CN215419633U - Storage battery and performance stability control device thereof - Google Patents
Storage battery and performance stability control device thereof Download PDFInfo
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- CN215419633U CN215419633U CN202120663463.1U CN202120663463U CN215419633U CN 215419633 U CN215419633 U CN 215419633U CN 202120663463 U CN202120663463 U CN 202120663463U CN 215419633 U CN215419633 U CN 215419633U
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Abstract
The utility model belongs to the technical field of storage batteries, and discloses a storage battery pack and a performance stability control device thereof, wherein the storage battery pack performance stability control device comprises: the device comprises a charging module, an energy storage module and a discharging module; the charging module is connected with the energy storage module, and the discharging module is connected with the energy storage module; the charging module is provided with a first connector for connecting to a storage battery pack direct current bus, and the discharging module is provided with a second connector for connecting to the storage battery pack direct current bus. The storage battery pack and the performance stability control device thereof provided by the utility model can solve the technical problems that when the storage battery pack is switched on under a large current, the internal resistance of the storage battery is increased, the output voltage is reduced, the breaker cannot be switched on reliably, and the service life of the storage battery is influenced.
Description
Technical Field
The utility model relates to the technical field of storage batteries, in particular to a storage battery pack and a performance stability control device thereof.
Background
In the current power utilization scene of a transformer substation and a power plant, a part of switching-on loops of a high-voltage circuit breaker are controlled by a contactor or a low switching-on resistor. The circuit breaker can generate larger closing current at the closing moment, so that the storage battery can generate larger discharging current at the moment. Because the internal resistance of the storage battery is related to the magnitude of discharge current, instantaneous heavy current discharges, a sulfuric acid solution in a polar plate gap is quickly diluted, more than 90% of sulfuric acid molecules outside a polar plate hole cannot be diffused into the polar plate gap, the solution resistance in the polar plate hole is increased, the terminal voltage is obviously reduced, even the output voltage of the storage battery is lower than the lowest closing voltage of a circuit breaker, the power transmission of an electric circuit and equipment is influenced, and the adverse situation of power supply is caused; on the other hand, the battery pack suffers from impact current for a long time, which reduces its service life.
SUMMERY OF THE UTILITY MODEL
The utility model provides a storage battery pack and a performance stability control device thereof, which solve the technical problems that when the storage battery pack is switched on under a large current, the internal resistance of a storage battery is increased, the output voltage is reduced, a breaker cannot be switched on reliably, and the service life of the storage battery is influenced in the prior art.
In order to solve the above technical problem, the present invention provides a storage battery performance stability control device, including: the device comprises a charging module, an energy storage module and a discharging module;
the charging module is connected with the energy storage module, and the discharging module is connected with the energy storage module;
the charging module is provided with a first connector for connecting to a storage battery pack direct current bus, and the discharging module is provided with a second connector for connecting to the storage battery pack direct current bus.
Further, the charging module includes: a first diode and a current limiting resistor;
the negative electrode of the first diode is connected with the positive electrode of the energy storage module through the current-limiting resistor, the positive electrode of the first diode is connected with the first joint, and the negative electrode of the energy storage module is connected with the negative joint.
Further, the energy storage module includes: an energy storage capacitor;
the anode of the energy storage capacitor is connected with the cathode of the first diode through the current limiting resistor;
the anode of the energy storage capacitor is connected with the second joint through the discharging module;
and the negative electrode of the energy storage capacitor is connected with the negative electrode joint.
Further, the discharge module includes: a second diode;
and the anode of the second diode is connected with the anode of the energy storage capacitor, and the cathode of the second diode is connected with the second joint.
Further, a first control switch is arranged between the anode of the first diode and the first joint.
Further, a second control switch is arranged between the cathode of the second diode and the second joint.
Further, the first control switch is a first double-pole double-throw switch;
the first double-pole double-throw switch is correspondingly connected between the anode of the first diode and the first joint and between the cathode of the energy storage capacitor and the cathode joint respectively.
Further, the second control switch is a second double-pole double-throw switch;
the second double-pole double-throw switch is correspondingly connected between the cathode of the second diode and the second joint and between the cathode of the energy storage capacitor and the cathode joint respectively.
A battery pack, comprising: the storage battery pack comprises a storage battery pack body and a storage battery pack performance stability control device;
the first joint and the second joint are respectively connected with a direct current positive output bus of the storage battery pack body, and the negative electrode of the energy storage module is connected with a direct current negative output bus of the storage battery pack body.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the storage battery pack and the performance stability control device thereof provided in the embodiment of the application, through storage battery pack under normal state charges for the energy storage module through the charging module, when storage battery pack meets big closing current, the energy storage module discharges through the discharging module, thereby when big closing current appears, the energy storage module and the storage battery pack jointly provide energy for a closing circuit, namely, closing current, the impact of big closing current on the storage battery pack is reduced, the output voltage of the storage battery pack is maintained, the reliable closing of a circuit breaker is ensured, and the service life of the storage battery pack is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a storage battery performance stability control device provided in an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a storage battery performance stability control device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a battery performance stability control apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of connection between a storage battery pack and a storage battery pack performance stability control device according to an embodiment of the present invention.
Detailed Description
The embodiment of the application provides a storage battery pack and a performance stability control device thereof, and solves the technical problems that when the storage battery pack is switched on under the condition of a large current, the internal resistance of a storage battery is increased, the output voltage is reduced, a breaker cannot be switched on reliably, and the service life of the storage battery is influenced in the prior art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1 and 2, a device for stabilizing and controlling the performance of a battery pack includes: a charging module 1, an energy storage module 2 and a discharging module 3; the charging module 1 is connected with the energy storage module 2, and the discharging module 3 is connected with the energy storage module 2; the charging module 1 is provided with a first connector for connecting to a direct current bus of the storage battery pack, and the discharging module 3 is provided with a second connector for connecting to the direct current bus of the storage battery pack.
Referring to fig. 2 and 4, the energy storage module 2 is normally charged by the storage battery pack through the charging module 1 to store electric energy. When a large switching-on current occurs, the energy storage module 2 and the storage battery pack provide energy for a switching-on loop together, namely the switching-on current, so that the impact of the large switching-on current on the storage battery pack is reduced, the output voltage of the storage battery pack is maintained, the reliable switching-on of a circuit breaker is ensured, and the service life of the storage battery pack is prolonged. The method can maintain the bus voltage stability of the direct current system, prolong the service life of the storage battery pack and reduce the failure rate and the operating cost.
Referring to fig. 3, in the present embodiment, the charging module 1 includes: a first diode D1 and a current limiting resistor R; the negative electrode of the first diode D1 is connected with the positive electrode of the energy storage module 2 through the current limiting resistor R, the positive electrode of the first diode D1 is connected with the first connector, and the negative electrode of the energy storage module 2 is connected with the negative connector.
In cooperation, the energy storage module 2 includes: an energy storage capacitor C; the anode of the energy storage capacitor C is connected with the cathode of the first diode D1 through the current limiting resistor R; the anode of the energy storage capacitor C is connected with the second joint through the discharging module 3; and the negative electrode of the energy storage capacitor C is connected with the negative electrode joint.
The discharge module 3 includes: a second diode D2; the anode of the second diode D2 is connected to the anode of the energy storage capacitor C, and the cathode of the second diode D2 is connected to the second terminal.
When the device is put into use, the anode of an output bus of the storage battery pack is connected with the anode of a first diode D1, the cathode of the output bus is connected with the cathode of an energy storage capacitor C, a charging loop is conducted under the action of forward voltage, namely the diode is conducted, the energy storage capacitor C starts to store electric energy, and after a certain time, the energy storage of the energy storage capacitor C is finished.
When the storage battery meets large impact current, the second energy storage diode D2 is conducted, the energy storage capacitor C discharges through the discharge loop, and provides energy together with the storage battery, so that the impact of large current on the storage battery is reduced, and the voltage stability of an output bus of the storage battery is maintained.
For convenience of operation, a first control switch ZK1 is disposed between the positive electrode of the first diode D1 and the first terminal. A second control switch ZK2 is arranged between the cathode of the second diode D2 and the second joint.
In this embodiment, the first control switch ZK1 is a first double-pole double-throw switch; the first double-pole double-throw switch is correspondingly connected between the anode of the first diode D1 and the first joint and between the cathode of the energy storage capacitor Cnegative and the cathode joint respectively.
The second control switch ZK2 is a second double-pole double-throw switch; the second double-pole double-throw switch is correspondingly connected between the negative pole of the second diode D2 and the second joint and between the negative pole of the energy storage capacitor Cnegative pole and the negative joint respectively.
The embodiment also provides a storage battery set provided with the performance stability control device.
A battery pack, comprising: the storage battery pack comprises a storage battery pack body and a storage battery pack performance stability control device.
The first joint and the second joint are respectively connected with a direct current positive output bus of the storage battery pack body, and the negative electrode of the energy storage module is connected with a direct current negative output bus of the storage battery pack body. The specific working process is described above, and is not described herein again.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the storage battery pack and the performance stability control device thereof provided in the embodiment of the application, through storage battery pack under normal state charges for the energy storage module through the charging module, when storage battery pack meets big closing current, the energy storage module discharges through the discharging module, thereby when big closing current appears, the energy storage module and the storage battery pack jointly provide energy for a closing circuit, namely, closing current, the impact of big closing current on the storage battery pack is reduced, the output voltage of the storage battery pack is maintained, the reliable closing of a circuit breaker is ensured, and the service life of the storage battery pack is prolonged.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A storage battery performance stability control device is characterized by comprising: the device comprises a charging module, an energy storage module and a discharging module;
the charging module is connected with the energy storage module, and the discharging module is connected with the energy storage module;
the charging module is provided with a first connector for connecting to a direct current bus of the storage battery pack, and the discharging module is provided with a second connector for connecting to the direct current bus of the storage battery pack;
wherein the charging module includes: a first diode and a current limiting resistor;
the negative electrode of the first diode is connected with the positive electrode of the energy storage module through the current-limiting resistor, the positive electrode of the first diode is connected with the first joint, and the negative electrode of the energy storage module is connected with the negative joint;
the energy storage module includes: an energy storage capacitor;
the anode of the energy storage capacitor is connected with the cathode of the first diode through the current limiting resistor;
the anode of the energy storage capacitor is connected with the second joint through the discharging module;
the negative electrode of the energy storage capacitor is connected with the negative electrode joint;
the discharge module includes: a second diode;
the anode of the second diode is connected with the anode of the energy storage capacitor, and the cathode of the second diode is connected with the second joint;
and a first control switch is arranged between the anode of the first diode and the first joint.
2. The battery pack performance stability control device of claim 1, wherein a second control switch is disposed between the cathode of the second diode and the second connector.
3. The battery pack performance stability control device of claim 2, wherein the first control switch is a first double pole double throw switch;
the first double-pole double-throw switch is correspondingly connected between the anode of the first diode and the first joint and between the cathode of the energy storage capacitor and the cathode joint respectively.
4. The battery pack performance stability control device of claim 3, wherein the second control switch is a second double pole double throw switch;
the second double-pole double-throw switch is correspondingly connected between the cathode of the second diode and the second joint and between the cathode of the energy storage capacitor and the cathode joint respectively.
5. A battery pack, comprising: the storage battery pack comprises a storage battery pack body and a storage battery pack performance stability control device according to any one of claims 1-4;
the first joint and the second joint are respectively connected with a direct current positive output bus of the storage battery pack body, and the negative electrode of the energy storage module is connected with a direct current negative output bus of the storage battery pack body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120663463.1U CN215419633U (en) | 2021-04-01 | 2021-04-01 | Storage battery and performance stability control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120663463.1U CN215419633U (en) | 2021-04-01 | 2021-04-01 | Storage battery and performance stability control device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN215419633U true CN215419633U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120663463.1U Active CN215419633U (en) | 2021-04-01 | 2021-04-01 | Storage battery and performance stability control device thereof |
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| CN (1) | CN215419633U (en) |
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2021
- 2021-04-01 CN CN202120663463.1U patent/CN215419633U/en active Active
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