CN113725932A - Emergency power generation equipment and discharging method thereof - Google Patents
Emergency power generation equipment and discharging method thereof Download PDFInfo
- Publication number
- CN113725932A CN113725932A CN202010451261.0A CN202010451261A CN113725932A CN 113725932 A CN113725932 A CN 113725932A CN 202010451261 A CN202010451261 A CN 202010451261A CN 113725932 A CN113725932 A CN 113725932A
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- CN
- China
- Prior art keywords
- power generation
- emergency power
- control unit
- imax
- electrically connected
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 44
- 238000007599 discharging Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004146 energy storage Methods 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to emergency power generation equipment which comprises a direct current output port, an energy storage unit, a control unit, a shunt and a relay, wherein the energy storage unit is electrically connected with the control unit. The shunt is electrically connected with the negative electrode of the energy storage unit and the direct current output port respectively, and meanwhile, the shunt is electrically connected with the control unit. The relay is respectively electrically connected with the anode of the energy storage unit and the direct current output port, and simultaneously, the relay is electrically connected with the control unit. The invention also relates to a discharging method of an emergency power generation device, comprising the following steps: s1, when the discharge current I is smaller than Imax, the discharge is normal; if I is larger than Imax, performing step S2; s2, carrying out current limiting Ilimit by the system for a time period T; s3, canceling current limiting, and if I is smaller than Imax, discharging the system normally; if I is still larger than Imax, repeating the steps S2 and S3; s4, if the cycle number N reaches a preset value N, and if I is smaller than Imax, the system discharges normally; and if I is still larger than Imax, the control unit starts overcurrent protection.
Description
Technical Field
The invention relates to the field of new energy, in particular to emergency power generation equipment and a discharging method thereof.
Background
The emergency power generation of the tower base station requires that seamless switching (the base station power supply only allows 10ms switching time) must be realized from the stock power supply to the emergency power generation. When the voltage of the battery of the base station for supplying power is low, the direct connection of the emergency power generation equipment can generate a large current in a short time due to voltage difference, and the current is close to 2 times of the normal working current, so that the overcurrent protection of the emergency power generation equipment is caused, and the power supply for the base station cannot be realized.
The existing solution is to add a separator to separate a battery pack of the base station standby power from an emergency power generation device, so as to ensure that the emergency power generation device is connected to a base station power supply network, and the method has high cost and relatively complex user operation;
the application provides an emergency power generation device and a discharging method thereof, the emergency power generation device can be applied to an iron tower base station, and the emergency power generation device does not need to be isolated from a battery pack of the iron tower base station.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme: an emergency power generation device comprises an energy storage unit and a control unit, wherein the energy storage unit is electrically connected with the control unit.
The emergency power generation equipment further comprises a direct current output port and a shunt wire harness, the direct current output port is used for outputting direct current, and the shunt wire harness is used for electrically connecting the emergency power generation equipment and a load. The direct current output port and the reposition of redundant personnel pencil electric connection, reposition of redundant personnel pencil keep away from direct current output port one end and are provided with three connecting terminal, including positive connecting terminal, negative connecting terminal and anderson connector. The applicability of the emergency power generation equipment can be improved by arranging the three connecting terminals, so that the connecting terminals of different loads are matched.
In one embodiment, the energy storage unit is a battery module, and the control unit is a BMS board.
The control unit can set an upper limit value of the discharge current, and when the discharge current of the emergency power generation equipment is smaller than the set value, the system discharges normally; and when the discharge current of the emergency power generation equipment is larger than the set value, the system carries out overcurrent protection and prohibits discharge.
The emergency power generation equipment further comprises a shunt and a relay, wherein the shunt is electrically connected with the negative electrode of the energy storage unit and the direct current output port respectively, the shunt is electrically connected with the control unit, the shunt is used for measuring the actual discharge current of the energy storage unit, and the shunt sends the detected actual discharge current value to the control unit. The relay is respectively electrically connected with the anode of the energy storage unit and the direct current output port, and meanwhile, the relay is electrically connected with the control unit, and the control unit can control the on-off of the relay.
The application also provides a discharging method of the emergency power generation equipment, which comprises the following steps:
s1, setting an allowable discharge current value Imax by a control unit of the emergency power generation equipment, and if the discharge current I of the emergency power generation equipment is smaller than the set value, normally discharging the system; if the discharge current I of the emergency power generation equipment is larger than the set value, performing step S2;
s2, carrying out current limiting Ilimit by the system for a time period T;
s3, canceling current limiting, and if the actual discharge current I is smaller than Imax, discharging the system normally; if the actual discharge current I is still larger than Imax, repeating the step S2 and the step S3;
s4, the control unit of the emergency power generation equipment sets a number N of times for allowing the step S2 and the step S3 to circulate, if the number N of times for circulating the step S2 and the step S3 reaches a preset value N, and if the actual discharge current I is smaller than Imax, the system discharges normally; and if the actual current I is still larger than Imax, the control unit starts overcurrent protection, namely the relay is controlled to be disconnected, and the emergency power generation equipment prohibits discharging.
When the discharging current I of the emergency generating equipment is larger than the allowable discharging current Imax, the BMS performs discharging current limiting to limit the discharging current to Ilimit, the current Ilimit is smaller than Imax, and the base station equipment can be charged with the constant-standby electric battery while power supply of the base station equipment is met (the voltage difference between the emergency generating equipment and the constant-standby electric battery of the base station is reduced until the voltages of the emergency generating equipment and the constant-standby electric battery of the base station are consistent); when the pressure difference between the emergency generating equipment and the base station permanent electricity battery is basically consistent, the emergency generating equipment relieves the discharge current limitation and normally generates electricity for the base station.
Compared with the existing equipment, the emergency power generation equipment adopting the discharging method has the advantages that the cost is not increased, an isolator can be omitted, the isolator can be directly connected to an iron tower base station, the cost is reduced, and the emergency power generation equipment is simpler and more convenient to use by an operator.
Drawings
The figures further illustrate the invention, but the examples in the figures do not constitute any limitation of the invention.
Fig. 1 is an internal circuit diagram of an emergency power generation apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an emergency power generation apparatus according to an embodiment of the present invention.
Fig. 3 is a flowchart of a discharging method according to an embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, an emergency power generation apparatus 1 according to an embodiment of the present invention includes an energy storage unit 11, a control unit 12, a shunt 13, and a relay 14, where the energy storage unit 11 and the control unit 12 are electrically connected. The energy storage unit 11 is a battery module. The control unit 12 is a BMS board and is specifically of the BLM-M01A-YD100 type. The splitter 13 is a FL-2 dc splitter. The specific model of the relay 14 is EVC135-5 BNG. The energy storage unit 11 is electrically connected with the control unit 12, the energy storage unit 11 supplies power to the control unit 12, and meanwhile, the control unit 12 is electrically connected with the energy storage unit 11 through a voltage sampling line and a temperature sampling line and used for monitoring the state parameters of the battery module in real time. The emergency generating equipment 1 further comprises a direct current output port 15 and a shunt harness 16, wherein the direct current output port 15 is used for outputting direct current, and the shunt harness 16 is used for electrically connecting the emergency generating equipment 1 and a load. The direct current output port 15 is electrically connected with the shunt harness 16, and one end of the shunt harness 16, which is far away from the direct current output port 15, is provided with three connecting terminals, including a positive connecting terminal 161, a negative connecting terminal 162 and an anderson connector 163. The shunt 13 is electrically connected to the negative electrode of the energy storage unit 11 and the dc output port 15, and the shunt 13 is electrically connected to the control unit 12. The relay 14 is electrically connected to the positive electrode of the energy storage unit 11 and the dc output port 15, and the relay 14 is electrically connected to the control unit 12.
As shown in fig. 3, the present embodiment further provides a discharging method, including the following steps:
s1, the control unit 12 of the emergency power generation device 1 sets an allowable discharge current value Imax and an allowable cycle number value N, and if the discharge current I of the emergency power generation device detected by the shunt 13 is smaller than the set value, the system discharges normally; if the discharge current I of the emergency power generation equipment is larger than the set value, performing step S2;
s2, carrying out current limiting by the system, wherein Ilimit is less than Imax and lasts for a time period T;
s3, canceling current limiting, and if the actual discharge current I is smaller than Imax, discharging the system normally; if the actual discharge current I is still larger than Imax, repeating the step S2 and the step S3;
s4, if the times N of the step S2 and the step S3 reach the preset value N, if the actual discharge current I is smaller than Imax, the system discharges normally; if the actual current I is still larger than Imax, the BMS starts overcurrent protection, namely the relay is controlled to be switched off, and the emergency power generation equipment prohibits discharging.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. An emergency power generation apparatus, characterized in that:
the energy storage device comprises a direct current output port, an energy storage unit, a control unit, a shunt and a relay, wherein the energy storage unit is electrically connected with the control unit;
the shunt is respectively electrically connected with the negative electrode of the energy storage unit and the direct current output port, and meanwhile, the shunt is electrically connected with the control unit;
the relay is respectively and electrically connected with the anode of the energy storage unit and the direct current output port, and meanwhile, the relay is electrically connected with the control unit.
2. An emergency power generation apparatus according to claim 1, wherein: the emergency power generation equipment further comprises a shunt wire harness, the direct current output port is electrically connected with the shunt wire harness, and three connecting terminals are arranged at one end, far away from the direct current output port, of the shunt wire harness and comprise a positive connecting terminal, a negative connecting terminal and an Anderson connector.
3. A method of discharging an emergency power plant according to claim 1 or 2, comprising the steps of:
s1, setting an allowable discharge current value Imax by a control unit of the emergency power generation equipment, and if the discharge current I of the emergency power generation equipment is smaller than the set value, normally discharging the system; if the discharge current I of the emergency power generation equipment is larger than the set value, performing step S2;
s2, carrying out current limiting by the system, wherein Ilimit is less than Imax and lasts for a time period T;
s3, canceling current limiting, and if the actual discharge current I is smaller than Imax, discharging the system normally; if the actual discharge current I is still larger than Imax, repeating the step S2 and the step S3;
s4, the control unit of the emergency power generation equipment sets a number N of times for allowing the step S2 and the step S3 to circulate, if the number N of times for circulating the step S2 and the step S3 reaches a preset value N, and if the actual discharge current I is smaller than Imax, the system discharges normally; and if the actual current I is still larger than Imax, the control unit starts overcurrent protection, namely controls the relay to be switched off, and the emergency power generation equipment prohibits discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451261.0A CN113725932A (en) | 2020-05-25 | 2020-05-25 | Emergency power generation equipment and discharging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451261.0A CN113725932A (en) | 2020-05-25 | 2020-05-25 | Emergency power generation equipment and discharging method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113725932A true CN113725932A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010451261.0A Pending CN113725932A (en) | 2020-05-25 | 2020-05-25 | Emergency power generation equipment and discharging method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113725932A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539196A (en) * | 2014-12-10 | 2015-04-22 | 深圳市雷赛智能控制股份有限公司 | Driver soft start protecting device and protecting method thereof |
| CN207409536U (en) * | 2017-08-22 | 2018-05-25 | 惠州市乐亿通科技有限公司 | portable emergency power supply |
| CN212258466U (en) * | 2020-05-25 | 2020-12-29 | 广东亿鼎新能源汽车有限公司 | Emergency power generation equipment |
-
2020
- 2020-05-25 CN CN202010451261.0A patent/CN113725932A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539196A (en) * | 2014-12-10 | 2015-04-22 | 深圳市雷赛智能控制股份有限公司 | Driver soft start protecting device and protecting method thereof |
| CN207409536U (en) * | 2017-08-22 | 2018-05-25 | 惠州市乐亿通科技有限公司 | portable emergency power supply |
| CN212258466U (en) * | 2020-05-25 | 2020-12-29 | 广东亿鼎新能源汽车有限公司 | Emergency power generation equipment |
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