CN216929650U - Timely backup control device of energy storage battery system - Google Patents
Timely backup control device of energy storage battery system Download PDFInfo
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- CN216929650U CN216929650U CN202220509487.6U CN202220509487U CN216929650U CN 216929650 U CN216929650 U CN 216929650U CN 202220509487 U CN202220509487 U CN 202220509487U CN 216929650 U CN216929650 U CN 216929650U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a timely backup control device of an energy storage battery system, which comprises at least one backup battery; the detection switching control device is connected with a battery management device of a battery pack and used for receiving at least one abnormal signal generated by the battery management device; a backup loop is connected to the detecting and switching control device. When the battery management device detects that any battery unit in the battery pack is abnormal, the abnormal battery unit is separated from the battery connection loop under the control of the detection switching control device, and the backup battery is connected to the battery connection loop through the backup loop to replace the abnormal battery unit. The utility model can detect and switch when any battery unit of the energy storage battery system is abnormal, and timely connects the backup battery to the connecting loop in the energy storage battery system to replace the abnormal battery unit.
Description
Technical Field
The present invention relates to an energy storage battery system, and more particularly, to a backup control device for an energy storage battery system.
Background
In emergency power systems, green energy systems, smart grids or household energy storage devices, a plurality of battery units must be used to form an energy storage battery pack for storing and supplying power. In an outdoor energy storage system, an energy storage battery pack is a necessary device.
In the design of a conventional energy storage battery device, an energy storage battery pack is formed by connecting a plurality of battery units through a series-parallel circuit, and an energy storage power system with the requirements of required output voltage, output current and the like is formed.
However, in practical applications, due to the limited service life of the battery, one or more of the battery cells are inevitably replaced or repaired, and one or more of the battery cells are inevitably abnormal, so that the stability of the entire energy storage system may be increased, and even the entire energy storage system may not normally supply power.
Therefore, how to ensure that each battery unit in the battery pack can work normally and timely detect and take corresponding measures when one or more battery units in the plurality of battery units are in abnormal conditions is an important issue to be overcome in the technology of the energy storage system.
However, in the conventional energy storage battery system, when an abnormal condition occurs, a technician is usually required to perform detection and judgment on each battery unit so as to take replacement or repair work. In this way, the power supply function of the entire energy storage system is interrupted.
SUMMERY OF THE UTILITY MODEL
Therefore, it is a primary objective of the present invention to provide a backup control device for an energy storage battery system in time to overcome the above-mentioned problems of the prior art.
In order to achieve the above object, the timely backup control device of the energy storage battery system of the present invention comprises at least one backup battery; the detection switching control device is connected with a battery management device of a battery pack and used for receiving at least one abnormal signal generated by the battery management device; a backup loop is connected to the detecting and switching control device. When the battery management device detects that any battery unit in the battery pack is abnormal, the abnormal battery unit is separated from the battery connection loop under the control of the detection switching control device, and the backup battery is connected to the battery connection loop through the backup loop to replace the abnormal battery unit.
In terms of effect, the detection and switching control of the utility model can detect and switch when any battery unit of the energy storage battery system is abnormal, and connect the backup battery to the connecting loop in the energy storage battery system in time to replace the abnormal battery unit.
The present invention will be further described with reference to the following examples and the accompanying drawings.
Drawings
Fig. 1 is a system diagram of a first embodiment of the present invention.
Fig. 2 is a schematic diagram of the first embodiment of the present invention when a cell abnormality occurs.
Fig. 3 is a system diagram of a second embodiment of the present invention.
Fig. 4 is a schematic diagram of the second embodiment of the present invention when an abnormality occurs in the internal resistance of the battery cell.
Reference numerals:
1. 1 a: battery pack
11: battery unit
11 a: abnormal battery cell
11 b: battery unit with abnormal internal resistance
2: battery connection loop
21. 21a, 21 b: path switching unit
3: battery management device
31: connecting wire
4: detection switching control device
41: cell internal resistance discrimination unit
5: backup circuit
51: control wire
6: backup battery
s 1: abnormal signal
s 2: abnormal signal of battery internal resistance
Detailed Description
FIG. 1 is a system diagram illustrating a preferred embodiment of the present invention. As shown, a battery pack 1 in an energy storage battery system can be used to supply electrical energy to a load or an electrical energy converter. The battery pack 1 includes a plurality of battery cells 11, and the battery cells 11 are connected by a battery connection circuit 2 to form the battery pack 1. The battery connection circuit 2 may connect the plurality of battery units 11 in series and parallel according to the number of battery units 11, the output voltage, the output current, and other requirements.
A battery management device 3 is connected to the battery cells 11 and/or the battery connection circuit 2 via connection lines 31. The battery management device 3 can manage the power supply state of the battery pack 1 and the charge/discharge state of the battery cells 11, and can generate at least one abnormal signal s1 when an abnormal event occurs in the battery cells 11. For example, the abnormality signal s1 may be one of the abnormality signals generated when an abnormal condition occurs in the temperature, voltage and current of each battery cell 11, or may include an abnormality signal when an abnormality occurs in the internal resistance of the battery of each battery cell 11.
A path switching unit 21 may be connected to an output terminal of each battery cell 11 and then connected to the battery connection circuit 2. The plurality of battery cells 11 can be connected to the battery connection loop 2 through the path switching unit 21 or the backup battery 6 can be connected to the battery connection loop 2 through the backup loop 5.
A detection switching control device 4 is connected to the battery management device 3 for receiving the abnormal signal s1 generated by the battery management device 3. The detection switching control device 4 is connected to the path switching unit 21 and the at least one backup battery 6 via the backup circuit 5. The detection switch control device 4 is further connected to the path switch unit 21 via a control line 51.
Fig. 2 is a schematic diagram of the first embodiment of the present invention when a cell abnormality occurs. When the battery management device 3 detects an abnormal event of any one of the battery cells 11 in the battery pack 1 (for example, the abnormal battery cell 11a shown in the drawing), a corresponding abnormal signal s1 is generated and transmitted to the detection switching control device 4, and the detection switching control device 4 generates a switching control signal to control the path switching unit 21a corresponding to the abnormal battery cell 11a via the control line 51. Thus, the abnormal battery cell 11a having the abnormal event can be disconnected from the battery connection circuit 2, and the backup battery 6 can be connected to the battery connection circuit 2 through the backup circuit 5, instead of the abnormal battery cell 11a, to maintain the normal power supply and system stability of the battery pack 1. In this case, the abnormal battery cell 11a in which the abnormal event occurs can be detected, repaired, or replaced.
Fig. 3 is a system diagram of a second embodiment of the present invention. Fig. 4 is a schematic diagram of the second embodiment of the present invention when an abnormality occurs in the internal resistance of the battery cell. The constituent elements of this embodiment are substantially the same as those of the first embodiment, and therefore the same elements are denoted by the same element numbers for correspondence. In the present embodiment, the energy storage battery system also includes a plurality of battery units 11 forming a battery pack 1a, and a battery connection circuit 2 connecting the plurality of battery units 11 to form the battery pack 1 a.
A battery management device 3 is connected to the battery cells 11 and/or the battery connection circuit 2 via connection lines 31. A detection switching control device 4 is also connected to the battery management device 3.
In this embodiment, the detection switching control device 4 includes a battery internal resistance determining unit 41 for determining the battery internal resistance of each battery cell 11 in the battery pack 1a, so as to generate the switching control signal. For example, the factory internal resistance value of the battery unit is 10m ohms, and the switching control signal is generated when the battery internal resistance determination unit 41 determines that the battery internal resistance value exceeds twice the factory internal resistance value.
Fig. 4 is a schematic diagram of the second embodiment of the present invention when an abnormality occurs in the internal resistance of the battery cell. When the battery management device 3 detects that the internal resistance of any one of the battery cells 11b in the battery pack 1a is abnormal, a battery internal resistance abnormal signal s2 is generated and transmitted to the detection switching control device 4, and is determined by the battery internal resistance determination unit 41 of the detection switching control device 4.
When the battery internal resistance determining unit 41 determines that the battery internal resistance exceeds the factory internal resistance value (the factory internal resistance value is 10m ohm) by more than one time, a switching control signal is generated to control the path switching unit 21b corresponding to the battery unit 11b with abnormal battery internal resistance through the control line 51. Thus, the battery unit 11b with abnormal internal resistance can be disconnected from the battery connection loop 2, and the backup battery 6 can be connected to the battery connection loop 2 through the backup loop 5 to replace the battery unit 11b with abnormal internal resistance, so as to maintain the normal power supply and system stability of the battery pack 1 a.
The above-described embodiments are intended to be illustrative, and not restrictive, of the scope of the utility model, and all such modifications and substitutions that do not depart from the spirit of the utility model are intended to be included within the scope of the appended claims.
Claims (8)
1. An in-time backup control device for an energy storage battery system, comprising:
the battery units are connected by a battery connecting loop to form a battery pack so as to supply electric energy;
a battery management device for managing the supply state of the electric energy and the charge-discharge state of the plurality of battery units and generating at least one abnormal signal when the plurality of battery units have abnormal events;
it is characterized in that the timely backup control device comprises:
at least one backup battery;
a detection switching control device connected to the battery management device for receiving the at least one abnormal signal generated by the battery management device;
a backup loop connected to the detection switching control device;
when the battery management device detects that any one of the plurality of battery units has the abnormal event, the battery management device generates a corresponding at least one abnormal signal and transmits the signal to the detection switching control device, the detection switching control device generates a switching control signal, the battery unit having the abnormal event is switched out of the battery connection loop, and the at least one backup battery is connected to the battery connection loop through the backup loop to replace the battery unit having the abnormal event.
2. The device as claimed in claim 1, wherein the output terminal of each of the plurality of battery units is connected to a path switching unit, and the path switching unit is used to connect the plurality of battery units to the battery connection loop or connect the at least one backup battery to the battery connection loop through the backup loop.
3. The back-up control device for energy storage battery system according to claim 1, wherein the abnormality signal is one of the abnormality signals generated when the temperature, voltage and current of each of the plurality of battery units is abnormal.
4. The device of claim 1, wherein the detection switching control device comprises an internal battery resistance determining unit for determining an internal battery resistance of each of the plurality of battery cells to generate the switching control signal.
5. The device as claimed in claim 1, wherein the switching control signal is generated when the internal resistance of the battery is determined by the internal resistance determining unit to exceed twice the factory internal resistance.
6. A back-up in time control device for an energy storage battery system, comprising:
the battery units are connected by a battery connecting loop to form a battery pack so as to supply electric energy;
a battery management device for managing the supply state of the electric energy and the charge and discharge states of the plurality of battery units;
it is characterized in that the timely backup control device comprises:
at least one backup battery;
the detection switching control device is connected with the battery management device and comprises a battery internal resistance judging unit for judging the battery internal resistance of each battery unit of the plurality of battery units;
a backup loop connected to the detection switching control device;
when the internal resistance judging unit of the detection switching control device judges that the internal resistance of any battery unit of the plurality of battery units is abnormal, a switching control signal is generated, the battery unit with the abnormal internal resistance of the battery is separated from the battery connecting loop, and the at least one backup battery is connected to the battery connecting loop through the backup loop so as to replace the battery unit with the abnormal internal resistance of the battery.
7. The device as claimed in claim 6, wherein each output terminal of the plurality of battery units is connected to a path switching unit, and the path switching unit connects the plurality of battery units to the battery connection loop or connects the at least one backup battery to the battery connection loop via the backup loop.
8. The device as claimed in claim 6, wherein the internal resistance determination unit generates the switching control signal when determining that the internal resistance of the battery exceeds twice the factory internal resistance value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW11120097 | 2022-01-25 | ||
| TW111200977 | 2022-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216929650U true CN216929650U (en) | 2022-07-08 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220509342.6U Active CN216963375U (en) | 2022-01-25 | 2022-03-09 | Energy storage battery system combined with fire safety control device |
| CN202220509487.6U Active CN216929650U (en) | 2022-01-25 | 2022-03-09 | Timely backup control device of energy storage battery system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220509342.6U Active CN216963375U (en) | 2022-01-25 | 2022-03-09 | Energy storage battery system combined with fire safety control device |
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|---|---|
| CN (2) | CN216963375U (en) |
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2022
- 2022-03-09 CN CN202220509342.6U patent/CN216963375U/en active Active
- 2022-03-09 CN CN202220509487.6U patent/CN216929650U/en active Active
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| CN216963375U (en) | 2022-07-15 |
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