CN112952995A - Dual-redundancy power supply system for BMS power supply - Google Patents
Dual-redundancy power supply system for BMS power supply Download PDFInfo
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- CN112952995A CN112952995A CN202110459526.6A CN202110459526A CN112952995A CN 112952995 A CN112952995 A CN 112952995A CN 202110459526 A CN202110459526 A CN 202110459526A CN 112952995 A CN112952995 A CN 112952995A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
A dual-redundancy power supply system for BMS power supply relates to the field of BMS power supply systems. The intelligent power supply comprises a UPS, an external power supply, a BMS, a miniature circuit breaker, an intermediate relay and a switch power supply. Through being connected BMS and two auxiliary relay, auxiliary relay is connected with the UPS power, is equipped with miniature circuit breaker between auxiliary relay and the UPS power, through forming redundant power supply system like this. The system has the advantages that: a relay control mode is adopted, complex logic control is not needed, and the cost is low; the circuit action response is fast; multiple power supply redundancy is realized, and continuous uninterrupted power supply of the BMS is ensured; the related faults of the energy storage power station can be memorized and stored, and the long-term safe and reliable operation of the energy storage system is facilitated.
Description
Technical Field
The invention relates to the field of BMS power supply systems, in particular to a dual-redundancy power supply system for BMS power supply.
Background
The battery management system realizes the normal operation management of the battery, and a reasonable and efficient operation control strategy and a multi-level redundancy early warning protection mechanism are the basis and the key of the safety of the energy storage battery system. At present, the container energy storage system supplies power for the BMS (battery management system) without interruption, and two methods are generally conventionally used: first, supply power through getting from battery module or battery cluster, the steady output of rethread switching power supply rectification guarantees the BMS power supply. And secondly, under the condition that the condition allows, external alternating current power supply is selected, and then the alternating current power supply is rectified and output through a switching power supply, so that the BMS power supply is ensured.
Above-mentioned traditional scheme, the voltage appears unusually or the interrupt will lead to BMS power supply interrupt, can not continuous operation to lead to the energy storage power station can not safe effectual battery management, there is the state that the battery is out of control. Meanwhile, after power failure, the BMS cannot memorize and store related faults occurring in the energy storage power station, and is not beneficial to long-term safe and reliable operation of the energy storage system.
Disclosure of Invention
In order to ensure that the BMS can supply power continuously on line when power is cut off, maximally store the whole system, reduce loss and simultaneously memorize and store related faults occurring in an energy storage power station, the invention adopts the following technical scheme:
a dual-redundancy power supply system for BMS power supply comprises a BMS battery management system, a miniature circuit breaker, a first intermediate relay, a second intermediate relay and a switch power supply;
the BMS battery management system is connected with a switching power supply, and the switching power supply is used for converting alternating current into direct current;
the first intermediate relay comprises normally open contacts K11, K12, K15 and K16, normally closed contacts K13, K14, K17 and K18 and a coil K1; the live wire output end of the switch power supply is respectively connected with a normally open contact K12 and a normally closed contact K13, the coil is respectively connected with a normally open contact K11 and a normally open contact K15, the normally open contact K15 is connected with a normally open contact K16, and the zero line of the switch power supply is respectively connected with a normally open contact K16 and a normally closed contact K17; the second intermediate relay comprises normally open contacts K21, K22, K25 and K26, normally closed contacts K23, K24, K27 and K28 and a coil K2; normally closed contact K14 is connected with normally open contact K22, normally closed contact K23 respectively, and the coil is connected with normally open contact K21, normally open contact K25 respectively, and normally open contact K25 is connected with normally open contact K26, and normally closed contact K18 is connected with normally open contact K26, normally closed contact K27 respectively. Two redundant power supply systems are formed through the setting of two intermediate relays, can guarantee that a plurality of power supply supplies are to BMS power supply for BMS supplies power incessantly.
Specifically, the power supply device further comprises a first power supply, a second power supply, a first UPS power UPS1, a second UPS power UPS2 and an external power supply; the first power supply is connected with the power input end of a first UPS power supply UPS1, the power output end of a first UPS power supply UPS1 is connected with a coil K1, the second power supply is connected with the power input end of a second UPS power supply UPS2, and the power output end of the second UPS power supply UPS2 is connected with a coil K2; the live wire and the zero wire of the external power supply are respectively connected with the normally closed contact K24 and the normally closed contact K28.
Specifically, a charging switch ZK1 is provided between the first power supply and the first UPS power supply UPS1, and an output switch ZK2 is provided between the power output terminal of the first UPS power supply UPS1 and the coil K1.
Specifically, a charging switch ZK3 is provided between the second power supply and the second UPS power supply UPS2, and an output switch ZK4 is provided between the power output terminal of the second UPS power supply UPS2 and the coil K2. The miniature circuit breaker is beneficial to protecting the safety of the circuit.
Specifically, the charging switch ZK1 and the output switch ZK2 are miniature circuit breakers, and the charging switch ZK3 and the output switch ZK4 are miniature circuit breakers. The miniature circuit breaker is beneficial to protecting the safety of the circuit.
In summary, the apparatus of the present invention has the following advantages:
(1) a relay control mode is adopted, complex logic control is not needed, and the cost is low;
(2) the relay is adopted, the normal action time of the relay is about 10ms, and the action response of the circuit is fast;
(3) multiple power supply redundancy is realized, and continuous uninterrupted power supply of the BMS is ensured;
(4) the related faults occurring in the energy storage power station can be memorized and stored, and the long-term safe and reliable operation of the energy storage system is facilitated;
(5) the battery management is safely and effectively carried out, the whole system is stored to the maximum extent, and the loss is reduced.
Drawings
Fig. 1 is a circuit diagram of a dual redundant power supply system for BMS power supplies;
Detailed Description
The invention is further illustrated with reference to fig. 1.
The utility model provides a dual-redundancy power supply system for BMS power supply, includes BMS battery management system, miniature circuit breaker, first auxiliary relay, second auxiliary relay, switching power supply, first power supply, second power supply, first UPS power UPS1, second UPS power UPS2, outer power supply.
The BMS battery management system is connected with a switching power supply, and the switching power supply is used for converting direct current into alternating current;
the first intermediate relay comprises normally open contacts K11, K12, K15 and K16, normally closed contacts K13, K14, K17 and K18 and a coil K1; the live wire output end of the switch power supply is respectively connected with a normally open contact K12 and a normally closed contact K13, contact ends A22 and A21 of a coil K1 are respectively connected with a normally open contact K11 and a normally open contact K15, the normally open contact K15 is connected with a normally open contact K16, and the zero line output end of the switch power supply is respectively connected with a normally open contact K16 and a normally closed contact K17;
the second intermediate relay comprises normally open contacts K21, K22, K25 and K26, normally closed contacts K23, K24, K27 and K28 and a coil K2; normally closed contact K14 is connected with normally open contact K22, normally closed contact K23 respectively, and contact jaw A22, A21 of coil K2 are connected with normally open contact K21, normally open contact K25 respectively, and normally open contact K25 is connected with normally open contact K26, and normally closed contact K18 is connected with normally open contact K26, normally closed contact K27 respectively.
The first power supply is connected with the power input end of the first UPS power supply UPS1, the power output end of the first UPS power supply UPS1 is connected with the coil K1, the second power supply is connected with the power input end of the second UPS power supply UPS2, and the power output end of the second UPS power supply UPS2 is connected with the coil K2; the contact ends of the live wire and the zero wire of the external power supply are respectively connected with the normally closed contact K24 and the normally closed contact K28. A charging switch ZK1 is arranged between the first power supply and the first UPS power supply UPS1, the zero line input end of the charging switch ZK1 is connected with the zero line end of the first power supply, and the live line input end of the charging switch ZK1 is connected with the live line end of the first power supply. An output switch ZK2 is arranged between the first UPS power supply UPS1 and the coil K1, the zero line input end of the output switch ZK2 is connected with the zero line end of the first UPS power supply UPS1, and the live line input end of the output switch ZK2 is connected with the live line end of the first UPS power supply UPS 1. A charging switch ZK3 is arranged between the second power supply and the second UPS power supply UPS2, the zero line input end of the charging switch ZK3 is connected with the zero line end of the second power supply, and the live line input end of the charging switch ZK3 is connected with the live line end of the second power supply. An output switch ZK4 is arranged between the second UPS power supply UPS2 and the coil K2, the zero line input end of the output switch ZK4 is connected with the zero line end of the second UPS power supply UPS2, and the live line input end of the output switch ZK4 is connected with the live line end of the second UPS power supply UPS 3. Wherein, the charging switches ZK1, ZK3, the output switches ZK2, ZK4 are all miniature circuit breakers.
When the dual redundant power supply system works, the primary first UPS power supply UPS1, the standby second UPS power supply UPS2 and the standby external power supply. The 3-way power supply ensures that the BMS is continuously and uninterruptedly powered.
(1) The main working mode is as follows:
the charging switch ZK1 and the output switch ZK2 of the first UPS power supply UPS1, the charging switch ZK3 and the output switch ZK4 of the hot standby of the second UPS power supply UPS2 are sequentially switched on, the intermediate relay coil K1 is electrified at the moment, the normally open contacts K11, K12, K15 and K16 are closed, and due to the working characteristics of the intermediate relay, the normally closed contacts K13, K14, K17 and K18 are disconnected, and the external power supply from the second UPS power supply UPS2 is cut off. At this time, the BMS finishes normal power supply by outputting direct current through the switching power supply.
(2) Standby second UPS power UPS2 mode of operation:
if the first UPS power supply UPS1 is in abnormal working mode, and therefore power loss is caused, the first intermediate relay coil K1 loses power, the normally open contacts K11, K12, K15 and K16 are opened, and the normally closed contacts K13, K14, K17 and K18 are closed. Because the second UPS power supply UPS2 is in a hot standby state, the intermediate relay coil K2 is continuously electrified, the normally open contacts K21, K22, K25 and K26 are closed, the normally closed contacts K23, K24, K27 and K28 are opened, and the external heat supply standby power supply is cut off. The power of the second UPS power supply UPS2 flows through contacts K21, K22, K25, K26, K13, K14, K17, and K18, and is output as direct current through the switching power supply, thereby continuously supplying power to the BMS.
(3) Standby external power supply working mode:
if the first UPS power supply UPS1 and the second UPS power supply UPS2 both have faults and are abnormal, so that power loss is caused, the first intermediate relay coil K1, the normally open contacts K11, K12, K15 and K16 are disconnected, and the normally closed contacts K13, K14, K17 and K18 are closed; the second intermediate relay coil K2 loses power, normally open contacts K21, K22, K25 and K26 are disconnected, normally closed contacts K23, K24, K27 and K28 are closed, an external power supply flows through contacts K23, K24, K27, K28, K13, K14, K17 and K18, and direct current is output through a switching power supply to continuously supply power to the BMS.
As can be seen from the above description, the device has the following advantages:
1. a relay control mode is adopted, complex logic control is not needed, and the cost is low;
2. an intermediate relay is adopted, the normal action time of the intermediate relay is about 10ms, and the action response of a circuit is fast;
3. multiple power supply redundancy is realized, and continuous uninterrupted power supply of the BMS is ensured;
4. the related faults occurring in the energy storage power station can be memorized and stored, and the long-term safe and reliable operation of the energy storage system is facilitated;
5. the battery management is safely and effectively carried out, the whole system is stored to the maximum extent, and the loss is reduced.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (6)
1. A dual-redundancy power supply system for BMS power supply is characterized by comprising a BMS battery management system, a miniature circuit breaker, a first intermediate relay, a second intermediate relay and a switching power supply;
the BMS battery management system is connected with the switching power supply, and the switching power supply is used for converting alternating current into direct current;
the first intermediate relay comprises normally open contacts K11, K12, K15 and K16, normally closed contacts K13, K14, K17 and K18 and a coil K1; the live wire output end of the switch power supply is respectively connected with a normally open contact K12 and a normally closed contact K13, the coil is respectively connected with a normally open contact K11 and a normally open contact K15, the normally open contact K15 is connected with a normally open contact K16, and the zero line of the switch power supply is respectively connected with a normally open contact K16 and a normally closed contact K17;
the second intermediate relay comprises normally open contacts K21, K22, K25 and K26, normally closed contacts K23, K24, K27 and K28 and a coil K2; normally closed contact K14 is connected with normally open contact K22, normally closed contact K23 respectively, the coil respectively with normally open contact K21, normally open contact K25 are connected, normally open contact K25 is connected with normally open contact K26, normally closed contact K18 respectively with normally open contact K26, normally closed contact K27 are connected.
2. The dual redundant power supply system for BMS power supplies according to claim 1, further comprising a first power supply, a second power supply, a first UPS power supply, a second UPS power supply, an external power supply; the first power supply is connected with the power input end of the first UPS, the output end of the first UPS is connected with the coil K1, the second power supply is connected with the input end of the second UPS, and the power output end of the second UPS is connected with the coil K2; and the live wire connecting end and the zero wire connecting end of the external power supply are respectively connected with the normally closed contact K24 and the normally closed contact K28.
3. The dual redundant power supply system of claim 2 wherein a charge switch ZK1 is provided between the first power supply and the first UPS power supply, and an output switch ZK2 is provided between the first UPS power supply output and the coil K1.
4. The dual redundant power supply system of claim 2 wherein a charge switch ZK3 is provided between the second power supply and the second UPS power supply, and an output switch ZK4 is provided between the second UPS power supply output and the coil K2.
5. The dual redundant power supply system for BMS power supply of claim 3, wherein said charge switch ZK1 and output switch ZK2 are micro breakers.
6. The dual redundant power supply system for BMS power supply of claim 4, wherein said charge switch ZK3 and output switch ZK4 are micro breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110459526.6A CN112952995A (en) | 2021-04-27 | 2021-04-27 | Dual-redundancy power supply system for BMS power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110459526.6A CN112952995A (en) | 2021-04-27 | 2021-04-27 | Dual-redundancy power supply system for BMS power supply |
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| CN112952995A true CN112952995A (en) | 2021-06-11 |
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| CN202110459526.6A Pending CN112952995A (en) | 2021-04-27 | 2021-04-27 | Dual-redundancy power supply system for BMS power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725995A (en) * | 2021-08-24 | 2021-11-30 | 南京南瑞继保电气有限公司 | Power distribution terminal double-backup power supply management system and management method thereof |
| CN114844199A (en) * | 2022-05-17 | 2022-08-02 | 珠海科创电力电子有限公司 | Uninterrupted BMS system for energy storage system |
-
2021
- 2021-04-27 CN CN202110459526.6A patent/CN112952995A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725995A (en) * | 2021-08-24 | 2021-11-30 | 南京南瑞继保电气有限公司 | Power distribution terminal double-backup power supply management system and management method thereof |
| CN113725995B (en) * | 2021-08-24 | 2024-01-02 | 南京南瑞继保电气有限公司 | Dual-backup power supply management system and management method for power distribution terminal |
| CN114844199A (en) * | 2022-05-17 | 2022-08-02 | 珠海科创电力电子有限公司 | Uninterrupted BMS system for energy storage system |
| CN114844199B (en) * | 2022-05-17 | 2024-04-16 | 珠海科创储能科技有限公司 | Uninterrupted BMS system for energy storage system |
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