampling coil 121 in the present embodiment connect positive pole and the negative pole of accumulator battery 300 respectively through fuse FU3 and fuse FU4.First outfan of the 3rd contact switch 133 and the second outfan connect the positive bus-bar HM+ and negative busbar M-of the DC output end 400 of direct current cabinet system respectively through fuse FU+ and fuse FU-. Arranging of fuse can protect the first sampling coil the 111, second sampling coil 121 and the 3rd contact switch 133.
With reference to Fig. 3, first contact switch the 117, second contact switch 127 and the 4th sampling coil 161 are sequentially connected in series, and the other end of the first contact switch 117 connects power input, and the other end of the 4th sampling coil 161 connects power output end. 4th contact switch 163 and the 3rd sampling coil 137 are connected, and the other end of the 4th contact switch 163 connects power input, and the other end of the 3rd sampling coil 137 connects power output end. In the present embodiment, power input is the positive pole of accumulator battery 300, and power output end is the negative pole of accumulator battery 300. Being appreciated that in other examples, the series sequence of first contact switch the 117, second contact switch 127 and the 4th sampling coil 161 can be other, and the series sequence of the 4th contact switch 163 and the 3rd sampling coil 137 can be other.
First sampling coil 111 power coil 116 be energized and the alternating voltage of ac input end 200 of direct current cabinet system lower than the first preset value time control the first contact switch 117 and close, now corresponding AC system is powered abnormal conditions; First sampling coil 111 power coil 116 be energized and the alternating voltage of ac input end 200 of direct current cabinet system more than or equal to the first preset value time control the first contact switch 117 and disconnect, now corresponding AC system is powered normal condition. Second sampling coil 121 controls the second contact switch 127 and closes when the output voltage of accumulator battery 300 is lower than the second preset value, and now corresponding accumulator battery 300 is powered abnormal conditions; Second sampling coil 121 controls the second contact switch 127 and disconnects when the output voltage of accumulator battery 300 is more than or equal to the second preset value, and now corresponding accumulator battery 300 is powered normal condition.
In the present embodiment, the 3rd contact switch 133 can be normal open switch, and the 4th contact switch 163 is normally closed switch. 4th sampling coil 161 is energized when the first contact switch 117 and the second contact switch 127 all close, 4th contact switch 163 is in operating state, now AC system and accumulator battery 300 are powered all abnormal, the loop conducting that first contact switch the 117, second contact switch the 127, the 4th sampling coil 161 and accumulator battery 300 are constituted. The power-off when the 4th contact switch 163 is in operating state of 3rd sampling coil 137, the 3rd contact switch 133 disconnects, and the DC output end 400 of accumulator battery 300 and direct current cabinet system is not connected to. Therefore, it can make accumulator battery 300 stop power supply, it is to avoid accumulator battery 300 over-discharge and damage.
4th sampling coil 161 is dead electricity when the first contact switch 117 disconnects or the second contact switch 127 disconnects; 4th contact switch 163 is in the normal state; now meet AC system 200 power normal or meet accumulator battery 300 loop that normal situation, first contact switch the 117, second contact switch the 127, the 4th sampling coil 161 and accumulator battery 300 constitute that powers and disconnect. 3rd sampling coil 137 is energized when the 4th contact switch 163 is in the normal state, and the 3rd contact switch 133 closes, and makes accumulator battery 300 be connected with the DC output end 400 of direct current cabinet system.Therefore, when AC system 200 is powered abnormal, but when accumulator battery 300 is powered normal, accumulator battery 300 puts into powered operation, it is to avoid because of AC fault causes device power-off immediately in the station of high tension substation and cannot normal operation. When AC system 200 fault recovery, alternating voltage are more than or equal to the first preset value, accumulator battery 300 also can put into powered operation.
With reference to Fig. 3, direct current cabinet system accumulator battery switching device can also include the first indicating device 170, and exchange breaking device 110 also includes the first extra switch 119, and the first direct current on-off device 120 also includes the second extra switch 129. First extra switch the 119, second extra switch 129 and the first indicating device 170 are sequentially connected in series, and first extra switch 119 the other end connect power input, the other end of the first indicating device 170 connects power output end, in the present embodiment, power input is the positive pole of accumulator battery 300, and power output end is the negative pole of accumulator battery 300. Being appreciated that in other examples, the series sequence of first extra switch the 119, second extra switch 129 and the first indicating device 170 can change.
First sampling coil 111 power coil 116 be energized and the alternating voltage of ac input end 200 of direct current cabinet system lower than the first preset value time control the first extra switch 119 and disconnect, now, corresponding AC system is powered abnormal situation; First sampling coil 111 power coil 116 be energized and the alternating voltage of ac input end 200 of direct current cabinet system more than or equal to the first preset value time control the first extra switch 119 and close, now corresponding AC system is powered normal situation. Second sampling coil 121 controls the second extra switch 129 and disconnects when the output voltage of accumulator battery 300 is lower than the second preset value, and now corresponding accumulator battery 300 is powered abnormal situation; Second sampling coil 121 controls the second extra switch 129 and closes when the output voltage of accumulator battery 300 is more than or equal to the second preset value, and now corresponding accumulator battery 300 is powered normal situation.
The power-off when the first extra switch 119 or the second extra switch 129 disconnect of first indicating device 170, now power abnormal or accumulator battery 300 of corresponding AC system is powered abnormal situation. First indicating device 170 is energized when the first extra switch 119 and the second extra switch 129 all close. Now corresponding AC system and accumulator battery 300 are powered all normal situation. Operation maintenance personnel can by judging that the power on/off of the first indicating device 170 determines whether power supply trouble.
First indicating device 170 may refer to show any one in electric light and display screen. In the present embodiment, with reference to Fig. 3, the first indicating device 170 is electric light. When AC system and accumulator battery 300 are all powered normal, electric light energising is bright, powers abnormal or when accumulator battery 300 is powered abnormal, electric light power-off is gone out, and operation maintenance personnel can determine whether power supply trouble by the light on and off of electric light in AC system. Being appreciated that in other examples, the first indicating device 170 can also be other electronic devices.
With reference to Fig. 3, direct current cabinet system accumulator battery switching device can also include the second indicating device 180, second direct current on-off device 130 also includes the 3rd extra switch 139, second indicating device 180 is connected with the 3rd extra switch 139, and the 3rd extra switch 139 the other end connect power input, the other end of the second indicating device 180 connects power output end, and in the present embodiment, power input is the positive pole of accumulator battery 300, and power output end is the negative pole of accumulator battery 300.Being appreciated that in other examples, the series sequence of the 3rd extra switch 139 and the second indicating device 180 can change.
3rd extra switch 139 closes when the 3rd sampling coil 137 is energized, and makes the second indicating device 180 be energized.
Accordingly, in the present embodiment, the 3rd extra switch 139 is normal open switch, and operating state is Guan Bi, and normality is for disconnecting. Second indicating device 180 is energized when the 3rd extra switch 139 closes, and represents that accumulator battery 300 is devoted oneself to work. Second indicating device 180 power-off when the 3rd extra switch 139 disconnects, represents that accumulator battery 300 is stopped power supply work. Therefore, operation maintenance personnel can by judging whether power on/off judges whether accumulator battery 300 puts into powered operation to the second indicating device 180.
Second indicating device 180 may refer to show any one in electric light and display screen. In the present embodiment, with reference to Fig. 3, the second indicating device 180 is electric light. Being appreciated that in other examples, the second indicating device 180 can also be other electronic devices.
Above-mentioned direct current cabinet accumulator battery switching device, exchange breaking device 110 close when the alternating voltage of AC system 200 is lower than the first preset value, is now that AC system 200 is powered abnormal conditions; First direct current on-off device 120 closes when the output voltage of accumulator battery 300 is lower than the second preset value, now powers abnormal conditions for accumulator battery 300. 3rd direct current on-off device 160 is in operating state at exchange breaking device 110 and the first direct current on-off device 120 when all closing, now the second direct current on-off device 130 disconnects, accumulator battery 300 and straight-flow system 400 are not connected to, accumulator battery 300 is stopped power supply work, it is to avoid accumulator battery 300 over-discharge and damage. 3rd direct current on-off device 160 is in the normal state when exchange breaking device 110 disconnects or the first direct current on-off device 120 disconnects; now; second direct current on-off device 130 closes; corresponding AC system 200 is powered normally or accumulator battery 300 is powered normally; accumulator battery 300 connects the DC output end 400 of direct current cabinet system; accumulator battery 300 can put into power supply, in order to recovers the work of power system in time. Therefore, by exchanging the cooperation of breaking device, the first direct current on-off device, the second direct current on-off device and the 3rd direct current on-off device 160, it is possible to achieve the input of accumulator battery 300 and cut out operation, improve the service efficiency of accumulator battery 300.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope. It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model. Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (7)
1. a direct current cabinet system accumulator battery switching device, it is characterized in that, including exchange breaking device, the first direct current on-off device, the second direct current on-off device and the 3rd direct current on-off device, described exchange breaking device and described first direct current on-off device connect described second direct current on-off device by described 3rd direct current on-off device, described exchange breaking device connects the ac input end of direct current cabinet system, described first direct current on-off device connects accumulator battery, and described accumulator battery connects the DC output end of direct current cabinet system by described second direct current on-off device;
Described exchange breaking device closes when the alternating voltage of the ac input end of described direct current cabinet system is lower than the first preset value, described first direct current on-off device closes when the output voltage of described accumulator battery is lower than the second preset value, described 3rd direct current on-off device is in operating state at described exchange breaking device and described first direct current on-off device when all closing, described second direct current on-off device disconnects when described 3rd direct current on-off device is in operating state, the DC output end making described accumulator battery and described direct current cabinet system is not connected to, described 3rd direct current on-off device is in the normal state when described exchange breaking device disconnects or described first direct current on-off device disconnects, described second direct current on-off device closes when described 3rd direct current on-off device is in the normal state, described accumulator battery is made to connect the outfan of described direct current cabinet system.
2. direct current cabinet system accumulator battery switching device according to claim 1, it is characterized in that, described exchange breaking device is AC low-tension relay, described first direct current on-off device is D.C. undervoltage relay, described second direct current on-off device is D.C. contactor, and described 3rd direct current on-off device is auxiliary reclay.
3. direct current cabinet system accumulator battery switching device according to claim 1, it is characterized in that, described exchange breaking device includes power coil, the first sampling coil and the first contact switch, described first direct current on-off device includes the second sampling coil and the second contact switch, described second direct current on-off device includes the 3rd sampling coil and the 3rd contact switch, and described 3rd breaking device includes the 4th sampling coil and the 4th contact switch;
Described power coil one end connects power input, the other end connects power output end, described first sampling coil one end connects the first-phase voltage of the ac input end of described direct current cabinet system, the other end connects the second-phase voltage of the ac input end of described direct current cabinet system, described second sampling coil one end connects the positive pole of described accumulator battery, the other end connects the negative pole of described accumulator battery, described first contact switch, described second contact switch and described 4th sampling coil are sequentially connected in series, and the other end of described first contact switch connects power input, the other end of described 4th sampling coil connects power output end, described 4th contact switch and described 3rd sampling coil series connection, and the other end of described 4th contact switch connects power input, the other end of described 3rd sampling coil connects power output end, described 3rd contact switch is provided with first input end, second input, first outfan and the second outfan, described first input end and described second input connect positive pole and the negative pole of described accumulator battery respectively, described first outfan and described second outfan connect positive bus-bar and the negative busbar of the DC output end of described direct current cabinet system respectively,
Described first sampling coil controls described first contact switch Guan Bi when the alternating voltage of the energising of described power coil and the ac input end of described direct current cabinet system is lower than described first preset value, control described first contact switch when the alternating voltage of the energising of described power coil and the ac input end of described direct current cabinet system is more than or equal to described first preset value to disconnect, described second sampling coil controls described second contact switch Guan Bi when the output voltage of described accumulator battery is lower than described second preset value, control described second contact switch to disconnect when the output voltage of described accumulator battery is more than or equal to described second preset value, described 4th sampling coil is energized when described first contact switch and described second contact switch all close, described 4th contact switch is in operating state, the power-off when described 4th contact switch is in operating state of described 3rd sampling coil, described 3rd contact switch disconnects, the DC output end making described accumulator battery and described direct current cabinet system is not connected to, described 4th sampling coil is dead electricity when described first contact switch disconnects or described second contact switch disconnects, described 4th contact switch is in the normal state, described 3rd sampling coil is energized when described 4th contact switch is in the normal state, described 3rd contact switch Guan Bi, described accumulator battery is made to connect the DC output end of described direct current cabinet system.
4. direct current cabinet system accumulator battery switching device according to claim 3, it is characterised in that also including the first indicating device, exchange breaking device also includes the first extra switch, and the first direct current on-off device also includes the second extra switch;First extra switch, the second extra switch and the first indicating device are sequentially connected in series, and the other end of the first extra switch connects power input, and the other end of the first indicating device connects power output end;
First sampling coil controls described first extra switch when the alternating voltage of the energising of described power coil and the ac input end of described direct current cabinet system is lower than described first preset value and disconnects, described first extra switch Guan Bi is controlled when the alternating voltage of the energising of described power coil and the ac input end of described direct current cabinet system is more than or equal to described first preset value, described second sampling coil controls described second extra switch and disconnects when the output voltage of described accumulator battery is lower than described second preset value, described second extra switch Guan Bi is controlled when the output voltage of described accumulator battery is more than or equal to described second preset value, the power-off when described first extra switch or described second contact switch disconnect of described first indicating device, it is energized when described first extra switch and described second extra switch all close.
5. direct current cabinet system accumulator battery switching device according to claim 3, it is characterized in that, including the second indicating device, second direct current on-off device also includes the 3rd extra switch, second indicating device and the series connection of the 3rd extra switch, and the 3rd the other end of extra switch connect power input, the other end of the second indicating device connects power output end;
Described 3rd extra switch is Guan Bi when the 3rd sampling coil energising, makes described second indicating device energising.
6. direct current cabinet system accumulator battery switching device according to claim 3, it is characterised in that the two ends of described first sampling coil connect first-phase voltage and the second-phase voltage of the ac input end of described direct current cabinet system respectively through fuse.
7. direct current cabinet system accumulator battery switching device according to claim 3, it is characterised in that the two ends of described second sampling coil connect positive pole and the negative pole of described accumulator battery respectively through fuse.
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| CN201521004644.4U CN205304288U (en) | 2015-12-04 | 2015-12-04 | Storage battery of direct current cabinet system switching device |
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| CN201521004644.4U CN205304288U (en) | 2015-12-04 | 2015-12-04 | Storage battery of direct current cabinet system switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233487A (en) * | 2019-04-30 | 2019-09-13 | 浙江芯能光伏科技股份有限公司 | Photovoltaic power station direct current cabinet battery discharge control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233487A (en) * | 2019-04-30 | 2019-09-13 | 浙江芯能光伏科技股份有限公司 | Photovoltaic power station direct current cabinet battery discharge control device |
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